Purem Abgassysteme Gmbh & Co. Kg

Hjs Emission Technology Gmbh & Co. Kg

Hjs Fahrzeugtechnik Gmbh & Co.

Daimler Chrysler Ag

Purem Abgassystem Gmbh & Co. Kg

Eberspächer Unna Gmbh & Co. Kg

Bernd Maurer

Georg Huthwohl

Klaus Schrewe

Frank Noack

Alexander Funk

Bettina Baier

Bernd Krutzsch

Klaus Binder

Gerhard Fraenkle

Günter Wenninger

Werner Weisweiler

Thomas Kästner

Peter Ebel

Klaus-Juergen Marquardt

Ansgar Schaefer

Georg H&uuml;thwohl

A heating module () for an exhaust-gas purification system connected to the outlet of an internal combustion engine comprises a catalytic burner, with an HC injector () and with an oxidation catalytic converter () positioned downstream of the HC injector () in the flow direction of the exhaust gas, for supplying thermal energy to an exhaust-gas purification unit of the exhaust-gas purification system. It is provided here that the heating module () has a main section (), a secondary section () which comprises the catalytic burner (), and a device () for controlling the exhaust-gas mass flow flowing through the secondary section (). In a first embodiment, the main section () has, in the inlet region or the heating module (), an overflow pipe portion () which has overflow openings (), between which overflow diverting chambers () is situated, parallel to the main section () of the heating module (), the secondary section portion () with the oxidation catalytic converter (). In another embodiment, it is provided that the secondary section () has, at the inlet side and outlet side, in each case one diverting chamber () which extends in the radial direction from the main section (), between which diverting chambers () is situated, parallel to the main section () of the heating module (), the secondary section portion () with the oxidation catalytic converter ().

Heating module for an exhaust-gas purification system

The invention relates to a method for feeding thermal energy into an exhaust emission control unit () connected in the exhaust gas system of an internal combustion engine by heating the exhaust gas flowing to the exhaust emission control unit (). Said exhaust gas is heated to a SET temperature. In said method, the exhaust gas discharged from the internal combustion engine is heated to the SET temperature by converting hydrocarbons (HCs) metered into the exhaust gas flow at two oxidation catalytic converters () series-connected in the flow direction of the exhaust gas.

Method for feeding thermal energy into an exhaust emission control unit connected in the exhaust gas system of an internal combustion engine

A device for exhaust-gas purification utilizes reduction of nitrogen oxides which are present in the exhaust gas from internal combustion engines by way of gaseous ammonia with an SCR catalytic converter. The functions of the device are monitored with regard to their line paths with connections, valves and sensors by referring to these elements themselves using suitable control circuitry via the evaluation and control unit.

Device for exhaust-gas purification, and an operating and monitoring for said device

A filter assembly for an exhaust gas purification system of an internal combustion engine. The filter assembly, has porous filter plate elements, connected with each other on their outer as well as on their inner peripheries, forming in pairs as filter pockets. Catalytic agents such as ammonia are applied to the filter pockets on the outer and/or inner sides to oxidize carbon black contained in the combustion gas. In particular, this filter assembly is compact and can be used for diesel engines of motor vehicles.

Filter assembly for an exhaust gas purification system

A reducing agent dosing device for delivering a reducing agent into the exhaust gas systemof the internal combustion engineof a motor vehicle, comprising a reducing agent tankconnected to the exhaust gas systemvia a supply linewith a dosing valvefor delivering a specific quantity of reducing agent. The dosing valveis disposed at a distance from the exhaust gas systemin the supply lineand the output of the dosing valveterminates in a mixing chamber. Compressed air, provided by the charge air of a charging groupof the internal combustion engine, flows though the mixing chamber in the direction toward the exhaust gas systemto mix the reducing agent output with an air stream.

Reducing agent dosing device

An exhaust gas purification system for denoxing exhaust gases of a combustion unit on an SCR catalyst utilizing ammonia (NH ) additionally introduced into the exhaust gas flow before the SCR catalyst which has at least one reducing agent container in which the NH ( ) to be supplied to the exhaust gas flow is stored, which container is connected via a supply line with the exhaust gas line and is adapted so that at least one reducing agent container is held in a docking device as a portion of the exhaust gas purification system and, via a coupling is connected with the supply line Of coupling one coupling part is associated with the docking device and the other coupling part with the container so that both coupling parts can be engaged with one another via an axial movement directed toward one another. The docking device and the at least one container have cooperating guide through which the container under guidance can be brought into its specified position for joining the two coupling parts

Exhaust gas purification system

A converter for a device for supplying ammonia (NH ) into the exhaust gas flow of a combustion engine comprising a pressure-tight reaction vessel for generating NH by heating a substance thermolytically separating NH under the effect of heat, and a heating unit for heating the reaction vessel to the operating temperature for generating the NH , is defined thereby that the reaction vessel usefully comprises in the region of its bottom an outlet provided with connection means and an inlet , spaced apart from the outlet , also provided with connection means, with which connection means the interior of the reaction vessel is connectable to a filling and withdrawal unit for drawing off a carrier medium disposed in the reaction vessel , and for filling the reaction vessel with new substance thermolytically separating NH transported by the carrier medium.

Converter for a device for introducing ammonia into exhaust gas flow of internal combustion engine and method for filling converter

An exhaust gas purification system for denoxing exhaust gases has a converter containing a substance thermolytically separable into NH,, a feed line connecting the converter with an exhaust gas line for supplying NH,into the exhaust gas flow therein, a dosing device in the feed line for dosing the NH,to be introduced into the exhaust gas flow, a heatable cold-start store connected to the feed line between the converter and dosing device for providing the substance during starting of a combustion unit connected to the exhaust gas line, an air feeding device having two air conduits provided with valves wherein one conduit is connected to the feed line between the cold-start store and dosing device and the other conduit is connected to a mixing chamber located in the feed line after the dosing device, and a reservoir container for storing the substance connected to a filling pipe terminating in the converter.

Growing community of inventors

Balve, Germany

Bernd Maurer