A brake-actuating device for a vehicle brake system comprises a fluid reservoir and a master cylinder arrangement. The fluid reservoir has an outlet connection, and the master cylinder arrangement has an inlet connection. The outlet connection of the fluid reservoir and the inlet connection of the master cylinder arrangement, in the connected-together state, define at least one axially overlapping connection region through which a fluid channel for the feed of fluid from the fluid reservoir into the master cylinder arrangement extends. Furthermore, the brake-actuating device comprises a sealing element, which is arranged in the connection region and seals off the latter to the outside, and a filter element for filtering the fluid to be fed to the master cylinder arrangement. The sealing element holds the filter element in a predetermined position in the fluid channel.

A vehicle braking system includes a primary system including at least one pneumatic brake pipe control valve, and a secondary back-up system configured to facilitate vehicle braking without human intervention. The secondary back-up system includes a first air reservoir coupled to supply pressurized air to the at least one pneumatic brake pipe control valve, a second air reservoir, a choke adapted to allow airflow at a specified airflow rate, and a solenoid valve adapted to selectively couple and decouple the first air reservoir and the second air reservoir via the choke, according to an energization state of the solenoid valve.

A dual input master cylinder, comprising a housing having a first input, a piston base positioned within the housing, and a piston rod having a first end and a second end, the first end of the piston rod abutting the piston base and the second end of the piston rod acting as a second input of the dual input master cylinder, wherein the piston rod is capable of being spaced apart from the piston base

A dual input master cylinder, comprising a housing having a first input, a piston base positioned within the housing, and a piston rod having a first end and a second end, the first end of the piston rod abutting the piston base and the second end of the piston rod acting as a second input of the dual input master cylinder, wherein the piston rod is capable of being spaced apart from the piston base

A multi-vessel reservoir assembly is provided. The multi-vessel reservoir assembly comprises a first fluid vessel, a second fluid vessel, and at least one linkage positioned between the first and second fluid vessels. The at least one linkage serves to maintain the first and second fluid vessels in fixed and spaced-apart relationship relative to one another. The first and second fluid vessels are independent and separately operable.

This device for collecting and supplying brake fluid has a gas-liquid separation tank divided into a lower chamber and an upper chamber with a partition wall interposed therebetween. Connected to the gas-liquid separation tank are: a collection line for collecting brake fluid from the brake system of a vehicle in the gas-liquid separation tank; a circulation line for extraction of brake fluid from the lower chamber and the return thereof to the lower chamber; and a replenishment line for replenishing the gas-liquid separation tank with fresh brake fluid. Air intake for the brake system is performed via a main intake line, and air intake for the gas-liquid separation tank is performed via an auxiliary intake line. Both the main intake line and auxiliary intake line are connected to an auxiliary tank.

This device for collecting and supplying brake fluid has a gas-liquid separation tank divided into a lower chamber and an upper chamber with a partition wall interposed therebetween. Connected to the gas-liquid separation tank are: a collection line for collecting brake fluid from the brake system of a vehicle in the gas-liquid separation tank; a circulation line for extraction of brake fluid from the lower chamber and the return thereof to the lower chamber; and a replenishment line for replenishing the gas-liquid separation tank with fresh brake fluid. Air intake for the brake system is performed via a main intake line, and air intake for the gas-liquid separation tank is performed via an auxiliary intake line. Both the main intake line and auxiliary intake line are connected to an auxiliary tank.

To test a vehicle power braking system, a piston of a power brake pressure generator is displaced twice for a pressure build-up and in between back preferably by a longer distance. Extension of the piston travel during the second displacement is an indication of air in a cylinder of the power brake pressure generator due to an excessively low brake fluid level in a brake fluid reservoir.

To test a vehicle power braking system, a piston of a power brake pressure generator is displaced twice for a pressure build-up and in between back preferably by a longer distance. Extension of the piston travel during the second displacement is an indication of air in a cylinder of the power brake pressure generator due to an excessively low brake fluid level in a brake fluid reservoir.

The present disclosure relates to a method for testing a brake fluid sensor of a vehicle braking system, wherein the brake fluid sensor can indicate the fluid level in the fluid reservoir, wherein the method has the following steps: (1) Altering the fluid level in at least one region of the at least one fluid reservoir by means of at least one braking force generating device; and (2) Detecting whether the at least one brake fluid sensor emits a signal indicating the modified fluid level in the at least one region of the at least one fluid reservoir.