燃料噴霧のサイクル変動が未然炭化水素の排出に及ぼす影響 : サック内流れ,針弁挙動と噴霧サイクル変動の可視化

概要

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To study cycle-to-cycle variation of diesel spray direction, spray shape, needle valve motion and sac inner flow of multi-hole-type nozzles were imaged using a high-speed drum camera and two CCD cameras. It was observed that needle valve offset and one-sided sac inner flow during fuel injection induced the fluctuation of spray direction and deformation of spray shape. Experiments on the effect of cycle-to-cycle variation of the spray on emissions under no load and lower speed of the engine revealed that the suppression of the variation yielded reduced hydrocarbon emission and white smoke.
一般社団法人日本機械学会の論文
1996-04-25