Method for limiting brake cylinder pressure on locomotives equipped with distributive power and electronic brake systems
First Claim
1. Apparatus for limiting brake cylinder pressure in emergency braking of a locomotive consist connected to a train of railway cars, said apparatus comprising:
- a manifold device connected to a reservoir of pressurized fluid for operating pneumatic brakes of such locomotive consist, a first magnet valve connected to said manifold device for supplying fluid pressure from said device to a brake actuating pipe when an operating coil of said first magnet valve is energized,a second magnet valve connected to said manifold device for supplying fluid pressure from said reservoir to a pressure regulator when an operating coil of said second magnet valve is energized, said pressure regulator connecting an independent application and release pipe to said manifold device, anda relay connected to receive an emergency brake signal and conduct emergency power to operating coils of said first and second valves whereby fluid pressure is supplied to such brake actuating pipe and to said pressure regulator from said manifold device,said pressure regulator providing said independent application and release pipe with a fluid pressure preset to a predetermined value by said pressure regulator.
4 Assignments
0 Petitions
Accused Products
Abstract
Method and apparatus for limiting brake cylinder pressure in emergency braking of a locomotive consist connected to a train of railway cars. The apparatus includes a manifold device connected to a reservoir of pressurized fluid for operating pneumatic brakes of the locomotive consist. A first magnet valve is connected to the manifold device for supplying fluid pressure from such device to a brake actuating pipe when an operating coil of the first magnet valve is energized. A second magnet valve having an operating coil is connected to the manifold device for supplying fluid pressure from the reservoir to an adjustable pressure regulator connecting an independent application and release pipe to the manifold device. A relay is connected to receive an emergency brake signal and conduct emergency power to the operating coils of the first and second valves whereby fluid pressure is supplied to the brake actuating pipe and to the adjustable pressure regulator from the manifold device. The adjustable pressure regulator provides the independent and release pipe with a fluid pressure preset to a predetermined value by the adjustable pressure regulator.
-
Citations
13 Claims
-
1. Apparatus for limiting brake cylinder pressure in emergency braking of a locomotive consist connected to a train of railway cars, said apparatus comprising:
-
a manifold device connected to a reservoir of pressurized fluid for operating pneumatic brakes of such locomotive consist, a first magnet valve connected to said manifold device for supplying fluid pressure from said device to a brake actuating pipe when an operating coil of said first magnet valve is energized, a second magnet valve connected to said manifold device for supplying fluid pressure from said reservoir to a pressure regulator when an operating coil of said second magnet valve is energized, said pressure regulator connecting an independent application and release pipe to said manifold device, and a relay connected to receive an emergency brake signal and conduct emergency power to operating coils of said first and second valves whereby fluid pressure is supplied to such brake actuating pipe and to said pressure regulator from said manifold device, said pressure regulator providing said independent application and release pipe with a fluid pressure preset to a predetermined value by said pressure regulator. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. Apparatus for limiting brake cylinder pressure in emergency braking of a locomotive consist that includes at least one locomotive located at a forward end of a train and at least one locomotive being at a location remote from such one locomotive, with one of such locomotives being equipped to remotely and electronically control brakes of such other locomotive by signals transmitted from such controlling locomotive to such other locomotive, said apparatus comprising:
-
a manifold device connected to a reservoir of pressurized fluid for operating pneumatic brakes of such locomotive consist, a first magnet valve connected to said manifold device for supplying fluid pressure from said device to a brake actuating pipe when an operating coil of such first magnet valve is energized, a second magnet valve connected to said manifold device for supplying fluid pressure from such reservoir to a pressure regulator when an operating coil of said second magnet valve is energized, said pressure regulator connecting an independent application and release pipe to said manifold device, and a relay connected to receive an emergency brake signal and conduct emergency power to operating coils of said first and second valves whereby fluid pressure is supplied to such brake actuating pipe and to said pressure regulator from said manifold device, said pressure regulator providing the independent application and release pipe with a fluid pressure preset to a predetermined value by said pressure regulator. - View Dependent Claims (8)
-
-
9. A method of limiting emergency brake cylinder pressure in a locomotive equipped with distributed power control and electronically initiated brake control systems, the method comprising:
-
using a manifold device to pressurize a brake actuating pipe and a pressure regulator from a main reservoir of pressurized fluid via operation of magnet valves, using a relay connected in electrical series between a portion of said electronically initiated brake control system and respective operating coils of said magnet valves for operating said valves when said relay receives an emergency signal from said distributed power control system, and using said pressure regulator to pressurize an independent application and release pipe connected to said regulator until said independent application and release pipe is pressurized to a preset pressure value provided by said regulator. - View Dependent Claims (10, 11, 12, 13)
-
Specification