The sixth national standard of diesel oil means that the sulfur content is reduced to below 0.035%, the requirement of acidity index is cancelled, and the fuel index requirements for automobile lubricity and methyl acetate are made. The diameter index of polycyclic aromatic hydrocarbons decreased to 7%, and the cetane number further increased to 49. The following are the expanded data: The role of polycyclic aromatic hydrocarbon paths: The reduction of polycyclic aromatic hydrocarbon paths can effectively reduce the emission of automobile pollutants, so the mass fraction standard of polycyclic aromatic hydrocarbon paths for diesel vehicles has been greatly reduced from 1 1% to 7%, and the detection technology of total pollution content has also been improved, which has improved the flash point index limit of diesel vehicles. In terms of oil products, Liu Guo's gasoline and diesel reduced the aromatic hydrocarbon diameter and benzene content, and improved the total pollution index standard. At present, all indicators have reached the EU engine oil standard, and even some indicators are stricter than the EU standard. After the adjustment of some indicators, the carbon monoxide and carbon monoxide emissions of Guoliu oil products can be reduced by about 59% and 42% respectively, which greatly reduces the negative impact of automobile emissions on the atmospheric environment.

Million car purchase subsidy