Driver brake valve

Details Driver brake valve Driver brake valve

1988-01-14

1989-09-26

Moore, David K.

Fluid-pressure and analogous brake systems

Multiple systems

Fluid pressure and electric

303 15, 303 20, 303DIG3, B60T 1368

Patent

active

048695572

ABSTRACT:
Driver brake valve for operating compressed air brakes of rail vehicles. An electropneumatic converter is used to generate a servopressure. The servopressure actuates a relay valve for pressurizing a main air line. An electronic regulation circuit receives a plurality of electrical control signals, including a signal proportional to the pneumatic servo-pressure. The regulation circuit generates an ideal value signal for controlling the electro-pneumatic converter and controls the starting behavior of the brake system. Brake demands which exceed a threshold value are applied to the electronic circuit which generates the ideal value signal. Pressure sensors connected to the main air line and a flow sensor connected to a main container line are used to derive the ideal values for controlling the pneumatic servopressure and the operation of the relay valve.

REFERENCES:
patent: 3402972 (1968-09-01), Cooper et al.
patent: 3767272 (1973-10-01), Leiber
patent: 3814484 (1974-06-01), Matthews et al.
patent: 3874743 (1975-04-01), Fleischer et al.
patent: 3920285 (1975-11-01), Maskery
patent: 4501170 (1985-02-01), Muller et al.

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