Kia Forte: [CVVT System Mode] - Cylinder Head Assembly - Engine Mechanical System - Kia Forte TD 2014-2018 Service ManualKia Forte: [CVVT System Mode]

Second generation YD (2014-2018) / Kia Forte TD 2014-2018 Service Manual / Engine Mechanical System / Cylinder Head Assembly / [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

CVVT & Camshaft Operation Principle
The CVVT has the mechanism rotating the rotor vane with hydraulic force generated by the engine oil supplied to the advance or retard chamber in accordance with the CVVT oil control valve con ...

CVVT & Camshaft Removal
   • Use fender covers to avoid damaging painted surfaces. • ...

See also:

AGM Battery Removal
1. Disconnect the battery terminals (A). (1) Tightening torque (+) terminal : 7. ...

System Block Diagram
Component Parts And Function Outline Component part Function Vehicle-speed sensor Converts vehicle speed to pulse. ECM Receives signals fr ...

Camshaft Position Sensor (CMPS) Removal
   • DON’T remove the camshaft position sensor during engine running or right after engine ...

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