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Ahmed, Fatma B.M. Department of Physics, Faculty of Science, Aswan University
Esmail, Mohamed F.C. Department Mechanical Power Engineering, Faculty of Energy Engineering, Aswan University
Kawahara, Nobuyuki Department of Mechanical Engineering, Okayama University
The purpose of this study is to measure the high concentrations of CO2 near a spark plug inside an internal combustion engine, and an infrared absorption method is used for the measurement. The spark plug sensor was adapted to a compression-expansion machine, and the CO2 concentration near the spark plug was measured by adding a gas mixture, including CO2 to imitate EGR. Next, the EGR ratio was changed from 10 to 40%, and the CO2 concentration was measured. The effect of the CO2 on the flame propagation was investigated by visualizing the bottom view of the compression-expansion machine. The measurements of CO2 mass concentration are in agreement with those predicted by direct-absorption spectroscopy fundamental theory from the crank angle −60 to −15 deg ATDC. The error was less than 20%, and under the conditions with an EGR ratio of 20–40%.
The purpose of this study is to measure the high concentrations of CO2 near a spark plug inside an internal combustion engine, and an infrared absorption method is used for the measurement. The spark...
Infrared absorption method
Spark plug sensor
Ain Shams Engineering Journal
© 2019 Ain Shams University. Production and hosting by Elsevier B.V.
Fatma B.M. Ahmed, Mohamed F.C. Esmail, Nobuyuki Kawahara, Eiji Tomita, CO2 concentration measurements inside expansion-compression engine under high EGR conditions using an infrared absorption method, Ain Shams Engineering Journal, 2019, , ISSN 2090-4479, https://doi.org/10.1016/j.asej.2019.12.003.