EQ611OHEV并联混合动力系统参数匹配及性能研究

阐述了EQ6110HEV并联混合动力总成结构和采用的控制策略,提出了并联混合动力汽车动力传动系统参数匹配方法及过程,分析了电机峰值功率及基速点的选取对汽车动力性和经济性的影响.并将匹配方案仿真结果与试验结果进行比较,结果说明该匹配方法正确可行,可为动力总成优化提供理论依据.     

混合动力汽车动力总成试验台研究

基于混合动力汽车有串联、并联和混联等多种结构形式的特点,提出以模块化设计思想来搭建混合动力汽车动力总成试验台的方法,从而达到了在比较短的时间内、以尽量小的改动适应不同混合动力汽车动力总成结构形式组合需要的目标。根据研究需要,首先完成了混合动力汽车动力总成试验台并联形式的建设,并利用该试验台对所研制的混合动力城市客车多能源动力总成控制器进行了初步调试,验证了该控制器的软硬件设计和并联电动助力型控制策略。同时,所完成的发动机台架试验和电机台架试验也充分证明了试验台模块化设计思想的可行性和有效性。     

燃料电池汽车动力总成结构配置及参数优化匹配

结合燃料电池大客车动力系统的实际开发过程,分3个步骤阐述燃料电池汽车动力总成结构配置和参数匹配的一般方法。第1步,通过分析燃料电池的特性论证了动力总成结构配置的优化解决方案。第2步,通过分析不同类型功率部件特性阐述了主要功率部件选型的依据,并且根据设计性能要求进行动力总成主要部件基本参数设计。第3步,进行燃料电池混合动力总成参数优化匹配的研究。仿真和实验台测试的结果证明所设计的燃料电池大客车动力总成满足要求。     

电动轮驱动的混合动力汽车开发方案

分析了目前世界上典型的混合动力汽车动力总成方案,从结构模式、汽车性能以及具体布置型式3方面进行了详细地比较。提出了一种采用电动轮驱动的混合动力汽车开发方案,该方案基于某型轿车平台进行混合动力汽车的设计,动力总成采用ISG并联混合模式。同时在后轮安装2个轮毂电机,实现电动轮驱动模式。该技术开发方案,对电动轮技术以及混合动力开发技术的研究与发展具有十分重要的参考意义。     

大客车动力总成的快速匹配

基于汽车原理及优化设计原理,以Matlab软件为计算平台,开发了一套精确实现大客车动力总成匹配的计算机程序,程序运行结果可生成客车多种动力特性图,为大客车动力总成的快速匹配提供了目标依据.经过实践证明,此方法直观、实用,可实现客车动力总成的快速匹配.     

一种最佳的汽车混合动力总成

介绍了对混合动力总成进行优化的建模及仿真工具《汽车快速性能优化及报告工具包—汽车系统模块(RAPTOR^TM—VSM)软件包》，指出了优化混合动力总成需在混合动力发动机、电动机、电池、超级电容器、动力总成配置和自动／手动变速器(AMT)控制器等方面做的工作。     

基于Matlab的并联混合动力汽车性能指标估算

本文结合混合动力汽车理论和反向仿真思想，利用Matlab软件建立了并联混合动力汽车的仿真模型，实现了对混合动力汽车能量效率、动力性和经济性评价指标的估算，为国内进行并联混合动力汽车性能指标估算提供了参考。同时本文提出的关于混合动力汽车能量效率的定义和估算方法，可以利用仿真模型方便地实现该评价指标的估算，该估算方法具有一定的实用性和方便性。     

混合动力轿车多能源动力总成控制系统研制与开发

介绍某型混合动力轿车多能源动力总成控制系统的设计思想和关键技术,着重阐述混合动力系统功能设计、控制逻辑和策略、系统硬软件设计以及动力系统台架联合调试的情况。研究轻度并联混合动力系统的控制策略、CAN通信、测试和试验等技术和方法,通过提高系统的控制功能和性能,最终达到改善混合动力汽车的动力性、经济性及排放等目的。     

汽车动力总成悬置系统及悬置设计与实验验证

动力总成悬置系统对汽车的NVH性能有重要影响,本文论述了汽车动力总成悬置系统与整车匹配设计的若干要点,和悬置元件设计计算的方法。介绍了悬置性能测试和疲劳测试的方法,以及汽车动力总成悬置系统隔振性能测试的内容和要点。     

某汽车怠速抖动问题分析与改进

文章首先论述了汽车怠速振动的原理,汽车动力总成的振动模型,模态频率和解耦率的试验方法。继而对问题车辆的动力总成及悬置系统的缺陷进行计算分析。通过模拟计算,确定优化后的方案满足匹配要求。最终通过试验测试结果确定优化方案可行。     

