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 the PCSV terminals 1 and 2. 4. Check that the resistance is within the specification. Specification: ...

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

See also:

Standard programming
To train most devices, follow these instructions: 1. For first-time programming, press and hold the two outside buttons, HomeLink® Channel 1 and Channel 3 Buttons, until the indicator light begins to ...

Rear Center Seat Belt Retractor. Repair procedures
Replacement • When installing the belt, make sure not to damage the retractor. 1. Remove the second row seat back cover [LH]. 2. Loosen the rear center seat belt lower anchor mounting bolt (A). Tightening ...

Passive Occupant Detection System (PODS-F). Description and Operation
Description In order to make normal activation of airbag system, SRSCM detects DTC(s) for the Passive occupant detection system (PODS-F). If the seat is occupied, PODS-F detects passenger presences status ...