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Since the beginning of this year, haze has been raging. In some reports, both the urban and rural areas, the rapid development of the automobile industry has been considered as the main source of haze. The contribution rate to PM2.5 is as high as 20%-30%.
Among automobile emissions, diesel vehicles are large emitters. As an automobile company, especially a commercial vehicle company, what happens to product emissions? Is the urgency of current energy conservation and emission reductions particularly strong?
Tang Dagang, director of the Motor Vehicle Sewage Monitoring Center of the Ministry of Environmental Protection, at the 5th China Auto Blue Book Forum recently held, expressed his views on the issue of diesel vehicle emission reduction.
It is understood that the Ministry of Environmental Protection Motor Vehicle Sewage Disposal Monitoring Center is an institution mainly based on technical support and has no administrative rights, but has a deeper understanding of the state policies. Tang Dagang said that Premier Li Keqiang had specifically referred to the provision of clean air, clean water, and safe food to the people. Therefore, the pressure for air pollution control this year is very high.
Tang Dagang said that if it is absolutely necessary to say what percentage of PM2.5 is contributed by the car, how much is contributed by diesel vehicles, this is hard to say. However, at present, the industry has basically reached a consensus: All aspects, including automobiles, engines, related parts and components companies, and fuel suppliers, should not shirk their responsibilities and work together to improve air quality.
“Commercial vehicles are mainly diesel vehicles. This is indeed a very large source of pollution,†said Tang Dagang. At present, there are 15 million diesel vehicles in use in the country. Half of them are heavy-duty diesel vehicles, and each year they also produce new heavy-duty diesel. About 1 million cars. Statistics from the past two years show that these vehicles consume approximately 7,500 tons of diesel each year, emitting 500,000-600,000 tons of particulate matter and 4-5 million tons of nitrogen oxides.
It is understood that diesel vehicles have previously been listed as one of the “twelve-five†constraint emission reduction targets, requiring a reduction of 10% by 2015 compared with 2010. Data from various locations in the past year or two show that the situation of diesel vehicle emission reduction is not very optimistic: In 2011, the situation has not decreased, but in 2012, some places began to decrease, but most places are still increasing.
At present, from the point of view of emission regulations and standards, the country is gradually proceeding. However, because the oil content index of oil products has been falling, it still has no implementation conditions. At present, domestic commercial vehicles are still implementing State III emission standards, which are far worse than the cleanest emissions standards that other countries can achieve.
"It can be seen from the above points that diesel commercial vehicles have great potential for emission reduction," Tang Dagang said.
The commercial vehicle IV emission standard was postponed for the second time last year and was postponed for 18 months. “At that time, Announcement 92 clearly required that the sales and registration of the State III vehicles should be stopped on July 1 of this year and the State IV standards should be strictly enforced,†said Tang Dagang. 
