Nowadays, the national quadruple post-processing route for high-pressure common rail and SCR has been well-known to everyone and has gradually gained market recognition. However, there are still a lot of old drivers, because of driving habits, still miss the engine of the previous mechanical pump technology, "but the engine of the mechanical pump technology is difficult to meet the country's four emissions policy, has been eliminated by the market. In fact, four There is also a technology that can meet the emission standards and can be used as a substitute for large mechanical pumps. That is the electronically controlled monomer pump system independently developed by FAW Xichai . Where is the electronic monomer pump Actually, the working principle of the electronically controlled monomer pump is basically the same as that of the high pressure common rail. The sensor feedbacks the engine working signal to the ECU, and then the ECU commands the opening and closing of the electromagnetic valve through different working signals to achieve the spray. Accurate control of oil timing, fuel injection, etc. The difference is that the common rail system controls the solenoid valve on the injector, while the electronic unit pump controls the solenoid valve on the pump. Domestic oil products have always been criticized by everyone. The high pressure common rail system is the solenoid valve on the controlled fuel injectors. It has high quality requirements for oil products. If long-term use of low-quality diesel fuel, it will easily lead to clogging of injectors. The system is greatly damaged. The electronically controlled monomer pump is a solenoid valve on the controlled pump. Similar to the injector used in the previous large mechanical pump, the injector has a relatively large bore diameter, and the adaptability of the oil product can be achieved by the secondary mechanical pump. Level. In addition, the electronic monomer pump has an advantage that most of the components still continue the design structure of the large mechanical pump before, the structure is very simple, and has a cylinder and a pump features, you can replace the oil nozzle, oil pump, maintenance is very simple and convenient The maintenance cost is also low. The cost of a single electronically controlled single pump is about 400 yuan, and the price of a high pressure common rail system is tens of thousands of yuan, and due to the implementation of the National IV policy, many drivers are facing high pressure common rails. The system is still not well understood. It is only known that all four cars are using high-pressure common rail systems, and the unqualified oil products in many places cause the high-pressure common rail system to be more easily damaged than the electronic unit pump system. Why is the electronically controlled monomer pump not universal The foreign spare parts represented by Bosch have aggressively promoted the high pressure common rail system in China, and the share of domestic diesel engine market is very high. This is a big barrier to the promotion of single pump technology. However, the high-pressure common rail system does have its own technical advantages, such as more precise control of fuel injection, and it can maintain a stable fuel consumption at different speeds, but domestic oil products have been unable to keep up with the rhythm, dragging the back of technology. . In addition, the national regulations on environmental protection regulations are increasingly stringent, and electronically controlled monomer pumps may face more complex technical problems than common rail systems. Of course, this is only for manufacturers, so for users, the advantages of electronically controlled monomer pumps Still very obvious. It is understood that at present, all the Xichai series have single pump products, and the products that have been fitted to vehicles are mainly Aowei series, including 6DL1, 6DL2, and 6DM platforms, and only Xichai is unique in heavy trucks. Body pump technology, on the FAW liberation medium truck Deutz Dachai also has the application of the technology, the existing single-pump engine truck products on the market mainly FAW Jiefang J6, FAW Qingdao æ‚V, FAW Qingdao days V and so on. For a driver friend who has a mechanical pump engine complex, it is a good choice. Granulator Machine,Rapid Mixer Granulator,Small Copper Granulator,Rotary Granulator Wenzhou Zoncic Machinery Technology Co.,Ltd , https://www.zoncicmachinery.com
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