摘要
为有效降低整车油耗,研制传动比间隔合理的多挡四排行星齿轮机构(PGM)自动变速器(AT)传动方案成为新的趋势。基于杠杆法原理,在分析单排与三排并联PGM的输入、输出位置及接合元件布置形式的基础上,提出了由单排与三排并联PGM串联(简称为“单串三并”)的结构杠杆图;通过对“单串三并”转速线杠杆图的分析,根据AT的设计要求,筛选出5种合理的传动方案;根据接合元件工作情况与接合元件及挡位数进行对比,优选出最优传动方案。将该最优传动方案与克莱斯勒45RFE AT相对比,在45RFE AT的基础上增设1排PGM,即可设计出挡位数更多、性能更优的AT传动方案。与2个双排并联PGM串联形成的四排混联PGM AT传动方案相比,增加了2~3个前进挡位,降低了换挡控制的难度。
In order to effectively reduce the fuel consumption of the whole vehicle,development of a multi-speed four-row planetary gear mechanism(PGM)automatic transmission(AT)transmission scheme,with a reasonable transmission ratio interval,has become a new trend.Based on the principle of lever method,the input and output positions of single-row and three-row parallel PGM series are analyzed separately.On the basis of the possible arrangement of the engaging elements,the lever structural diagram of single-row in series with three-row parallel PGM(referred to as"1-row+3-row parallel PGM")is proposed.Through the analysis of the"1-row+3-row parallel PGM"lever speed diagram,according to the design requirements of AT,the five reasonable transmission schemes are compared and the optimal transmission scheme is selected.Comparing this optimal transmission scheme with the Chrysler 45RFE AT,adding a row of PGM based on the 45RFE AT can design a"1-row+3-row parallel PGM"AT transmission scheme with more gears and better performance.Compared with the four-row hybrid PGM AT transmission scheme formed by two double-row parallel PGM in series,also increases 2~3 forward gears and reduces the difficulty of shift control.
作者
刘晋霞
刘磊
王爱波
Liu Jinxia;Liu Lei;Wang Aibo(College of Transportation,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《机械传动》
北大核心
2021年第3期127-133,共7页
Journal of Mechanical Transmission
基金
山东省重点研发计划(2019GGX103024)。
关键词
杠杆法
自动变速器
行星齿轮机构
多排行星齿轮机构连接
传动方案
Lever method
Automatic transmission
Planetary gear mechanism
Multi-row planetary gear mechanism connection
Transmission scheme
