Robert Boschgmbh

Guenter Krenz

Ernst-Dieter Schaefer

Rolf Hummel

Heinz Siegel

Arnold Pahl

Erika Mank

Norbert Alaze

Wolfgang Schuller

Wolf-Dieter Jonner

Karl-Heinz Willmann

Guenther Schmidt

Elmar Mueller

Roland Holzmann

Hans-Juergen Herderich

Helmut Pueschel

Thomas Isella

Steffen Schneider

Rolf Stotz

Wolf-Ingo Ratzel

Bernd Beiermeister

Michael Klose

Martin Moehle

Gerold Kohlberger

Johann Herr

Zdenek Frcek

Vaclav Straus

Dirk Merbold

Guenter Dzierzawa

Alexander Ziegler

Bjoern Billep

Hans Feeser

Bjoern Billepp

An injection-molded part according to the invention has at least one thermoplastic inlay part and one thermoplastic composite element injection-molded onto the inlay part. The at least one inlay part on its boundary face with the composite element has at least one raised feature for material-locking sealing between the inlay part and the composite element. The raised feature protrudes with a height Hinto the composite element and forms a narrowed cross section in the composite element having a height H. The at least one raised feature, on its flux leading end, has a first chamfer, and the ratio of the height of the narrowed cross section to the height of the raised feature is in the range between 0.6 and 0.9.

Multi-component injection-molded part with material-locking sealing

The brake system has at least one brake circuit (I), in which a high-pressure pump is disposed. A self-aspirating charge pump is also provided, which is connected at least indirectly to the intake side of the high-pressure pump by an intake line of a supply container for brake fluid and by a pressure line. In the event of an inadequate supply of brake fluid by the charge pump, the pumping of air into the brake circuit (I) is intended to be precluded. To that end, a siphon is disposed in the intake line of the charge pump. Air aspirated by the siphon suddenly prevents pumping by the charge pump. The brake system is intended for use in motor vehicles with slip control or for automatic brakes.

Hydraulic brake system for motor vehicles

Vehicle hydraulic brake system

Reciprocating piston pump with radial cylinders based by a wire hoop

The present invention relates to an eccentric arrangement for a reciprocating piston pump, having a drive shaft drivable by a drive device, an eccentric part of a rubber-elastically deformable material is disposed on the drive shaft in a manner fixed against relative rotation. A bearing ring is provided on an outer circumferential surface of the eccentric part, by which ring a reciprocating piston is displaceable driven substantially perpendicular to the drive shaft. To avoid stroke losses, first and second support faces are provided on the drive shaft which the eccentric part disposed between them in such a way that the eccentric part rests with its axial ends on the first and second support faces.

Eccentric arrangement for a reciprocating piston pump

An oscillation damper that has a cup-shaped elastomer diaphragm body, with a bottom diaphragm. The diaphragm body is received tightly on an opening side in a bore of a housing, and fits around a protrusion of a closure body that closes the bore. Between the closure body and the diaphragm, a support body having an end face that is concave toward the diaphragm is received in the diaphragm body. A void formed between the diaphragm and the support body communicates with the atmosphere, through a conduit embodied on the support body and through an opening in the closure body. The oscillation damper can be used in hydraulic slip-controlled motor vehicle brake systems.

Damper for damping fluid oscillations in a hydraulic, slip-controlled

The invention seeks to reduce structure-borne sound emissions of the reciprocating piston pump. The reciprocating pump is includes an outlet valve, which has a valve seat and a valve closing body that is received in a hollow space and is loaded by a closing spring. One outlet bore radially originates at the circumferential region of the valve seat and branches off from the hollow space. The opening of the outlet bore toward the hollow space extends at least approximately between the valve seat and the end toward the closing spring of the gap of least cross section, which is formed between the valve closing body and the inside circumference of the hollow space. As a result, a slowed opening motion of the valve closing element is attained, in which opening motion an opening gap opens up that has its largest flow cross section in the region of the outlet bore. The supply flow, which increases slowly as the outlet valve opens, results in a slowed force variation speed in the drive train of the reciprocating piston pump and a reduced emission of structure-borne sound. The pressure fluid pumping device may be used for instance in hydraulic motor vehicle brake systems having an anti-skid system and/or traction control system.

Pressure fluid pumping device with a reciprocating piston pump

Growing community of inventors

Steinheim, Germany

Guenter Krenz