With the changes in economic development and market demand, heavy trucks have gradually become heavy-duty, high-power development has become a trend. Truck manufacturing companies in various countries have focused on the development and development of heavy trucks, high-power engines , and high-tech equipment.
Taking the United States as an example, sales of trucks with Grade 4 to 5 accounts for not more than one-fifth of the total truck sales; sales of trucks with Grades 6 to 7 account for one-third of the total sales; sales of vehicles with Grade 8 or above account for 1 of the total sales 2 or more. From the point of view of the structure of products sold in the market, the higher the level of products, the greater the market sales, and gradually occupy the dominant position.
Looking back at Japan, the limits of the country's heavy truck product standards were limited to 26 tons or less of the total mass. This is in contrast to the largest standard delineated by heavy trucks in Europe and the United States. In order to align the heavy truck standards with Europe, Japan plans to revise the standards, increase the total tonnage of heavy trucks to over 40 tons, and increase engine output from 257 kW to 368 kW. According to the newly revised standards, a number of truck manufacturing companies in Japan are developing super-large trucks, such as the "Super Dolphin" launched by Hino and the "thumbs" heavy truck developed by Nissan. In the next 10 years, the maximum power of Japanese trucks will reach 735kW, and the total automobile mass will reach 100 tons. Diesel engines will also adopt more advanced fuel injection systems and new catalytic particulate filters to meet more stringent environmental regulations in the future.
Relevant data show that: From the perspective of the global market, the future development of the heavy truck market mainly depends on the continuous increase in truck sales of more than 16 tons. In particular, the geographic environment of North America and European Union countries is special. The main mode of trade between countries is road freight. Since the engine R&D and production technologies in Europe and the United States are mature, some parts and components manufacturing industries are also relatively mature. Therefore, it has become an industry trend to develop and produce high-power engines to some extent. At present, the transport of large-capacity container trucks has become the development direction of road transport.
In the same way as in developed countries, heavy trucks have also emerged in the development of heavy trucks. This places new demands on engine manufacturers. At present, China's major heavy truck engine manufacturers have launched high-power products, such as Yuchai YC6L, YC6M series, Weichai WD615, WD12, WP12 series, on firewood SC9DF series, Xichai CA6DL, CA6DM, CA6DN series, Dongfeng Cummins C series, Shanghai Hino P11C and J08C series, are all in-line 6-cylinder water-cooled, turbocharged, intercooled, emissions meet the national standard III diesel engine, and the assembly of high pressure common rail fuel injection system or Delphi electronic control unit pump.
It is worth noting that at the beginning of this century, after five years of liberation by FAW , the Liberated J6 heavy truck developed through three generations was divided into 2250 and 2490 series, covering 8 to 24 tons of full range of products, with power coverage of 130 to 460. horsepower. The core power of its 2490 series is the independently developed, 6DN, 6DM, and 6DL engine with an international standard, covering 280 to 460 horsepower. The advent of high-end heavy trucks equipped with self-branded engines indicates that our country has risen to a new level in the autonomous development of vehicles and engines.
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