Fluid-pressure and analogous brake systems – Speed-controlled – Select high wheel speed versus select low
Patent
1995-05-01
1996-11-05
Ballato, Josie
Fluid-pressure and analogous brake systems
Speed-controlled
Select high wheel speed versus select low
303187, B60T 800
Patent
active
055709362
ABSTRACT:
A fluid pressure control method of an anti-skid control apparatus for a vehicle, wherein the anti-skid control apparatus includes a tandem master cylinder, wheel cylinders of wheels, wheel speed sensors associated with the respective wheels, a control unit receiving the outputs of the wheel speed sensors for judging skid conditions of the respective wheels, and fluid pressure control valves arranged between the tandem master cylinder and the respective wheels, which receive instructions from the control unit for controlling brake fluid pressures of the respective wheels. The control unit supplies brake-decreasing instructions and brake-holding instructions independently to the ones of the fluid-pressure control valves for the front wheels, controls the others of the fluid-pressure control valves for the rear wheels by the diagonal "Select Low" between the skid conditions of the respective rear wheels and respective front wheels diagonally connected to the respective rear wheels. When the brake-decreasing instruction or the brake-holding instruction is supplied to the fluid pressure control valve for the rear wheel, on the basis of the control signal representing the skid condition of the front wheel diagonally connected to the the rear wheel, the control signal representing the skid condition of the front wheel is used for the fluid pressure control valve for the the rear wheel, at a predetermined rate responsive to the control condition of the the front wheel and/or the braked condition of the vehicle.
REFERENCES:
patent: 4925254 (1990-05-01), Holst et al.
patent: 5401082 (1995-03-01), Fuchs et al.
Ohmori Mitsunao
Yokota Motoo
Ballato Josie
Nippon A B S Ltd.
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