This paper contrasts the differences in emission limits, testing circulations etc of regulations before and after upgrade, and expects to offer some clews to control diesel vehicle emissions.

• 我国的排放法规升级对于汽车行业和石化行业都是巨大的挑战，本文对比了升级前后的法规在排放限值、试验循环等方面的差异，以期对控制柴油车辆的排放提供一些思路。