"Oil prices rose again." From midnight on May 24th, the price of domestic refined oil was raised again. The prices of gasoline, diesel and aviation kerosene increased by 500 yuan per ton. This is the first time that the refined oil price has been adjusted since March 26. The second time, it was also the biggest increase in the price of oil, and the retail price rose by more than 4 cents. Recently, the oil price in the international market has risen sharply again and fluctuates around US$70 per barrel. Experts estimate that oil prices will remain high this year.
As the automotive industry, which is closely related to refined oil, especially the engine industry, has any opinions on the current situation of rising oil prices and high oil prices. For this reason, the reporter interviewed Yuchai Machinery Co., Ltd., a leading diesel engine company in China.
According to Yuchai's technical experts, in recent years, Yuchai has been responsible for the "dedication to clean power, creating a harmonious environment" and has made unremitting efforts on these two important topics of energy conservation and environmental protection. The sense of responsibility has led Yuchai to make a series of major breakthroughs in technological innovation, and has continuously introduced various energy products that are more energy-efficient and environmental-friendly. Among them, the application of the four-valve technology has a significant effect on reducing energy consumption.
Industry experts explained that reducing the intake and exhaust resistance of the engine and the reasonable matching of the fuel injection nozzle and the combustion chamber can effectively reduce the engine energy consumption, and the four-valve technology can further increase the flow cross-sectional area of ​​the intake and exhaust of the engine with the same bore diameter. It can effectively reduce the intake and exhaust resistance of the engine, and can effectively increase the intake capacity of the engine. At the same time, the four-valve technology can better solve the problem of reasonable matching between the fuel injection nozzle and the combustion chamber, so that the fuel atomization is better and the fuel Burn more fully. The four-valve engine also solves the problems of reducing the intake and exhaust resistance of the engine, as well as the reasonable matching between the nozzle and the combustion chamber. Therefore, the four-valve technology is an effective measure to save energy and has gained popularity in developed countries. Domestic heavy trucks must win four-valve engines if they want to gain a larger market share in the global market; the central government advocates building an energy-saving society. At present, although four-valve engines are not required to be mandatory for the time being, it is not ruled out that such a requirement may exist in the future.
Yuchai's four-valve engine product development work has been carried out for several years and is relatively low-key. In 2002, Yuchai carried out the first YC6L four-valve engine test. At the end of 2002, Dongfeng Liuzhou Automobile and Shaanxi Zhongqi also developed the supporting YC6L four-valve engine prototype. In 2003, Dongfeng Liuzhou Automobile YC6L heavy-duty truck quietly entered the market; At the same time, the YC6M and other four-valve engine market cultivation work is quietly proceeding. Yuchai chose two-step, two-valve 6M engine for the 6M four-valve engine as the market strategy. The comprehensive advantages of Yuchai's 6M two-valve engine were recognized by users. With the fittings put in place and oil prices rising, Yuchai people saw opportunities and quietly put the Yuchai 6M four-valve engine in the second half of 2005.
On February 26 this year, China’s first YC6L four-valve engine, which met the Euro IV standard, was launched at Yuchai and interpreted the industry’s strategic positioning of “new Yuchai, new thinking, and new developmentâ€; on April 13th, JAC In China’s first special economic zone, the pioneer of reform and opening up, the Shenzhen Special Zone held a heavy truck delivery ceremony to support the Yuchai 6M four-valve engine, which was also held in the spring and also in the “Drawing Circle of Deng Xiaoping in the South China Seaâ€. This extraordinary handover ceremony in the industry has caused great shock in the industry, and people in the industry realize that this is the beginning of Yuchai’s “Spring Story†and will also be the beginning of technological innovation in China's internal combustion engine industry and the opening of China’s heavy industry. A prelude to a new era of engines.
Immediately after May 18, Yuchai 6M four-valve engine unveiled the Dongfeng Tianlong listed main venue, becoming the focus of the audience.
Interpretation of Yuchai four valve engine
The four-valve heavy-duty engine Yuchai has put on the market has two series of 6L and 6M, among which the YC6L power covers 280-350 hp, adapts to 10-13.7 meters passenger cars and 10-15 tons of heavy trucks, and the emissions can meet Euro II, Euro III, Euro IV demand, YC6M power covers 320-390 horsepower, fits passenger cars of more than 12 meters and heavy trucks of more than 15 tons, and emissions can meet Euro II and Euro III requirements.
The YC6L and YC6M two series of products are all high-grade heavy-duty engines based on the advanced technology of the global modern diesel engine in the 21st century. The German FEV-specific combustion system technology is used to ensure perfect combustion; the Euro II model is adopted. P7100 fuel injection pump ensures better fuel atomization; wet cylinder liner structure and European forced cooling piston technology are used to ensure better cooling performance; patented dot-line meshing gear technology is used to ensure lower engine noise; strictly follow FEV mechanical development procedures Mechanical development to ensure a lower engine failure rate, longer life, and warranty of 250,000 kilometers (or 20 months).
In terms of high-pressure oil pump configuration, YC6M engine can be equipped with BOSCH oil pump or domestic oil pump according to the user's favorite and purchasing ability.
Yuchai believes that the gold medal is not as good as the user's praise and the gold cup silver cup is not as good as the user's word of mouth. The dealers report that Yuchai 6M four-valve engines have caused great shocks everywhere. Recently, many customers set their cars to favor Yuchai four-valve engines, and some users have purchased the engine several times. A user in Shandong consulted with a technical expert and bought two Yuchai 6M four-valve engines and switched them to the in-use models. The user had a deep understanding that the four-valve engine was a higher-grade engine than the traditional two-valve engine. The engine is expensive and acceptable. It is as if a color TV is as unlikely as a black-and-white TV to have a difference in quality. Yuchai's 6M four-valve engine is not only more fuel-efficient but also more comfortable.
Under the condition that China's oil prices are operating at a high level, Yuchai, which once led the Chinese internal-combustion engine to supercharged, moderately cooled, and upgraded emissions, has introduced the four-valve engine in a timely and accurate manner, highlighting its leading advantages. "To satisfy the public's impetus with excellence and leadership" is Yuchai's mission. We believe that Yuchai has a strong sense of social responsibility in building a resource-saving, environment-friendly society and can make greater contributions.
View related topics: Yuchai won the "China Brand Annual Award NO.1" (internal combustion engine) title in 2007
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