Hyundai Elantra: Engine Control System / CVVT Oil Control Valve (OCV) Description and Operation

Hyundai Elantra AD (2016-2020) 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 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 regulates the engine oil to and from the cam phaser in accordance with the ECM PWM (Pulse With Modulation) control signal,

-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.

[Bank 1 / Intake] #1

[Bank 1 / Intake] #2

[Bank 1 / Exhaust]

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 speci ...

CVVT Oil Control Valve (OCV) Specifications

Specification [Bank 1 / Intake] #1 , [Bank 1 / Exhaust] ItemSpecificationCoil Resistance (?)9.4 ~ 10.4 [20°C(68°F)] [Bank 1 / Intake] #2 ItemSpecificationCoil Resistance (?)10.8 ~ 12.8 [20° ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Repair procedures
Inspection Inspecion Item • Battery efficiency inspection • Battery voltage inspection • Charging voltage insptection • General inspection • Terminal tightening state inspection • Engine/ transaxle ground state inspection • Wiring hareness g ...

Hyundai Elantra AD (2016-2020) Owners Manual: Engine Oil
Checking the Engine Oil Level 1. Follow all of the oil manufacturer’s precautions. 2. Be sure the vehicle is on the level ground in P (Park) with the parking brake set. If possible, block the wheels. 3. Turn the engine on and allow the engine to reach normal operating temperature. 4. Turn th ...