Hjs Emission Technology Gmbh & Co. Kg

Purem Abgassysteme Gmbh & Co. Kg

Frank Noack

Bernd Maurer

Klaus Schrewe

Bettina Baier

Georg Huthwohl

Thomas Kästner

Thomas KÄSTNER

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 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

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Menden, Germany

Frank Noack