Pierburg Gmbh

Christoph Sadowski

Rolf Lappan

Werner Buse

Rolf Dohrmann

Lukas Romanowski

Franz-Josef Schnelker

Martin Nowak

Karsten Grimm

Sabine Siebrandt

Turgut Yilmaz

Stefan Moormann

Dr Michael Breuer

Thorsten Schorn

Dr Karsten Grimm

Martin Lauterbach

A valve device for a hydraulic circuit includes an actuator unit and a valve unit. The actuator unit comprises an electromagnetic circuit comprising an armature which moves in a translational manner, a core, a coil carrier, a coil configured to be energized, and a flux guiding device. The coil is arranged on the coil carrier. The valve unit comprises a valve housing comprising a transverse bore which serves as a first control chamber pressure port, a regulating slide mounted in the valve housing, the regulating slide being configured to move axially, a first outlet port, an inlet port, and a second control chamber pressure port arranged between the inlet port and the first outlet port.

Valve device for a hydraulic circuit and oil pump regulating arrangement

A valve device for a hydraulic circuit includes an actuator unit comprising an electromagnetic circuit which comprises an armature, a core, a coil carrier, a coil, and a flux guiding device. A valve unit comprises a unit formed by a valve tappet and the armature, inlet and outlet ports, and a control port arranged between the inlet and outlet ports. A longitudinal through bore is arranged in the unit to extend from the inlet port into an actuator chamber. A first control body cooperating with a first valve seat and a second control body cooperating with a second valve seat are arranged at the unit in which the longitudinal through bore is formed. The armature and the valve tappet are loaded in an opening direction of the inlet valve by a spring element and are loadable in an opening direction of the outlet port by energizing the electromagnetic circuit.

Valve device for a hydraulic circuit and oil pump control apparatus

A spring arrangement for a variable valve drive of an internal combustion engine includes an intermediate lever, a control shaft, a control shaft roller, a working cam contour, and a spring element. The intermediate lever comprises a contact surface, a camshaft roller which bears against a camshaft, and a slot roller which bears against a slotted guide. The control shaft roller is arranged on the intermediate lever to face away from the slotted guide. The control shaft roller bears against the control shaft. The working cam contour is formed at an end of the intermediate lever opposite the camshaft roller. The spring element comprises a force component on the contact surface in the direction of the camshaft and the slotted guide, and an end leg. The spring element loads the camshaft roller against the camshaft and the slot roller against the slotted guide. The end leg bears against the contact surface.

Spring arrangement for a variable valve drive of an internal combustion engine

A valve device for a hydraulic circuit includes an actuator unit, a valve unit and an opening. The actuator unit comprises an electromagnetic circuit comprising a movable armature, a core, a coil configured to be supplied with a current and a flux guiding means, and a space arranged in a valve interior between the armature and the core. The valve unit comprises an outlet, an inlet arranged between the outlet and the space in the valve interior, a valve seat arranged between the inlet and the outlet, and a valve closing body connected with the armature. The valve closing body is spring-loaded towards the valve seat. The opening is arranged at an end of the valve unit opposite to the space. The opening comprises a valve tappet arranged therein. The valve tappet is pressure-loaded and displaceable counter to the valve closing body in an opening direction.

Valve device for a hydraulic circuit, and oil-pump regulating arrangement

A fluid pressure reversing valve includes a housing, a coil carrier, a coil wound on the coil carrier, a bearing, an armature axially displaceable in the bearing, a core, a flux guiding device, a first connection bore, a control chamber, a first valve seat. A connection sleeve comprises a second connection bore, a first valve seat for a valve element of the armature, and a second valve seat for the valve element of the armature. The connection sleeve communicates with a fluid to be controlled. A third connection bore is connected with the control chamber. A valve element abuts against the first valve seat in a first position so as to form a connection between the first connection bore and the third connection bore, and against the second valve seat in a second position so as to form a connection between the third connection bore and the second connection bore.

Fluid pressure reversing valve

A solenoid valve includes a housing within which is arranged a coil wound onto a coil former, an armature, a core, and a multiple-part return path arrangement, which together form an electromagnetic circuit. The armature is configured to be movable and to act at least indirectly on a valve closure element mounted in the coil former via a bearing. The multiple-part return-path arrangement comprises at least one return-path cover section, a return-path side section and a return-path inner section. The return-path inner section is arranged in the coil former.

Solenoid valve

A pressure-control valve includes a housing, a coil carrier, a coil wound on the coil carrier, a first bearing, an armature comprising a valve member. The armature is configured to be axially displaced in the first bearing. A core. A flux guiding device. A connection sleeve comprises a valve seat for the valve member. A first connection bore is configured to be connected with a tank and with the connection sleeve. A second connection bore is configured to be connected with a consumer. An end of the connection sleeve distant from the core comprises a control bore with a control member supported therein. The armature and the control member are configured to be in a force-transmitting operative connection at least in an opening direction of the pressure-control valve.

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Bochum, Germany

Christoph Sadowski