Under the dual-carbon target, the transformation of new energy sources for commercial vehicles is the general trend. Hybrid technology can adapt to the multi-purpose and multi-scenario use characteristics of commercial vehicles, and the technology is mature and has market application prospects. It is the most cost-effective and grounded choice for upgrading the traditional commercial vehicle power system and realizing the dual-carbon target of commercial vehicles for a long time to come.
The plug-in hybrid power system of high-end intelligent light truck with Dewei dual engines is composed of the diesel engine of Dewei D20/D25 in Yunnei Power, the diesel engine of G20 gasoline engine and the dual-motor power split hybrid system of DH45 in Min Heng Dewei Power. Compared with the traditional fuel vehicle, it can get a green license, and on the basis of realizing automatic transmission, it has higher power, lower energy consumption and wider road rights, which can effectively solve the problems of cruising range anxiety caused by pure electric vehicles and power exchange cost after battery power attenuation.
From the traditional energy to the new energy track, the power system is the core issue that card friends are most concerned about. Today, I will make a detailed interpretation for you.
Dewei’s "Double Engine" hybrid system adopts input power split and strong mixing technology.
At present, there are three mainstream hybrid technical schemes, namely series, parallel and series. The hybrid vehicle is very different from the traditional energy vehicle in optimizing and matching the power chain, which requires professional people to do professional things. When the vehicle equipped with the Dewei dual-engine hybrid system is in different driving states, such as starting, reversing, accelerating, climbing, high speed, etc., the power of the engine and the motor respectively intervene or cooperatively drive the vehicle through the PSD Power Split Device to meet the power demand of the whole vehicle. "Double engines" can realize intelligent power distribution on demand together, and have the functions of automatic start-stop, parking power generation, braking energy recovery, etc. In the hybrid mode, the intelligent adaptive intervention and cooperation of motors ensure that the power performance is far better than that of traditional fuel vehicles, and the power performance is stronger. At the same time, the engine is always kept running in the best working condition range, which does not cause power waste and is more economical.
Yunnedewei D20/D25 diesel engine is believed to be very familiar to many light truck users. It has been tested by the market and has a good reputation in terms of power, fuel consumption and reliability. The industry-leading lightweight level is also very suitable for the low self-weight requirements of hybrid light trucks. Yunnedewei G20 gasoline engine is the first commercial vehicle gasoline engine specially developed for commercial vehicles in China. In order to adapt to the characteristics of hybrid system, Yunnedewei D20/D25/G20 hybrid engine has also been developed and optimized, which can better meet the requirements of hybrid system.
Dewei "Double Engine" Power Hybrid System Assembly
Min Heng Dewei Power DH45 dual-motor power split hybrid system, which adopts a completely positive vehicle-level powertrain development process, is completely independently developed, and has more than 100 patented proprietary technologies. It is the first official mass-produced product in China to apply the power split technology to the flat-wire oil-cooled card-issuing motor in the commercial vehicle field. Its characteristics are E-CVT stepless speed change, adaptive and timely adjustment of speed ratio, high-speed oil-cooled motor efficiency of over 95%, small size, low temperature rise and low noise. The gearbox has been tested by the equivalent actual road spectrum of 600 thousand kilometers on the bench for steady and dynamic cycle durability, and its reliability is extremely high. The motor system and gearbox mechanical system are highly integrated. The weight of all-aluminum gearbox is only 110Kg, which can meet the lightweight requirements of the whole vehicle. The continuous power of generator motor is 40kw, with a peak value of 70kw, and the continuous power of drive motor is 65kw, with a peak value of 125kw, which can fully meet the requirements of pure electric driving of the whole vehicle. At the same time, in the hybrid mode, the acceleration of the whole vehicle from zero to 100 kilometers is less than 18.5 seconds, far exceeding the average level of about 30 seconds of traditional fuel vehicles, and the climbing degree is over 30%, and the power level is far exceeding that of traditional fuel vehicles with the same displacement.
The dual-motor controller (PEU) device of Min Heng Dewei Power DH45 dual-motor power shunt hybrid system is completely developed according to the requirements of vehicle regulations. The design concept is compared with the standard passenger car control technology. The EMC electronic compatibility reaches the strict standard of Class3, and the product stability is higher. The DC/DC is integrated internally, and two high-voltage branches of 12V/ 2KW and 24V/ 3.5KW can be selected. Combined with two high-voltage branches of battery pack, it is more comprehensive from the perspective of vehicle system. Four high-voltage branches can meet other requirements of the whole vehicle.
The hardware and software of the hybrid controller (HBU) of Min Heng Dewei Power DH45 dual-motor power split hybrid system are completely independently developed and produced, and the supply guarantee and subsequent product upgrade iterations are independently controllable. Hardware development is strictly in accordance with the requirements of auto parts, deep integration reduces the components of hybrid power system, reduces the system cost, and carries out complete DVP verification and reliability test in strict accordance with national standards and European standards, so that information interaction is more reliable and efficient. The software is standardized, standardized, modularized and platformized based on the V-model AUTOSAR architecture. The system is stable and reliable, constantly monitors the environment, calculates data at all times, and achieves energy optimization in different application scenarios.
