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New Measuring Method for Blue and White Smoke in Diesel Engines by a Digital Camera System
Technical Paper
1999-01-1503
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The blue and white smoke (cold smoke) emitted from diesel engines during warm up at low temperatures and idling conditions contains pollutant gases which irritate eyes and nose, and reductions in this irritating, odorous gas have become important with the increasing numbers of DI diesel engine vehicles. To assess the blue and white smoke a qualitative assessment method is necessary, though, there are no simple and exact measuring methods.
In this study a new assessment method using a digital camera and photo analysis system with a computer is introduced. With this method the luminance of the cold smoke is displayed as 8 bit data, and a quantitative evaluation is simple, when the influence of sunshine is corrected for the smoke luminance. This paper describes the correction method for the sunshine illumination and the technique for taking the photographs.
It was found that the new method with the digital camera system has a good correlation with evaluations by experienced persons, and that it is simple and exact.
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Citation
Tsunemoto, H., Ishitani, H., Yamazaki, S., and Nakajima, S., "New Measuring Method for Blue and White Smoke in Diesel Engines by a Digital Camera System," SAE Technical Paper 1999-01-1503, 1999, https://doi.org/10.4271/1999-01-1503.Also In
References
- Tanaka T. et al. “Development of a Diesel Odor Measurement Method and its Application to Odor Reduction” SAE paper 920726 1992
- Roy Murari M. et al. “Reduction of Exhaust Odor and Eye Irritation in DI Diesel Engine” Proceedings of IPC 9, paper No. 971258 1997
- Tahara Y. Akasaka Y. “Effects of Fuel Properties on White Smoke Emission from the Latest Heavy-Duty DI Diesel Engine” SAE paper 952354 1995