"The new energy track, as General Secretary Xi said, 'the world is big enough to accommodate the common development of China and the United States'. The new energy track is large enough to accommodate many Chinese companies to join forces, technology PK Tesla, and the market to do it together. Recently, in an exclusive interview session with the "Super Convergence is Super Hybrid" DMH Technology Brand Conference, Lu Yong, executive vice president of SAIC Innovation and R&D Institute, said.
Lu Yong, Executive Vice President of SAIC Innovation and R&D Institute
Qiu Jie, vice president and deputy chief engineer of SAIC Innovation Research and Development Institute
The Roewe DMH technology brand was unveiled on the China Brand Day, bringing users a new choice of "great beauty" life, and also demonstrating the strongest strength of China's hybrid and letting the world see the power of China. In the interview session after the event, Lu Yong, Executive Vice President of SAIC Innovation R&D Institute, and Qiu Jie, Vice President and Deputy Chief Engineer of SAIC Innovation R&D Institute, shared more information about the current new energy vehicle market and DMH super hybrid technology.
Why is the Roewe D5X DMH leading in all aspects?
Roewe D5X DMH is equipped with DMH super hybrid technology, in the process of product establishment, development and promotion, the Roewe brand has invested a lot of costs, especially the cost into many places that users can't see, which comes from adhering to the purpose of doing a good job in quality, making a high-quality, high-performance, and high-safety car that users need.
First of all, in terms of power, the Roewe D5X DMH adopts a 1.5T hybrid special engine, which provides higher power attributes, better climbing ability, passability, etc. At the same time, the 1.5T Roewe D5X DMH can achieve an acceleration time of 100 km/h in 6.9 seconds and a top speed of 200km/h. The Roewe D5X DMH is also equipped with a 21.4-degree battery pack with the largest capacity in its class, achieving a pure electric range of 135 kilometers, and the model will be named 135 Technology Edition and 135 Flagship Edition. It is also equipped with 6kW external discharge, which can meet outdoor travel, wild camping and other scenarios, which is also the largest external discharge in the same level, which can meet more electrical needs.
It is worth mentioning that although the DMH super hybrid system adopts the P1+P3 hybrid configuration, it innovatively improves the off-axis P1 motor to a coaxial structure, which greatly improves the transmission efficiency and optimizes the NVH performance, making the whole system more efficient and the driving experience smoother and quieter.
In terms of safety, Roewe D5X DMH has also made great efforts, with the proportion of high-strength steel used in the whole vehicle reaching 79% and the proportion of ultra-high-strength steel reaching 44%. At the same time, the side air curtain is 1.2 times that of competing products, and can maintain 60% pressure after 6 seconds of impact, which can provide users with the greatest safety protection ability at the most critical moment.
In terms of quality materials, the Roewe D5X DMH is made of suede material in places within reach, presenting users with a warm and elegant riding experience. At the same time, the Roewe D5X DMH also provides the most comfortable seat in its class, including the length of the seat cushion and the thickness of the sponge filling. In terms of intelligent driving and intelligent cabin, the Roewe D5X DMH provides a L2 intelligent driving system on the 135 technology version. In terms of intelligent cabins, the Roewe D5X DMH supports the voice interaction function of one language and ten meanings.
Lu Yong said, "Chinese users are very concerned about car NVH, and when we designed and developed this car, we had relatively high requirements in this regard. When you sit in the car, close the doors, and roll up the glass, you can feel the isolation from the outside world, and the voice of the people outside will not be so clear, and this sense of isolation is the effect of our NVH pursuit. "DMH's pursuit is to create an all-round quiet driving experience comparable to pure electric vehicles, whether it is the engine intervention or the continuous engagement of gears, it is committed to achieving a truly "senseless" experience.
In Roewe's view, some cars are quite different from new cars after two or three years of use. Roewe has invested a lot of energy in long-term reliability and consistency, and has higher requirements for quality, NVH, long-term durability and attenuation. It is worth mentioning that Roewe is very rigorous about the performance of the car, and pursues complete truth, which is what you see is what you get for users. For example, in terms of range, the Roewe D5X DMH announced that the vehicle has a comprehensive range of 1,300 kilometers, but in actual driving, it has run more than 1,600 kilometers.
Super fusion is super hybrid
From this DMH technology brand launch event, we can see that SAIC Motor has a leading strength in terms of technical capabilities. Lu Yong said, "A few years ago, BMW CEOs or Akio Toyoda would often give a speech when they came to Tsinghua University, mainly to students, but they basically left after the lecture, in order to establish their own brand image among young students. However, in the era of new energy, in addition to talking, they also talked about cooperation with Chinese enterprises and universities, and their figure was obviously put down on this track. On the new energy track, SAIC and BYD have given full play to their respective advantages and taken advantage of this opportunity to truly build China's automobile industry. I was born in the best era, from technology introduction, joint venture learning to independent innovation, it is indeed a stage to strive for surpassing on the new energy track. As Lu Yong said, on the current new energy track, not only Chinese companies and foreign companies are following, but also unswervingly moving in this direction.
