This document discusses fluid motion within internal combustion engines. It describes several types of fluid motion that occur during the engine cycle, including swirl, squish, tumble, and blowdown. Swirl enhances air-fuel mixing and combustion speed. Squish and tumble generate additional rotational and radial motions near top dead center to further mix the fuel and air. Turbulence throughout the cycle aids various engine processes. The exhaust gases exit the cylinder during blowdown and pass through the exhaust manifold, catalytic converter, tailpipe and muffler before being vented outside.
4 stroke petrol engine and 4 stroke diesel engine Komal Kotak
This presentation is all about four stroke petrol engine and four stroke diesel engine from the subject elements of mechanical engineering in mechanical engineering in first year of mech. engineering.
4 stroke petrol engine and 4 stroke diesel engine Komal Kotak
This presentation is all about four stroke petrol engine and four stroke diesel engine from the subject elements of mechanical engineering in mechanical engineering in first year of mech. engineering.
In these we discuss about what is Turbo Charger, why we use it. What is the technology behind it. Parts of TC. Design and operation. Response time. What is Boost Control in TC and who it works. Failures in TC and its maintenance. Advantages and Disadvantages.
Complete guide to Internal Combustion engines (IC engines)Syed Yaseen
The following presentation is a part of an online course called "A brief overview of IC engine". The presentation contains complete information about IC engines and will be helpful for students of Mechanical and Automobile engineering. The presentation is full of graphics to reduce the efforts of students for imagination and help them to understand the concept as soon as possible.
The common rail fuel injection system is finding increasing use engines as it has the potential to drastically cut emissions and fuel consumption. This system provides control of many important parameters linked to the injection system. It has a wide range of applications, From small to heavy-duty engines.
in this presentation , the different engine inefficiencies has been discussed including all sort of friction losses which affects the brake power of the engine. It includes volumetric efficiency, thermal efficiency, IMEP, BMEP, brake power etc.
In these we discuss about what is Turbo Charger, why we use it. What is the technology behind it. Parts of TC. Design and operation. Response time. What is Boost Control in TC and who it works. Failures in TC and its maintenance. Advantages and Disadvantages.
Complete guide to Internal Combustion engines (IC engines)Syed Yaseen
The following presentation is a part of an online course called "A brief overview of IC engine". The presentation contains complete information about IC engines and will be helpful for students of Mechanical and Automobile engineering. The presentation is full of graphics to reduce the efforts of students for imagination and help them to understand the concept as soon as possible.
The common rail fuel injection system is finding increasing use engines as it has the potential to drastically cut emissions and fuel consumption. This system provides control of many important parameters linked to the injection system. It has a wide range of applications, From small to heavy-duty engines.
in this presentation , the different engine inefficiencies has been discussed including all sort of friction losses which affects the brake power of the engine. It includes volumetric efficiency, thermal efficiency, IMEP, BMEP, brake power etc.
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Functional Fuels for Advanced Engine TechnologyAfton Chemical
Global economies are currently in the midst of a rapid evolution in the transportation sector. Efforts to improve efficiency and fuel economy while reducing emissions will be the dominant forces driving changes in future engine and fuel technologies.
The development of effective fuel additive technology will be a key factor in enabling continued advancements in engine and fuel performance.
Afton Chemical presented on this topic at Simpósio Internacional de Engenharia Automotiva (SIMEA) 2016 in Sao Pablo, Brazil, an annual event that has been hosted by the Brazilian Association of Automotive Engineering for over 30 years. Titled ‘Functional Fuel for Advanced Vehicle Technology’, the presentation delved into the challenges and opportunities presented by changing engine designs and discussed how fuel additives are enabling evolution in fuel and vehicle technology.
A Critical Review on the Concept of Effect on Scavenging and Fuel Injection T...ijsrd.com
In present study, A spark ignition and a compression ignition engine with uniflow valve scavenging of the cylinder and a transfer valve in the piston crown have been described. A great disadvantage of two-stroke engines is ports which are made in the cylinder bearing surface. Under the heat which is realised during the combustion, the thermal extension of the range in proximity of the ports and other parts of the cylinder is different and so the distortion of the geometry of the cylinder liner surface force the designer to make the clearance between the piston and the cylinder liner bigger. This paper presents the critical review to study the effect of fuel injection timing and scavenging using diesel on the combustion and emission characteristics of a single cylinder, two stroke, air cooled direct injection diesel engine. It is well known that injection strategies including the injection timing and pressure play the most important role in determining engine performance, especially in scavenging emissions. However, the injection timing and pressure quantitatively affect the performance of the diesel engine.
Design and Analysis of the Effect of a Modified Valve with Helical Guideways ...IJERA Editor
The in-cylinder flow of an Internal Combustion Engine(ICE) has drawn much attention of the automotive
researchers and scientists in the present time. A good swirl promotes fast combustion and improves the
efficiency. Based upon this concept, this paper describes the results of a study conducted to investigate the
effects of a “modified valve with helical guide ways” on the performance of combustion. Small internal
combustion engine is designed to be part of a very efficient vehicle to enter a consumption marathon. The
engine should run at low speeds, in order to have low mechanical losses but combustion should be fast, enabling
good combustion efficiency. Therefore, high turbulence is required prior to combustion within the cylinder,
hence the concept of swirl is introduced and its effect on the combustion within the cylinder has been
ascertained in the present work. Assessment of the effect of swirl on combustion performance within the
cylinder requires excessive experimentation by modifying the design of various components of combustion
chamber. Therefore, in the present work using the concept of CFD the simulation of combustion phenomenon
has been carried out and the output parameters in the form of swirl ratio has been assessed. The modelling of
combustion chamber has been carried out using CATIA software and the same is imported to analysis software
ANSYS- CFX module. Here, the performance of the model is assessed by the swirl ratio. The swirl ratio of the
modified valve (Valve with helical guide ways) is obtained as 1.45 which is much higher than a normal valve
with swirl ratio 0.65 as assessed from the present work.
