Kia Forte: CVVT (Continuously Variable Valve Timing) System Operation Principle

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.

CVVT (Continuously Variable Valve Timing) System 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 ...

[CVVT System Mode]

(1) Low Speed / Low Load (2) Part Load (3) Low Speed / High Load (4) High Speed / High Load ...

See also:

Output Speed Sensor Signal Waveform
Fig 1) Input/Output speed sensor at low speed Fig 2) Input/Output speed sensor at high speed ...

Description
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Inspection
1. Inspect diaphragm spring wear which is in contact with a clutch release bearing. 2. Check the clutch cover and disc surface for wear or ...