【摘 要】
:
DistributedDrive Electric Vehicles(DDEV)canachievethe best energy-savingrunning state of electric vehicle in real time.The driving efficiency characteristics of in-wheel motor have been achieved throu
【机 构】
:
School of Automotive and Traffic Engineering,Jiangsu University;Automotive Engineering Research Inst
论文部分内容阅读
DistributedDrive Electric Vehicles(DDEV)canachievethe best energy-savingrunning state of electric vehicle in real time.The driving efficiency characteristics of in-wheel motor have been achieved through in-wheel motor characteristics experiment,a-nalysis of the principle of vehicle energy-saving through optimal torque allocation was proposed.Combining the advantages of methods to improve the motor efficiency and motor response speed,optimized torque energy-saving allocation strategy was presented based on fuzzy weight coefficient,then optimized front axle torque allocation coefficient was obtained.Simulation and contrast analysis of vehicle energy consumption in vehicle driving cycle was carried on in ways of rear axle drive,average torque allocation and optimized torque energy-sav-ing allocation,the results show that the optimized torque energy-saving allocation strategy can decrease the energy consumption up to ap-proximately 0.058KJ and 0.117KJ per unit mileage comparing with the rear axle drive and average torque allocation.The road test also verified the energy-saving effect of the optimized torque energy-saving allocation algorithm.
其他文献
油气弹簧由于其无可比拟的优越性能,具有非常广阔的应用前景.密封件是油气弹簧的关重部件,其耐久性直接决定了油气弹簧的性能.本文基于理论分析,结合大量工程实践经验,从密封润滑性、温域适应性和油液相容性三个方面分析了造成油气弹簧密封故障的原因,总结了油气弹簧组合密封设计与选型的准则.
Application status of life cycle assessment(LCA)method in Chinese automotive industries is reviewed.A questionnaire that includessome key issues on LCA application in China was sent to some OEMs,suppl
本文主要介绍了重型车整车的NOx排放试验方法,并结合DB11965-2013《车载法》标准详细阐述了NOx数据判定方法的具体使用要求.通过试验得出不同车型的整车NOx的排放水平差异较大,并从发动机、行驶工况、后处理器等方面分析了整车的NOx排放特性.
本文采用溶胶凝胶法制备了多种钙钛矿类复合金属氧化物,并采用XRD、SEM、EDX以及TG对其结构、形貌、组成以及催化性能进行了表征.XRD和EDX测试结果表明,合成的物质以类钙钛矿型金属氧化物结构存在;SEM表明,合成的材料微观尺寸在纳米级;TG实验表明,La0.8Sr0.2Cu0.16Fe0.84O3复合氧化物对模拟炭烟燃烧具有最大催化活性,甚至高于贵金属Rh掺杂的La0.7Sr0.3Fe0.7
在严格的排放法规下,选择性催化反应(Selective Catalytic Reduction,SCR)已经成为减少柴油机NOX排放的标准方法.尿素-水溶液的喷射以及与混合器表面和发动机尾气的相互作用控制着氨气的均匀性及边界和混合器表面结晶的生成,这些都影响着SCR的性能和生命周期.计算流体力学(Computational fluid dynamics,CFD)被用来研究一款匹配重型柴油机的含有双
本文旨在研究非道路柴油机进行DPF匹配的策略.参考不同非道路机械保有量占比,选取6台典型非道路机械,使用温度和压力数据采集系统监测六台机械的排气温度和背压,以背压作为DPF再生始点选取的标准,以排气温度作为选择DPF再生方式的依据,为不同的非道路机械选取适宜的DPF系统.之后借助NanoMet3检测DPF前后颗粒物数量,实验工况不仅包括全工况,同时也关注了非道路机械所特有的高低怠速工况,对比分析数
In this paper,we confirmed the connection between the battery units in power battery system by quoting the reliability theory,and studied whether subjects conform to the reliability model theory by co
本文针对采用行星齿轮排作为动力耦合机构的多模混合动力汽车,分析了所有双行星齿轮排构型方案的可能拥有组合形式.通过所提出的模型自构法与穷举搜索的方法,建立了所有可行构型的动力学模型,并以此为基础,提出了一整套快速高效的构型方案优化设计方法.将该方法用于某混合动力电动客车的优化,得到了一组具有更出色燃油经济性与加速性能的构型方案.
When the hybrid cars driving in the crowded city,frequent starting of the engine is inevitable and the driving performance in engine starting process is t-he key indicator of the customers evaluation
本文针对电动汽车电池模块的不一致问题提出了主动均衡的解决方案,从而改善电池一致性,提高电池使用寿命,降低使用成本.本文从均衡电路分析、电路仿真验证论证变压器均衡电路和电感均衡电路的可行性,仿真验证均衡效果.