基于GT-Power优化排气系统阶次轰鸣噪声  

Optimization of exhaust system order booming based on GT-power

作　　者：林胜 段龙杨 翁建生[1,2] 吴赵生[1] 

机构地区：[1]江铃汽车股份有限公司产品开发技术中心NVH实验室,江西南昌330000 [2]南京航空航天大学,江苏南京210016

出　　处：《汽车实用技术》2017年第24期110-112,125,共4页Automobile Applied Technology

摘　　要：文章分析了某款车内低速轰鸣噪音的来源,对排气尾管轰鸣的产生机理进行了探讨。利用GT-power建立"进气-发动机-排气"系统仿真分析模型,利用该方法进行某车型的排气消声器基础状态仿真与测试对标。设计合理消声器,改进消声器的传递损失,优化排气系统的阶次轰鸣噪声。实验证明这种设计方法能够充分考虑发动机及消声器的实际工作状态,更有效准确的进行排气系统开发设计。This paper analyzes the source of low speed booming noise in a car, and discusses the mechanism of exhaust pipe booming. In this paper, a simulation model of intake-engine-exhaust system is established by using GT-power, and the method is used to simulate and test the basic state of exhaust muffler for a certain type of vehicle. Reasonable design the muffler to improve the transmission loss of the muffler and optimize the order noise of the tailpipe. Experiments show that this design method can give full consideration to the actual working state of the engine and muffler, and it can effectively and accurately develop the exhaust system design.

关 键 词：GT-POWER 排气系统 改进 阶次轰鸣 

分 类 号：TB534[理学—物理]