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CD KIA 04MY K2700 Pregio Training

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CD KIA 04MY K2700 Pregio Training
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Chonan Technical Service Training Center

Compare to J2,JT engine, the big difference of D4BH engine is the fuel system. D4BH engine is equipped with COVEC-F System injection pump. COVEC-F System is the abbreviation of Computed VE Control - Full System which fully electronic controls fuel injection amount and fuel injection timing.

Comparing to mechanical injection pump, GE actuator controls the control sleeve that is the control device of fuel injection amount and the movement of control sleeve is monitored by CSP Sensor (Control Sleeve Position),that is assembled inside of GE actuator assembly. For injection timing control, TCV (Timing Control Valve) is installed. TCV controls timer piston location and TPS (Timer Position Sensor) monitors the location of timer piston for feedback control. For more details, please refer to Fuel System section.









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