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Method for limiting brake cylinder pressure on locomotives equipped with distributive power and electronic brake systems

  • US 5,934,764 A
  • Filed: 08/05/1997
  • Issued: 08/10/1999
  • Est. Priority Date: 08/05/1997
  • Status: Expired due to Term
First Claim
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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.

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