基于SolidWorks的天然气-柴油双燃料发动机设计与试验  

Design and experiment of natural gas-diesel dual-fuel engine based on Solid Works

作　　者：李丽丽 赵武云 谭文胜[2] 王二化[2] LI Lili;ZHAO Wuyun;TAN Wensheng;Wang Erhua(School of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou 730070,China;Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing,Changzhou College of Information Technology,Changzhou 213164,China)

机构地区：[1]甘肃农业大学机电工程学院,甘肃兰州730070 [2]常州信息职业技术学院常州市大型塑料件智能化制造重点实验室,江苏常州213164

出　　处：《浙江农业学报》2018年第3期461-469,共9页Acta Agriculturae Zhejiangensis

基　　金："十二五"国家科技支撑计划项目(2012BAD14B10;2013BAD08B01);江苏省高校自然科学研究面上项目(16KJD460008);常州市高技术研究重点实验室(CM20153001)

摘　　要：以ZS1115型柴油机为例,在基本不改变原有结构的基础上,增加天然气进气阀、天然气-空气混合器,以及天然气调速器等机构以实现双燃料燃烧控制。使用Solid Works软件建立尺寸驱动的双燃料发动机模型,通过运动学仿真验证机械结构运动的可行性;利用Solid Works Motion、Simulation Xpress、Simulation Flow等模块取代实体试验,通过流体模拟和力学有限元分析对主要机械结构的尺寸和性能参数进行优化模拟,得到最优结果。台架试验结果表明,基于Solid Works设计的双燃料发动机运行稳定,输出扭矩和功率略高于原机,最佳经济区域在1 700 r·min^(-1)左右,较原机更大,且更适合中低速、载荷变化较大的农用工况,NO_x和烟度排放也大幅度降低。In the present study,ZS1115 diesel engine was selected as the test object.Natural gas(NG)intake valve,Venturi NG-air mixer and speed linkage system were mounted with little change in the structure of diesel engine.Three-dimensional(3D)model of dual-fuel engine was established with SolidWorks software according to size parameters,and its practicality was verified with motion simulation.Structural sizes and performance parameters of main parts were optimized with SolidWorks Motion,Simulation Xpress and Simulation Flow modules.Bench test results indicated that the dual-fuel engine based on SolidWorks run stably.Its power performance was greater than diesel engine,while NO x and smoke emissions were lower.The best economical zone was around 1 700 r·min-1 in the universal characteristics curve map and the curve extended along the Y axis,which suggested that NG-diesel dual-fuel engine was more suitable for agricultural working condition of low speed and large load changes.

关 键 词：双燃料发动机 混合器 进气阀 SOLIDWORKS软件 仿真模拟 有限元分析 

分 类 号：S218.5[农业科学—农业机械化工程]