Abstract:

A 48 V hybrid system control model which included the core functions such as start-stop, fast engine start, torque assistant and braking energy recovery was built to investigate the technical routine and method of fuel consumption reduction for a multi-purpose vehicle (MPV). The hybrid system control model was test
by hardware-in-the-loop (HIL), and the control strategy and data were validated and optimized at real vehicle. The results show that the 48 V hybrid system control model can decrease the fuel consumption by 14% under the New European Driving Cycle (NEDC) with a slight emission deterioration comparing with conventional configuration vehicles.

Key words: mild hybrid vehicle, control system, control strategy, emission, fuel consumption