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A Study on Estimating Gasoline Engine Radiated Noise Based on Surface Vibration Measurement

机译:基于表面振动测量的汽油发动机辐射噪声估算研究

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摘要

A study on the method of estimating gasoline engine radiated noise by measuring surface vibration is carried out. Firstly, the theoretical basis and test method is studied. Then an experiment is carried out on a four-cylinder gasoline engine. By measuring the engine surface vibration velocity, the sound power level of these engine parts and of the engine body is calculated. The result shows that the estimation of engine radiated noise is accurate. It shows the sound power level of gasoline engine can be predicted by surface vibration.
机译:采用测量表面振动估计汽油发动机辐射噪声的方法研究。首先,研究了理论基础和测试方法。然后在四缸汽油发动机上进行实验。通过测量发动机表面振动速度,计算这些发动机部件和发动机主体的声功率水平。结果表明发动机辐射噪声的估计是准确的。它显示了汽油发动机的声功率水平可以通过表面振动预测。

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