Hyundai Santa Fe: CVVT Oil Control Valve (OCV). Description and Operation - Engine Control System - Engine Control/Fuel SystemHyundai Santa Fe: 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 and 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 consist of
-the CVVT Oil Control Valve (OCV) which supplies the engine oil to the cam phaser or cuts 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 getting out of 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.


    Purge Control Solenoid Valve (PCSV). Repair procedures
    Inspection 1. Turn the ignition switch OFF. 2. Disconnect the PCSV connector. 3. Measure resistance between th ...

    CVVT Oil Control Valve (OCV). Specifications
    Specification Item Specification Coil Resistance (Ω) 6.9 ~ 7.9 [20°C(68°F)] ...

    See also:

    Air conditioning
    Push the A/C button to turn the air conditioning system on (indicator light will illuminate). Push the button again to turn the air conditioning system off. ...

    35R Clutch Control Solenoid Valve(35R/C_VFS). Repair procedures
    Inspection 1. Turn ignition switch OFF. 2. Remove the air duct. 3. Disconnect the solenoid valve co ...

    Valve Body. Repair procedures
    Removal 1. Remove the air duct. 2. Remove the battery and the battery tray. 3. Remove the ...