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1.power plant and locations
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- 2. SYLLABUS MODULE-I MODULE-III MODULE-IVMODULE-II •POWER PLANT • CHASSIS • FRAMES • FRONT AXLES • STEERING SYSTEMS • SUSPENSION • DRIVE LINE • BRAKES • WHEELS • TYRES
- 3. AUTOMOBILE ENGINEERING • Automobileengineering is a branch of engineering which deals with everything about automobiles and practices to propel them. • Automobile 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, etc.
- 4. MAIN COMPONENTS OFTHE AUTOMOBILE The automobile can be considered to consist of five basic components (a) The Engine or Power Plant : It is source of power. (b) The Frame and Chassis : It supports the engine, wheels, body, braking system, steering, etc. (c) The transmission: which transmits power from the engine to the car wheels. It consists of clutch, transmission, shaft, axles and differential. (d) The body and Controls. (e) Accessories: including light, air conditioner/hearer, stereo, wiper, etc.
- 5. Layout of completesystem of Automobile
- 6. Layout of thetransmission system
- 7. Engine or PowerPlant • The engine is the power plant of the vehicle. • In general, internal combustion engine with petrol or diesel fuel is used to run a vehicle. • An engine may be either a two-stroke engine or a four-stroke engine. • An engine consists of a cylinder, piston, valves, valve operating mechanism, carburettor (or MPFI in modern cars), fan, fuel feed pump and oil pump, etc. • Besides this, an engine requires ignition system for burning fuel in the engine cylinder.
- 8. THEPOWERPLANT • Gas turbinesalso have been used in vehicles • Now, electric batteries for propelling the vehicle
- 9. ARRANGEMENT OF POWERPLANT
- 10. 1.Front engine FWD •The power is transmitted to front axles, from the front engine (Front Wheel Drive) • Afewadvantagesare: i. Thepropellershaftiseliminated.Thispermitslowchassisheight ii. Thepullsthecarthanpushingit,avoidingskiddingtendency. iii. Betterroadadhesion. • Afewdisadvantagesare: i. Thewholearrangementoverfrontwheelsiscomplicated. ii. Constantvelocityjointshavetobeusedinsteadofuniversaljoints iii. Decreaseoftractiveforceswhenthevehicleisupthegrade.
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- 12. 2.Front engine RWD •Thepoweristransmittedtorearaxles,fromthefrontengine(rearWheelDrive) • Afewadvantagesare: i. Thewholearrangementoverfrontwheelsiseasy. ii. universaljointshavetobeusedinsteadofConstantvelocityjoints iii. increaseoftractiveforceswhenthevehicleisupthegrade. • Afewdisadvantagesare: i. Thepropellershaftisengaged.Thispermitshighchassisheight ii. Transmissionlossishigh.
- 14. 3.Rear engine RWD •Theengineisplacedattherearandtherearwheelsarethedrivenwheels • Advantagesare: i. Bettertractiveforcesupthegrade ii. Frontaxleconstructionissimplified iii. Absenceofpropellershaftallowsdecreaseinchassisheight • Thedisadvantagesare: i. Maylosebalanceathighspeeds. ii. Complicatedlinkageisrequiredbetweentheengine,clutchandgearbox. iii. Rearpositionofengine,coolingeffectisreduced.
- 16. 4.Front engine fourwheel drive • Vehicleswhichoperateonroughroadsandunexpectedroadprofiles,allthefour wheelsarethedrivingwheels. • Ithasgotanextratransferbox,whichdividesthetorquebetweenfrontandrear wheels. • Alsothereisaprovisionfordisengagingthefrontwheelswhennotrequired.
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- 19. ADVANTAGE OF 4WD •Themainadvantageofthe4WDisthatwhenanywheelsfallintoaditch orahole,theycanbedrivenoutwiththehelpofotherwheelsorpower beingdeliveredtothesamewheel • Butthisadvantagecanonlyatthecostofextrafuelconsumption.
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- 21. CHASSIS • Chassis isa French term which is now denotes the whole vehicle except body. • “Chassis consists of engine, power train, brakes, steering system and wheels mounted on a frame”.
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