Invention Grant
- Patent Title: Method for operating a vehicle drivetrain
- Patent Title (中): 操作车辆传动系的方法
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Application No.: US12435535Application Date: 2009-05-05
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Publication No.: US08394000B2Publication Date: 2013-03-12
- Inventor: Christian Popp , Klaus Steinhauser , Jorg Arnold , Valentine Herbeth
- Applicant: Christian Popp , Klaus Steinhauser , Jorg Arnold , Valentine Herbeth
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, PLLC
- Priority: DE102008001566 20080506
- Main IPC: B60W10/04
- IPC: B60W10/04 ; B60W10/00 ; F16H59/00

Abstract:
A method for operating a vehicle drivetrain (1) having a drive motor (9), a transmission (10) and a drive output (2). When a gear ratio change is called for in the transmission (10), between an actually engaged gear and a target gear, one of a frictional or an interlock-type shift element is engaged in a flow of force in the vehicle drivetrain (1) and the other of an interlock-type or a frictional shift element is disengaged from the flow of force in the vehicle drivetrain (1). An actual speed that is at least equivalent to a transmission input speed is monitored and an actuation pressure of the frictional shift element involved in the shift operation and/or a torque of the drive motor (9) is/are varied to change the actual speed to a nominal speed.
Public/Granted literature
- US20090280951A1 METHOD FOR OPERATING A VEHICLE DRIVETRAIN Public/Granted day:2009-11-12
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