Invention Grant
US08235866B2 Method for actuating a gear step in an automatic or automated transmission of a motor vehicle and corresponding motor vehicle
有权
用于在机动车辆和相应机动车辆的自动或自动变速器中致动齿轮级的方法
- Patent Title: Method for actuating a gear step in an automatic or automated transmission of a motor vehicle and corresponding motor vehicle
- Patent Title (中): 用于在机动车辆和相应机动车辆的自动或自动变速器中致动齿轮级的方法
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Application No.: US12669589Application Date: 2008-07-03
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Publication No.: US08235866B2Publication Date: 2012-08-07
- Inventor: Klaus Steinhauser , Frank Worms , Stephane Klein , Walter Hecht , Bernd Zaenglein
- Applicant: Klaus Steinhauser , Frank Worms , Stephane Klein , Walter Hecht , Bernd Zaenglein
- 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: DE102007033583 20070719; DE102007040671 20070829
- International Application: PCT/EP2008/058575 WO 20080703
- International Announcement: WO2009/010395 WO 20090122
- Main IPC: B60W10/00
- IPC: B60W10/00

Abstract:
A method of actuating a gear step in an automatic or automated transmission of a motor vehicle. The gear step of the transmission and a parking lock, which immobilizes the vehicle, can be engaged as a function of a gear step (P, R, N, D) that can be selected by the driver via a controllable selector device, and as a function of other motor vehicle operating parameters. A separate operating device, which is in addition to the selector device, can activate a holding phase, in which the transmission is in a traction-free neutral position, independently of a predetermined gear step “Park” (P), “Reverse” (R), “Neutral” (N) and/or “Forward” (D) that is specified by the selector device, if the motor vehicle is at least almost at a standstill and at the same time, an ignition circuit acting on a drive motor of the motor vehicle is electrically interrupted.
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