新中央副室式ディーゼルエンジンのNO_x低減研究 : 第2報, 燃焼システム改善

概要

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In order to reduce NO_x emission and increase the brake thermal efficiency of a stationary diesel engine, a new prechamber, which is placed at the center of a cylinder head and has a smaller volume than conventional prechamber, was installed in a single cylinder diesel engine with a 170mm bore and 180mm stroke, and it was tested to investigate its potential. The high injection pressure, and improvement of prechamber and main chamber promoted combustion and improved the brake thermal efficiency and smoke emission. The combustion temperature and thus the NO_x emission were reduced by realizing the enlargement of jet passage area. A NO_x concentration of 184ppm (13% excess O_2) at the brake thermal efficiency of 37% was obtained with this new prechamber combustion system.
一般社団法人日本機械学会の論文
1996-09-25