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, |
– |
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 |
Panoramaroof Motor: Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the roof trim.
(Refer to the BD group - "Roof trim")
3.
Remove the panoramaroof motor (A) after disconnecting the co ...
Tight corner brake effect
Tight corner brake effect is a unique characteristic of four-wheel drive vehicles
caused by the difference in tire rotation at the four wheels and the zero-degree
alignment of the front wheels and ...