A pneumatic brake booster in which, for improving the sealing and simplifying the assembly of sealing elements, it is proposed that the booster housing in the bearing region of at least one sealing element has a metal coating having a surface roughness Ra>1.2.

A pneumatic brake booster in which, for improving the sealing and simplifying the assembly of sealing elements, it is proposed that the booster housing in the bearing region of at least one sealing element has a metal coating having a surface roughness Ra>1.2.

An exemplary brake booster device includes, among other things, a brake booster mounted on a vehicle component, and an actuator that, in response to a force applied to the actuator by a gearbox housing, pivots to move the brake booster upward. The actuator includes at least two pivot elements spaced from each other, and a displacement mounted in a jointed manner between the at least two pivot elements.

A brake booster is mounted on a forward bulkhead of a motor vehicle having two elements, a first element being securely connected to the brake booster whilst a second element is securely connected to the bulkhead. The two elements are restrained against vertical movement relative to one another by at least one connector which is deformed or fails upon a movement of the brake booster upward relative to the bulkhead. An actuator is movably mounted to the bulkhead below the brake booster and rearward of a gearbox housing such that rearward movement of the gearbox housing during a frontal collision presses against the actuator and moves the actuator upward to apply pressure to the brake booster, the pressure causing the brake booster to move upward relative to the bulkhead.

A pneumatic brake booster in which, for improving the sealing and simplifying the assembly of sealing elements, it is proposed that the booster housing in the bearing region of at least one sealing element has a metal coating having a surface roughness Ra>1.2.

A pneumatic brake booster in which, for improving the sealing and simplifying the assembly of sealing elements, it is proposed that the booster housing in the bearing region of at least one sealing element has a metal coating having a surface roughness Ra>1.2.

A pneumatic brake booster for a hydraulic motor-vehicle brake system, including a booster housing, having a front and a rear housing shell, and at least one connecting pin, which is arranged in the booster housing such that the at least one connecting pin extends axially parallel to the center axis and which supports the booster housing from the inside by two supporting formations and which protrudes through the booster housing from the inside to the outside on at least one side by an end segment. In order to ensure simple intermediate handling of the brake booster before and during the assembly of the brake system and to improve the durability and corrosion resistance, the housing shells are arranged in such a way that the housing shells are each connected to the connecting pin such that the housing shells are secured against being axially moved apart from each other.

The invention relates to a motor vehicle vacuum pump having a pump housing surface, on which a noise absorption cap is mounted, said cap defining a noise damping volume.

The invention relates to a motor vehicle vacuum pump having a pump housing surface, on which a noise absorption cap is mounted, said cap defining a noise damping volume.

The present invention addresses the problem of standardizing a front shell of a booster shell of a negative pressure-type booster device by modifying the shape of a reinforcement rib provided to the front shell so as to satisfy the demand for varying the installation pitch and installation angle of tie-rod holes with one and the same front shell. A front shell configuring a booster shell of a negative pressure-type booster device in combination with a rear shell includes a reinforcement rib formed by bending the shells, wherein the reinforcement rib is formed along a virtual ellipse of which the center is located at the center of the front shell, with the major axes of the ellipse disposed on a line connecting the centers of two tie-rod holes provided in the front shell.