某汽油机正时罩盖辐射噪声的优化研究
모기유궤정시조개복사조성적우화연구
Optimization of Timing Cover of A Gasoline Engine to Reduce Radiated Noise
  • 万方数据
    柴油机设计与制造 시유궤설계여제조
    DESIGN & MANUFACTURE OF DIESEL ENGINE
    2015年 2期 32-35 ,共4页

    宿朋%常明明%白国栋%秦少博%宋兆哲

    숙붕%상명명%백국동%진소박%송조철

    汽油机%正时罩盖%辐射噪声 汽油機%正時罩蓋%輻射譟聲
    기유궤%정시조개%복사조성
    gasoline engine%timing cover%radiated noise
    基于某款发动机正时罩盖辐射噪声问题，通过对发动机整机进行有限元分析，并结合试验测试结果，找到了理论分析与实际测试的契合点；同时通过对物体本身模态频率的理论分析，找到了解决此问题的方法；最终通过发动机及整车的NVH试验，对改善方案进行了验证，辐射噪声分别降低9 dBA和8 dBA。
    기우모관발동궤정시조개복사조성문제，통과대발동궤정궤진행유한원분석，병결합시험측시결과，조도료이론분석여실제측시적계합점；동시통과대물체본신모태빈솔적이론분석，조도료해결차문제적방법；최종통과발동궤급정차적NVH시험，대개선방안진행료험증，복사조성분별강저9 dBA화8 dBA。
    To reduce th e radiated noise from the timing cover of an gasoline engine, a finite element analysis of the whole engine was conducted according to the results of actual NVH test of the vehicle to locate the noise source-engine timing cover. Then mode frequency of the cover was analyzed and the solution to the problem was developed. Validated by NVH test, the solution can reduce the radiated noise of the engine and vehicle by 9 dBA and 8 dBA respectively.
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