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US 11,142,077 B2Granted
Method and device for operating a motor vehicle, and motor vehicle
AssigneeRobert Bosch GmbH
InventorAndreas Erban
Life of this patent
Estimating the term…
Abstract
A method for operating a motor vehicle which includes at least one wheel axle having two drive wheels, each drive wheel being drivable with the aid of a wheel-specific drive unit for the purpose of moving the motor vehicle on a roadway. It is provided that the drive units of the wheel axle are controlled as a function of a difference between the longitudinal forces applicable at the drive wheels of the wheel axle to the roadway.
Claims12
A method for operating a motor vehicle, which includes at least one wheel axle having two drive wheels, the method comprising:
- controlling, via a control unit, each of the drive units of the wheel axle as a function of a difference between the longitudinal forces applicable to a roadway at the drive wheels of the wheel axle to the roadway, so as to ensure stable driving operation without static friction loss;
- and
- driving each of the drive wheels with a wheel-specific drive unit to move the motor vehicle on a roadway;
- wherein each of the drive wheels is assigned a corresponding one of the drive units,
- wherein the drive units each include an electric machine which is operable by a motor and/or by a generator,
- wherein each of the drive units are controlled by the control unit and receive electrical energy necessary for their drive from an electrical energy store, and
- wherein the control unit carries out a process which predefines setpoint wheel torques for the drive units in a wheel-specific manner starting from a requested axle drive torque for one of the wheel axles and starting from a differential torque determined as a function of the difference, so that wheel-specific brake interventions by a braking system are not needed.
4 more elements
A device for operating a motor vehicle, which includes at least one wheel axle having two drive wheels, comprising:
- a control unit configured to perform the following:
- controlling each of the drive units of the wheel axle as a function of a difference between the longitudinal forces applicable to a roadway at the drive wheels of the wheel axle to the roadway, so as to ensure stable driving operation without static friction loss;
- and
- driving each of the drive wheels with a wheel-specific drive unit to move the motor vehicle on a roadway;
- wherein each of the drive wheels is assigned a corresponding one of the drive units,
- wherein the drive units each include an electric machine which is operable by a motor and/or by a generator,
- wherein each of the drive units are controlled by the control unit and receive electrical energy necessary for their drive from an electrical energy store, and
- wherein the control unit carries out a process which predefines setpoint wheel torques for the drive units in a wheel-specific manner starting from a requested axle drive torque for one of the wheel axles and starting from a differential torque determined as a function of the difference, so that wheel-specific brake interventions by a braking system are not needed.
5 more elements
A motor vehicle, comprising:
- at least one wheel axle having two drive wheels, wherein each of the drive wheels is assigned an individually controllable drive unit;
- and
- a control unit configured to perform the following:
- controlling each of the drive units of the wheel axle as a function of a difference between the longitudinal forces applicable to a roadway at the drive wheels of the wheel axle to the roadway, so as to ensure stable driving operation without static friction loss;
- and
- driving each of the drive wheels with a wheel-specific drive unit to move the motor vehicle on a roadway;
- wherein each of the drive wheels is assigned a corresponding one of the drive units,
- wherein the drive units each include an electric machine which is operable by a motor and/or by a generator,
- wherein each of the drive units are controlled by the control unit and receive electrical energy necessary for their drive from an electrical energy store, and
- wherein the control unit carries out a process which predefines setpoint wheel torques for the drive units in a wheel-specific manner starting from a requested axle drive torque for one of the wheel axles and starting from a differential torque determined as a function of the difference, so that wheel-specific brake interventions by a braking system are not needed.
7 more elements
Dependencies are inferred from the claim text.