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oai:gunma-u.repo.nii.ac.jp:00003128 2023-06-19T13:11:19Z 572:575:576

The Effect of Exhaust Gas Recirculation on a Direct-Injection Diesel Engine : 2nd Report, Influence on the Diesel Knock 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2報, ディーゼルノックへの影響とその要因 The Effect of Exhaust Gas Recirculation on a Direct-Injection Diesel Engine : 2nd Report, Influence on the Diesel Knock 志賀, 聖一 7334 江原, 秀治 7335 柄沢, 隆夫 7336 倉林, 俊雄 7337 Internal Combustion Engine Direct-Injection Diesel Engine Diesel Knock Exhaust Gas Recirculation Combustion Pattern Combustion Rate of Pressure Rise application/pdf Journal Article This paper presents one of the studies which aim to reveal the capability of controlling diesel combustion by exhaust gas recirculation (EGR). In a previous paper, the effect of EGR on soot emission was examined, and it was shown that soot emission is suppressed under the condition that the mass fraction burned by spontaneous (pre-mixed) combustion is increased. In a present paper, diesel knock intensity is defined as a sound pressure distributed over 1-1.5kHz, and the effect of EGR on the diesel knock intensity is examined. The diesel knock intensity is remarkably reduced by EGR under the same operating condition as soot emission is reduced by EGR. By calculating the heat release rate based on the indicated pressure diagram, it was suggested that a reduction of knock intensity originates from the reduced reaction rate in the spontaneous ignition. The quantitative relationship between the diesel knock intensity and the maximum rate of pressure rise is also presented. journal article 日本機械学会 1985-11-25 2017-03-27 VoR application/pdf 日本機械学會論文集. B編 471 51 3817 3822 0387-5016 AN00187441 https://gunma-u.repo.nii.ac.jp/record/3128/files/B51_3817.pdf http://hdl.handle.net/10087/2620 https://gunma-u.repo.nii.ac.jp/records/3128 jpn http://ci.nii.ac.jp/naid/110002400080/ 日本機械学会 本文データは学協会の許諾に基づきCiNiiから複製したものである