Vehicle traction control system

Details Vehicle traction control system Vehicle traction control system

1989-05-11

1991-05-07

Lall, Parshotam S.

Boots, shoes, and leggings

180197, 303 92, B60K 3100

Patent

active

050142020

ABSTRACT:
The application of brake pressure to limit the spin of a driven wheel in a traction control system is made adaptive to the torque demand on the engine. This is accomplished by increasing the brake pressure when an excessive spin condition is sensed at a rate that is proportional to a parameter related to engine torque. The ramp is then terminated when the wheel parameters attain certain predetermined conditions. The brake pressure ramp is terminated when the wheel jerk is negative while at the same time the wheel deceleration is below a predetermined value. After the ramp is terminated, the brake pressure of the spinning wheel is controlled based on wheel parameters such as wheel spin ratio or the difference between the speed of the spinning wheel and vehicle speed.

REFERENCES:
patent: 4361871 (1982-11-01), Miller et al.
patent: 4703823 (1987-11-01), Yogo et al.
patent: 4856610 (1989-08-01), Leiber et al.
patent: 4884651 (1989-12-01), Harada et al.

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