Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1986-01-13
1987-09-15
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303106, 303108, 303DIG4, 364426, B60T 870
Patent
active
046935223
ABSTRACT:
A control circuit for adapting slip control of an anti-skid brake system of an automotive vehicle comprising a friction coefficient identification circuit (31, 31'). Upon the instabilization of a wheel the braking pressure control signals controlling the slip by actuating solenoid valves (36-41) are varied by the output signal of the circuit (31, 31') as a function of the momentary deceleration (v.sub.R) of the fastest wheel and/or on the momentary pressure in the hydraulic brake circuits (52, 53, 54) and thus are adapted to the momentary friction coefficient, which in particular depends on the road condition. In one instance, the gradient of the vehicular reference velocity is varied in dependence on the friction coefficient.
REFERENCES:
patent: 3545817 (1970-12-01), Yarber
patent: 3586387 (1971-06-01), Riordan et al.
patent: 4451096 (1984-05-01), Gygax
patent: 4489382 (1984-12-01), Jonner et al.
patent: 4566737 (1986-01-01), Masaki et al.
DE-2: Bosch, Technische Berichte, H.2, 1980, S. 67-72.
Buschmann Gunther
Wupper Hans
Alfred Teves GmbH
Butler Douglas C.
Michals William J.
Raden James B.
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