Invention Grant
- Patent Title: Transmission device and method for operating a transmission device
- Patent Title (中): 用于操作传输设备的传输设备和方法
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Application No.: US13320921Application Date: 2010-10-06
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Publication No.: US09404574B2Publication Date: 2016-08-02
- Inventor: Peter Ziemer , Thilo Schmidt , Georg Gierer , Gert Bauknecht , Thomas Lindner , Peter Schiele
- Applicant: Peter Ziemer , Thilo Schmidt , Georg Gierer , Gert Bauknecht , Thomas Lindner , Peter Schiele
- 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: DE102009045508 20091009
- International Application: PCT/EP2010/064933 WO 20101006
- International Announcement: WO2011/042470 WO 20110414
- Main IPC: F16H59/00
- IPC: F16H59/00 ; F16H63/30 ; F16H57/08

Abstract:
A transmission device has at least one electro-hydraulic transmission control unit and a method of operating the transmission device having a plurality of gear wheel that can be engaged and disengaged from a force flow by fluidically actuated shifting elements. A piston space of a first shifting element, delimited by a second functional surface of the actuating piston of the first shifting element, is made separate from a piston space of a second shifting element, delimited by the first functional surface of the actuating piston, and an area of the second shifting element, that carries an actuating pressure, or an area of the first shifting element, that carries an actuating pressure, is, or can be, connected to the piston space delimited by the second functional surface of the actuating piston of the first shifting element.
Public/Granted literature
- US20120186376A1 TRANSMISSION DEVICE AND METHOD FOR OPERATING A TRANSMISSION DEVICE Public/Granted day:2012-07-26
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