At a time when pure electric vehicles have encountered market bottlenecks, have not exceeded half of the market share below people's expectations, and hybrid technology is blooming, the continuous upgrading and improvement of hybrid technology has become the focus of competition.
Therefore, even if hybrid technology originated very early, it is difficult to say which one is better, especially the plug-in hybrids that are commonly used today. It can be said that it is good to occupy the market early; There is a good time to be late, and you can learn the lessons of moving forward. For example, SAIC Motor launched a plug-in hybrid as early as 2017 and used it in Roewe models. But it was only a few days ago that it was really formed into a technology brand to be promoted.
Zu Yijie, vice president and chief engineer of SAIC
SAIC with its Roewe brand on May 10 released the DMH technology brand, objectively speaking, compared with a number of domestic car companies have been in the plug-in hybrid market, compared with the killing, Roewe's DMH technology is indeed a little late, SAIC uses a large space to explain the rigid needs of plug-in hybrids, and compared with the international new energy route, China's demand and suitability for plug-in hybrid models in the market environment, car demand and other aspects are very strong.
After BYD and other leading car companies have laid a large area in the plug-in hybrid market, SAIC Roewe's cognition of the plug-in hybrid market and the pace of its launch are not so much slow, but rather that they are in the "super fusion" of the King James is deliberate, and the plug-in hybrid technology is constantly improved to take a more efficient route before they begin to exert their strength, as mentioned earlier, in 2017, SAIC Roewe already has plug-in hybrid products.
Lu Yong, Deputy General Manager of SAIC Passenger Vehicle, Executive Vice President of SAIC Innovation Research and Development Institute, and Executive Deputy Director of Technology Center
So this time, SAIC Motor should have brought the super fusion hybrid concept to the market after repeated consideration and adequate preparations.
So why is it called "super-convergence"?
According to the speeches of several senior executives of SAIC Innovation Research and Development Institute, the reason why DMH super hybrid technology is called "super fusion" is that it has three major technical characteristics: modularization, integration and exclusivity.
In other words, this system is based on modular design and serial configuration, and can cover the driving needs and fuel consumption regulations of different users through a set of systems to match different hybrid routes such as PHEV/EREV/HEV. At the same time, the system has the industry's first "energy domain" global thermal management, powertrain brain PICU, engine + P1 motor coaxial structure and other leading technologies, with software algorithms as the core, matching hybrid special high-efficiency engine, gearbox, long-range battery and other special hardware, "software and hardware", to achieve super integration, to achieve the strongest performance and optimal indicators.
The development of hybrid technology, SAIC used the word "fusion", which can be associated with the "PHREV" released by Dongfeng Group, and it is also a kind of fusion, which can be pure electric, extended, and plugged-hybrid, which is to maximize the use of the advantages of these power modes to provide the best solution for vehicle driving and charging.
If we push it further, we see that pure electric and hybrid, as two completely different power modes, are produced with different models, which we call pure electric models and hybrid models; Later, more and more car companies tend to combine the two better, giving birth to the range extender. Although the range extender also requires the same engine as the hybrid, their respective advantages and disadvantages are obvious, especially for pure electric charging can not completely solve the problem of long-distance range, car companies have combined range extension and hybrid technology more cleverly. In this way, there are models that can be extended, pure electric, and plug-in hybrid.
For SAIC's "super fusion" concept, Professor Yao Chunde, deputy director of the "China Heart" Top Ten Engine Jury and Professor Yao Chunde of Tianjin University, said very bluntly that SAIC's DMH super hybrid is aimed at the current mainstream P1+P3 hybrid configuration, and innovatively improves the off-axis P1 motor to a coaxial structure, which greatly improves the transmission efficiency, optimizes NVH performance, and makes the whole system more efficient and the driving experience smoother and quieter.
This fusion combines the characteristics of gasoline and electric vehicles to maximize the efficiency of the engine, which requires a high level of hybrid-specific engines. At present, most of the hybrid engines of domestic OEMs can achieve thermal efficiency of more than 44%, SAIC believes that its thermal efficiency will soon exceed 46%, this value is actually we also saw when Dongfeng PHREV was released, Mach special hybrid engine thermal efficiency, Dongfeng expects that it will soon achieve 47% thermal efficiency.
Qiu Jie, vice president of SAIC Innovation Research and Development Institute and general manager of Jieneng Automobile Co., Ltd., also said that in the next three years, DMH super hybrid technology will carry out higher-dimensional performance improvement in five key areas: engine, gearbox, battery, motor, and energy control brain.
In addition to the engine thermal efficiency will break through to 46% and take the lead in China to meet the "Euro VII" emission standard, in terms of transmission technology, the target carbon dioxide emissions of the diesel-electric hybrid route will not exceed 95 g/km, and the plug-in hybrid and extended-range electric routes will adopt a new configuration of dual coaxial scheme; The energy control brain continues to be optimized, and the next-generation vehicle energy center concept is expected to be released in 2025.
On the day SAIC Motor released the "super fusion" DMH hybrid technology, the latest SUV equipped with this hybrid technology, the Roewe D5X DMH, was also unveiled on the same stage, in fact, the DMH super hybrid technology has been first installed on the "long-range super hybrid cloud car" Roewe D7 DMH.
The Roewe D7 DMH is a sedan with a test range of 1962km and a run to 2000km, while the average fuel consumption per 100km is only 2.8L, which also makes people very optimistic about the Roewe D5X DMH.