| 摘要 |
PROBLEM TO BE SOLVED: To enable early startup and stabilize combustion at the time of starting by injecting fuel immediately after starting cranking, and facilitating introduction of the injected fuel into cylinders. SOLUTION: A crank angle sensor outputs reference signals at an angle BTDCαdeg. as an injection reference, at an angle BTDβdeg. as an ignition reference, and at an angle BTDCγdeg. as a cylinder determination timing (α<β<γ). A cam sensor outputs a cylinder determination signal between the angle BTDCαdeg. and angle BTDCγdeg.. When an ignition switch is set ON, injection is performed in all the cylinders at the same time, for forming wall flow at an intake port or an intake valve. When the cylinder determination signal is generated immediately after outputting a reference signal from the crank angle sensor after starting the cranking, the immediately previous reference signal is recognized as the reference signal at the angle BTDCαdeg. of the injection reference. The simultaneous injection of all the cylinders is controlled in execution timing based on the reference signal.
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