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US 6,318,811 B1Granted
Brake control unit with redundancy
AssigneeNew York Air Brake Corporation
InventorsKevin B. Root, Ronald O. Newton, Premal Desai
Life of this patent
Estimating the term…
Abstract
A brake control unit having a brake cylinder valve (62), equalization reservoir valve (82), brake signal valve (89), and brake back-up valve (182).
Claims17
A brake control unit comprising:
- a brake pipe valve controlling pressure at a brake pipe port in response to pressure at an equalization reservoir port;
- a brake cylinder valve controlling pressure at a brake cylinder port in response to a brake signal;
- an equalization reservoir valve controlling pressure at said equalization reservoir port;
- a brake signal valve providing pneumatic primary brake signals;
- a back-up brake valve providing pneumatic back-up brake signals in response to pressure at said brake pipe port;
- and
- a controller selectively connecting said primary or said back-up brake signals to said brake cylinder valve and selectively controlling said equalization reservoir port with said equalization reservoir valve or said primary brake signal.
4 more elements
A brake control unit comprising:
- a brake pipe valve controlling pressure at a brake pipe port in response to an input signal;
- a brake cylinder valve controlling pressure at a brake cylinder port in response to a brake signal;
- a brake pipe signal valve providing pneumatic brake pipe signals;
- a brake signal valve providing pneumatic primary brake signals;
- a back-up brake valve providing pneumatic back-up brake signals in response to pressure at said brake pipe port;
- and
- a controller selectively connecting said brake pipe signal or said primary brake signal to said brake pipe valve as said input signal and selectively connecting said primary or said back-up brake signals to said brake cylinder valve as said brake signal.
4 more elements
A brake control unit comprising:
- an electropneumatic brake pipe valve controlling pressure at a brake pipe port;
- a pneumatic vent valve venting a brake pipe port in response to pneumatic input signals;
- a first electropneumatic vent signal valve providing first pneumatic input signals to said vent valve;
- a second electropneumatic vent signal valve providing second pneumatic input signals to said vent valve;
- a local brake pipe controller monitoring said brake pipe port and controlling said brake pipe valve and said first vent signal valve;
- and
- a central controller controlling said second vent signal valve.
4 more elements
Dependencies are inferred from the claim text.