共查询到18条相似文献,搜索用时 187 毫秒
1.
2.
国外汽车传动技术的一些最新发展 总被引:1,自引:0,他引:1
在低碳、节能、环保的要求下,汽车行业将不断进行高效率、低排放汽车传动技术的创新发展。在各种类型变速器共存的全球汽车市场中,汽车传动方案的创新和产品设计的优化影响着其市场份额。特别是近年来高速发展的混合动力技术逐渐趋于成熟,各工程公司争相研究的电驱动技术也将成为未来汽车传动技术研究的重点和挑战。从市场状况、方案创新、产品优化、混合动力、电驱动和关键零部件等几个方面对国外汽车传动技术最新发展情况进行了概述,为国内汽车传动技术的开发研究提供参考。 相似文献
3.
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。 相似文献
4.
5.
6.
7.
针对目前国内混合动力汽车传动系统的局限性,提出了结合行星机构的动力耦合功能和无级变速器的连续速比调节特性的新型混合动力汽车传动系统方案,运用模拟杠杆法确定了4种结构紧凑、能满足混合动力汽车多种工作模式需要的新型传动系统.分析了新型传动系统在汽车各种行驶工况下的多种工作模式及其动力传递路线和在各工作模式下的耦合特性,为整车控制策略的制定和传动系统的参数匹配与仿真奠定基础.与丰田THS、通用TWO-MODE系统进行对比分析的结果表明,新型传动系统具有结构简单、控制方便和传动效率高等优点. 相似文献
8.
9.
10.
11.
12.
Torque control of engine clutch to improve the driving quality of hybrid electric vehicles 总被引:1,自引:0,他引:1
H. S. Hwang D. H. Yang H. K. Choi H. S. Kim S. H. Hwang 《International Journal of Automotive Technology》2011,12(5):763-768
As a powertrain for hybrid electric vehicles (HEVs), the automatic transmission (AT) is not only convenient for the driver
but also reduces hybridization costs because the existing production line is used to produce the AT. However, it has low fuel
economy due to the torque converter. To overcome this disadvantage, this paper studies HEVs equipped an AT without a torque
converter. In this case, additional torque control is needed to prevent the driving quality from deteriorating. This paper
suggests three different torque control methods and develops a simulator for an HEV that can simulate the dynamic behaviors
of the HEV when the engine clutch is engaged. The HEV drive train is modeled with AMESim, and a controller model is developed
with MATLAB/Simulink. A co-simulation environment is established. By using the developed HEV simulator, simulations are conducted
to analyze the dynamic behaviors of the HEV according to the control methods. 相似文献
13.
HEV控制器硬件在环仿真平台的研究与开发 总被引:3,自引:0,他引:3
针对控制器传统开发方法中存在的局限性以及混合动力汽车动力传动系统控制的复杂性,应用控制系统现代开发技术,为某型混合动力客车多能源动力总成控制器开发了硬件在环仿真测试平台,该平台包括实时硬件和系统模型、信号调理电路等,并利用它对控制器进行了仿真测试。仿真测试结果与试验结果说明,所开发平台模型的精度基本能够满足仿真测试要求。控制器的环境试验和在EMC试验中的成功应用以及控制器在车上的正常运行,验证了在混合动力汽车多能源动力总成控制器的开发过程中采用自行开发硬件在环仿真测试平台这一技术方案的可行性。 相似文献
14.
15.
16.
The hybridization of the conventional thermal vehicles nowadays constitutes a paramount importance for car manufacturers,
facing the challenge of minimizing the consumption of the road transport. Although hybrid power train technologies did not
converge towards a single solution, series/parallel power trains with power-split electromechanical transmissions prove to
be the most promising hybrid technology. In fact, these power trains show maximum power train overall efficiency and maximum
fuel reduction in almost all driving conditions compared to the conventional and other hybrid power trains. This paper addresses
the model and design of the electro-mechanical configuration of one of the most effective HEV power trains: case study of
the 2nd generation Prius. It presents the simulation work of the overall operation of the Toyota Hybrid System (THS-II) of
the Prius, and explores not only its power-split eCVT innovative transmission system but also its overall supervision controller
for energy management. The kinematic and dynamic behaviors of the THS-II power train are explained based on the power-split
aspect of its transmission through a planetary gear train. Then, the possible regular driving functionalities that result
from its eCVT operation and the energy flow within its power train are outlined. A feed-forward dynamic model of the studied
power train is next proposed, supervised by a rule-based engineering intuition controller. The energy consumption of the THS-II
proposed model has been validated by comparing simulation results to published results on European, American and Japanese
regulatory driving cycles. 相似文献
17.
18.
为解决传统电控机械式自动变速器(AMT)换挡过程中的动力中断问题,同时提高整车动力性与经济性,提出一种将行星机构安装在AMT输入端构成的新型自动变速器(N-AMT),并对N-AMT基本结构进行详细介绍,同时就驻车、起步和换挡过程中行星机构工作模式进行详细分析。首先根据最大、最小传动比、挡位数和相邻速比的设计要求对N-AMT进行速比初步设计,然后结合AMT换挡和双离合(DCT)换挡各自特点,以动力性为约束,NEDC工况最佳燃油经济性为目标进行遗传算法速比优化设计。利用速比优化设计方法进行不同挡位N-AMT方案设计,并根据动力学关系建立整车模型,对N-AMT进行动力性与经济性分析。综合考虑不同挡位数方案的分析结果和变速器结构成本等因素,确定8挡N-AMT为最终设计方案。最后对8挡N-AMT进行台架、起步和顺序换挡试验。研究结果表明:8挡N-AMT的NEDC循环工况油耗为6.38 L·(100 km)-1,较5挡AMT原型车工况油耗6.95 L·(100 km)-1减少了8.86%;N-AMT可以有效消除部分挡位间动力中断的问题,在30%加速踏板开度下,8挡N-AMT的起步时间为1.55 s,较5挡AMT起步时间1.61 s减少了3.7%,整车动力性得到提高;N-AMT换挡时间保持在1.05 s以内,且换挡平顺性较好。 相似文献