Balancing unit of a motor vehicle and method for controlling same
AssigneeGKN Automotive AG
InventorsMichael Höck, Harwin Niessen
Life of this patent
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Abstract
To reduce the complexity and the outlay involved in the development and implementation in a vehicle of systems and methods known from the prior art for operating a differential-free, clutch-controlled balancing unit having a first clutch and a second clutch, the invention provides for the first clutch and the second clutch to be controlled independently of the driving conditions, and always using the same variable controlled variable of the same value.
Claims18
A system comprising a differential-free balancing unit of an at least temporarily drivable axle of a motor vehicle, the balancing unit comprising:
- an input element;
- a first output element couplable to the input element via a first frictionally locking clutch to transmit drive power to a first driven wheel;
- and
- a second output element couplable to the input element via a second frictionally locking clutch to transmit drive power to a second driven wheel;
- wherein the coupling torques which can be set for the first clutch and the second clutch are set selectively as a function of a driving state by a control device by calculation of a manipulated parameter during the operation of the vehicle, wherein the first clutch and the second clutch are actuated with a same value of the manipulated parameter independently of the driving state, and
- wherein the calculation of the manipulated parameter is based on a force flux potential of one of the first or second driven wheel on the inside of a bend during cornering.
A system comprising a differential-free balancing unit of an at least temporarily drivable axle of a motor vehicle, the balancing unit comprising:
- an input element;
- a first output element couplable to the input element via a first frictionally locking clutch to transmit drive power to a first driven wheel;
- and
- a second output element couplable to the input element via a second frictionally locking clutch to transmit drive power to a second driven wheel;
- wherein the coupling torques which can be set for the first clutch and the second clutch are set selectively as a function of a driving state by a control device by calculation of a manipulated parameter during the operation of the vehicle, wherein the first clutch and the second clutch are actuated with a same value of the manipulated parameter independently of the driving state, and
- wherein detection of first and second force flux potentials of the respective first and second driven wheels is provided, and during the calculation of the manipulated parameter in the case of acceleration from a stationary state the force flux potential of a driven wheel with a higher force flux potential is used for the calculation of the manipulated parameter.
A system comprising a differential-free balancing unit of an at least temporarily drivable axle of a motor vehicle, the balancing unit comprising:
- an input element;
- a first output element couplable to the input element via a first frictionally locking clutch to transmit drive power to a first driven wheel;
- and
- a second output element couplable to the input element via a second frictionally locking clutch to transmit drive power to a second driven wheel;
- wherein the coupling torques which can be set for the first clutch and the second clutch are set selectively as a function of a driving state by a control device by calculation of a manipulated parameter during the operation of the vehicle, wherein the first clutch and the second clutch are actuated with a same value of the manipulated parameter independently of the driving state, and
- wherein during the calculation of the manipulated variable at a high vehicle speed a μ-low control is provided in which a force flux potential of a driven wheel with lower force flux potential is used for the calculation of the manipulated parameter.
Dependencies are inferred from the claim text.