Motor vehicle comprising a drive train having a multiple clutch drive

A power train for a motor vehicle, said power train comprising

• a drive unit;
• a gearbox with a first gearbox input shaft and a second gearbox input shaft;
• and
• a clutch device with a first multi-disk clutch arrangement, which is assigned to the first gearbox input shaft, and a second multi-disk clutch arrangement, which is assigned to the second gearbox input shaft, for transmitting torque between the drive unit and the gearbox;
• means for supplying an operating fluid to the clutch arrangements for operation under the action of the operating fluid;
• and
• an actuator arrangement and a control unit, which controls the actuator arrangement, by means of which gears assigned to the first and second gearbox input shafts can be engaged and disengaged,
• wherein the control unit is designed to automatically engage at least one gearbox gear by means of the actuator arrangement in response to the parking of the vehicle, and
• wherein the control unit is designed to automatically disengage again, upon the occurrence of a disengagement condition, the minimum of one gearbox gear which was engaged by means of the actuator arrangement when the vehicle was parked.

A power train for a motor vehicle, said power train comprising

• a drive unit;
• a gearbox with a first gearbox input shaft and a second gearbox input shaft;
• and
• a clutch device with a first multi-disk clutch arrangement, which is assigned to the first gearbox input shaft, and a second multi-disk clutch arrangement, which is assigned to the second gearbox input shaft, for transmitting torque between the drive unit and the gearbox;
• means for supplying an operating fluid to the clutch arrangements for operation under the action of the operating fluid;
• and
• an actuator arrangement and a control unit, which controls the actuator arrangement, by means of which gears assigned to the first and second gearbox input shafts can be engaged and disengaged,
• wherein the control unit is designed to automatically engage at least one gearbox gear by means of the actuator arrangement in response to the parking of the vehicle, and
• wherein the control unit is designed, in preparation for the starting-off of the vehicle, to automatically disengage again all of the gears which were engaged by means of the actuator arrangement when the vehicle was parked except for at least one gear, which is suitable for starting off and which possibly is selected by the driver by the use of a manually operated selector device, where no more than one assigned gear remains engaged for each gearbox input shaft.

A power train for a motor vehicle, said power train comprising:

• a drive unit;
• a gearbox with a first gearbox input shaft and a second gearbox input shaft;
• and
• a clutch device with a first multi-disk clutch arrangement, which is assigned to the first gearbox input shaft, and a second multi-disk clutch arrangement, which is assigned to the second gearbox input shaft, for transmitting torque between the drive unit and the gearbox;
• means for supplying an operating fluid to the clutch arrangements for operation under the action of the operating fluid;
• and
• an actuator arrangement and a control unit, which controls the actuator arrangement, by means of which gears assigned to the first and the second gearbox input shafts can be engaged and disengaged,
• wherein the starting of the drive unit can be blocked and released as a function of at least one of the actuation and nonactuation of a vehicle brake system and of the operating state of a manually operated selector device and the gearbox mode in effect at the moment in question, and
• wherein a change from a vehicle and/or gearbox mode applicable at one moment to another vehicle and/or gearbox mode by the appropriate operation of a manually operated selector device for selecting various vehicle and/or gearbox modes can be blocked and released as a function of the actuation and nonactuation of the vehicle brake system and/or the change to the other vehicle and/or gearbox mode by appropriate operation of the selector device is or can be positively linked with an actuation of the vehicle brake system.

A power train for a motor vehicle, said power train comprising:

• a drive unit;
• a gearbox with a first gearbox input shaft and a second gearbox input shaft;
• and
• a clutch device with a first multi-disk clutch arrangement, which is assigned to the first gearbox input shaft, and a second multi-disk clutch arrangement, which is assigned to the second gearbox input shaft, for transmitting torque between the drive unit and the gearbox;
• means for supplying an operating fluid to the clutch arrangements for operation under the action of the operating fluid;
• and
• an actuator arrangement and a control unit, which controls the actuator arrangement, by means of which gears assigned to the first and the second gearbox input shafts can be engaged and disengaged,
• wherein a change from one mode of the vehicle and/or of the gearbox in effect at a particular moment to another vehicle and/or gearbox mode by appropriate operation of a manually operated selector device for selecting various vehicle and/or gearbox modes can be blocked and released as a function of the actuation and nonactuation of the vehicle brake system, and the change to the other vehicle and/or gearbox mode by the appropriate operation of the selector device is or can be positively linked with an actuation of the vehicle brake system.