Kia Sedona: CVVT Oil Control Valve (OCV) Description and Operation - Engine Control System - Engine Control / Fuel System - Kia Sedona YP Service ManualKia Sedona: CVVT Oil Control Valve (OCV) Description and Operation

Third generation YP (2014-2020) / Kia Sedona YP Service Manual / Engine Control / Fuel System / Engine Control System / CVVT Oil Control Valve (OCV) Description and Operation

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 speed and load.
By controlling CVVT, the valve over-lap or under-lap occurs, which makes better fuel economy, reduces exhaust gases (NOx, HC) and improves engine performance through reduction of pumping loss, internal EGR effect, improvement of combustion stability, improvement of volumetric efficiency, and increase of expansion work.
This system consists of:
- the CVVT Oil Control Valve (OCV) which supplies the engine oil to the cam phaser or runs out the engine oil from the cam phaser in accordance with the ECM PWM (Pulse With Modulation) control signal,
- the CVVT Oil Temperature Sensor (OTS) which measures the engine oil temperature,
- and the Cam Phaser which varies the cam phase by using the hydraulic force of the engine oil.
The engine oil released from the CVVT oil control valve varies the cam phase in the direction (Intake Advance/Exhaust Retard) or opposite direction (Intake Retard/Exhaust Advance) of the engine rotation by rotating the rotor connected with the camshaft inside the cam phaser.

CVVT Oil Control Valve (OCV) Specifications
Specification ItemSpecificationCoil Resistance (Ω)9.4 ~ 10.4 [20°C(68°F)] ...

CVVT Oil Control Valve (OCV) Schematic Diagrams
Circuit Diagram ...

Other Information:

From the rear seat
1. Set the rear climate control selection (REAR ON) button in the front climate control panel to the ON position. 2. Set the rear climate control selection (REAR LOCK) button in the front climate ...

Detecting sensor
The sensors are located inside of the rear bumper. Always keep the rear bumper clean for the system to work properly. ...

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