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US 8,574,124 B2Granted
Control unit and method to operate a vehicle
AssigneeZF Friedrichshafen AG
InventorJens Weller
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AssigneeZF Friedrichshafen AG
InventorJens Weller
Estimating the term…
A control unit of a motor vehicle for activating a form-locking shift element of a transmission of the motor vehicle in such a way that a defined rotational speed difference is defined, between an input-side component of the form-locking shift element and an output-side component of the form-locking shift element, in order to engage the form-locking shift element. The control unit monitors the rotational speed gradient of the rotational speed of the output-side component of the form-locking shift element from an activation time of the form-locking shift element, at which the engagement process of the form-locking shift element begins. The control unit generates a control signal for a drive assembly in order to increase the torque, at a drive assembly, in the event that the control unit determines that the monitored rotational speed gradient falls below a lower limit.
A control unit of a motor vehicle for activating a form-locking shift element of a transmission of the motor vehicle such that a defined rotational speed difference, between an input-side component and an output-side component of the form-locking shift element, is established in order to close the form-locking shift element,
A method of operating a motor vehicle having a drive assembly and a transmission comprising at least one form-locking shift element, the method comprising the steps of:
A method of operating a motor vehicle having a drive assembly and a transmission comprising at least one form-locking shift element having an input side component and an output side component, the method comprising the steps of:
Dependencies are inferred from the claim text.