Hyundai Santa Fe: CVVT Oil Control Valve (OCV). Description and Operation - Engine Control System - Engine Control/Fuel System - Hyundai Santa Fe DM 2013-2019 Service ManualHyundai 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 intake control
    This is used to select outside (fresh) air position or recirculated air position. To change the air intake control position, push the control button. Recirculated air position The indicator lig ...

    Repair procedures
    Removal Х Use fender covers to avoid damaging painted surfaces. ...

    1. Crankcase emission control system
    The positive crankcase ventilation system is employed to prevent air pollution caused by blow-by gases being emitted from the crankcase. This system supplies fresh filtered air to the crankcase th ...