Invention Grant
US08672806B2 Method for determining a starting speed in a motor vehicle 失效
用于确定机动车辆的起动速度的方法

  • Patent Title: Method for determining a starting speed in a motor vehicle
  • Patent Title (中): 用于确定机动车辆的起动速度的方法
  • Application No.: US13642246
    Application Date: 2011-03-02
  • Publication No.: US08672806B2
    Publication Date: 2014-03-18
  • Inventor: Roland Mair
  • Applicant: Roland Mair
  • 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: DE102010028282 20100428
  • International Application: PCT/EP2011/053114 WO 20110302
  • International Announcement: WO2011/134704 WO 20111103
  • Main IPC: B60W10/00
  • IPC: B60W10/00 B60W10/02
Method for determining a starting speed in a motor vehicle
Abstract:
A method for determining a startup gear in a motor vehicle for starting from standstill while maintaining a load limit of the clutch in a the drive train which comprises a drive engine built as an internal combustion engine, a friction clutch, and an automatic stepped transmission. To avoid overloading the clutch, the method determines a load-independent startup gear with which startup would occur under the present starting conditions without considering the current load state of the clutch and without complying with a load limit of the clutch. A load-specific startup gear is determined as the highest startup gear, with which during a startup under the present starting conditions, a predefined load limit of the clutch would be maintained with consideration given to the present load state of the clutch. The startup gear is the lowest of the load-independent startup gear and the at least one load-specific startup gear.
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