可变燃烧室汽油/CNG双燃料发动机性能仿真  

Performance Simulation of Gasoline/CNG Dual Fuel Engine with VCC Piston Chamber

作　　者：刘红雷[1] 董健[1] 贺玉海[1] 潘晴川[1] 陈克朋[1] 张智杰[1] 

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,湖北武汉430063

出　　处：《内燃机》2013年第5期28-31,47,共5页Internal Combustion Engines

摘　　要：介绍VCC(可变燃烧室)汽油/CNG双燃料发动机的性能仿真。采用AVL Boost软件建立的仿真模型可以应用于原型492汽油发动机、CNG发动机及其相对应的VCC活塞发动机,对比分析了这4种发动机模式的燃油经济性和动力性。仿真计算表明:VCC活塞技术可以有效改善低负荷工况时汽油模式或者CNG燃料模式的燃油经济性;无论是VCC发动机模式或者常规发动机模式,预混合CNG燃料都会降低充气效率,额定负荷工况时CNG燃料导致充气效率下降9.3%左右;无论是VCC发动机模式或者常规发动机模式,预混合CNG燃料都会出现动力性下降现象,额定负荷工况时CNG燃料导致发动机动力性下降15%左右。The paper introduces performance simulation of VCC gasoline/CNG dual fuel engine. The simulated model established by using AVL Boost software can be applied to original mode 492 gasoline engine, CNG engine and corresponding VCC piston engine. It analyzes comparatively their fuel economical efficiency and dynamic property. The simulation calculation shows： VCC piston technology can improve effectively fuel economical efficiency for gasoline mode or CNG fuel mode ion low load; No matter which mode, VCC engine mode or conventional engine mode, premixing CNG fuel can lower volumetric efficiency and CNG fuel can lead to lower volumetric efficiency by 9.3% or so in rated load; No matter which mode, VCC engine mode or conventional engine mode, premixing CNG fuel will lower dynamic property, CNG fuel can lead to lower dynamic property by 15% or so in rated load.

关 键 词：可变燃烧室 双燃料 压缩比 仿真 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]