In which month of 2013 did China's National IV diesel vehicles start?
2 Answers
Specific timeline: Light-duty diesel vehicles: Nationwide implementation of National IV emission standards began on July 1, 2013. Heavy-duty diesel vehicles: Nationwide implementation of National IV emission standards began on January 1, 2012. Below is relevant information: Automobile emissions pollutants: Main pollutants from vehicle emissions include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), and PM (particulate matter). China's emission standards are primarily based on European Union standards with some adaptive modifications. National IV: The National IV emission standard represents China's fourth-phase motor vehicle pollutant emission requirements. Through technologies like improved catalytic converter active layers, secondary air injection, and cooled exhaust gas recirculation systems, it controls and reduces vehicle emissions below specified thresholds.
As someone who frequently delves into automotive standards, I recall that the China IV emission standards for diesel vehicles were officially implemented nationwide on July 1, 2013. Prior to that, pilot cities like Beijing had adopted them earlier, starting in 2011, but it wasn't until July 2013 that the standards covered all new vehicle registrations. If you were buying a car at that time, especially a new diesel passenger vehicle produced after July 1, it had to comply with China IV requirements; otherwise, it couldn't be registered. The impact was significant: older vehicles meeting China III standards might have been phased out or required modifications, leading many owners to replace their cars. Technically, the standards improved engine design and added after-treatment systems to reduce nitrogen oxides. Looking back, this was crucial for environmental protection, but when purchasing a car, it's still essential to check the nameplate or environmental label. Overall, the policy rollout was smooth, though there was an initial adjustment period.
