The mainstream Wei brands DHT, BYD DM-i, Changan iDD, Geely Lei Hi X and the newly released Chery Mars architecture are all super hybrid. How should I choose?
Wei brand DHT, the product of walking in the forefront of the times?
Friends who are familiar with Wei brand all know their DHT technology, which really has excellent quality in the field of mixing.
The so-called DHT technology is actually a series of technologies developed around plug-in hybrid vehicles, including gearbox, motor, battery, power coupling module, engine and many other patented technologies. Compared with the traditional extended-range simple series mode, it has more power transmission lines, can realize the series-parallel connection of gasoline engine and fuel engine, and has high transmission efficiency.
DHT hybrid technology may sound complicated, but the principle is simple. We all know that fuel engines are more expensive to drive in cities, and its dominant working range is mainly in the state of medium and high speed cruising, which can have lower fuel consumption. The motor is suitable for urban commuting, and high-speed driving is its weakness. In the operation of single gear gearbox, it has extremely high energy consumption. The model equipped with Wei DHT technology has found a delicate balance between the engine and the fuel engine. At low speed, the vehicle is driven by a motor, and at medium and high speed, the vehicle is switched to the direct drive mode of the fuel engine through a coupled two-speed gearbox, and the motor performs auxiliary output, so that the daily driving power is guaranteed and the fuel consumption is extremely low. I have to say, this is really a good idea.
What are the advantages of BYD DM-i?
As the earliest new energy automobile enterprise in China, BYD has three outstanding technologies. What is the working principle of its DM-i technology?
Although DM-i technology also needs the balance between motor and fuel engine, it is different from DHT technology of Wei brand. Most of the time, the engine and motor are connected in series, and only a few of them need direct drive intervention. The DM-i technology-specific high-efficiency motor saves most of the transmission mechanism, and always keeps the role of "charging treasure" in the high-efficiency operation interval. By constantly charging the battery, the high-power and high-efficiency motor keeps working.
To put it simply, DM-i technology uses fuel engine as generator most of the time, fully amplifying its advantages, using pure electric mode to ensure low energy consumption at low speed, and choosing direct drive mode at high speed to obtain more economical fuel consumption, which is theoretically more fuel-efficient than Wei brand DHT technology. However, the fuel engine always stays in an efficient working range, which brings low energy consumption, and at the same time, there is a certain loss when it runs for a long time with high load. Therefore, vehicles equipped with DM-i technology usually need routine maintenance every 5000km-7500km, which is likely to be a double-edged sword.
Changan iDD, what technology is it?
Chang 'an is also an old friend of our people. What are the characteristics of this new hybrid technology?
The original intention of developing hybrid technology is to make the engine and motor reach an efficient working range, and the number of paths in Changan iDD is the same. Different from other technologies, it arranges the motor between the engine and the gearbox, and the vehicle powertrain consists of a high-performance blue whale engine, a high-efficiency blue whale electric drive transmission, a super-capacity PHEV battery and an intelligent control system. The motor is equipped with three-way electric drive transmission, which can link the engine, gearbox and motor to provide diversified driving modes.
To put it simply, the vehicle is driven by pure electric at low speed, the kinetic energy is recovered to charge the battery, and it runs in medium and high speed fuel mode. The engine and the gearbox are directly coupled for power transmission, which drives the motor connected with the gearbox, thus charging the battery. When power is needed, the three-clutch gearbox can drive the engine and generator to run at the same time, thus obtaining abundant power. I have to say that Chang 'an iDD technology is also very distinctive, and the energy consumption and fuel consumption have also achieved double lows. Compared with BYD DM-i, it seems that it will not consume so much engine, but it seems to be more complicated in technology.
Geely Ray is a genius with Hi X. What capital does he have to challenge other hybrid technologies?
Geely, as the leader of our own brand, has also flourished in the automobile market in recent years. As the latest hi-x hybrid technology in the family, is it possible to shake the status of other car companies?
Lei Hi X is not only a hybrid system, but also represents a hybrid platform. It consists of an engine module, a transmission module and an electric drive module. It is equipped with 1.5TD and 2.0TD special hybrid three-cylinder engines, 1 and 3-speed special transmissions, and 400V and 800V pure electric structures. In fact, the principle is similar to other technologies, and it can intelligently switch series mode, energy recovery mode, pure electric mode and parallel mode. Coupled with the extremely low fuel consumption of the three-cylinder engine, the comprehensive performance is quite brilliant. When the series is switched to 1 speed transmission, the energy consumption is low. When the vehicle is in parallel mode, when switching to the 3-speed transmission, it can enter the low-speed parallel direct drive mode when the vehicle speed is above 20km/h, which can further reduce fuel consumption.
In theory, Lei's Hi X hybrid system is comparable to other systems, and even exceeds the energy consumption performance of other systems, but it cannot solve the natural jitter problem of three-cylinder engine. Even though many technologies are used for neutralization, the overall comfort and NVH are still not satisfactory.
Chery Mars architecture is super hybrid, can it represent the future hybrid technology?
With the release of Chery's latest Mars architecture-super hybrid platform, the first model Tiggo 9 will also be officially unveiled. What are the characteristics of this hybrid architecture?
Mars architecture-super hybrid platform is mainly composed of vehicle architecture and powertrain. The architecture is developed with the idea of hybrid special module, which makes some structures of hybrid electric vehicles and fuel vehicles compatible. The same hybrid production line can produce two kinds of powertrain vehicles, achieving twice the result with half the effort. At the same time, it can also cover a variety of wheelbase, track and different types of vehicles, paving the way for future new products in advance.
In the powertrain, a brand-new hybrid technology and hybrid special engine will be adopted, and the optimized Kunpeng hybrid technology will continue to serve. The thermal efficiency of the special hybrid engine will exceed 44%, further reducing fuel consumption. The three-speed DHT used in Kunpeng hybrid technology will also optimize the coupling efficiency in different scenarios through a series of adjustments, solve many problems such as frustration and complex driving mode, and enhance the user's driving experience. It is reported that the architecture will also launch 1 DHT low-end models, adopting a series-parallel structure similar to BYD DM-i to compete with other competitors in the low-end market.
Write at the end:
On the whole, each of the five hybrid technologies has its own advantages. The Weibai DHT is relatively stable and comprehensive. BYD DM-i may need to consider the cost of daily maintenance, while the structure of Changan iDD seems to be somewhat complicated, while Lei Hi X has the problem of durability of three-cylinder engine. The super hybrid of Mars architecture needs market feedback. As for how to choose, you can safely choose Wei brand DHT and BYD DM-I. The energy consumption demand can be selected from Lei Shen Qing Hi X and Changan iDD, and you can also expect a wave of Mars architecture super hybrid landing, but in the end, you have to proceed from the user's own needs.
This article comes from the author's first car number, and the copyright belongs to the author. Please contact the author in any form. The content only represents the author's point of view and has nothing to do with the car reform.