Fluid-pressure and analogous brake systems – Pipeless valves
Patent
1985-04-12
1987-04-14
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Pipeless valves
303100, 303111, B60T 884, B60T 876
Patent
active
046573135
ABSTRACT:
A slip-controlled brake system for road vehicles in which one front wheel (VR, VL) and one rear wheel (HR, HL) at a time are connected to a common braking pressure control channel wherein the braking pressure variation in the two braking pressure control channels is influenced in dependence on predetermined selection criteria such as "select-low" and "select-high" criteria. A cornering identification circuit (20') is provided which adds up the slip values (S.sub.VL, S.sub.HL, S.sub.VR, S.sub.HR) of the two wheels of one side of the vehicle and compares them with the slip value sum (S.sub.L, S.sub.R) of the wheels of the other side of the vehicle. When the difference of the slip value sums of the two sides of the vehicle exceeds a limit value, the selection criteria and, hence, the braking pressure variations are temporarily changed. Because of the cornering identification circuit, it is possible to generate information about the driving direction, i.e. about straight-onward driving or cornering, and to logically process it within the scope of brake slip control or traction slip control and irrespective of the number of existing braking pressure control channels.
REFERENCES:
patent: 3535004 (1970-10-01), Howard et al.
patent: 3797892 (1974-03-01), Leiber
patent: 3888549 (1975-06-01), Grosseau
patent: 4451096 (1984-05-01), Gygay
Batistic Ivica
Fennel Helmut
Alfred Teves GmbH
Butler Douglas C.
Michals William J.
Oberley Alvin
Raden James B.
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