In-situ fuel concentration measurement near spark plug by 3.392 μm infrared absorption method-application to spark ignition engine

Atsushi Nishiyama, Nobuyuki Kawahara, Eiji Tomita

Research output: Contribution to journalConference article

9 Citations (Scopus)

Abstract

This study measured the fuel concentration near a spark plug using a laser infrared absorption method. An IR spark plug sensor with a double-pass measurement length was developed. A He-Ne laser with a wavelength of 3.392 μm, which coincides with the absorption line of hydrocarbons, was used as the light source. In order to confirm the measurement accuracy, the concentrations of a methane-air mixture were measured in a compression-expansion engine. Then, the IR spark plug sensor was used for measurements in a 4-stroke spark-ignition engine fuelled with isooctane. The air/fuel ratio measured using this system clearly agreed with the mean air/fuel ratio.

Original languageEnglish
JournalSAE Technical Papers
DOIs
Publication statusPublished - Jan 1 2003
Event2003 SAE World Congress - Detroit, MI, United States
Duration: Mar 3 2003Mar 6 2003

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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