Traction control system for fourwheel drive vehicle

Details Traction control system for fourwheel drive vehicle Traction control system for fourwheel drive vehicle

1996-01-17

1998-04-07

Chin, Gary

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

701 84, 701 88, 701 90, 180197, 180248, B60K 17348

Patent

active

057377146

ABSTRACT:
A traction control system for a fourwheel drive vehicle having a center differential comprises a brake pressure control apparatus, an engine output control apparatus, a differential limiting torque control apparatus, vehicle speed calculating means for calculating a reference vehicle speed of a vehicle, slip amount calculating means for calculating a slip amount of each wheel, target slip amount determining means for determining a front target slip amount of front wheels and a rear target slip amount of rear wheels, traction control determining means for determining to operate a traction control when the slip amount of the front wheels exceeds the front target slip amount or when the slip amount of the rear wheels exceeds the rear target slip amount, brake pressure calculating means for calculating a brake pressure so as to apply a brake to the wheels and engine output calculating means for calculating a target engine torque corresponding to a difference between the slip amount and the target slip amount, whereby driving force and side force of the vehicle is properly controlled and the vehicle can be prevented from spins under any driving conditions.

REFERENCES:
patent: 4763262 (1988-08-01), Leiber
patent: 4989686 (1991-02-01), Miller et al.
patent: 5097921 (1992-03-01), Tezuka
patent: 5132908 (1992-07-01), Eto et al.
patent: 5164903 (1992-11-01), Lin et al.
patent: 5168955 (1992-12-01), Naito
patent: 5251719 (1993-10-01), Eto et al.
patent: 5497333 (1996-03-01), Sasaki

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