Mann+hummel Gmbh

Michael Micke

Jochen Linhart

Sabine Otterbach

Martin Weindorf

Guenter Jokschas

Michael Fasold

Dieter Schreckenberger

Andreas Franz

Norbert Strassenberger

Steffi Kiedaisch

Kathrin Lichtenwalter

Christopher Marc Sturgess

Andreas Steuss

Thorsten Schmid

Holger Findeisen

Karin Gerlach

Elke Duerr

Andreas Klinser

Chris Sturgess

Norbert Straßenberger

A fuel filter has a housing having an intake and an outlet. A filter element is arranged in the housing such that a filtered area is separated seal-tightly from an unfiltered area. A flow passage is provided between the unfiltered area and the filtered area. A porous filter member closes off the flow passage, wherein the porous filter member is arranged seal-tightly on a wall arranged about the flow passage. The filter element has a filter medium and a geodetically upper and a geodetically lower terminal disks arranged at end faces of the filter medium. The filter medium is connected seal-tightly to the terminal disks. The flow passage is arranged in the geodetically upper terminal disk that forms the wall.

Fuel filter

A device and a method for operating a fuel filter () with a diaphragm () for cleaning water separated from the fuel, comprising a collecting chamber () for the water geodetically arranged at the bottom in a housing () of the fuel filter (), are proposed, comprising at least one sensor () each for the maximum () and for the minimum () water level in the collecting chamber (), by means of which a valve () for discharging the water from the collecting chamber () arranged between the collecting chamber () and a water purification device () containing the diaphragm () is controllable. A detection device () for detecting the flow behavior of the water between the collecting chamber () and the water purification device () is present with which at least the time interval (t) of the change of the water level between a signal of the sensor () for the maximum and of the sensor () for the minimum water level is detectable and in that a computing and memory unit () for the evaluation of the signals in the detection device () and for signaling () a deviation from a predetermined flow behavior of the diaphragm () is present.

Device and method for operating a fuel filter

A ceramic filter element of ceramic material has an exterior surface that is provided with structural elements. The structural elements are produced by a non-cutting method. The structural elements are molded in the ceramic material in the form of grids, periodic patterns, irregular patterns, lettering or labels.

Method for producing a ceramic filter element

Disclosed is a diesel particle filter with a ceramic filter body and a method for producing the filter body. The ceramic filter body includes gas channels provided in a filter section with planar and porous filter walls. The filter walls provide throughflow of the exhaust gas flow perpendicular to the surfaces thereof. The filter body includes at least one catalytic section for catalytic purification of the exhaust gas flow. The filter body together with the filter section and the at least one ceramic section are made in one-piece from at least one ceramic impregnated fiber web. Gas channels are formed by sintering the fiber web at a temperature such that fibers of the fiber material are burned away and the ceramic material is monolithically sinter-bonded in one-piece with the at least one catalytic section and the filter section to produce the filter body.

Diesel particle filter with a ceramic filter body

A filter device for a motor vehicle has a filter element with a porous ceramic support body provided with one or more passages for receiving a liquid to be filtered and filter membranes formed on inner walls of the passages. The liquid to be filtered passes through the filter membranes into the support body and exits from the support body through a circumferential surface of the support body. At least one compensation element is arranged at an end face of the support body. The compensation element is elastically deformable for providing an additional liquid volume that is generated when the liquid expands due to freezing.

Filter device for a motor vehicle

A fuel filter for cleaning fuel, particularly for engines of motor vehicles, having a filter housing () with an inlet (), an outlet (), and a filter element () for cleaning the fuel situated between the inlet () and the outlet (). A collecting space () for water separated from the fuel additionally is provided in the filter housing (), and a water discharge device () having a housing () is also arranged in the filter housing. Discharge device housing () has an inlet () and an outlet (), between which a membrane () that is permeable for water molecules is situated, and the water-permeable membrane () has channel structures () which are closed in a sealed manner at their upper ends.

Fuel filter system and method of operating same

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Stuttgart, Germany

Michael Micke