WO2000034755A3 - Exhaust opacity measuring device - Google Patents

Exhaust opacity measuring device Download PDF

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Publication number
WO2000034755A3
WO2000034755A3 PCT/US1999/029220 US9929220W WO0034755A3 WO 2000034755 A3 WO2000034755 A3 WO 2000034755A3 US 9929220 W US9929220 W US 9929220W WO 0034755 A3 WO0034755 A3 WO 0034755A3
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
radiation
opacity
intensity
emissions
Prior art date
Application number
PCT/US1999/029220
Other languages
French (fr)
Other versions
WO2000034755A2 (en
Inventor
John D Didomenico
Craig S Rendahl
James A Johnson
Donald H Stedman
Gary A Bishop
Original Assignee
Envirotest Systems Corp
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
Application filed by Envirotest Systems Corp filed Critical Envirotest Systems Corp
Priority to EP99967249A priority Critical patent/EP1151276A4/en
Priority to AU23563/00A priority patent/AU2356300A/en
Publication of WO2000034755A2 publication Critical patent/WO2000034755A2/en
Publication of WO2000034755A3 publication Critical patent/WO2000034755A3/en
Priority to HK02103325.8A priority patent/HK1041724A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
    • G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
    • G01M15/108—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using optical methods

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

A remote emissions sensing system and method for sensing exhaust emissions from motor vehicles (10) is provided where the system determines the opacity of an exhaust plume (16). The system comprises a radiation source (12) that emits radiation (20) which is passed through the exhaust plume (16) of a motor vehicle (10) to one or more detectors (14) arranged to receive the radiation (22). A processor (100) calculates the difference between the intensity of source radiation (20) and the intensity of the radiation received (22) by the detectors (14) in first and second detection bands. The intensity difference in the second detection band measures exhaust opacity. If the exhaust opacity exceeds a predetermined level, the emissions data from other detection bands may be flagged as suspect or discarded. Alternatively, for a diesel powered vehicle, the exhaust opacity determination can be validated (104) by a measurement of carbon monoxide in the exhaust plume (16).
PCT/US1999/029220 1998-12-11 1999-12-10 Exhaust opacity measuring device WO2000034755A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99967249A EP1151276A4 (en) 1998-12-11 1999-12-10 Exhaust opacity measuring device
AU23563/00A AU2356300A (en) 1998-12-11 1999-12-10 Exhaust opacity measuring device
HK02103325.8A HK1041724A1 (en) 1998-12-11 2002-05-02 Exhaust opacity measuring device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11195998P 1998-12-11 1998-12-11
US60/111,959 1998-12-11

Publications (2)

Publication Number Publication Date
WO2000034755A2 WO2000034755A2 (en) 2000-06-15
WO2000034755A3 true WO2000034755A3 (en) 2000-11-23

Family

ID=22341376

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/029220 WO2000034755A2 (en) 1998-12-11 1999-12-10 Exhaust opacity measuring device

Country Status (5)

Country Link
US (2) US20020052698A1 (en)
EP (1) EP1151276A4 (en)
AU (1) AU2356300A (en)
HK (1) HK1041724A1 (en)
WO (1) WO2000034755A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6701256B2 (en) * 2001-09-11 2004-03-02 Environmental Systems Products Holdings Inc. Exhaust opacity measuring device
US7485861B2 (en) 2004-02-09 2009-02-03 Environmental Systems Products Holdings Inc. System and method for remote emissions sensing including calculation and calibration techniques compensating for temperature and pressure effects
DE102004028433B4 (en) * 2004-06-14 2006-08-31 Danfoss A/S IR sensor, especially CO2 sensor
MX2007002213A (en) * 2004-08-25 2007-05-04 Environmental Syst Prod System and method for calibrating remote emissions sensing instruments.
US7400398B2 (en) * 2006-05-09 2008-07-15 Environmental Systems Products Holdings Inc. Remote emissions sensing system and method incorporating spectral matching by data interpolation
US7930931B2 (en) * 2008-05-02 2011-04-26 Environmental Systems Products Holdings Inc. System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehicles
US8347701B2 (en) 2008-05-02 2013-01-08 Envirotest Systems Holdings Corp. System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehicles
US8429957B2 (en) 2008-05-02 2013-04-30 Envirotest Systems Holdings Corp. System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehicles
US8447528B2 (en) 2009-12-21 2013-05-21 Envirotest Systems Holdings Corp. Remote vehicle emissions sensing system and method for differentiating water from hydrocarbons
CN108458976B (en) * 2017-02-17 2023-12-12 湖南城市学院 Water transparency detection method and water transparency detection device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363198A (en) * 1992-11-09 1994-11-08 Fournier Thomas J Apparatus and method for measuring smoke opacity of a plume of smoke using an array of light beams
US5760911A (en) * 1994-04-22 1998-06-02 Bha Group Holdings, Inc. Continuous particulate emissions monitor calibrator
US6025920A (en) * 1996-05-06 2000-02-15 Sandia Corporation Opacity meter for monitoring exhaust emissions from non-stationary sources

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1151276A4 *

Also Published As

Publication number Publication date
AU2356300A (en) 2000-06-26
WO2000034755A2 (en) 2000-06-15
HK1041724A1 (en) 2002-07-19
US20020052698A1 (en) 2002-05-02
EP1151276A2 (en) 2001-11-07
EP1151276A4 (en) 2003-07-23
US20030120434A1 (en) 2003-06-26

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