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Analysis of Radical Luminescence Image At Atac Operation in Methanol-Fueled Two-Stroke Engine
Published July 18, 1995 by Society of Automotive Engineers of Japan in Japan
To investigate lean burn limit of ATAC (Active Thermo-Atmosphere Combustion), the cycle fluctuation of cylinder pressure and ignition timing was analyzed statistically in methanol fueled two stroke ATAC test engine. And to analyze the combustion mechanism of ATAC, the image of radical luminescence in the combustion chamber was observed in gasoline fueled ATAC test engine equipped with a quartz window at the cylinder head. It was found that ATAC was "bulk like" and/or "non-propagate" combustion initiated at whole area of the combustion chamber and that thermal efficiency could be improved by lean pre-mixed gas due to delay auto ignition of ATAC.