by vadiyar

1. GEETANJALI INSTITUTE OF TECHNICAL STUDIES
A Presentation
on
Demonstration of INTERNAL
COMBUSTION ENGINE
Guided by :-
Mechanical Department
Approved by :-
Prof. Vishnu Agarwal
HOD,Mechanical
Team :- Kapil Vadiyar
Jayesh Sharma
DEPARTMENT OF MECHANICAL ENGINEERING

2. ABSTRACT
The purpose of this Presentation is to make familiar
with “ INTERNAL COMBUSTION ENGINE”. The
whole report is prepared after deep studying of
Automobile IC-ENGINE. Since many books are
available regarding to this but this Presentation is
very helpful for our Knowledge purpose.

3. INTRODUCTION:
=
•Heat engine : It can be defined as any
engine that converts thermal energy to
mechanical work output. Examples of heat
engines include: steam engine, diesel
engine, and gasoline (petrol) engine.

4. TYPES OF COMBUSTION ENGINE
• In an Internal combustion engine, combustion takes place
within working fluid of the engine, thus fluid gets contaminated
with combustion products.
 Example : Petrol engine
• In an External combustion engine, working fluid gets energy
using boilers by burning fossil fuels or any other fuel, thus the
working fluid does not come in contact with combustion
products.
 Example: Steam engine

5. IC-ENGINES MAY BE CLASSIFIED AS :
Spark Ignition engines(SI).
Compression Ignition engines(CI).
Spark ignition and Compression Ignition
engine operate on either a four stroke cycle
or a two stroke cycle.

6. PARTS OF IC- ENGINE:

7. Internal combustion Engine Components:
Block
Cylinder

8. Head
Crank Shaft

9. Connecting Rod
Piston Ring

10. Push Rod
Crank case Cam Shaft

11. I.C. Engine components apart from Engine
shown in the figure:
Flywheel
Fuel Injector

12.  Fuel PumpCarburetor
 Spark plug

13. Engine Terminology :
 Top Dead Center (TDC)
 Bottom Dead Center (BDC)
 Bore
 Stroke
 Swept Volume
 Clearance Volume(CC)
 Compression Ratio

14. SI Engine Ideal Otto Cycle:

15. FOUR STROKE PETROL ENGINE (SI)
Suction Stroke
Compression Stroke
Expansion Stroke (Power Stroke)
Exhaust Stroke

16. FIGURE: SUCTION STROKE

17. FIGURE: COMPRESSION STROKE

18. FIGURE: COMBUSTION FOLLOWED BY EXPANSION STROKE.

19. FIGURE : EXHAUST STROKE

20. COMPRESSION IGNITION ENGINE :
Suction Stroke
Compression Stroke
Expansion Stroke
Exhaust Stroke

21. FIGURE:SUCTION STROKE FIGURE: COMPRESSION STROKE

22. FIGURE: EXPANSION STROKE FIGURE: EXHAUST STROKE

24. We are grateful to “Mechanical Department” for his
valuable guidance and assessment.
“Thank you”