It took Guangqi Honda 22 years to achieve the transformation from 0 to 8 million vehicles. What will Guangqi Honda do after 8 million vehicles. At this year's Guangzhou Auto Show, Guangqi Honda gave the answer - value.
This year is the explosive year of Great Wall Technology. A few days ago, Shujin Media has interpreted the scalability, durability, modularity and other advantages of Great Wall’s latest tank platform. This article has caused a stir on multiple platforms. Extensively discussed, it can be seen that Great Wall's research and development in the field of technology has attracted the attention of domestic consumers. The day before the Guangzhou Auto Show, Great Wall released a new generation of self-developed powertrain. Now Great Wall has the capital to stand up in the three major areas of chassis, gearbox and engine.
Why do you say that? Let’s first use data to briefly talk about Great Wall’s new generation powertrain.
1: The world's first 9DCT gearbox rolled off the production line. This gearbox is the world's first 9-speed wet dual-clutch gearbox. Compared with the 7DCT gearbox, the overall efficiency is increased by 3.5%, the load-bearing torque is increased by 54%, and the weight is reduced. Nearly 10%, and the mounting length has also been shortened by nearly 10%, which means that Great Wall has reached the forefront of the market in the field of dual-clutch gearboxes.
2: The off-line code-named GW4N20 engine can reach a maximum power of 180kW and a maximum torque of 385N?m. At the same time, the thermal efficiency has reached 38.3, which means that the Great Wall engine has better power and fuel economy than the joint venture brand. Standing on the same echelon.
3: The three-in-one electric drive assembly is off the production line. This assembly combines the motor, controller, and reducer into one. The system is highly efficient and compact, and can be used in new energy vehicles of different levels. , which means that Great Wall has technical support for its future development in the field of pure electric vehicles.
Why did Great Wall develop the 9DCT gearbox?
According to common sense, key information is discussed at the forefront. The big news for Great Wall before the Guangzhou Auto Show is that the world's first 9-speed wet dual-clutch rolled off the assembly line.
Great Wall Tank Platform
China's automobile industry started late, but it had to establish its own core technology, and most independent brands focus on the development of dual-clutch gearboxes because of the AT gearbox patent Basically concentrated in the hands of two manufacturers, Aisin and ZF, there are technical barriers. The core components of the CVT gearbox, such as the transmission steel belt, also have technical barriers.
However, dual-clutch gearboxes appeared early and were applied late. Their principles and structures are basically the same. The underlying technology is not in the hands of a few companies. It is somewhat similar to the "open source" of the Android system. It is easier for independent brands to develop dual-clutch gearboxes. For example, Volkswagen also started in the field of dual-clutch gearboxes in order to circumvent patent barriers.
Why does Great Wall not purchase gearboxes from other brands, but chooses to spend huge sums of money to develop its own 9DCT gearbox?
In fact, most brands purchase gearboxes from other brands. The same is true for brands that have core technologies in hand. However, when building a car, you must master your own core technology. You must not have the idea of ????"making is worse than buying". You need to maintain your own technical competitiveness, and at the same time, you must beware of being choked by suppliers. , especially in the current international society, independent brands must pay special attention to this point.
What are the advantages of Great Wall’s 9DCT gearbox?
Understanding the above two issues, we can understand why Great Wall is developing its efforts in the field of dual-clutch gearboxes. In fact, currently dual-clutch gearboxes are mainly 7-speed, and 7-speed wet dual-clutch gearboxes are top products. For example, high-end models such as the Audi A6L/Q5L and Volkswagen Huian of the Volkswagen Group all use 7-speed wet dual-clutch gearboxes. box, and what Great Wall has developed this time is a 9-speed wet dual-clutch gearbox, which can also be simply understood as the strongest player in the field of dual-clutch gearboxes at the moment.
GW4N20 engine 9DCT transmission
Specifically, this 9DCT transmission uses built-in integrated TCU (automatic transmission control unit) technology. Compared with the overall efficiency of the 7DCT transmission It is increased by 3.5%, the load-bearing torque is increased by 54%, the weight is reduced by 10%, the carrying length is shortened by 10%, and the fuel consumption per 100 kilometers can be reduced by 7%. Although the improvement in these values ??does not seem to be large, it is actually worthy of praise that after such a long period of development in the gearbox field, it can still achieve such an improvement.
The meaning of these values ????is that Great Wall's 9DCT gearbox is smaller and does not take up too much space. Lower-level models can also be equipped with this gearbox, and high-level models can improve the vehicle's performance. inner space. In addition, the improvement of overall efficiency can make the power response more direct, and the fuel consumption per 100 kilometers can also be reduced. The load-carrying torque has increased by 54%, which means that it can be adapted to high-horsepower engines. For example, the 3.0T engine independently developed by Great Wall has its own gearbox for adaptation.
Autonomous gearboxes have more possibilities
GW4N20 engine 9HDCT gearbox
The independently developed gearbox and power system have another advantage, because They are all my own technology, and I need to be more comfortable in adjusting, upgrading, adapting, and installing... For example, Great Wall combined the 4N20 engine with the 9HDCT gearbox to create a hybrid system that can reduce fuel consumption by 70 kilometers per 100 kilometers compared with the 7DCT. In addition, it matched the P2 module based on the 9DCT transmission and placed the motor behind the engine and gearbox. Before, the peak power reached 120kW and the peak torque reached 330N·m.
The key point is that the engine, gearbox and other related control software of the above-mentioned powertrain are all independently developed by Great Wall, laying the foundation for the later matching and optimization of power, chassis and other units with automatic driving. , paving the way for higher-level autonomous driving.
Three-in-one motors are beneficial to the development of the Euler brand
Through Great Wall Euler's frequent launch of new cars this year and the integration of old products in naming, it can be seen that Great Wall will continue to make efforts to pure In the field of electric vehicles, the three-in-one electric drive assembly that is off the production line this time will improve the models under the Euler brand.
Three-in-one electric drive assembly
Because this assembly combines the motor, controller, and reducer into one, it is more compact than the previous assembly, and It has the advantages of low motor noise and high effective specific power. The power range is 35kW-200kW. The Euler brand's current production of small cars will further enhance its interior space, and the higher motor power will also enhance the driving pleasure of the model, and will also help the Euler brand launch higher-level models in the future.
Shujin Changyan:
It should be noted that these technologies are not just on paper, but have already been produced offline, with a planned annual production capacity of 2.5 million units. It will gradually meet with consumers at the end of this year and the beginning of next year. Great Wall's new generation powertrain has taken Great Wall one step further in core technology. Although the 9DCT gearbox has not been installed yet and has not been able to be tested, it is already at the forefront in terms of data.
This article comes from the author of Autohome Chejiahao and does not represent the views and positions of Autohome.