| 基于系统效率最优的CVT混合动力轿车转矩优化分配方法 |
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| 引用本文： | 任勇,郑永霞,苏岭,严钦山,罗禹贡.基于系统效率最优的CVT混合动力轿车转矩优化分配方法[J].汽车实用技术,2012(7):1-6. |
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| 作者姓名： | 任勇 郑永霞 苏岭 严钦山 罗禹贡 |
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| 作者单位： | 1. 重庆长安新能源汽车有限公司,重庆,401120
2. 清华大学汽车安全与节能国家重点实验室,北京,100084 |
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| 基金项目： | 该项目由工信部电子信息产业发展基金项目 |
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| 摘 要： | 无级变速器CVT消除了挡位概念,其速比在一定范围内连续可调。配备CVT的混合动力汽车能够实现动力源转矩和传动系统的优化匹配。针对此问题,提出了基于系统效率最优的CVT中度混合动力轿车动力源转矩优化分配方法:。该方法:综合考虑了各个关键部件的效率,以混合动力系统的总体效率为优化目标,以车速、车辆加速度、电池SOC为状态变量,优化分配了驱动工况下各动力源输出转矩,为整车能量管理策略的制定奠定了基础。
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| 关 键 词： | 混合动力汽车 优化分配 无级变速器 |
Torque Optimal Distribution Method for Hybrid Electric Vehicles with CVT based on Maximum System Efficiency |
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| Authors: | Ren Yong Zheng Yongxia Su Ling Yan QinShan Luo Yugong |
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| Institution: | 2 (l.Chongqing Changan New Energy Automobile Co.,Ltd.,Chongqing 401120 2.Tsinghua University,State Key Laboratory of Automotive Safety and Energy,Beijing 100084) |
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| Abstract: | Hybrid electric vehicles with CVT(Continuously variable transmission) whose ratio can be changed continuously can optimize and match their power systems and transmission systems.According to this problem, a torque optimal distribution method for mild hybrid electric vehicles with CVT based on maximum system efficiency is proposed.This method considerate the efficiencies of key components and takes the maximum system efficiency as optimization objective while vehicle speed,acceleration and battery SOC as state variables.After getting the optimal output torque of motor and engine under different driving conditions,a foundation is laid for developing the energy management strategy for mild hybrid electric vehicles with CVT. |
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| Keywords: | hybrid electric vehicle optimal distribution continuous variable transmission |
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