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Development of Diesel Opacimeter for Real-Time Measurement of low Concentration Smoke
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English
Abstract
This paper discusses some aspects of the development of opacimeters for the real-time measurement of low-concentration diesel exhaust smoke, such as that which might be emitted from engines equipped with Diesel Particulate Filters (DPFs). Several types of opacimeters, all based on the absorption of light by the smoke, were developed as part of efforts to improve the sensitivity of this type of detection system.
The way in which detection sensitivity was affected by the wavelength of the light source and the smoke particulate size distribution was examined and it was shown that both parameters have some effect. However, since the, particulate size distribution is relatively unaffected by the use of DPF systems, the sensitivity of the opacimeters described here is not changed as a result of using this type of filter.
The experimental opacimeters developed in this study are capable of measuring smoke with 0.05% opacity (approximately the level which might be expected from engines equipped with DPF systems) with good signal-to-noise ratio.
Citation
Saito, K., "Development of Diesel Opacimeter for Real-Time Measurement of low Concentration Smoke," SAE Technical Paper 881319, 1988, https://doi.org/10.4271/881319.Also In
References
- Japar Steven M. Szkarlat Ann Cuneo “Real-Time Measurements of Diesel Vehicle Exhaust Particulate Using Photoacoustic Spectroscopy and Total Light Extinction” SAE Paper No. 811184 1981
- Gerke Daniel H. “Real-Time Measurement of Diesel Particulate Emissions with a Light Extinction Opacity Meter” SAE Paper No. 830183 1983
- Bascom Roger C. Chiu Wen S. Padd Ronald J. “Measurement and Evaluation of Diesel Smoke” SAE Paper No. 730212 1973
- Saito K. “Measurement of Low Level Diesel Exhaust Smoke by High Sensitivity Opacity Heter” Transactions of SAE of Japan 36 1987
- Lee, S. C. Tien, C. L. “Optical Constants of Soot in Hydrocarbon flames” Proceedings of 18th International Symposium on Combustion Combustion Institute 1981 1159
- Kontani K. Gotoh S. “Effects of Particle Size Distribution on Soot Particle Measurement by Transmissive Light Extinction Method” SAE Paper No. 861234 1986
- Kontani K. Gotoh S. “Measurement of Soot in a Diesel Combustion Chamber by Light Extinction Method and In-Cylinder Observation by Highspeed Shadowgraphy” SAE Paper No. 831291 1983