Transient temperature measurement of unburned gas in an engine cylinder using laser interferometry with a fiber-optic sensor

Nobuyuki Kawahara; Eiji Tomita; Mitsuru Ichimiya; Kouji Takasu; Naoki Tsuchida; Kazuhiro Goto

doi:10.4271/2003-01-1799

Transient temperature measurement of unburned gas in an engine cylinder using laser interferometry with a fiber-optic sensor

Nobuyuki Kawahara, Eiji Tomita, Mitsuru Ichimiya, Kouji Takasu, Naoki Tsuchida, Kazuhiro Goto

School of Engineering

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

A heterodyne interferometry system with a fiber-optic sensor was developed to measure the temperature history of unburned gas in an engine cylinder. A polarization-preserving fiber and metal mirror were used as the fiber-optic sensor to deliver the test beam to and from the measurement region. This fiber-optic sensor can be assembled in the engine cylinder or the cylinder head without a lot of improvements of an actual engine. The feasibility of our system was sufficient to be applied to temperature history measurement of an unburned gas compressed by flame propagation in an engine cylinder. The resolution of the temperature measurement is approximately 0.7 K, and is dependent on both the sampling clock speed of the A/D converter and the length of the measurement region.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/2003-01-1799
Publication status	Published - 2003
Event	2003 JSAE/SAE International Spring Fuels and Lubricants Meeting - Yokohama, Japan Duration: May 19 2003 → May 22 2003

ASJC Scopus subject areas

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

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10.4271/2003-01-1799

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title = "Transient temperature measurement of unburned gas in an engine cylinder using laser interferometry with a fiber-optic sensor",

abstract = "A heterodyne interferometry system with a fiber-optic sensor was developed to measure the temperature history of unburned gas in an engine cylinder. A polarization-preserving fiber and metal mirror were used as the fiber-optic sensor to deliver the test beam to and from the measurement region. This fiber-optic sensor can be assembled in the engine cylinder or the cylinder head without a lot of improvements of an actual engine. The feasibility of our system was sufficient to be applied to temperature history measurement of an unburned gas compressed by flame propagation in an engine cylinder. The resolution of the temperature measurement is approximately 0.7 K, and is dependent on both the sampling clock speed of the A/D converter and the length of the measurement region.",

author = "Nobuyuki Kawahara and Eiji Tomita and Mitsuru Ichimiya and Kouji Takasu and Naoki Tsuchida and Kazuhiro Goto",

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doi = "10.4271/2003-01-1799",

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journal = "SAE Technical Papers",

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T1 - Transient temperature measurement of unburned gas in an engine cylinder using laser interferometry with a fiber-optic sensor

AU - Kawahara, Nobuyuki

AU - Tomita, Eiji

AU - Ichimiya, Mitsuru

AU - Takasu, Kouji

AU - Tsuchida, Naoki

AU - Goto, Kazuhiro

PY - 2003

Y1 - 2003

N2 - A heterodyne interferometry system with a fiber-optic sensor was developed to measure the temperature history of unburned gas in an engine cylinder. A polarization-preserving fiber and metal mirror were used as the fiber-optic sensor to deliver the test beam to and from the measurement region. This fiber-optic sensor can be assembled in the engine cylinder or the cylinder head without a lot of improvements of an actual engine. The feasibility of our system was sufficient to be applied to temperature history measurement of an unburned gas compressed by flame propagation in an engine cylinder. The resolution of the temperature measurement is approximately 0.7 K, and is dependent on both the sampling clock speed of the A/D converter and the length of the measurement region.

AB - A heterodyne interferometry system with a fiber-optic sensor was developed to measure the temperature history of unburned gas in an engine cylinder. A polarization-preserving fiber and metal mirror were used as the fiber-optic sensor to deliver the test beam to and from the measurement region. This fiber-optic sensor can be assembled in the engine cylinder or the cylinder head without a lot of improvements of an actual engine. The feasibility of our system was sufficient to be applied to temperature history measurement of an unburned gas compressed by flame propagation in an engine cylinder. The resolution of the temperature measurement is approximately 0.7 K, and is dependent on both the sampling clock speed of the A/D converter and the length of the measurement region.

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Transient temperature measurement of unburned gas in an engine cylinder using laser interferometry with a fiber-optic sensor

Abstract

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