[CVVT System Mode]

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(1) Low Speed/Low Load	(2) Part Load
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(3) Low Speed/High Load	(4) High Speed/High Load
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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	Neutral	* Valve Under-lap * Improvement of combustion stability
(2) Part Load	Retard	* Reduction of HC	Retard	* Reduction of pumping loss by retarding the intake valve closing timing
(3) Low Speed/High Load	Completely Advance	* Reduction of pumping loss	Advance	* Improvement of volumetric efficiency
(4) High Speed/High Load	Completely Advance	* Reduction of pumping loss	Advance	* Improvement of volumetric efficiency