发火顺序对增压柴油机进气不均匀性影响的研究  

Influence of Firing Order on Intake Air Nonuniformity for Turbocharged Diesel Engine

作　　者：杜巍[1] 刘福水[1] 乔葳蕤 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]湖南奔腾动力科技有限公司,长沙410000

出　　处：《内燃机工程》2011年第4期87-92,共6页Chinese Internal Combustion Engine Engineering

基　　金：国家部委预研项目(40402020101)

摘　　要：在某V型多缸柴油机性能试验和多个气缸压力测量的基础上,对该柴油机的一维性能仿真计算模型进行了标定和校核,并应用验证后的模型计算和分析了该柴油机不同曲轴结构对应的发火顺序时各缸进气流量的不均匀性。计算结果表明:不同发火顺序造成各缸进气门前压力波动的规律差异很大,造成各缸进气不均匀度的差异也很大,相比之下,平面曲轴对应的发火顺序造成的进气不均匀度较小,而十字曲轴、成对曲轴和混合曲轴对应的发火顺序造成的进气不均匀度较大。A thermodynamic model for a turbocharged V-type eight-cylinder diesel engine was established and calibrated to investigate the dependence of intake air nonuniformity on various firing orders corresponding to different crank shaft structures.Results indicate that each firing order results indifferent intake pressure fluctuation in front of the intake valves causing different degrees of intake air nonuniformity.Of them,the intake air nonuniformity for the plane crankshaft is smallest and that for others,e.g.the cross,twin and mixed ones,are larger.

关 键 词：内燃机 增压柴油机 发火顺序 进气不均匀性 

分 类 号：TK423.4[动力工程及工程热物理—动力机械及工程]