Automobile Engineering in ME
The function of positive crankcase ventilation (PCV) system is that it

Promotes combustion by creating a swirling movement in the air-fuel mixture
Returns blow by gases from the crankcase to the intake system
Mixes fuel with air
Feeds blow by gases to the exhaust manifold

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Automobile Engineering in ME
The main task of a battery in automobiles is to

Act as a reservoir or stabilizer of electricity
Supply a large amount of power to turn the starter motor when the engine is being started
Supply electricity to the alternator
Supply electricity to the vehicle's electrical system at all times while the engine is running

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