When did the China IV emission standard come into effect?
2 Answers
China IV emission standard was implemented starting from 2008. In 2008, cities like Beijing, Shenzhen, and Shanghai took the lead in implementing the China IV standard. Here are the specific details about the China IV standard: 1. The China IV emission standard is the national fourth-stage motor vehicle pollutant emission standard. 2. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), PM (particulate matter), etc. 3. Through the application of technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, the standard aims to control and reduce vehicle emissions below specified limits.
I still remember my experience driving a taxi over a decade ago. The China IV emission standards were introduced around 2011. Back then, I got a new car, and the dealership told me that all vehicles manufactured after July 1, 2011, had to comply with the China IV standards; otherwise, they couldn't be registered. Before that, it was the China III standard, which wasn't as strict on emissions. But once China IV was implemented, the harmful substances in exhaust emissions were significantly reduced, and urban air quality noticeably improved. From that year onward, annual vehicle inspections became stricter, requiring checks for the environmental protection label. As an experienced driver, I think this policy was timely, driving the green upgrade of the automotive industry. When buying a car, people would always ask about the manufacturing year, especially for used cars made before 2011, as they might exceed emission limits. All in all, that year was a milestone, and it left a deep impression on me.
