火花点火機関から排出される未燃炭化水素に及ぼすリングクレビスの効果

概要

論文の詳細を見る
Unreacted fuel stored in ring crevice volumes is thought to be a significant source of hydrocarbon emissions effluent from ignition engines. If the ring crevice is designed with a wider clearance, the unreacted fuel will be reduced because the flame can propagate into the crevice. The authors have determined the conditions of flame propagation by using a thin cylindrical bomb with a crevice on the bottom and a four-stroke SI engine, and obtained the following results. If the quenching distance, calculated with pressure on the arrival of the flame above the crevice, is shorter than the width of the crevice in the bomb, the flame is found to enter it. Furthermore it is confirmed that this result can be applied to spark ignition engines.
一般社団法人日本機械学会の論文
1987-08-25