What is National Standard Diesel?
2 Answers
National standard diesel refers to diesel that complies with the national standards. Below are the relevant introductions: 1. Standard specification: Approved by the General Administration of Quality Supervision, Inspection and Quarantine and the National Standards Committee, to accelerate technological transformation in oil production enterprises, improve the quality of automotive diesel, strengthen oil supervision, enhance and promote environmental protection, reduce sulfur content in automotive diesel, and lower emissions, advanced engine technology and exhaust after-treatment devices are required, leading to the standard specification for diesel. 2. Diesel: Diesel is a light petroleum product, a mixture of complex hydrocarbons (carbon atoms number about 10 to 22). It serves as fuel for diesel engines. It is mainly blended from diesel fractions produced through processes such as crude oil distillation, catalytic cracking, thermal cracking, hydrocracking, and petroleum coking.
The National Standard Diesel, as I understand it, is a set of diesel fuel regulations established by the Chinese government, aimed at making diesel vehicle emissions cleaner and upgrading environmental protection. Currently, the National VI standard is being implemented, requiring ultra-low sulfur content—almost no sulfur—and a higher cetane number, significantly reducing pollutants produced during diesel combustion. I remember when I refueled with National VI diesel, the engine ran smoother, and the exhaust color became lighter, unlike the black smoke that used to pollute the air. The standard also specifies parameters like density and distillation range to ensure vehicles can start normally in different seasons and reduce engine wear. When refueling, it's important to check the label to confirm it's National VI diesel. A tip is to go to reputable gas stations to avoid buying substandard fuel that could damage the car. Long-term use of this diesel can improve air quality in big cities, and the government is promoting this to combat smog.
