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FUEL INJECTION TIMING CONTROL OPERATION [MZR-CD (RF Turbo)]

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• Fuel injection start timing is determined based on the fuel injection amount and crank angle signals input from the crankshaft position sensor.

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1 | CKP input signal
2 | Injection signal
3 | Injector lift
4 | Crank angle basic position
5 | Fuel injection starts
6 | Pilot injection period
7 | Correction
8 | Interval
9 | Main injection timing

## Determination of Fuel Injection Timing

• The PCM calculates the optimum fuel injection timing based on the predetermined target fuel injection timing and input signals from each sensor.

## Target Fuel Injection Timing

• Target fuel injection timing is calculated based on engine speed and fuel injection amount.

## Injection Timing Correction

• Actual fuel injection timing is corrected based on the input signals from each sensor such as intake air temperature, engine coolant temperature, and barometric pressure.