WO2003034053A3 - Method for detecting particles in a gas stream and detector - Google Patents

Method for detecting particles in a gas stream and detector Download PDF

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Publication number
WO2003034053A3
WO2003034053A3 PCT/DE2002/003779 DE0203779W WO03034053A3 WO 2003034053 A3 WO2003034053 A3 WO 2003034053A3 DE 0203779 W DE0203779 W DE 0203779W WO 03034053 A3 WO03034053 A3 WO 03034053A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas stream
electrodes
electrode
detector
particles
Prior art date
Application number
PCT/DE2002/003779
Other languages
German (de)
French (fr)
Other versions
WO2003034053A2 (en
Inventor
Bernhard Sprenger
Thomas Wahl
Reinhard Pfendtner
Thomas Brinz
Kai Baldenhofer
Thomas Grau
Original Assignee
Bosch Gmbh Robert
Bernhard Sprenger
Thomas Wahl
Reinhard Pfendtner
Thomas Brinz
Kai Baldenhofer
Thomas Grau
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10244702A external-priority patent/DE10244702A1/en
Application filed by Bosch Gmbh Robert, Bernhard Sprenger, Thomas Wahl, Reinhard Pfendtner, Thomas Brinz, Kai Baldenhofer, Thomas Grau filed Critical Bosch Gmbh Robert
Priority to EP02785044A priority Critical patent/EP1436589A2/en
Publication of WO2003034053A2 publication Critical patent/WO2003034053A2/en
Publication of WO2003034053A3 publication Critical patent/WO2003034053A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/92—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating breakdown voltage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

The invention concerns a detector and a method for detecting particles in a gas stream, in particular of soot in an exhaust gas stream. Said detector comprises first and second electrodes, an electric voltage capable of being applied between the first electrode and the second electrode such that a gas discharge can be stimulated at least intermittently between the electrodes. The invention is characterized in that at least a dielectric layer (116; 138, 140) is interposed between the first electrode (2; 11; 112; 134) and the second electrode (3; 13; 114; 136) so that the electric discharge produced between the two electrodes is systematically dielectric hindered and the two electrodes are connected to a device for measuring an electric current or electric discharge pulses, so that the variation of an electrical measurement signal provides an indication of the density of particles in the gas stream based on the particles in the dielectric hindered discharge zone.
PCT/DE2002/003779 2001-10-09 2002-10-08 Method for detecting particles in a gas stream and detector WO2003034053A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02785044A EP1436589A2 (en) 2001-10-09 2002-10-08 Method for detecting particles in a gas stream and detector

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10149731 2001-10-09
DE10149731.8 2001-10-09
DE10244702A DE10244702A1 (en) 2001-10-09 2002-09-24 Method for the detection of particles in a gas stream and sensor therefor
DE10244702.0 2002-09-24

Publications (2)

Publication Number Publication Date
WO2003034053A2 WO2003034053A2 (en) 2003-04-24
WO2003034053A3 true WO2003034053A3 (en) 2003-10-09

Family

ID=26010326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/003779 WO2003034053A2 (en) 2001-10-09 2002-10-08 Method for detecting particles in a gas stream and detector

Country Status (2)

Country Link
EP (1) EP1436589A2 (en)
WO (1) WO2003034053A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029834A1 (en) 2005-06-27 2007-01-04 Robert Bosch Gmbh Apparatus and method for exhaust gas measurement with charged particles
US20080105567A1 (en) 2006-11-08 2008-05-08 Honda Motor Co., Ltd. Sensing device and method
JP2010210533A (en) * 2009-03-12 2010-09-24 Ngk Insulators Ltd Particulate matter detector
US8875560B2 (en) 2011-06-30 2014-11-04 Caterpillar Inc. System implementing constituent identification and concentration detection
US20130000280A1 (en) * 2011-06-30 2013-01-03 Caterpillar, Inc. Gas monitoring method implementing soot concentration detection
US8783112B2 (en) 2011-06-30 2014-07-22 Caterpillar Inc. Gas monitoring system implementing pressure detection
US11952905B1 (en) * 2022-10-07 2024-04-09 Rtx Corporation Detecting engine exhaust debris using saturation current

