US 12,084,032 B2
Brake control valve arrangement
Ben Druett, Melksham (GB); Mark Hemmings, Melksham (GB); Nigel Anstey, Melksham (GB); and Justin Peare, Melksham (GB)
Assigned to KNORR-BREMSE SYSTEME FÜR SCHIENENFAHRZEUGE GMBH, (DE)
Appl. No. 17/275,656
Filed by KNORR-BREMSE SYSTEME FÜR SCHIENENFAHRZEUGE GMBH, Munich (DE)
PCT Filed Sep. 11, 2019, PCT No. PCT/EP2019/074255
§ 371(c)(1), (2) Date Mar. 11, 2021,
PCT Pub. No. WO2020/053291, PCT Pub. Date Mar. 19, 2020.
Claims priority of application No. 18193591 (EP), filed on Sep. 11, 2018.
Prior Publication US 2022/0048486 A1, Feb. 17, 2022
Int. Cl. B60T 8/36 (2006.01); B60T 8/17 (2006.01); B60T 8/94 (2006.01); B60T 13/68 (2006.01); B60T 15/02 (2006.01); B60T 15/52 (2006.01); B60T 17/22 (2006.01)
CPC B60T 8/3605 (2013.01) [B60T 8/1705 (2013.01); B60T 8/94 (2013.01); B60T 13/683 (2013.01); B60T 15/027 (2013.01); B60T 15/52 (2013.01); B60T 17/221 (2013.01); B60T 17/228 (2013.01); B60T 2270/402 (2013.01); B60T 2270/406 (2013.01); B60T 2270/413 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A brake control valve arrangement for controlling application of a braking force in a rail vehicle, the arrangement comprising:
an electropneumatic brake control valve block that includes a main relay regulator valve controlling pressure to a downstream hold valve and a downstream vent valve for service brake application, the main relay regulator valve being piloted by a pressure controlled by an emergency regulator valve, the brake control valve arrangement further having a variable load control pressure regulator,
wherein the valve block has an inlet for a brake supply pressure, and an outlet in pneumatic connection with a brake cylinder for applying braking force,
wherein an electronic control unit is provided for controlling actuation of one or more solenoid valves controlling pneumatic flow in the arrangement, and
wherein a pilot pressure into the main relay regulator valve from the variable load control pressure regulator is controlled by a solenoid, which, when de-energised, enables release of the braking force by venting of brake cylinder pressure to atmosphere.