The document is a presentation on internal combustion (IC) engines, detailing their classification, working principles, and advantages and disadvantages. It explains the different types of IC engines based on thermodynamic cycles, fuel type, strokes, and ignition methods. The presentation highlights the pros and cons of both petrol and diesel engines.

1. Submitted by:- Submitted to :-
Dileep Kumar Lecturer
Mr. Rahul Sharma
Uni. Roll No.:-
2232000030
IC ENGINE
POWERPOINT
PRESENTATION

2. University of Polytechnic
Department of Mechanical Engineering

3. ENGINE/ HEAT ENGINE
 An engine or heat engine is a device that
transforms the chemical energy of fuel into
thermal energy and utilizes this thermal
energy to perform useful work.

4. Heat Engine
Internal Combustion
Engine ( IC Engine)
External Combustion
Engine ( EC Engine)

5. INTERNAL COMBUSTION
ENGINE
An IC engine is a heat engine in which a
combustion of fuel (normally a fossil fuel
E.g.; Petrol, Diesel, LPG etc.) occurs with
in a combustion chamber.

6. CLASSIFICATION OF IC ENGINE
The internal combustion engines ( IC Engines ) are classified
depending upon
 Nature of Thermodynamic Cycle
i. Otto Cycle Engine
ii. Diesel Cycle Engine
 Type of Fuel
i. Petrol Engine
ii. Diesel Engine
iii. Gas engine

7. CLASSIFICATION OF IC ENGINE
The internal combustion engines ( IC Engines ) are classified
depending upon
 Number of Strokes
i. 2 Stroke Engine
ii. 4 Stroke Engine
 Types of Ignition
i. Spark Ignition (SI ) Engine
ii. Compression Ignition (CI ) Engine

8. COMPONENTS OF IC ENGINE

9. 4 STROKE PETROL ENGINE WORKING PRINCIPLE

10. 2 STROKE PETROL ENGINE WORKING PRINCIPLE

11. DIFFERENCE BETWEEN 4 & 2- STROKE ENGINE

12. ADVANTAGES & DISADVANTAGES
OF PETROL ENGINE
 Advantages
 Relatively clear exhaust
 Low maintenance cost
 Less engine vibration
 disadvantages
 Poor engine efficiency
 Lower compression ratio

13. ADVANTAGES & DISADVANTAGES OF
DIESEL ENGINE
Advantages
 Higher compression ratio
 Greater efficiency
 Low running cost
 disadvantages
 Increased NOx emissions due to higher combustion temperatures
 Increased UHC emissions due to incomplete combustion

14. THANK
YOU