3104 IDI6ストロークディーゼル機関の特性(G07-1 燃焼制御(1),G07 エンジンシステム)

概要

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Fundamental characteristics of six-stroke diesel engine was investigated experimentally. This engine has six processes per one cycle, i.e. intake, 1st.compression, 1st.combustion, 2nd.compression, 2nd.combustion and exhaust. By applying the direct EGR in the second combustion process, NO concentration could be reduced. However, much soot was exhausted compared with the conventional engine. To improve the fuel mixing at the second combustion process, a sub-combustion chamber, which could induce the strong combustion gas flow, was set in the engine. As the result, the NO concentration reduced drastically and soot reduced a little. Also from the measurement of PM size distribution, the particle diameter of PM generated from six-stroke engine was over 200nm, which could be trapped easily by using a diesel particulate filter.
一般社団法人日本機械学会の論文
2005-09-18