The document discusses the six stroke engine, a new engine design that combines aspects of two-stroke and four-stroke engines. It has two cycles: an external combustion cycle and an internal combustion cycle, each with four events for a total of eight events. This results in two power strokes per cycle, improving efficiency. The six stroke engine is estimated to reduce fuel consumption by 40% and dramatically cut emissions. It also allows the use of multiple fuel types. In conclusion, the six stroke engine could have a major environmental and economic impact if adopted by automakers.
This document summarizes a seminar presentation on a six-stroke engine. It describes how a six-stroke engine works, providing six piston movements per cycle through the use of a second piston or by capturing waste heat for an additional power stroke. The document outlines the history of six-stroke engine development and describes several notable six-stroke engine designs, including those that use steam or air from waste heat for a second power stroke and those that use an opposed secondary piston. It also discusses modifications made to convert a four-stroke engine to a six-stroke design.
The document describes a six-stroke engine, which has two additional strokes compared to a four-stroke engine. The additional strokes allow for water injection after the exhaust stroke, which vaporizes and drives the piston for another power stroke. This provides increased efficiency of 40% over a four-stroke engine due to capturing wasted heat. The document outlines the working principle, modifications needed to the engine like materials and cam shaft design, advantages like reduced emissions and fuel consumption, and limitations such as starting problems.
This document describes the working principles and design of a six-stroke engine that uses water injection to improve efficiency. The six-stroke engine adds two additional strokes to the conventional four-stroke cycle to capture heat from the combustion process. In the secondary power stroke, water is injected into the superheated cylinder where it vaporizes, expanding and producing additional power. Thermodynamic analysis shows the six-stroke engine has higher thermal efficiency and lower fuel consumption compared to a four-stroke. However, modifications are needed to the engine components, camshaft, and valves to accommodate the additional strokes. While more efficient, the six-stroke engine also faces drawbacks such as difficulty starting when cold and requiring a source of neutral water.
The six-stroke engine is an internal combustion engine that builds upon the four-stroke engine design to increase efficiency. It has two approaches - the first uses the same piston for two additional strokes, while the second uses a second opposed piston moving at half the rate of the main piston. The six-stroke engine injects water into the combustion chamber on the power stroke, turning it instantly into steam for an additional power stroke. This provides increased efficiency over traditional engines by extracting work from heat otherwise lost and reducing emissions and fuel consumption by up to 40%. However, challenges include potential piston damage from thermal expansion and ensuring an adequate water supply.
This document discusses six-stroke engines. It describes two approaches for six-stroke engine design: using two additional strokes by the main piston or using a second opposed piston. It then discusses types of six-stroke engines like the Bajulaz and dual fuel designs. Specifications, performance comparisons between four-stroke, six-stroke diesel, and dual fuel six-stroke engines are presented. Benefits of six-stroke engines include reduced fuel consumption and emissions. Applications include automobiles, generators, and marine engines.
The document describes Velozeta's six-stroke engine, which was developed by modifying a four-stroke Honda engine. The first four strokes are identical to a conventional four-stroke engine. During the fifth stroke, air is inducted into the cylinder through a secondary line to improve scavenging. In the sixth stroke, the fresh air and remaining gases are expelled through the exhaust. Modifications included changing the camshaft and crankshaft sprockets to achieve six strokes, adding reed valves, and a secondary air induction system. The six strokes provide better cooling and scavenging than a conventional four-stroke engine.
Bhagawan Upreti presented on the six stroke engine. The six stroke engine adds two additional strokes to the traditional four stroke engine cycle to improve efficiency and reduce emissions. It captures waste heat from the four stroke cycle to power an additional exhaust and power stroke. This increases efficiency by 40% over a four stroke engine. Modifications are made to the crankshaft, camshaft, valves and timing to accommodate the extra strokes. While advantages include reduced fuel consumption and emissions, challenges include withstanding thermal stresses and needing separate water tanks for injection. Further development is ongoing to address issues and commercialize six stroke engine technology.
Effect of direct water injection in perfomance ofsreeramka
This document describes a study on the effects of direct water injection in a six stroke engine. The six stroke engine works on the principle of a four stroke engine but with two additional strokes. Water is injected into the superheated cylinder after the exhaust stroke, where it vaporizes and provides an additional power stroke. The study found that water injection increased brake power and thermal efficiency while decreasing specific fuel consumption and emissions. Maximum performance benefits were seen at engine speeds between 2750-3250 rpm.
This document summarizes a seminar presentation on a six-stroke engine. It describes how a six-stroke engine works, providing six piston movements per cycle through the use of a second piston or by capturing waste heat for an additional power stroke. The document outlines the history of six-stroke engine development and describes several notable six-stroke engine designs, including those that use steam or air from waste heat for a second power stroke and those that use an opposed secondary piston. It also discusses modifications made to convert a four-stroke engine to a six-stroke design.
The document describes a six-stroke engine, which has two additional strokes compared to a four-stroke engine. The additional strokes allow for water injection after the exhaust stroke, which vaporizes and drives the piston for another power stroke. This provides increased efficiency of 40% over a four-stroke engine due to capturing wasted heat. The document outlines the working principle, modifications needed to the engine like materials and cam shaft design, advantages like reduced emissions and fuel consumption, and limitations such as starting problems.
This document describes the working principles and design of a six-stroke engine that uses water injection to improve efficiency. The six-stroke engine adds two additional strokes to the conventional four-stroke cycle to capture heat from the combustion process. In the secondary power stroke, water is injected into the superheated cylinder where it vaporizes, expanding and producing additional power. Thermodynamic analysis shows the six-stroke engine has higher thermal efficiency and lower fuel consumption compared to a four-stroke. However, modifications are needed to the engine components, camshaft, and valves to accommodate the additional strokes. While more efficient, the six-stroke engine also faces drawbacks such as difficulty starting when cold and requiring a source of neutral water.
The six-stroke engine is an internal combustion engine that builds upon the four-stroke engine design to increase efficiency. It has two approaches - the first uses the same piston for two additional strokes, while the second uses a second opposed piston moving at half the rate of the main piston. The six-stroke engine injects water into the combustion chamber on the power stroke, turning it instantly into steam for an additional power stroke. This provides increased efficiency over traditional engines by extracting work from heat otherwise lost and reducing emissions and fuel consumption by up to 40%. However, challenges include potential piston damage from thermal expansion and ensuring an adequate water supply.
This document discusses six-stroke engines. It describes two approaches for six-stroke engine design: using two additional strokes by the main piston or using a second opposed piston. It then discusses types of six-stroke engines like the Bajulaz and dual fuel designs. Specifications, performance comparisons between four-stroke, six-stroke diesel, and dual fuel six-stroke engines are presented. Benefits of six-stroke engines include reduced fuel consumption and emissions. Applications include automobiles, generators, and marine engines.
