Robert Boschgmbh

Martin Moehle

Wolf-Dieter Jonner

Karl-Heinz Willmann

Elmar Mueller

Roland Holzmann

Hans-Juergen Herderich

Helmut Pueschel

Thomas Isella

Rolf Hummel

Johann Herr

Guenter Dzierzawa

Norbert Alaze

Guenther Schmidt

Guenter Krenz

Arnold Pahl

Erika Mank

The invention relates to a hydraulic vehicle brake system with a master cylinder, with two brake circuits (I, II), with wheel brakes connected to the brake circuits (I, II), and with a wheel slip regulator device disposed between the master cylinder and the wheel brakes, which device has at least one brake pressure modulation valve device and at least one high pressure pump, and with a pump unit associated with this high pressure pump. In the automatic braking operation by means of at least one of the high pressure pumps, the pump unit is used for supplying hydraulic fluid to the high pressure pump. The pump unit has a low pressure pump in the form of a gear pump. To limit the pressure at an outlet of the low pressure pump at least one return flow conduit is provided between this outlet and an inlet, which conduit, in a manner according to the invention constitutes a throttle by which the choice of its cross section, which throttle is for controlling at least one return flow which increases with increasing pressure at the outlet and as a result achieves the pressure limiting. The hydraulic vehicle brake system can be used for cars, minibuses, and small trucks.

Hydraulic vehicle brake system with wheel slip regulator device

Vehicle hydraulic brake system

This invention is directed to a connection between a magnet valve and a housing block. The housing block has a receiving bore, which as the bore depth increases changes the bore into an undercut. A valve body portion has a shape adapted to the undercut, leaving open a continuous encompassing gap of constant width with respect to the undercut. A housing jacket that fits over the coil of the magnet valve is press-fitted into the gap. The jacket is longitudinally slit to form tongues whose ends undergo deformation in the undercut. The form-fitting connection is usable for instance in the hydraulic unit of anti-lock vehicle brake systems.

Form-fitting connection of a magnet valve to a housing block

Growing community of inventors

Steinheim, Germany

Martin Moehle