某大功率柴油机应用米勒循环的仿真研究  

Simulation study on a heavy-duty engine using miller cycle

作　　者：倪益民[1] 张洪涛[1,2] 姜峰[1,2] 

机构地区：[1]广西科技大学汽车与交通学院,广西柳州545006 [2]广西科技大学车辆动力与新能源重点研发中心,广西柳州545006

出　　处：《广西科技大学学报》2014年第4期78-82,共5页Journal of Guangxi University of Science and Technology

基　　金：广西自然科学基金项目(2013GXNSFAA019317);广西汽车零部件与整车技术重点实验室建设项目(14-A-01-04);广西科技大学科学基金项目(校科自1307109)资助

摘　　要：为对某大功率涡轮增压柴油机应用米勒循环进行仿真计算研究,利用GT-Power软件建立该涡轮增压柴油机物理模型,对该柴油机进行试验,验证物理模型的准确性,运用米勒循环选出该柴油机较优进气门提前关闭角.结果表明:综合该柴油机的动力、经济和排放性能得出,较优进气门提前关闭角为下止点前40℃A,较优喷油提前角为上止点前8℃A.The miller cycle simulation research of a heavy duty turbo-charged diesel engine was conducted. The physical model of the turbo-charged diesel engine was established by the software GT-power. In order to calibrate the physical model, experiments were carried out on the diesel engine. A relatively better advance intake valve closing angle of the diesel engine was chosen by the use of miller cycle. On the basis of the angle, the effects of injection timing on the power,economy and NOX emission were computed. A relatively better injection advance angle was chosen. Considering the whole performance of the power, economy and emission, the relatively better advance intake closing angle was set 40°CA before BDC, and the injection advance angle was set 8°CA before TDC.

关 键 词：柴油机 米勒循环 喷油正时 动力性 

分 类 号：TK42[动力工程及工程热物理—动力机械及工程]