Method and device for operating a motor vehicle, and motor vehicle
AssigneeVitesco Technologies Germany GmbH
InventorsBernd Knoll, Rainer Ertel, Gerhard Hinkel, Lars Nitz
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a method for operating a motor vehicle that includes a drive unit, an output unit, and a clutch arranged between the drive unit and the output unit and configured to transmit a torque. A detection unit detects an operating state of the drive unit. When the operating state of the drive unit is in an overrun mode, a control unit controls a clutch slip, which results in adjustment of the torque that can be transmitted as a function of a speed of the motor vehicle. The disclosure further relates to a device for operating a motor vehicle, and to a motor vehicle that includes such a device.
Claims19
A method for operating a motor vehicle having a drive unit, an output unit, and a clutch arranged therebetween and configured to transmit a torque, the method comprising:
- detecting, at a detection unit, an operating state of the drive unit;
- when an overrun mode is detected, controlling, by a control unit, a clutch slip which results in controlling the torque as a function of a speed of the motor vehicle;
- and
- wherein a step-by-step controlled overrun control system is assisted in such a way that the controllable clutch slip compensates the steps of the overrun control system, in particular a gear change, by exploitation of a maximum engine speed and thus a maximum engine braking power over the overrun mode.
A device for operating a motor vehicle comprising a drive unit, an output unit, and a clutch arranged therebetween and configured to transmit a torque, the device comprising:
- a detection unit configured to detect an operating state of the drive unit;
- a control unit configured to vary a clutch slip and, resulting therefrom, in changing the torque that can be transmitted when an overrun mode is detected;
- and
- wherein the control unit is a step-by-step controlled overrun control system and wherein the controllable clutch slip assist the step-by-step controlled overrun control system to compensate the steps of the overrun control system, in particular a gear change by exploiting a maximum engine speed and thus a maximum engine braking power over an entire overrun mode.
A motor vehicle comprising a device for operating a motor vehicle comprising a drive unit, an output unit, and a clutch arranged therebetween and configured to transmit a torque, the device comprising:
- a detection unit configured to detect an operating state of the drive unit;
- a control unit configured to vary a clutch slip and, resulting therefrom, in changing the torque that can be transmitted when an overrun mode is detected;
- and
- wherein the control unit is a step-by-step controlled overrun control system and wherein the controllable clutch slip assist the step-by-step controlled overrun control system to compensate the steps of the overrun control system, in particular a gear change, by exploiting a maximum engine speed and thus a maximum engine braking power over an entire overrun mode.
Dependencies are inferred from the claim text.