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Yoo J, Prikhodko V, Parks JE, et al. Fast spatially resolved exhaust gas recirculation (EGR) distribution measurements in an internal combustion engine using absorption spectroscopy. Appl Spectrosc. 2015;69(9):1047-58doi: 10.1366/14-07796.
Yoo, J., Prikhodko, V., Parks, J. E., Perfetto, A., Geckler, S., & Partridge, W. P. (2015). Fast spatially resolved exhaust gas recirculation (EGR) distribution measurements in an internal combustion engine using absorption spectroscopy. Applied spectroscopy, 69(9), 1047-58. https://doi.org/10.1366/14-07796
Yoo, Jihyung, et al. "Fast spatially resolved exhaust gas recirculation (EGR) distribution measurements in an internal combustion engine using absorption spectroscopy." Applied spectroscopy vol. 69,9 (2015): 1047-58. doi: https://doi.org/10.1366/14-07796
Yoo J, Prikhodko V, Parks JE, Perfetto A, Geckler S, Partridge WP. Fast spatially resolved exhaust gas recirculation (EGR) distribution measurements in an internal combustion engine using absorption spectroscopy. Appl Spectrosc. 2015 Sep;69(9):1047-58. doi: 10.1366/14-07796. Epub 2015 Aug 06. PMID: 26253286.
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Appl Spectrosc. 2015 Sep;69(9):1047-58. doi: 10.1366/14-07796. Epub 2015 Aug 06.

Fast spatially resolved exhaust gas recirculation (EGR) distribution measurements in an internal combustion engine using absorption spectroscopy.

Applied spectroscopy

Jihyung Yoo, Vitaly Prikhodko, James E Parks, Anthony Perfetto, Sam Geckler, William P Partridge

Affiliations

  1. National Transportation Research Center, Fuels, Engines, and Emissions Research Center, Oak Ridge National Laboratory, 2360 Cherahala Boulevard, Knoxville, TN 37932 USA.

PMID: 26253286 DOI: 10.1366/14-07796

Abstract

Exhaust gas recirculation (EGR) in internal combustion engines is an effective method of reducing NOx emissions while improving efficiency. However, insufficient mixing between fresh air and exhaust gas can lead to cycle-to-cycle and cylinder-to-cylinder non-uniform charge gas mixtures of a multi-cylinder engine, which can in turn reduce engine performance and efficiency. A sensor packaged into a compact probe was designed, built and applied to measure spatiotemporal EGR distributions in the intake manifold of an operating engine. The probe promotes the development of more efficient and higher-performance engines by resolving high-speed in situ CO2 concentration at various locations in the intake manifold. The study employed mid-infrared light sources tuned to an absorption band of CO2 near 4.3 μm, an industry standard species for determining EGR fraction. The calibrated probe was used to map spatial EGR distributions in an intake manifold with high accuracy and monitor cycle-resolved cylinder-specific EGR fluctuations at a rate of up to 1 kHz.

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