Patent · US Active

Method and device for operating a particle sensor

US9399967B2 · kind B2 · utility

1Cited by

0References

9Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Johannes Ante · Regensburg, DE
Markus Herrmann · Scheidegg, DE
Andreas Ott · Erfurt, DE
Willibald Reitmeier · Hohenschambach, DE
Denny Schädlich · Neustadt, DE
Manfred Weigl · Viehhausen, DE
Andreas Wildgen · Nittendorf, DE

Key dates

Filing date	Mar 9, 2012
Grant date	Jul 26, 2016
Priority date	—
Expiry date	Jun 17, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2560/05
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.