A century and nearly two decades later there has been immense progress in the field of IC engines, though many phenomenon taking place are still to be understood physically. This blog aims at comprehension of some of the astonishing research that has been done in this field restricting our interest to combustion with some amusing facts.
It contains Working, Construction of 4 stroke petrol engine with PV Diagram and Advantages & Disadvantages.Very useful & all info compiled at same place.
The IC engine has seen numerous revolutionary and e volutionary modifications in technology and design over the past few decades. The sole motto behind the modifications wa s to increase the overall efficiency of the IC Engi ne including volumetric and thermal efficiency. Recently few benchmarking techn ologies like the CRDI,MPFI,HCCI,etc. in the Otto cycle and Diesel cycle engines have created an enormous revolution in the automobile industry. In spite of these technologica l and design advances,the efficiencies are not being more than a particular l imit. However,the concept of split cycle engines has dra stically increased the overall performance in all respect. The split cycle concept basically separates the fou r strokes of the conventional cycle. The Scuderi engine one of the best-in-class engine desi gns based on the split cycle concept. The Scuderi engine works on the split cycle and gives higher efficiency than the previous split cycle engines resulting overall high perform ance. It also eliminates the problems faced by previous engines based on the spl it cycle in terms of breathing (volumetric efficien cy) and thermal efficiency. This paper throws light on the greater volumetric,thermal and overall efficiency key points related t o the Scuderi Engines.
To Study the Properties of Self Compacting Concrete Using Recycled Aggregate ...paperpublications3
Abstract: Self compacting concrete (SCC) was first developed in 1988 in Japan to achieve durable concrete structures. As SCC has various advantage over normal concrete, it also posses a major disadvantage i.e it is uneconomical. Therefore, in this dissertation work emphasis has been laid to reduce the cost of the SCC without reducing the strength of the SCC, hence by-product which are available cheaply and easily i.e recycled aggregate (demolish concrete and fly ash) has been used to reduce the manufacturing cost without reducing the strength of SCC. Hence in this work demolished concrete in various % (I.e 5%, 10%, 15%&20% of T.C.A) has been used as partial replacement of coarse aggregate and fly ash with 45% replacement of cement has been used. To enhance the property of SCC made with the use of demolish concrete and fly ash, polypropylene fiber has been added to the mix. Polypropylene fiber in various % (i.e 0.1%, 0.15%&0.20% of Wt. of cement) has been added in the mix which contain demolish concrete and gave highest strength i.e (10% demolish concrete).
Study of Tumble Measurement on a Steady State Flow Rigpaperpublications3
Abstract: This paper deals with the study of Tumble flow on a Steady State Flow Rig. Recently stratified charge lean burn engines and gasoline direct injection engines (GDI) are being developed in order to reduce CO2 emission. In these combustion concept, tumble or inclined axis swirl is required not only to enhance turbulence intensity before combustion but, also to control mixture stratification and air-fuel concentration distribution. Tumble flow is the flow of charge along a line perpendicular to the vertical axis of the cylinder. Its mainly depend upon inlet port design, piston head design shrouding of valve and orientation of inlet port. There are various methods used to calculate the tumble flow, which are PIV (Particle Image Velocimetry), PTV (Particle Tracking Velocimetry), LDA (Laser Doppler Anemometry) and Steady State Flow Rig. Here we are concentrating on the Steady State Flow Rig with a paddle wheel arrangement. This test rig helps in designing suitable intake ports. This test rig measures the tumble in terms of paddle wheel RPM in accordance with the valve lift. Working principle of this test rig and its limitations are studied.
Six stroke engine using gasoline and r 123eSAT Journals
Abstract In any Internal Combustion Engine, only 35% of the available energy is converted into the crankshaft energy. The remaining portion of the energy is either expelled into the atmosphere or it increases the temperature of the engine block. This is desirable as the conversion of heat energy into mechanical energy is more efficient at higher temperatures. However, beyond a certain limit it sets up thermal stresses and in extreme cases it causes engine seizing. Thus a cooling system is employed to remove this heat and transfer it into the atmosphere with the help of a radiator or a heat exchanger. In a six stroke engine, this heat transferred by the coolant is reduced. As there have been several advancements in the recovery of energy from exhaust gases such as turbochargers, Thermoelectric Generators and other such techniques, energy recovery by adding two strokes with a working fluid as a refrigerant is unique. The study shows that around 30% of the heat is carried away by the coolant and hence this is amount of energy that can theoretically be harvested. Since this offers a superior cooling system, the chances of detonation is also considerably lowered. By reducing the amount of heat expelled into the atmosphere, the overall efficiency is improved. In today’s age of rapidly depleting natural resources (fossil fuels), it is of utmost importance to converse these non-renewable sources of energy. Since the IC Engine has reached a state of saturation, waste heat recovery is the best way to improve the efficiency and hence reduce the fuel consumption. Keywords: Six Stroke Engine, Waste heat Recovery, Cooling System, and Efficiency
A COMPREHENSIVE REVIEW ON COMBUSTION OF COMPRESSION IGNITION ENGINES USING BI...IAEME Publication
The world today is confronted with a twin crisis of fossil fuel depletion and environmental degradation. Rapid depletion of petroleum derived fuels has forced the researchers to find out
alternative fuels for IC engines. Biodiesel is an alternative fuel for conventional diesel engines and can be used without major modification of the engines
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.