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Kia Sorento: [CVVT System Mode] - Cylinder Head Assembly - Engine Mechanical System - Kia Sorento XM 2011-2026 Service ManualKia Sorento: [CVVT System Mode]

Second Generation XM (2011-2026) / Kia Sorento XM 2011-2026 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
1. Remove the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover") 2. Set No.1 cylinder to TDC/comp ...

See also:

Catalytic Converter Description
The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx). [WCC] ...

Windshield defrosting and defogging
WARNING - Windshield heating Do not use the or position during cooling operation in extremely humid weather. The difference between the temperature of the outside air and the windshield could ca ...

Changing a tire with TPMS
If you have a flat tire, the Low Tire Pressure telltale will come on. Have the flat tire repaired by an authorized Kia dealer as soon as possible or replace the flat tire with the spare tire. CAUTI ...

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