EP 3391023 A1 20181024 - METHOD FOR OPERATING AN ELECTROSTATIC SOOT SENSOR
Title (en)
METHOD FOR OPERATING AN ELECTROSTATIC SOOT SENSOR
Title (de)
VERFAHREN ZUM BETREIBEN EINES ELEKTROSTATISCHEN RUßSENSORS
Title (fr)
PROCÉDÉ POUR FAIRE FONCTIONNER UN CAPTEUR DE SUIE ÉLECTROSTATIQUE
Publication
Application
Priority
- DE 102015225739 A 20151217
- EP 2016077946 W 20161117
Abstract (en)
[origin: WO2017102232A1] The invention relate to a method for operating an electrostatic soot sensor by means of a voltage supply, wherein the electrostatic soot sensor has a first electrode, a second electrode, and a guard electrode, wherein the first electrode and the second electrode are electrically insulated from each other by an insulating body and the guard electrode is arranged between the first electrode and the second electrode, wherein the guard electrode is also electrically insulated from the first electrode and the second electrode by the insulating body, wherein a first electric potential is applied to the first electrode by means of the voltage supply and wherein a second electric potential is applied to the second electrode by means of the voltage supply such that a voltage arises between the first electrode and the second electrode and wherein a guard potential is applied to the guard electrode by means of the voltage supply, wherein the measurement current flowing between the first electrode and the second electrode is sensed by means of a current-measuring element. In order to specify a method for operating an electrostatic soot sensor by means of which the measurement readiness of the electrostatic soot sensor can be determined reliably and accurately and by means of which measurement errors caused by leakage currents can be compensated, the first electrode is disconnected from the first electric potential and the leakage current flowing between the guard electrode and the second electrode is sensed by means of the current-measuring element in order to sense leakage currents.
IPC 8 full level
G01N 15/06 (2006.01)
CPC (source: EP US)
F02D 41/1466 (2013.01 - US); G01M 15/102 (2013.01 - US); G01N 15/0656 (2013.01 - EP US); G01R 19/0092 (2013.01 - US); F01N 2560/02 (2013.01 - US); G01N 33/0027 (2013.01 - EP US); G01R 19/1659 (2013.01 - US)
Citation (search report)
See references of WO 2017102232A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102015225739 A1 20170622; DE 102015225739 B4 20190912; CN 108369173 A 20180803; EP 3391023 A1 20181024; US 10920702 B2 20210216; US 2019024598 A1 20190124; WO 2017102232 A1 20170622
DOCDB simple family (application)
DE 102015225739 A 20151217; CN 201680074019 A 20161117; EP 16798145 A 20161117; EP 2016077946 W 20161117; US 201616063162 A 20161117