Invention Grant
- 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
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Application No.: US13642246Application Date: 2011-03-02
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Publication No.: US08672806B2Publication 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

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.
Public/Granted literature
- US20130040781A1 METHOD FOR DETERMINING A STARTING SPEED IN A MOTOR VEHICLE Public/Granted day:2013-02-14
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