混合动力客车与传统客车排放测试研究

利用车载测试系统对混合动力客车及传统客车进行了整车排放测试,分析了重型混合动力客车在典型工况下及不同工作模式下的排放特征.研究结果表明.怠速工况及加速工况下混合动力客车的排放贡献率和油耗贡献率均低于传统客车;匀速工况下混合动力客车排放贡献率和油耗贡献率与传统客车基本相同;混合动力客车在低速使用串联驱动及在减速时将喷油量控制到最小可显著减少燃油消耗量及降低排放.     

混合动力客车与常规客车排放对比研究

利用车载测试系统,对混合动力客车及常规客车进行了整车排放测试,分析了混合动力客车在各典型行驶工况下的排放特征和车辆排放率随行驶力的变化关系.试验结果表明,混合动力车及常规车怠速工况时污染物排放贡献率最低,加速工况时污染物排放贡献率总体最高;常规车各污染物排放率随行驶力变化呈先下降后升高的趋势;混合动力车因其复杂的工作模式而导致复杂的变化趋势.该混合动力客车节能环保性能良好,比较适合在我国城市运行,但仍须加强怠速及加速工况的排放控制.     

燃料电池混合动力汽车动力系统匹配与优化研究

首先,基于中国客车典型循环工况对燃料电池混合动力系统进行匹配计算,确定了电动机、燃料电池发动机和蓄电池的基本参数;然后基于中国客车典型循环工况,建立燃料电池混合动力系统的优化模型,采用序列二次规划算法进行优化,分析了各种参数对整车燃料经济性的影响,包括燃料电池发动机与动力蓄电池之间的功率分配比、SOC的初始值与目标值、变速器传动比及传动比间隔以及主减速比等,为燃料电池混合动力汽车的构型提供指导。     

基于多种循环工况的混合动力客车制动能量回收对燃油经济贡献率的研究

建立再生制动能量回收的数学模型和试验评价方法,并针对某一并联混合动力城市客车,选择四种典型城市循环工况进行试验分析,得到不同行驶工况下混合动力客车的制动能量回收对整车燃油经济性的贡献率,对混合动力汽车的前期开发具有参考作用.     

基于Cruise/Simulink氢燃料电池混合动力客车能量管理策略研究

以某氢燃料电池混合动力客车为研究对象,应用AVL-Cruise和Matlab-Simulink软件搭建整车联合仿真平台;基于选定的城市客车工况需求,采用便于实时管理的模糊逻辑控制策略,并进行仿真分析。结果表明,本文提出的控制策略可以较好地对燃料电池和动力电池进行能量分配管理。     

混合动力客车用发动机ISG电机总成的台架测试系统

为满足混合动力客车动力系统的需要,开发一套基于CAN总线测控的台架测试系统,在台架上可实现混合动力客车用"发动机ISG"总成的工况测试。     

基于ADVISOR平台的燃料电池电电混合客车建模与仿真

介绍燃料电池电电混合客车的动力架构及燃料电池、动力电池、驱动电机的选型,并通过AD-VISOR平台进行建模与仿真.     

福田欧V"零排放"燃料电池客车将投入试运行

2008年4月20日,我国第3代燃料电池技术首款低地板城市客车在第lO届北京国际车展上举行发布仪式.这款来自福田欧V的客车采用电-电混合动力,配置镍氢动力电池组,真正实现了"零排放".     

混联式混合动力汽车控制策略开发与仿真研究

阐述了切换式混联混合动力汽车系统特点和控制模式。对该种混合动力汽车起步工况、正常行驶工况、减速工况和故障工况等工作模式进行了分析。利用PSAT软件建立了仿真模型,对整车性能仿真分析。通过与串联式ZK6108HGD混合动力客车进行对比,验证了仿真模型的准确性。     

混合动力的动力耦合及控制策略

结合城市公交车的实际工况,并对目前混联式混合动力进行分析,提出混联式混合电动客车动力总成及布置图,最后提出了混联式混合动力的工作模式。     

基于规则的HEV逻辑门限控制策略

混合动力汽车的控制策略对汽车运行时各性能十分重要,也对汽车油耗的高低有着重要的意义。文章以混合动力客车为基础,对其运行中的几种工作模式进行了分析。然后根据汽车的行驶车速下限、实时车速及电池状态,制定了基于规则的逻辑门限控制策略。最后,在CRUISE中搭建了整车模型,并嵌入控制策略完成仿真。结果表明:文章制定的控制策略满足了汽车经济性能,是正确合理的。     

串联型混合动力公交车性能仿真分析

在已建立的串联型混合电动公交车动力系统基础上,分析确定了混合电动汽车工作模式;采用MATLAB/SIMULINK仿真语言建立了串联型混合电动公交车动力系统仿真模型,预测了整车动力性和经济性,并对该串联型混合动力电动公交车发动机发电机辅助动力系统的工作特性进行了仿真分析。     

Fuel economy comparison of conventional drive trains series and parallel hybrid electric step vans

A hybrid electric vehicle (HEV) is a vehicle that combines a conventional propulsion system with an on-board rechargeable energy storage system to achieve better fuel economy than a conventional vehicle HEVs do not have limited ranges like battery electric vehicles, which use batteries charged by an external source. The different propulsion power systems may have common subsystems or components. The objective of this study is to compare the fuel economies of a conventional step van, a series hybrid electric step van (HESV), and a parallel HESV by calculating the fuel consumption using the ADVISOR software by NREL. We also showed the results of the vehicles in different driving cycles including the Central Business District bus cycles, the New York City Cycle, and the US EPA City and Highway cycles.     

