Kia Optima: Operation Principle - CVVT (Continuously Variable Valve Timing) System. Description 
		and Operation - Exhaust Emission Control 
		System - Emission Control System - Kia Optima TF 2011-2019 Service ManualKia Optima: 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 System Mode]

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 sp ...

[CVVT System Mode]
(1) Low Speed / Low Load (2) Part Load (3) Low Speed / High Load (4) High Speed / High Load ...

See also:

Remove
1. Turn ignition OFF and disconnect the negative (-) battery cable. 2. Remove the crash pad lower panel. (Refer to Body Crash pad) 3. Disconnec ...

Circuit Diagram
...

Removal
1. Release the residual pressure in fuel line (Refer to Release Residual Pressure in Fuel Line in this group). 2. Remove the fuel pump service cover (A) in the ...

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