Robert Boschgmbh

Gross & Froelich Gmbh & Co.

Bruno Hezel

Erwin Krimmer

Juergen Stegmaier

Dietmar Uhlenbrock

Peter Jauernig

Markus Ulrich

Rainer Haeberer

Tilman Miehle

Michael Gerlach

Wolf-Ingo Ratzel

Christian Lorenz

Harald Laue

Vaclav Straus

Hubert Hickl

Peter Baur

Vlatko Babic

Guenther Krenz

Markus Christen

Andreas-Bernd Rosenbusch

Eberhard Wizgall

The invention relates to a sensor arrangement for determining a tank fill level of a liquid, especially a reducing agent for removing nitrogen from the exhaust gases of an internal combustion engine, which liquid is contained in a tank, at least two electrically conductive measuring electrodes being at least partially embedded in a carrier that is produced of an electrically non-conductive material. The sensor arrangement includes a temperature sensor, especially a resistor with negative temperature coefficient being used as a temperature sensor, which is integrated into the carrier.

Sensor arrangement for determining a tank fill level, and method for producing it

A bypass valve for internal combustion engines for connecting the pressure side to the intake side of a supercharging device. The bypass valve includes an electromagnetic actuator and a valve housing in which a closing component is movably accommodated. The closing component has a valve body, acted upon by pressure and movable in a flow channel, and a switchable sealing element.

Bypass valve for internal combustion engines

Known pressure regulating valves have a valve closing body, which cooperates with a valve seat, and a restoring spring, which acts on a valve closing body in the direction facing away from the valve seat. It is disadvantageous that the restoring spring is disposed in a pressure chamber, which has the valve seat and through which aggressive blowby gases flow out of the crankcase. The blowby gases for instance have a corrosive, etching effect on the material of the restoring spring, shortening the service life and lessening the spring force of the restoring spring. This has a highly adverse effect on the regulation of the pressure in the crankcase. In the pressure regulating valve of the invention, the service life of the restoring spring is increased. According to the invention, the restoring spring () is embodied as a tension spring and is located on the side of the valve closing body () facing away from the valve seat ().

Pressure regulating valve

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

The invention concerns an oil separator () for crankcase gases of an internal combustion engine, comprising a preliminary separator (), a cyclone separator (), a fine separator () and, if necessary, a valve device () that are provided in a cascade arrangement on a cylinder-head cover () of the internal combustion engine; in order to create an oil separator for use in various engines having different quantities of crankcase gas, said oil separator is designed so that, as an option, helixes () having different radial depths of the flow path can be inserted in a housing section for the cyclone separator ().

Oil separating device for crankcase gases of an internal combustion engine

The invention concerns an oil separator ( ) for crankcase gases of an internal combustion engine, comprising a preliminary separator ( ), a cyclone separator ( ), a fine separator ( ) and, if necessary, a valve device ( ) that are provided in a cascade arrangement on a cylinder-head cover ( ) of the internal combustion engine; in order to reduce the mutual interference of flowing crankcase gas and separated fluid, an oil drain opening ( ) is provided upstream from the cyclone separator ( ) in the flow or cascade direction, through which oil separated in the preliminary separator can be returned.

Oil separating device for crankshaft gases of an internal combustion engine

The invention concerns an oil separator ( ) for crankcase gases of an internal combustion engine, comprising a preliminary separator ( ), a cyclone separator ( ), a fine separator ( ) and, if necessary, a valve device ( ) that are provided in a cascade arrangement on a cylinder-head cover ( ) of the internal combustion engine; in order to simplify the design of the oil separator and obtain easier installability, it is provided that the preliminary separator ( ), the cyclone separator ( ), the fine separator ( ) and the valve device ( ) provided, if necessary, are located on the outside ( ) of the cylinder-head hood ( ) and are covered by a housing half-shell ( ) which, together with the outside ( ) of the cylinder-head hood ( ), forms a housing for the oil separator ( ).

Oil-separating device for crankcase gases in an internal combustion engine

Exhaust gas recirculation valve for an internal combustion engine

A fuel line connector for producing recirculation of leakage fuel in a fuel injection valve in which communication of a fuel line with a connection bore of a housing, and with the holder of a fuel injection valve is produced. This is achieved by providing that the fuel line connector has elastically deformable retaining arms, which, after a connecting stub of the fuel line connector has been plugged into a connection bore, engage the housing that contains the connection bore from behind.

Fuel line connector

A roller intended in particular for office furniture comprises a supporting body (1) made from a plastic material, an axle (2) mounted in the supporting body, at least one wheel (2) seated on the axle, a metallic pin (5) seated rotatably in the metallic body and arranged in offset position relative to the axle (2), in a plane extending perpendicularly to the axle, and a wiper contact conductively connected with the pin (5) and provided with a resilient portion projecting beyond the plane (20) extending perpendicularly to the pin (5) and being tangent to the at least one wheel (3). The resilient portion of the wiper contact is formed by a helical spring (12) standing substantially perpendicular to the tangential plane (20) and carrying on its free end a contact body (15) projecting beyond the tangential plane (20).

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Stuttgart, Germany

Bruno Hezel