In fact, as early as 2010, SAIC Motor made a forward-looking layout of plug-in hybrid technology and continued to cultivate in this field. In 2017, SAIC's self-developed first-generation EDU hybrid technology won the second prize of the National Science and Technology Progress Award, which was not only the only award-winning automotive project that year, but also the first time that new energy technology won a national science and technology award. After long-term technology accumulation and market verification, the DMH super hybrid technology released at this conference has been comprehensively upgraded in terms of integration and intelligence, which is the result of SAIC Roewe's ten years of sharpening a sword, and it is also a plug-in hybrid route with more long-term value. As Lu Yong said, "An excellent hybrid system needs to solve the challenges of hardware, software and integration at the same time. The DMH super hybrid system has found a solution in the above three areas at the same time and achieved a major breakthrough. ”
DMH super hybrid technology has three characteristics: modularization, integration and exclusivity. The system can match different hybrid routes such as PHEV/EREV/HEV, and cover the driving needs and fuel consumption regulations of different users around the world, laying the foundation for DMH super hybrid technology to go overseas. At the same time, the system also holds a number of leading technologies such as the industry's first "energy domain" global thermal management, powertrain brain PICU, engine + P1 motor coaxial structure, etc., and takes software algorithms as the core, matching special high-efficiency engines, gearboxes, long-range batteries and other special hardware for hybrids, so as to achieve super integration and achieve both power and economy.
For example, in terms of thermal efficiency of hybrid-specific engines, DMH super hybrid technology has reached the industry-leading level. SAIC not only undertook independent development, but also undertook national scientific and technological tasks. Among the projects supervised by the 14th Five-Year Plan of the People's Republic of China, the only project on thermal efficiency of automobile brands is done by SAIC, and the thermal efficiency target of this project is greater than 45%. Previously, under the on-site supervision of the national certification body, SAIC Motor completed the vehicle test and certification, and the thermal efficiency reached more than 46%.
At the same time, SAIC's current thermal efficiency level is also in the first echelon in the world, Qiu Jie, vice president and deputy chief engineer of SAIC Innovation Research and Development Institute, said, "The answer to the question of going overseas is relatively simple, because the facts have proved everything. The new MG3 hybrid for the EP2 and ES3 has been announced in Europe. The target value is 100 g, and the measured value is 98.12 g. In terms of thermal efficiency itself, the reality is most clearly reflected in the CO2 data, so I think it is quite clear what the situation is in the competition between overseas and us. From the perspective of echelon, we are currently close to Japan and South Korea, and they are all in the area below 100g. ”
In addition, on the issue of the difference between the new energy market in different regions, Lu Yong believes that "Europe is generally a traditional automobile power, and Europeans pay more attention to the requirements for the essence of automobiles." I have always said eight words: safety, comfort, energy saving, environmental protection, regardless of the people or laws and regulations basically revolve around these eight words, reflecting the essential attributes of automotive technology. ”
Gasoline vehicles are closely related to emissions, and the more fuel-efficient they are, the better their emissions, so in Europe, especially in the German market, more people will choose diesel and pure electric models. However, pure electric models currently have problems with range and energy replenishment infrastructure. From the perspective of technical routes and local industrial advantages, it is difficult to give up the stronger the tradition, so European car companies do not take the hybrid route more. This is also the reason why Chinese car companies can reverse export. In addition, Chinese car companies have done a high job in thermal efficiency and all aspects of efficiency in the industry, so they have more advantages in the competition. In SAIC's view, as long as the products that meet the requirements of safety, comfort, energy saving and environmental protection must meet the needs of the market, they will be favored by consumers, and there will be a corresponding market.
In the next three years, the DMH super hybrid technology brand will make greater performance improvements in five key areas: engine, transmission, battery, motor, and energy control brain. For example, the thermal efficiency of the engine 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 CO2 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. Relying on the DMH super hybrid technology brand, Roewe will also gather superior resources from all parties to accelerate the creation of the "first camp of plug-in hybrid", from China to the world, and provide new plug-in hybrid options for global users.
Write at the end
As SAIC's new plug-in hybrid technology, the DMH super hybrid system released this time adopts the mainstream hybrid structure, which not only has excellent endurance, but also has no inferior power performance. Such a comprehensive strength is inseparable from SAIC's accumulation of more than ten years in the field of hybrid vehicles. In the future, SAIC will accelerate the creation of the "first camp of plug-in hybrids" based on the DMH super hybrid technology brand.