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On the same day, the Yucai YC6L-40 diesel engine provincial technical achievement appraisal meeting was judged by the 9-member expert appraisal committee organized by the Science and Technology Department of Guangxi Zhuang Autonomous Region. The experts were from Tsinghua University, Tianjin Automotive Technology Research Center, Shanghai Jiaotong University, Tianjin University. Leaders and experts in the industry, such as Jilin University, Zhengzhou Yutong Bus Co., Ltd., Xiamen Jinlong Bus Company, and Guangxi Automobile Tractor Research Institute. The appraisal committee reviewed the technical documents of the project, listened to the technical and work reports of the project completion unit, and on-site evaluated the prototype of the YC6L-40 diesel engine and the prototype equipped with the engine, and questioned the technical issues related to the project.
According to reports, the identified diesel engine displacement is 8.4 liters, the power range is 260 hp to 350 hp, the main innovation point is the combination of electronically controlled single pump high pressure fuel injection system and electronically controlled selective catalytic reduction (SCR) exhaust aftertreatment system. The electric control unit pump cooperates with the newly developed combustion system to ensure high-efficiency clean combustion of fuel. The carefully optimized piston, piston ring and cylinder sleeve friction pair further reduce the oil consumption. These measures are effective. Reduce particulate emissions to 20% of Euro III. Advanced SCR exhaust aftertreatment device to effectively reduce nitrogen oxide emissions. The machine not only discharges into the country IV, is environmentally friendly, compact in structure, strong in power, fast in loading, good in acceleration, and low in fuel consumption. It is 5% more fuel efficient than the National III engine and has better reliability. It is a new generation of luxury passenger cars and cities. The ideal supporting power for buses.
"YC6L-40 diesel engine" appraisal opinion believes that "YC6L-40 diesel engine has improved the lubrication system based on the YC6L-30 diesel engine, effectively controlling the particulate emissions. It adopts the international advanced 'supercharger' The technical route of the cold + electronically controlled fuel injection system + SCR (selective reduction aftertreatment system), the project team combined with the actual situation of China's fuel and roads, carried out the development of the control strategy and system matching, the machine emission indicators meet the country The IV emission standards require fuel consumption to be reduced by approximately 5% compared to the National III engine."
According to the appraisal opinion, "YC6L-40 diesel engine is China's first self-developed heavy-duty diesel engine that meets the national IV emission standard, and has created conditions for the use of the national IV engine for buses in cities such as Beijing. YC6L-40 diesel engine is Based on the YC6L-30 diesel engine, the fuel high-pressure injection system, cylinder liner piston ring and SCR emission after-treatment system were developed. The production process and measures adopted are advanced and mature, and have good application prospects and promotion conditions." "YC6L-40 diesel engine has been loaded and operated, which has played a demonstration role in the implementation of China IV emission standards and has good social benefits. After the engine is put into production, it will bring good to the whole machine, vehicle manufacturers and parts enterprises. Economic benefits."
The appraisal opinion confirms that “the product has been independently developed and has independent intellectual property rights. The whole machine technology has reached the domestic leading level and is in sync with the international advanced level.â€
According to Dr. Li Qin, Senior Technical Consultant, Chairman of Yuchai Machinery Co., Ltd., in the R&D process, Yuchai R&D team also carried out high-sulfur fuel and low-purity blue in the world for the first time according to China's reality. The durability test of the SCR exhaust aftertreatment system under the condition of vehicle urea) accumulated experience and found a solution. At present, this work has been included in the National 863 Advanced Automotive Technology Project, which will challenge the technical difficulties of Euro VI on the new generation of Yuchai engines. He revealed that according to normal working arrangements, the Yuchai diesel engine with the emission standard V will be available next year. As for the technically demanding national VI diesel engine, it is estimated that it will not be available until 2010.
At the appraisal summary meeting, Wang Binggang, the chairman of the appraisal committee and former director of the Tianjin Automobile Research Center, said that Yuchai is not very good in research and development in Guangxi, insisting on independent research and development, and has always maintained leading research results. It is really rare. This is a A career with a broad prospect. In terms of technological innovation, Yuchai is a model and has set an example in the same industry across the country. Some experts believe that China's national IV diesel engine with independent intellectual property rights will not have a heavy economic burden like the introduction of the Euro III engine.
According to the data, with the rapid development of China's auto industry, in the source of pollution close to the human body, motor vehicle emissions account for a large proportion, even for a wide range of pollution problems, such as ozone and photochemical smog, and motor vehicle emissions In particular, NOX emissions are closely related. At present, although some cities have implemented national II and national III emission regulations, the problem of atmospheric pollution from automobile exhaust in many places has not been solved. To improve the air quality and reduce the pressure on the atmosphere of motor vehicles, only the pace of tightening the emission limits should be accelerated, and more stringent emission regulations should be implemented in advance. In order to welcome the arrival of the Olympic Games, Beijing will implement the National IV emission regulations in advance in 2008; in addition, many large cities that are plagued by air pollution problems may also implement the National IV in advance.
As the largest engine manufacturer in China, from the perspective of protecting the living environment, building a benign industrial chain and ensuring sustainable development, Yuchai put forward the strategic idea of ​​“green development, harmonious and win-win†this year, and determined that “become green, harmonious, The spokesperson of responsibility is the corporate mission of Yuchai. It is committed to creating a modern life for the people of the country while taking the initiative to undertake the social responsibility of protecting the atmosphere, reducing pollution, maintaining a clean, blue sky and protecting human health. In order to help Beijing, Shanghai and other cities implement the National IV emission regulations in advance and provide leading and applicable power demand, in February 2006, Yuchai's first YC6L-40 diesel engine with the highest emission standard in China was successfully developed. In one year, this model passed the provincial technical appraisal today, becoming the first national and only national brand diesel engine certified by the National IV technology.
Li Tiansheng, general manager of Yuchai Machinery Co., Ltd. said that Yuchai’s mission is to “satisfy the public’s power needs with excellence and leadershipâ€. With excellent research team, strong R&D strength, advanced experimental processing equipment, and the support of internationally renowned engine technology companies, Yuchai has been leading the public consumption and promoting social progress in terms of independent innovation and product development. The various engine products developed in recent years have always met the requirements of national emission standards two years ahead of schedule, and have made unremitting efforts and outstanding contributions to improving the living environment of Chinese people. With the step-by-step improvement of national emission standards and regulations, Yuchai will further establish its leading position in the development of domestic automotive engines. Following the enterprise development strategy of “green development, harmonious and win-winâ€, Yuchai strives to achieve circular economy, promote environmental optimization, realize enterprise and society, and build harmonious coexistence between man and nature, man and society through technological progress and efficient labor. .
China's independent research and development of national IV diesel engine passed the provincial technical appraisal in Yuchai
People's Network Guangxi Window Yulin December 19, 2006 Reporter Zheng Shengfeng, Zhang Wei reported that today, China has finally passed the provincial-level technical appraisal of the national IV diesel engine - YC6L-40 diesel engine successfully passed the appraisal in Guangxi Yuchai Machinery Co., Ltd. The first domestic IV diesel engine in China was also successfully launched by the company in February this year. The birth of the national brand country IV Yuchai diesel engine with independent intellectual property rights indicates that “China’s largest diesel engine production base†Yuchai’s independent research and development strength leads the country’s peers, and it also shows that the “China Power First Brand†Yuchai machine is successfully practicing. With the development concept of “environmental protection power†proposed by myself, it also shows that the research and development level of China's diesel engine ranks among the world's popular ones, keeping pace with the international advanced level.