混合动力汽车燃油经济性研究

应用能量分析的方法,以轿车和载货汽车为例,研究了混合动力汽车(HEV)与传统燃油发动机汽车的燃油经济性。发现按原车后备功率最大值时所对应的车速所需的驱动功率作为HEV燃油发动机功率的选择依据,节油效果最显著。当燃油驱动功率和电动驱动功率各占50%左右时,HEV轿车的经济性评价指标为原车的22.8%,HEV货车的经济性评价指标为原车的79.2%,同时又能保证动力性基本不变。结果表明,用混合动力可以有效地降低汽车的100km燃料消耗量,轿车的燃料消耗降低幅度大于货车。

Fuel Economy for Hybrid Electric Vehicles

This paper studied the fuel economy of conventional vehicle and hybrid electric vehicle (HEV) by the method of energy analyzing for car and truck. It is pointed that the effect of fuel reduction is very significant if the power that drive vehicle at speed in the point of maximum reserve-power select to be the power for HEV fuel engine unit. When the power of the fuel engine unit and electric drive unit are all about half gross power, the equivalent fuel consumptions 22.8 % of original for car, 79.2 % for truck. The results indicate that using hybrid power can effectively reduce the equivalent fuel consumption of vehicles, and the amount of fuel reduction for car is more than that for truck.