CAJ | 학술논문

对基于表面振动测算汽油机辐射噪声的方法进行了研究，首先对该方法的理论基础和数学关系进行探究，并以此理论为基础设计试验及数据处理方法。然后对一台四缸汽油机进行了实验验证，测量得到了表面振动速度，估计计算出发动机整机声功率和各部件的噪声贡献。实验表明测算噪声结果准确度较高，证明该方法能可靠有效地测得汽油机的辐射噪声。
대기우표면진동측산기유궤복사조성적방법진행료연구，수선대해방법적이론기출화수학관계진행탐구，병이차이론위기출설계시험급수거처리방법。연후대일태사항기유궤진행료실험험증，측량득도료표면진동속도，고계계산출발동궤정궤성공솔화각부건적조성공헌。실험표명측산조성결과준학도교고，증명해방법능가고유효지측득기유궤적복사조성。
A study on the method of calculating gasoline engine radiated noise by measuring surface vibration is carried out in this paper. Firstly,the theoretical basis and mathematical relationship of the method is studied,and test and data processing method is designed based on these. Then an experiment is carried out in a four-cylinder gasoline engine. By measuring the engine surface vibrating velocity,the sound power level for these engine components and for total engine is calculated. The calculation results of engine radiated noise are accurate. It shows that the sound power level of gasoline engine can be predicted by surface vibration.