FUEL INJECTION TIMING CONTROL [SKYACTIV-D 1.5]
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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
Operation
• Fuel injection start timing is determined based on the fuel injection amount and crank angle signals input from the CKP 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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• Target fuel injection timing is calculated based on the engine speed and the fuel injection amount.
Injection Timing Correction
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• The actual fuel injection timing is corrected based on the input signals from each sensor such as the IAT, ECT, and BARO sensors.
