AUTOMOBILE ENGINEERING ME-4203
L-2
D r. A b u H a m j a
Assistant Professor
A h s a n u l l a h U n i v e r s i t y o f S c i e n c e a n d Te c h n o l o g y
What did you learn last class?
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Content
• Definition of Automobile Engineering
• Classification of Automobile
• Basic Components of Automobile
• Basic Layout of Automobile
Definition of Automobile Engineering
• Definition:
Automobile engineering is a branch of mechanical engineering which deals with various
types of automobiles, mechanism of its power & transmission systems, guiding &
controlling system, frame, chassis and body.
It also deals with the various types of automobiles, their and its applications.
• Automobile:
It is a vehicle driven by an internal combustion engine and it is used for transportation of
passengers and goods on the ground.
Examples : Car, jeep, bus, truck, scooter, motorcycle etc.
Classification of Automobile
• Automobiles or vehicles can be classified as follows:
On Basis of Load
o Heavy transport vehicle (HTV) or heavy motor vehicle (HMV), e.g. trucks, buses,
etc.
o Light transport vehicle (LTV), e.g. pickup, station wagon, etc.
o Light motor vehicle (LMV), e.g. cars, jeeps, etc.
On Basis of Number of Wheels
o Two wheeler vehicle: Scooter, motorcycle etc.
o Three wheeler vehicle: Auto rickshaw, three wheel scooter etc.
o Four wheeler vehicle: Car, jeep, trucks, buses, etc.
o Six wheeler vehicle: Trucks with two gear axles each having four wheels.
o Eighteen wheeler truck.
Classification of Automobile (Continue)
On Basis of Fuel Used
o Petrol vehicle, e.g. motorcycle, scooter, cars, etc.
o Diesel vehicle, e.g. trucks, buses, etc.
o Electric vehicle which use battery to drive.
o Steam vehicle, e.g. an engine which uses steam engine. These engines are now obsolete.
o Gas vehicle, e.g. LPG and CNG vehicles, where LPG is liquefied petroleum gas and CNG is
compressed natural gas.
On Basis of Body Structure or Shape
o Sedan Station wagon
o Convertible passenger car
o Jeep
o Van
o Special purpose vehicle: Ambulance, milk van etc.
Basic Components of Automobile
• Automobile can be considered to consist of five basic components :
o Engine or Power Plant : It is source of power.
o Frame and Chassis : It supports the engine, wheels, body, braking system, steering, etc.
o Transmission system: which transmits power from the engine to the car wheels. It
consists of clutch, transmission, shaft, axles and differential.
o Body: which is fitted on chassis.
o Automobile controlling system: Steering, brakes etc.
o Accessories: for safety and comfort including light, air conditioner, heater, stereo and
wiper etc.
• Note:
o To study the automobile engineering, at first we need to know the some basic of operating
and construction I.C engine as well as some basic terms of the automobile.
o So we need have a plan of study.
Plan of Study of Automobile Engineering
Automotive Engines Electrical and electronic system
o Construction, basic operation and o Battery
classification o Starting system
o Engine fuel system o Charging system
o Lubricating system o Lights, other electrical accessories.
o Cooling system Automotive emission control systems.
Automotive Power Train Accessories for safety and comfort.
Automotive Chassis Automotive performance.
o Suspension system
o Steering system
o Brakes
Basic Layout of Automobile
Basic Layout of Automobile
Universal joint
Gear Box
Attribution: By Van helsing - Own work, CC BY 2.5, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1423773
https://commons.wikimedia.org/w/index.php?curid=1822715
Basic Layout of Automobile
Basic Layout of Automobile
Basic Layout of Automobile
Thanks for your attention
Questions?
Abu Hamja (abuhamja.mpe@aust.edu)
