Robert Boschgmbh

Peter Romann

Ferdinand Reiter

Udo Hafner

Rudolf Sauer

Heinrich Knapp

Waldemar Hans

Max Greiner

Rudolf Krauss

Wolfgang Kramer

Rudolf Babitzka

Erwin Nagele

Eberhard Biermann

Martin Maier

Heinz Gneiss

Manfred Knetsch

Gunther Plapp

Heinz Rilling

Christof Vogel

Thomas Wilfert

Thomas Naeger

Klaus-Henning Krohn

Jorg Lange

Hermann Hoelle

Werner Prohaska

Werner Kammerer

Siegfried Rohde

Helmut Wolfinger

Franz-Josef Thiel

Heinrich Steinrucken

In electromagnetically operable valves which have been proposed, having a fuel inlet connecting piece which is surrounded by a magnet coil and is used as a core, at least a part of the valve is surrounded by a plastic sheath on which an electrical connecting plug is integrally formed. However, different valve extrusion coating tools are required depending on the embodiment of the electrical connecting plug. In the valve, the electrical connecting plug ( ) is injection moulded at the same time as the extrusion coating of the magnet coil ( ) and thus forms an independent plastic injection molding. Only one valve extrusion coating tool is now required for different embodiments of the electrical connecting plug, resulting in greater flexibility in the assembly line. The valve is used as an injection valve for fuel injection systems.

Methods of forming a sheath and plastic ring on a electromagnetically operated valve

An injection valve can compensate for the reduction in through-flow experienced with known valves operating at higher temperatures. By forming the valve needle and valve seat carrier from different materials and more particularly by using a material with a very low coefficient of thermal expansion for the valve needle, the valve needle expands less in comparison with the valve seat carrier when there is an increase in temperature. Thus, an increase in travel occurs and a reduction in the metered quantity of fuel due to the formation of gas bubbles is avoided. The injection valve is particularly suitable for use in fuel injection systems of mixture-compressing, spark-ignition internal combustion engines.

Electromagnetically actuable fuel injection valve

In a fuel injector, a spherical valve-closure member interacts with an edge seat. The edge seat is formed by surfaces that follow one another directly at different angles in the area of the valve seat. The angles of the surfaces are such that the sealing edge of the edge seat points toward the valve-closure member. The fuel injector is especially suited for applications in fuel injection systems of mixture-compressing internal combustion engines having externally supplied ignition.

Fuel injector having spherical valve-closure member and valve seat

Injection arrangement for an internal combustion engine and method for

The invention is directed to a perforated spray disk which is arranged downstream of a valve seat surface, on one end of a valve seat body, and has a bulge, the collecting space formed between the valve-closing element and the bulge is first of all produced, the perforated spring disk fixed on the valve seat body, by means of a shaped body with a smaller cross section than that of the valve-closing element by plastic deformation of the perforated spray disk in its central area, the inner wall of the bulge merging directly into the wall of the valve seat surface and leads to a collecting space with a very small volume. The invention is particularly suitable for fuel injection valves of fuel injection systems for internal combustion engines.

Valve and method for the production of a valve

Aggregates, such as fuel-injection valves, are directly connected via their connector pins to the printed-circuit board and do not necessitate any additional structural elements. The plug connector is designed so as not to lie or so as to lie only slightly above the plane of the printed-circuit board, so that, viewed in the extension direction of the fuel-injection valves, a very low overall height is attained for the device. Because of the small unit volume of the printed-circuit board, of the housing, and of the plug connector, the device requires comparatively little space. The device is especially suited for the common electrical contacting of electromagnetically actuated fuel-injection valves.

Device for the common electrical contacting of a plurality of

An electromagnetically operable valve having a fuel inlet connecting piece which is surrounded by a magnet coil and is used as a core, at least a part of the valve is surrounded by a plastic sheath on which an electrical connecting plug is integrally formed. In the novel valve, the electrical connecting plug is injection moulded at the same time as the extrusion coating of the magnet coil and thus forms an independent plastic injection moulding. Only one valve extrusion coating tool is now required for different embodiments of the electrical connecting plug, resulting in greater flexibility in the assembly line. The valve is used as an injection valve for fuel injection systems.

Electromagnetically operable valve

Valve needle for an electromagnetically actuable valve and method for

Fuel-injection valve

An electromagnetically operated fuel injection valve has a valve housing, a valve seat body having a valve seat and a guide cylinder, a valve closing element projecting in the guide cylinder and supporting a ball type valve closing body around which fuel can flow through spiral flutes in which the valve closing element releases or interrupts a fuel flow by sitting on or lifting off the valve seat. The valve seat body in addition to the guide cylinder and the valve seat, also contains at least one outlet orifice. The valve seat body is provided with an all-round spiral flute between the guide cylinder and the valve seat.

Electromagnetically operated fuel injection valve

Electromagnetically operated valve

A device for injecting a fuel-gas mixture having a cup-shaped gas enveloping sleeve in which the cylindrical part of the gas enveloping sleeve permits exact centering of the gas enveloping sleeve relative to the fuel injection valve. The novel device while having very exact centering of the gas enveloping sleeve relative to the fuel injection valve has the advantage of a simple, economical manufacture. The device includes radially inwardly pointing guide strips that rest with their face ends on the circumference of the fuel injection valve and thus in a simple way center the gas enveloping sleeve relative to the fuel injection valve. The device for injecting a fuel-gas mixture is especially well-suited for injection of a fuel gas mixture into the intake tube of a mixture-compressing internal combustion engine with externally supplied ignition.

Device for injecting a fuel-gas mixture

A fuel injection device for internal combustion engines including a fuel distributor which has a plurality of connection fittings with a radially protruding locking collar. A plurality of fuel injection valves embodied as so-called top-feed valves that are inserted in a liquid-tight manner into the connection fitting. For retention of the fuel injection valves these valves are provided with oppositely disposed catch springs which extend parallel to the valve axis and on faces oriented toward one another have a groove and locking protrusion for engaging the locking collar from behind.

Fuel injection device for internal combustion engines

A connecting tube connected at one end to an armature of a fuel injection valve having a valve closing element secured to its other end. The connecting tube is easy to manufacture, it is simple to assemble, it has minimal weight and maximum strength. The connecting tube is resilient elastic and has openings along substantially its entire length and is easy to manufacture by rolling up a sheet-metal blank or by using a rigid spring element with spaced spring coils.

Electromagnetically actuatable valve

Growing community of inventors

Stuttgart, Germany

Peter Romann