The document describes Velozeta's six-stroke engine, which was developed by modifying a four-stroke Honda engine. The first four strokes are identical to a conventional four-stroke engine. During the fifth stroke, air is inducted into the cylinder through a secondary line to improve scavenging. In the sixth stroke, the fresh air and remaining gases are expelled through the exhaust. Modifications included changing the camshaft and crankshaft sprockets to achieve six strokes, adding reed valves, and a secondary air induction system. The six strokes provide better cooling and scavenging than a conventional four-stroke engine.
Bhagawan Upreti presented on the six stroke engine. The six stroke engine adds two additional strokes to the traditional four stroke engine cycle to improve efficiency and reduce emissions. It captures waste heat from the four stroke cycle to power an additional exhaust and power stroke. This increases efficiency by 40% over a four stroke engine. Modifications are made to the crankshaft, camshaft, valves and timing to accommodate the extra strokes. While advantages include reduced fuel consumption and emissions, challenges include withstanding thermal stresses and needing separate water tanks for injection. Further development is ongoing to address issues and commercialize six stroke engine technology.
Effect of direct water injection in perfomance ofsreeramka
This document describes a study on the effects of direct water injection in a six stroke engine. The six stroke engine works on the principle of a four stroke engine but with two additional strokes. Water is injected into the superheated cylinder after the exhaust stroke, where it vaporizes and provides an additional power stroke. The study found that water injection increased brake power and thermal efficiency while decreasing specific fuel consumption and emissions. Maximum performance benefits were seen at engine speeds between 2750-3250 rpm.
The document describes a six-stroke engine invented by Malcolm Beare that combines aspects of two-stroke and four-stroke engines. It retains the four-stroke piston below the cylinder head while adding a second piston in the cylinder head that operates like the piston in a two-stroke. This hybrid design increases power and torque over a four-stroke while reducing weight and complexity compared to conventional four-stroke engines. Key advantages include a 35% increase in torque and efficiency, lower reciprocating mass, and fewer overall parts.
A six stroke engine captures waste heat from the four stroke cycle to power an additional power and exhaust stroke. Designs use steam or air for the extra stroke, improving efficiency by 40% over four stroke engines. There are two types - single piston designs that add a steam/air stroke, and opposed piston designs that replace valves with a second piston. The additional stroke cools the engine, reducing weight and complexity versus four stroke designs by eliminating the cooling system. Six stroke engines provide increased torque by 35% and efficiency through two power strokes per cycle.
The document discusses a six-stroke engine developed by mechanical engineering students at the College of Engineering in Trivandrum, India. The engine was created as a student project and later commercialized as the Velozeta six-stroke engine. It modifies a four-stroke Honda engine to add two additional strokes. During the fifth stroke, air is inducted through a secondary system to scavenge the cylinder. During the sixth stroke, the air and exhaust gases are pushed out. This additional induction and exhaust process improves scavenging and cooling over a conventional four-stroke engine. The students received a patent for their design and went on to form the company Velozeta to commercialize the six-stroke engine technology.
The six-stroke engine was developed to improve fuel efficiency and reduce emissions compared to conventional four-stroke engines. It operates with two additional strokes: in one, water is injected into the hot cylinder and turns to steam, forcing the piston down. In the other, the steam is exhausted up. This captures wasted heat to improve efficiency. Issues include potential engine damage from thermal expansion and needing separate water tanks. However, benefits are 40-60% reduced fuel use and lower emissions than four-stroke engines.
This document summarizes a seminar presentation on the six-stroke engine. The six-stroke engine adds two additional strokes to the traditional four-stroke engine cycle, including a secondary power stroke where steam is generated from injected water and a secondary exhaust stroke. The Crower six-stroke engine prototype adds a steam stroke and steam exhaust stroke. Analysis shows the six-stroke engine reduces fuel consumption by 40% and emissions compared to a four-stroke engine. However, challenges include damage from injecting cold water into a hot cylinder and weight/space needs for separate water storage.
Six stroke-engine-presenation-by vijay b r Adskaro
The majority of the actual internal combustion engines, operating on different cycles have one common feature, combustion occurring in the cylinder after each compression, resulting in gas expansion that acts directly on the piston (work) and limited to 180 degrees of crankshaft angle.
According to its mechanical design, the six-stroke engine with external and internal combustion and double flow is similar to the actual internal reciprocating combustion engine. Six-stroke engine differentiates itself due to its thermodynamics cycle and a modified cylinder having one combustion chamber and one air heating chamber, both independent from cylinder. Combustion does not occur within the cylinder but in the supplementary combustion chamber, does not act immediately on the piston, and its duration is independent from the 180 degrees of crankshaft rotation that occurs during the expansion of the combustion gases (work).
The combustion chamber is kept inside the air heating chamber. Air pressure in the heating chamber increases and generate power for a supplementary work stroke by virtue of heat exchange through glowing combustion chamber walls. Several advantages result from this, one very important being the increase in thermal efficiency. In the present time internal combustion engine, important calorific losses are generated due to the required cooling of the combustion chamber walls.
In six-stroke cycle, two parallel functions occur in two chambers which result in eight event cycle: four event internal combustion cycle and four event external combustion cycles.
The first cycle of four events is of external combustion. It includes Event 1: pure air intake in the cylinder. Event 2: pure air compression in the heating chamber. Event 3: keeping pure air pressure in closed chamber where a maximum heat exchange occurs with the combustion chambers walls, without direct action on the crankshaft. Event 4: expansion of the super heated air in the cylinder, work. During this four event's cycle, the pure air never comes in direct contact with the heating source. The second cycle of four events is of internal combustion. It includes Event 5: re-compressions of pure heated air in the combustion chamber. Events 6: fuel injection and combustion in closed combustion chamber, without direct action on the crankshaft.
Events 7: combustion gases expanding in the cylinder, work. Event 8: combustion gases exhaust.
During these four events, the air comes in direct contact with the heating source.
This document discusses six-stroke engines, which aim to improve fuel efficiency over four-stroke engines. It describes the history of six-stroke engine development beginning in the 1880s. There are two categories of six-stroke engines - those that capture waste heat for an additional power stroke, and those with a second opposed piston. Notable engine designs in each category are discussed, including their working principles and advantages over conventional engines. The document focuses on the Velozeta six-stroke engine, outlining its modified parts and six-stroke cycle to achieve two power strokes per cycle for improved efficiency. Limitations of six-stroke engines are also addressed.
This document is a report on a six-stroke engine by student Madhvendra Verma. It defines a six-stroke engine as having two additional strokes compared to a four-stroke engine, making it more efficient and reducing emissions. It describes the main types of six-stroke engines, their basic components and workings, and compares six-stroke engines to four-stroke engines, noting advantages like higher thermal efficiency and lower fuel consumption, but also disadvantages like increased complexity and weight.
