进气歧管长度对发动机性能的影响  

Effect of Intake Manifold Length on Engine Performance

作　　者：宋占锋 刘春东 张佳乐[3] 张兰娣 耿明超 SONG Zhanfeng;LIU Chundong;ZHANG Jiale;ZHANG Landi;GENG Mingchao(College of Mechanical Engineering,Hebei University of Architecture,Zhangjiakou Hebei 075000,China;Hebei Basic Mechanical Experiment Teaching Demonstration Center,Zhangjiakou Hebei 075000,China;Zhangjiakou Vocational and Technical College,Zhangjiakou Hebei 075000,China)

机构地区：[1]河北建筑工程学院机械工程学院,河北张家口075000 [2]河北省机械基础实验教学示范中心,河北张家口075000 [3]张家口职业技术学院,河北张家口075000

出　　处：《汽车零部件》2022年第7期1-4,共4页Automobile Parts

基　　金：河北建筑工程学院博士科研启动基金(B-202002);河北建筑工程学院一流课程建设项目(4070108)。

摘　　要：发动机进气歧管的长度直接影响其性能的输出。利用GT-Power仿真软件模拟计算了进气歧管长度变化对发动机的输出扭矩、输出功率和燃油消耗率的影响。仿真结果表明:在选定的进气歧管长度范围内,随着管长的增加,发动机在低转速工况下的扭矩峰值增大,最大输出功率减小,扭矩峰值和功率峰值向低转速区靠近;在低转速工况下发动机燃油消耗率减小,在中高转速工况下燃油消耗率增大,燃油消耗率极值向低转速区移动。仿真结论可为发动机进气歧管长度优化设计提供参考。The length of intake manifold directly affects engine performance.The effects of intake manifold length variation on engine output torque, output power and fuel consumption rate were simulated and calculated by GT-Power software.The simulation results show that within the selected intake manifold length range, with the increase of intake manifold length, the peak torque of the engine increases at low-speed region, the maximum output power decreases, and the torque peak and power peak shift to the low-speed region.The fuel consumption rate of the engine decreases under low-speed operating conditions, and increases under middle and high speed operating conditions, and the extreme value of the fuel consumption rate shift to the low-speed region.The simulation results provide a reference for the optimization of engine intake manifold length.

关 键 词：发动机 进气歧管 输出扭矩 输出功率 燃油消耗率 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程]