Robert Boschgmbh

Martin Oehler

Guenther Hohl

Norbert Mittwollen

Klaus Mueller

Hans-Juergen Herderich

Gunther Hohl

Kurt Herzog

Bernhard Heugle

Hans-Jurgen Herderich

Stephan Jonas

Rolf Nicodemus

Hans-Peter Huebner

Heike Bauer

Peggy Gruschwitz

Wolfgang Maisch

Dirk Hofmann

Guenter Wolff

Friedrich Megerle

Ralf Schindler

Norbert Mittelwollen

The invention relates to an electromagnetic device, in particular for a slip-controlled, hydraulic vehicle brake system, having at least a first magnet valve which is closed in its currentless basic position and having at least a second magnet valve which is open in its currentless basic position, the first and second magnet valves being received in receiving bores of a valve block. The invention provides that the first and second magnet valves have structurally identical, one-piece valve housings, in each of which all the magnet valve components are received essentially without any axial protrusion, and that the total length of each of the first and second magnet valves is recessed in the receiving bores of the valve block, and that a nonferromagnetic spacer ring is disposed between a face end, pointing toward the valve seat, of at least one magnet coil and a dividing plane between this magnet coil and the associated pole piece.

Electromagnetic device, especially for an anti-slip, hydraulic vehicle brake system

A solenoid valve useful in a slip-controlled hydraulic brake system of a motor vehicle, and which has a seat valve disposed between a pressure fluid inlet and a pressure fluid outlet and in the bypass to the seat valve has a check valve with a quad ring as a closing body and a circular ring surface as a valve seat. Circularly disposed pressure fluid openings adjoin the circular ring surface and are overlapped on the radial inside and on the radial outside by respective sealing lips of the annular rubber-elastic closing body, which is guided with axial motion play in relation to the circular ring surface.

Solenoid valve with a check valve

A solenoid valve useful in a slip-controlled hydraulic brake system of a motor vehicle, and which has a seat valve disposed between a pressure fluid inlet and a pressure fluid outlet and in the bypass to this seat valve, has a check valve with a hollow conical valve seat and a closing body, which has a section that is embodied as complementary to the hollow conical valve seat. A rubber-elastic sealing ring is accommodated with the greater portion of its cross section in the circumference of the section and in the closed position of the check valve, this sealing ring can compensate for dimensional deviations of the valve seat at low pressures.

Magnet valve with pressure limitation for slip-controlled motor vehicle

Electromagnetically actuated valve for slip-controlled hydraulic brake

Electromagnetically actuated valve, in particular for slip-controlled

Electromagetically actuated valve for slip-controlled hydraulic brake

[The aim is to] A solenoid valve which achieves a setting of a reduced flow area which is active after a closed position of the valve is disclosed. The solenoid valve has a seat valve in a valve chamber. A magnet armature for actuating the seat valve is provided on its end face remote from the seat valve with an axially expandable hollow part whose interior, acting as a control chamber, is connected to a valve sub chamber through a pressure fluid channel. A [D]dynamic pressure is generated in the partly open position of the seat valve in the valve subchamber and is capable through expansion of the hollow part in the control chamber of causing a force which acts on the magnet armature against the force of a resetting spring and on the basis of which the seat valve maintains its partly open position. The valve can be used in slip-controlled hydraulic brake systems of motor vehicles.

Electromagentically actuated valve for slip-controlled hydraulic brake

An electromagnetically actuated valve which achieves the setting of a reduced cross section of flow following a closed position of the valve. The solenoid valve has a seat valve which is surrounded by a sleeve which is secured pressure-tightly on a valve body. In the closed position of the seat valve, a tappet engages in the sleeve, forming a small radial gap. From the interior of the sleeve, a first pressure-medium passage leads to an end face of a magnet armature, said end face being remote from the seat valve. Outside the sleeve, a second pressure-medium passage leads to that end face of the magnet armature which is close to the seat valve. In the case of a pressure drop between the pressure-medium inlet and the pressure-medium outlet of the solenoid valve, the seat valve can assume a partially open position following a closed position of said valve since, due to the gap, which acts as a restriction, a pressure disequilibrium arises at the magnet armature and valve opening forces are compensated. The valve can be employed in slip-controlled hydraulic brake systems of motor vehicles.

A valve having a magnetic armature, which is moved longitudinally in a valve dome; a valve tappet of this armature carries a closing member of a seat valve, which is open when in the rest position. The seat valve is disposed in a valve chamber, from which two pressure fluid conduits lead to face ends of the magnetic armature, which is sealed on its circumference side. When the seat valve is partially open, a pressure is produced in a partial valve chamber by means of a shaping of the valve seat as a hollow cone and of the closing member as a flattened end ball. In the control chamber remote from the closing member, this pressure leads to a movement of the magnetic armature against the tension of a restoring spring, which results in a reduction of the through flow cross section of the seat valve. The valve is particularly useful in slip-controlled hydraulic brake systems of motor vehicles.

Electromagnetically actuated valve particularly for slip-controlled

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Leingarten, Germany

Martin Oehler