How much do you know about the new standard of National IV?

How much do you know about the new standard of National IV?

National III and National IV refer to my country's national standards, that is, automobile emission standards, referring to CO (carbon monoxide), HC+NOx (hydrocarbons and nitrogen oxides), PM (particulate matter, smoke) and other harmful gases.

The "National IV" emission standard applies to all mechanical equipment using fuel engines in the construction machinery industry. Including: rotary drilling rig, hydraulic grab, double-wheel milling and milling machine, tunnel boring machine, full-turn drilling rig, etc. According to the emission limits and measurement methods of diesel engine exhaust pollutants for non-road mobile machinery in the fourth stage issued by the Ministry of Ecology and Environment and the technical requirements for pollutant emission control of non-road diesel mobile machinery, from December 1, 2022, all production, The import and sale of off-road mobile machinery below 560kW (including 560kW) and the diesel engines installed therein shall meet the requirements of China IV.

The Ministry of Ecology and Environment issued a series of regulations to achieve the "double carbon" goal. The implementation of the "National IV" emission standard will greatly improve the pressure of construction machinery and equipment on environmental pollution, further strengthen the environmental protection management of old equipment, and will also accelerate the update iteration and innovation of construction machinery and equipment.