Sensor and method for monitoring and controlling catalytic converters, in particular automotive catalytic converters

摘要

The invention relates to a sensor (40) for monitoring and controlling catalysts, especially motor vehicle catalysts, and to a method for controlling the operation of a catalyst, especially a catalyst used in emission purification systems in motor vehicles. According to the invention, the sensor (40) is embodied as a temperature probe which is provided with a catalytic coating (50). According to the inventive method, in order to carry out the control, a catalytically coated temperature probe (40) is used, at least partial quantities and/or the type of reagents supplied to the catalyst being controlled by said sensor (40). The invention can be applied in a general manner to the monitoring and/or control of catalytic processes, especially for monitoring and controlling the catalytically supported emission purification in motor vehicles.