发明名称 |
Method for operating a vehicle drivetrain |
摘要 |
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. |
申请公布号 |
US8394000(B2) |
申请公布日期 |
2013.03.12 |
申请号 |
US20090435535 |
申请日期 |
2009.05.05 |
申请人 |
POPP CHRISTIAN;STEINHAUSER KLAUS;ARNOLD JORG;HERBETH VALENTINE;ZF FRIEDRICHSHAFEN AG |
发明人 |
POPP CHRISTIAN;STEINHAUSER KLAUS;ARNOLD JORG;HERBETH VALENTINE |
分类号 |
B60W10/04;B60W10/00;F16H59/00 |
主分类号 |
B60W10/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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