With the continuous deepening of China's four emission standards, the topic of whether or not the National Fourth Engine has reached the standard has also attracted more and more attention. If the performance of the engine is degraded or damaged due to the failure of oil and urea, who is responsible? Recently, more than one truck company person raised such a question.
When this topic was discussed enthusiastically, an industry expert proposed whether the company should jointly issue a statement to declare that the auto company would not be responsible for the damage caused by the quality problems of oil and urea. Of course, this is just some emotional words that people in the industry have said. However, in some places there is indeed a situation where the quality of oil and urea is not up to standard, and who will bear the resulting car damage, it will become a very realistic topic worth exploring.
â– Only help vehicle manufacturers and users can not take responsibility
On this issue, the reporter recently interviewed Yan Wenjun, general manager of CNHTC Jinan Commercial Vehicle Co., Ltd. For the implementation of the National IV emission standard, he firmly believes that it must be "Oil to the vehicle." However, Yan Wenjun said: “The damage to the engine caused by unqualified oil products is theoretical in nature. However, it is difficult to obtain evidence to prove that the oil has caused damage to the engine. ."
To this end, Yan Wenjun cited an example. For example, the quality of drinking water is very important for human health. However, if a person becomes sick due to drinking water some day, he may not be able to determine exactly which day it is because of where the water is. It causes illness. This example is actually saying that for trucks, due to the particularity of their products' operation, especially for long-distance transport vehicles, because of the long transportation distance, the refueling sites are often not fixed, and one problem that is actually present is in various parts of the country. The quality of the oil may not be completely uniform.
Faced with this situation, Yan Wenjun told reporters that after the oil quality problems caused damage to the engine, during the Three Guarantees period, it is undoubtedly the responsibility of the manufacturers. After the three-guarantee period, it is up to the user. “Although I know that this may have been caused by the damage of oil products, I can't give any data to prove that if I do experiments, I might do it for two or three years. And it's more than just testing one car, let alone need it.†A large amount of capital investment, in addition to the government can get this money, other individuals and manufacturers are difficult to bear, this is a social responsibility." Yan Wenjun said.
Zhang Xiaofan, the general manager of Dongfeng Motor Co., Ltd., also said that if the user bought the country’s four cars, he could not add the country’s four oils, or could not add qualified urea, causing the engine parts to malfunction. The user would not go to the gas station and would not go. There is a problem with accusing urea, and it will eventually find a company that sells the entire vehicle.
In other words, if the country’s four vehicles suffer from engine oil damage due to the quality of the oil products or the non-compliance of urea, then, to a certain extent, the car enterprises become “scapegoats†and the owners will Pay the price.
â– oil and urea people do not trust
As for the quality of oil products, some users have already realized that there are differences among different regions. A person in charge of the Jinbo Logistics Company told the reporter that the same amount of oil was filled in different regions. The price of oil was different, but the final number of kilometers traveled was the same. This shows that it is very likely that the high-priced diesel is not better than the relatively low-priced oil.
In addition, the person in charge of the logistics company also said that because the operating vehicle is an imported vehicle, the urea is fully used in the original plant, "difficult to use low-quality urea on the market, once the vehicle is damaged, the repair cost is too high. The person in charge said bluntly.
Wang Yuhai, Vice Minister of R&D of FAW Jiefang Qingdao Automobile Co., Ltd. said that after the implementation of the National IV emission standard, they conducted nationwide surveys of oil products and urea, mainly in Jiangsu, Zhejiang, Shanghai, Beijing, Guangdong and Sichuan. . The results showed that the quality of oil products was not very optimistic, including cities that had announced the implementation of the country's four emission standards. As a result of the investigation of urea, although there is no problem in the supply of urea, the quality is not stable.
As for the quality of oil products throughout the country, the China Association of Automobile Manufacturers conducted surveys at 672 gas stations in 18 provinces and two municipalities directly under the Central Government. The results show that as of April this year, about half of the gas stations provided ordinary diesel fuel instead of Diesel fuel for vehicles, and the supply of "National IV" vehicle diesel is only 9.7%. No gas station in the 672 gas stations provided special refueling urea equipment, only 2% of gas stations supply small packages and drum products, and 145 large-scale auto parts market truck service stations in 73 prefecture-level cities in 18 provinces In addition, the supply rate of bottled urea was only 58%.
Although the state required that the National IV diesel supply be available before the end of 2014, the truck business people still asked the question: Who can guarantee that the national oil added to the car is a qualified product? The reason why this question is raised is because of the In remote areas, the quality of oil products has some quality problems for a long time. For the trucks that run in remote areas, the quality of the added diesel is not guaranteed.
â– Oil and urea non-compliance can lead to vehicle damage
So, what kind of impact will the non-compliance oil and urea have on vehicles?
It is understood that for trucks using SCR technology, one of the most prominent features is the addition of urea tanks to vehicles. By adding vehicle urea, it is chemically reacted with nitrogen oxides in vehicle exhaust, resulting in reduced pollutant emissions. However, if the urea refueled by the National IV Vehicle fails, it will not only affect the discharge of the National IV Vehicle, but also will block the filter, urea solution delivery pipe, nozzle, etc. due to excessive impurities in the non-compliance urea, and reduce the atomization of the SCR system. The effect can even damage the urea pump. These key components are often expensive.
The current state-of-the-art technology adopted by light trucks is mostly EGR, and SCR technology is adopted by heavy truck companies. For the EGR technology line, if the oil is not up to standard damage to the engine is very serious. According to reports, EGR is relatively sensitive to sulfur in fuel oil. SOx and water vapor formed after combustion will form acidic corrosion products, which will cause increased corrosion and wear inside the engine, and have a greater impact on the engine. In the SCR system, if the oil is not up to standard (sulfur content of non-compliance oil is high), the sulfur in the exhaust gas will cause the activity of the catalyst to decline, thus failing to meet the National IV emission target.
For the country’s four emission upgrades, it should be still a transitional stage. Only the supply of oil products will be in place, and the urea filling station system will be perfect. The real four national era will come. Otherwise, even if the auto manufacturers are ready for the National IV product, they will eventually have to be “big heads,†and it will ultimately harm the interests of users.
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