进气谐振器对汽油机进气性能影响的计算分析  

Simulating the effects of an intake resonator on volumetric efficiency of a gasoline engine

作　　者：马宗正[1] 程勇[1] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061

出　　处：《山东大学学报（工学版）》2011年第1期162-166,共5页Journal of Shandong University（Engineering Science）

基　　金：教育部留学回国人员科研启动基金资助项目;内燃机燃烧学国家重点实验室开放基金(SKLE200908)

摘　　要：利用进气谐振增加进气量是提高发动机动力性能的有效途径。在实验结果与计算结果对比验证方法可行的基础上,采用数值计算的方法,对并联进气谐振器各参数对单缸发动机充量系数的影响规律进行研究,结果表明:采用谐振器能够使谐振转速附近的充量系数提高2%左右;通过改变谐振腔、谐振管管径及管长等参数就能够改变充量系数最大点的位置,且最大充量系数所对应的转速要比谐振转速高50 r/min;谐振器管的横截面积与进气管有效流通面积相近时可以获得较好的充量系数,谐振器管横截面积过大或者过小都不利于谐振器效果的发挥;谐振器容积过大或者谐振管长度过长都会降低谐振效果。The intake resonator system is one of the useful ways to improve the power performance of the engine.Based on the validation of the simulation model,the effects of the resonator parameters,such as resonant volume,resonator pipe length and diameter,on the volumetric efficiency were studied by the BOOST simulation code.The results showed that with the resonator the volumetric efficiency increased by 2% around the resonance speed.The maximum volumetric efficiency point could be changed by modifying the resonance volume,resonance pipe diameter or length,and the speed corresponding to maximum volumetric efficiency was 50 r/min higher than the resonance speed.The volumetric efficiency of the engine could be improved if the cross sectional area of the resonance pipe was close to the effective charging area.Too large a resonance volume or too long a resonance pipe could reduce the effect of the resonator.

关 键 词：汽油机 进气谐振 充量系数 数值计算 

分 类 号：TK412.3[动力工程及工程热物理—动力机械及工程]