Method and apparatus for controlling drive slip
AssigneeRobert Bosch GmbH
InventorsJohannes Schmitt, Andreas Zoebele
Life of this patent
Estimating the term…
Abstract
In a method and an apparatus for drive slip control, a switchover is made in the initial vehicle movement (drive-off) range from slip control to reference engine speed control. Additionally or alternatively, a braking intervention is performed, the braking force being controlled (in closed loop) only at the wheel which first exhibits slip, and the braking force control being accomplished in such a way that the other wheel runs in substantially stable fashion.
Claims12
A method for controlling a drive slip of a vehicle, comprising the steps of:
- reducing at least a torque of a drive unit of the vehicle upon an occurrence of an incipient slippage of at least one driven wheel of the vehicle;
- and
- performing, in an initial movement range of the vehicle, an engine speed control action, a reference engine speed value of which being defined as a function of operating variables of the vehicle and of the drive unit, the reference engine speed value being adjusted at the drive unit.
A method for controlling a drive slip of a vehicle, comprising the steps of:
- detecting an incipient slippage at at least one of a first driven wheel and a second driven wheel of the vehicle;
- identifying at which one of the first driven wheel and the second driven wheel the slippage was first detected;
- upon detecting the slippage, performing an intervention, to reduce the slippage, at a wheel of the first driven wheel and the second driven wheel at which the slippage was first detected;
- and
- controlling a braking force at the wheel of the first driven wheel and the second driven wheel at which the slippage was first detected such that other wheel of the first driven wheel and the second driven wheel of the vehicle runs in a substantially stable fashion.
An apparatus for controlling a drive slip of a vehicle, comprising:
- a control unit for detecting an incipient slippage of at least one driven wheel of the vehicle, for reducing at least a torque of a drive unit of the vehicle when the slippage has been detected, and, in an initial movement range of the vehicle, for ascertaining a reference engine speed value as a function of operating variables of at least one of the vehicle and the drive unit, the reference engine speed value being adjusted at the drive unit.
An apparatus for controlling a drive slip of a vehicle, comprising:
- a control unit for detecting an incipient slippage of at least one of a first driven wheel and a second driven wheel of the vehicle, for building up, in response to the detection of the incipient slippage and in order to reduce the incipient slippage, a braking force only at a wheel of the first driven wheel and the second driven wheel at which the incipient slippage first occurred, and for controlling the braking force at the wheel of the first driven wheel and the second driven wheel at which the slippage first occurred such that other wheel of the first driven wheel and the second driven wheel of the vehicle runs in a substantially stable fashion.
Dependencies are inferred from the claim text.