Does VI represent China 6?
3 Answers
VI is a Roman numeral, corresponding to the Arabic numeral 6, so China VI is China 6. Below is an introduction to China 6: 1. After China updated the China 6 standard, the emission requirements have reached parity with Europe, even surpassing Europe. Considering the domestic and European pace of updating emission standards every five years, plus a minimum buffer period of three years for traffic restriction policies, after the implementation of the China 6 standard, China 4 vehicles can still be driven for at least 8 years, and China 5 vehicles for at least 13 years. 2. The technological innovation of China 6 is mainly reflected in engine modifications. Compared to China 5 models, China 6 vehicles have added ODC (Oxidation Catalytic Converter) and DPF (Diesel Particulate Filter). DOC is used to purify harmful hydrocarbon substances, while DPF is used to capture carbon particles in the exhaust. The captured particles can be cleared through their own chemical reactions (passive regeneration) or by injecting fuel into the exhaust pipe to raise the exhaust temperature and burn off the particles (active regeneration).
As a long-time car enthusiast, I've noticed many people are confused about emission standards. 'VI' is the Roman numeral for 6, so it indeed represents China's National VI emission standard. This is currently China's highest emission standard, fully implemented in 2019 with the purpose of strictly controlling exhaust pollution. I remember when buying cars before, National V vehicles still emitted relatively high levels of particulate matter and carbon monoxide. Now with the National VI upgrade, requirements have been more than halved. Manufacturers have added post-processing systems to engine technology, such as GPF (Gasoline Particulate Filter) traps, and actual tests show much lower emissions when new models start up. This standard is divided into Phase A and Phase B, with Phase B being stricter. Many cities have already implemented traffic restriction policies. When buying a car, check the VI mark on the nameplate - choosing a National VI compliant vehicle is more worry-free, environmentally friendly, and regulation-compliant. In the long run, this can help reduce smog problems and improve urban air quality.
Recalling the evolution of automotive emissions, VI undoubtedly refers to China VI. Progressing step by step from China I, I remember when China I was introduced in the early 1990s, pollution control was barely constrained. By 2000, China III and IV tightened carbon monoxide emissions, and after China V was strengthened in 2017, China VI was fully implemented in 2019, marking the first truly stringent standards. Each upgrade pushed automakers to innovate—for example, phasing out carburetors and popularizing electronic fuel injection. China VI standards are even stricter, with nitrogen oxide reductions exceeding 30%, significantly reducing environmental harm. In the past, older cars often emitted black smoke, but now China VI-compliant vehicles have cleaner exhaust, showing substantial progress in environmental regulations. When choosing a car or transferring a used vehicle, check for the VI symbol on the environmental label to confirm China VI compliance, avoiding future restrictions that could impact safe travel.