The document discusses six-stroke engines, which aim to improve fuel efficiency over traditional four-stroke engines. It outlines the history of six-stroke engine development since the 1880s. Key inventors included Samuel Griffin, Leonard Dyer, and Roger Bajulaz. Six-stroke engines capture waste heat from the combustion process to power an additional expansion and exhaust stroke. Designs use steam or air injection and can reduce fuel consumption by 40% while decreasing emissions. The document describes types like Beare Head and Bruce Crower engines, and analyzes the working principles, strokes, advantages, and applications of six-stroke technology.
The document describes Velozeta's six-stroke engine, which modifies a four-stroke Honda engine by adding two additional strokes. In the fifth stroke, air is inducted into the cylinder through a reed valve. In the sixth stroke, the exhaust valve remains open and a mixture of air and unburned gases is removed. This design promises reductions in fuel consumption and pollution of up to 65% while maintaining the production methods of a conventional four-stroke engine. The six-stroke engine could find applications in racing cars, heavy vehicles, and earth moving equipment.
The document discusses a six-stroke engine, which adds two additional strokes to the traditional four-stroke internal combustion engine. The Crower six-stroke engine injects water into the combustion chamber on the fifth stroke, where it is turned to steam to power an additional downstroke. This provides a second power stroke and cools the engine. Potential advantages include 40% reduced fuel consumption and lower emissions. Limitations include risks of damage from injecting cold water and additional system complexities. Improvements could involve pre-heating water and reusing condensed water to address these issues.
Detailed description of Six Stroke Engine with its advantages and disadvantages. It shows the various modifications required to develop a six stroke engine and its feasibility too.
This document describes a six-stroke engine designed by Malcolm Beare that combines aspects of two-stroke and four-stroke engines. It works by using a piston in the cylinder head that intakes and exhausts like a two-stroke while the bottom remains a conventional four-stroke. This hybrid design increases torque by 35% and efficiency, while reducing weight and parts compared to a four-stroke. It provides thermodynamic advantages such as greater expansion and slower piston acceleration. The six-stroke engine could replace conventional heads on existing engines.
The document discusses the concept of a six-stroke engine as a way to improve efficiency over traditional four-stroke engines. It provides examples of different six-stroke engine designs, including those that use a single piston or opposed pistons. The Crower and Bajulaz six-stroke engines are described in more detail. Testing showed the six-stroke engine could run smoothly. Advantages of six-stroke engines include reduced fuel consumption, pollution, friction, and increased torque and efficiency compared to four-stroke engines. They do not require major modifications to existing engine designs.
This document describes two 6-stroke engine designs that aim to improve fuel efficiency over traditional 4-stroke engines. The first is Bruce Crower's 6-stroke engine, which captures wasted heat from the 4-stroke cycle to power an additional steam stroke. The second is the Beare dual opposed piston 6-stroke engine, which replaces the cylinder head with an overhead piston arrangement, combining a 4-stroke bottom end with a 2-stroke head cycle. Both designs are analyzed against traditional 4-stroke engines and are found to increase power and torque output while improving fuel economy.
A six stroke engine describes a number of different approaches in the internal combustion engine to capture the waste heat from the four stroke Otto cycle and use it to power an additional power and exhaust stroke of the piston.
This document discusses six-stroke internal combustion engines. It describes two approaches for six-stroke engine design: using two additional strokes by the main piston or a second opposed piston. The Bajulaz and Bear Head engines are presented as examples. The Bajulaz uses dual fuels of diesel and methanol in six strokes: intake, compression, combustion, recompression, release, and exhaust. The Bear Head uses a single fuel through six strokes of intake, compression, combustion, power, exhaust, and intake. Six-stroke engines provide benefits over four-stroke engines like reduced fuel consumption and emissions. However, they also have disadvantages such as increased engine size and cost.
Six stroke by Hardeep singh BBDNITM,lucknowHardeep Singh
The document discusses the six stroke engine as a more efficient alternative to the traditional four stroke engine. It begins with an introduction explaining the need to increase engine efficiency. It then outlines the objectives of reducing fuel consumption, pollution, and increasing work extraction. It proceeds to classify and describe different six stroke engine designs including single piston approaches like the Crower engine and double piston approaches like the Beare Head engine. Key aspects of the six stroke cycle and comparisons to four stroke are summarized. Advantages include increased efficiency while limitations include higher costs. The conclusion maintains that the six stroke engine shows potential as a more eco-friendly and fuel efficient design for the future.
This document provides an overview of six-stroke engine designs that aim to improve efficiency over traditional four-stroke engines. It describes the working principles of various six-stroke engine types, including single piston designs by Griffin, Bajulaz, Crower, and Velozeta as well as opposed piston designs like the Beare head engine. The document also discusses the modifications needed to convert a conventional engine to a six-stroke design and analyzes the advantages of six-stroke engines like reduced fuel consumption and emissions.
The document discusses the six-stroke engine, which adds an additional power stroke compared to traditional four-stroke engines. It provides a brief history, describing how the concept was introduced in 1883 but the design did not fit automobiles until more recent inventions like the Bajulaz engine in 1989. The key features of six-stroke engines are described as increased efficiency, torque, and reduction in fuel consumption and pollution compared to four-stroke engines. Examples of different six-stroke engine types and designs are provided, along with their advantages and potential applications, particularly for automobiles where it could significantly reduce fuel use and emissions.
The document describes a six-stroke engine invented by Malcolm Beare that combines aspects of two-stroke and four-stroke engines. It retains the four-stroke piston below the cylinder head while adding a second piston in the cylinder head that operates like the piston in a two-stroke. This hybrid design increases power and torque over a four-stroke while reducing weight and complexity compared to conventional four-stroke engines. Key advantages include a 35% increase in torque and efficiency, lower reciprocating mass, and fewer overall parts.
A six stroke engine captures waste heat from the four stroke cycle to power an additional power and exhaust stroke. Designs use steam or air for the extra stroke, improving efficiency by 40% over four stroke engines. There are two types - single piston designs that add a steam/air stroke, and opposed piston designs that replace valves with a second piston. The additional stroke cools the engine, reducing weight and complexity versus four stroke designs by eliminating the cooling system. Six stroke engines provide increased torque by 35% and efficiency through two power strokes per cycle.
The document discusses a six-stroke engine developed by mechanical engineering students at the College of Engineering in Trivandrum, India. The engine was created as a student project and later commercialized as the Velozeta six-stroke engine. It modifies a four-stroke Honda engine to add two additional strokes. During the fifth stroke, air is inducted through a secondary system to scavenge the cylinder. During the sixth stroke, the air and exhaust gases are pushed out. This additional induction and exhaust process improves scavenging and cooling over a conventional four-stroke engine. The students received a patent for their design and went on to form the company Velozeta to commercialize the six-stroke engine technology.
The six-stroke engine was developed to improve fuel efficiency and reduce emissions compared to conventional four-stroke engines. It operates with two additional strokes: in one, water is injected into the hot cylinder and turns to steam, forcing the piston down. In the other, the steam is exhausted up. This captures wasted heat to improve efficiency. Issues include potential engine damage from thermal expansion and needing separate water tanks. However, benefits are 40-60% reduced fuel use and lower emissions than four-stroke engines.