The first battery of Min Heng Dewei Power DH45 dual-motor power shunt hybrid system is a ternary lithium power battery with an electric capacity of 17.5 kWh, with an equivalent pure electric cruising range of 67 kilometers. In the future, it will be equipped with a Ferrous lithium phosphate power power battery with an electric capacity of 15.5 kWh, with an equivalent pure electric cruising range of 60 kilometers. With an 80L fuel tank, the single cruising range can be close to 1000 kilometers according to urban and suburban working conditions. Considering the integration of some highway road conditions,
Dewei "Double Engine" Test Resources
Performance improvement can save money, labor and worry at the same time.
Performance improvement:
In the urban working conditions where light trucks are most frequently driven, there are many cars and traffic lights, and the engine is often at idle speed and low speed, so it is difficult to reach the optimal fuel consumption range, which is also an inherent disadvantage that traditional fuel vehicles cannot solve. Min Heng Dewei hybrid system can be directly driven by pure electric motor when the vehicle starts, and it can be intelligently switched to hybrid mode when the road conditions are good or the vehicle is driving at high speed. The engine and the motor jointly provide power, which not only ensures the power demand of the whole vehicle, but also ensures that the engine only works in the economic speed range, which significantly improves the power and the fuel saving effect. At the same time, the dual motors in the hybrid gearbox can provide power to the wheels at any time according to the real road conditions and the driver’s operation intention, reducing the engine burden. Compared with the traditional fuel vehicle, the hybrid system with motor support is more powerful, and the hybrid system of 2.0-displacement diesel engine can rival the power level of 2.5-displacement diesel engine. Because the motor response is more sensitive than that of the engine, it has faster starting acceleration ability, and the motor torque is the peak at the start, and there is no noise or jitter at the same time, so the driving experience is better than that of the fuel vehicle. In daily driving, the two motors can directly output power, and the two motors and the engine form a set of combination boxing. Compared with a fist of a fuel vehicle and a pure tram, the power level of the hybrid vehicle is of course better. Compared with traditional vehicles, Min Heng hybrid system vehicles have improved acceleration by 38% and fuel economy by more than 25%.
Save money:
Since the beginning of this year, the oil price has been rising continuously. Although it has dropped recently, the price per liter near 9 yuan still makes most card users feel pressured. The fuel consumption of light truck in Min Heng hybrid system is 7.2 liters per 100 kilometers under urban working conditions, 8.2 liters per 100 kilometers under suburban working conditions, and 8.9 liters per 100 kilometers under comprehensive working conditions of C-WTVC. The operating cost is only 0.68 yuan/kilometer, which is nearly 30% lower than the operating cost of similar fuel vehicles (saving money). Plug-in hybrid vehicles can get a new energy green card and enjoy the relevant new energy road rights and purchase tax reduction and exemption policies (saving money by buying a car). Compared with pure electric vehicles, it not only has the advantages of low cost and no mileage anxiety, but also has no worries about battery decay, and the residual value of the whole vehicle is higher (low depreciation rate).
Save effort:
Min Heng Dewei Power DH45 hybrid gearbox adopts E-CVT stepless speed change to realize automatic transmission driving, which can completely liberate the left foot and right hand, and has incomparable advantages in reducing driving fatigue. Adjust the speed ratio adaptively and timely, and there will be no jam and stall. At the same time, it has the functions of idling and automatic start and stop at traffic lights, which is of great significance in reducing fatigue driving and preventing occupational diseases for city card friends who run long distances and have many traffic lights. The hybrid system comes with intelligent automatic anti-slip function, and the torque of low-speed motor is large, and the engine power is superimposed, so it is no longer a fear for novice drivers to overload ramps and other special sections.
Peace of mind:
Compared with pure electric light truck, Min Heng Dewei Power DH45 hybrid light truck can achieve worry-free heating in winter, worry-free cooling in summer, long cruising range, worry-free battery attenuation and worry-free use. At the same time, it is shared with Yunnedewei Power after-sales network, providing a one-stop after-sales service platform for power system assembly and worry-free after-sales.
It is reported that the hybrid version of the "Xinneng No.1" light truck equipped with the Dewei dual-engine hybrid system was officially released on July 15. The comprehensive factors such as the road right advantage brought by the green license, the purchase tax subsidy and the ultra-low use cost of saving 30% fuel compared with the traditional fuel vehicle will make this car very competitive.
In the current downturn of the industry, such a good car that reduces costs and increases efficiency is definitely worth having.
Dewei "Shuangqing" Batch Production Base