<p>A method for operating a soot sensor in the exhaust gas tract of an internal combustion engine. The soot sensor includes an inter-digital electrode structure to which a measurement voltage is applied. Soot particles from the exhaust gas flow deposit themselves on the inter-digital electrode structure and an measuring current is evaluated as a measurement for the soot concentration of the soot sensor. A heating element for burning clean the inter-digital electrode structure is provided. The method for operating the soot sensor has good measurement results and the shortest possible idle time. To this end, a point in time for burning clean the soot sensor is determined in accordance with the operational state of the internal combustion engine and then, the burning clean of the inter-digital electrode structure starts by heating the soot sensor by the heating element.</p>
申请公布号
EP2652280(A2)
申请公布日期
2013.10.23
申请号
EP20110815758
申请日期
2011.12.14
申请人
CONTINENTAL AUTOMOTIVE GMBH
发明人
ANTE, JOHANNES;HERRMANN, MARKUS;OTT, ANDREAS;REITMEIER, WILLIBALD;SCHAEDLICH, DENNY;WEIGL, MANFRED;WILDGEN, ANDREAS