Description |
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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, |
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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 |
Components and Components Location
Components Location
1. Overdrive clutch (OD/C)2. One way clutch (OWC)3. Low & Reverse brake (LR/B)4. Underdrive brake (UD/B)5. 26 brake(26/B)6. 35R clutch (35R/C)7. Damper clutch (D/C)
...
Opening the hood
1.Pull the release lever to unlatch the hood. The hood should pop open slightly.
Open the hood after turning off the engine on a flat surface, shifting the shift
lever to the P(Park) position for ...