Non-intrusive measurements are always desirable in flame research, particularly in the study of internal combustion engines where intrusive measurements are usually not applicable. With the use of digital image processing and color analysis, the imaging system can be turned into an abstract multi-spectral system to determine the characteristics of flame emission. First this study conducts a precise calibration to make up a spectral correlation between the camera spectrum responses and the radical emissions of an ethanol diffusion flame. The color model of HSV is used to represent the camera spectrum responses. The actual wavelength of each radical of the diffusion flame has also been examined using a spectrograph. Subsequent experiment is the application of the spectral correlation into a direct injection spark ignition optical engine to research the combustion behavior. Two fuel injectors, different in nozzle configuration, were utilized and tested individually. The high-speed imaging system films hundreds of engine combustion cycles, and each cycle covers the propagation from the flame ignition stage towards the end of combustion. In those cycles, the presence of radicals of interest was captured and represented by Hue degree.
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ASME 2018 Internal Combustion Engine Division Fall Technical Conference
November 4–7, 2018
San Diego, California, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-5198-2
PROCEEDINGS PAPER
Flame Emission Characteristics in a Direct Injection Spark Ignition Optical Engine Using Image Processing Based Diagnostics Available to Purchase
Zhe Sun,
Zhe Sun
Shanghai Jiao Tong University, Shanghai, China
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Zhen Ma,
Zhen Ma
Shanghai Jiao Tong University, Shanghai, China
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Xuesong Li,
Xuesong Li
Shanghai Jiao Tong University, Shanghai, China
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Min Xu
Min Xu
Shanghai Jiao Tong University, Shanghai, China
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Zhe Sun
Shanghai Jiao Tong University, Shanghai, China
Zhen Ma
Shanghai Jiao Tong University, Shanghai, China
Xuesong Li
Shanghai Jiao Tong University, Shanghai, China
Min Xu
Shanghai Jiao Tong University, Shanghai, China
Paper No:
ICEF2018-9746, V001T03A028; 10 pages
Published Online:
January 3, 2019
Citation
Sun, Z, Ma, Z, Li, X, & Xu, M. "Flame Emission Characteristics in a Direct Injection Spark Ignition Optical Engine Using Image Processing Based Diagnostics." Proceedings of the ASME 2018 Internal Combustion Engine Division Fall Technical Conference. Volume 1: Large Bore Engines; Fuels; Advanced Combustion. San Diego, California, USA. November 4–7, 2018. V001T03A028. ASME. https://doi.org/10.1115/ICEF2018-9746
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