Why didn't the smog weather be obviously alleviated after using Liu Jing oil?

Oil quality is directly related to automobile exhaust emissions. The content of sulfur, manganese, copper and other elements, olefins, aromatics, alcohols and other substances has an important impact on emission performance. There are more than 100 chemical components in motor vehicle exhaust, which contribute to the formation of PM2.5 and photochemical smog. Among them, hydrocarbons, such as alkanes, cycloalkanes, olefins and aromatics, are mostly volatile organic pollutants (VOCs).

The sulfur content of gasoline in Beijing No.6 is consistent with that in Beijing No.5 and remains at a low level. It is important to limit the mercaptan index, greatly reduce the content of aromatic hydrocarbons and olefins, and reduce the content of benzene. For Liu Jing diesel oil, the content of polycyclic aromatic hydrocarbons decreased. All these measures are aimed at reducing the emission of volatile organic pollutants.

According to the statistics of the municipal environmental protection department, it is estimated that after using Liu Jing oil, the particulate emissions of gasoline vehicles in use can be reduced by 10%, and the overall emission reduction rate of non-methane organic gases and nitrogen oxides can reach 8% to12%; Diesel vehicles in use can reduce nitrogen oxides by 4.6% and particulate matter by 9. 1%.