US 6,663,193 B1Granted

Relay valve based accelerated brake pipe application and release system

AssigneeWestinghouse Air Brake Technologies Corporation

InventorsJohn P. Condrasky, James A. Wood

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Abstract

A relay valve based accelerated brake pipe application and release system having an electronic control module. A source of fluid pressure is connected to a valve device for receiving and transmitting fluid pressure signals. The valve device is connected to an exhaust to atmosphere. An accelerator volume has a fluid connection to the valve device for storing a predetermined volume of fluid. A brake pipe transducer is electronically connected to the control module and has a fluid connection to the valve device for transmitting a first pressure signal to the control module. A cut-out solenoid valve is electronically connected to the control module and includes a fluid connection to the brake pipe transducer for receiving at least one of a cut-in and a cut-out signal. An emergency solenoid valve is electronically connected to the control module and has a fluid connection to the cut-out solenoid valve for receiving an emergency signal. A cut-out device is included for opening and closing a fluid connection and it has a fluid connection to the emergency solenoid valve. An application solenoid valve is electronically connected to the control module and has a fluid connection to the cut-out solenoid valve for receiving an apply signal and for transmitting a pilot pressure to the cut-out solenoid valve. A release solenoid valve is electronically connected to the control module and has a fluid connection to the cut-out device for receiving a release signal.

Claims20

Dependent claims

A relay valve based accelerated brake pipe application and release system, said application and release system comprising:

(a) an electronic control module;
(b) a source of fluid pressure;
(c) a valve means connected to said source of fluid pressure for receiving and transmitting fluid pressure signals, said valve means having a fluid connection to an exhaust to atmosphere;
(d) an accelerator volume having a predetermined volume and having a fluid connection to said valve means for storing said predetermined volume of fluid;
(e) a brake pipe transducer electronically connected to said control module and having a fluid connection to said valve means for transmitting a first pressure signal to said control module;
(f) a cut-out solenoid valve electronically connected to said control module and having a fluid connection to said brake pipe transducer for receiving at least one of a cut-in and a cut-out signal;
(g) an emergency solenoid valve electronically connected to said control module and having a fluid connection to said cut-out solenoid valve for receiving an emergency signal;
(h) a cut-out means having a fluid connection to said emergency solenoid valve for opening and closing a fluid connection;
(i) an application solenoid valve electronically connected to said control module and having a fluid connection to said cut-out solenoid valve for receiving an apply signal and transmitting a pilot pressure to said cut-out solenoid valve;
(j) a release solenoid valve electronically connected to said control module and a including a fluid connection to said cut-out means for receiving a release signal and transmitting a pilot pressure to said application solenoid;
and
(k) a control transducer electronically connected to said control module and including a fluid connection to said release solenoid valve for transmitting a second pressure signal to said control module.

9 more elements

Dependencies are inferred from the claim text.