What is the National V Regular Diesel Standard?
2 Answers
National V diesel standard is equivalent to the European Union's Euro V standard. Below are relevant introductions about the National V standard: Diesel quality standards: Anti-knock quality, volatility, fluidity, corrosivity, stability. Differences between National V and National IV standards: From National IV to National V stage, the required cetane numbers are increased from 49, 46, 45 to 51, 49, 47 respectively, and the cetane index at low temperatures is raised from 43 to 46; diesel sulfur content is reduced from 50ppm to 10ppm. Meanwhile, the National V standard achieves at least 10% and 7% reductions in nitrogen oxide emissions compared to the National IV standard. Emissions of hydrocarbons, carbon monoxide, nitrogen oxides, and particulate matter are all effectively controlled, directly reducing PM2.5 emissions in exhaust gases.
The China V standard for regular diesel is the fifth-stage quality standard for automotive diesel in China, primarily targeting emission control and fuel purity. It limits sulfur content to no more than 10ppm, a significant reduction from the China IV standard's 50ppm, which means better engine protection with reduced carbon deposits and wear. Additionally, China V specifies other parameters such as cetane number and polycyclic aromatic hydrocarbon content to ensure more complete combustion and improved fuel efficiency. Vehicles using China V diesel emit fewer particulates and nitrogen oxides from the exhaust, noticeably improving air quality, especially on smoggy days or in urban traffic. This standard was widely implemented in 2017 as a key step in the country's push for green mobility. A reminder: always check the fuel station labels when refueling, as China V diesel is better suited for modern eco-friendly engines and can save money and reduce maintenance hassles in the long run.