This document summarizes a seminar presentation on the six-stroke engine. The six-stroke engine adds two additional strokes to the traditional four-stroke engine cycle, including a secondary power stroke where steam is generated from injected water and a secondary exhaust stroke. The Crower six-stroke engine prototype adds a steam stroke and steam exhaust stroke. Analysis shows the six-stroke engine reduces fuel consumption by 40% and emissions compared to a four-stroke engine. However, challenges include damage from injecting cold water into a hot cylinder and weight/space needs for separate water storage.
Six stroke-engine-presenation-by vijay b r Adskaro
The majority of the actual internal combustion engines, operating on different cycles have one common feature, combustion occurring in the cylinder after each compression, resulting in gas expansion that acts directly on the piston (work) and limited to 180 degrees of crankshaft angle.
According to its mechanical design, the six-stroke engine with external and internal combustion and double flow is similar to the actual internal reciprocating combustion engine. Six-stroke engine differentiates itself due to its thermodynamics cycle and a modified cylinder having one combustion chamber and one air heating chamber, both independent from cylinder. Combustion does not occur within the cylinder but in the supplementary combustion chamber, does not act immediately on the piston, and its duration is independent from the 180 degrees of crankshaft rotation that occurs during the expansion of the combustion gases (work).
The combustion chamber is kept inside the air heating chamber. Air pressure in the heating chamber increases and generate power for a supplementary work stroke by virtue of heat exchange through glowing combustion chamber walls. Several advantages result from this, one very important being the increase in thermal efficiency. In the present time internal combustion engine, important calorific losses are generated due to the required cooling of the combustion chamber walls.
In six-stroke cycle, two parallel functions occur in two chambers which result in eight event cycle: four event internal combustion cycle and four event external combustion cycles.
The first cycle of four events is of external combustion. It includes Event 1: pure air intake in the cylinder. Event 2: pure air compression in the heating chamber. Event 3: keeping pure air pressure in closed chamber where a maximum heat exchange occurs with the combustion chambers walls, without direct action on the crankshaft. Event 4: expansion of the super heated air in the cylinder, work. During this four event's cycle, the pure air never comes in direct contact with the heating source. The second cycle of four events is of internal combustion. It includes Event 5: re-compressions of pure heated air in the combustion chamber. Events 6: fuel injection and combustion in closed combustion chamber, without direct action on the crankshaft.
Events 7: combustion gases expanding in the cylinder, work. Event 8: combustion gases exhaust.
During these four events, the air comes in direct contact with the heating source.
This document discusses six-stroke engines, which aim to improve fuel efficiency over four-stroke engines. It describes the history of six-stroke engine development beginning in the 1880s. There are two categories of six-stroke engines - those that capture waste heat for an additional power stroke, and those with a second opposed piston. Notable engine designs in each category are discussed, including their working principles and advantages over conventional engines. The document focuses on the Velozeta six-stroke engine, outlining its modified parts and six-stroke cycle to achieve two power strokes per cycle for improved efficiency. Limitations of six-stroke engines are also addressed.
This document is a report on a six-stroke engine by student Madhvendra Verma. It defines a six-stroke engine as having two additional strokes compared to a four-stroke engine, making it more efficient and reducing emissions. It describes the main types of six-stroke engines, their basic components and workings, and compares six-stroke engines to four-stroke engines, noting advantages like higher thermal efficiency and lower fuel consumption, but also disadvantages like increased complexity and weight.
The document discusses six-stroke engines, which aim to improve fuel efficiency over traditional four-stroke engines. It outlines the history of six-stroke engine development since the 1880s. Key inventors included Samuel Griffin, Leonard Dyer, and Roger Bajulaz. Six-stroke engines capture waste heat from the combustion process to power an additional expansion and exhaust stroke. Designs use steam or air injection and can reduce fuel consumption by 40% while decreasing emissions. The document describes types like Beare Head and Bruce Crower engines, and analyzes the working principles, strokes, advantages, and applications of six-stroke technology.
The document describes Velozeta's six-stroke engine, which modifies a four-stroke Honda engine by adding two additional strokes. In the fifth stroke, air is inducted into the cylinder through a reed valve. In the sixth stroke, the exhaust valve remains open and a mixture of air and unburned gases is removed. This design promises reductions in fuel consumption and pollution of up to 65% while maintaining the production methods of a conventional four-stroke engine. The six-stroke engine could find applications in racing cars, heavy vehicles, and earth moving equipment.
The document discusses a six-stroke engine, which adds two additional strokes to the traditional four-stroke internal combustion engine. The Crower six-stroke engine injects water into the combustion chamber on the fifth stroke, where it is turned to steam to power an additional downstroke. This provides a second power stroke and cools the engine. Potential advantages include 40% reduced fuel consumption and lower emissions. Limitations include risks of damage from injecting cold water and additional system complexities. Improvements could involve pre-heating water and reusing condensed water to address these issues.
Detailed description of Six Stroke Engine with its advantages and disadvantages. It shows the various modifications required to develop a six stroke engine and its feasibility too.
This document describes a six-stroke engine designed by Malcolm Beare that combines aspects of two-stroke and four-stroke engines. It works by using a piston in the cylinder head that intakes and exhausts like a two-stroke while the bottom remains a conventional four-stroke. This hybrid design increases torque by 35% and efficiency, while reducing weight and parts compared to a four-stroke. It provides thermodynamic advantages such as greater expansion and slower piston acceleration. The six-stroke engine could replace conventional heads on existing engines.
The document discusses the concept of a six-stroke engine as a way to improve efficiency over traditional four-stroke engines. It provides examples of different six-stroke engine designs, including those that use a single piston or opposed pistons. The Crower and Bajulaz six-stroke engines are described in more detail. Testing showed the six-stroke engine could run smoothly. Advantages of six-stroke engines include reduced fuel consumption, pollution, friction, and increased torque and efficiency compared to four-stroke engines. They do not require major modifications to existing engine designs.
This document describes two 6-stroke engine designs that aim to improve fuel efficiency over traditional 4-stroke engines. The first is Bruce Crower's 6-stroke engine, which captures wasted heat from the 4-stroke cycle to power an additional steam stroke. The second is the Beare dual opposed piston 6-stroke engine, which replaces the cylinder head with an overhead piston arrangement, combining a 4-stroke bottom end with a 2-stroke head cycle. Both designs are analyzed against traditional 4-stroke engines and are found to increase power and torque output while improving fuel economy.
A six stroke engine describes a number of different approaches in the internal combustion engine to capture the waste heat from the four stroke Otto cycle and use it to power an additional power and exhaust stroke of the piston.
