Not only GAC Chuanqi, but also the booths of many independent brands have undergone great changes at the 2020 Beijing Auto Show. From the previous "vehicle display" to the current "technical area", it shows that the development of self-driving car technology has reached a new height.
More than a decade ago, China automobile brand gave people the impression that it was more like an assembly plant. Other people's technology was backward and the quality was poor, which left a bad impression on consumers. GAC Chuanqi reversed the image of independent car companies with "positive research and development", and then "positive research and development" led the development direction of independent brands.
At the 2020 Beijing Auto Show, Julang Power's new powertrain platform was released, demonstrating the achievements made by GAC Chuanqi on the road of technological transformation. As the head enterprise of its own automobile brand, GAC Chuanqi now puts forward the road of digital transformation, which involves many aspects, including emphasizing the transformation to a technology-based enterprise, which is also increasing the hard power of GAC Chuanqi on its own development road.
According to Che Shijun, GAC has invested more than 30 billion yuan in research and development. From June to June 2020 alone, the number of new patent applications of Guangzhou Automobile Group has reached 927. Not only that, Guangzhou Automobile Group's first internal incubation technology innovation company has also been registered.
When foreign automobile brands announced that their technology could make the maximum thermal efficiency of engines reach 40%, 465,438+0% or even 43%, I believe many people were not impressed and questioned the technology of autonomous engines: Can they catch up?
The emergence of Julang Power undoubtedly boosted the spirit of independent technological innovation and made new breakthroughs in the two major fields of engines and gearboxes. It can be said that the products under this platform have been injected with "black technology".
Julang Power Engine covers three platforms: 1.5L, 2.0L and DHE, all of which adopt GAC GCCS combustion control system technology. At present, the representative models of the three platforms are the third generation 1.5TGDI, the third generation 2.0TGDI and the fourth generation 2.0ATK engines. Among them, the thermal efficiency of the third generation engine exceeds 40%, the lifting power reaches 100kW/L, and the lifting torque reaches 200 nm/L. ..
As for the fourth generation 2.0ATK engine (special for hybrid power), a technical breakthrough has been achieved, with the highest thermal efficiency reaching 42. 1%! This is the representative of the highest thermal efficiency of the autonomous engine at present, even higher than the engines of Toyota and Honda.
Julang power engine can achieve high thermal efficiency, and one of the most important factors is the application of GAC GCCS combustion control system technology. This technology is the result of repeated experiments in the process of combustion system design, virtual visual simulation of in-cylinder process, prototype test of combustion system and reconstruction of combustion indicator diagram.
Application of GAC GCCS combustion control system
Taking the fourth generation 2.0ATK engine as an example, the Atkinson cycle and GAC GCCS combustion control system are combined to achieve an ultra-high compression ratio of 15.6, which means that the engine has better power performance.
Intelligent thermal management technology and engine low friction technology
In addition, the Julang power engine also uses an intelligent thermal management system to optimize the power loss caused by friction. In order to make the engine run in the best working condition, the internal hot spots of the engine are accurately adjusted through the application of intelligent thermal management system (high-power electronic water pump, thermal management module, cylinder head shunt water jacket).
In reducing the internal friction of the engine, advanced technologies such as low-friction lubricating oil, DLC (diamond-like carbon) coating process, electronically controlled fully variable oil pump and roller bearing are adopted. Both appeared, and the friction loss was reduced by 20%.
Low temperature exhaust gas recirculation technology
For turbocharged engines, GAC's "low temperature exhaust gas recirculation technology" realizes the recycling of low-energy pure exhaust gas after turbine and catalyst, and the most direct result is that it can achieve 5% fuel saving effect.
Julang power transmission currently covers three platforms: WDCT, AT and DHT. Equipped with the electro-hydraulic control system pioneered by GAC, it applies the latest technologies such as multi-objective pressure control, double pump time-sharing control and segmented flow linear control. Representative models include 7WDCT gearbox, 8AT gearbox and G-MC electromechanical coupling gearbox on hybrid vehicles.
It is worth noting that the sum transmission efficiency of 7WDCT transmission reaches 96%, and the shift response is as low as 0.2s, thus winning the title of "Top Ten Transmission in the World". As for the G-MC electromechanical coupling transmission, it can not only realize various working modes such as pure electric, extended range, hybrid power and braking energy recovery, but also intelligently optimize the combination according to the power demand, and the fuel saving rate is over 35%.
The subordinate models of Julang Power Technology brand have been applied to different types of cars, SUVs and MPVs produced by GAC Chuanqi.
The brand-new Chuanqi M8 at the 2020 Beijing Auto Show
According to Che Shijun, Chuanqi GA8, GS8, M8 and other flagship models are all equipped with the third-generation 390T engine under the 2.0L platform, namely the 2.0T engine. The third generation 390T engine can achieve maximum power 185kW and maximum torque of 390N? M, official data show that the cumulative sales of models equipped with this engine have exceeded 300,000 units.
The second generation Chuanqi GS4
Not only that, Chuanqi GS4, known as the dark horse of SUV, also completed the update of the second-generation model earlier. The new car is equipped with the third-generation 270T engine under the platform of 1.5L, namely 1.5T engine. The engine can achieve maximum power 124kW and maximum torque of 265? n？ M, strong power, comprehensive fuel consumption dropped significantly.
In the future, we will also see GAC Chuanqi's hybrid model with 2.0ATK+G-MC electromechanical coupling transmission, leading its own brand cars into the era of fuel consumption 4.
Of course, the further development of GAC Chuanqi engine not only consolidates its advantages in hard power, but also has far-reaching benefits for consumers. Under the blessing of GAC Chuanqi's "Julang" power, all new cars of GAC Chuanqi will achieve a leap.
GAC Chuanqi's third-generation engine is more powerful, less fuel consumption and more durable than the original series engines. The 2.0ATK+G-MC engine, which will be installed on the hybrid car of Guangzhou Automobile Chuanqi, has a thermal efficiency of 42. 1%, and has rapidly climbed to the second level in the world. The measured idle noise is as low as 57.6 decibels, and the quietness has been greatly improved compared with the previous models. A more intelligent control and management system can further improve the realm of vehicle integration.
Summary:
All of the above are the achievements of Guangzhou Automobile Chuanqi, which is based on the road of technological innovation of self-improvement, thus innovating vehicle models and rapidly enhancing its technological advantages and market competitiveness.
From the case of Guangzhou Automobile Chuanqi transforming into a technology enterprise and releasing Julang Power, it can be seen that the highest technical thermal efficiency of domestic engines is 42. 1%, which is the first shot for technological innovation of independent brands.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.