Fluid-pressure and analogous brake systems – Pipeless valves
Patent
1979-04-04
1981-07-28
Miller, J. D.
Fluid-pressure and analogous brake systems
Pipeless valves
303119, B60T 800
Patent
active
042807409
ABSTRACT:
A skid prevention method for reducing braking torque during a wheel lock while braking, using a main control system of an anti-skid brake device regardless of the brake input by the driver. When wheel lock is overcome, reduction of braking torque ceases. When wheel lock lasts more than a preset period without reduction in breaking torque, even when wheel lock results from failure of the main control system, the braking torque is reduced for a preset period through an auxiliary system. If the main control system reduces the braking torque for a period longer than a preset time, braking torque reduction by the main control system may be nullified, and when wheel lock lasts longer than a preset period, the braking torque may be reduced by the auxiliary control system for the preset period. An anti-skid device for carrying out this method has a brake for applying the braking torque to the wheels, a main control system for controlling the brake to reduce braking torque in case of wheel lock. An auxiliary control system replaces the main control system in case of failure of the latter; this auxiliary system has a circuit for detecting wheel lock, and circuit actuated when the wheel lock detector circuit is actuated for more than a preset period.
REFERENCES:
patent: 3614401 (1971-10-01), Lode
patent: 3744851 (1973-07-01), Burckhardt et al.
patent: 3920280 (1975-11-01), Luhdorff et al.
patent: 4059312 (1977-11-01), Jonner
Fujii Etsuo
Miyakawa Yoshitaka
Ohmori Taiji
Sato Makoto
Tsuchiya Yoshikazu
Eisenzopf Reinhard J.
Honda Giken Kogyo Kabushiki Kaisha
Miller J. D.
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