Description |
– |
the CVVT Oil Control Valve (OCV) which supplies the engine oil to the
cam phaser or runs out 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.
|
Operation Principle |
[CVVT System Mode] |
(1) Low Speed / Low Load |
(2) Partial Load |
|
|
(3) Low Speed / High Load |
(4) High Speed / High Load |
|
|
Driving Condition |
Exhaust Valve |
Intake Valve |
||
Valve Timing |
Effect |
Valve Timing |
Effect |
|
(1) Low Speed /Low Load |
Completely Advance |
* Valve Under-lap * Improvement of combustion stability |
Completely Retard |
* Valve Under-lap * Improvement of combustion stability |
(2) Part Load |
Retard |
* Increase of expansion work * Reduction of pumping loss * Reduction of HC |
Retard |
* Reduction of pumping loss |
(3) Low Speed /High Load |
Retard |
* Increase of expansion work |
Advance |
* Prevention of intake back flow (Improvement of volumetric efficiency) |
(4) High Speed /High Load |
Advance |
* Reduction of pumping loss |
Retard |
* Improvement of volumetric efficiency |
Hyundai Kona (OS) 2018-2024 Service Manual: Troubleshooting
Troubleshooting
Symptom
Suspect area
Engine will not start or stuggle to start
Vapor hose damaged or disconnected
Engine stuggle to start
Malfunction of the Purge Control Solenoid Valve
...
Hyundai Kona (OS) 2018-2024 Service Manual: Components and components location
Components
1. Rear seat belt buckle [LH]
2. Rear seat belt buckle [RH]
3. Center seat belt anchor connector
4. Rear center seat belt retractor
5. Rear seat belt retractor
...