Kia Sorento: [CVVT System Mode]

Second Generation XM (2011-2025) / Kia Sorento XM 2011-2025 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
Driving Condition	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 ...

Kia Sorento: [CVVT System Mode]

CVVT & Camshaft Operation Principle

CVVT & Camshaft Removal

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