Why Doesn't BYD DM-i Have a Transmission?
1 Answers
Because BYD DM-i features plug-in operation capability, NVH levels comparable to electric vehicles, 2.0T-class 0-100 km/h acceleration performance, better fuel efficiency, quieter operation, and superior power. The DM-i Super Hybrid system uses a clutch to regulate power sources, keeping the engine and electric motor always operating within their highest efficiency ranges, eliminating the need for a transmission. Similar to how electric vehicles don't have traditional transmissions, when reaching certain speed ranges, the engine directly drives the wheels in parallel through the EHS hybrid system. The brilliance of the DM-i Super Hybrid system lies in its electric-dominant hybrid architecture, offering multiple advantages including fast acceleration, fuel efficiency, quietness, smoothness, and environmental friendliness. Even when running on battery depletion mode, it maintains low fuel consumption of just 3.8L/100km, with a combined range exceeding 1200 km when fully fueled and charged, effectively eliminating range anxiety and charging concerns associated with pure EVs. The BYD DM-i Super Hybrid system employs intelligent processing logic with four driving modes: pure electric, HEV series, HEV parallel, and engine direct drive. In pure EV mode, the engine doesn't engage, making the DM-i vehicle function entirely as an electric car. During HEV series, HEV parallel, and engine direct drive modes, while the engine participates, it only operates within its most efficient range. Combined with the engine's inherently high thermal efficiency and stable RPM during these modes, this results in remarkably low fuel consumption and noise levels.
