First of all, let's take a look at the two most mainstream hybrid systems in the automobile market, plug-in hybrid and oil-electric hybrid. Plug-in hybrid power mainly means that the vehicle is equipped with an external power supply, and the owner needs to use the external power supply to charge the vehicle when using it, while the hybrid power of oil and electricity mainly adds an electric motor as the auxiliary power of the engine, so the power is often stronger when accelerating. Next, let's take a look at Honda, the representative of Japanese hybrid.
In the whole Japanese brand, Toyota is the absolute pioneer, which also leads to a large number of patents belonging to Toyota. In order to break through this limitation, Honda decided to proceed from its own advantages and conduct research and development in the engine field, and finally achieved overtaking in corners and launched its own i-MMD hybrid system.
This hybrid power system is mainly composed of Atkinson cycle engine, E-CVT, intelligent power unit IPU and power control unit PCU. What are the advantages of this powertrain? Let's take the Honda Accord hybrid version as an example. The maximum power and torque of its powertrain are 107kw and 175Nm, respectively. Compared with the regular version, it has excellent fuel consumption and excellent power output. The official 0-65,438+000 accelerates for about 8 seconds, which is faster than the 2.4L ordinary fuel vehicle. However, although there are many advantages, the disadvantages are obvious. The torque of 175 Nm is a little too low for such a car, and the efficiency of this system is obviously low at low speed.
In addition to the i-MMD system, Honda also designed different systems for its different positioning models, such as the hybrid Fit. Because the Fit model is oriented towards home, and there is little demand for power, Honda has designed an i-DCD hybrid system, which is mainly used in small cars and consists of a single motor. For some medium-sized cars, Honda is equipped with i-MMD system, which consists of two motors. In addition to the above two hybrid systems, Honda has also equipped its high-end models with more powerful SH-AWD, which is mainly installed on some of its large cars or sports cars. It can be said that this system represents Honda's highest technology and consists of three motors. The representative model is Acura NSX.
Generally speaking, Honda's hybrid system is mainly based on electricity, supplemented by oil, so the main advantage is concentrated on fuel consumption performance, but the disadvantage of low-speed torque is also obvious.
After reading the Japanese representative, let's take a look at BYD, the representative of domestic hybrid technology. As the main promoter of plug-in hybrid in China, the first generation of dual-mode technology F3DM was introduced as early as 2009, and the second generation of dual-mode technology was added in 20 13, which made BYD's vehicle acceleration time increase to less than 5 seconds and fuel consumption reduced to 2L. With the continuous iteration and progress of technology, BYD has now launched the third generation dual-mode technology, referred to as DM3. This brand-new hybrid system has reached a new height in power architecture and performance.
This third-generation DM3 hybrid technology is mainly optimized from three aspects: engine, motor and hybrid transmission, so as to improve the performance of the vehicle. Compared with Honda's hybrid system, BYD adopts ECM control strategy and cooling system optimization to increase the torque of the vehicle at low speed, which has obvious advantages in vehicle responsiveness and acceleration. At present, the maximum power of BYD single motor can reach 180kw and the maximum torque is 380 Nm, which is quite powerful in terms of parameters.
In recent years, BYD has made its models flourish with this latest hybrid system. For example, the new generation of Tang DM, which went on the market in June of 20 18, achieved only 4.3 seconds in 0- 100, which became a beautiful talk of domestic brands. And the new Qin pro? DM is also equipped with the latest DM3 system, and its acceleration performance is equally excellent.
The above is a simple comparison between Honda and BYD. In terms of performance, Bian Xiao personally prefers BYD's DM3 system. This plug-in hybrid vehicle has shown extremely high quality in power performance and fuel consumption. Although Honda's hybrid system is equally excellent, it lacks power, but for BYD, the demand for charging scenes is high, which may be its only weakness.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.