On June 12, at the 17th International Automobile Powertrain Technology Annual Conference (TMC2025) and the 4th Commercial Vehicle Powertrain Low-Carbon Energy-Saving Technology Development Forum, Dr. Tang Ziwei, Dean of the New Energy Research Institute of Great Wall Commercial Vehicles, introduced the development history of heavy truck hybrid routes and stated that Great Wall Commercial Vehicles’ innovative Hi4-G dual-motor intelligent hybrid architecture has remarkable fuel-saving effects, which will boost the development of heavy truck hybrid technology into the third stage.
International Top Journals Publish Research Results: Hi4-G Hybrid Architecture Shows Obvious Advantages
According to Dr. Tang Ziwei, as early as 2023, the team of Professor Han Zhiyu from Tongji University and Great Wall Commercial Vehicles conducted in-depth research on long-distance trunk heavy trucks, which are major energy consumers. The two sides jointly explored the impact of different hybrid configurations (range extension, P2, and Hi4-G) and energy management strategies on the energy consumption of hybrid heavy trucks, and some research results have been published in top academic journals in the international energy field.
The research results show that the Great Wall Hi4-G intelligent hybrid architecture has obvious energy-saving advantages and greater economic benefits. In the low-speed cruising mode, Hi4-G has a higher overall vehicle efficiency due to its series mode; during sudden acceleration, the Hi4-G dual motors can be efficiently adjusted, and the working points of the two motors can be adjusted to the comprehensive optimal range; during braking energy recovery, the Hi4-G dual-motor braking energy recovery efficiency is also higher.
Dual-Motor Intelligent Hybrid Architecture Pushes Heavy Truck Hybrid Technology into the Third Stage
The development of heavy truck hybrid systems has gone through two major stages: 48V P0 motor mild hybrid and P2 single-motor medium hybrid, but it has failed to effectively balance power and economy. Great Wall Commercial Vehicles has innovatively launched the Hi4-G heavy truck series-parallel hybrid intelligent hybrid architecture, which is 同源 (homologous) with Great Wall Hi4 technology, breaking the dilemma of technical homogenization and successfully opening the third stage of heavy truck hybrid architecture.
This innovative architecture adopts the P2/P2.5 dual-motor series-parallel hybrid form, which significantly improves vehicle power performance, significantly reduces fuel consumption, and effectively improves driving comfort, bringing a better user experience. Taking the data of its trial users as an example, in the less-than-truckload transportation from Golmud to Zaoyang, the Great Wall hybrid heavy truck achieved a 24.8% fuel-saving ratio compared with competing products, with obvious cost reduction advantages.
Full-Stack Self-Development of Core Hardware and Software: Great Wall Hi4-G Is Suitable for Various Energy Hybrid Systems
Great Wall Commercial Vehicles has achieved full-stack self-development in core hardware and software, and at the same time, it has cooperated with high-quality resources for collaborative development to build a golden power chain in the hybrid era. Especially in terms of software, relying on AI intelligent control algorithms, Great Wall heavy trucks can efficiently cope with complex working conditions, and can also achieve self-learning based on historical working condition information and data training models. Through remote online upgrades, the vehicle always maintains the best performance state.
Dr. Tang Ziwei said that it is precisely based on the advantages of self-developed hardware and software that the Great Wall Hi4-G intelligent hybrid architecture can not only save energy in diesel fuel but also significantly reduce energy consumption compared with single-fuel engines for LNG, methanol, and even hydrogen fuel, and effectively reduce carbon dioxide emissions during heavy truck operation. From joint research with domestic professional scientific research teams to the release of results in international top journals, from breaking the homogeneous technical architecture to the significant fuel-saving effects verified in actual operations, the Great Wall Hi4-G dual-motor intelligent hybrid architecture is not only the crystallization of technological innovation but also an important driving force for the commercial vehicle industry to transform towards green and efficient development.
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