FUEL INJECTION CONTROL OPERATION [L3]

BME014000140T32

Injection Timing

Synchronized injection

• PCM determines fuel injection timing and amount synchronized with the crank angle, and based on the following signals during the intake/exhaust stroke of each cylinder.

- CKP, MAF, ECT, IAT

Non-synchronized injection

• PCM determines fuel injection timing and amount based on the following signals (not synchronized with the crank angle).

- TP, MAF, ECT, IAT

Correction

BARO correction

• Purpose: to maintain the engine stability

• Conditions: at all time

• Action: lower BARO, larger correction

Rear HO2S feedback correction

• Purpose: to control air/fuel ratio close to increase the performance of the catalytic converter

• Conditions: at feedback zone

• Action: Rear HO2S output voltage