This document discusses six-stroke internal combustion engines. It describes two approaches for six-stroke engine design: using two additional strokes by the main piston or a second opposed piston. The Bajulaz and Bear Head engines are presented as examples. The Bajulaz uses dual fuels of diesel and methanol in six strokes: intake, compression, combustion, recompression, release, and exhaust. The Bear Head uses a single fuel through six strokes of intake, compression, combustion, power, exhaust, and intake. Six-stroke engines provide benefits over four-stroke engines like reduced fuel consumption and emissions. However, they also have disadvantages such as increased engine size and cost.
Six stroke by Hardeep singh BBDNITM,lucknowHardeep Singh
The document discusses the six stroke engine as a more efficient alternative to the traditional four stroke engine. It begins with an introduction explaining the need to increase engine efficiency. It then outlines the objectives of reducing fuel consumption, pollution, and increasing work extraction. It proceeds to classify and describe different six stroke engine designs including single piston approaches like the Crower engine and double piston approaches like the Beare Head engine. Key aspects of the six stroke cycle and comparisons to four stroke are summarized. Advantages include increased efficiency while limitations include higher costs. The conclusion maintains that the six stroke engine shows potential as a more eco-friendly and fuel efficient design for the future.
This document provides an overview of six-stroke engine designs that aim to improve efficiency over traditional four-stroke engines. It describes the working principles of various six-stroke engine types, including single piston designs by Griffin, Bajulaz, Crower, and Velozeta as well as opposed piston designs like the Beare head engine. The document also discusses the modifications needed to convert a conventional engine to a six-stroke design and analyzes the advantages of six-stroke engines like reduced fuel consumption and emissions.
The document discusses the six-stroke engine, which adds an additional power stroke compared to traditional four-stroke engines. It provides a brief history, describing how the concept was introduced in 1883 but the design did not fit automobiles until more recent inventions like the Bajulaz engine in 1989. The key features of six-stroke engines are described as increased efficiency, torque, and reduction in fuel consumption and pollution compared to four-stroke engines. Examples of different six-stroke engine types and designs are provided, along with their advantages and potential applications, particularly for automobiles where it could significantly reduce fuel use and emissions.
This document provides an overview of an air powered engine. It discusses the history of using compressed air to power engines. It then classifies air engines based on the number and position of cylinders. The key components of an air engine are described, including the compressor, PLC circuit, pulsed pressure control valve, cam, follower and air vessel. The working of the air engine is explained and compared to a two-stroke petrol engine. Finally, the advantages of lower emissions and costs, and limitations around refueling time and efficiency are presented.
The document summarizes an air-powered vehicle invented by Guy Nègre called the air car. The air car uses compressed air stored in carbon fiber or glass tanks to power an engine, producing no emissions. Nègre started Moteur Developement International in 1991 to develop the design. The air car is powered solely by compressed air and can travel 100-200 miles on a single tank. Refueling takes only a few minutes using an onboard compressor. The design provides a clean, high-performance vehicle without the pollution of gasoline cars.
The OPOC two-stroke engine developed by EcoMotors uses two opposing pistons within each cylinder that move in opposite directions. This design allows for increased efficiency over conventional two-stroke engines by enabling precise computerized control and reducing the number of parts. The OPOC engine provides advantages like higher power-to-weight ratio, ability to run on different fuels, and potential 45% increase in fuel efficiency when using multiple electrically-controlled engine modules. The key differences between OPOC and common two-stroke engines are the use of two pistons per cylinder instead of one and sensors/electrical components required for computerized control.
The document describes Velozeta's six-stroke engine, which modifies a four-stroke Honda engine by adding two additional strokes. In the fifth stroke, air is inducted into the cylinder through a reed valve. In the sixth stroke, the exhaust valve remains open and a mixture of air and unburned gases is removed. This design promises reductions in fuel consumption and pollution of up to 65% while maintaining the production methods of a conventional four-stroke engine. The six-stroke engine could find applications in racing cars, heavy vehicles, and earth moving equipment.
This document discusses 6-stroke engines and compares them to conventional 4-stroke engines. It outlines different types of 6-stroke engine designs, including single piston and opposed piston configurations. It then compares the key aspects of 4-stroke and 6-stroke engines such as efficiency, emissions, power output, and number of working fluids. The document also lists the modifications required to convert a standard 4-stroke engine to a 6-stroke design. Finally, it outlines the main advantages of 6-stroke engines, including reduced fuel consumption and pollution, less friction, higher efficiency, and more power from the additional power stroke.
The document discusses a six-stroke engine which aims to improve fuel efficiency and reduce emissions compared to traditional four-stroke engines. It works by adding two additional strokes: after the four-stroke cycle is completed, fresh air is drawn in and expelled to capture waste heat for a secondary power stroke. This provides two power strokes per cycle and can increase efficiency by 40% while reducing pollution by up to 65%. However, the engine is more complex with more components and lower power per cylinder compared to four-stroke designs. Widespread adoption in automobiles could significantly reduce fuel use and emissions globally if efficiency gains are realized.
The document discusses the new generation of two-stroke engines that combines advantages of two-stroke and four-stroke engines. It has 40% less emission and a high power-to-weight ratio. Some applications include large locomotives and marine engines. The engines are produced by MAN (Maschinenfabrik Augsburg-Nürnberg), a German manufacturer of machines.
This document discusses advances in internal combustion engines. It begins by introducing IC engines and classifying them based on combustion and strokes. Major areas of advancement discussed include engine design, material selection, timing controls, fuel injection, and combustion. Specific technologies covered are variable valve timing, active valve trains, cylinder deactivation, direct injection, superchargers, turbochargers, and six-stroke engines.
This document summarizes a seminar report on robotics. It defines a robot as an electromechanical device that can perform tasks automatically or by remote control. Robots are used in various industries like automotive, manufacturing, medical, military, space exploration, and research. The document discusses the applications of robots in these industries. It also explains the need for robots and identifies their main components as sensors, processors, actuators and motors that work together to give robots movement and ability to interact with their surroundings. The document provides examples of different sensors, motors and a sample Arduino code for robot movement.
Study and Analysis of Six Stroke EngineIJERA Editor
Six Stroke engine, the name itself indicates a cycle of six strokes out of which two are useful power strokes. According to its mechanical design, the six-stroke engine with external and internal combustion and double flow is similar to the actual internal reciprocating combustion engine. However, it differentiates itself entirely, due to its thermodynamic cycle and a modified cylinder head with two supplementary chambers: combustion and an air heating chamber, both independent from the cylinder. In this the cylinder and the combustion chamber are separated which gives more freedom for design analysis. In addition to the two valves in the four stroke engine two more valves are incorporated which are operated by a piston arrangement. The Six Stroke is thermodynamically more efficient because the change in volume of the power stroke is greater than the intake stroke and the compression stroke. The main advantages of six stroke engine includes reduction in fuel consumption by 40%, two power strokes in the six stroke cycle, dramatic reduction in pollution, adaptability to multi fuel operation. Six stroke engine’s adoption by the automobile industry would have a tremendous impact on the environment and world economy .
