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When will the China IV standard for diesel engines be implemented?

1 Answers

VonGriffin

07/29/25 2:50pm

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.

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