Mtu Friedrichshafen Gmbh

Faurecia Emissions Control Technologies, Germany Gmbh

Faurecia Emissions Control Technologies Usa, LLC

Emcon Technologies Germany (augsburg) Gmbh

Klaus Rusch

Rolf Kaiser

Erich Forster

Jörg Remele

Jens Niemeyer

Tim Späder

Guido Schäffner

Klaus Wehler

Andrea Prospero

Norbert Markert

Boban Maletic

Günter Zitzler

Florian Stadler

Alexander Schneider

Daniel Chatterjee

Klaus Regenold

Raphael-David Leopold

Michael Neuscheler

Viktor Mantaj

Hilmar Wolman

Michael Rauter

John Scholz

A method for operating an exhaust after-treatment system including an SCR-catalyst, a metering device for dosing a reducing agent being controlled on the basis of a determining variable that influences a nitrogen-oxide concentration downstream of the SCR-catalyst. A breakthrough identification is carried out for the SCR-catalyst, wherein if a breakthrough is identified, the determining variable is altered to a higher nitrogen-oxide concentration downstream of the SCR-catalyst and the metering device is controlled in order to dose the reducing agent on the basis of the altered determining variable.

Method for operating an exhaust after-treatment system comprising an SCR-catalyst

A method for execution with an exhaust-gas particle filter which is operated with an exhaust-gas aftertreatment system, wherein the exhaust-gas particle filter has a filter wall along which exhaust gas is conducted for filtering purposes; wherein the method includes a regeneration phase with the steps: a) setting a soot load on the exhaust-gas particle filter, wherein the set soot load effects the formation of a soot layer on ash deposited on the filter wall; and b) subsequently mobilising the deposited ash by burning off the formed soot layer during the course of an active regeneration of the exhaust-gas particle filter.

Method for mobilising ash in an exhaust-gas particle filter

A method for detecting the aging of a heterogeneous catalytic converter, including the following steps: acquiring at least one measurement signal in a media flow passing through the catalytic converter downstream of the catalytic converter; applying a time-variant input signal to the media flow and/or the catalytic converter; evaluating a behavior of the at least one measurement signal as a function of the time-variant input signal; and detecting a state of aging of the catalytic converter.

Method for detecting the aging of a heterogeneous catalytic converter, exhaust after-treatment system for an internal combustion engine, and internal combustion engine

An assembly () for introducing a reducing agent into the exhaust pipe () of an exhaust system of an internal combustion engine, in particular of a motor vehicle, has a feed connector () which opens into the exhaust pipe () and includes a wall (), a feed device () for reducing agents which opens into the feed connector (), and a device () for generating a gas flow (G) which is additional to the reducing agent flow (R) and lines the wall () of the feedconnector (). Furthermore, there is described a method of introducing a reducing agent into the exhaust pipe () of an exhaust system of an internal combustion engine, in particular of a motor vehicle.

Assembly and method for introducing a reducing agent into the exhaust pipe of an exhaust system of an internal combustion engine

An assembly () for introducing a reducing agent into the exhaust pipe () of an exhaust system of an internal combustion engine, in particular of a motor vehicle, has a feed connector () which opens into the exhaust pipe () and includes a wall (), a feed device () for reducing agents which opens into the feed connector (), and a device () for generating a gas flow (G) which is additional to the reducing agent flow (R) and lines the wall () of the feed 10 connector (). Furthermore, there is described a method of introducing a reducing agent into the exhaust pipe () of an exhaust system of an internal combustion engine, in particular of a motor vehicle.

A mixing element has a grid which includes a plurality of rows parallel to each other and a plurality of deflector elements which project from the grid and are inclined in relation to the grid plane normal. All deflector elements of one row are inclined in the same direction. The deflector elements of at least two immediately adjacent first rows are inclined in the same direction. The mixing element is used in an exhaust system of an internal combustion engine.

Mixing element and an exhaust system for an internal combustion engine

A static mixing element, in particular for arrangement in an exhaust system of an internal combustion engine, has a grid-like component having a flow therethrough. The grid-like component is formed in one piece from an elongated metal strip. In the production of the static mixing element, the metal strip is bent to form the grid-like component.

Static mixing element and method of producing a static mixing element

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Achberg, Germany

Klaus Rusch