When will the China IV standard for diesel engines be implemented?
3 Answers
China IV emission standard for diesel engines was originally scheduled to be implemented on January 1, 2010. The China IV emission standard is introduced as follows: Pollutant emission standards: The China IV emission standard is the fourth-stage national standard for motor vehicle pollutant emissions. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), and PM (particulate matter). The China IV emission standard for diesel engines was originally scheduled to be implemented on January 1, 2010. For diesel vehicles over 3.5 tons, the China IV standard was postponed for two years, while for diesel vehicles under 3.5 tons, it was postponed for three years, with the China IV standard being implemented on July 1, 2013. Recirculation system: 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 pollutant emissions to below specified levels.
I remember the National IV emission standards for diesel engines were fully implemented nationwide around January 1, 2015, though some cities had already piloted them as early as 2013. Having driven diesel vehicles for many years, when I replaced my car in 2015, all new vehicles already met this standard requirement, significantly reducing exhaust pollution. Back when I drove older National III-compliant vehicles, the exhaust often emitted black smoke, frequently criticized for heavy pollution. After the new standards took effect, the air on the streets became much fresher. Although new cars were more expensive and sometimes more troublesome to maintain, the long-term benefits for health and environmental protection were worth it. As a seasoned driver, I believe this policy is worth promoting—it makes driving more reassuring and urban living cleaner for everyone.
As an automotive technology enthusiast, I clearly remember the implementation timeline for China's National IV diesel emission standards: nationwide mandatory enforcement began on January 1, 2015, with pilot programs starting in some regions as early as 2013. These standards raised requirements for nitrogen oxides and particulate matter, driving significant technological advancements like the adoption of DPF filtration systems. Through my research, I've found they reduced diesel vehicle emissions by over 40%, substantially improving air quality. Being an inquisitive person, I've also observed how National V and VI standards subsequently followed, creating continuous emission control upgrades. Technologically, these standards stimulated engine manufacturers to innovate, making modern vehicles more efficient and less polluting - benefits that extend far beyond mere policy compliance.
