对48 V系统能量管理的应用效能进行了分析，包括不同驾驶模式和驾驶循环下的燃油经济性表现，重点分析了换挡策略、发动机起停策略、起步和加速助力策略、制动能量回收等能量管理应用策略。结果表明，Sport模式的微混功能被弱化，驾驶感受同传统动力车辆，相比Eco模式和Normal模式，100 km燃油消耗量偏高1 L，体现了不同驾驶员模型下48 V系统的能量管理应用的权重系数对燃油经济性的影响；同时，在完整的法规循环工况内，SOC实现了动态平衡，但冷机起动时，48 V系统的电池电量SOC下降较明显，循环工况的起始电量差异较大，表明车辆热管理的初始状态温度对能量管理的应用效能影响较大。

The application efficiency of 48 V system was analyzed, including the fuel economy under different driving modes and driving cycles. The analysis focused on shift strategy, engine start-stop strategy, start and acceleration booster strategy, braking energy recovery and other energy management strategies. The results show that the mild hybrid function weakens in sport mode so that the driving experience is the same as that of traditional powertrain vehicle. In addition, the mild hybrid has 1 L/100 km higher fuel consumption rate than eco and normal modes. This exactly explains the influence of weight factor set by energy management application strategy of 48 V system on fuel economy at different modes. The battery SOC achieves dynamic balance in a complete legislation cycle, but decrease rapidly during the cold start. The fact that the initial power difference of cycle condition is large indicates that the initial state temperature of vehicle thermal management has a greater impact on the application efficiency of energy management.