赤外線吸収コンピュータトモグラフィ法による炭化水素系気化燃料濃度の空間分布解析

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書誌事項

タイトル別名
  • Infrared Light Absorption Computed Tomography Measurements for Gaseous Hydrocarbon Fuel Concentration
  • 赤外線吸収コンピュータトモグラフィ法による炭化水素系気化燃料濃度の空間分布解析--計測法とそのエンジン内部流および拡散燃焼場への応用
  • セキガイセン キュウシュウ コンピュータトモグラフィホウ ニ ヨル タンカスイソケイ キカ ネンリョウ ノウド ノ クウカン ブンプ カイセキ ケイソクホウ ト ソノ エンジン ナイブリュウ オヨビ カクサン ネンショウバ エ ノ オウヨウ
  • 計測法とそのエンジン内部流および拡散燃焼場への応用
  • The Method and Its Application to Incylinder Steady Flow and Diffusion Flame Fields

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抄録

A system to measure gaseous fuel distribution was devised, which is based on infra-red light absorption by carbon-hydrogen stretch mode of vibration and the computed tomography method (IR-CT method). Since the incident light intensity from an infra-red laser fluctuated temporally, the effect was diminished by dividing the beam to two, one of which was monitored for better measurement accuracy. It was found that the error due to the laser fluctuation was within 0.8% and the feasibility of the IR-CT method was confirmed by applying the system to the measurements of the methane fuel concentration in an internal combustion engine model and a burner with diffusion flame. Furthermore, calibration to determine absorptivity was undertaken, which was used for the conversions from the measured line absorption coefficients to spatial fuel concentration in the combustion field.

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