One of the most difficult challenges in engine technology today is the urgent need to increase engine thermal efficiency. In the first approach, the engine captures the heat lost from the four-stroke Otto cycle or Diesel cycle and uses it to power an additional power and exhaust stroke of the piston in the same cylinder. The pistons in this type of six-stroke engine go up and down six times for each injection of fuel. Fresh water is injected into the cylinder after the exhaust stroke and is quickly turned to superheated steam, which causes the water to expand to 1400-1600 times its volume and forces the piston down for an additional stroke.
A cooling system also serves to maximize volumetric charge efficiency by reducing the temperature of the charge during intake. This design also claims to reduce fuel consumption by 35%-40%.
One of the most difficult challenges in engine technology today is the urgent need to increase engine thermal efficiency. In the first approach, the engine captures the heat lost from the four-stroke Otto cycle or Diesel cycle and uses it to power an additional power and exhaust stroke of the piston in the same cylinder. The pistons in this type of six-stroke engine go up and down six times for each injection of fuel. Fresh water is injected into the cylinder after the exhaust stroke and is quickly turned to superheated steam, which causes the water to expand to 1400-1600 times its volume and forces the piston down for an additional stroke.
A cooling system also serves to maximize volumetric charge efficiency by reducing the temperature of the charge during intake. This design also claims to reduce fuel consumption by 35%-40%.
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.
MRPE works on the principle of magnetic repulsion and it's a fuel less engine so there is no combustion of fossil fuels. MRP engine is a modified version of reciprocating engine.
The prototype is an idea which uses the property of an electromagnet by virtue of which it changes the polarity of its poles whenever the direction of current is changed. This variation in polarity is utilized to attract or repel the permanent magnet attached to the piston. The usage of relay and timer will limit the output of the engine. By using an ECU in the engine instead, power can be obtained on each stroke which will result in an increased output.
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.
MRPE works on the principle of magnetic repulsion and it's a fuel less engine so there is no combustion of fossil fuels. MRP engine is a modified version of reciprocating engine.
The prototype is an idea which uses the property of an electromagnet by virtue of which it changes the polarity of its poles whenever the direction of current is changed. This variation in polarity is utilized to attract or repel the permanent magnet attached to the piston. The usage of relay and timer will limit the output of the engine. By using an ECU in the engine instead, power can be obtained on each stroke which will result in an increased output.
Variable compression ratio and heat balance sheetdishantpati
Variable compression ratio is a technology to adjust the compression ratio of an internal combustion engine while the engine is in operation. This is done to increase fuel efficiency while under varying loads.
Variable compression ratio is a technology to adjust the compression ratio of an internal combustion engine while the engine is in operation.
This is done to increase fuel efficiency while under varying loads. Higher loads require lower ratios to be more efficient and vice versa.
Variable compression engines allow the compression ratio to be changed for various working conditions, and obtain the required compression ratio for the required load conditions.
six-stroke engines may be great in improving efficiency, fuel consumption, etc but they may limit the range of a vehicle fitted with them. The range of distance in which a vehicle can cover one tank full of fuel is tank capacity*fuel economy.
difination and explaintion of 2 strike vs 4stroke enginees including defination, ragulation types of and examples explation for educations and projects
𝘼𝙣𝙩𝙞𝙦𝙪𝙚 𝙋𝙡𝙖𝙨𝙩𝙞𝙘 𝙏𝙧𝙖𝙙𝙚𝙧𝙨 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙛𝙖𝙢𝙤𝙪𝙨 𝙛𝙤𝙧 𝙢𝙖𝙣𝙪𝙛𝙖𝙘𝙩𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨. 𝙒𝙚 𝙝𝙖𝙫𝙚 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙥𝙡𝙖𝙨𝙩𝙞𝙘 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙪𝙨𝙚𝙙 𝙞𝙣 𝙖𝙪𝙩𝙤𝙢𝙤𝙩𝙞𝙫𝙚 𝙖𝙣𝙙 𝙖𝙪𝙩𝙤 𝙥𝙖𝙧𝙩𝙨 𝙖𝙣𝙙 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙛𝙖𝙢𝙤𝙪𝙨 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨 𝙗𝙪𝙮 𝙩𝙝𝙚 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙛𝙧𝙤𝙢 𝙪𝙨.
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2. The dilemma of the present four stroke
internal combustion engine
• High efficiency requires high expansion ratio.
• High power density requires low compression ratio.
but impossibly
expansion ratio = compression ratio
3. To cut the knot we prefer an engine
• High efficiency requires still high expansion ratio.
• High power density requires still low compression ratio.
and possibly
expansion ratio ≠ compression ratio.
4. How can it be possible to turn
impossible to possible?
5. Let’s change the things
• Why not add an additional degree of freedom?
• Why not concentrate the different cylinders on different tasks?
• Why not add an additional stroke to the engine and increase its
efficiency?
there is no reason not to try it
6. Requirements of this engine
• The building of new engine is a cast cylinder head, a machined solid
cylinder block and separate electrically powered oil and water pumps.
• Two overhead camshafts operate conventional coil spring valve with cam
shafts for four stroke cylinders running at one half crank shaft speed and
the fifth stroke’s cylinder camshaft running at crankshaft speed.
• The engine also turbocharged to increase the engine speed.
• The engine runs an overall expansion ratio in the region of 14.5:1.
7. A new engine is born
• Second and third Cylinders(C2,C3) are working on the four stroke cycle
mode and the first cylinder(C1) acting on two stroke cycle mode.
• The exhaust gases make the first cylinder to make the expansion stroke.
• For this we requires an low compression cylinder as the first cylinder.
let’s the working process of this cylinder.
13. 5- stroke engine performance
figures
• Engine capacity 700cc(turbocharged).
• Peak power 130 bhp@7000rpm.
• Peak torque 166 Nm @ 5000rpm.
• Fuel consumption of only 226 g/Kw h.
14. Advantages of 5-stroke engine
• A secondary cylinder provides an additional expansion process enabling
extra work to be extracted.
• The expansion ration is of 14.5:1 approaching up to diesel engine.
• Minimized pumping work.
• The compression ratio can be reduced to delay knock onset without
reduction in performance.
• The fuel consumption does not rise as suddenly with increasing in BMEP,
as retarding rejects more energy in the expansion cylinder.
• The engine uses 100% conventional technology.
• Producing more thermal efficiency than four stroke engine.
15. Disadvantages of 5- stroke engine
• 5% costlier than the current 4-stroke engine.
• The entire construction requires current manufacturing technology.
16. Further improvement in this engine
• Brake specific fuel consumption of 215 g/Kw h.
• 20% lighter than the existing production engines.
• Power density of 150 bhp/L
17. It is a simply an ingenious efficiency engine with less fuel
emissions than current engines.