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Home >> Kia >> 2020 >> Cadenza Technology >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Auxiliary Emission Control Systems >> Exhaust Emission Control System >> CVVT (Continuous Variable Valve Timing) System >> Description And Operation >> Operation Principle >> Notes

Operation Principle: Notes

The CVVT has the mechanism rotating the rotor vane with hydraulic force generated by the engine oil supplied to the advance or retard chamber in accordance with the CVVT oil control valve control.

Information 

CAUTION:
  • The variable force solenoid (VFS) changes its force depending on the PWM duty to control the stroke of the OCV.
  • It also controls the lock, unlock, advanced, retarded, and holding functions.
  1. Intake CVVT
    G13403331Courtesy of KIA MOTORS AMERICA, INC.
  2. Exhaust CVVT
    G13403332Courtesy of KIA MOTORS AMERICA, INC.