VEHICLE CONTROL DEVICE

To enable an engine to automatically re-operate if an engine rotation speed is increased according to release of a brake when a brake limitation device cannot operate and an engine stall is caused due to fuel cut during operation of a brake.SOLUTION: A vehicle control device is structured as follows...

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Bibliographic Details
Main Authors YAMASHITA YUKIYASU, MINAKI TAKASHI, OZEKI TAKAHIRO
Format Patent
LanguageEnglish
Japanese
Published 10.07.2024
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Summary:To enable an engine to automatically re-operate if an engine rotation speed is increased according to release of a brake when a brake limitation device cannot operate and an engine stall is caused due to fuel cut during operation of a brake.SOLUTION: A vehicle control device is structured as follows: at abnormal time when an ABS control device as a brake limitation device cannot operate, even if engine stall occurs because driving wheels are locked by operation of a wheel brake and an engine rotation speed Ne is reduced, and the determination of step S1 becomes YES and protection F/C (fuel cut) is executed in step S2, fuel supply is restarted and thereby an engine is automatically re-operated and a driving operation is facilitated because the determination of step S5 becomes YES and the protection F/C is stopped in step S6 when the engine rotation speed Ne becomes a fuel cut stop determination value (nereso+α) or more according to release of a brake.SELECTED DRAWING: Figure 3 【課題】ブレーキ制限装置が作動不可でブレーキ作動時にフューエルカットによりエンジンストールが発生し易い場合に、ブレーキ解除に伴ってエンジン回転数が上昇したらエンジンが自動的に再稼働させられるようにする。【解決手段】ブレーキ制限装置であるABS制御装置が作動不可の異常時には、ホイールブレーキの作動で駆動輪がロックしてエンジン回転数Neが低下し、ステップS1の判断がYESになってステップS2で保護F/C(フューエルカット)が実行されることによりエンジンストールが発生しても、ブレーキ解除に伴いエンジン回転数Neがフューエルカット中止判定値(nereso+α)以上になると、ステップS5の判断がYESになってステップS6で保護F/Cが中止されるため、燃料供給が再開されることによりエンジンが自動的に再稼働させられ、運転操作が容易になる。【選択図】図3
Bibliography:Application Number: JP20220212275