Daimler-benz Ag

Mercedes-benz Aktiengesellschaft

Hans-Dieter Schuster

Jorg Abthoff

Hans-Joachim Langer

Rolf Gabler

Joerg Abthoff

Gunter Loose

Karlwalter Schmidt

Erwin Strohmer

Reiner Kreeb

Roland Schulte

Gottfried Wollenhaupt

Bernhard Jokl

Marijan Laszlo

Friedhelm Nunnemann

Michael-Rainer Busch

Wolfgang Zahn

Gunther Ebinger

Dag-Harald Huttebraucker

Roland Huss

Christoph Noller

Michael Osswald

Rolf Ohlendorf

Gerd Tiefenbacher

Ludwig Fricker

Kurt Oblander

Gunther Bubeck

Klaus B Kubatschka

Jurgen Lammer

Peter Bach

Markus Fortkord

Gottfried Wollenraupt

Joerb Abthoff

Hans-Georg Schmitz

Gustav Felgendreher

Roland Fink

Karlheinz Gube

Hans-Joachim Sponagel

Karl Jans

An exhaust-gas filter, for example a soot-particle filter, has a filter element which has inlet passages for the raw gas and outlet passages for the clean gas. In order as far as possible to prevent clogging of the filter over the running time caused by deposits on the filter walls, the raw-gas passages are configured with a larger cross-section than the clean-gas passages.

Soot particle exhaust-gas filter

The quality of the external air is determined by means of a pollutant sensor. The quality of the internal air is determined by calculation taking account of the air quantities introduced from outside into the internal space. A decision between air supply operation and air recirculation operation is then made on the basis of a comparison of the air qualities inside and outside. The pollutant sensor is preferably located in a casing whose internal space is accessible to gases through an opening which is preferably sealed by a gas-permeable membrane.

Device for controlling the ventilation of an internal space,

A ventilation arrangement for the interior of a motor vehicle, having at least a heating or air-conditioning unit. The ventilation arrangement has a fan for air exchange in the interior and a filter for the adsorption of odorous and/or harmful substances contained in the air stream. The filter is designed so that, for the widest possible spectrum of odorous and/or harmful substances, a filter effect is produced which is based on rapid adsorption of the odorous and harmful substances and a gradual desorption thereof with a long time delay. A high short-term concentration of the odorous and/or harmful substances is thus converted by the filter into an extremely low but, instead, long-lasting emission which, with sufficiently extensive dilution, remains below a preset odor threshold or nuisance threshold.

Ventilation arrangement for the interior of a vehicle, in particular a

The exhaust gas equipment for an internal combustion engine contains an exhaust pipe, an exhaust gas cleaner and an adsorption filter, to whose filter body exhaust gas is admitted by a controlled exhaust gas butterfly. In order to prevent damage to the filter due to overheating, in an arrangement of the exhaust gas equipment which is economical in installation space where the adsorption filter is located along the course of the exhaust pipe and a filter body surrounds the latter coaxially, a thermal insulation element is provided between the filter body and exhaust gas flow. The thermal insulation element has transfer openings at least partially outside the exhaust pipe section surrounded by the filter body for guiding the exhaust gas flow through the filter body.

Exhaust gas equipment for an internal combustion engine

A soot burn-off filter including a monolithic filter block made of porous ceramic with a multiplicity of channels which extend in the direction of flow of the exhaust gases of a combustion engine. The channels are sealed alternately at the ends by plugs and are separated from one another by porous partition walls. The partition walls are provided with a catalytic coating and have an increased flow resistance in a region at the downstream end of the filter, the partition walls in this region being of gastight design and the catalytic coating of the partition walls ending in a region upstream of the gastight region of the partition walls.

Gas filter with catalytic coating and a gastight downstream region

An apparatus for the regeneration of a soot-particle filter is located in the exhaust-gas line of an air-compression, fuel-injected internal-combustion engine. The apparatus regenerates the filter using a process which burns off the soot particles in the filter. A device in the intake line is actuable as a function of the engine load and engine speed and controls the cross-section of the intake line. To prevent damage to the soot-particle filter body during a transition of the internal-combustion engine into the deceleration mode, immediately after the transition into the deceleration mode of the internal-combustion engine, the process and apparatus move the device for controlling the intake-line cross-section first out of its open position into a position to reduce the line cross-section to a minimum and thereafter continuously into its open position.

Process and apparatus for the regeneration of a soot-particle filter in

Thermal shock reactions of a heated lambda probe owing to the impact of liquid droplets on the heated ceramic probe body during cold starting, which phenomenon can lead to a fracture of the ceramic probe body, are avoided, and a better representativeness of the signals transmitted by the lambda probe is achieved, in that a gas deflector plate is arranged before the lambda probe in the exhaust gas flow, as seen in the direction of flow of the exhaust gases, in such a way that the lambda probe lies in its Lee.

