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基于GT-SUITE的发动机排气压力波仿真分析
作 者：
范晓梅;许勇;杨群立;陈溢文
单 位：
桂林激光通信研究所;桂林电子科技大学计算机与控制学院
关键词：
排气压力波;排气系统;排气系统模型;仿真
摘 要：
为研究排气系统内压力波的形成及其传播过程与发动机工作状况之间的关系,本文利用GT-POWER软件建立一个4缸4行程的汽油发动机模型。结果显示在发动机的一个工作周期内,压力波出现了4个波峰和波谷,分别对应4个气缸的排气行程;修改发动机的转速,会影响排气压力波的幅值、谐波成分、相位等参数;在排气行程末期,排气压力波在排气管内发生干涉、叠加和负压效应。
译 名：
Simulation Analysis of Engine Exhaust Pressure Wave Based on GT-SUITE
作 者：
FAN Xiao-mei1,XU Yong1,YANG Qun-li1,CHEN Yi-wen2(1.Computer and Control Department,Guilin University of Electronic Technology,Guilin 541004,China;2.Guilin Laser Institute of Communications,Guilin 541004,China)
关键词：
Exhaust pressure wave;Exhaust system;Exhaust system model;Simulation
摘 要：
To study the relationship between the formation and dissemination of pressure wave and engine's working conditions,this paper creates a four-cylinder four-stroke gasoline engine model with GT-POWER software.The results show that four wave crests and troughs have appeared,respectively,corresponding to the four-cylinder exhaust travel.When the engine speed is modified,exhaust pressure can affects the pressure wave's amplitude,harmonic components,phase,and other parameters.At the end of exhaust trip,interference,superposition,negative pressure effect of exhaust pressure wave will occur in the exhaust pipe.
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