Invention Grant
- Patent Title: Method for operating a vehicle drive train having a driving machine and having a transmission apparatus having a plurality of shift elements
- Patent Title (中): 一种具有驱动机器的车辆传动系的操作方法,具有多个变速元件的传动装置
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Application No.: US13521751Application Date: 2010-12-21
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Publication No.: US08652004B2Publication Date: 2014-02-18
- Inventor: Valentine Herbeth , Jorg Arnold , Georg Mihatsch , Thilo Schmidt , Klaus Steinhauser
- Applicant: Valentine Herbeth , Jorg Arnold , Georg Mihatsch , Thilo Schmidt , Klaus Steinhauser
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, PLLC
- Agent Michael J. Bujold
- Priority: DE102010000857 20100113
- International Application: PCT/EP2010/070386 WO 20101221
- International Announcement: WO2011/085926 WO 20110721
- Main IPC: B60W10/00
- IPC: B60W10/00 ; F16H31/00

Abstract:
A method of operating a vehicle drive train having a drive machine, a transmission apparatus having a plurality of shift elements and an output drive. The plurality of shift elements are engaged or disengaged in a power flow for achieving different transmission ratios within the transmission apparatus. The output drive is coupled to a transmission output shaft and the drive machine is coupled to a transmission input shaft of the transmission apparatus. Upon a request to interrupt power flow within the transmission apparatus, between the transmission input shaft and the transmission output shaft, a maximum number of shift elements are transferred to and/or held in an engaged operating state, and the remaining portion of the shift elements are transferred to and/or held in a disengaged operating state with the transmission output shaft being rotatable.
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