- 专利标题: Control device and control method for vehicle power transmission device
-
申请号: US12230232申请日: 2008-08-26
-
公开(公告)号: US08370034B2公开(公告)日: 2013-02-05
- 发明人: Kenta Kumazaki , Tooru Matsubara , Atsushi Tabata
- 申请人: Kenta Kumazaki , Tooru Matsubara , Atsushi Tabata
- 申请人地址: JP Toyota
- 专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JP Toyota
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2007-238476 20070913
- 主分类号: G06F7/00
- IPC分类号: G06F7/00
摘要:
When an engine stop control is executed while an automatic ratio shift portion is in a neutral state, a switching clutch is operated, so that a differential portion carrier of a differential portion planetary gear device that is linked to an engine, and a differential portion ring gear linked the automatic ratio shift portion are integrally rotated. Therefore, along with the engine stop control, the rotation speed of the rotating elements of the differential portion planetary gear device is reduced while the rotating elements are integrally rotated or substantially integrally rotated. Since the rotating elements are rotated integrally or substantially integrally, the high rotation speed of the differential portion ring gear linked to the automatic ratio shift portion, which tends to have a heightened rotation speed particularly during the neutral state, is prevented.