Traction control method for vehicle

Details Traction control method for vehicle Traction control method for vehicle

1990-10-04

1993-01-19

Chin, Gary

Boots, shoes, and leggings

180197, 303103, B60T 858

Patent

active

051811740

ABSTRACT:
A traction control method for a vehicle, includes the steps of comparing the amount of driven wheel speed (V.sub.W) changed per unit time with a reference deceleration (.DELTA.V.sub.R-) determined in correspondence to the lowest deceleration on a road surface of a lowest frictional coefficient which can be usually supposed, setting the vehicle speed (V.sub.R) equal to the driven wheel speed (V.sub.W), if the amount of driven wheel speed (V.sub.W) changed per unit time indicates a deceleration less than a reference deceleration (V.sub.R-); setting the vehicle speed (V.sub.R) equal to the last determined vehicle speed (V.sub.R(n-1)) corrected by the reference deceleration, if the amount of driven wheel speed (V.sub.W) changed per unit time indicates a deceleration greater than or equal to the reference deceleration (.DELTA.V.sub.R-); determining a slipping tendency of a driving wheel in a driving state at least in part by comparing a reference speed (V.sub.RH, V.sub.RL) obtained on the basis of a vehicle speed (V.sub.R) with a driving wheel speed; and suppressing the driving torque in accordance with a determined slipping tendency of a driving wheel in the driving state. Further, the amount of driven wheel speed (V.sub.W) changed per unit time may also be compared to a reference acceleration (.DELTA.V.sub.R+).

REFERENCES:
patent: 4718013 (1988-01-01), Kubo
patent: 4787682 (1988-11-01), Muto
patent: 4969100 (1990-11-01), Takata et al.
patent: 4970649 (1990-11-01), Matsuda
patent: 4974163 (1990-11-01), Yasuno et al.
patent: 4982348 (1991-01-01), Matsuda et al.
patent: 4991910 (1991-02-01), Shimanuki et al.
patent: 5003481 (1991-03-01), Matsuda
patent: 5058019 (1991-10-01), Litkouhi

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