The positive crankcase ventilation system is employed to prevent air pollution caused by blow-by gases being emitted from the crankcase. This system supplies fresh filtered air to the crankcase through the air intake hose. Inside the crankcase, the fresh air mixes with blow-by gases, which then pass through the PCV valve into the induction system.
Emission control system
2. Evaporative emission control
SystemKia Cee'd JD Service Manual: Description and operation
Description
Emissions Control System consists of three major systems.
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The Crankcase Emission Control System prevents blow-by gas from releasing
into the atmosphere. This system recycles gas back into the intake manifold
(Closed Crankcase Ventilatio ...
Kia Cee'd JD Service Manual: CVVT Oil Control Valve (OCV) Description and operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load.
By controlling CVVT, the valve over-lap or under-lap ...