Measurement of hydrocarbon fuel concentration by means of infrared absorption technique with 3.39 μm He-Ne laser

Sadami Yoshiyama, Yoshisuke Hamamoto, Eiji Tomita, Ken Ichi Minami

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The infrared absorption technique with a 3.39 μm He-Ne laser is useful for measuring hydrocarbon concentrations. First, molar absorption coefficients of propane or methane for the 3.39 μm wavelength were investigated in the temperature range of 285-420 K and in the pressure range of 100-800 kPa. It was found that the molar absorption coefficient, ∈, is independent of temperature, and that pressure has little effect on ∈ in propane, but a strong effect in methane. Second, by applying this technique to a spark ignition engine, the fuel concentration in the vicinity of a spark plug and the hydrocarbon concentration in the exhaust pipe were measured under the conditions of no residual gas and homogeneous mixture. For the lean mixture, although cycle-to-cycle fluctuation of the fuel concentration was very small, the fluctuation of pressure in the cylinder was large.

Original languageEnglish
Pages (from-to)339-345
Number of pages7
JournalJSAE Review
Volume17
Issue number4
DOIs
Publication statusPublished - Oct 1996

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Infrared absorption
Hydrocarbons
Propane
Lasers
Methane
Spark plugs
Engine cylinders
Internal combustion engines
Pipe
Wavelength
Temperature
Gases

ASJC Scopus subject areas

  • Automotive Engineering

Cite this

Measurement of hydrocarbon fuel concentration by means of infrared absorption technique with 3.39 μm He-Ne laser. / Yoshiyama, Sadami; Hamamoto, Yoshisuke; Tomita, Eiji; Minami, Ken Ichi.

In: JSAE Review, Vol. 17, No. 4, 10.1996, p. 339-345.

Research output: Contribution to journalArticle

Yoshiyama, Sadami ; Hamamoto, Yoshisuke ; Tomita, Eiji ; Minami, Ken Ichi. / Measurement of hydrocarbon fuel concentration by means of infrared absorption technique with 3.39 μm He-Ne laser. In: JSAE Review. 1996 ; Vol. 17, No. 4. pp. 339-345.
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