The increasing demands for low emissions and low fuel consumption in m odern combustion engines requires improved methods for combustion process. The Beare Head is a new type of six-stroke engine head design known as the �Beare Head� after its designer,Malcolm Beare. T he Beare Head uses a piston and ports very much like a two stroke engine to replace the overhead valve system t hat is found in four stroke engines today. The four-stroke block,piston and crankshaft remain unaltered. This combinat ion of two stroke and four-stroke technology has given the technology its name the �six stroke engi ne�. Six Stroke engine,the name itself indicates a cycle of six strokes out of which two are useful power strokes. According to its mechanical design,the six-stroke engine with external and internal combustion and double fl ow is similar to the actual internal reciprocating combustion engine.
This document describes a seminar submitted by Mr. Swami H. Masulkar on the topic of a six-stroke engine. The six-stroke engine incorporates two additional strokes beyond a conventional four-stroke engine. It includes two independent chambers, a combustion chamber and an air heating chamber, separated from the cylinder. This design allows for increased thermal efficiency over a traditional internal combustion engine. The six-stroke engine consists of an external combustion cycle and an internal combustion cycle, each with four events. It provides advantages such as reduced fuel consumption and emissions.
Analysis And Review Of Six Stroke Internal Combustion Engineiosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
A six-stroke engine provides two power strokes in each cycle, improving efficiency over a traditional four-stroke engine. It works by using the heat from the exhaust stroke to generate a secondary expansion and power stroke. The first four strokes are identical to a four-stroke engine. In the fifth stroke, water is injected into the hot combustion chamber and turns to steam, expanding to drive the piston down for a second power stroke. This recovers waste heat from the exhaust to improve fuel efficiency over a four-stroke engine by up to 30-40%. However, additional systems are required to inject water and utilize the secondary expansion, increasing complexity over a traditional design.
The document discusses the concept and working of a six-stroke internal combustion engine. A six-stroke engine generates power twice per cycle by adding two additional strokes to the traditional four-stroke cycle. This results in higher efficiency and lower fuel consumption compared to four-stroke engines. The six-stroke cycle includes intake, compression, power, exhaust, and two additional strokes where heated air is used to generate a second power stroke. Major inventors who developed six-stroke engines include Malcolm Beare, Bruce Crower, and Velozeta. The advantages are increased efficiency and reduced emissions, but disadvantages include increased complexity and cost.
Two laboratory reports were summarized:
1. A report on studying a two-stroke spark ignition engine, discussing its working principle, cycle, design parameters, types, parts, and comparing it to a four-stroke engine. The two-stroke was found to have more power strokes but lower efficiency.
2. A report on studying a rotary Wankel engine, explaining its four-stroke cycle arranged around an oval, types, parts, and concluding it is widely used with advantages over piston engines.
The document provides an overview of a seminar presentation on a six-stroke internal combustion engine. It includes an abstract, introduction, working principles, types of six-stroke engines, modifications made to convert a four-stroke engine to six-stroke, advantages such as reduced emissions and increased efficiency, and limitations. The six-stroke engine aims to extract more energy from the combustion process through adding an additional power stroke, utilizing the wasted heat from the four-stroke cycle. It functions by injecting water during the additional power stroke to generate steam for forcing the piston downward.
This document discusses the six-stroke engine, including its types and working. The six-stroke engine incorporates an additional stroke to the conventional four-stroke engine, introducing a second power stroke. There are three main types - the Crower, Beare Head, and Bajulaz engines. The Crower design injects water after the exhaust stroke to produce steam for an additional power stroke, while reducing fuel consumption by 40%. The Bajulaz engine provides two expansions in six strokes, dramatically reducing pollution while using multiple fuel types, and maintains costs comparable to a four-stroke engine. Six-stroke engines could potentially reduce fuel consumption and pollution levels without significant performance impacts.
Now a day the most difficult challenges in engine technology is to increase its thermal efficiency, If the efficiency is higher, than there will less fuel consumption and lower atmospheric emissions per unit of work produced by the engine. In Six Stroke engine, the name indicates a cycle of six strokes in which two are useful power strokes. The engine which we get by adding two more stroke in existing four stroke engines generates more power with higher fuel efficiency. The exhausted heat generated form four stroke cycle is used in this engine to get an additional power and exhaust stroke of the piston in the same cylinder. In this engine, steam is produce from water with the help of heat generated from four-stroke cycle, which is later used as a working fluid for the additional power stroke. This steam will force the piston down. As well as extracting power, the additional stroke cools the engine by water which is used for steam generation and removes the need for a cooling system which is used in four stroke Otto cycle and makes the engine lighter and giving 40% increased efficiency over the normal Otto cycle. In six stroke engine. The pistons go up and down six times for each injection of fuel. These six stroke engines have two power strokes: one by fuel, one by steam
The document discusses analyzing the implementation of a six-stroke engine in a hybrid car. A six-stroke engine consists of two combustion chambers, with the unused heat from the four-stroke Otto cycle powering additional strokes. This increases fuel efficiency by around 40% over a four-stroke engine. The authors aim to numerically analyze combining a six-stroke engine with hybrid technology in a car. Their calculations estimate that such a combo car could achieve a fuel efficiency of 34 km/L, higher than a typical hybrid. The combo design would have benefits of lower emissions and fuel use than a conventional hybrid, but also high initial costs.
This document summarizes a technical seminar presentation on a six-stroke engine by Chethan MR, an undergraduate student at C. Byregowda Institute of Technology in Kolar, India. The presentation covered the introduction, abstract, methodology, working principle, advantages, and disadvantages of a six-stroke engine. A six-stroke engine aims to improve efficiency and reduce emissions compared to four-stroke engines by adding two additional strokes - an additional compression and power stroke - to the piston cycle. Modifications are made to the crankshaft, camshaft, and cam followers to accommodate the additional strokes.
This document provides an overview of the 4-stroke internal combustion engine. It describes the basic parts of an engine including the cylinder block, piston, connecting rod, crankshaft, cylinder head, valves, camshaft and spark plug. It then explains the 4 strokes of the engine cycle: the intake stroke brings in air/fuel mixture, the compression stroke compresses it, the power stroke ignites the mixture to push the piston, and the exhaust stroke pushes out gases. Diesel engines are also briefly mentioned. Key physical principles like energy conversion, pressure, and the 3 states of matter are summarized.
The Cyclone Engine is built of three major components, the Steam Generator, Piston Block, and Condenser. The working fluid, deionized water, travels continuously through these three components. Beginning in the steam generator, moving into the pistons, then to the condenser, and finally pumped back into the steam generator.
This document summarizes and compares a 4-stroke and 6-stroke internal combustion engine. It explains that a 6-stroke engine adds two additional strokes - an air intake stroke and air exhaust stroke - to the standard 4-stroke cycle. This captures normally wasted heat to power an additional piston stroke, thereby increasing fuel efficiency by up to 50%. The 6-stroke engine also generates less pollution and heat compared to a 4-stroke while maintaining similar power levels. In conclusion, 6-stroke engine technology promises more efficient use of fossil fuels and could help transition to an era with limited oil reserves.
