预喷射对生物柴油发动机排放性能的仿真分析  

Simulation Research on Pre-Injection Diesel Engine Emissions Performance by Using Bio-Diesel

作　　者：姜峰[1] 张洪涛[1] 叶燕帅[1] 

机构地区：[1]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：《计算机仿真》2015年第5期177-181,共5页Computer Simulation

基　　金：广西自然科学基金项目(2013GXNSFAA019317);广西科技大学科学基金项目(校科自1307109);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)

摘　　要：研究预喷射对生物柴油发动机排放性能问题,针对能源紧缺与排放法规,为了进一步降低柴油机排放,采用生物柴油替代石化柴油方法进行研究,利用GT-Suite软件建立了生物柴油发动机仿真模型,通过台架试验验证了仿真模型的准确性。对发动机在2200r/min时,采用不同生物柴油掺混比、预喷射量和预喷-主喷间隔对发动机排放和扭矩影响,建立了仿真优化方案,进行仿真的结果表明,生物柴油掺混比为5%、预喷量为5%、预喷-主喷间隔为10°CA方案对NOx和Soot排放与扭矩最优,表明上述研究对生物柴油发动机进一步优化预喷射方案具有借鉴意义。The research of pre-injection on bio-diesel engine emissions performance is a cutting-edge technique to deal with energy shortages and increasingly stringent emissions regulations. In order to reduce emissions for diesel engine, the GT-Suite software is used to establish the simulation model of bio-diesel engine, and simulation model is valid based on the comparison with test bench results. The simulation cases are established under the engine at 2200 r/min, the influence on torque and emissions of the blending ratio of bio-diesel, pre-injeetion quantity and pre-main interval angle are studied. The result shows that, when the blending ratio of bio-diesel is 5%, pre-injection quantity is 5% and pre-main interval angle is 10°CA, it can get the optimal case with low NOx, Soot emissions and torque.

关 键 词：预喷射 生物柴油 发射 性能 

分 类 号：TB24[一般工业技术—工程设计测绘]