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:

    Electric power steering (EPS)
    The power steering uses a motor to assist you in steering the vehicle. If the engine is off or if the power steering system becomes inoperative, the vehicle may still be steered, but it will requi ...

    Automatic-dimming function
    Your mirror will automatically dim upon detecting glare from the vehicles traveling behind you. The autodimming function can be controlled by the Dimming ON/OFF Button: 1. Pressing and hold the but ...

    If engine stalls while driving
    1. Reduce your speed gradually, keeping a straight line. Move cautiously off the road to a safe place. 2. Turn on your emergency flashers. 3. Try to start the engine again. If your vehicle will no ...