Mahle Filtersysteme Gmbh

Mable Filtersysteme Gmbh

Hagen Zelssmann

Helmut Auernhammer

Ivano Morgillo

Frank Reiners

Horst Hauke

Dirk Bartz

The invention relates to an adsorption filter for fuel vapors, particularly from the fuel tank of a combustion engine of a motor vehicle, which can be regenerated by desorptive reverse flow back flushing and which interacts with heat accumulating substances via the adsorbable or desorbable filter material. The aim of the invention is to increase the heat accumulability inside the filter material. To this end, the heat accumulating substances consist of phase-change materials (PCM) that are distributed in small units within the reactive filter material.

Adsorption filter for fuel vapors

An aeration and deaeration device for the fuel tank ( ) of an internal combustion engine ( ) in which the aeration and deaeration are performed through an adsorption filter, the adsorption filter can be regenerated by backwashing with atmospheric air, the backwashing air is sent to the air intake area of the internal combustion engine, the composition of the backwashing air is determined and taken into account in control of the combustion process taking place inside the engine, should permit backwashing of the adsorption filter which has an influence on the composition of the engine exhaust gas. To this end, such a device is characterized by the following features: a sensor ( ) which detects selected substance data and/or state data on the purging air is provided in a purging air line ( ) carrying purging air into the intake area of an internal combustion engine ( ), the area of the purging air line ( ) containing the sensor ( ) can be switched together with the interior of the adsorption filter ( ) as a forced flow circulation line, for turning the circulation line on and off, a 3/2-way valve ( ) is situated in the purging air line ( ) downstream from the sensor ( ), its one outlet leading to the outside of the circulation line and its other outlet leading back to the adsorption filter ( ) through a bypass line ( ) running parallel to the purging air line ( ).

Aeration and deaeration device for the fuel tank of an internal combustion engine

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Herrenberg, Germany

Hagen Zelssmann