Robert Boschgmbh

Robert Bosh Gmbh

Erwin Krimmer

Wolfgang Schulz

Tilman Miehle

Manfred Zimmermann

Siegfried Fehrenbach

Achim Meisiek

Helmut G Schwegler

Bruno Hezel

Christian Lorenz

Lutz Ballhause

Maria Esperilla

Georg Mallebrein

Andreas Blumenstock

Asta Reichl

Kurt Herbst

Steffen Schumacher

Peter Jauernig

Ralph Krause

Peter Baur

Helmut Denz

Ernst Wild

Udo Hafner

Hans Hecht

Rainer Haeberer

Thomas Klotzbuecher

Klaus Kaiser

Werner Brehm

Markus Rueckle

Winfried Kuhnt

Eberhard Utz

Bernhard Bauer

Helmut Clauss

Kurt Gensheimer

Jurgen Hess

Rolf Bald

Wilhelm Sorg

Bernd Koch

Bernd Groll

Wolfgang Golderer

Albert Eisele

Matthias Brendle

Hubert Hickl

Richard Lorenz

Martin Reif

Andreas-Bernd Rosenbusch

Eberhard Wizgall

Claus Sax

Gerhard Pirch

Paul Schmid

Wolfram Knis

Rainer Hahner

Felix Laudaeusser

Phillip Funke

A solenoid valve, such as, for example, a tank-vent valve f or tank venting in motor vehicles, includes at least one valve orifice forming a sealing seat, and a valve member, which cooperates with the sealing seat for releasing and closing it, the valve member being stressed by at least one spring element and activated by an electromagnet. An essentially unstressed neutral position of at least one additional spring element, which acts upon the valve member in the activation direction, is provided in which the valve member is set apart from the sealing seat. In this manner, the impact of the valve member on the sealing seat, which may be accompanied by distracting noises and wear, is damped.

Solenoid valve, e.g. a tank-vent valve for tank ventilation in motor vehicles

An actuator () has two parts in the iron circuit and has a simple construction. A short-circuit element () has an offset (), which depending on the position of an armature () varies the course () of magnetic flux in such a way that over the entire stroke, a constant, high magnetic force is achieved, and thus a shallow course of magnetic force in stroke is attained.

Actuator with magnetic circuit having two iron parts

The invention relates to a method for producing a throttle valve unit for installation into a flow conduit through which a gas flow passes. A flap shaft of the throttle valve unit is affixed to a stamped insert part inside a fastening region. The stamped insert part, which includes an insert border, is molded into a housing. At the same time as the stamped insert part is molded into the housing, the flap shaft affixed to the stamped insert part is molded-in inside the fastening region. A planar region of the stamped insert part connected to the flap shaft is cut out from this stamped insert part.

Butterfly valve with injection-molded shaft

A valve () has a filter () integrated in the housing (), The filter is located in the vicinity of an intake-valve opening (), by way of which a smaller physical size and a larger opening cross-section for an influent regeneration gas to the convergent-divergent nozzle results.

Valve comprising a filter

A measuring instrument for contactless detection of an angle of rotation comprises a carrier plate () consisting of a magnetically soft material that serves as a rotor. The stator of the sensor comprises at least two parts, the ends (and) of which terminate in two planes. The measuring gap (M) containing an element () that is sensitive to a magnetic field is located between the ends (). Due to the fact that the ends () of the two stator parts () terminate in different planes, the measuring element () can be situated in a very small measuring gap (M) in which the magnetic flux of the magnet () can be concentrated.

Measuring instrument for contactless detection of an angle of rotation

A method and an apparatus operate a tank system including a tank system of a motor vehicle. The tank system includes a tank for receiving a fluid medium forming a volatile substance and an adsorption filter connected to the tank for receiving the volatile substance which emanates from the tank. A shutoff valve is connected to the adsorption filter and is drivable between an open position and a closed position whereat the tank system is closed off to the ambient. A tank fill-level sensor detects the fill level of the fluid medium in the tank. A fill pipe is connected to the tank for filling with the fluid medium. The fill level is detected while tanking and the shutoff valve is driven into the closed position when the fill level has reached a maximum fill level.

Method and arrangement for obtaining a low-emission tanking operation of a tank system including a tank system of a motor vehicle

In a flap valve for controlling a gas flow, with a valve tube ( ) that carries the gas flow and with a valve flap ( ) that is pivotable in the valve tube ( ) and that in its closing position rests sealingly with its outer contour on the inner wall of a flexible thin-walled tube ( ) disposed coaxially in the valve tube ( ), and with a valve shaft ( ) connected to the valve flap ( ) in a manner fixed against relative rotation, it is provided, in order to attain a sensitive adjustment of the valve flap ( ) and for the sake of technologically simple, inexpensive production of the flap valve ( ), that the valve shaft ( ) is positioned at an acute angle (&ggr;) relative to the valve plane, and the thin-walled tube ( ) is formed directly and integrally onto the valve tube ( ) (FIG. ).

Flap valve

A magnet valve according to the related art has a sealing and damping device with an elastic region on which, during operation, a force acts due to different existing pressures that must also be overcome when the armature plate is moved. A magnet valve ( ) designed according to the invention has a sealing and damping device ( ) with an elastic region ( ) that is oriented and designed in relation to a seal seat ( ) in such a fashion that the above-described force is offset. As a result, a better characteristic curve of the magnet valve ( ) over the existing differential pressure is obtained.

