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
Feeds blow by gases to the exhaust manifold
Mixes fuel with air
Returns blow by gases from the crankcase to the intake system

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Automobile Engineering in ME
The function of anti-lock brake system (ABS) is that is

Minimizes the brake fade
Maintains directional control during braking by preventing the wheels from locking
Prevents nose dives during braking and thereby postpones locking of the wheels
Reduces the stopping distance

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