HYBRID VEHICLE
To more appropriately determine combustion deterioration of an engine during execution of rapid catalyst warming-up control and more appropriately perform the rapid catalyst warming-up control.SOLUTION: During execution of rapid catalyst warming-up control for warming up a catalyst of a purification...
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Zusammenfassung: | To more appropriately determine combustion deterioration of an engine during execution of rapid catalyst warming-up control and more appropriately perform the rapid catalyst warming-up control.SOLUTION: During execution of rapid catalyst warming-up control for warming up a catalyst of a purification device by operating an engine at predetermined speed by injecting fuel in a compression stroke or an expansion stroke and delaying ignition timing, in the case where an idling operation of the engine is instructed, combustion deterioration of the engine is determined when engine speed becomes lower than predetermined speed by a speed threshold value or greater, and in the case where the idling operation of the engine is not instructed, the combustion deterioration of the engine is determined when engine torque estimated from output torque of a first electric motor becomes lower than predetermined torque by a torque threshold value or greater.SELECTED DRAWING: Figure 3
【課題】急速触媒暖機制御を実行している最中のエンジンの燃焼悪化をより適正に判定し、急速触媒暖機制御をより適正に行なう。【解決手段】エンジンを所定回転数で圧縮行程または膨張行程で燃料噴射行なうと共に点火時期を遅角して運転することにより前記浄化装置の触媒を暖機する急速触媒暖機制御を実行している最中に、エンジンのアイドル運転が指示されているときには、エンジンの回転数が所定回転数から回転数用閾値以上下回ったときにエンジンの燃焼悪化を判定し、エンジンのアイドル運転が指示されていないときには、第1電動機の出力トルクから推定されるエンジンのトルクが所定トルクからトルク用閾値以上下回ったときにエンジンの燃焼悪化を判定する。【選択図】図3 |
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