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 |
Components 1. Camshaft bearing cap2. Camshaft front bearing cap3. Exhaust camshaft4. Intake camshaft5. Exhaust CVVT assembly6. Intake CVVT assembly7. Exhaust camshaft upper bearing8. Intake camshaft lower ...
Removal 1. Remove the cylinder head cover. 2. Set No.1 cylinder to TDC/compression. a. Turn the crankshaft pulley and align its groove with the timing mark "T" of the lower timing chain cover. b. Check ...
Special Service Tools Tool Name / NumberIllustrationDescription09581-11000Piston expanderUsed when spreading the front and rear brake piston.09580-3D100Air bleeding toolUsed when bleeding the air in the brake system.0k585-E8100Air bleeding toolUsed when bleeding the air in the brake system. Personal ...
Description The Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS). Instead of the traditional throttle cable, an Accelerator Position Sensor (APS) is used to receive driver input. The ECM uses the APS signal to calculate ...