基于最小瞬时等效燃油消耗的液压混合动力车辆能量管理策略  

Energy Management Strategy of Hydraulic Hybrid Vehicle Based on Instantaneous Equivalent Fuel Consumption Minimization

作　　者：李翔晟[1] 陈斗[2] 周永军[1] 

机构地区：[1]中南林业科技大学交通运输与物流学院,湖南长沙410004 [2]湖南铁路科技职业技术学院,湖南株洲412000

出　　处：《公路交通科技》2012年第12期148-152,158,共6页Journal of Highway and Transportation Research and Development

基　　金：湖南省教育厅基金项目(09C1023)

摘　　要：为提高混合动力车辆的燃油经济性和降低尾气排放,根据混合动力车辆2个或2个以上能量流之间的功率分流分配和能量利用情况,提出了最小瞬时等效燃油消耗量策略。通过分析串联式液压混合动力传动能量流关系,以储能元件蓄能器的虚拟等效燃油消耗为准则,建立了液压混合动力车辆最小瞬时等效燃油消耗模型。对液压混合动力车辆能量管理进行了研究,并以某型公共汽车参数为例,运用计算机软件通过城市循环工况第1部分和公路循环工况对使用该策略的液压混合动力车辆燃油经济性进行了仿真计算。仿真结果表明:采用最小瞬时等效燃油消耗策略的液压混合动力车辆的燃油经济性改善率接近30%;采用最小瞬时等效燃油消耗策略在提高车辆节能效果上具有较明显的优势。In order to improve the fuel economy and reduce the emission of hybrid vehicle, according to the power flow distribution and energy utilization of two or more energy flows of hybrid vehicle, the strategy of instantaneous equivalent fuel consumption minimization was put forward. Based on analyzing the relationship of serial hydraulic hybrid power transmission energy flows, taking the virtual equivalent fuel consumption of the energy storage element accumulator as the criterion, the model of transient equivalent fuel consumption minimization of hydraulic hybrid vehicle was established. The energy management of hydraulic hybrid vehicle was discussed. Taking the parameters of a type of bus as an example, the fuel economy of the hydraulic hybrid vehicle using the presented strategy under the first portion of the urban driving cycle and the road driving cycle was simulated by computer software. The simulation results show that （ 1 ） the fuel economy improvement rate of the hydraulic hybrid vehicle using the presented strategy is about 30% ; （2） by means of the strategy of minimum instantaneous equivalent fuel consumption in improving energy-saving effect of vehicle has obvious advantage.

关 键 词：汽车工程 能量管理 最小瞬时等效燃油消耗策略 液压混合动力车辆 优化 燃油经济性 

分 类 号：U469.79[机械工程—车辆工程]