Heavy-duty diesel vehicles will implement the national six emission standards from July 1st.

　　From July 1st, China implemented heavy-duty diesel vehicles.National sixth stage emission standardThis puts forward stricter standards for the environmental protection emissions of diesel vehicles.

　　The national six emission standards for heavy-duty diesel vehicles will be implemented soon, and they will be used.Vehicle ureaIt is indispensable, through which nitrogen oxides emitted by diesel engines can be converted into pollution-free nitrogen and water vapor, thus effectively reducing tail gas pollution.

　　Qin Jian, General Manager of Jiangsu Kelansu Environmental Protection Technology Co., Ltd.:From the conversion efficiency of more than 70% in the past, to more than 80% in the fifth (emission standard) and more than 97% in the sixth (emission standard), higher requirements are also put forward for the quality of urea.

　　The person in charge of China Automobile Industry Association pointed out that at present, domestic engine enterprises and heavy truck enterprises have done a lot of preparatory work.There are 735 automobile manufacturers with more than 20,000 models, which have been developed and verified according to the national emission standard of heavy vehicles.At the same time, the national six emission standards have also promoted the comprehensive upgrading of products by parts enterprises of aftertreatment systems and urea enterprises for vehicles. Although diesel vehicles only account for about 8% of the total number of motor vehicles in China, 57.3% of nitrogen oxides and 77.8% of particulate matter are from diesel vehicles.

　　Shi Jianhua, Deputy Secretary General of China Automobile Industry Association:After the implementation of the national six (emission) standard (for heavy diesel vehicles),The emission limits of nitrogen oxides and particulate matter will be reduced by 77% and 67% respectively.It is of great significance to promote the high-quality development of China’s automobile industry, and help the national peak carbon dioxide emissions and achieve the goal of carbon neutrality.