Patent · US Active

Sensor and operating method for detecting soot

US8033159B2 · kind B2 · utility

9Cited by

9References

12Claims

0Family size

Assignee

Siemens VDO Automotive AG · US

Inventors

Maximilian Fleischer · Ehrenkirchen, DE
Roland Pohle · Füssen, DE
Kerstin Wiesner · Putzbrunn, DE

Key dates

Filing date	Jun 27, 2006
Grant date	Oct 11, 2011
Priority date	—
Expiry date	Sep 21, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/04
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a sensor and a method for detecting soot, said method comprising the following steps: a first operating temperature is set on the sensor for a measuring phase, such that soot can be deposited on the surface of the substrate, but depositions interfering with the measurement of the soot are prevented; the time between the beginning of the measurement and the increase in conductivity between the electrodes is recorded; and a second operating temperature is set on the sensor for a regeneration phase, such that the deposited soot is burned with the oxygen in the test gas. The inventive product is a soot sensor for using in the automobile industry.

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