Parametric optimization of EQ6110HEV hybrid electric bus based on orthogonal experiment design

Parametric optimization is an important step for any mechanical system design, including the development and design of a hybrid electric bus. To obtain an optimized parameter grouping of the EQ6110HEV hybrid electric bus for best fuel economy, an orthogonal experiment design method is applied to the parameter optimization process of the EQ6110HEV hybrid prolusion system. This paper proposes two orthogonal experiment methods; the basically orthogonal experiment method and the synthetically orthogonal experiment method. By this means, the development time and the testing costs are reduced, and the impact of factors and their optimal levels are obtained by a range analysis of the experiment results. The results show that the fuel economy of the optimized parameter grouping is improved by 4.1 percent for the four-stage urban driving cycle in China and by 8.7 percent for the Wuhan urban driving cycle of public buses in China, in comparison with that of the parameter grouping of the current configuration.     

液压混合动力公交车动力性能仿真与试验研究

将EQ6110公交车改造为并联式液压混合动力公交车,基础车的动力系统不作改变,建立了液压混合动力公交车模型,对液压系统独立工作时的驱动和制动性能进行了仿真及实车试验,为系统的参数匹配提供依据.采用简化公交循环工况的实车试验表明,动力性能满足起步和制动要求,燃油经济性改善达25%以上;另外,仿真结果也表明,动力性能可以满足国家典型公交行驶循环下的起步和制动性要求,制动再生效率达70%,燃油经济性改善达30%.     

混合动力客车侧面耐撞性分析

建立东风EQ6110HEV6混合动力客车和某MPV有限元模型,基于美国公共交通协会(APTA)对侧面碰撞要求,联合HyperWorks和LS-DYNA软件建立了混合动力客车与MPV侧面碰撞的有限元模型,仿真计算了MPV以40km/h的速度从侧面90°撞击该混合动力客车。以该混合动力客车结构变形、各测点加速度值、乘员生存空间侵入量为评价指标,分析了该混合动力客车侧面耐撞性能,为客车碰撞安全性的判定提供参考。     

Simulation of city bus performance based on actual urban driving cycle in China

This paper establishes the simulation model of a city bus on the basis of the EQ6110 bus prototype and its experimental data. According to the actual urban driving cycle, the fuel economy and the traction performance of the EQ6110 city bus have been simulated, and factors such as the driving cycle, the loss of power to engine accessories, the gear-shifting strategy, the fuel shut-off strategy of the engine, etc., which influence on the bus’s fuel economy, are also quantitatively analyzed. Some conclusions are drawn as follows: (1) driving cycles have a great influence on the fuel economy of a city bus; (2) under the typical urban driving cycle of the public bus in China, the engine fuel shut-off strategy can save about 1 to 1.5 percent of the fuel consumption; and (3) the optimized gear-shifting rules can save 6.7 percent of the fuel consumption. Experimental results verify that the fuel economy for the EQ6110 public bus is improved by 7.2 pecent over the actual Wuhan urban driving cycle of the current public bus in China.     

EQ6480客车CVT电控系统试验

介绍了EQ6480客车CVT(Continuously Variable Transmission)电子液压控制系统的设计，CVT传动器与发动机的动态匹配与控制算法。针对汽车运行的典型工况，在专用的传动器试验台上进行了台架试验。     

CAN总线在混合动力电动公共汽车中的应用

介绍了CAN总线及其通讯协议,结合混合动力电动汽车的特性阐述了CAN总线系统总体设计的思路。以混合动力内燃发电系统控制器为例,简要介绍CAN总线通信的软、硬件实现方法。该设计已应用在混合动力柴油发电机组控制器中,满足了控制需要。     

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.     

基于Cruise的客车动力传动系统的匹配研究

动力传动系统的合理匹配与否对客车动力性和燃油经济性的好坏有直接的影响。这里以某客车为例,基于Cruise软件建立该车整车仿真模型并验证模型的准确性。以变速器速比和主减速器速比为匹配变量,利用DOE试验设计方法对适合该客车的两种变速器和五种主减速器进行试验设计组合,然后对组合方案进行动力匹配计算,最后根据相关的约束条件,选出最优匹配方案。     

混联式混合动力电动汽车动力总成的优化匹配与监控

提出一种根据所用监控策略,在大设计空间内搜寻混合动力电动汽车(HEV)多能源动力总成最优机电拓扑布局和机电匹配方案的一套方法,并由此构建了基于内燃机、电机等元件“可缩放”子模型,面向HEV动力总成的系统动力学仿真平台。利用该平台,对采用目标函数瞬时最优监控策略的混联式HEV动力总成进行机电优化匹配取得了满意效果。     

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.