Yuchai engine relies on electronically controlled unit pump to achieve Euro III emission

The Delphi electronically controlled unit pump system is one of the most widely used EFI systems in the European medium and heavy duty truck market. This system not only provides perfect emission control, meets Euro III, Euro IV emission requirements, and has superior reliability. And fuel quality adaptability, there are examples of reliable operation that can reach 1 million kilometers. At the same time, the system also provides a large number of vehicle auxiliary control functions, which is conducive to optimizing vehicle matching and realizing vehicle network control.

Technical upgrade and improvement of Yuchai Euro III engine

To achieve the emission level of diesel engines to meet Euro I and Euro II standards, the continuous upgrading and improvement of engine technology is the only way to complete the upgrade of Euro II to Euro III. In this technology upgrade, the use of electronic control systems is only one of the key technologies. The Yuchai Euro I and Euro II engines have comprehensively optimized the Euro II machine from various aspects such as design, materials and production control, including the following main points:

I. All-round combustion development technology: It is one of the key technologies to improve combustion with high-pressure injection, optimize in-cylinder emission control, and realize Euro III.

Second, deep machinery development: is an important means to ensure the engine strength and reliability after increasing the injection pressure.

Third, the external unit pump assembly technology: This is Yuchai's patent, which is conducive to the maximum sharing of conventional engine parts and reduce the manufacturing cost of the Euro III engine.

Fourth, reduce the fuel consumption technology: the collection of advanced technology at home and abroad to improve the structure and friction pair design, greatly optimized the oil consumption, oil fuel consumption rate as low as 0.45 ‰, providing sufficient space for the control of Euro III, Euro IV emissions .

V. Production consistency control: The use of advanced technology including thermal test bench integrated information system to strengthen the control of parts and components, strict control of cylinder consistency, production consistency, etc. in the production process, to ensure the safety of each engine Excellent factory performance and meets mass production tempo.

Sixth, matching calibration technology: the first domestic independent engine system integration and vehicle matching calibration technology to ensure the optimal matching of the engine, to provide excellent vehicle matching service to the OEM, and to achieve the whole Personalized, menu-style functional requirements of the depot. Through the fine vehicle optimization and calibration, the perfect vehicle matching can be realized, the vehicle function can be optimized to maximize the vehicle, and the end user can be provided with satisfactory and highly profitable transportation tools.

Seven, fault detection technology: the collection of the best EFI control technology team in China, with nearly 10 years of experience in EFI application, developed the most advanced fault diagnosis tools, compiled the most detailed troubleshooting and troubleshooting user manual, established a remote The fault diagnosis system provides timely and in-place fault detection services at any time.

Yuchai electronic control engine development capability

Yuchai has a first-class national-level enterprise technology center and a national key laboratory, and has cooperated with many internationally renowned research institutes and enterprises at home and abroad to create a first-class engine development base. Especially in the development of electronically controlled engines, Yuchai has devoted the greatest attention to it, invested a lot of manpower and material resources, and established the domestic top-level electronically controlled engine development capability.

First, a high-quality talent team: the establishment of a national-level professor and experts as the core, with 12 doctors, 35 masters and many middle and senior titles engineering and technical personnel of the Euro III technical research team.

Second, strong equipment resources: with world-class Euro III and Euro IV emission test bench, fuel injection system test equipment, the only deep thermal shock test bench in China, the only dual power output test bench in China, and the domestic leading low temperature Performance test internal body, domestic advanced semi-anechoic test room, and self-developed electronically controlled Euro III and Euro IV engine bench calibration test bench, HIL hardware-in-the-loop simulation test bench.

Third, the world-class development procedures and specifications: for the Euro II and Euro III engines, specially designed and developed deep mechanical development procedures and strict development verification specifications with Yuchai characteristics and in line with China's special national conditions, to ensure that Yuchai machines can adapt Various harsh conditions of use.

Fourth, the use of key technologies for independent research and development: emission control technology that meets Euro III and Euro IV emission standards, electronic control technology with independent intellectual property rights, NVH adapted to new noise regulations, alternative fuel technology for energy strategy and emission control.