A vehicle brake circuit comprising a brake actuator (14), a first manually operable valve (6), a second electrically operable valve (4) and a fluid reservoir (16) for the supply of fluid to the actuator. The first valve is connected to the fluid reservoir ...

A method of detecting an accumulator failure is provided. The method may comprise measuring a first pressure on a gas-side (106) of an accumulator (102), measuring a second pressure on a fluid-side (112) of the accumulator (102), finding a difference betwe...

An automatic braking system for a vehicle is disclosed and includes an electronic brake system capable of applying wheel brakes to decelerate the vehicle and a controller. The controller includes instructions for maintaining the electronic brake system in ...

A vehicle brake control system includes a clutch stroke acquiring section, a braking force holding section, a first release determination section, and a release execution section. The clutch stroke acquiring section acquires a clutch stroke. The braking fo...

Provided is a brake control device which can perform both an interlocking brake control and an antilock brake control, and can perform the anti-lock brake control even when a voltage of electric power supplied to an electrically-operated pump is lowered. I...

A valve (10) for controlling an emergency brake system on an aircraft. The valve has separate poppets (38, 58) for controlling the flow of fluid from a supply line (16) to the brake cylinders and from the brake cylinders to a tank return line (20). The pop...

In a metal bellows accumulator, a metallic bellows unit is disposed within a pressure space defined in a main shell, and one end of the metallic bellows unit is fixedly secured to one end wall of the main shell. The metallic bellows unit sections the press...

A method and apparatus for safely braking a vehicle using a brake system under control of a controller (12). The system includes a parallel system of an electronic brake system for applying the brake and a mechanical brake system for controlling the brake....

A hydraulic pressure control device is provided in which a proportional pressure control valve (20) is actuated by operating the brake pedal (11) to adjust the hydraulic pressure supplied from a pressure source to the wheel brakes to a value corresponding ...

The braking system which has a hydraulic fluid pressure source and tandem brake valve (32) with flow regulating parts (34, 36) is designed with a first brake circuit and a first hydraulic line (44) between this and the first flow regulating part of the tan...