The National IV emission standard will be implemented on January 1 next year.
With the implementation of this policy, domestic heavy-duty truck companies will fully deploy the Fourth National Product, and engine suppliers will also usher in new technological challenges. In this National IV Upgrading War, Cummins, an engine manufacturer with nearly one hundred years of history, can bring anything to China.
In 2019, Cummins, the world's largest independent engine manufacturer, will usher in its 100th anniversary. As one of the earliest batch of foreign companies that entered China to establish a joint venture company and a company that has accumulated technology for more than 10 years in diesel IV emission technology, how will Cummins face China's new emissions upgrade problems?
Cummins Vice President Cummins China Chief Technology Officer Peng Lixin
Which technology route to take?
In response to China's National IV upgrade requirements and the status quo of Chinese truck manufacturers and users, what are the technical routes Cummins is taking? What are their advantages?
Cummins Engine, China's truck users may not be unfamiliar. Cummins is the first American diesel engine company to produce engines locally in China, and is also the most famous international diesel engine brand in China. Many professional users also know that Cummins is the world's largest supplier of independent diesel engines, and has the highest market share of medium- and heavy-duty commercial vehicles in the United States and Europe.
In fact, as an international company that is relying on technological innovation to grow and expand, Cummins is also in the forefront of the industry in terms of engine emission upgrades. In 2005, Cummins launched the Euro IV engine series using Selective Catalytic Reduction (SCR) at the Commercial Vehicles Exhibition in Birmingham, UK. On this platform, only a simple upgrade is required to meet Euro V (equivalent to the State IV). )Emission Standards.
“The way to upgrade emissions in China is to follow the European route. Cummins products have always been targeted at the European and American markets, and therefore will go ahead in emissions technology. But in the face of the Chinese market, we have still developed many adaptations targeted China's emissions-elevated products, according to Peng Lixin, Cummins vice president and chief technology officer of Cummins China, said that Cummins has both the electronic control + SCR and electronic control + EGR/PFC two countries IV upgrade technology route.
However, the reporter noticed at Cummins China's official website that the technical route of electronically controlled high pressure common rail has received more publicity and was brought to China very early. For example, in the 2009 memorabilia of Cummins China, there was one such news: “The first batch of heavy truck trucks equipped with the Cummins ISM11 IV IV engine were delivered and used, becoming the first low emission country IV heavy truck in China to achieve mass production and put on the market. This shows that Cummins has been ready to deal with the emission escalation in China IV.
Peng Lixin said that for the current status of China IV diesel not being able to be put into place in China for a short period of time, Cummins is recommending the use of the electric IV + SCR after-treatment route for the China IV engine. "The IV vehicles of this type of engine can not only burn the country III oil, but also have little effect on the vehicle itself, and can also significantly reduce particulate and nitrogen oxide pollution in the exhaust."
“The SCR post-processing system uses ceramics as the carrier, and the sulfur in the oil will accumulate on the ceramic carrier and evaporate on one side, which is a reversible process.†Peng Lixin explained that the vehicle uses State III oil (sulfur content is 350ppm). After a certain period of time, a certain temperature will cause the volatilization to settle faster than the precipitation. The sulfide will be cleaned and the original emission level can be restored without damaging the SCR system. "But the EGR system is sensitive to sulfur, and its effect is irreversible." .
In addition, Peng Lixin pointed out that using natural gas as a fuel is also a good way to reduce haze. "Diesel's hydrocarbon is relatively large. If it is not treated with environmental protection, it is easy to emit black smoke and produce particles that cause haze. However, the hydrocarbon ratio of natural gas is much lower, and its particulate matter emissions are almost negligible."
Accumulation of Cummins gas engine technology, its large torque and reliability in the United States, but in China by the price factor greater impact. “Currently, Cummins has developed different types of natural gas engines that are suitable for the Chinese market for buses and trucks and will be available in the market in 2014.†Peng Lixin disclosed.
Cummins advantage?
Although the National IV engine with electronic control + SCR after-treatment technology is more advantageous, it is also used by many engine manufacturers in China. So, what is the advantage of Cummins, the world's largest independent diesel engine supplier and the Euro IV engine launched 10 years ago?
