关键词: 声学, 加速行驶车外噪声, 限值, 轻型车, 差异分析, ECE R51

Abstract:

UN ECE will reach a decision for the limit values of regulation ECE R51 / 03 series - noise emitted by accelerating motor vehicles in 2013, and the Chinese typical light-duty vehicles will meet serious challenge. And the main reason is that there are obvious differences of the light-duty vehicle type between China and Europe, and the Europe Union has not fully considered the Chinese typical light-duty vehicles when collecting data for the limit values. This paper amplifies the specific discrepancy on the noise emission level between Chinese typical light-duty vehicles and passenger cars, according to the verification test results, puts forward the sub-categories method which is more fit for the condition of China, and also suggests that the domestic manufacturers should take part in the amending of ECE regulations like Japanese companies and avoid the technical barriers.