The arrival of diesel commercial vehicles in the implementation of the country's three major restrictions not only motivated the sale of the country's second car, but also the country's three-car market has gradually improved.
Since 2007, Yuchai, Weichai, FAW Xichai, China National Heavy Duty Truck, Dongfeng Cummins, and Shangchai have carried out the switchover between the two countries and the three engines, including holding customer meetings and fitting tests with some models. It can be said that the key diesel engine companies have already done their homework for the implementation of the third country.
The common-rail-based single-unit pump was supplemented by several new batches of diesel engine products released by the State Environmental Protection Administration from the beginning of this year. The reporter saw that most of the products that follow the high-pressure common-rail technology route include Weichai, Shangchai and FAW Xichai. The main products of Shanghai Hino are all electronically controlled high pressure common rails as fuel injection systems; other companies include Yuchai, Dongfeng Cummins, China National Heavy Duty Truck, Kunming Yunnei, Yangdong, Yangchai, Quanchai, Beiqi Foton, Jiangling, Qingming, the Great Wall and other light diesel engine manufacturers also have common rail models to climb the catalogue. The common rail system subdivided by various manufacturers will find that several suppliers such as Bosch, Denso, Delphi, Cummins, VDO, etc. occupy this area, especially Bosch products, which are universal. For example, Weichai and FAW Xichai are all based on the Bosch Common Rail System; China Heavy Duty Truck, Shangchai, and Shanghai Hino are mainly based on the electric railroad common rail system; Dongfeng Cummins is the Cummins common rail system (which also includes A considerable part of Bosch's common rail system).
For monomer pumps, Yuchai, Dongfeng Commercial Vehicles, Yangdong, Quanchai, etc. have many product applications, and pump nozzles are also found on the models of Xi'an Cummins and other companies.
In the case of companies equipped with two types of fuel injection systems that are relatively balanced, according to the statistics of the reporters, of the 72 models that Yuchai entered into the catalog, 35 models equipped with common rail systems are equipped with models that are equipped with single pump systems. It is 37 models. As far as the 10 models of Yangju are concerned, there are 3 models equipped with a common rail system, and the remaining 7 models are equipped with a single pump system; while in the list of 12 models of FAW Xichai, there are There are 10 models that match the common rail system, but there are still two models that are equipped with a single pump system.
Very gratifying is that in the single pump system, we have seen many times the shadow of ASIMCO Nanyue and Chengdu Witt. They have surpassed Delphi as the top two suppliers of matching models. Similarly, in the matching of another key component, the injector, although Bosch still dominates, ASIMCO Tianwei has surpassed another major supplier, Denso, in the number of matching models. What is more noteworthy is that a domestic new army has emerged in the common rail system, Liaoning Xinfeng Enterprise Group Jier Fuel Injection Co., Ltd., and its products have been used by companies such as Yangjin.
The independent product gradually improved
In the survey, the reporter found that when most companies still follow the traditional technical route of common-rail and single-unit pumps, China National Heavy Duty Truck Co., Ltd. has electronically controlled the already-owned electric-controlled common-rail technology. Eé„„GR (Exhaust Gas Recirculation) is another way to give a surprise to a single manufacturer on the technical route.
It is understood that at the end of 2005, China National Heavy Duty Truck Technology Center organized China National Heavy Duty Trucks Chongqing Fuel Injection System Co., Ltd., which took the lead in completing the program of using electronically-controlled inline pumps + cooling EGR with independent intellectual property rights in China for one and a half years, and passed It was certified by the Beijing Municipal Environmental Protection Bureau and announced in 2007 in the Catalog of Internal Combustion Engines that the State Environmental Protection Administration meets the national emission requirements. At present, on the basis of the production of more than 1,000 EGR three engines, China National Heavy Duty Truck seems to be able to take the lead in the country's three models with this low-cost model.
From another domestic company, product development of Chengdu Wit EFI, the reporter also noticed that this company, which has a diesel engine electronically controlled combination pump as a technical specialty, has also delivered nearly 5,000 to users since the second half of 2007. The products have been applied to the products of Yusan, Dongfeng Cummins, FAW Dachai, FAW Xichai, Dongfeng Chaochai, Beiqi Futian, etc., and have now entered mass production.
Regarding the domestic independent technological route, the common technology track of common rail, single pump and other foreign competitions, when the reporter asked Mr. Zhao Shilin, an expert from the China Internal Combustion Engine Industry Association, he said that as long as it meets the country's three emission standards, the product structure and production process The technical solutions with the smallest changes, the lowest costs, and simple maintenance should all be put into batch production as soon as possible, and should not always stay in the testing phase.
For some people who always feel that domestic technology solutions lack stability and durability and have not received approval for production consistency, Zhao Shilin believes that technology is constantly improving, even though common rail technology has appeared in the development process. With such problems, new technologies should be improved through continuous experimentation.
Independent technological route should be respected
The implementation of diesel emission standards for diesel engines has been discussed in society for at least one year. In fact, many prepared companies have already started over this period. Through the technical preparation of various companies, we learned that companies such as Yuchai and CNHTC have also made more preparations. Even companies such as Shangchai, which are based on common rail technology, have seen applications in their product catalogs. Domestic product of a variety of monomer pumps. The reporter has noticed that in order to be able to regain lost parts of the market in the country’s third product, Shangchai set up a special task team to promote the country’s three products.
The diesel engine manufacturers, which are more difficult to digest in terms of costs, are also active in the country’s products. For example, a variety of on-board models, with ASIMCO Nanyue's and Liaoning Xinfeng's single pump and common rail system, were being used, and purely domestic forces were acting quietly.
With the advent of the country's three countries, common rail, single pump and electronic control combined single pump, in-line pump + cooling EGR, foreign traditional technology route and domestic applicable technical route showdown, a real knife game player has been Expand. In fact, regardless of the route, consumers are willing to see the applicable products and reasonable prices. As one industry expert put it, the runners who could have stood on the same starting line were standing in different positions on the runway due to ambiguous influence of the policy. It is hoped that the domestic independent technological route will not be subject to human interference, and will play its due role in the implementation of the country’s third process and obtain its due market share.
China and Europe implement the comparison of emission standards for motor vehicles (light vehicles)
Standard China Year of implementation Year of European implementation Difference (years)
Before the first country (equivalent to Europe 0) 1990 1973 17
State One (equivalent to Euro I) 2000 1992 8
State II (equivalent to Euro II) 2004 1996 8
State 3 (equivalent to Euro III) 2007 2000 7
State 4 (equivalent to Euro IV) 2010 (expected) 2005
View related topics: State III standard commercial vehicle companies usher in new challenges
Product modeling and design ability has been greatly improved, but after the completion of product design, before mass production, we must make samples to express the design idea, quickly obtain the feedback information of product design, and evaluate and demonstrate the feasibility of product design. In today's increasingly fierce market competition, time is benefit. In order to improve the competitiveness of the product market, the whole process from product development to mass production is urgently required to reduce the cost and improve the speed. The emergence of rapid prototyping technology provides an effective way to solve this problem, and has attracted much attention at home and abroad
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