Device for protecting a lambda probe

The invention relates to bearing support of a throttle valve shaft in the housing of an exhaust gas line in which the shaft is rotatably supported on both sides in a bearing sleeve element constructed cup-shaped. The cups themselves are retained by spring force against the housing extending correspondingly conically within these areas. In order to keep small the actuating forces necessary for the rotation of the throttle valve shaft, each bearing sleeve element is retained by itself against the housing by means of a spring supported at the housing and the securing of the shaft against any axial displacement takes place by a separate axial bearing.

Bearing support of a throttle valve shaft in the housing of an exhaust

A diesel internal combustion engine in the exhaust gas line system of which is arranged a device for the ionization of soot particles contained in the exhaust gas and a device for the separation thereof from the exhaust gas stream. In order to be able to realize a low structural expenditure, the device for the ionization of the soot particles is constructed as a light source emitting ultraviolet light.

Diesel internal combustion engine with an exhaust gas line system

An arrangement for removing soot particles from the exhaust stream of a diesel internal combustion engine in such a manner that the soot particles are caught between conductor elements disposed at different potential, produce a short circuit and thereby burn off. In order to be able to realize a purification of the exhaust gas stream without a significant increase of the exhaust gas counterpressure, a centrifugal separator is connected to the exhaust gas line, which passes over into a soot particle collecting chamber constructed axially symmetrical to the longitudinal axis thereof; a predetermined number of electrodes is arranged in turn in the soot particle collecting chamber at a slight distance to the casing interior surface whereby the electrodes among one another or the electrodes and the soot particle collecting chamber itself are at a different potential.

Arrangement for the removal of soot particles from the exhaust gas

A process and equipment for removing toxic and malodorous gases from the fresh air for vehicle cabins by catalytic oxidation, the process being based on passing the fresh air over a heating-system heat exchanger, the heat-emitting surfaces of which form the support for an oxidation catalyst. The heat exchanger used is the heating-system heat exchanger which is present in virtually all motor vehicles. In contrast to known solutions for purifying the fresh air, for example by means of activated carbon, the process is maintenance-free and does not require any additional constructional volume.

Process and equipment for removing odorous substances from the fresh air

A monolithic exhaust gas catalyst, or catalytic converter, is arranged in a metallic housing and is supported against the inner surfaces of the housing by a resilient fiber material positioned therebetween. The resilient fiber material is provided with a catalytically active coating so that the exhaust gases which flow outside the exhaust gas catalyst and through the fiber material, are also converted by the treated fiber material.

Exhaust gas catalytic converter arrangement

Use of a metallic partial composite laminate body which is provided with a large number of axially extending channels and is made by expanding a large number of layers, as support for exhaust gas catalysts of Otto-engines in which the mutually oppositely disposed non-inflated edge portions of the expanded partial composite laminate body serve for a particularly stable fastening of the support in the catalyst housing.

Metallic support for exhaust gas catalysts of Otto-engines and method

An exhaust gas filter for Diesel engines that consists of a monolithic filter block made of a porous ceramic material having a plurality of ducts extending in the flow direction of the exhaust gases, said ducts alternately being closed by plugs in order to force the passage of gas through the duct walls into adjacent ducts. In the case of this exhaust gas filter, the filter block is divided into zones having a decreasing porosity in the flow direction of the gases, and the plugs which force the passage of the gas through the duct walls are each arranged in the area of the zone border. Filters are preferred that have two to four zones of decreasing porosity. The exhaust gas filters are manufactured in that a filter blank that has the largest desired porosity is immersed in a solution or suspension of a porosity-reducing agent up to the desired zone border and is subsequently dried and is possibly burnt. Preferred agents for reducing the porosity are water glass solutions or cordierite suspensions.

Exhaust gas filter for diesel engines

An exhaust gas filter for Diesel engines that consists of a filter block made of a porous ceramic material, and a plurality of ducts extending through said filter block that extend in the flow direction of the exhaust gases. The ducts in each case are alternately closed at their upstream or their downstream end, whereby the exhaust gases are forced to penetrate a filtering separating wall between two ducts. The closing means at the downstream end, are arranged so that they are staggered with respect to one another in the flow direction; in particular they are staggered by about 5 to 150 mm. The staggered arrangement of the closing means reduces the danger of a thermal damage to the filter block during the burning-off of the deposited soot.

Growing community of inventors

Schorndorf, Germany

Hans-Dieter Schuster