As global vehicle emission standards become increasingly stringent, many car companies have begun to shift from traditional fuel vehicles to the development of new energy models. In this process, although electrification is the ultimate destination, hybrid vehicles Power technology is the best transitional solution on this road. Compared with ordinary fuel vehicles, hybrid vehicles have huge advantages in terms of power performance, environmental protection standards, economy and energy conservation and emission reduction. It has now become a technology that many car companies are competing to develop. Important direction, today the editor will take stock of the mainstream hybrid technologies in the current automobile market with everyone, and see which one has the best technology.
First of all, let’s take a look at the two most mainstream types of hybrid power systems currently in the automobile market, namely plug-in hybrid and gasoline-electric hybrid. Plug-in hybrid mainly refers to vehicles equipped with When using an external power source, the car owner needs to charge the vehicle with an external power source. The gasoline-electric hybrid mainly adds an electric motor as an auxiliary power to the engine, so the power is often more powerful when accelerating. Next, let’s take a look at Honda, the Japanese hybrid representative.
Among the entire Japanese brands, Toyota is the absolute pioneer, which has also resulted in a large number of patents belonging to Toyota. In order to break through this limitation, Honda decided to start from its own advantages and conduct research and development in the engine field, and finally realized For overtaking in corners, it launched its own i-MMD hybrid system.
This hybrid system mainly consists of Atkinson cycle engine, E-CVT, intelligent power unit IPU and power control unit PCU. So what are the advantages of this powertrain? Let’s take the hybrid version of the Honda Accord as an example. The powertrain it is equipped with has a maximum power of 107kW and a maximum torque of 175Nm. Compared with the ordinary version, its fuel consumption performance is very good, and its power output is also excellent. , the officially announced 0-100 acceleration time is about 8 seconds, which is faster than a 2.4L ordinary fuel vehicle. However, although there are many advantages, the disadvantages are also more obvious. The torque of 175 Nm is a bit too low for such a car. At the same time, it is obvious that the efficiency of this system is a bit low at low speeds.
In addition to the i-MMD system, Honda has also designed different systems for its models with different positionings, such as the hybrid version of the Fit. Since the Fit model is positioned for home use and does not require much power, Therefore, Honda designed the i-DCD hybrid system, which is mainly used in small cars and consists of a single motor. For some mid-sized cars, Honda is equipped with an i-MMD system, which is composed of dual motors. In addition to the above two hybrid systems, Honda has also equipped its high-end models with the more powerful SH-AWD. This hybrid system is mainly installed on some of its large cars or sports cars. It can be said that this system represents Honda's The highest technology, consisting of three motors, the representative model is Acura NSX.
In general, Honda's hybrid system is mainly based on electricity and supplemented by oil. Therefore, the main advantages focus on fuel consumption performance, but the disadvantage of low torque at low speeds is also obvious.
After looking at the representative of Japan, let’s take a look at BYD, the representative of domestic hybrid technology. As the main promoter of plug-in hybrid in China, as early as 2009, it launched the first-generation dual-hybrid vehicle. F3DM with dual-mode technology, and in 2013, with the blessing of the second-generation dual-mode technology, the acceleration time of BYD's models increased to less than 5 seconds, and the fuel consumption was also reduced to 2L. With the continuous iteration and progress of technology, , now BYD has launched the third generation of dual-mode technology, referred to as DM3. This new hybrid system has reached new heights in terms of power architecture and performance.
This third-generation DM3 hybrid technology is mainly optimized from three aspects: engine, electric motor and hybrid transmission to improve vehicle performance. Compared with Honda's hybrid system, BYD uses ECM control The strategy and cooling system optimization allow the vehicle to increase torque at low speeds, which has obvious advantages in vehicle responsiveness and acceleration. Currently, BYD's single motor can achieve a maximum power of 180kw and a maximum torque of 380 Nm. From the parameters It looks quite powerful.
In recent years, BYD has relied on this latest hybrid system to make its models popular. For example, the new generation Tang DM launched in June 2018, with its 0-100 The time of only 4.3 seconds instantly became the talk of domestic brands. The new Qin Pro DM is also equipped with the latest DM3 system, with equally excellent acceleration results
The above is a simple comparison between Honda and BYD. From a performance perspective, the editor personally prefers BYD. DM3 system, this plug-in hybrid shows extremely high quality in terms of power performance and fuel consumption. Although Honda's hybrid system is equally excellent, it is lacking in power. However, for plug-in hybrid For BYD, the demand for charging scenarios is relatively high, which may be its only weakness.
This article comes from the author of Autohome Chejiahao and does not represent the views and positions of Autohome.