In recent years, some of the heavy-duty truck engines in the European market have exceeded 700 horsepower, and the torque also exceeds 3000 N·m. Engine emissions can meet Euro V. Looking at the domestic market, with the further increase of freeway mileage and the leap in logistics conditions, the proportion of heavy trucks in the truck market pie will increase significantly in the future. The Dongfeng Cummins ISZ 13-liter engine equipped with the professional logistics heavy truck D760 Tianlong flagship is known by industry experts as the leading heavy truck engine built on an international platform. Next, Xiaobian took everyone to specifically interpret the Dongfeng Cummins ISZ 13 liters engine.
Dongfeng Cummins ISZ 13 litre engine
The Dongfeng Cummins ISZ 13-liter engine is equipped with a 13-liter engine, and the ISZ13-liter maximum torque reaches 2508 N·m. High torque means that the engine has a quick start, rapid acceleration, and strong climbing ability. In other words, it is "a lot faster and runs faster." The Dongfeng Cummins ISZ 13 litre engine uses the ultra-high pressure (XPI) fuel injection technology jointly developed by Cummins and Scania, and its power has achieved a major breakthrough. The technology was also applied to the Scania heavy truck with 13 liters of Euro 5 and Euro 6 engines.
â— Large horsepower, fuel consumption
The ISZ13-liter engine has a horsepower range of 425-525 horses. The ISZ high pressure common rail fuel injection technology was jointly developed by Cummins of the United States and Scania of Sweden. It fully takes into account the future development trend of diesel engines and is the most representative of the ISZ 13 series. One of the technologies. The fuel system has an injection pressure of 2400 bar (typically up to 1800 bar in the industry), and an ultra-high pressure injection system makes the fuel atomize better, resulting in smaller fuel particles and faster injection rates, allowing the fuel to burn more fully.
The ISZ 13-liter engine is equipped with the Cummins EBP smart human energy-saving system, EBP is economic, standard, power three gear, under different conditions can be switched, E represents the economic block, suitable for half-load and no-load Use, B block is the standard gear, which belongs to the power and economic balance gear, suitable for driving under standard load conditions, and P gear is the maximum power gear. These three modes can ensure that the engine is always kept in the optimal economic range. Operation, saving fuel consumption and improving transportation efficiency.
The Dongfeng Cummins ISZ 13 litre engine also has a variable speed electronically controlled silicone oil fan, which is a smart fan, can control the fan speed according to the engine's water temperature, to ensure that the engine at a comfortable temperature, greatly reducing the capacity due to high temperature Losses keep the engine at a reasonable temperature, saving energy. In terms of fuel-efficient performance, the Dongfeng Cummins ISZ 13-liter engine has a multi-pronged approach with a minimum specific oil consumption of 185 g/kW·h.
â— Tempered, refined achievements
The Dongfeng Cummins ISZ 13-liter engine project began research and development in 2005. The ISZ engine is developed through the Cummins East Asia Research and Development Center. It is powered by Cummins Global R&D Network and is faced with global products. It is developed according to the National IV emission standards and can be upgraded to the National V.
Cummins's product development has a development model of "analysis-guided design", computer simulation and analysis methods, and real-time sharing of global product data. These have greatly improved the quality and efficiency of ISZ's R&D. In terms of emissions, it uses Cummins Emissions Processing System (CES) selective catalytic reduction technology to meet the country's four emissions, and has a smooth upgrade capability to European V and US EPA 2010 and above regulations.
In the test, 13 liters of engine cumulative operating time reached 30,000 hours, more than 20,000 hours of effective bench test, trucks carrying the Dongfeng Cummins ISZ 13-liter engine in China, the United States, Australia, high-speed, plains, hills, mountains and other different The road condition is verified by the road mileage exceeding 6 million kilometers; its main components include crankshafts, connecting rods, cylinder blocks, and cylinder heads, all undergoing over 10 million fatigue tests; ISZ 13-liter engine has experienced 20% super oil, 20% Overpressure, 150% overspeed and other reliability tests; standard can be Bo engine brake system, can effectively absorb 95% of the kinetic energy of high-speed vehicles, braking efficiency increased by 55%.
â— Market demand situation
The expansion of the market size of “gold displacement†makes the horsepower segment with the highest profit margin, whether it is for vehicle manufacturers or engine manufacturers, have more space; secondly, Z series engines have special strategic significance for Dongfeng Cummins. : It is a key step for Dongfeng Cummins to build a comprehensive core competence in R&D, manufacturing, and marketing from a purely manufacturing and marketing function. It is also a strategic technological product breakthrough in the heavy-duty engine field in China. It can be said that the Z series heavy-duty engine is the strategic decision made by Dongfeng Cummins based on the development trend of “lighter, lighter, heavier†in the engine market. The 13-liter heavy truck project will, to a certain extent, guide the future technology of Dongfeng Cummins. Product development direction.
â— After- sale service is guaranteed
As a new product, Dongfeng Cummins dispatched service engineers and manufacturers to communicate with each other during the installation of the machine to understand the various requirements that may occur during the use of the user. Prepare it in advance and use it as soon as possible after the machine is put into use. Speed ​​responds to user problems.
Performance characteristics:
1. Power cylinder adopts 6-cylinder, 24-valve design, four valves per cylinder; front gear train design; single-piece piston, inner cooling oil passage and so on.
2. After-treatment system components adopt GRUNDFOS after-treatment system;
3, according to Cummins heavy engine design, cylinder, cylinder head, crankshaft, connecting rod, camshaft, oil pump and Cummins gravity engine design are similar.
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