blog Resources

European Patents via NewsEdge :

Pub. Number EP2004967Appl. Data EP2007723930A 20070403 DaimlerChrysler AG KEPPELER, Berthold KNEZEVIC, Aleksandar PAULE, Markus SCHARR, DetlefTitle DEVICE FOR MONITORING AN EXHAUST GAS CATALYTIC CONVERTER IN THE EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINEAbstract The invention relates to a device for monitoring an exhaust gas catalytic converter in the exhaust system of an internal combustion engine. Provided for this purpose is a measuring arrangement (10) which is arranged in the exhaust system (A) in such a way that, in most of the operating range of the internal combustion engine (1), it assumes a temperature which correlates with a temperature of the exhaust gas catalytic converter (4). According to the invention, the measuring arrangement (10) has a temperature-sensitive component with a characteristic component parameter which is designed as a temperature-dependent component parameter which changes abruptly at a predefined transition temperature or in a predefined transition temperature range or as a temperature-dependent component parameter which changes continuously as a function of the temperature in a predefined manner. A control and evaluating unit (7) which is connected to the measuring arrangement (10) can measure the characteristic component parameter and/or a change thereof and can correlate this with an ageing state of the exhaust gas catalytic converter (4).If you would like to purchase a copy of this patent, please call MicroPatent at 800-648-6787.

<<European Patents — 12/31/08>>