CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
PROBLEM TO BE SOLVED: To stably improve engine startability in ignition start control while accompanying with required minimum assist of rotation of a crank shaft by an electric motor, with respect to a control device of an internal combustion engine.SOLUTION: In an internal combustion engine 12 in...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To stably improve engine startability in ignition start control while accompanying with required minimum assist of rotation of a crank shaft by an electric motor, with respect to a control device of an internal combustion engine.SOLUTION: In an internal combustion engine 12 in which ignition start control is executed to start the internal combustion engine 12 by starting fuel injection and ignition from an expansion stroke cylinder in an expansion stroke in stopping an engine, rotation of a crank shaft 20 is assisted by an MG 28 so that any of other cylinders continued from the cylinder in which the combustion is executed finally just before start of fuel cut in accompany with engine stop request, is stopped in a next expansion stroke after the expansion stroke and an exhaust stroke are once executed during the period of fuel cut, in a case when a rotating speed Ne of the engine in outputting the engine stop request is lower than a prescribed value Ne0.SELECTED DRAWING: Figure 3
【課題】この発明は、内燃機関の制御装置に関し、電動モータによる必要最小限のクランク軸の回転のアシストを伴いつつ着火始動制御時のエンジン始動性を安定的に向上させられるようにすることを目的とする。【解決手段】エンジン停止中に膨張行程にある膨張行程気筒から燃料噴射および点火を開始して内燃機関12を始動させる着火始動制御が行われる内燃機関12において、エンジン停止要求が出された時のエンジン回転速度Neが所定値Ne0よりも低い場合には、エンジン停止要求に伴うフューエルカットの開始直前に最後に燃焼が行われた気筒に続く他の気筒の何れかが、フューエルカットの期間中に膨張行程およびこれに続く排気行程を一度迎えた後に次回の膨張行程において停止するように、クランク軸20の回転をMG28によってアシストさせる。【選択図】図3 |
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