Process and circuit arrangement for controlling the slip when br

Details Process and circuit arrangement for controlling the slip when br Process and circuit arrangement for controlling the slip when br

1986-12-04

1991-11-19

Oberley, Alvin E.

Fluid-pressure and analogous brake systems

Pipeless valves

303111, B60T 810

Patent

active

050660748

ABSTRACT:
For controlling the slip when braking a road vehicle and in particular for improving control in case of different friction values on the right and left vehicle sides the rotational behavior of the front wheels and, as a measure of the vehicular velocity and vehicular deceleration, the rotational behavior of the rear wheel running with a higher friction value are observed. The rotational behavior of the front wheels and the vehicular deceleration are evaluated in accordance with criteria manifesting the danger of yawing moments which are excessive with respect to the driving stability of the vehicle. Upon reaching a predetermined vehicular deceleration threshold value representative of high yawing moments, any further yawing moment increase is restricted by limiting the braking pressure or the braking pressure increase at the front wheel having a better road surface contact. Thereby, for a certain period, the yawing moment is limited to a value which is manageable by the driver and which permits the required steering reactions in order to prevent perilous yawing angles within normal reaction times.

REFERENCES:
patent: 3825799 (1974-07-01), Matsumura
patent: 3840278 (1974-10-01), Fleischer et al.
patent: 3866981 (1975-02-01), Klatt
patent: 3894773 (1975-07-01), Cleveland et al.
patent: 3918767 (1975-11-01), Reinecke
patent: 3966264 (1976-06-01), Mattori et al.
patent: 4374421 (1983-02-01), Leiber
patent: 4489382 (1984-12-01), Jonner et al.

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