生物柴油掺烧率对柴油机燃烧特性影响的数值模拟  

Numerical simulation of the effect of bio-diesel blending rate on combustion characteristics of diesel engine

作　　者：沈凌飞[1] 汤东[1] 吴宇哲[1] 张明[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《中国农机化学报》2015年第5期278-282,共5页Journal of Chinese Agricultural Mechanization

基　　金：江苏省国际合作项目(BZ2012025);内燃机燃烧学国家重点实验室开放课题(K2014-9)

摘　　要：采用数值模拟和试验研究相结合的方法,分析186FA柴油机掺烧不同比例生物柴油后的燃烧特性。在全负荷和50%负荷下,对比分析不同掺烧率时的放热率,模拟燃油浓度场、温度场的发展情况。结果表明:掺烧生物柴油后,燃烧持续期延长,存在较低平均温度和局部较高的燃烧温度。The combustion characteristics of 186FA diesel with different proportions of bio-diesel were analyzed through the combination of numerical simulation and experimental study. The release rates were compared and analyzed at the full load and 50% load. The development of fuel concentration field and temperature field were simulated. When diesel is blended with bio-diesel, the combustion duration is longer, and the average temperature becomes lower but some local combustion temperature gets higher.

关 键 词：生物柴油 掺烧率 燃烧模拟 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]