Kia Optima: Operation Principle - CVVT (Continuously Variable Valve Timing) System. Description 
		and Operation - Exhaust Emission Control 
		System - Emission Control System - Kia Optima TF 2011-2021 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:

Rear Disc Brake Repair procedures
Removal 1. Remove the rear wheel & tire. Tightening torque: 88.3 ~107.9 N.m(9.0 ~11.0 kgf.m, 65.1 ~79.6 lb-ft) 2. Remove the rear upper arm (A). 3. Loosen the hose eyebolt (C) a ...

The Other Fuses And Relays Component. Repair procedures
Inspection Power Relay Test (Type B)Check for continuity between the terminals. A : Two turn unlock relay 1. There should be continuity between the No.30 and No.87 terminals when power ...

Power Door Lock Switch Repair procedures
Inspection Driver Door Lock Switch Inspection 1. Disconnect the negative (-) battery terminal. 2. Remove the front door trim panel. (Refer to the BD group - "Front door") 3. Disconnect t ...

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