结果表明，减小油管的振动或提高管夹的减振功能可控制振动源对车内噪声的影响。

The results show that reduction of fuel pipe vibration or improving damping function of hose clip can control the effect of source of vibration on interior noise.

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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。

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.

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怠速工况试验表明，优化后的挂钩不仅降低了车内驾驶员右耳侧噪声，而且减小了排气系统传到车身地板的振动。

Test result shows that vibration from exhaust system to floor and sound pressure to driver's right ear on idle running are reduced with the optimized hanger systems.

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