Internal Combustion Engines

ME654

Lectures

:

3

Year

: III

Tutorial

:

1

Part

: II

Practical

: 3/2

Course Objectives:

To make student able to understand construction and operation of IC engine, fuels and combustion of fuels in SI and CI engine performance test procedure and formation of exhaust emissions and their controlling measures.

1.Overview of Thermodynamics of Fuel-air Cycles and Real Cycles (5 hours)

1.1Otto cycle, Diesel cycle, Atkinson cycle, Stirling cycle, Brayton cycle.

1.2Assumptions in fuel air cycle analysis

1.3Composition of cylinder gases

2. Engine Construction and operation

(4 hours)

2.1Construction and working principle of SI, CI engines and gas turbines

2.2Major engine components

2.3Four stroke and two stroke engines

3. Engine Fuels

(6 hours)

3.1Basic requirements of engine fuels:

3.2Chemical structure of petroleum

3.3Heat value of fuels.

3.4Rating of SI Engine fuels,

3.5Rating of CI engine fuels

3.6Combustion equation for hydrocarbon fuels

3.7Properties and ratings of petrol and diesel fuels

3.8Fuel supply systems of SI and CI engines

3.9Non-conventional fuels for IC engines; LPG, CNG, Methanol, Ethanol, Non-edible vegetable oils, Hydrogen.

4. Carburetor & Fuel Injection Systems

(6 hours)

4.1Construction and working of carburettor

4.2Inlet and exhaust valve timings

4.3Fuel feed and fuel injection pumps

4.4Petrol injection

4.5Electronic Fuel Injection systems (EFI)

4.6 Multi-point fuel injection system (MPFI)

5. Combustion in SI and CI Engines

(6 hours)

5.1Ignition systems

5.2Stages of combustion in engines

5.3Flame propagation and factors affecting it

5.4Knocking a nd pre-ignition

5.5Factors affecting knocking and Control of knocking

5.6Combustion chamber requirements

5.7Turbo charging and super charging

5.8Engine emissions

5.9Engine emissions and emission standards

6 Engine lubrication systems

(4 hours)

6.1Engine lubrication systems

6.2Hydrodynamic theory of lubrication

6.3Properties of lubricants

6.4Types of lubricants and additives

6.5Grading of lubricating oils

7 Engine cooling

(6 hours)

7.1Air and water cooling systems

7.2Working principles of air and water cooling systems

7.3Variation of gas temperatures

7.4Components of water cooling system

8 Engine Performance and Testing of Engines

(8 hours)

8.1Performance parameters

8.2Engine power, BHP, Fuel consumption, Air consumption

8.3Engine heat balance sheet

8.4Mechanical efficiency

8.5Engine efficiencies

8.6Testing of engines and related numerical problems

Practical:

1.Engine dismantling and engine assembly: SI and CI engines.

2.Identification of engine components and checking them for defects.

3.Performance testing of SI/CI engine

4.Tailpipe emission testing of given engine

References:

1.Heywood, J. B, “Internal Combustion Engine Fundamentals”, McGraw Hill Publishing Co., New York.

2.Sharma, S. P, Chandramohan, “Fuels and Combustion”, Tata McGraw Hill Publishing Co.

3.Mathur and Sharma, “A course on Internal combustion Engines”, Dhanpat Rai & Sons.

4.Pulkrabek, W. W., “Engineering Fundamentals of the Internal Combustion Engine”, Prentice-Hall of India Private Limited.

5.Prof. P.L. Ballaney, “Internal Combustion Engines”, Khanna Publications, Delhi, India.

6.R.K. Mohanty, “A Text Book of Internal Combustion Engines”, Standard Book House, Delhi, India.

Evaluation Scheme:

There will be questions covering all the chapters of the syllabus. The evaluation scheme for the questions will be as indicated in the table below:

Unit

Chapter

Topics

Marks

1

1 & 2

all

16

2

3

all

16

4

4.1 to 4.4

3

4

4.5 & 4.6

16

5

all

4

6 & 7

all

16

5

8

all

16

Total

80

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Raju Dawadi
Raju Dawadi
Raju is currently actively involved in DevOps world and is focused on Container based architecture & CI/CD automation along with Linux administration. Want to discuss with him on any cool topics? Feel free to connect on twitter, linkedIn, facebook.

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