internal combustion engine presentation

7/28/2019 Internal combustion engine presentation

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Syllabus: Sections A, B,C & D

Books:Text Books: 1.Internal Combustion EnginesV. Ganesan, Pub.-Tata

McGraw-Hill.

2.Gas Turbines - V. Ganesan, Pub.- Tata McGraw Hill.

3. Engineering fundamental of the I.C.Engine WillardW.Pulkrabek, Pub.-PHI,India

Reference Books:1. Internal Combustion Engines & Air pollution- Obert E.F,

Pub.-Hopper & Row Pub., New York2. Internal Combustion Engines Fundamentals- John B.

Heywood, Pub.McGraw Hill.


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Introduction:

Energy conversion: An engine

Heat Engine

Air standard Cycles:

. Internal combustion engine(IC Engine)

and external combustion engine (EC Engine)

. Classification of Heat Engines


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Assignment no 01:

Write a short note on classification of heat engines.


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. Engine components and Nomenclature


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. Cycles of operation in four stroke

I.C. Engines.

. Comparison of SI and CI Engines.

. Two stroke engine.

. Comparison of four and two stroke engines.

. Classification of IC Engines


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Assignment no 02:

a) Comparison of SI and CI Engines.

b) Comparison of four and two stroke engines.


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.Wankle Engine


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. Assumptions made in air standard cycle.

. Carnot cycle

. Otto cycle.

. Diesel cycle


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Assignment no 03:

a)Write a note on Wankel Engine.

b) Write down assumptions made for air standard

cycles.


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. Dual combustion cycle.

. Comparison of Otto, diesel and dual combustion

cycles.

. Sterling and Ericsson cycles.


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Assignment no 04:

Explain diesel combustion cycle with diagram.

Derive expression for its efficiency and work done.


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. Air standard efficiency

. Specific work output.

. Specific weight, work ratio.

. Mean effective pressure;

. Deviation of actual engine cycle from ideal cycle.


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Assignment no 05:

Define air standard efficiency, specific work output,

specific work ratio and mean effective pressure.


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Carburetion, fuel Injection and Ignition

systems:

. Various types of fuels used

. Qualities of engine fuels.

. Mixture requirements for various operating

conditions in S.I.Engines.

. Elementary carburetor.


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Assignment no 06:

Describe an elementary carburetor. Draw its sketch

and label parts.


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Injection:

. Functions

. Parts of an injection system

. Requirements of a diesel injection system, types of

injection systems

. Petrol injection, requirements of ignition system;


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Assignment no 07:

Describe injection system for petrol engine.


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. Types of ignition systems,

. Firing order

. Ignition timing

. Spark Plug.


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Assignment no 08:

Draw a neat sketch of spark plug and label its parts.

Also write a note on spark plug.


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Combustion in I.C. Engines :

. S.I. engines; Ignition limits

. Stages of combustion in S.I. Engines

. Ignition lag.


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Assignment no 09:

What is ignition lag?


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. Velocity of flame propagation

. Knocking in SI engines

. Combustion chambers in SI Engines

. Combustion in CI Engines

. Stages of combustion in CI engines

. Detonation

. Effects of engine variables on detonation, theoriesof detonation

. Octane rating of fuels.


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Assignment no 10:

What is detonation in petrol engine.


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. Pre-ignition

. Combustion chambers in CI engines.


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Assignment no 11:

Write a note on combustion chamber of S.I engine.


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. Stages of combustion in C.I. Engines

. Delay period; variables affecting delay period


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Assignment no 12:

Explain stages of combustion in C I engines.


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. knock in C.I. engines

. Cetane rating


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Assignment no 13:

What is knocking in C I engine.


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. C.I. engine combustion chambers.


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Lubrication and Cooling Systems:

. Functions of a lubricating system

. Types of lubrication system; mist, wet sump

and dry sump systems.


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Assignment no 15:

Explain wet sump lubrication system with sketch.


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. Properties of lubricating oil.

. SAE rating of lubricants.

. Engine performance and lubrication.


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Assignment no 16:

What are properties of a lubricating oil.


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Necessity of engine cooling.

. Disadvantages of overcooling

. Cooling systems; air-cooling, water cooling;

radiators.


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Assignment no 17:

Explain water cooling system of IC engines.


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Engine Testing and Performance:

Performance parameters:

BHP

IHP

Mechanical efficiency

Brake mean effective pressure

Indicative mean effective pressure


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Torque

Volumetric efficiency

Specific fuel consumption, (BSFC, ISFC)

Thermal efficiency

Heat balance


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Basic engine measurements;

Fuel and air consumption,

Brake power,

Indicated power and

Friction power,

Heat lost to coolant and exhaust gases;

Performance curves.


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Assignment no 19:

How is BHP of an engine measured. Explain

one method with diagram.


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Air pollution from I.C. Engine and Its remedies:

Pollutants from S.I. and C.I. Engines,

Methods of emission control.


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Assignment no 20:

Explain catalytic converter method for

controlling pollution in vehicles.


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Alternative fuels for I.C. Engines.


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Assignment no 21:

What are the alternative fuels for IC engines

for controlling pollution.


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Rotary Compressors:

Root and vane blowers;

Static and total head values;


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Assignment no 23:

Write a note on root and vane blowers.


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Centrifugal compressors:

Velocity diagrams,

Slip factor,

Ratio of compression,


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Assignment no 24:

.Draw velocity diagrams for centrifugal compressor.

. What is slip factor?


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Pressure coefficient,

Pre-whirl

Axial flow compressor:

Degree of reaction,

Polytrophic efficiency,


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C i & G


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surging,

choking and stalling,

performance characteristics.

IC i & GT


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Assignment no 26:

. Write short notes on surging, choking and stalling

in an axial flow compressor.

IC i & GT


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Gas Turbines:

Brayton cycle;

Components of a gas turbine plant;

IC i & GT


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Assignment no 27:

. Explain Brayton cycle.

IC i & GT


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Open and closed types of gas turbine plants;

Optimum pressure ratio;

IC i & GT


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Assignment no 28:

. What are open and close type gas turbines?

IC i & GT


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Improvements of the basic gas turbine cycle;

multi stage compression with inter-cooling.

IC i & GT


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Assignment no 29:

.What is multi stage compression with inter cooling?

IC engines & GT


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Multi stage expansion with reheating betweenstages.

Exhaust gas heat exchanger.

Applications of gas turbines.

IC engines & GT


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Assignment no 30:

.What are applications of gas turbines?

internal combustion engine presentation

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