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Local A/F Measurement by Chemiluminescence OH*, CH* and C2* in SI Engine
Technical Paper
2001-01-0919
ISSN: 0148-7191, e-ISSN: 2688-3627
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SAE 2001 World Congress
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English
Abstract
The chemiluminescence emission intensity can be measured with high temporal resolution, leading to understanding the chemical reaction. Time-series chemiluminescence measurements of OH*, CH* and C2* were carried out to understand flame propagation speed, its thickness and A/F ratio of combustion status. The optical piston head (quartz) allows us to visualize combustion chamber. It is found that the chemiluminescence intensity ratio of CH*/OH* and C2*/OH* can estimate local A/F. The A/F measured by O2 sensor was used for evaluation and the results indicate this method can be applicable to estimate A/F.
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Ikeda, Y., Kaneko, M., and Nakajima, T., "Local A/F Measurement by Chemiluminescence OH*, CH* and C2* in SI Engine," SAE Technical Paper 2001-01-0919, 2001, https://doi.org/10.4271/2001-01-0919.Also In
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