Electrostatic particle sensors

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United States of America Patent

PATENT NO 11105724
SERIAL NO

16337964

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Various embodiments include a method for checking a sensor for soot particles in exhaust of an engine comprising: generating a sensor current between a first electrode and a second electrode of the sensor, wherein the first electrode and the second electrode define a gap through which the exhaust gas flows between the electrodes, by applying a difference in potential between the electrodes, wherein soot particles accumulate on the electrodes and, after a dwell time dependent on the preloading of the electrodes with soot particles, they move from a first electrode to the respective second electrode generating a flow of current as a measure of the quantity of soot in the stream of exhaust gas; determining whether a peak in the sensor current is measured after the switching off of the internal combustion engine; and if no peak in the sensor current is measured, flagging the particle sensor as faulty.

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Patent Owner(s)

  • VITESCO TECHNOLOGIES GMBH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eberl-Neumaier, Patrick Altfraunhofen, DE 1 0
Koller, Florian Lappersdorf, DE 3 131
Nienhoff, Michael Regensburg, DE 12 43
Reiß, Sebastian Burglengenfeld, DE 1 0
Stahl, Christian Obertraubling, DE 17 7

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