Method for drive optimization in a motor vehicle
AssigneeRobert Bosch GmbH
InventorsLars Bieniek, Martin Nordmann
Life of this patent
Estimating the term…
Abstract
In a method for drive optimization in a motor vehicle including at least two drivable wheels at a vehicle axle having individually settable drive torque, to increase the propelling force, the drive torque at at least one wheel is increased in such a way that an increased longitudinal slip of at least 20% results at the wheel.
Claims12
A method for drive optimization in a motor vehicle including at least two drivable wheels at a vehicle axle, an individually settable drive torque being applicable at the drivable wheels, the method comprising:
- increasing a drive torque at at least one wheel of the vehicle in such a way that an increased longitudinal slip of at least 20% results at the at least one wheel, to increase a propelling force;
- and
- modifying, at the same time as the increasing step or with a time offset relative to the increasing step, a drive torque or braking torque at one or more wheels of the vehicle in such a way that a vehicle movement at least approximately follows a locked steering angle.
A method for drive optimization in a motor vehicle including at least two drivable wheels of a vehicle axle, an individually settable drive torque being applicable at the drivable wheels, the method comprising:
- increasing a drive torque at at least one wheel of the vehicle in such a way that a longitudinal slip at the at least one wheel in a friction coefficient-slip diagram assumes an increased value above a friction coefficient maximum, to increase a propelling force;
- and
- modifying, at the same time as the increasing step or with a time offset relative to the increasing step, a drive torque or braking torque at one or more wheels of the vehicle in such a way that a vehicle movement at least approximately follows a locked steering angle.
A control unit for drive optimization in a motor vehicle including at least two drivable wheels at a vehicle axle, an individually settable drive torque being applicable at the drivable wheels, the control unit configured to:
- activate at least one drive unit in the vehicle to increase a drive torque at at least one wheel of the vehicle in such a way that an increased longitudinal slip of at least 20% results at the at least one wheel, to increase a propelling force;
- and
- modify, at the same time as the activating or with a time offset relative to the increasing step, a drive torque or braking torque at one or more wheels of the vehicle in such a way that a vehicle movement at least approximately follows a locked steering angle.
A vehicle, comprising:
- at least one drive unit;
- at least two separately drivable wheels on a vehicle axle;
- and
- a control unit configured to:
- activate the at least one drive unit in the vehicle to increase a drive torque at at least one wheel of the vehicle in such a way that an increased longitudinal slip of at least 20% results at the at least one wheel, to increase a propelling force;
- and
- modify, at the same time as the activating or with a time offset relative to the increasing step, a drive torque or braking torque at one or more wheels of the vehicle in such a way that a vehicle movement at least approximately follows a locked steering angle.
A non-transitory machine-readable medium on which is stored a computer program having program code for drive optimization in a motor vehicle including at least two drivable wheels at a vehicle axle, an individually settable drive torque being applicable at the drivable wheels, the program code, when executed by a control unit, causing the control unit to perform:
- increasing a drive torque at at least one wheel of the vehicle in such a way that an increased longitudinal slip of at least 20% results at the at least one wheel, to increase a propelling force;
- and
- modifying, at the same time as the increasing step or with a time offset relative to the increasing step, a drive torque or braking torque at one or more wheels of the vehicle in such a way that a vehicle movement at least approximately follows a locked steering angle.
Dependencies are inferred from the claim text.