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

ANUSANDHAN '16

ABSTRACTThe 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.

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.

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

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.

PARTS OF IC- ENGINE:

Internal combustion Engine Components:

BlockCylinder Hard grade cast-iron.

(Casting)

Head

Crank Shaft

Cast-iron or Aluminium(Casting,Forging)

Carbon Steel Alloy(Forging)

Connecting Rod

Piston Ring

Alloy steel(Forging)

Cast Iron(Casting)

Push Rod

Crank case

Cam Shaft Cast-iron (Casting)

I.C. Engine components apart from Engine shown in the figure:

Flywheel

Fuel Injector

Steel or Cast-iron (Casting)

Fuel Pump

Carburettor

Spark plug

Cast-iron, Zinc& Aluminium

Engine Terminology :Top Dead Center (TDC)

Bottom Dead Center (BDC)

Bore Stroke (TDC-BDC)

Swept Volume (Vs)Clearance Volume (Vc)Compression Ratio (Vs+Vc)/Vc

ENGINE TERMINOLOGY

FOUR STROKE PETROL ENGINE (SI)Suction Stroke (Fuel+Air)

Compression Stroke Expansion Stroke (Power Stroke)

Exhaust Stroke (Flue Gases)

FIGURE: SUCTION STROKE

FIGURE: COMPRESSION STROKE

FIGURE: COMBUSTION FOLLOWED BY EXPANSION STROKE.

FIGURE : EXHAUST STROKE

OTTO CYCLE

COMPRESSION IGNITION ENGINE :

Suction Stroke (Only Air)

Compression Stroke (Fuel Injected)

Expansion Stroke Exhaust Stroke (Flue Gases)

FIGURE:SUCTION STROKE FIGURE: COMPRESSION STROKE

FIGURE: EXPANSION STROKE

FIGURE: EXHAUST STROKE

DIESEL CYCLE

We are grateful to “Mechanical Department” for his valuable

guidance and assessment.

“Thank you”