Fluid-pressure and analogous brake systems – Multiple control – Fluid and electric
Patent
1988-10-24
1989-08-29
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple control
Fluid and electric
303 14, 303100, 303118, 303119, 303 28, 303 69, 303DIG4, 303 221, 303 50, B60T 838, B60T 1368
Patent
active
048611158
ABSTRACT:
An electrically-controlled motor vehicle brake system, which responds to fluid pressure supplied from a common source. The system includes an electronic control system to process information and issue brake commands. A brake cylinder, to apply and release brake pressure on each respective wheel brake, receives pressure from at least one solenoid valve, connected to receive pressure from the source. The pressure is communicated to the brake cylinder of each respective wheel brake upon receipt of a control signal from the control system. A brake power selector includes both a pedal-operated brake valve, connected on an input side to receive pressure from the source, and connected on an output side to a ventilation portion of the solenoid valve for modulating the brake pressure, and an electrical frequency selector is connected to provide an input signal to the electronic control system upon actuation by an operator of such vehicle during a brake application.
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Butler Douglas C.
Ray Jr.
Wabco Westinghouse Fahrzeugbremsen GmbH
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