公开(公告)号：US11118677B2

公开(公告)日：2021-09-14

申请号：US16817812

申请日：2020-03-13

申请人： AISIN SEIKI KABUSHIKI KAISHA

发明人： Koji Harada ,  Futoshi Hattori ,  Koichi Saito ,  Kenji Aoki

IPC分类号： F16H59/18 ,  F16H61/00 ,  F16H61/02 ,  F16H59/14 ,  F16H59/36 ,  B60W10/06 ,  B60W10/115 ,  B60W30/19

摘要： A transmission control device is used in an automatic transmission device including a transmission gear having friction coupling portions that are changed between a coupled state and an uncoupled state, and configuring transmission stages corresponding to a combination of the coupled state and the uncoupled state, and a hydraulic control device. The device includes: a determination unit determining a change in the transmission stage; and an output unit setting a target value of the hydraulic pressure, and outputting the target value to the hydraulic control device. In a case where one transmission stage is changed to another, the output unit increases the target value to a first value for a first friction coupling portion in the uncoupled state in the one transmission stage, thereafter, to a second value smaller than the first value and maintaining the uncoupled state, and thereafter, to a third value greater than the second value.