"Our products have reached the optimal balance between fuel consumption, emissions and costs." Peng Lixin explained that to measure the level of diesel engine manufacturing is to look at the level of this three elements, and to find the balance between the three best value. “It is relatively easy to arbitrarily prepare two of these elements. If the engine is difficult to do, it will be difficult to achieve an optimal balance between these three.â€
Peng Lixin stated that by 2019, Cummins had established its 100th anniversary and had nearly 100 years of diesel engine production experience in the world. "This also helps us to accumulate a large amount of experimental data and use data, and has unique experience in controlling the balance of fuel consumption, emissions, and cost."
In addition, Peng Lixin emphasized that in addition to the irreproducibility of a hundred years of experience, Cummins has the advantage of developing its own key engine parts. “For example, while we are producing engines, we also develop and produce key components such as fuel systems, superchargers, filters, and post-processing.â€
“At the same time, Cummins also has a unique electronic integration technology. A set of electronic technology systems (CE), through which to integrate key components and achieve the optimization of the balance between fuel consumption, emissions, and cost, which is also we can do a good country IV The key point of the product," said Peng Lixin.
It is worth mentioning that Cummins, as a century-old engine company, not only focuses on the optimization of the engine itself, but also focuses on the optimization of the power system after the engine is put into the vehicle so that the vehicle can achieve the most suitable and best effect. status.
“We have done a lot of work in power matching. One is to collect operating conditions for each engine and set up a database; the other is to collect the conditions of terrain in all regions of China and then divide it into different types as a basis and support.†Peng Lixin said that after these two tasks, we will carry out various optimizations based on Cummins' experience in North America and Europe, and integrate China's national conditions and experience technologies.
China's layout and problems?
According to Cummins China official, Cummins and its subsidiaries in China invested more than US$1 billion in China, and as the largest foreign investor in the Chinese diesel industry, they have 19 joint ventures and wholly-owned manufacturing companies in China to produce engines and turbochargers. Filters, exhaust systems, fuel systems, alternators and generator sets. Cummins's 23 series of engine products already have 14 series produced in China in accordance with Cummins globally unified and strict quality standards.
Peng Lixin said, “In China, Cummins has 5 joint venture engine companies, and the 50% and 50% joint venture models have been used since the earliest days of Dongkang, and have been very successful to this day. In this mode, both parties can do as much as possible. Consultation to maximize the advantages of both parties.†The five engine joint ventures are Dongfeng Cummins, Chongqing Cummins, Xi'an Cummins, Beijing Foton Cummins, and Guangxi Cummins.
Cummins has also deployed seven joint ventures in engine key components in China. “In the case of joint venture superchargers, objectively speaking, Cummins has brought new technologies for superchargers to China, and has also advanced the development of Chinese engines. Currently supercharger products are developing very well, not only for Cummins engines, At the same time, it also gave other engine companies.The filtration system also supplies Cummins and other engine and main engine plants at the same time.The post-processing and fuel systems are relatively late for China, and they are specially designed for the use of advanced fuel systems and post-processing technologies for the country IV. The fuel system will be equipped with the Cummins engine and the post-processing system will be used at the same time for non-Cummins engines.†Peng Lixin introduced this to the Fang De Network reporter.
However, more than 30 years after entering China, Cummins still feels some discomfort. “The biggest difference in China is that its policy changes are faster than planned, and various factors such as industries and regulations will affect R&D production and results. For example, we can't say now when China IV is fully implemented and cannot do too much. The planning of the United States is very detailed, and every phase of 10 years, 5 years, 3 years, and 1 year is very clear.†Peng Lixin said that Cummins has been actively responding to China’s Industry partners, formulate business strategies suitable for the Chinese market, and gradually adapt to the Chinese market.
In addition, the design concepts of commercial vehicles in China and Europe and the United States are also different. “The design mileage of commercial vehicles in the United States is 1.6 million kilometers, and the mileage of Chinese trucks is less than 1 million kilometers. The result is that the lifetime of our engines is longer than the entire vehicle cycle, and product durability has become a waste.†Peng Lixin said In order to better adapt to the Chinese market, Cummins's engineers in China work in the direction of cost optimization by designing a reasonable life cycle, separating reliability from durability, maintaining good reliability, and reducing the waste of durability.
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