Heavy trucks are "big players" in fuel consumption and pollution. In 2019, the emissions of carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), and particulate matter (PM) from trucks in China were 2.057 million tons, 450,000 tons, 5.196 million tons, and 62,000 tons, respectively, accounting for 2.057 million tons, 450,000 tons, 5.196 million tons, and 62,000 tons respectively. 29.7%, 26.3%, 83.5% and 90.1% of the total emissions. Further analysis shows that the nitrogen oxide (NOx) pollutant emissions of heavy trucks are 4.607 million tons, accounting for 74% of the total emissions of various types of vehicles, and the particulate matter (PM) pollutant emissions are 62,000 tons, accounting for the total emissions of various types of vehicles. 72.4% of the amount. The carbon emissions of a heavy-duty diesel vehicle are equivalent to 100 small cars.
According to incomplete statistics, the number of construction machinery and heavy trucks in my country is nearly 15 million, of which the sales of logistics heavy trucks account for about 72%. 49.2% of the fuel consumption of automobiles is consumed by heavy-duty commercial vehicles, which only account for 13.9% of the total number of automobiles. Although the number of heavy-duty commercial vehicles in my country is much less than that of passenger vehicles, the fuel consumption of these vehicles is roughly equivalent to that of passenger vehicles. The state has promulgated a series of policies and regulations such as the "Three-Year Action Plan to Win the Blue Sky Defense War" to guide the direction of energy conservation and emission reduction in the field of heavy trucks. Pure electric heavy trucks are not suitable for the long-distance logistics industry due to problems such as mileage anxiety, and it is imperative to develop a hybrid system suitable for long-distance logistics heavy trucks. In the logistics and transportation industry, general fuel costs account for 25% to 30% of the entire vehicle cost of logistics enterprises (vehicle costs include: depreciation, fuel costs, repair and maintenance costs, tire costs, fixed vehicle fees and road and bridge fees, labor and welfare and communications. Therefore, it is particularly important to improve the fuel-saving rate of hybrid heavy-duty trucks.
Jingjin Electric is a global leader in the electric drive field of new energy vehicles. The company is committed to "doing the best electric system in the world". Recently, Dongfeng 26-ton heavy-duty truck equipped with Jingjin electric coaxial series-parallel heavy-duty four-speed box hybrid power system completed the fuel consumption test at Xiangyang National Automobile Quality Supervision and Inspection Center. Suburban 30%, urban 10%) weighted average fuel consumption is 35% lower than the national standard limit. In order to intuitively reflect the fuel economy, the fuel consumption of a 26-ton logistics vehicle is generally 1.9 yuan/km, and the fuel consumption of a vehicle equipped with the Jingjin electric coaxial series-parallel heavy-duty four-speed box hybrid system is only 1.3 yuan/km. If the fuel cost of more than 600,000 yuan can be saved according to the life of 1 million kilometers, this breakthrough can greatly reduce the fuel consumption cost of logistics enterprises and effectively increase the net profit income. In addition, the significant reduction in fuel consumption also effectively reduces emissions and pollution, contributing to the defense of the blue sky. It is foreseeable that the Jingjin electric coaxial series-parallel heavy-duty four-speed box hybrid system is expected to become an industry benchmark and lead the process of heavy truck hybridization. This technical route can be further extended to the fields of construction machinery and construction vehicles such as muck trucks, and will play a more active role in promoting the operation of my country's low-carbon economy and green logistics.
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Jingjin Electric has a wealth of new energy vehicle power system product types and power system combinations (including motors, batteries, controllers, software, new energy vehicle special transmissions, etc.), making it more powerful to integrate the entire hybrid system and realize the entire hybrid system. The system has higher compatibility, adaptability and economy. Jingjin Electric's coaxial series-parallel heavy-duty four-speed box hybrid system and its next-generation upgraded version use a number of Jingjin Electric's black technologies:
• High-performance flat copper wire motor technology: Jingjin Electric's new generation of flat copper wire technology and motor combination designed with oil cooling or oil-water combined cooling can improve the heat dissipation capacity, power density, and bearing life of the motor, and also solve the problem of traditional water cooling. The problem of structural sealing has a series of advantages such as high power density, high efficiency, and high speed.
• The third-generation semiconductor silicon carbide controller technology: It is the next-generation international-leading power electronics technology developed by Jingjin Electric. The overall efficiency is about 3% higher than that of similar competing products in the market, achieving longer battery life, lower battery costs, and improved battery life. Low fuel/power consumption.
• High-performance software control technology: Jingjin has accumulated rich experience in powertrain software control technology and vehicle control technology matching domestic and foreign new energy vehicle power systems, motors, and transmissions. Make Jingjin Electric's hybrid system more intelligent, safe, efficient and fuel-efficient.
• Efficient new energy dedicated four-speed EMAT: The EMAT transmission is highly integrated with the motor and adopts fewer gear pairs. Compared with the dedicated transmissions on the same platform in the market, it has the characteristics of compact structure and light weight, which lays a strong guarantee for fuel saving. In order to realize the fast and reliable coupling and decoupling functions of the power system, the Jingjin electric electromagnetic toothed clutch is used to replace the synchronizer and clutch with high failure rate and high loss commonly used in the market. It has simple structure, high reliability, fast coupling and decoupling. Coupling, lifetime maintenance-free and other characteristics. In order to achieve maximum transmission efficiency, the combination of direct gear and small-speed ratio rear axle with an efficiency of 99% can replace overdrive gear, eliminate gear transmission loss at cruising speed, and achieve optimal high-speed fuel consumption/electricity consumption. The optional power take-off can meet the power take-off requirements of special vehicles, and can realize power take-off in pure electric mode or hybrid mode, as well as power take-off when parking or driving, saving power by more than 30%.
Jingjin electric coaxial series-parallel heavy-duty four-speed box hybrid drive system |
Jingjin electric coaxial series-parallel heavy-duty four-speed box hybrid system can meet the requirements of GVW 20-49 ton heavy-duty trucks, tractors, special vehicles for short-distance and fixed transportation routes, muck trucks, and pure electric vehicles for off-highway systems under long-distance transportation conditions. or hybrid heavy-duty work vehicles and other models of transportation needs. Users can flexibly choose from Jingjin's existing single-motor, dual-motor, hybrid, and range-extending systems according to their own needs, and can optionally install a power take-off.
The technical leadership in many aspects is enough to illustrate the powerful strength of this new hybrid system. It can replace the power system of many diesel engines and manual or automatic transmissions currently on the market in various new energy vehicles, and achieve excellent fuel efficiency. Economical, greatly reducing vehicle operation and maintenance costs, it is a better choice for heavy truck OEMs and users.
