PROBLEM TO BE SOLVED: To suppress a fall of drive torque at a torque phase of an upshift.SOLUTION: A controller controls the torque of an engine so as to maintain a rotation number of the engine at a high-rotation number which is higher than a synchronous rotation number at a low-speed stage before an upshift by a preset prescribed rotation number at a torque phase after a start of the upshift, lowers the hydraulic pressure of a release-side clutch C1 at the torque phase, and raises the hydraulic pressure of an engagement-side clutch C2. When a hydraulic pressure command value of the release-side clutch C1 reaches a prescribed value equivalent to a release state before or after a time point at which the hydraulic pressure of the release-side clutch C1 is brought into the release state, the controller maintains the hydraulic pressure command value of the release-side clutch C1 at first current hydraulic pressure at a time point at which the hydraulic pressure command value reaches the prescribed value, performs engine torque-down control in a state that a hydraulic pressure command value of the engagement-side clutch C2 is maintained at second current hydraulic pressure at a time point at which the hydraulic pressure command value of the release-side clutch C1 reaches the prescribed value, and starts an inertia phase.SELECTED DRAWING: Figure 2
【課題】アップシフトのトルク相での駆動トルクの落ち込みを抑制する。【解決手段】コントローラは、アップシフト開始後のトルク相で、エンジンの回転数をアップシフト前の低速段での同期回転数より予め定めた所定回転数だけ高回転数に維持するようにエンジンのトルクを制御し、トルク相で解放側クラッチC1の油圧を低下させかつ係合側クラッチC2の油圧を増大させる。解放側クラッチC1の油圧が解放状態になる時点の前または後にて、解放側クラッチC1の油圧指令値が解放状態に相当する所定値に達する場合には、解放側クラッチC1の油圧指令値を所定値に達した時点における第1の現在油圧に維持し、かつ係合側クラッチC2の油圧指令値を、解放側クラッチC1の油圧指令値が所定値に達した時点における第2の現在油圧に維持した状態でエンジントルクダウン制御を実行してイナーシャ相を開始させる。【選択図】図2
GEAR CHANGE CONTROL DEVICE OF VEHICLE
車両の変速制御装置
2018-06-28
Patent
Electronic Resource
Japanese