换挡过程两换挡执行元件充放油交替方法研究

doi:10.3969/j.issn.1000-1093.2015.01.002

兵工学报 ›› 2015, Vol. 36 ›› Issue (1): 12-18.doi: 10.3969/j.issn.1000-1093.2015.01.002

换挡过程两换挡执行元件充放油交替方法研究

李春芾¹，陈慧岩²

（1.内蒙古大学交通学院，内蒙古呼和浩特 010070； 2.北京理工大学机械与车辆学院，北京 100081）

收稿日期:2014-02-11 修回日期:2014-02-11 上线日期:2015-03-14
通讯作者: 李春芾 E-mail:jtlcf@imu.edu.cn
作者简介:李春芾（1974—），男，副教授
基金资助:
国家高技术研究发展计划项目（2012AA111713）；内蒙古自治区高等学校科学研究项目（NJZY12007）

Research on Timing Method of Two Shifting Actuators Filling and Draining Hydraulic Oil During Shifting

LI Chun-fu¹， CHEN Hui-yan²

(1.Transportation college, Inner Mongolia University, Hohhot 010070, Inner Mongolia, China;2.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

Received:2014-02-11 Revised:2014-02-11 Online:2015-03-14
Contact: LI Chun-fu E-mail:jtlcf@imu.edu.cn

摘要/Abstract

摘要： 液力机械自动变速器（AT）换挡过程中两个换挡执行元件充放油交替过程时序不当会造成动力中断或重叠过多（俗称“挂双挡），并引起功率损失、换挡冲击及加剧换挡执行元件磨损。以艾里森大功率自动变速器（HD4070PR自动变速器）为研究对象，利用拉格朗日方程建立换挡过程的动力学方程，依据所建立的方程分析升降挡过程中两换挡执行元件充放油交替方法，并通过自行开发的电控系统进行了实车试验验证。研究结果表明：对于升挡过程通过合理的动力搭接既可以实现无动力中断换挡，又可以减小换挡冲击；对于降挡过程不可避免出现动力中断，只能尽可能地降低动力损失。

关键词: 控制科学与技术, 液力机械自动变速器, 换挡执行元件, 交替定时方法

Abstract: The shifting process of automatic transmission is an alternating process of two actuators filling and draining the hydraulic oil. The improper oil filling and draining of two shifting actuators may cause power interruption or too much overlap, power lose, impact of shifting and aggravated wear of shift actuator. Lagrange equation is used to establish the dynamic equation of the shifting process by taking Allison automatic transmission (HD4070PR) as the study subject. The timing method of two shifting actuators filling and draining hydraulic oil during shifting process is analyzed on the basis of the equation, and verified by real vehicle test. The research results show that, for the upshifting process, the power shifting can be realized, and the impact of shifting can be reduced through the rational power lap;and for the downshift process, since the emergence of power interruption is inevitable, only the loss of the power should be reduced as far as possible.

Key words: control science and technology, hydraulic mechanical automatic transmission, shifting actuator, timing method

中图分类号:

U463.212⁺.2

李春芾，陈慧岩. 换挡过程两换挡执行元件充放油交替方法研究[J]. 兵工学报, 2015, 36(1): 12-18.

LI Chun-fu， CHEN Hui-yan. Research on Timing Method of Two Shifting Actuators Filling and Draining Hydraulic Oil During Shifting[J]. Acta Armamentarii, 2015, 36(1): 12-18.

参考文献

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换挡过程两换挡执行元件充放油交替方法研究

Research on Timing Method of Two Shifting Actuators Filling and Draining Hydraulic Oil During Shifting

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