Gas temperature measurement by laser interferometry (Application for measurement of absolute value of temperature in internal combustion engine cylinder)

Eiji Tomita, Yoshisuke Hamamoto, Dongmin Jiang

Research output: Contribution to journalArticle

Abstract

A fiber optical interferometer system which was previously reported was used. The reported method was useful for measuring only the temperature change. However, in this study, absolute value of temperature could be measured by changing the density of the reference gas according to the density change of the test gas. After confirmation by temperature measurement in a constant-volume vessel, this method was applied to measure the gas temperature in a specially designed spark-ignition engine cylinder. The measured temperature satisfactorily agreed with the value obtained using a resistance wire thermometer. By combining this method with the method reported previously, the absolute value of gas temperature in an engine cylinder can be measured.

Original languageEnglish
Pages (from-to)2239-2244
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume63
Issue number610
Publication statusPublished - Jun 1997
Externally publishedYes

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Laser interferometry
Gas fuel measurement
internal combustion engines
laser interferometry
Engine cylinders
gas temperature
Internal combustion engines
Temperature measurement
temperature measurement
engines
spark ignition
Gases
thermometers
gases
Temperature
vessels
temperature
interferometers
optical fibers
wire

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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AU - Tomita, Eiji

AU - Hamamoto, Yoshisuke

AU - Jiang, Dongmin

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AB - A fiber optical interferometer system which was previously reported was used. The reported method was useful for measuring only the temperature change. However, in this study, absolute value of temperature could be measured by changing the density of the reference gas according to the density change of the test gas. After confirmation by temperature measurement in a constant-volume vessel, this method was applied to measure the gas temperature in a specially designed spark-ignition engine cylinder. The measured temperature satisfactorily agreed with the value obtained using a resistance wire thermometer. By combining this method with the method reported previously, the absolute value of gas temperature in an engine cylinder can be measured.

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