Robert Boschgmbh

Franz Mayer

Wolfgang Schuller

Dietmar Kratzer

Andreas Weh

Norbert Alaze

Edgar Kurz

Anton Paweletz

Klaus-Peter Schmoll

Bernd Lutz

Klaus Heyer

Michael Hellebrandt

Manfred Hauser

Horst Beling

Siegfried Fritsch

Dieter Merklein

Ralf Zitzelsberger

Tobias Fluck

Guenter Escher

Johannes Schmid

Ben Ferguson

Ignaz Hatt

Walter Kremsreiter

Julius Bayrhof

Michael Specker

Bernd Allenzon

Joerg Zielke

Joachim Evertz

Tim Maier

Gerhard Stransky

Alice Schacherl

Roland Heller

Christiane Schiller

Peter Rues

Stefan Achilles

Hermann Bamberger

A pump device, in particular for a brake system of a motor vehicle, includes two hydraulic chambers, a linear drive, and a pump piston. Each of the chambers has at least two fluid connections. The pump piston interacts with the chambers. The linear drive is embodied as a reluctance drive and includes a longitudinally movable armature, a housing-fastened stator that is configured to receive current, and at least one spring element. The at least one spring element is associated with the armature, and is configured to counteract a drive force of the reluctance drive. The armature is connected to the pump piston.

Pump device for a brake system with a reluctance drive

A device for controlling a volumetric flow rate of a medium stored under pressure in order to activate an impact protection device, having a control module that includes a valve body having a stepped through-opening, and a control piston guided axially in the through-opening of the valve body, and a control valve that influences the movement of the control piston, the valve body having at a first end a closable medium inlet opening having a valve chamber. The control valve and the control module are situated in a common housing sleeve, the valve body of the control module being pressed into a first end of the housing sleeve until it comes to a stop on a housing shoulder, and the control valve being introduced into and fixed in a second end of the housing sleeve.

Device for controlling a volumetric flow rate of a medium stored under pressure in order to activate an impact protection device, and device for activating an impact protection device

A valve of an accumulator device, which is formed by an accumulator cylinder and an accumulator piston guided therein, includes a valve sealing body. The valve sealing body is configured to selectively open and close a valve opening at a valve seat. The valve also includes an opening mechanism configured to selectively raise the valve sealing body from the valve seat. The opening mechanism is held by a spring element, and the spring element is formed by a punched and bent part.

Valve of a storage device having a spring element

An electromagnetically actuated valve has a sleeve which receives magnetically operative elements, such as an armature and a magnet core. The sleeve is provided with a radially outward-oriented, encompassing widened portion in the form of a flange having flat wall portions which extend transversely to the longitudinal axis of the valve and rest on one another essentially without an interstice between them. The flange is braced on a shoulder of a valve block bore and is hydraulically tightly gripped by material positively displaced from the bore circumference. The flange is the sole securing means for the fluid-carrying part of the valve, which part comprises the sleeve, armature and magnet core.

Valve, especially for slip-controlled hydraulic brake systems installed in motor vehicles

The invention is directed to a piston pump for a hydraulic vehicle brake system. For simple and inexpensive manufacturability, the piston pump embodies an outlet conduit as a groove in a sleeve bottom and a sealing part. As a result, the sleeve and the sealing part can be manufactured in a non-cutting manner by means of forming. Another advantage of letting the outflow conduit into the sleeve bottom is that the outlet conduit is disposed a small distance in the axial direction from a valve seat of an outlet valve, which counteracts noise production.

Piston pump including an easily produced flow conduit

The invention relates to a piston pump for a slip-controlled, hydraulic vehicle brake system. In order to be able to simply and inexpensively produce the piston pump as a stepped piston pump, the invention embodies a piston as a tubular deep drawn part made of sheet metal, with an outwardly protruding circumferential bead. The bead is produced by axially compressing the piston. The bead constitutes an axial support for a guide ring and sealing ring placed onto the piston. A disk-shaped, abrasion resistant striking piece is press-fitted into an open end of the tubular piston, and is used by the piston for resting against a circumference of a cam element used for the stroke drive.

Piston pump

Growing community of inventors

Haldenwang, Germany

Franz Mayer