急速停止機関を用いたディーゼル機関の研究 : 第2報,燃焼室形状とスワール比

抄録

In a small direct injection (D. I.) diesel engine, a part of the injected fuel remains on the cold combustion chamber wall after the burning period. In the previous report, it was shown that this amount of fuel decreases with a shortening of the ignition lag. In this paper, effects of combustion chamber shape and intake swirl on the adhered fuel were investigated. As the experimental results it was found that in the shallow bowl and square chamber, the adhered fuel decreases with increasing swirl ratio, however, in a deep type and a squish type with small lip, a misfire takes place at higher swirl ratios.