Fuel Injection Timing Control Description

Fuel Injection Timing Control Description

The injection timing suitable for all vehicle conditions is controlled based on inputs from respective sensors. The injection timing is determined by comparing actual measured values of pulse signals from the crankshaft position (CKP) sensor and camshaft position (CMP) sensor with the target injection timing stored in the map of the ECM.

Coolant Temperature Compensation
The engine control module will advance the fuel injection timing with a decrease in engine coolant temperature. This is performed to reduce white smoke emission.

High Altitude Compensation
The engine control module with advance the fuel injection timing with an increase in altitude due to the lower air density. This is performed to reduce white smoke emission.

Cold Start Compensation
The engine control module will advance the fuel injection timing with a decrease in intake air temperature. This is performed to reduce white smoke emission.