气门重叠角对天然气掺氢发动机性能的计算分析  

Computational analysis on the effect of valve overlap angle on the performance of engine of natural gas mixture with hydrogen

作　　者：李春青[1] 姜峰[1] 陈乾 莫清烈 曾维铨[1] LI Chunqing;JIANG Feng;CHEN Qian;MO Qinglie;ZENG Weiquan(School of Automobile and Traffic Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Guangxi Automobile Tractor Research Institute,Liuzhou 545006,China)

机构地区：[1]广西科技大学汽车与交通学院,广西柳州545006 [2]广西汽车拖拉机研究所,广西柳州545005

出　　处：《广西科技大学学报》2018年第2期37-42,共6页Journal of Guangxi University of Science and Technology

基　　金：广西高校科学技术研究项目(KY2015YB168);广西科技大学科学基金项目(校科自1711309)资助

摘　　要：通过改变发动机配气相位,实现不同气门重叠角方案,研究不同气门重叠角大小对发动机各项性能的影响关系.利用GT-Power软件建立了某款天然气掺氢发动机仿真模型,分析了两种配气方案下气门重叠角对发动机扭矩、排放的影响规律,最终确定发动机在全负荷工况时1 400 r/min和2 300 r/min转速下配气方案2对应20°CA气门重叠角为最佳研究方案,该研究方法为气门重叠角的实际应用提供理论指导.By changing the gas phase of the engine to achieve different valve overlap angle,we study the effect of valve overlap angle on engine performance in this paper.GT-Power software is used to establish the simulation model of engine fueled with natural gas hydrogen blends.The effects of two kinds of valve overlap angle on engine torque and emission were investigated.And valve timing case 2 which corresponds to 20°CA valve overlap angle finally is determined on the condition of the whole load of 1400r/min and 2300r/min as the best research program.The study provides theoretical guidance for the application of the valve overlap angle.

关 键 词：气门重叠角 配气相位 天然气掺氢 发动机 

分 类 号：TB24[一般工业技术—工程设计测绘]