Daimler Chrysler Ag

Purem Abgassysteme Gmbh & Co. Kg

Klaus-Juergen Marquardt

Bernd Krutzsch

Guenter Wenninger

Michel Weibel

Klaus Binder

Georg Huthwohl

Tillmann Braun

Bernd Maurer

Gerhard Fraenkle

Alexander Funk

Oliver Ebelsheiser

Peter Ebel

Ansgar Schaefer

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

In a method for burning deposited soot particles in a particle filter on an exhaust device of a diesel engine, first of all, in a known way, a catalytic converter produces NO from exhaust gas. This NO reduces the ignition temperature of soot to such an extent that it burns at normal exhaust-gas temperature. Furthermore, there is provision to add fuel additive, which likewise allows the ignition temperature of the soot to be reduced. The sulphur content in the fuel is determined, and either generation of NO or the addition of additive is used as a function of this measurement. This preferably takes place automatically. To determine the sulphur content, it is possible, for example, to use a sulphur sensor in the tank.

Method and device for treating diesel exhaust gas

Growing community of inventors

Remshalden, Germany

Klaus-Juergen Marquardt