Automobile Engineering in ME
The condition that results in large quantities of CO emission is

High temperature combustion
Low temperature combustion
Insufficient fuel during combustion
Insufficient air during combustion

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

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

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