Apparatus for increasing brake cylinder pressure by...

Details Apparatus for increasing brake cylinder pressure by... Apparatus for increasing brake cylinder pressure by...

2005-07-05

2005-07-05

Lavinder, Jack (Department: 3613)

Fluid-pressure and analogous brake systems

With pump

Pressure control

C303S116300, C303S119200

Reexamination Certificate

active

06913326

ABSTRACT:
Hydraulic pressure control apparatus for controlling a pressure of a brake cylinder pressure, including a pump device connected to the brake cylinder and including at least one set of a pump for delivering a pressurized fluid to the brake cylinder and a pump operating electric motor, a low-pressure source for storing the fluid discharged from the brake cylinder, a solenoid-operated pressure control valve disposed between the low-pressure source and the brake cylinder and operated with an electric energy applied thereto, for controlling the brake cylinder pressure depending upon the electric energy, and a controller including a pressure increase control device for increasing the brake cylinder pressure by controlling the electric motor, and a pressure reduction control device or reducing the brake cylinder pressure by controlling the electric energy applied to the control valve.

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