基于实验设计技术的增程式发动机性能提升研究  

Research on Performance Improvements of Extended-range Engines Based on DOE Technology

作　　者：程雪利 丁树勇 安林超 CHENG Xueli;DING Shuyong;AN Linchao(Department of Mechanical Engineering,Henan Institute of Technology,Xinxiang,Henan,453002;Suzhou Automobile Research Institute of Tsinghua University,Suzhou,Jiangsu,215134)

机构地区：[1]河南工学院机械工程系,新乡453002 [2]清华大学苏州汽车研究院,苏州215134

出　　处：《中国机械工程》2018年第23期2778-2782,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50775155);新乡市重点科技攻关计划资助项目(CXGG16021)

摘　　要：以某1.5L增程式发动机为研究对象,建立并标定其CAE仿真模型,利用实验设计(DOE)技术对气门升程曲线、进气歧管及进气道结构进行优化研究;对改型后的增程式发动机进行了全面的台架试验标定。实验和分析结果表明:新的气门升程曲线提高了低速段扭矩,尤其是转速为1 200r/min和2 800r/min时,扭矩分别增大了10%和12%;优化了进气道结构,平均滚流比大幅提升至原来的1.5～2.2倍;优化后的增程式发动机高效率区的实验等油耗值为250g/(kW·h),相对原机的实验等油耗值,增加了近3倍。Taking a 1.5 L extended-range engine as the research object,the computer aided engineering(CAE)simulation model was established and calibrated,and the valve lift curves,intake manifolds and intake port structures were optimized using the DOE technology,and a comprehensive bench experimental calibration was carried out for the remodeled extended-range engines.The experimental and analytical results show that the new valve lift curves improve the low speed torques,especially when the rotation speed is as 1 200 r/min and 2 800 r/min,the torques are increased as 10%and 12%respectively.The intake port structures are optimized,and the average rolling ratio is greatly increased,which is about 1.5~2.2 times more than that of the original ones.The experimental fuel consumption value of the high efficiency zone for the optimized extended-range engines is as 250 g/(kW·h),which is nearly 3 times more than that of the original ones.

关 键 词：实验设计 增程式 性能提升 台架试验 

分 类 号：TK4.5[动力工程及工程热物理—动力机械及工程]