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Home >> Genesis >> 2021 >> G80 2.5T Advanced, AWD >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Auxiliary Emission Control Systems >> Exhaust Emission Control System - 2.5L >> CVVT (Continuously Variable Valve Timing) System >> Description And Operation >> Operation Principle >> CVVT System Mode
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CVVT System Mode

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  1. Low Speed/Low Load
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  2. Part Load
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  3. Low Speed/High Load
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  4. High Speed/High Load
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    Driving Condition Exhaust Valve Intake Valve
    Valve Timing Effect Valve Timing Effect
    (1) Low Speed/Low Load Completely Advance * Valve Under-lap
    * Improvement of combustion stability    		 Middle * Valve Under-lap
    * Improvement of combustion stability
    (2) Part Load Retard * Reduction of HC Retard * Reduction of pumping loss
    (3) Low Speed/High Load Completely Advance * Reduction of pumping loss Advance * Prevention of intake back flow (Improvement of volumetric efficiency)
    (4) High Speed/High Load Completely Advance * Reduction of pumping loss Advance * Prevention of intake back flow (Improvement of volumetric efficiency)
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