进气管长度对单缸汽油机性能影响的研究  

A Study on the Impact of the Length of Intake Pipe on the Performance of a Single Cylinder Gasoline Engine

作　　者：刘阳 

机构地区：[1]嘉陵技术中心特种车开发部,重庆沙坪坝400032

出　　处：《陕西工业职业技术学院学报》2016年第3期19-23,共5页Journal of Shaanxi Polytechnic Institute

摘　　要：本文利用BOOST模拟计算软件，在发动机最大功率转速点气门开启阶段，分析进气管长度的变化对进气门口的压力波动的影响，以及进气门口相对于缸内压力波动对充量系数的影响，分析不同长度的进气管对本循环返回压力波及上循环残余压力波的利用，找到该转速下充量系数最佳的进气管长度。上循环残余压力波在进气门开启1／3时刻左右到达气门口，本循环返回压力波在进气门关闭阶段1／3开度时刻左右到达气门口，发动机能获得该转速下的最优性能。在发动机上试验验证，功率相对于原机提高了4．3％。This study,by using BOOST simulating calculation software ,analyzes the impact of the length change ot intake pipe on the inlet pressure wave when the valve opens at the maximum power of speed and the impact of cylin- der pressure wave on volumetric efficiency. The optimum length of intake pipe is found by analyzing the different length when using return pressure wave and residual pressure wave. The results show that cyclic residual pressure wave arrives when the valve port opens about 1/3 while return pressure wave arrives when the valve port closes a- bout 1/3. At the moment,the optimal performance of the engine can be obtained at the rotational speed. The test on the engine shows that the power is improved by 4.3% compared with the original machine.

关 键 词：汽油机 进气管长度 进气谐振 压缩波 充量系数 

分 类 号：U483[交通运输工程—载运工具运用工程]