First of all, let's clarify a concept: what is DM?
Is DM a pair? Short for Mode (Dual Mode). DM dual-mode electric vehicle adopts electric vehicle system and hybrid power system. It is an advanced technology, which combines two kinds of hybrid control: generator and motor. It not only reduces fuel consumption and emissions, but also greatly improves power and handling performance. A variety of rechargeable and refuelable energy supplement methods are realized, and a real dual-power hybrid power system is realized. In fact, to put it another way, that's PHEV's new energy vehicle, a plug-in special charging hybrid vehicle.
What are the highlights of BYD's third-generation DM technology?
It can be roughly divided into four points: first, the brand-new BSG motor architecture can be directly driven by the engine to generate electricity. The front drive motor and the front axle are still connected and can be driven at any time, with less engine load, less noise and better overall noise control. Second, the brand-new rear axle drive motor brings stronger performance. The powerful rear axle drive motor has a maximum power of 180kw and a torque of 380 Nm. The gasoline engine and dual-motor three engines work at the same time, which can provide super performance of nearly 600 horsepower and 950 Nm. Therefore, the new generation of Tang DM only needs 4.5s (top version 4.3s) for 100km acceleration. Third, smarter electronic control management optimization is more economical and energy-saving. Using the economic interval of the engine to generate electricity can effectively balance the electricity and reduce the occurrence of power feeding in the case of urban congestion. Fourthly, the ride comfort is improved, which is also attributed to the brand-new BSG engine. When the hybrid is involved, BSG can directly pull the engine to the appropriate speed and then connect it. Low speed is an extension program, and there is no sense of frustration at all.
Tang DM hybrid system mainly has four working modes, one is the strongest mode, and three engines work at the same time, which is why it accelerates to break 100 in 4.3 seconds at the earliest; The second is the most economical pure electricity mode. The gasoline engine does not work and is driven by the front and rear double motors. At the same speed, the maximum cruising range of pure electricity is 100km (80km with low-grade cars), so there is no pressure on daily commuting; Third, the driving power generation mode, when the battery power is too low, the front motor no longer outputs power, but becomes a generator to charge the battery. At this time, the state of Tang DM is closer to a fuel vehicle; The fourth is idle power generation mode. When the engine is idling, the front motor will continue to charge the battery, improving the fuel economy in urban traffic jams.