A computer controlled brake that can selectively operate the 13 control portion exhaust magnet valve to couple the 13 pipe to atmosphere and the 20 control portion lead/trail magnet valve to pressurize the 20 pipe pressure of a trail locomotive in response to consist swap mode enabled while switching ends of a locomotive consist. The computer controlled brake is also configured to operate 13 control portion exhaust magnet valve to disconnect the source of 13 pipe pressure from atmosphere and to de-energize 20 control portion lead/trail magnet valve to stop pressurizing the source of 20 pipe pressure in response to sensing a rise in brake pipe from a newly established lead locomotive disabling consist swap mode.

An expansion chamber for a rotary vane vacuum pump is provided. The expansion chamber is in fluid communication with the discharge side of the rotary vane vacuum pump, such that the expansion chamber attenuates sound as a Helmholtz resonator. The expansion chamber includes an internal volume of between 80 cubic centimeters and 100 cubic centimeters, inclusive, and includes a curved sidewall that extends partially around, and generally conforms to, the exterior of the rotary vane vacuum pump. The expansion chamber also includes a downward extending port, open to the atmosphere, for attachment to a hose in applications in which the expansion chamber is below a water line.

Disclosed is reservoir assembly for a brake system. The reservoir assembly for a brake system storing brake oil to supply the brake oil to a master cylinder, the reservoir assembly comprising: a first reservoir tank coupled to the master cylinder and having a first connection port at an upper portion; a second reservoir tank provided to be spaced apart from the top portion of the first reservoir tank at a predetermined interval and having an oil inlet at one side and a second connection port at the other side; and a connection member connecting the first connection port with the second connection port to transfer the brake oil from the second reservoir tank to the first reservoir tank.

The invention relates to a brake fluid container for a master cylinder in a hydraulic brake system. A safety valve is provided to ensure that the neck of the brake fluid container closes when the brake fluid container is detached from the master cylinder, for example in case of an accident. The safety valve is disposed in a cartridge which can be inserted from outside in a tightly sealing manner into the neck of the container.

The invention relates to a brake fluid container for a master cylinder in a hydraulic brake system. A safety valve is provided to ensure that the neck of the brake fluid container closes when the brake fluid container is detached from the master cylinder, for example in case of an accident. The safety valve is disposed in a cartridge which can be inserted from outside in a tightly sealing manner into the neck of the container.

A trailer brake system including: a spring brake, configured to apply a braking force to an associated wheel when a pressure in its brake chamber is below a threshold, and a service brake, configured to apply a demanded braking force dependent on a pressure present in its brake chamber, a master unit and an auxiliary unit, and a first fluid tank and a second fluid tank, wherein the first fluid tank is filled by a supply line and connects to an inlet of the master unit and the second fluid tank is filled by the supply line and connects to an inlet of the auxiliary unit.

A trailer brake system including: a spring brake, configured to apply a braking force to an associated wheel when a pressure in its brake chamber is below a threshold, and a service brake, configured to apply a demanded braking force dependent on a pressure present in its brake chamber, a master unit and an auxiliary unit, and a first fluid tank and a second fluid tank, wherein the first fluid tank is filled by a supply line and connects to an inlet of the master unit and the second fluid tank is filled by the supply line and connects to an inlet of the auxiliary unit.

A front-mounted type reservoir assembly installed on a front of a hydraulic block of an integrated brake system may include a main reservoir tank provided with a main reservoir chamber in which brake oil is stored, and provided with a plurality of oil ports through which the brake oil flows in and out on a first surface facing the front of the hydraulic block, wherein the plurality of oil ports includes a first oil port, a second oil port and a third oil port, and the third oil port is disposed at a position lower than the first oil port and the second oil port on the first surface.

A front-mounted type reservoir assembly installed on a front of a hydraulic block of an integrated brake system may include a main reservoir tank provided with a main reservoir chamber in which brake oil is stored, and provided with a plurality of oil ports through which the brake oil flows in and out on a first surface facing the front of the hydraulic block, wherein the plurality of oil ports includes a first oil port, a second oil port and a third oil port, and the third oil port is disposed at a position lower than the first oil port and the second oil port on the first surface.

A vehicle brake arrangement includes: a reservoir tank mounted on an upper side of a master cylinder; and a guide member provided on a front end surface of the master cylinder, wherein the reservoir tank has an overextending portion extending forward beyond the master cylinder, and the guide member includes a fixed portion fixed to the master cylinder, and an extending portion extending forward from the fixed portion and overlapping in a vehicle up-down direction with the overextending portion.