An experimental study on the engine noise source identification by the method of surface vibration measurement technique is carried out in this paper.
通过测量柴油机表面振动速度的方法对其进行了表面噪声源识别的研究。
Identification of engine noise source is a critical technique of controlling engine noise. Traditionally, each of noise sources is separated to test. These tests are complicate by many instruments.
发动机噪声源的识别是控制发动机噪声的一项关键技术，传统的办法是用仪器分别测试噪声源，测试办法复杂，仪器多。
Simulations about reducing noise excited by engine revolution are done by laying secondary source at proper places on the simplified finite element model of a passenger car.
根据所得结论，在简化的客车有限元模型上的适当位置安放次级声源，对因发动机振动激励引起的噪声进行车内有源消声的仿真分析。
Noise source identification for the model GZ6921 bus having rear mounted engine has been car ried out by means of the noise source identification model with testing and analysing system recommended.
运用该噪声识别模型及所介绍的测试分析系统，对GZ 6921型后置发动机客车噪声源进行了识别。
The primary source of the low frequency acoustics is the radiating noise produced by the vehicle structural vibration, which is induced by the vibrating of the engine and the suspension system.
低频噪声的来源主要是由发动机振动，悬架系统振动所引起的车身板件振动产生的辐射噪声。
Engine noise is the major noise source of automobile; air power noise is one of composition parts of engine noise.
发动机噪声是汽车的主要噪声源，空气动力噪声是发动机噪声的组成部分之一。
Aiming for interior abnormal noise in one sedan, the main noise source which is engine intake system is identified by road experiment.
针对某轿车车内异常噪声现象，通过道路试验进行了噪声源识别，发现发动机的进气系统是异常噪声的主要来源。
The performance of an exhaust muffler of internal combustion engine is related not only to the construction of itself, but also to the characters of the exhaust noise source.
内燃机排气消声器的实际消声性能既与消声器本身结构有关，又与排气噪声源性质有关。
The motive source of traditional lawn mower is internal combustion engine, it result in noise pollution, exist the energy problem and exhaust problem, and increase the pressure of energy.
传统草坪机一般使用内燃机作为动力源，造成了噪音污染，而且还存在能源和排放问题，增加了能源压力。
Engine exhaust noise is a main source for construction machinery noise, and it has a very significant impact on the level of construction machinery noise.
发动机排气噪声是工程机械整机噪声中最主要的噪声源，对于工程机械整机噪声水平的高低有重要的影响。
Due to the more stringent legislations of vehicle noise, the main noise source of vehicle-the noise of engine, has become more and more serious.
由于我国汽车噪声限值法规的日趋严格，作为汽车主要噪声源的发动机的噪声问题也显得日益突出。
Due to the more stringent legislations of vehicle noise, the main noise source of vehicle-the noise of engine, has become more and more serious.
由于我国汽车噪声限值法规的日趋严格，作为汽车主要噪声源的发动机的噪声问题也显得日益突出。
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