VEHICLE CONTROLLER
PROBLEM TO BE SOLVED: To provide a vehicle controller capable of suppressing a degradation in driving performance since disengagement of a lockup clutch to follow detection of an accidental fire until re-engagement and a degradation in fuel economy since recovery from the accidental fire until the r...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a vehicle controller capable of suppressing a degradation in driving performance since disengagement of a lockup clutch to follow detection of an accidental fire until re-engagement and a degradation in fuel economy since recovery from the accidental fire until the re-engagement.SOLUTION: If it is determined that a cycle of an internal combustion engine is a second cycle after recovery from an accidental fire in a step 104, a lockup clutch is returned to an engaged state (step 107). In a first cycle after recovery from the accidental fire, unburned fuel injected from a fuel injection valve in a cycle in which the accidental fire continues and remaining in a cylinder is burned. Owing to this, if the lockup clutch is returned to the engaged state in the first cycle, torque fluctuation is large and driving performance degrades. If the lockup clutch is returned to the engaged state in the second cycle after recovery from the accidental fire, it is possible to suppress such a degradation in driving performance.
【課題】車両制御装置に関し、失火検出に伴うロックアップクラッチの係合解から再係合までの運転性の悪化、および、失火復帰後から該再係合までの燃費の悪化を抑制する。【解決手段】ステップ104において、失火復帰後の2サイクル目であると判定された場合、ロックアップクラッチが係合状態に戻される(ステップ107)。失火復帰後の1サイクル目においては、失火継続中のサイクルにおいて燃料噴射弁から噴射され、尚且つ、気筒内に残留している未燃燃料が燃焼する。そのため、当該サイクルからロックアップクラッチを係合状態に戻すと、トルク変動が大きく運転性が悪化する。失火復帰後の2サイクル目にロックアップクラッチを係合状態に戻せば、このような運転性の悪化を抑えることができる。【選択図】図2 |
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