Daimler Chrysler Ag

Dornier Gmbh

Thomas Birkhofer

Carsten Plog

Ralf Moos

Werner Maunz

Aleksandar Knezevic

Thomas Stengel

Dirk Voigtlaender

Ralf Mueller

Renato Andorf

Norbert Markert

Holger Leye

Willi Muller

Thomas Ried

Matthias Bohl

High temperature sensor

In a method for identifying the state of an NOx storage catalyst which is cyclically loaded with NOx in the exhaust stream of an internal combustion engine and regenerated, two electrical defining quantities, independent of each other, of the electrically complex impedance of the NOx storage catalyst are detected, one of the two electrical quantities being a measure of the degree of loading of the NOx storage catalyst, and from the second electrical quantity the point in time being identifiable for the end of the regeneration process of the NOx storage catalyst.

Method for identifying the state of an NOx storage catalyst

An apparatus for reducing the emission of vaporized hydrocarbons in a fuel supply system. The apparatus comprises a filter for binding the hydrocarbons. A catalyst for oxidation of the hydrocarbons to carbon dioxide and water is provided downstream of the filter.

Apparatus for reducing the emission of vaporized hydrocarbons in a fuel supply system

A gas sensor, comprises a substrate, a sensor unit including a functional layer and an electrode structure, and an electric heating and/or temperature measuring arrangement. An electrically conductive shielding structure is provided between the sensor unit and the electric heating arrangement in order to shield the measurement process at the sensor unit from interferences owing to the heating process, thereby reducing or preventing the effects of electrical fields caused by voltages applied to the heating arrangement from altering or disrupting the measurement process.

Gas sensor

Growing community of inventors

Immenstaad, Germany

Thomas Birkhofer