Chinese Journal of Mechanical Engineering >

2020 , Vol. 33 >Issue 3: 50 - 50

DOI: https://doi.org/10.1186/s10033-020-00466-y

Mechanism and Robotics

Configuration Synthesis and Performance Analysis of 9-Speed Automatic Transmissions

  • Huafeng Ding ,
  • Changwang Cai ,
  • Ziming Chen ,
  • Tao Ke ,
  • Bowen Mao
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  • 1. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China;
    2. Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System, Yanshan University, Qinhuangdao 066004, China;
    3. School of Mechanical Engineering and Electronic Information, China University of Geosciences(Wuhan), Wuhan 430074, China

收稿日期: 2019-12-02

  修回日期: 2020-05-31

  网络出版日期: 2020-08-01

基金资助

Supported by National Natural Science Foundation of China (Grant Nos.51975544, 51675495)

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Configuration Synthesis and Performance Analysis of 9-Speed Automatic Transmissions

  • Huafeng Ding ,
  • Changwang Cai ,
  • Ziming Chen ,
  • Tao Ke ,
  • Bowen Mao
Expand
  • 1. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China;
    2. Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System, Yanshan University, Qinhuangdao 066004, China;
    3. School of Mechanical Engineering and Electronic Information, China University of Geosciences(Wuhan), Wuhan 430074, China

Received date: 2019-12-02

  Revised date: 2020-05-31

  Online published: 2020-08-01

Supported by

Supported by National Natural Science Foundation of China (Grant Nos.51975544, 51675495)

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摘要

Current research of automatic transmission (AT) mainly focuses on the improvement of driving performance, and configuration innovation is one of the main research directions. However, finding new configurations of ATs is one of the main limitations of configuration innovation. In the present study, epicyclic gear trains (EGTs) are applied to investigate mechanisms of 9-speed ATs. Then four kinematic configurations are proposed for automatic transitions. In order to evaluate the performance of proposed mechanisms, the lever analogy method is applied to conduct kinematic and mechanical analyses. The power flow analysis is conducted, and then transmission efficiencies are calculated based on the torque method. The comparative analysis between the proposed and existing mechanisms is carried out where obtained results show that proposed mechanisms have reasonable performance and can be used in ATs. The prototype of an AT is manufactured and the speed test is conducted, which proves the accuracy of analysis and the feasibility of proposed mechanisms.

关键词： Automatic transmission; Epicyclic gear train; Lever analogy; Gear ratio; Torque method

本文引用格式

Huafeng Ding , Changwang Cai , Ziming Chen , Tao Ke , Bowen Mao . Configuration Synthesis and Performance Analysis of 9-Speed Automatic Transmissions[J]. Chinese Journal of Mechanical Engineering, 2020 , 33(3) : 50 -50 . DOI: 10.1186/s10033-020-00466-y

Abstract

Current research of automatic transmission (AT) mainly focuses on the improvement of driving performance, and configuration innovation is one of the main research directions. However, finding new configurations of ATs is one of the main limitations of configuration innovation. In the present study, epicyclic gear trains (EGTs) are applied to investigate mechanisms of 9-speed ATs. Then four kinematic configurations are proposed for automatic transitions. In order to evaluate the performance of proposed mechanisms, the lever analogy method is applied to conduct kinematic and mechanical analyses. The power flow analysis is conducted, and then transmission efficiencies are calculated based on the torque method. The comparative analysis between the proposed and existing mechanisms is carried out where obtained results show that proposed mechanisms have reasonable performance and can be used in ATs. The prototype of an AT is manufactured and the speed test is conducted, which proves the accuracy of analysis and the feasibility of proposed mechanisms.

Key words： Automatic transmission; Epicyclic gear train; Lever analogy; Gear ratio; Torque method

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