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387369A (en) * 1978-10-11 1983-06-07 Johnson Controls, Inc. Broad spectrum charged electric field polar gas sensing and detection system
US4565969A (en) * 1983-04-29 1986-01-21 Aerochem Research Laboratories, Inc. Saturation current incipient soot detector
DE4423397A1 (en) * 1993-12-23 1995-07-13 Fraunhofer Ges Forschung Process and device for exhaust gas purification
DE19518970C1 (en) * 1995-05-23 1996-11-21 Fraunhofer Ges Forschung Method and device for treating exhaust gas
DE19536705A1 (en) * 1995-09-30 1997-04-03 Guenther Prof Dr Ing Hauser Method for measuring particles in gas flow e.g. vehicle exhaust
DE19635231A1 (en) * 1996-08-30 1998-03-05 Siemens Ag Diesel exhaust gas purification unit combining high-frequency silent plasma discharge and catalytic action
WO1998048922A1 (en) * 1997-04-28 1998-11-05 Institut für Niedertemperatur-Plasmaphysik e.V. an der Ernst-Moritz-Arndt-Universität Greifswald Device and method for decomposing harmful substances contained in flue gas
US5892364A (en) * 1997-09-11 1999-04-06 Monagle; Matthew Trace constituent detection in inert gases
DE19853841A1 (en) * 1998-11-23 1999-06-02 Victor Prof Dr Ing Gheorghiu High voltage detection electrode for particles in gases
EP1018647A2 (en) * 1998-12-10 2000-07-12 Aisin Cosmos R & D Co. Ltd. Micro gas detectors
WO2000057992A1 (en) * 1999-03-25 2000-10-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for treating flowing gases, especially exhaust gases
US6156162A (en) * 1998-03-02 2000-12-05 Low Emissions Technologies Research And Development Partnership Power supply for dielectric barrier discharge plasma

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387369A (en) * 1978-10-11 1983-06-07 Johnson Controls, Inc. Broad spectrum charged electric field polar gas sensing and detection system
US4565969A (en) * 1983-04-29 1986-01-21 Aerochem Research Laboratories, Inc. Saturation current incipient soot detector
DE4423397A1 (en) * 1993-12-23 1995-07-13 Fraunhofer Ges Forschung Process and device for exhaust gas purification
DE19518970C1 (en) * 1995-05-23 1996-11-21 Fraunhofer Ges Forschung Method and device for treating exhaust gas
DE19536705A1 (en) * 1995-09-30 1997-04-03 Guenther Prof Dr Ing Hauser Method for measuring particles in gas flow e.g. vehicle exhaust
DE19635231A1 (en) * 1996-08-30 1998-03-05 Siemens Ag Diesel exhaust gas purification unit combining high-frequency silent plasma discharge and catalytic action
WO1998048922A1 (en) * 1997-04-28 1998-11-05 Institut für Niedertemperatur-Plasmaphysik e.V. an der Ernst-Moritz-Arndt-Universität Greifswald Device and method for decomposing harmful substances contained in flue gas
US5892364A (en) * 1997-09-11 1999-04-06 Monagle; Matthew Trace constituent detection in inert gases
US6156162A (en) * 1998-03-02 2000-12-05 Low Emissions Technologies Research And Development Partnership Power supply for dielectric barrier discharge plasma
DE19853841A1 (en) * 1998-11-23 1999-06-02 Victor Prof Dr Ing Gheorghiu High voltage detection electrode for particles in gases
EP1018647A2 (en) * 1998-12-10 2000-07-12 Aisin Cosmos R & D Co. Ltd. Micro gas detectors
WO2000057992A1 (en) * 1999-03-25 2000-10-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for treating flowing gases, especially exhaust gases

Also Published As

Publication number Publication date
EP1436589A2 (en) 2004-07-14
WO2003034053A2 (en) 2003-04-24

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