Method and device for operating a particle sensor
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United States of America Patent
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Sep 13, 2011
Grant Date -
Feb 11, 2010
app pub date -
Jul 1, 2009
filing date -
Jul 4, 2008
priority date (Note) -
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Abstract
Method and device for operating a particle sensor arranged in an exhaust tract of an internal combustion engine of a motor vehicle. The particle sensor including a sensor carrier having two sensor electrodes arranged at a predetermined distance from one another on one side of the sensor carrier. The two sensor electrodes are exposed to an exhaust gas stream in the exhaust tract. The at least two sensor electrodes are acted upon with a collective potential, the collective potential having a value such that electrically charged particles are attracted out of the exhaust gas stream in the exhaust tract. The attracted particles in this case accumulate on and/or between the two sensor electrodes.
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