A retarding control assembly for a brake valve may include a bleed line configured for arrangement between a spring chamber of a brake command assembly and a tank line. The bleed line may include a check valve configured to allow fluid flow from the spring chamber to the tank and a check valve bypass configured to allow fluid flow from the tank line to the spring chamber passed the check valve and defining a restricted pathway.

In order to test a function in a pressure generating module of a hydraulic vehicle power brake system, it is provided to generate a brake pressure using a power brake pressure generator and subsequently hydraulically to separate a pressure regulating module from the pressure generating module by closing connection valves or hydraulically to separate wheel brakes from the pressure generating module by closing inlet valves, so that no brake fluid flows into the wheel brakes during the function test, which would reduce the brake pressure in the pressure generating module and negatively affect or prevent the function test.

A container for exchanging fluids using pressurized air has a cylindrical tank with caps and seals at the tank's opposite ends. Grooves in the caps hold the seals, and the caps move between unsealed and sealed arrangements using a tie rod engaging threaded bores in the caps. When sealed, the seals are radially compressed between the flange and the tank's interior sidewall. The tie rod connects to threaded bores at the caps' centers. Rotating the caps relative to the tank axially moves the caps between the sealed and unsealed arrangements. The top cap has a fill port with a threaded plug. A process tube connects to either the outlet port for the fluid when the top cap has the outlet or the inlet port for the pressurized air when the bottom cap has the inlet. A float valve connects to the process tube's end for fluid flowing through the outlet.

A method for checking functionality of a motor vehicle braking system. The braking system has a main module, including: hydraulically actuatable wheel brakes, pairs being assigned to respective brake circuits; at least one electrically actuatable wheel valve per wheel brake sets wheel-specific brake pressures; a pressure provision device actively builds up pressure in the wheel brakes; a pressure-medium reservoir at atmospheric pressure, and an auxiliary module, which has for each of two wheel brakes: a pressure sensor for measuring pressure in a wheel brake line; an open when deenergized isolating valve in the wheel brake line; a pump. At least one variable is measured to assess functionality of the braking system. Using least one acceptance criterion, and checked whether the variable satisfies the acceptance criterion. Determining at least one variable representing the viscosity of the brake fluid, and the at least one acceptance criterion depends on a variable representing viscosity.

A hydraulic system for a brake release device has a pump device, a tank, a valve assembly and at least one working port, where the working port is connectable to the tank or the pump device via the valve assembly. The pump device is switchable between an operating mode and a shutdown mode, where the valve assembly connects the working port to the tank in the shutdown mode and the valve assembly is only hydraulically operable. A brake release device having such a hydraulic system is also disclosed.

A brake fluid feeding device includes a fluid container, a cap, and an inflator. The cap is assembled on the fluid container. The cap has a first hole and a second hole opened thereon. A gas inlet hose is connected to the first hole and extending outward. A fluid-supplying hose is connected to the second hole. The inflator has a gas-supplying portion for gas output. One end of the gas inlet hose is detachably connected to the gas-supplying portion. When the gas inlet hose is connected to the gas-supplying portion, the gas output from the gas-supplying portion enters into the fluid container via the gas inlet hose. Accordingly, the brake fluid feeding device has a simple structure and can be operated conveniently.

A pressure medium container for a hydraulic motor vehicle brake system. A pressure medium container is provided including a container casing the interior of which can be filled with a pressure medium via a filler pipe and is closed off by a closure cap fixed to the filler pipe. A sealing element made from an elastomeric material is provided between the filler pipe and a bottom of the closure cap. The sealing element has a valve which rests on a support pedestal arranged on the closure cap is closed in a non-actuated initial state and reaches an opened actuated state under the control of differential pressure, whereby a pressure is equalized between an interior of the pressure medium container and an ambient atmosphere. Direction-dependently, the valve has different valve opening resistances.

Main technical features of a sealing mechanism of a pressure vessel provided by the invention are a sealing unit for airtightly combining with the vessel, and a combination unit for positioning the sealing unit in the airtight combination state, and there are common structures disposed between constituent elements of the sealing unit and the combination unit, so that the sealing unit and the combination unit can be combined with each other in order to facilitate use and storage and to avoid losing or missing parts.

Master cylinder assemblies, particularly for operation of the brake or clutch of motorcycles or other ATVs, are susceptible to a reduction in pressure due to the introduction of unwanted gases within the hydraulic lines. As a result, the brake or clutch system may not operate as designed. The present disclosure describes master cylinder assemblies that include one or more fluid separators, with a separator at least at the compensating port of the fluid reservoir to inhibit or prevent air or other gases from entering the piston channel through the compensating or inlet ports.

A retarding control assembly for a brake valve may include a bleed line configured for arrangement between a spring chamber of a brake command assembly and a tank line. The bleed line may include a check valve configured to allow fluid flow from the spring chamber to the tank and a check valve bypass configured to allow fluid flow from the tank line to the spring chamber passed the check valve and defining a restricted pathway.