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The Method of Measuring Air-Fuel Ratio by Radical Luminescence in High Combustion Pressure
Technical Paper
1999-01-0507
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The relations of luminous intensity of the radicals, CH, C2, and OH radical, and the equivalence ratio, ϕ under high combustion pressure region (7.0MPa maximum) were investigated. Luminous intensity of each radical and combustion pressure were experimentally obtained using a constant volume combustion chamber. It was found that luminous intensity of each radical can be expressed as a function of ϕ and the combustion pressure. The estimation of ϕ was done within the region, 0.8<ϕ<1.2 and 2.0MPa<P<7.0MPa using the ratio of luminous intensity of CH and C2 radical, and combustion pressure. The value of ϕ was estimated and compared with the actual value; the accuracy was about ±5.0%.
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Citation
Sawada, H., Suzuki, T., Oguri, Y., and Yoshida, M., "The Method of Measuring Air-Fuel Ratio by Radical Luminescence in High Combustion Pressure," SAE Technical Paper 1999-01-0507, 1999, https://doi.org/10.4271/1999-01-0507.Also In
References
- Itoh H. Hommo Y. Song J. Gomi T. “An Instantaneous Measuring Method of Air-Fuel Ratio by Luminous Intensity of Radicals” JSME B52 3362 1986
- Sohma K. Yukitake T. Azuhata S. “Application of Rapid Optical Measurement to Detect the Fluctuations of the Air-Fuel Ratio and Temerature of a Spark Ignition Engine” SAE paper 910499 1991
- Izumiya K. Yoshida M. Oguri Y. Suzuki T. Gomi T. “A Measuring Method of Air-Fuel Ratio by Radical Luminescence (The Influence of Pressure)” JSME 73 rd Symp 254 1995