Magnetic valve

In a flap valve for controlling a gas stream, having a valve tube that carries the gas stream and having a valve flap, disposed in the valve tube, that is pivotable between a closing position and an open position and is seated in a manner fixed against relative rotation on an adjustable flap shaft, to avoid openings of the shaft in the valve tube inside the sealing region between the valve flap and the valve tube, the flap shaft is oriented such that its axis forms an acute angle (&agr;) with the axis of the valve tube. The valve flap seated on the flap shaft in a manner fixed against relative rotation is oriented such that in its closing position, its surface normal is aligned with the axis of the valve tube or extends at an acute angle to it.

The current invention relates to a valve device ( ), in particular for tank ventilation in motor vehicles, having a valve housing ( ) with an inlet fitting ( ) and an outlet fitting ( ), having an armature ( ) that is provided inside the valve housing ( ) and can be moved by means of an electromagnet ( ), having a closing body ( ) that is connected to the armature ( ) and closes a sealing seat ( ) of the outlet fitting ( ) when the electromagnet ( ) is without power and opens it when the electromagnet ( ) is supplied with power wherein the free cross sectional area between the inlet fitting ( ) and the outlet fitting ( ) can be continuously changed, and having a spring element ( ) which presses the closing body ( ) with a slight pressure against the sealing seat ( ). In order to assure a reliable seal of the sealing seat ( ) in a simple manner, according to a first embodiment according to the invention, the spring element ( ) is comprised of a leaf spring ( ) which is connected on the one end to the armature ( ) and on the other end to the closing body ( ) and furthermore, is pre-stressed against the closing body ( ). As an alternative embodiment possibility, a spring element ( ) with a spiral spring ( ) is proposed, which deforms exclusively in the direction of its longitudinal axis even during the stroke motion of the valve device ( ).

Valve device

A control unit ( ) makes a single control signal available for driving the through-flow control valves (TEV , TEV ) ( ). Through-flow valve (TEV ) has a larger maximum through flow than through-flow control valve (TEV ). A delay circuit is indicated by the phantom outline ( &prime;) and is mounted at the valve stage TEV2 ( ). The delay circuit includes an electric delay element ( ) with the aid of which the original control signal is delayed in time by an amount &Dgr;t relative to the control signal of control valve (TEV ). The resulting delayed signal is supplied to an AND-gate ( ) together with the original control signal. Accordingly, a control signal is present at the output of the AND-gate for the control valve (TEV ). The time delay makes possible the exclusive activation of the through-flow control valve (TEV ) ( ) at low pulse duty factors. In this way, a high small quantity meterability is achieved. Starting at a specific pregivable switch-in time, the control valve (TEV ) ( ) is switched in so that a very large through flow is possible. The invention thereby makes possible excellent meterability at low as well as at high through flows.

Method and arrangement for through-flow controlling fuel vapor in a tank-venting system of a motor vehicle

A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump that is driven as a function of engine rpm and that serves to generate the fuel pressure and throughput required in the distributor tube in the applicable operating state of the engine. The system also includes a fuel metering unit, which is associated with the high-pressure pump and includes a regulating valve which is actuated electromagnetically. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating valve discharges into the low-pressure region of the high-pressure pump. The above design features make a fuel metering unit possible that is capable of metering the exact quantity of fuel desired in the applicable engine operating state to the high-pressure pump of the CR system.

Metering unit for a fuel injection system for internal combustion engines

A magnet valve for tank venting in motor vehicles, having at least one valve opening forming a sealing seat and having a spring-loaded valve member cooperating with the at least one sealing seat for opening and closing the valve and actuated by an electromagnet counter to the restoring force of a restoring spring. Downstream of the valve member, a flow element that throttles the flow of a gas is disposed, the shape of the flow element is adapted to the opening cross section of the sealing seat that cooperates with the valve member, for determining (metering) the flow quantity of the gas through the cross section of the flow element when the magnet valve is open. The shape of the flow element is determined (metered) in such a way that the area of the opening cross section of the effective valve seat is greater than 2.5 and preferably greater than 9 times the area of the effective cross section of the flow element.

Valve for dosing the admission of volatilized fuel

A solenoid valve for tank ventilation in motor vehicles, comprising a magnetic yoke with at least one valve opening and with a cooperating spring-loaded valve member for opening and closing the at least one valve opening. The valve element constitutes a magnetic armature of an electromagnet and is disposed between the magnetic yoke of the electromagnet and a hollow, cylindrical magnet core of the electromagnet. A valve seat body which is separate from the magnetic yoke and contains the at least one valve opening is disposed in an axial opening in the magnetic yoke, and on a side remote from the valve member. The valve seat body rests against a housing wall of the solenoid valve by use of a support element made of a damping material.

Valve for metered introduction of evaporated fuel

A valve for metered introduction of fuel, volatilized from a fuel tank of an internal combustion engine, into the engine, having a valve housing which has an inflow neck for connection to a fuel tank or to an adsorption filter downstream of the tank for the volatilized fuel, and having an outflow neck for connection to the engine, having a valve member accommodated between the inflow neck and the outflow neck in the interior of the valve housing, which valve member is actuatable by an electromagnet that has a magnet core, and which cooperates with a valve seat embodied on a valve seat body, is characterized in that the valve housing includes a first housing part, closed on the inflow side by a protective screen, in/on which the electromagnet, the valve member, the valve seat body and the outflow neck are provided, and a second housing part, on which the inflow neck is disposed and which can be secured to the first housing part.

Valve for metered introduction of volatilized fuel

Growing community of inventors

Pluederhausen, Germany

Erwin Krimmer