内燃机工程2017，Vol.38Issue(1)：40-43,4.DOI:10.13949/j.cnki.nrjgc.2017.01.007
催化转化器对消声器插入损失计算结果的影响分析
Study on the Influence of Catalytic Converter on Calculated Insertion Loss of a Muffler
陈岳昌 1石岩 1朱立锋 1谭淼 1耿鹏飞1
作者信息
- 1. 长城汽车股份有限公司技术中心 河北省汽车工程技术研究中心,保定 071000
- 折叠
摘要
Abstract
The influence of catalytic converter on calculated insertion loss of a muffler was investigated.Results show that with the increase of the quantily of catalytic converter, the calculated insertion loss is very close, which is not related to the acoustic source impedance model.To obtain more accurate results of insertion loss, it is necessary to extract the acoustic source impedance, but the difference is negligible in engineering application.On the basis of this feature, a time domain non-linear simulation method of insertion loss is setup.The method not only simplifies the calculation model of insertion loss, but also considers the influence of temperature and air flow on insertion loss, and has high precision, which can optimize the layout of the exhaust system in the concept stage.关键词
内燃机/排气系统/插入损失/非线性/声源阻抗Key words
IC engine/exhaust system/insertion loss/non-linear/acoustic source impedance分类
能源科技引用本文复制引用
陈岳昌,石岩,朱立锋,谭淼,耿鹏飞..催化转化器对消声器插入损失计算结果的影响分析[J].内燃机工程,2017,38(1):40-43,4.
