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Home >> Kia >> 2021 >> Rio LX >> Repair and Diagnosis >> Engine Mechanical >> Auxiliary Emission Control Systems >> Exhaust Emission Control System >> CVVT (Continuously 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.

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G13704591Courtesy of KIA MOTORS AMERICA, INC.