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中文摘要：
发动机进气系统噪声是车辆最主要的噪声源之一,为了满足车辆舒适性越来越高的要求,控制和匹配进气系统的声学性能至关重要。依据三维几何模型建立进气系统的声学模型,其中四分之一波长管的声学模型为参数化模型。基于管道声学理论,研究发动机进气系统噪声仿真方法——无源法,并应用＂无源法＂,进行进气系统管口噪声的模拟仿真。以试验设计分析为基础,研究基于管口噪声的四分之一波长管灵敏度分析方法,并应用该方法,进行四分之一波长管的各个参数灵敏度分析。在不具备发动机仿真模型的情况下,仍然能进行进气系统管口噪声的模拟仿真,并通过灵敏度分析确定四分之一波长管的设计参数。基于管口噪声的四分之一波长管灵敏度分析方法具有很高的工程应用价值,并为进气系统四分之一波长管的参数化设计提供了理论依据。
英文摘要：
The noise of engine intake system is one of the most important noise sources of an automobile.In a bid to meet the higher and higher requirement of ride comfort,the control and matching of acoustic property of intake system is of vital importance.An acoustic model of intake system is built according as the three-dimensional model,hereinto the acoustic model of quarter wave tuner is parameterized.Based on the theory of pipe acoustics,the method of noise simulation of engine intake system—no-source-method is studied,by which the simulation of orifice noise of intake system is carried through.Based on design of experiments analysis,the method of sensitivity analysis of quarter wave tuner based on orifice noise is studied,by which the sensitivity analysis of quarter wave tuner parameters is carried through.Even without the engine simulation model,the acoustic simulation of orifice noise of intake system still can be carried out,and through sensitivity analysis the design parameters of quarter wave tuner is determined.The method of sensitivity analysis of quarter wave tuner based on orifice noise is highly valuable in engineering application,and provides theoretical basis for parameter design of quarter wave tuner.
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