Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Indication or control of braking – acceleration – or deceleration
Reexamination Certificate
2005-03-01
2005-03-01
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Indication or control of braking, acceleration, or deceleration
Reexamination Certificate
active
06862513
ABSTRACT:
A method and an apparatus for regulating the speed of the low-μ wheel as a vehicle starts from rest or accelerates on a road surface having adhesive friction values that differ between the left and right sides of the vehicle (split-μ), the low-μ wheel being braked by braking intervention when it has exceeded a defined slip threshold. In order to improve the acceleration behavior of the vehicle, it is proposed to regulate the speed of the slipping low-μ wheel to a defined setpoint speed during a setpoint speed regulation phase in which the setpoint pressure for the brake of the low-μ wheel is set so that the wheel tracks the setpoint speed; to discontinue setpoint speed regulation when the high-μ wheel meets a defined breakaway condition; to initiate a setpoint pressure control operation during a setpoint pressure control phase in which the setpoint pressure of the low-μ wheel is abruptly reduced in order to decrease the drive torque transferred to the high-μ wheel; and lastly to continue setpoint speed regulation.
REFERENCES:
patent: 5275474 (1994-01-01), Chin et al.
patent: 5511862 (1996-04-01), Fujioka
patent: 794081 (1997-09-01), None
Heinsohn Rainer
Trefzer Mirko
Beaulieu Yonel
Kenyon & Kenyon
Robert & Bosch GmbH
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