The "fake" incident of the Volkswagen that shocked the world not only made this famous German car factory encounter an unprecedented crisis of trust, but also made the diesel passenger car that was not widely promoted in China unpredictable.

The standard industrialization upgrade of the State IV has not been fully realized

In fact, compared to about 50% of diesel passenger car ownership in Europe, domestic gasoline vehicles are far more popular than diesel vehicles, and the latter is said to have a 1% retention rate.

Cheng Ruifeng, manager of the oil and gas department of Dongfang Oil and Gas Network, told the “First Financial Daily” reporter that in February 2013, the State Council executive meeting decided to speed up the upgrading of oil products, and the petroleum and petrochemical system also formulated a very clear upgrade route. On January 1, 2015, the country's supply of diesel fuel was upgraded. The national five diesel fuels in some cities are also scattered all over the streets, such as Shanghai, Jiangsu, Hangzhou Xiaoshan, Tianjin and Guangdong. Therefore, the corresponding oil products of diesel vehicles can be found in many areas of China. This is completely different from the actual environment in which electric vehicles are located: although there are many electric vehicles, the layout of the rechargeable piles is only in its infancy. Secondly, changes in the regulation of oil upgrading will also drive the development of corresponding technologies and bring opportunities for clean diesel vehicles. For example, exhaust gas aftertreatment and combustion efficiency have improved a lot. For example, in the medium and heavy commercial vehicles, the domestically selected path is the SCR system method, and the light commercial vehicle focuses on the EGR DOC/POC method.

However, Cheng Ruifeng said that although the exhaust gas treatment technology and oil quality seem to have changed significantly, the road to upgrading the automobile industrialization seems to be very long. "Some diesel vehicles that do not meet the national standards are still driving on the road. The reason for this phenomenon is that the domestic supervision of diesel vehicle standards will not be comprehensive, and some cars with the national environmental protection logo are not actually To achieve this standard; in addition, diesel owners will not say to replace the existing models for the new national standards. When buying a new car, the owner will make comprehensive considerations for the whole vehicle, environmental protection technology, etc., I hope to save money in the largest range. Therefore, it is difficult to synchronize the industrialization process with diesel standards and high technology."

He also said that this factor of "gas-fire ratio" also hindered the development of diesel vehicles. The so-called "gas-to-liquid ratio", that is, after the cracking of one ton of crude oil, the ratio of gasoline and diesel will be produced separately. This is based on the properties of the oil-making equipment itself and cannot be achieved through subjective human operation. China's steam-to-fire ratio has been around "1:2" (now down). Moreover, under the economic growth rate for many years, domestic diesel demand is very strong, and factories, mines, water transportation and other industries have to use diesel in large quantities, and there is not much room for diesel vehicles.

If the use of diesel vehicles is to be increased, then the production of diesel oil will have to keep up. As a result, more crude oil will be imported in China, resulting in a passive increase in the amount of gasoline. Suppose that in order to further improve the diesel car, where is the more gasoline produced? Where is the car sales decline this year, the car factory can not even sell the gasoline car, and will not do the diesel car sales that are not thankful It is.

Diesel vehicle exhaust gas emissions are greater

Compared with the huge amount of diesel vehicles in the European market, there are other reasons for domestic diesel sales.

First, the existing environmental regulations in Europe are more lenient for diesel vehicles. For example, in the case of the Euro 5 standard, the allowable values ​​for gasoline and diesel vehicles on nitrogen oxide emissions are 60 mg/km and 180 mg/km. Even in 2014, Europe implemented a more stringent Euro 6 standard, and the nitrogen oxidation of diesel vehicles. The emission range is also 80mg/km, but in the United States it is all 43mg/km. In addition, many countries in Europe will reward the purchase of energy-efficient vehicle consumers, such as fuel consumption, vehicle weight, displacement and other vehicle purchase tax; some diesel cars after driving a certain number of kilometers, the relevant departments will Make up for the initial purchase price difference between diesel and gasoline vehicles.

However, the Chinese market is different. A petrochemical researcher at a fund company explained to the reporter of China Business News that the natural properties of diesel vehicles and the congested traffic within the city made the diesel vehicles bumpy.

In the automobile exhaust, the emissions of NOx and PM have reached more than 30% of the total emissions of the whole society, and the emission ratio of diesel vehicles in this respect is also abnormally high, about 80%, so the exhaust emission control of diesel vehicles is crucial. important.

Relevant data show that emissions of CO, HC, NOx and PM in China's automobile exhaust gas have continued to grow in recent years. In the face of such severe environmental pollution, coupled with traffic congestion, both government departments and automobile manufacturers, the determination to promote diesel vehicles is difficult. In contrast, the policy environment for hybrid and electric vehicles is more relaxed.

Moreover, although diesel vehicles have the advantages of strong power and good fuel economy, if the SCR system is to be selected to make the tail gas treatment of medium and heavy commercial vehicles cleaner, it is necessary to strengthen the exhaust gas treatment system. The cost of the owner's car will increase, causing the owner to close the exhaust gas treatment device after purchasing the car.

After the fraud of the Volkswagen diesel car broke out, people's environmental trust in diesel vehicles may change qualitatively. Wang Liusheng, chief analyst of China Merchants Securities, told the “First Financial Daily” reporter that in the future, sales of clean diesel vehicles in China will increase or resist.

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