The document provides information about internal combustion engines, including their basic construction and operation. It discusses the four main parts of internal combustion engines - the engine block, cylinder head, pistons, and crankshaft. It also explains the four strokes of the Otto cycle (internal combustion engine cycle) - intake, compression, power, and exhaust strokes. The document summarizes the invention and development of both gasoline (Otto cycle) and diesel engines by Nikolaus Otto and Rudolf Diesel respectively.
The document describes different types of six-stroke engines, including the Bajulaz, Crower, and M4+2 engines. A six-stroke engine has two power strokes compared to the one power stroke of a conventional four-stroke engine. It captures wasted heat from the four-stroke cycle to power an additional stroke, improving efficiency. The Crower engine uses water injection to generate steam for an extra power stroke, reducing fuel consumption by 40%. Advantages of six-stroke engines include increased efficiency and reduced emissions, though they also have higher manufacturing costs.
This document describes the major components and functions of internal combustion engines, including pistons, connecting rods, crankshafts, cams, and valves. It then lists five key differences between spark ignition (SI) and compression ignition (CI) engines and provides explanations for several engine design and operating concepts such as power output, brake mean effective pressure, combustion efficiency, and theoretical vs actual pressure-volume diagrams.
An internal combustion engine uses combustion of fuel to drive pistons that convert the energy to mechanical energy. The first modern internal combustion engine was created by Nikolaus Otto in 1876. There are different types of internal combustion engines classified by fuel, strokes, ignition, cycle, number of cylinders, and cooling method. The key parts include the cylinder, piston, connecting rod, valves, crankshaft, and flywheel. A four-stroke engine intakes air/fuel, compresses it, combusts it to push the piston, and exhausts gases over two revolutions, while a two-stroke engine does this in one revolution.
An internal combustion engine uses combustion of fuel to drive pistons that convert the energy to mechanical energy. The first modern internal combustion engine was created by Nikolaus Otto in 1876. There are several types of internal combustion engines including four-stroke gasoline engines, two-stroke gasoline engines, diesel engines, and rotary engines. Engines can also be classified based on their fuel, number of strokes, ignition method, combustion cycle, number of cylinders, and cylinder arrangement. The key parts of an internal combustion engine include the cylinder, piston, connecting rod, valves, crankshaft, and flywheel.
1. Seminar Report Six Stroke Engine
Six Stroke Engine
www.seminarsonly.com
2. Seminar Report Six Stroke Engine
ABSTRACT
The increasing demands for low emissions and low fuel consumption in modern
combustion engines requires improved methods for combustion process. The Beare Head is
a new type of six-stroke engine head design known as the “Beare Head” after its designer,
Malcolm Beare. The Beare Head uses a piston and ports very much like a two stroke engine
to replace the overhead valve system that is found in four stroke engines today. The four-
stroke block, piston and crankshaft remain unaltered. This combination of two stroke and
four-stroke technology has given the technology its name the “six stroke engine”.
Six Stroke engine, the name itself indicates a cycle of six strokes out of which two
are useful power strokes. According to its mechanical design, the six-stroke engine with
external and internal combustion and double flow is similar to the actual internal
reciprocating combustion engine. However, it differentiates itself entirely, due to its
thermodynamic cycle and a modified cylinder head with two supplementary chambers:
combustion and an air heating chamber, both independent from the cylinder. In this the
cylinder and the combustion chamber are separated which gives more freedom for design
analysis. Several advantages result from this, one very important being the increase in
thermal efficiency.
It consists of two cycles of operations namely external combustion cycle and internal
combustion cycle, each cycle having four events. In addition to the two valves in the four
stroke engine two more valves are incorporated which are operated by a piston
arrangement.
The Six Stroke is thermodynamically more efficient because the change in volume
of the power stroke is greater than the intake stroke and the compression stroke. The main
advantages of six stroke engine includes reduction in fuel consumption by 40%, two power
strokes in the six stroke cycle, dramatic reduction in pollution, adaptability to multi fuel
operation.Six stroke engine’s adoption by the automobile industry would have a tremendous
impact on the environment and world economy.
www.seminarsonly.com
3. Seminar Report Six Stroke Engine
INTRODUCTION
The majority of the actual internal combustion engines, operating on different cycles
have one common feature, combustion occurring in the cylinder after each compression,
resulting in gas expansion that acts directly on the piston (work) and limited to 180 degrees
of crankshaft angel.
According to its mechanical design, the six-stroke engine with external and internal
combustion and double flow is similar to the actual internal reciprocating combustion
engine. However, it differentiates itself entirely, due to its thermodynamic cycle and a
modified cylinder head with two supplementary chambers: Combustion, does not occur
within the cylinder but in the supplementary combustion chamber, does not act immediately
on the piston, and it’s duration is independent from the 180 degrees of crankshaft rotation
that occurs during the expansion of the combustion gases (work).
The combustion chamber is totally enclosed within the air-heating chamber. By heat
exchange through the glowing combustion chamber walls, air pressure in the heating
chamber increases and generate power for an a supplementary work stroke. Several
advantages result from this, one very important being the increase in thermal efficiency. IN
the contemporary internal combustion engine, the necessary cooling of the combustion
chamber walls generate important calorific losses.
www.seminarsonly.com
4. Seminar Report Six Stroke Engine
ANALYSIS OF SIX STROKE ENGINE
Six-stroke engine is mainly due to the radical hybridization of two- and four-stroke
technology. The six-stroke engine is supplemented with two chambers, which allow parallel
function and results a full eight-event cycle: two four-event-each cycles, an external
combustion cycle and an internal combustion cycle. In the internal combustion there is
direct contact between air and the working fluid, whereas there is no direct contact between
air and the working fluid in the external combustion process. Those events that affect the
motion of the crankshaft are called dynamic events and those, which do not effect are called
static events.
VIEW OF A SIX STROKE ENGINE
ANALYSIS OF EVENTS:
Event 1: Pure air intake in the cylinder (dynamic event)
1. Intake valve.
2. Heating chamber valve
3. Combustion chamber valve.
4. Exhaust valve
5. Cylinder
6. Combustion chamber.
www.seminarsonly.com
5. Seminar Report Six Stroke Engine
7. Air heating chamber.
8. Wall of combustion chamber.
9. uel injector.
10. Heater plug.
Event 2: Pure air compression in the heating chamber.
Events 3: fuel injection and combustion in closed combustion chamber, without
direct action on the crankshaft (static event).
Events 4: Combustion gases expanding in the cylinder, work (dynamic event).
Events 5: Combustion gases exhaust (dynamic event).
www.seminarsonly.com
6. Seminar Report Six Stroke Engine
Event 6: Keeping pure air pressure in closed chamber where a maximum heat
exchange occurs with the combustion chambers walls, without direct action on the
crankshaft (static event).
