FUEL INJECTION TIMING CONTROL [SKYACTIV-D 1.8]

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Outline

• The PCM determines and controls the optimum fuel injection timing according to engine operation conditions based on the signals from each input sensor.

Block Diagram

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Operation

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

• The basic target fuel injection timing is calculated based on the engine speed and fuel injection amount.

Injection Timing Correction

• The target fuel injection timing is corrected based on the input signal from each sensor, such as the intake air temperature, engine coolant temperature, or barometric pressure.