Method and control unit for operating a transmission of a motor vehicle
AssigneeZF Friedrichshafen AG
InventorJohannes Kemler
Life of this patent
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Abstract
A method for operating a transmission (2) of a motor vehicle includes, in order to trigger a gear shift in the transmission (2), determining a trigger speed depending on a response time of the gear shift to be implemented, depending on a gradient of a motor vehicle-side rotational speed, and depending on a maximum permissible limit speed for the motor vehicle-side rotational speed. The gear shift to be implemented triggered on a control side as function of the trigger speed such that the motor vehicle-side rotational speed does not exceed the maximum permissible limit speed during the implementation of the gear shift. The method also include adapting the trigger speed.
Claims11
A method for operating a transmission (2) of a motor vehicle, comprising:
- in order to trigger a gear shift in the transmission (2), determining a trigger speed depending on a response time of the gear shift to be implemented, depending on a gradient of a motor vehicle-side rotational speed, and depending on a maximum permissible limit speed for the motor vehicle-side rotational speed, wherein the gear shift to be implemented is triggered on a control side as a function of the trigger speed such that the motor vehicle-side rotational speed does not exceed the maximum permissible limit speed during implementation of the gear shift;
- and
- adapting the trigger speed depending on a driver-input torque.
A control unit (6) for operating a transmission (2) of a motor vehicle, the control unit configured for:
- in order to trigger a gear shift in the transmission (2), determining a trigger speed depending on a response time of the gear shift to be implemented, depending on a gradient of a motor vehicle-side rotational speed, and depending on a maximum permissible limit speed for the motor vehicle-side rotational speed, wherein the gear shift to be implemented is triggered on a control side as a function of the trigger speed such that the motor vehicle-side rotational speed does not exceed the maximum permissible limit speed during implementation of the gear shift;
- and
- adapting the trigger speed depending on a driver-input torque.
Dependencies are inferred from the claim text.