FUEL INJECTION TIMING CONTROL [SKYACTIV-D 2.2]
id0140z7988000
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
Operation
• Fuel injection start timing is determined based on the fuel injection amount and crank angle signals input from the crankshaft position sensor.
Determination of Fuel Injection Timing
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• 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
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• The basic target fuel injection timing is calculated based on the engine speed and fuel injection amount.
Injection Timing Correction
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• 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.
