When it comes to hybrid systems, many people think of either Toyota THS or Honda's iMMD. However, with the continuous development of my country's new energy industry, BYD DM -i super hybrid system has gradually been recognized by the market. Let’s take a look at the principles of BYD DMi super hybrid technology.
1. Pure electric mode
When the vehicle has sufficient power and is traveling slowly, the engine and generator of the DM-i system stop working, and the vehicle is completely driven by the electric motor. At this time, BYD DM-i is like a pure electric car. When the kinetic energy is recovered, the wheels can directly drive the electric motor to charge the battery, thereby increasing the vehicle's pure electric cruising range.
2. Hybrid mode
When the power is lower than the limit value and the driving speed is below 60km/h, the vehicle's engine starts to run and remains in the most efficient range to continuously provide power. The generator generates electricity, and part of the power is supplied to the electric motor to drive the vehicle, and the other part of the power is used to charge the battery. When the battery power reaches the ideal value, the engine stops working, and the battery supplies power to the electric motor to drive the vehicle.
3. High-speed mode
When the battery is lower than the limit value and the driving speed is above 60km/h, the vehicle enters the engine direct drive state, in which the direct drive clutch is hard-connected to the engine. , when the vehicle is directly driven through the single-speed reducer, the engine's working efficiency can reach its highest level at this time. When the vehicle needs to accelerate quickly to overtake, the hard connection of the engine is automatically disconnected. At this time, the engine will supply power to the electric motor from the battery at the same time to ensure that the vehicle obtains maximum driving force.
Friends who have a certain understanding of hybrid technology will find that the working principles of BYD DM-i and Honda iMMD hybrid technologies are very similar. In fact, neither system uses any innovative technology. The reason why BYD DM-i is favored by consumers is that it has the advantages of large motor power, high engine thermal efficiency, large battery capacity, and fast charging speed.
With the support of the excellent EHS electric hybrid system, the BYD DM-i model has excellent fuel economy performance. When the vehicle is in pure electric mode, the fuel consumption approaches 0L/100km, even if it is running low on electricity. Fuel consumption does not exceed 4L/100km. In addition, the DM-i model has a pure electric maximum cruising range of more than 100KM, and it also only has a maximum DC fast charge of 6.6KW. Its product strength is enough to crush a number of joint venture hybrid models.
Is BYD’s DMi technology reliable?
Relatively speaking, it is relatively reliable. BYD launched the first generation of hybrid technology as early as 2008. After more than ten years of development, the DM-i super hybrid system has now developed to the fourth generation. In the current generation, BYD has mastered the mature and advanced research and development capabilities of DM-i hybrid system. Vehicles are generally not prone to problems under normal maintenance.
At present, BYD DM-i models have a large number of users in China. However, according to third-party car failure complaint platforms and related car enthusiast forums, it can be found that the number of complaints about DM-i model failures is not Not much, so in general, BYD's DM-i technology is very reliable, and you don't have to worry too much about the quality of this hybrid system.