高粘度油のディーゼル機関噴射特性に及ぼす影響

概要

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Generally speaking, the injection characteristics with heavy, fuel operation is different from that with marine diesel oil in diesel engines, and the fuel viscosity exerts a great influence on the injection characteristics.<BR>In order to design the injection system suitably, the influence of the fuel viscosity on the injection characteristics should be understood. In response, a series of experiments and simulation calculations have been carried out.<BR>As a result, it is obtained that the decrease of leakage from plunger clearance (up to 50cSt) and the decrease of flow coefficient at nozzle hole (more than 50cSt) exert an influence on the injection characteristics at increasing fuel viscosity. Moreover, it could be said that the optimum viscosity at the inlet of the injection pump is less than 15 - 20cSt in the range of conventional injection system.<BR>This paper describes descussions on major factors and these results.
社団法人日本マリンエンジニアリング学会の論文