ECU is a heavy-duty diesel engine high pressure common rail electronic control system independently developed by Weichai Group and with independent intellectual property rights. On the morning of May 8, 2012, Weichai Power held a launching ceremony at its R&D center, announcing that China's first high-pressure common rail electronic control system had undergone stringent emission tests, road tests, and three-high verification, and that it will be officially put into the domestic market in batches. The monopolistic situation of foreign companies in this field will be broken through the listing of this new technology of Weichai. In 2008, Weichai Group initiated the research and development project of its own ECU, making full use of strategic resources within the group, increasing R&D investment and talent introduction, and establishing a world-class electronic control R&D platform. The electronic control R&D team adopts international advanced development technologies, tools and tools, analyzes and digests and absorbs existing international mature products. It is equipped with a complete development tool chain, defines the organizational structure, and optimizes the traditional ECU development and verification process. Various development-related specifications have been established, and ECU hardware and software development environments have also been established. After several years of hard work, Weichai has now built China's top R&D experimental base. By integrating relevant domestic resources, it has completely overcome the technical difficulties of the engine electronic control system and mastered this core technology in one fell swoop. The steady state control accuracy of the autonomous ECU's rail pressure is within 10 bar, and it supports up to 5 injections. It can realize the control, diagnosis and service testing of various subsystems of the entire vehicle and engine to meet the emission requirements of the country V, and the service life is as long as 20,000 hours. Weichai's autonomous ECU adopts a 32-bit high-performance microcontroller and has undergone various rigorous tests, including three-high test, high and low temperature test at -40-105°C, salt spray test, vibration test up to 10g, EMC test for electromagnetic compatibility And more than 1700 hours of accelerated life testing to ensure that the ECU can work in a variety of complex environments. The development and production of ECUs not only promoted the independent R&D progress of China's auto and parts industries, but also made significant contributions to the technological progress of the engine industry. It also made Weichai the technological leader in this field. After the ECU is put into production, the cost of the electronically controlled engine can be greatly reduced, and the development of the follow-up new function that meets the market demand will speed up, and the flexibility of the diesel engine fuel system matching application will be greatly enhanced.
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Weichai's independent research and development ECU bulk release ceremony
As early as the 1980s, the research work on the electronic control system for diesel engines in China began. Especially since the mid-1990s, many universities, research institutes, and companies have developed electronic control systems. However, the software and hardware development of ECUs require the accumulation of experience and knowledge. Due to the weak foundation, decentralized technical power, lack of sufficient manpower, capital investment, and effective organization and management, China's electronic control technology R&D progresses slowly. This has led to a difficult step in the industrialization of ECUs. Many of the developments are in the sample or pilot stage, and many of the results have even remained in the laboratory. In terms of technology, although there is a certain gap between us and the international advanced level, if we can achieve industrialization, it is still possible to continuously improve and strengthen our own strength in the development process. However, the status quo of the cruel market is like a big mountain, and it is on the road of technological industrialization, which makes it difficult for Chinese enterprises to overcome.
The engine electronic control system is the core technology of the modern diesel engine, in which the ECU is the core of the entire electronic control system and can basically be divided into three modules: hardware, underlying operating software and application layer control software. The most important value of ECU is embodied in the application layer control software, and the hardware and underlying operating software can be customized by a professional company according to the requirements of the enterprise. The mature diesel electronic control systems are all monopolized by foreign companies. The ECU is equivalent to the engine's brain and has its own ECU, representing whether a company has a long-standing core competence. Due to the lack of the core technology of the electronic control system, the development of the diesel engine industry in China has been severely hampered by people for a long time, and the product cost has increased and the profit rate has declined. Therefore, diesel electronic control technology has become a bottleneck restricting the development of China's diesel engine industry.
Wei Chai, whose mission is to revitalize the national industry, has long realized that it is necessary and important to develop autonomous electronic control systems. Over the years, Weichai has been trying hard to master its own core technologies and strengthen its original innovation capabilities to adapt to the increasingly accelerated upgrading of engine electronic control systems, so that China's internal combustion engine industry can completely get rid of external dependence on core technologies.
With China's first self-developed heavy-duty diesel engine high pressure common rail electronic control system ECU put into the market in batches, Weichai plans to cover its own ECUs from small engines to large engines in the next two years, enabling Weichai's electronic control technology to reach the international advanced level. Build a world-leading all-round electronic control R&D team.
With the acceleration of industrialization, the development cost of electronically controlled diesel engines will be further reduced, the development cycle will be gradually shortened, and service and maintenance capabilities will be greatly enhanced. At the same time, the establishment of an autonomous electronic control platform will help establish the industrialization of the new electronic order control system for the engine parts supply market, increase the control and leading capability of Weichai for the market and technical routes, and enhance the Chinese internal combustion engine industry. International market competitiveness and discourse power.
