How does a mild hybrid start?

The starting process of the Mild Hybrid system mainly relies on the collaborative work of the Integrated Starter Generator (ISG) and the traditional internal combustion engine. When the vehicle is ready to start, the ISG uses electrical energy from the 48V lithium-ion battery to quickly assist the engine in rotation, significantly reducing reliance on the traditional starter motor while mitigating turbo lag, making the start smoother and more efficient. During deceleration or braking, the system recovers kinetic energy through regenerative braking and stores it in the battery for subsequent acceleration or to assist with start-stop functions. However, mild hybrids cannot operate solely on electric power; their motors only serve as auxiliary units for the internal combustion engine. Additionally, the Electronic Control Unit (ECU) coordinates energy distribution in real-time to ensure the system responds to driving demands, while the clutch or coupler design allows the ISG to disengage from the engine when necessary to further improve energy efficiency. This technology does not require changes to the user's driving habits but can reduce fuel consumption and emissions by approximately 10%-15%, making it a practical solution for the transition from traditional fuel vehicles to electrification.