发动机进气系统加速气流噪声问题分析与研究  

Analysis and Research on Intake System Accelerated Airflow Problem of a Vehicle Engine

作　　者：王金友[1,2] 闫晨[1,2] 刘月普 宋兆哲[1,2] 高锋军[1,2] 陈万军[1,2] 

机构地区：[1]长城汽车股份有限公司技术中心,河北保定071000 [2]河北省汽车工程技术研究中心

出　　处：《小型内燃机与车辆技术》2016年第6期81-83,96,共4页Small Internal Combustion Engine and Vehicle Technique

摘　　要：针对某SUV发动机在加速工况下存在噪声问题,进行了声源特性分析,设计了共振式消声器,利用LMS Virtual Lab软件进行传递损失仿真计算和传递损失试验测试,验证了仿真结果准确性。在此基础上进行整车测试,结果使驾驶员右耳噪声降低了2.8 d B(A),加速气流噪声主观评价达到可接受。In order to solve the 1 400-2 400 Hz airflow sound problems under the accelerating working condition of the engine in certain SUV, a resonant muffler was designed, and the transmission loss was calculated. In addition, experimental tests were done to verify the simulation results. On the basis of it, the prototype was made and the test was done on the vehicle. The test results show that the driver′ s right ear noise is reduced by 2.8 d B（A）, and the effect of the accelerated airflow sound is accepted by Subjective evaluation.

关 键 词：气流噪声 消声器 传递损失 主观评价 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程]