Invention Grant
- Patent Title: Method for operating an automatic gearbox
- Patent Title (中): 操作自动变速箱的方法
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Application No.: US12225624Application Date: 2007-02-27
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Publication No.: US07957869B2Publication Date: 2011-06-07
- Inventor: Christian Popp , Klaus Steinhauser , Peter Schiele , Bernd Allgaier , Thilo Schmidt
- Applicant: Christian Popp , Klaus Steinhauser , Peter Schiele , Bernd Allgaier , Thilo Schmidt
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, P.L.L.C.
- Priority: DE102006014946 20060331
- International Application: PCT/EP2007/051836 WO 20070227
- International Announcement: WO2007/113060 WO 20071011
- Main IPC: F16H61/20
- IPC: F16H61/20 ; G06F19/00

Abstract:
A method of operating an automatic transmission of a motor vehicle, in particular a variable-speed transmission. The automatic transmission includes at least five shift elements, at least three of which are engaged in a forward and a reverse gear to transfer torque or force. When disengaging gears for shifting the automatic transmission from a forward or reverse gear to a neutral position, at least one of the at least three shift elements that are engaged in the respective forward or reverse gear is completely disengaged.
Public/Granted literature
- US20090112425A1 Method for Operating an Automatic Gearbox Public/Granted day:2009-04-30
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