US 12,084,032 B2 · Brake control valve arrangement

Abstract

A brake control valve arrangement for controlling application of a braking force includes an electro-pneumatic brake control valve block including a hold valve and a vent valve (PRESSURE CONTROLLER), a main regulator valve (RELAY VALVE) and an emergency and a variable load control pressure regulator. The valve block has an inlet for a brake supply pressure, and an outlet in pneumatic connection with a brake cylinder. A pilot pressure into the main regulator valve from the variable load control pressure regulator is controlled by a remote release solenoid valve (CONTROL CHAMBER VENT MAGNET VALVE). The remote release solenoid valve adapted to vent brake cylinder pressure to atmosphere when de-energized thereby enabling release of the wheel braking force via the main regulator valve.

Claims19

Dependent claims

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.

1 more element

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 hold valve and a 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,
wherein the arrangement further comprises an inlet for an indirect brake pressure which is connected to a double check valve located in the pneumatic path between the solenoid and the main relay regulator valve, wherein, when the solenoid is de-energised, the main relay regulator valve receives the indirect brake pressure via the double check valve.

2 more elements

Dependencies are inferred from the claim text.

Brake control valve arrangement

Life of this patent

Brake control valve arrangement

Life of this patent

Abstract

Claims19