四驱混联电动汽车的燃油经济性优化

从等效燃油量出发,建立了四驱混联电动汽车在充/放电模式下的等效模型。控制发动机工作在最经济区域,以等效燃油消耗率为优化目标函数,寻求出整车燃油消耗量最低的理想操作线。通过仿真和台架试验得到燃油经济性优化结果,结果表明理想操作线决定了发动机和各个电机的最佳控制值,可使车辆系统的效率最高,油耗最低。     

Powertrain system optimization for a heavy-duty hybrid electric bus

This research concerns the design of a powertrain system for a plug-in parallel diesel hybrid electric bus equipped with a continuously variable transmission (CVT) and presents a new design paradigm for the plug-in hybrid electric bus (HEB). The criteria and method for selecting and sizing powertrain components equipped in the plug-in HEB are presented. The plug-in HEB is designed to overcome the vulnerable limitations of driving range and performance of a purely electric vehicle (EV), and it is also designed to improve the fuel economy and exhaust emissions of conventional buses and conventional HEBs. Optimization of the control strategy for the complicated and interconnected propulsion system in the plug-in parallel HEB is one of the most significant factors for achieving higher fuel economy and lower exhaust emissions in the hybrid electric vehicle (HEV). In this research, the proposed control strategy was simulated to prove its validity using the ADVISOR (advanced vehicle simulator) analysis simulation tool.     

Economic value and utility of a powertrain system for a plug-in parallel diesel hybrid electric bus

This research is the first to develop a design for a powertain system of a plug-in parallel diesel hybrid electric bus equipped with a continuously variable transmission (CVT) and presents a new design paradigm of the plug-in hybrid electric bus (HEB). The criteria and method for selecting and sizing powertrain components equipped in the plug-in HEB are presented. The plug-in HEB is designed to overcome the vulnerable limitations of driving range and performance of a purely electric vehicle (EV) and to improve fuel economy and exhaust emissions of conventional bus and conventional HEBs. The control strategy of the complicated connected propulsion system in the plug-in parallel HEB is one of the most significant factors in achieving higher fuel economy and lower exhaust emissions of the HEV. In this research, a new optimal control strategy concept is proposed against existing rule-based control strategies. The optimal powertrain control strategy is obtained through two steps of optimizations: tradeoff optimization for emission control and energy flow optimization based on the instantaneous optimization technique. The proposed powertrain control strategy has the flexibility to adapt to battery SOC, exhaust emission amount, classified driving pattern, driving condition, and engine temperature. The objective of the optimal control strategy is to optimize the fuel consumption, electricity use, and exhaust emissions proper to the performance targets. The proposed control strategy was simulated to prove its validity by using analysis simulation tool ADVISOR (advanced vehicle simulator).     

重度混合动力汽车燃油经济性和排放多目标优化

考虑重度混合动力汽车运行模式切换时发动机频繁起停对油耗的影响,建立了整车动态仿真模型和综合考虑燃油消耗和排放的多目标优化模型,采用简化控制变量的动态规划算法并结合自动变速器经济性换挡规律,在NEDC工况下对多目标优化模型进行仿真.结果表明,发动机的频繁起停对整车燃油消耗有显著影响,采用动态规划算法可全局优化整车燃油经济...     

CA6100SH8并联混合动力客车工作模式与功率分配研究

以一汽自主开发的CA6100SH8并联混合动力客车为例,简要介绍其总成构型方案和控制系统原理;详细论述了混合动力客车的各种工作模式和各种模式的输入条件、输出结果,以及各种模式中发动机、电机之间的功率分配算法。最后基于离线仿真和整车试验验证了上述工作模式和功率分配算法的正确性。     

Matlab-based modeling,simulation and design package for Eletric,Hydraulic and Flywheel hybrid powertrains of a city bus

In this paper a package for designing, modelling and simulation of three hybrid powertrains are presented. These powertrains are Electric hybrid, Hydraulic hybrid and Flywheel hybrid. The differences among the proposed hybrid powertrains include the energy storage system components, the secondary power converter and also the powertrain configuration. The O457 city bus is considered as the benchmark vehicle. At first, the design process for each hybrid powertrain which is based on the power requirements of the bus in any driving condition is presented. Then, the powertrains modelling using MATLAB/Simulink as a powerful simulating tool is presented. The models are feed-forward and resemble the real world driving conditions. Each model has the blocks for the main components of the corresponding propulsion system. The most important stage in the modeling process is implementing of the components efficiency in each powertrain. Moreover, there is a block in each hybrid powertrain model for the energy management. Finally, the simulation results for comparing the usefulness of the hybrid powertrains are presented. The results indicate that the electric hybrid powertrain has the most effect on reducing the bus fuel consumption. But regarding the fabrication expenses and manufacturing complexity, the hydraulic hybrid powertrain is recommended.     

基于烟花算法的PHEV能量管理策略参数优化

为改善插电式混合动力汽车(PHEV)的燃油经济性,提出一种基于规则的能量管理策略.结合智能网联汽车技术,利用烟花算法(F WA)结合系统约束条件,对能量管理策略参数进行优化,以求使车辆在变化的路况下能耗最低.为减轻沉重运算负荷,设计了一种事件触发机制来控制优化操作的启停.当车辆油耗超过预设上限则开始优化,一旦油耗满足预...