共查询到19条相似文献,搜索用时 203 毫秒
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在经典的单行星排功率分流式混合动力系统构型上增加离合器和制动器,使其具有并联直驱挡位,从而组成一种新型多模式混合动力系统。该新型系统具有更高的综合系统效率、更多的混合动力运行模式和更强的动力输出。对新型系统进行较深入分析,阐述各模式下的运行规律,通过杠杆原理对各混合动力模式下的行星排运行和受力情况进行图形化说明。 相似文献
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(接上期)与传统的汽油机或柴油机汽车相比,混合动力汽车在动力结构和控制方面都有所不同。比如,丰田公司推出的混合动力系统采用了500~650V高压驱动电路、无级变速驱动桥、电机驱动的空调压缩机和电动冷却水泵等,这些新技术、新结构的综合运用,对维修技师进行混合动力汽车的正确保养、故障诊断和拆卸操作,提出了不同于传统内燃机汽车维修的要求。下面以丰田混合动力系统(简称HV系统)为例来介绍。 相似文献
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本文通过介绍汽车动力系统的发展,总结目前主要的动力系统以及动力系统的节能技术。包括发动机,混合动力汽车,电动汽车和燃料电池。着重以实际商用车为例,对各种动力系统进行说明。介绍了发动机的电控喷射技术、可变进气系统、柴油发动机电控共轨喷射技术。混合动力系统的构成形式。以及纯电动汽车的优劣。 相似文献
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Combined control of a regenerative braking and antilock braking system for hybrid electric vehicles 总被引:1,自引:0,他引:1
D. Peng Y. Zhang C. -L. Yin J. -W. Zhang 《International Journal of Automotive Technology》2008,9(6):749-757
Most parallel hybrid electric vehicles (HEV) employ both a hydraulic braking system and a regenerative braking system to provide
enhanced braking performance and energy regeneration. A new design of a combined braking control strategy (CBCS) is presented
in this paper. The design is based on a new method of HEV braking torque distribution that makes the hydraulic braking system
work together with the regenerative braking system. The control system meets the requirements of a vehicle longitudinal braking
performance and gets more regenerative energy charge back to the battery. In the described system, a logic threshold control
strategy (LTCS) is developed to adjust the hydraulic braking torque dynamically, and a fuzzy logic control strategy (FCS)
is applied to adjust the regenerative braking torque dynamically. With the control strategy, the hydraulic braking system
and the regenerative braking system work synchronously to assure high regenerative efficiency and good braking performance,
even on roads with a low adhesion coefficient when emergency braking is required. The proposed braking control strategy is
steady and effective, as demonstrated by the experiment and the simulation. 相似文献
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J. Kim N. Kim S. Hwang Y. Hori H. Kim 《International Journal of Automotive Technology》2009,10(6):733-742
A motor control strategy for an input-split hybrid electric vehicle (HEV) is proposed. From a power characteristic analysis,
it is found that the powertrain efficiency decreases for speed ratios at which power circulation occurs. Using dynamic models
of an input-split HEV powertrain, a motor-generator control algorithm for obtaining high system efficiency is designed by
inversion-based control. The performance of the control algorithm is evaluated by the simulator which is developed based on
PSAT, and simulation results are compared with the test results. It is found that, even if the engine thermal efficiency is
sacrificed by moving the engine operation point from the OOL for the control strategy, improved overall powertrain system
efficiency can be achieved by the engine operation that gives a relatively high efficiency from the viewpoint of the overall
powertrain efficiency. The control algorithm developed can be used in design of future electric vehicles. 相似文献
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混合动力电动汽车模糊逻辑控制策略的研究与仿真 总被引:6,自引:0,他引:6
以四川汽车工业集团野马混合动力电动汽车设计要求为基础,提出了一种混合动力电动汽车模糊逻辑控制策略。这种策略通过对油耗和各排放参数动态地分配权重值确定出发动机的最佳转矩,然后再根据模糊控制原理,以电池SOC值、汽车驱动需求的输出转矩和电动机转速为模糊输入确定出发动机的实际输出转矩,最终实现整车油耗和排放的综合优化。通过在S imu link软件中搭建该控制策略的仿真模型并与基础的电力辅助控制策略相比较,证明了这种控制策略有利于整车运行经济性和环保性的提高。 相似文献
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介绍2018版的新车评价规程(C-NCAP)对主动安全系统的电子控制系统提出的新要求。基于智能交通的汽车自动紧急制动系统是先进安全技术的一项重要内容,本文着重介绍自动紧急制动系统的功能、分层架构前端传感系、底层执行系统、系统架构、AEB控制策略及AEB与ABS协调控制。最后还介绍新版规则对纯电动汽车/混合动力汽车(EV/HEV)的测试项。 相似文献