Characteristics of Diesel/N-Butanol Blend on a Common Rail Diesel Engine with Exhaust Gas Recirculation  

作　　者：Yanfei Chen Jingjing He Hao Chen Xin Su Bin Xie 

机构地区：[1]Nanjing Vocational Institute of Transport Technology,Nanjing,211188,China [2]School of Automobile,Chang’an University,Xi’an,710064,China

出　　处：《Energy Engineering》2022年第3期1239-1259,共21页能源工程（英文）

基　　金：The paper is supported by Innovation Capability Support Program of Shaanxi(Hao Chen received the Grant and Grant No.is 2021TD-28);Key Research and Development Program of Shaanxi(Hao Chen received the Grant and Grant No.is 2019ZDLGY15-07).

摘　　要：20%n-butanol is blended in diesel by volume(noted as D80B20)and experiment has been carried out to study the effect on the combustion and emission characteristics based on a common rail diesel engine with exhaust gas recirculation(EGR)system.The results reveal thatD80B20 has longer ignition delay,shorter combustion duration and higher maximumin-cylinder temperature than pure diesel(noted as D100).Further,the number concentration and volume concentration of ultrafine particles decrease significantly while NO_(X) emissions increase a little with the addition of n-butanol.When the exhaust gas is induced into cylinder,NO_(X) emissions significantly decrease and ultrafine particles emissions increase.The number geometric mean diameters and volume geometricmean diameters of ultrafine particles increase withEGR ratio.Compared toD100 without EGR,D80B20 with 20%EGR ratio can reduce both NO_(X) and ultrafine particles emissions at 0.14MPa BMEP and 0.56MPa BMEP.

关 键 词：N-BUTANOL ultrafine particles COMBUSTION EMISSION common rail diesel engine 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]