公开(公告)号：EP3690287A1

公开(公告)日：2020-08-05

申请号：EP18868151.4

申请日：2018-10-05

申请人： Mazda Motor Corporation

发明人： SAITO, Tadashi ,  KUBO, Tomohiro ,  HANAE, Hiroki ,  NAKAYAMA, Yasunari

IPC分类号： F16H61/04 ,  F16H59/68 ,  F16H61/684

摘要： A shift control device for an automatic transmission includes: an engagement control unit that controls an engagement hydraulic pressure supplied to an engagement hydraulic chamber of an engagement side friction element; a hydraulic pressure detecting unit that detects the engagement hydraulic pressure; a reference setting unit that calculates a predicted value of the engagement hydraulic pressure during shifting, based on a rising characteristic of the engagement hydraulic pressure from when supply of the engagement hydraulic pressure is started to when engagement of the engagement side friction element is started, and sets the predicted value as a reference hydraulic pressure; and an engagement start detecting unit that detects an engagement start time point of the engagement side friction element, based on a difference between the hydraulic pressure detected by the hydraulic pressure detecting unit during the shifting and the reference hydraulic pressure.