3次元拡散噴霧DIディーゼル機関に関する研究(NICS-MH) : 燃料衝突壁面幅が機関性能に与える影響 (<小特集>エンジンシステムの新展開)

概要

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A three-dimensional diffusing spray using the multi-impingement-wall head (MIW head) has been proposed to form air-fuel mixtures in a single DI diesel engine. In this study, the effect of the width of the MIW head on spray pattern, distribution and engine performance have been investigated. In the fuel spray and engine performance experiments, an optimal width of the MIW head results in the collision of fuel droplets at an advantageous position in the combustion chamber for obtaining a good fuel spray distribution. The minimum BSFC is almost the same value as that of a single DI diesel engine, the HC and smoke densities are reduced and the NO_x density show a tendency to increase under partial load and to decrease under full load. A relatively slow heat-release rate and maximum temperature duration of the MIW head can be obtained by shortening the ignition delay.
社団法人日本機械学会の論文
1995-10-25