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) Part 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 |
Kia Cee'd JD Service Manual: Yaw-rate and Lateral G Sensor Description and operation
Description
When the vehicle is turning with respect to a vertical axis the yaw rate sensor
detects the yaw rate electronically by the vibration change of plate fork inside
the yaw rate sensor.
If yaw velocity reaches the specific velocity after it detects the vehicle' ...
Kia Cee'd JD Service Manual: ICM (Integrated Circuit Module) Relay Box Repair procedures
Inspection
1.
The ICM (Integrated Circuit Module) can be diagnosed by using the GDS
more quickly.
The BCM communicates with the GDS and then reads the relay value and
drives the actuator.
2.
To diagnose the ICM relay ...