计及催化器转化效率的插电式混合动力汽车实时控制策略

发布时间：2018-04-14 00:02

本文选题：汽车工程 + 插电式混合动力汽车　；参考：《中国公路学报》2016年08期

【摘要】：为了提高插电式混合动力汽车催化器的转化效率,提出了催化器温度偏离其适宜温度区间时采用附加代价函数实现温度补偿。在此基础上,以发动机燃油消耗和催化器温度偏离适宜温度区间的附加代价为目标函数,依据庞特里亚金极小值原理建立了Hamilton函数,对目标泛函进行求解,获得了计及催化器转化效率的实时控制策略,并将该实时控制策略与未计及催化器转化效率的实时控制策略进行了比较。结果表明:相比于未计及催化器转化效率的实时控制策略,计及催化器转化效率实时控制策略的油耗增加了2.2%,但HC排放、CO排放和NOx排放分别下降了17.9%、25.9%和24.5%,即计及催化器转化效率的实时控制策略在燃油经济性损失不大的情况下可大幅度改善车辆的排放性能。
[Abstract]:In order to improve the conversion efficiency of plug-in hybrid vehicle catalytic converters, an additional cost function is proposed for temperature compensation when the catalyst temperature deviates from its appropriate temperature range.On this basis, taking the additional cost of engine fuel consumption and catalyst temperature deviating from the appropriate temperature range as the objective function, the Hamilton function is established according to the Pontreian gold minimum principle, and the target functional is solved.A real-time control strategy considering the conversion efficiency of catalytic converters is obtained and compared with the real-time control strategy which does not take into account the conversion efficiency of catalytic converters.The results show that compared with the real-time control strategy without considering the conversion efficiency of catalytic converters,Taking into account the conversion efficiency of catalytic converters, the fuel consumption of real-time control strategy increased 2.2, but HC emissions and NOx emissions decreased by 17.925. 9% and 24. 5% respectively, that is, the real time control strategy taking into account the conversion efficiency of catalytic converters has little loss in fuel economy.The emission performance of the vehicle can be greatly improved under the condition.
【作者单位】：重庆大学机械传动国家重点实验室;南昌工程学院江西省精密驱动与控制重点实验室;重庆长安新能源汽车有限公司;
【基金】：国家高技术研究发展计划(“八六三”计划)项目(2013BAG12B01) 国家自然科学基金项目(51305468)
【分类号】：U469.7

【参考文献】