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Kia Forte: [CVVT System Mode] - Exhaust Emission Control System - Emission Control System - Kia Forte TD 2014-2018 Service ManualKia Forte: [CVVT System Mode]

Second generation YD (2014-2018) / Kia Forte TD 2014-2018 Service Manual / Emission Control System / Exhaust Emission Control System / [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 (Continuously Variable Valve Timing) System 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 ...

Engine Control / Fuel System
...

See also:

Immobilizer system (if equipped)
Your vehicle may be equipped with an electronic engine immobilizer system to reduce the risk of unauthorized vehicle use. Your immobilizer system is comprised of a small transponder in the ignit ...

Replacement
1. Uplift the vehicle with lift. 2. Drain the manual transaxle oil after loosening the drain plug (A). 3. ...

Auto Defogging Sensor Description
The auto defogging sensor is installed on the front windshield glass. The auto defogging sensorr senses moisture on the windshild. The air conditioner control module receives the signal from ...

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