What does DMI mean in cars?

1 Answers
AubreyFitz
07/28/25 5:04pm
Automotive DMI is a super hybrid system developed by China's BYD Auto. The super hybrid system is applied to plug-in hybrid models, with the core concept being that the vehicle primarily relies on electricity with fuel as a supplement. It is equipped with a high-capacity battery and a high-power motor to enhance the vehicle's power performance while extending its driving range. Additional information: How DM-i works 1. The working principle of the DM-i super hybrid system is to fully avoid the disadvantages of the engine, keeping it operating in an efficient working environment at all times. 2. The disadvantage of the engine lies in its lower speed during startup or low-speed conditions. Under such conditions, due to insufficient fuel combustion, the engine tends to have high fuel consumption and low efficiency; its advantage, however, is efficient operation during medium to high-speed conditions. 3. Compared to the engine, the motor has a higher energy conversion efficiency, and BYD's motor speed can be freely adjusted between 0 and 16,000 rpm, eliminating the need for gearbox shifting operations. This significantly improves the efficiency of the power system while ensuring the vehicle operates more quietly and smoothly. 4. The DM-i super hybrid system leverages the advantage of the engine's efficient operation at medium to high speeds, allowing it to fully serve the more efficient motor. 5. In pure electric mode, vehicles equipped with the DM-i super hybrid system will be powered by a DM-i super hybrid dedicated power-type blade battery to supply the drive motor. In most hybrid modes, the engine will drive a high-power generator to supply power to the drive motor. When the vehicle enters the engine's optimal working state during medium to high-speed driving, the engine will also directly drive at the appropriate time, working in parallel with the drive motor to output power.
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