Title:
TRACTION CONTROL ALGORITHM FOR VEHICLE OPERATION UPON DEFORMABLE ROAD SURFACES
Document Type and Number:
WIPO Patent Application WO2002004242
Kind Code:
A9
Abstract:
A vehicle traction control system is actuated when driven wheel slip (S1) exceeds a predetermined slip threshold (Ts) to reduce the amount of driven wheel slip (S1) by reducing the driven wheel speed. The traction control system also monitors vehicle deceleration. Upon detecting that the vehicle is decelerating and that the vehicle deceleration has exceed a deceleration threshold, the traction control system determines that the vehicle has encountered a deformable surface such as mud or deep snow. Upon detecting entry onto a deformable surface, the slip threshold (Ts) is linearly increased over a period of time to increase the driven wheel speed and thereby allow the wheels to churn through the deformable surface.
Inventors:
PRIEMER DOUGLAS J (US)
DUMM BERNARD W (US)
DUMM BERNARD W (US)
Application Number:
PCT/US2001/021424
Publication Date:
October 17, 2002
Filing Date:
July 06, 2001
Export Citation:
Assignee:
KELSEY HAYES CO (US)
PRIEMER DOUGLAS J (US)
DUMM BERNARD W (US)
PRIEMER DOUGLAS J (US)
DUMM BERNARD W (US)
International Classes:
B60K28/16; B60T8/175; G06F7/00; B60W40/06; (IPC1-7): B60K28/16
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