公开(公告)号：US20130283887A1

公开(公告)日：2013-10-31

申请号：US13994056

申请日：2011-12-14

申请人： Johannes Ante ,  Markus Herrmann ,  Andreas Ott ,  Willibald Reitmerier ,  Denny Schädlich ,  Manfred Weigl ,  Andreas Wildgen

发明人： Johannes Ante ,  Markus Herrmann ,  Andreas Ott ,  Willibald Reitmerier ,  Denny Schädlich ,  Manfred Weigl ,  Andreas Wildgen

IPC分类号： G01N15/06

CPC分类号： G01N15/0656 ,  F01N9/002 ,  F01N2560/05 ,  Y02T10/47

摘要： 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.

摘要翻译： 一种用于在内燃机的排气道中操作烟灰传感器的方法。 烟炱传感器包括施加测量电压的数字间电极结构。 来自废气流的烟灰颗粒自身沉积在数字间电极结构上，并且测量电流被评估为烟灰传感器的烟灰浓度的测量。 提供了用于燃烧清洁数字间电极结构的加热元件。 用于操作烟灰传感器的方法具有良好的测量结果和最短的空闲时间。 为此，根据内燃机的工作状态确定燃烧清洁烟炱传感器的时间点，然后通过加热元件加热烟炱传感器开始数字间电极结构的燃烧清洁 。