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Title: EGR distribution and fluctuation probe based on CO.sub.2 measurements

Abstract

A diagnostic system having a single-port EGR probe and a method for using the same. The system includes a light source, an EGR probe, a detector and a processor. The light source may provide a combined light beam composed of light from a mid-infrared signal source and a mid-infrared reference source. The signal source may be centered at 4.2 .mu.m and the reference source may be centered at 3.8 .mu.m. The EGR probe may be a single-port probe with internal optics and a sampling chamber with two flow cells arranged along the light path in series. The optics may include a lens for focusing the light beam and a mirror for reflecting the light beam received from a pitch optical cable to a catch optical cable. The signal and reference sources are modulated at different frequencies, thereby allowing them to be separated and the signal normalized by the processor.

Inventors:
; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1177510
Patent Number(s):
9,000,374
Application Number:
13/912,462
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Jun 07
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Parks, II, James E, Partridge, Jr., William P, and Yoo, Ji Hyung. EGR distribution and fluctuation probe based on CO.sub.2 measurements. United States: N. p., 2015. Web.
Parks, II, James E, Partridge, Jr., William P, & Yoo, Ji Hyung. EGR distribution and fluctuation probe based on CO.sub.2 measurements. United States.
Parks, II, James E, Partridge, Jr., William P, and Yoo, Ji Hyung. Tue . "EGR distribution and fluctuation probe based on CO.sub.2 measurements". United States. https://www.osti.gov/servlets/purl/1177510.
@article{osti_1177510,
title = {EGR distribution and fluctuation probe based on CO.sub.2 measurements},
author = {Parks, II, James E and Partridge, Jr., William P and Yoo, Ji Hyung},
abstractNote = {A diagnostic system having a single-port EGR probe and a method for using the same. The system includes a light source, an EGR probe, a detector and a processor. The light source may provide a combined light beam composed of light from a mid-infrared signal source and a mid-infrared reference source. The signal source may be centered at 4.2 .mu.m and the reference source may be centered at 3.8 .mu.m. The EGR probe may be a single-port probe with internal optics and a sampling chamber with two flow cells arranged along the light path in series. The optics may include a lens for focusing the light beam and a mirror for reflecting the light beam received from a pitch optical cable to a catch optical cable. The signal and reference sources are modulated at different frequencies, thereby allowing them to be separated and the signal normalized by the processor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {4}
}

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Works referenced in this record:

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journal, December 2008

  • Cundy, Michael; Schucht, Torsten; Thiele, Olaf
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Advanced Laser Imaging Diagnostics in Combustion
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