载货类汽车加速噪声新旧标准测量方法分析  

Analysis of New and Old Standard Measurement Methods for Accelerating Noise of Trucks

作　　者：沈林邦 陈德兵[1] 张鑫 叶方标[1] 王子龙 Shen Linbang;Chen Debing;Zhang Xin;Ye Fangbiao;Wang Zilong(Chongqing Vehicle Test&Research Institute Co.Ltd.,Chongqing 401122)

机构地区：[1]重庆车辆检测研究院有限公司,重庆401122

出　　处：《汽车实用技术》2020年第18期144-148,共5页Automobile Applied Technology

基　　金：重庆市自然科学基金面上项目(cstc2020jcyj-msxm2900);重庆车辆检测研究院有限公司科技发展基金项目(20AKC27)。

摘　　要：对比分析GB 1495新旧标准对载货类汽车测量方法的差异,依据两项标准对不同类型载货类汽车进行测试,分析测量结果的差异性。结果表明:对于N1类车辆,依据新标准相比于旧标准要求测量结果偏小,但同时限值要求降低,测量值的减小量小于标准值的降低量,整体呈现加严的趋势;对于N2、N3类车辆,标准限值降低的同时,测量结果增加,呈现更加严峻的趋势。The differences between GB 1495 new and old standards of N-class vehicles are compared and analyzed.According to the two standards,the N-class vehicles are tested and the differences of measurement results are analyzed.Results show that:for N1 vehicles,the results test ofnew GB 1495 standard are smaller than those test with GB 1495-2002 standard,but at the same time,the limit value are reduced,and the reduction of the measured value is less than the reduction of the standard value,showing a trend of tightening.For N2、N3vehicles,the standard limit value decreases,while the measurement results increase,showing a more severe trend.

关 键 词：加速噪声 方法对比 试验研究 

分 类 号：T-652.4[一般工业技术]