GAS CONCENTRATION MEASUREMENT DEVICE

Japanese Patent JP2017083321

A

PROBLEM TO BE SOLVED: To provide a gas concentration measurement device with which it is possible to receive a portion of irradiated light and measure the concentration of a fuel gas with high accuracy, even when the intensity distribution of the irradiated light changes.SOLUTION: Provided is a gas concentration measurement device 10 for an internal combustion engine 1 that measures the concentration of a fuel gas in the combustion chamber 14 of the internal combustion engine 1 on the basis of the attenuation amount of the intensity of light (infrared ray) with which the inside of the combustion chamber 14 of the internal combustion engine 1 is irradiated. The gas concentration measurement device 10 comprises an irradiation fiber 5 for irradiating the inside of the combustion chamber 14, a reflection member 41 for reflecting the light irradiated by the irradiation fiber 5, and a light-receiving fiber 6 for receiving the light reflected by the reflection member 41, the reflection member 41 being an irregular reflection member that reflects the irradiated light irregularly.SELECTED DRAWING: Figure 2

ANDO AKIHIRO
AOCHI TAKANOBU
MORITA TOSHIKI

JP2015212446A

May 18, 2017

October 29, 2015

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NIPPON SOKEN
TOYOTA MOTOR CORP

G01N21/61; F02D35/00

JP2009042192A	2009-02-26
JP2013501893A	2013-01-17
JP2012212146A	2012-11-01
JP2005233694A	2005-09-02
JP2011501121A	2011-01-06
JPS6351261U	1988-04-06
JPS5532490U	1980-03-01

Yusuke Hiraki
Sekiya Mitsuo
Ishikawa Takiharu
Yasuhiko Mima

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