直接噴射式ディーゼル機関における排気再循環の効果 : 第1報,すす排出への影響
1985 年 51 巻 463 号 p. 1105-1112
詳細
1985 年 51 巻 463 号 p. 1105-1112
By using a direct injection diesel engine, the effect of exhaust gas recirculation (EGR) on soot emission was investigated. It was revealed that EGR had both effects of soot promotion and suppression. Soot emission was suppressed when the premixed (initial rapid) combustion fraction of the two combustion patterns was increased, which was accomplished by throttling the intake valve equipped the engine or advancing the injection timing. It was also suggested that the effect of EGR on soot emission should not ascribe only the physical or thermal properties of the inert gases within the exhaust gas, but some chemical properties of CO2. Because it was shown that only CO2 had the effect of soot suppression under some conditions.