Event 7: Expansion of the Super heat air in the cylinder work (dynamic Event).
Event 8: Re-compressions of pure heated air in the combustion chamber
(Dynamic event).
www.seminarsonly.com
7. Seminar Report Six Stroke Engine
SIX-STROKE ENGINE CYCLE DIAGRAM
External combustion cycle: (divided in 4 events):
No direct contact between the air and the heating source.
e1. (Event 1) Pure air intake in the cylinder (dynamic event).
e2. (Event 2) Compression of pure air in the heating chamber (dynamic event).
e3. (Event 3) Keeping pure air pressure in closed chamber where a maximum heat exchange
occurs with the combustion chambers walls, without direct action on the crankshaft (static
event).
e4. (Event 4) Expansion of the super heated air in the cylinder, work (dynamic event).
Internal combustion cycle: (divided in 4 events)
Direct contact between the air and the heating source.
I1. (Event 5) Re-compression of pure heated air in the combustion chamber (dynamic
event)
www.seminarsonly.com
8. Seminar Report Six Stroke Engine
I2. (Event 6) Fuel injection and combustion n closed combustion chamber, without direct
action on the crankshaft (static event).
I3. (Event 7) Combustion gases expanding in the cylinder, work (dynamic event).
I4. (Event 8) Combustion gases exhaust (dynamic event).
CONSTRUCTIONAL DETAILS:
The sketches shows the cylinder head equipped with both chambers and four valves
of which two are conventional (intake and exhaust). The two others are made of heavy-duty
heat-resisting material. During the combustion and the air heating processes, the valves
could open under the pressure within the chambers. To avoid this, a piston is installed on
both valve shafts which compensate this pressure. Being a six-stroke cycle, the camshaft
speed in one third of the crankshaft speed.
The combustion chambers walls are glowing when the engine is running. Their
small thickness allows heat exchange with the air-heating chamber, which is surrounding
the combustion chamber. The air-heating chamber is isolated from the cylinder head to
reduce thermal loss.
The combustion and air-heating chambers have different compression ratio. The
compression ratio is high for the heating chamber, which operates on an external cycle and
is supplied solely with pure air. On the other hand, the compression ratio is low for the
combustion chamber because of effectively increased volumen, which operates on internal
combustion cycle.
The combustion of all injected fuel is insured, first, by the supply of preheated pure
air in the combustion chamber, then, by the glowing walls of the chamber, which acts as
multiple spark plugs. In order to facilitate cold starts, the combustion chamber is fitted with
a heater plug (glow plug). In contrast to a diesel engine, which requires a heavy
construction, this multi-fuel engine, which can also use diesel fuel, may be built in a much
lighter fashion than that of a gas engine, especially in the case of all moving parts.
As well as regulating the intake and exhaust strokes, the valves of the heating and
the combustion chambers allow significantly additional adjustments for improving
efficiency and reducing noise.
www.seminarsonly.com
9. Seminar Report Six Stroke Engine
ADVANTAGES OF SIX STROKE OVER FOUR STROKE ENGINES:
The six stroke is thermodynamically more efficient because the change in volume
of the power stroke is greater than the intake stroke, the compression stroke and the Six
stroke engine is fundamentally superior to the four stroke because the head is no longer
parasitic but is a net contributor to – and an integral part of – the power generation within
exhaust stroke. The compression ratios can be increased because of the absent of hot spots
and the rate of change in volume during the critical combustion period is less than in a Four
stroke. The absence of valves within the combustion chamber allows considerable design
freedom.
Main advantages of the six-stroke engine:
Reduction in fuel consumption by at least 40%:
An operating efficiency of approximately 50%, hence the large reduction in
specific consumption. the Operating efficiency of current petrol engine is of the order of
30%. The specific power of the six-stroke engine will not be less than that of a four-stroke
petrol engine, the increase in thermal efficiency compensating for the issue due to the two
additional strokes.
Two expansions (work) in six strokes:
Since the work cycles occur on two strokes (360 0 out of 10800 ) or 8% more
than in a four-stroke engine (1800 out of 720 ), the torque is much more even. This lead to
very smooth operation at low speed without any significant effects on consumption and the
emission of pollutants, the combustion not being affected by the engine speed. These
advantages are very important in improving the performance of car in town traffic.
Dramatic reduction in pollution:
Chemical, noise and thermal pollution are reduced, on the one hand, in proportion to
the reduction in specific consumption, and on the other, through the engine’s own
characteristics which will help to considerably lower HC, CO and NOx emissions.
www.seminarsonly.com
10. Seminar Report Six Stroke Engine
Furthermore, it’s ability to run with fuels of vegetable origin and weakly pollutant gases
under optimum conditions, gives it qualities which will allow it to match up to the strictest
standards.
Multifuel:
Multifuel par excellence, it can use the most varied fuels, of any origin (fossil or
vegetable), from diesel to L.P.G. or animal grease. The difference in inflammability or
antiknock rating does not present any problem in combustion. It’s light, standard petrol
engine construction, and the low compression ration of the combustion chamber; do not
exclude the use of diesel fuel. Methanol-petrol mixture is also recommended.
www.seminarsonly.com
11. Seminar Report Six Stroke Engine
PROTOTYPE OF A SIX STROKE ENGINE:
V
olume angle diagram for 4 stroke engine Volume angle diagram for 6 stroke engine
www.seminarsonly.com
12. Seminar Report Six Stroke Engine
Pressure-volume diagrams for Dual cycle Torque-angle diagram for 6 stroke engine
www.seminarsonly.com
13. Seminar Report Six Stroke Engine
CONCLUSION
There is, at this day, no wonder solution for the replacement of the internal
combustion engine. Only improvements of the current technology can help it progress
within reasonable time and financial limits. The six-stroke engine fits perfectly into this
view. It’s adoption by the automobile industry would have a tremendous impact on the
environment and world economy, assuming up to 40% reduction in fuel consumption and
60% to 90% in polluting emissions, depending on the type of the fuel being used.
An allied with the so-responsive pickup and a wide spread of usable power, makes
the bike ridiculously easy to ride. You hardly need to use the gearbox, just park it in top
gear and ride. Even backing off the throttle in the middle of a turn doesn’t require hooking
down a gear — just crack it open when you’re ready and feel the front wheel start to aviate
on you. And hands-on assessment of the six-stroke leads to some inescapable conclusions.
The industry trend away from cheaper two-stroke power in favor of costlier but cleaner
four-stroke engines in both Europe, Japan and South East Asia makes a concept like the
Beare six-stroke, which offers the best of both worlds, project a strong case towards volume
manufacture.
www.seminarsonly.com
14. Seminar Report Six Stroke Engine
References
1. www.sixstroke.com
2. Excerpts from Beare technology.
3. High speed internal combustion engines by John B. Heywood.
4. http://www.jack-brabham-engines.com/
5. http://www.autocarindia.com/new/Information.asp?id=1263
6. www.seminarsonly.com
www.seminarsonly.com