CAJ | 학술논문

针对自动挡轿车怠速工况车内后排噪声高于前排问题进行了研究。通过车内噪声的主观评价、摸底测试和排气噪声源的分离测试，发现发动机结构噪声通过后悬置传递到车内，导致怠速工况下车内后排噪声高于前排。通过优化后悬置，后排怠速噪声单独降低2dB，后排怠速轰鸣声得到了良好的控制。
침대자동당교차태속공황차내후배조성고우전배문제진행료연구。통과차내조성적주관평개、모저측시화배기조성원적분리측시，발현발동궤결구조성통과후현치전체도차내，도치태속공황하차내후배조성고우전배。통과우화후현치，후배태속조성단독강저2dB，후배태속굉명성득도료량호적공제。
In a automatic car idling conditions, the car rear noise is higher than the front. By the subjective evaluation of interior noise, diagnostic testing and the exhaust noise source separation testing, the engine structure-borne noise passed to the car by rear suspension was found, so the car rear noise is higher than the front in idle condition. According to actual situation, by optimizing the rear suspension the rear idle noise was reduced 2dB alone. Rear idle noise get good control.