Fluid-pressure and analogous brake systems – Multiple control – Fluid and electric
Patent
1988-10-03
1990-02-27
Kashnikow, Andres
Fluid-pressure and analogous brake systems
Multiple control
Fluid and electric
303 20, 303 61, 303DIG3, B60T 1514, B60T 1368, B60T 1558
Patent
active
049040278
ABSTRACT:
A pneumatic pressure control arrangement for controlling the brakes of railway vehicles. A manual brake command controller converts a selected brake position into a corresponding electrical signal. An application magnet valve is connectable to a source of air pressure and to a storage device. A release magnet valve is connectable to atmosphere and to the storage device. An electropneumatic transducer senses the pressure in the storage device and provides a feedback signal. A microprocessor receives and compares the electrical signal with the feedback signal to develop an error signal which initially energizes the application magnet valve and the release magnet valve upon request of braking effort, and which subsequently pulses the application magnet valve when the pressure in the storage device is within a preselected control range, and which finally deenergizes the application magnet valve when the pressure in the storage device is within a preselected deadband range to cause a lap condition.
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Sanders Walter J.
Skantar Elmer T.
American Standard Inc.
Kashnikow Andres
Newholm Timothy
Sotak J. B.
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