Mann+hummel Gmbh

Filterwerk Mann + Hummel Gmbh

Matthias Teschner

Arthur Klotz

Herbert Pietrowski

Ingo Koch

Thomas Jessberger

Dieter Schreckenberger

Volker Kuemmerling

Lukas Bock

Michael Thienel

Robert Zbiral

Sven Epli

Markus Kolczyk

Thomas Schleiden

Gelase Mbadinga Mouanda

Andreas Pelz

Nikolaus Moser

Andreas Beck

Klaus Waltenberg

Thomas Petschl

Thorsten Schmid

Luiz Carlos Fritz

Naihe Shen

Tobias Warth

Helge Krempels

Dieter Amesöder

Michael Wein

Claus Fischer

Marco Woitoll

Juergen Schlamp

Steffen Grau

Mathias Endress

Siegfried Herkommer

Panagiotis Giagounidis

Jürgen Kosicki

A valve has a valve housing with a valve seat and a valve body holder with a fluid-permeable flow opening. A valve body is arranged in the valve body holder and axially displaceable between an open state and a closed state of the valve. The valve body has an envelope surface with a sealing region for fluid-tightly contacting the valve seat in the closed state. It has a base region adjoining the sealing region in longitudinal direction. A cross section contour of the envelope surface increases monotonously from the sealing region to the base region. In the open state, an axial end of the base region contacts the valve body holder. The envelope surface has a weakened region connecting sealing region and base region to each other. The weakened region has a reduced stiffness along the longitudinal direction. The valve body is formed of a thermoplastic polyhalogen olefin.

Valve with valve body, and crankcase ventilation device

A pipe component has a casing embodied as a folded bellows with folds. A tubular support body has an outer circumference and a length extension in a direction of a center line of the tubular support body. The tubular support body is embedded in the casing and supports the casing. The tubular support body has at least one stabilization element and the at least one stabilization element has segments that are axially spaced apart and at least partially extend circumferentially. The segments are connected by one or a plurality of hinges, respectively, along the length extension of the tubular support body. The hinges are arranged in the folds of the folded bellows of the casing.

Pipe component

A pulsation damper () for damping pressure pulsations of a fluid is insertable into the fluid line as intermediate piece by forming an axial flow channel (), and the pulsation damper () featuring a housing (). The pulsation damper () is characterized by the fact that the housing () has at least one hollow space () communicating with the flow channel () and in which at least one attenuator () is disposed movably in axial direction.

Pulsation damper

A filtering device for filtering liquids in internal combustion engines has a filter housing and a filter element inserted into the filter housing. A cover disk closes off the filter housing. The cover disk consists of two individual disks and a central flow connection connects the two individual disks. The two individual disks and the flow connection form a common plastic component.

Filtering system, in particular for filtering liquids in internal combustion engines

A switching drum seal () for a switching drum () for sealing an intake pipe in an intake manifold system of a multi-cylinder internal combustion engine, having two spaced-apart, circumferentially extending circumferential sealing sections () with circumferential sealing surfaces () and two spaced-apart, axially extending axial sealing sections () with axial sealing surfaces () and having at least one resilient element () to impart resilience to at least one circumferential sealing section () perpendicular to its circumferential sealing surface. The resilient element () extends in a region between the switching drum () and one of the circumferential sections () and is supported on the switching drum ().

Switching drum seal

An intake pipe ( ) for an internal combustion engine composed of shells ( ) in which the geometry of the joining surfaces ( ) adopts an approximately stepped course in areas with a slight incline relative to to joining force (F). This produces areas with a greater or lesser inclination relative to a joint line ( ) indicating the average inclination of the joining surfaces. This results in areas which can be welded with a high degree of stability because of their considerable incline towards the joining force. These areas can then support areas which are less inclined towards the joining force. This allows the shells ( ) to have strongly curved joining surfaces, which increases the geometric design freedom of the intake pipe and, in particular, makes it possible to manufacture intake pipes with strongly curved intake channels constructed from just two shells.

Intake pipe for an internal combustion engine comprising at least two welded shells

An intake device for an internal combustion engine, comprising welded shells joined along a partition line, in which the partition line is provided with a region for producing inclined additional surfaces, which generate a transverse force Q due to their inclination relative to a pressure force D applied for welding the shells. This transverse force Q offsets a transverse force Q which is generated as a result of the inclination of partial regions of the partition line relative to the applied pressure force D. In this way, the transverse forces which arise during production of the intake device may be at least partially offset in the component, so that little or no forces are exerted on the molding tools, and the welding results for the intake pipe may thus be improved.

Welded intake device for an internal combustion engine

Growing community of inventors

Ludwigsburg, Germany

Matthias Teschner