What does China National V and China National VI mean for vehicles?
2 Answers
China National V and China National VI are vehicle emission standards, which regulate the content of harmful gases such as carbon monoxide, PM, and soot emitted from vehicle exhaust. The transition from National V to National VI involves improvements in intake and exhaust efficiency, exhaust gas recirculation efficiency, etc., with the ultimate goal of reducing the levels of harmful gases. The National V standard imposes relatively strict limits on nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles emitted by motor vehicles. From National I to National V, each upgrade in the standard reduces vehicle pollution by 30% to 50%. The China National VI standard requires a 50% reduction in carbon monoxide emissions from gasoline vehicles, a 50% decrease in the emission limits for total hydrocarbons and non-methane hydrocarbons, and a 42% stricter limit on nitrogen oxide emissions.
I recently researched China's vehicle emission standards, and found that China V and China VI are essentially environmental regulations established by China to control exhaust pollution from vehicles. The China V standard was introduced around 2017, requiring new vehicles to reduce harmful substances like carbon monoxide and nitrogen oxides. Many automakers had to upgrade engine technologies to comply at that time. The China VI standard is even stricter, being implemented in phases starting from 2020. It not only lowers pollutant limits but also mandates devices like particulate filters to reduce dust emissions. My friends always ask about the emission standard when buying cars, because China VI vehicles are more environmentally friendly though slightly more expensive, but beneficial for air quality improvement in the long run. These standards are driving the automotive industry's transformation, gradually phasing out older models, and have contributed to reducing smog in our cities. I believe we should pay more attention to emission labels when buying used cars or replacing vehicles, avoiding cheaper but more polluting older models.
