Drivetrain for a motor vehicle
AssigneeGETRAG Driveline Systems GmbH
InventorsHans-Peter Nett, Werner Hoffmann, Jan Potulski
Life of this patent
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Abstract
A drivetrain for a motor vehicle has a friction clutch for transmitting drive torque for the motor vehicle and has an actuator arrangement for actuating the friction clutch. The actuator arrangement has a first actuator which is designed to close the friction clutch quickly with little force expenditure in order to thus quickly close up the play which is present in the open state of the friction clutch. The actuator arrangement has a second actuator which is designed such that, with a small stroke, it applies a large force for actuating the friction clutch in order to keep the friction clutch closed with little energy expenditure.
Claims22
A drivetrain for a motor vehicle, having a friction clutch for transmitting drive torque for the motor vehicle and having an actuator arrangement for actuating the friction clutch, wherein the actuator arrangement has a first actuator which is designed to close the friction clutch quickly with little force expenditure in order to thus quickly close a clearance which is present in the open state of the friction clutch, and a second actuator which is designed such that, with a small stroke, it applies a large force for actuating the friction clutch in order to keep the friction clutch closed with little energy expenditure.
A drivetrain for a motor vehicle having a friction clutch for transmitting drive torque for the motor vehicle and having an actuator arrangement for actuating the friction clutch, the actuator arrangement having a first pump and a second pump, the first pump being designed to displace a larger fluid quantity at a lower pressure than the second pump, and the first and second pumps being embodied as rotary screw pumps.
A drivetrain for a motor vehicle, having a friction clutch for transmitting drive torque for the motor vehicle and having an actuator arrangement for actuating the friction clutch, wherein the actuator arrangement has a first actuator which is designed to close the friction clutch quickly with little force expenditure in order to thus quickly close a clearance which is present in the open state of the friction clutch, and a second actuator which is designed such that, with a small stroke, it applies a large force for actuating the friction clutch in order to keep the friction clutch closed with little energy expenditure, the first actuator having a first pump and the second actuator having a second pump, the first pump being designed to displace a larger fluid quantity at a lower pressure than the second pump, and the first and second pumps being embodied as rotary screw pumps.
Dependencies are inferred from the claim text.