文献类型：会议论文

英文题名：Effect of Double Injector on Combustion Process in a 396 Series Diesel Engine

作者：Liang, Yu Zhou, Liying Xu, Mingfei Yao, Guwen

第一作者：Liang, Yu

通信作者：Zhou, LY[1];Zhou, LY[2]

机构：[1]Guiyang Univ, Sch Mech Engn, 103 Jianlong Rd, Guiyang 550005, Peoples R China;[2]Guizhou Inst Technol, Sch Mech Engn, 1 Caiguan Rd, Guiyang 550003, Peoples R China

第一机构：Guiyang Univ, Sch Mech Engn, 103 Jianlong Rd, Guiyang 550005, Peoples R China

通信机构：corresponding author), Guiyang Univ, Sch Mech Engn, 103 Jianlong Rd, Guiyang 550005, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Mech Engn, 1 Caiguan Rd, Guiyang 550003, Peoples R China.|贵州理工学院机械工程学院;贵州理工学院;

会议论文集：5th International Conference on Environmental Science and Material Application (ESMA)

会议日期：DEC 15-16, 2019

会议地点：Xian, PEOPLES R CHINA

语种：英文

外文关键词：3D modeling - Alcohol fuels - Biodiesel - Computational fluid dynamics - Diesel engines - Engine cylinders - Nuclear fuels

年份：2020

摘要：The 396 series diesel engine has high performance, reliability and long service life, which has been widely used in many fields including ship, vehicle and industrial power unit. With the improved injection system and dual-injector in each cylinder, two injectors of the diesel can spray diesel at the same time; or one injector sprays ignition diesel and the other injector sprays biodiesel or alcohol fuel. A 3D combustion model of the 396 series diesel engine with flat-top convex basin combustion chamber is established by using the computational fluid dynamics software FIRE, and the combustion process when uniform 5-hole and 8-hole injectors and 4-hole dual-injector are adopted is simulated to compare and analyze the fuel spray, ignition start point, combustion pressure, combustion heat release rate, average temperature in cylinder and NO emission. Compared with the diesel engine adopting 8-hole injector, the diesel engine adopting 4-hole dual-injector has a wide spray space distribution area, high pressure and temperature in cylinder, and high thermal efficiency. The combustion process with injection duration of 26.84 degrees CA, 22 degrees CA and 20 degrees CA for 396 series diesel engine adopting 4-hole dual-injector is simulated respectively, and the simulation result shows that the shorter injection duration can bring the higher maximum pressure and the maximum average temperature in cylinder, the shorter ignition delay period, the advanced ignition start point, the larger peak value of combustion heat release rate, the more concentrated combustion heat release, the higher NO emission. These three cases have almost the same accumulated heat release and the relatively complete fuel utilization. The proper injection duration shall be selected based on comprehensive consideration of the pressure in cylinder, effective power and NO emission. This research result is conductive to improve the combustion process of the 396 series diesel engine with the dual-injector and provides a basis for using biodiesel and alcohol fuel in the diesel engine.