Invention Grant
- Patent Title: Method for anticipating downshifting and for monitoring an automatic transmission
- Patent Title (中): 用于预测降档和监测自动变速箱的方法
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Application No.: US13144157Application Date: 2009-12-10
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Publication No.: US08554430B2Publication Date: 2013-10-08
- Inventor: Remi Vandekerkhove
- Applicant: Remi Vandekerkhove
- Applicant Address: FR Boulogne-Billancourt
- Assignee: RENAULT s.a.s.
- Current Assignee: RENAULT s.a.s.
- Current Assignee Address: FR Boulogne-Billancourt
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0950133 20090112
- International Application: PCT/FR2009/052471 WO 20091210
- International Announcement: WO2010/079275 WO 20100715
- Main IPC: G06F17/00
- IPC: G06F17/00 ; B60W10/04 ; B60K20/00

Abstract:
A method for anticipating downshifting upon uphill driving on a vehicle including an automatic transmission and including change laws imposing a change to a lower gear based on pre-established downshifting curves. The method imposes a change to the lower gear to the transmission independently from the gear set point established by the change laws when the acceleration that can be reached at the maximum torque on the current gear is lower than an acceleration threshold necessary for maintaining the vehicle speed.
Public/Granted literature
- US20120022753A1 METHOD FOR ANTICIPATING DOWNSHIFTING AND FOR MONITORING AN AUTOMATIC TRANSMISSION Public/Granted day:2012-01-26
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