CHHATTISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY, BHILAI (C G)
Semester: V th Branch: Mechanical Engg.
Subject:Internal Combustion Engines
UNIT – I
Introduction of Internal and external combustion engine and their comparison, four stroke cycle S.I. and C.I. engine,
two stroke engine, comparison of four stroke and two stroke engines, comparison of S.I. and C.I. engine,
classification of I.C. Engine, Valve timing diagram for S.I. and C.I. engines, effect of valve timing and engine speed
on volumetric efficiency, reasons for ignition and injection advance, dual fuel, multi-fuel and Wankel Rotary engine.
Reasons for deviation of actual cycle from air standard cycles, variation specific heats and cycle analysis, fuel air
cycles and their analysis, actual cycles and their analysis.
Purpose and Thermodynamic cycle of supercharging.
Basic requirement of I.C. Engine fuels, requirement of an ideal gasoline, structure of petroleum, effect of fuel
structure on combustion, volatility of liquid fuels, effect of volatility on engine performance for starting, vapour lock,
acceleration, percolation, carburetor icing, and crank case dilution.
Determination of stoichiometric air fuel ratio, fuel-air and exhaust gas analysis for a given combustion process.
Combustion in S.I. and C.I. engines, Detonation,
Pre-ignition , Knocking, Antiknock rating of fuels
Octane number, critical compression ratio, HUCR, performance number, Cetane number. Dopes
Properties of air-petrol mixtures, mixture requirement, simple carburetor, limitation of simple carburetor, modern
carburetor, Main metering system, Idling system, Economizer system, acceleration pump and cold starting system.
Nozzle lip, venturi depression, calculation of fuel jet and venturi throat dia for given air fuel ratio.
Petrol Injection system, electronic fuel injection, advantage and disadvantage of petrol injection.
UNIT – IV
Battery and magneto ignition system and their comparative study, spark plug heat range, electronic ignition system,
firing order, Ignition timing, centrifugal and vacuum ignition advance.
Requirement, type , fuel pump, type of fuel injector, type of nozzle, atomization, spray penetration and spray
direction, multiple point fuel injection system.
Cooling requirement, air cooling, liquid cooling, type of liquid cooling system, advantage and disadvantage of air
cooling and water cooling system, Antifreeze mixture.
Function of lubricating system, properties of lubricating oil, wet sump, dry sump and mist lubrication system.
Governing of I C Engine
Necessity of governing, various methods of governing.
UNIT – V
Testing and Performance
Performance parameters, measurements of brake power, indicated power, friction power, fuel and air consumption,
exhaust gas calorimeter, calculation of various performance parameter, heat balance sheet.
Performance current for S.I. and C.I. Engine with load and speed.
Emission and Pollution
SI Engine and CI Engine emissions and its control and comparison. Effect of pollution on Human health and bio
1. A Course in Internal Combustion Engines – M.L. Mathur & R.P. Sharma – Dhanpat Rai & Sons
2. Internal Combustion Engine – V. Ganeshan – TMH
1. A Course in Internal Combustion Engine – V.M. Domkundwar – Dhanpat Rai & Sons
2. Internal Combustion Engine – R. Yadav – Central Publishing House, Allahabad
3. Fundamental of Internal Combustion Engine – Paul W. Gill, James H. Smith, Eugene J. Ziurys – Oxford and
IBH Publishing Company
4. Internal Combustion Engines – R.K.Rajput – Laxmi Publications