Electric combination pump to break the monopoly of foreign Diesel EFI technology

Diesel EFI technology is a representative technology of automotive core components. For automotive diesel engines, the EFI system plays a role of "heart" and "brain." The breakthroughs in emissions, power density, and NVH (noise, vibration, and harshness) of automotive diesel engines in the past decade have mainly been attributed to the application of EFI technology. Due to the development of EFI technology requires the support of a number of technologies, the accumulation of large amounts of data and experience and huge amounts of money into the ranks of technology-intensive and capital-intensive products . For a long time, the car's core components technology has been monopolized by several foreign auto parts industry giants such as Bosch, Denso and Delphi.
Due to various reasons, China's diesel oil nozzle industry in the long-term Weak state, the main products are generic, lack of independent development capabilities in the EFI technology, the domestic industry is basically in a blank state. The high threshold for foreign companies to apply their EFI products (including product selection, price, maintenance conditions, etc.) has made China's automobile diesel industry pay a heavy price for meeting the emission standards of the third country.
To meet the equivalent of Euro Ⅲ III emission regulations require the application of automotive diesel engine EFI technology, which technically does not seem to exist obstacles, because a variety of EFI systems have long been widely used in foreign countries, but the domestic automotive diesel companies consider the application of electricity Spray technology will encounter the following problems: First, only a small number of common rail system EFI technology to choose from; Second, most of the existing diesel engine products to continue to produce in the future and can not make major changes, the choice Of the EFI system must be adapted to the design characteristics of diesel engines; Third, the EFI system products provided by foreign enterprises higher prices, in many cases exceeded the acceptable level; Fourth, EFI systems provided by foreign enterprises need maintenance facilities conditions Fifthly, the quality of domestic fuel oil is poor, the content of impurities and water is high, which is hard to meet the requirements of electronically controlled fuel injection system provided by foreign enterprises.
According to a large number of market research, a mainstream Diesel EFI system products that can be accepted by most domestic automobile diesel engine manufacturers should have the following characteristics: First, the technology is mature, with the basic characteristics to meet the EU Ⅲ emission regulations; Second, the shape The dimensions and mechanical interfaces are similar to mechanical in-line pumps and are easy to install on existing models. Third, the manufacturing technology is relatively simple and easy to localize to achieve competitive OEM (Original Equipment Manufacturer) prices and zero Parts prices; Fourth, compared with mechanical in-line pump to have a certain degree of succession, no excessive use and maintenance requirements; Fifth, better adaptability to fuel quality.
Wang Weite has been committed to the independent development of diesel EFI technology, its self-developed electric control combination pump is developed on the basis of electric control single pump, which through a high-speed solenoid valve to open and close to the spray Oil timing and fuel injection control, are time-controlled systems, compared with position-controlled systems, dynamic response faster. The main difference between the electrically controlled combined pump technology and the electronically controlled monoblock pump is that it exists not as a single unit but as an integrated unit and that several of the pump units are integrated in a single pump box and that these pump units are actually Redesigned micro-monomer pump. The mechanical structure of the electronically controlled combined pump is even simpler than traditional mechanical in-line pumps with a small number of parts and is expected to achieve high reliability. Chengdu Wang's Witt independent development of electric control combination pump with WP1000 and WP2000.
Upon the introduction of Wang's Wit electric control combined pump technology, it has been widely concerned and widely accepted by the domestic automotive diesel engine industry. It has signed agreements with more than a dozen major automotive diesel engine manufacturers to test the electric control combined pump. In January 2006, the state environmental protection department began to announce the first batch of China's three emission diesel engines. Witt was the first domestic supplier of fuel system announced on the announcement. At present, Yuchai, Yangchai, Tianjin Lovol, Dachai, Xichai and other three diesel engines equipped with Witt electronic control combination pumps have been put on the market. Since 2007, Witt has delivered 4,200 sets of electronically controlled combined pump systems to these manufacturers.
At present, the first 80,000 sets of electric control combined pump production line has finally become a real product from the drawings, SOP (Standard Operating Procedure) date in November of this year. The second 80,000 sets of electric control combined pump production line has begun procurement, April next year to achieve SOP. By the end of next year, Wang's Witt will form a production capacity of nearly 200,000 sets of electric control combined pumps.