INTRODUCTION OF AUTOMOTIVE ENGINE
Heat engine defined as ait is a device which transforms the chemical energy of a fuel into thermal energy and uses
this energy to produce mechanical work. It is classified into two types-
(a) External combustion engine
(b) Internal combustion engine
1. D...
Subject Code : OAT551 (Open Elective)
Subject Name : Automotive System
Year/Semester : III/V
Author - Biography
Prof.S.Sathishkumar.BE (Mechanical Engineering)., ME (Engineering Design)., MBA (Operations
Management).,MISTE
Assistant Professor, Department of Mechanical Engineering
Vel Tech (Owned By RS Trust) Engineering College, Avadi, Chennai-62
Tounderstandtheconstructionandworkingprincipleofvariouspartsofanautomobile.
To have the practice for assembling and dismantling of engine parts and transmission
system
UNIT I AUTOMOTIVE ENGINEAUXILIARYSYSTEMS 9
Automotive engines‐ External combustion engines –Internal combustion engines ‐
classification of engines‐ SI Engines‐ CI Engines‐ two stroke engines ‐four stroke engines‐ construction
and working principles ‐ IC engine components‐ functions and materials‐valve timing –port timing
diagram‐ Injection system ‐Unit injector system‐ Rotary distributor type-Electronically controlled injection
system for SI engines‐CI engines‐Ignition system ‐ Electronic ignition system ‐Transistorized ignition
system, capacitive discharge ignitionsystem.
UNIT II VEHICLE FRAMES ANDSTEERINGSYSTEM 9
Vehicle construction and different Chassis layouts –classifications of chassis‐ types of framesframeless
chassis construction –articulated vehicles‐ vehicle body ‐ Vehicle aerodynamics‐various resistances and its
effects ‐ steering system –conventional – sophisticated vehicle‐ and types of steering gear box‐Power
Steering‐ Steering geometry‐condition for true rolling motion‐Ackermann‟s‐ Devi‟s steering system ‐
types of stub axle – Types of rear axles.
UNIT III TRANSMISSIONSYSTEM 9
Clutch‐types and construction, gear boxes‐ manual and automatic, gear shift mechanisms, Over drive,
transfer box, fluid flywheel, torque converter, propeller shaft, slip joints, universal joints –‐ Hotchkiss
Drive and Torque Tube Drive‐ rear axle‐ Differential‐wheels and tyres.
UNIT IV SUSPENSION ANDBRAKESSYSTEM 9
Suspension Systems‐ conventional Suspension Systems ‐independent Suspension Systems –leaf spring –
coil spring –taper‐lite ‐ eligo,s spring Types of brakes ‐Pneumatic and Hydraulic Braking Systems,
Antilock Braking System (ABS), electronic brake force distribution (EBD) and Traction Control. Derive
the equation of Forces acting while applying a brakes on plain surface ‐ inclined road‐gradient.
UNIT V ALTERNATIVE ENERGY SOURCES 9
Use of Natural Gas, Liquefied Petroleum Gas, Bio‐diesel, Bio‐ethanol, Gasohol and Hydrogen in
Automobiles‐ Engine modifications required –Performance, Combustion and Emission Characteristics of
SI and CI engines with these alternate fuels ‐ Electric and Hybrid Vehicles, Fuel Cell. Turbo chargers ‐
Engine emission control by three way catalytic converter system.
Note: Practical Training in dismantling and assembling of Engine parts and Transmission
Systems should be given to the students.
TOTAL: 45 PERIODS
OUTCOMES:
Upon completion of this course, the students will be able to identify the different components in
automobile engineering.
Have clear understanding on different auxiliary and transmission systems usual.
TEXT BOOKS:
1. GanesanV.“InternalCombustionEngines”,ThirdEdition,TataMcGraw‐Hill,2007.
2. Jain K.K. and Asthana .R.B, “Automobile Engineering” Tata McGraw Hill Publishers, New
Delhi,2002.&Kirpal Singh, “Automobile Engineering”, Vol 1 & 2,7thStandard Publishers-, New
Delhi,1997
www.veltechengg.com
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, www.vidyarthiplus.com Prof.S.Sathishkumar
GRAPHICAL REPRESENTATION OF AUTOMOTIVE SYSTEM
www.veltechengg.com
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