AMT液压选换挡执行机构参数设计  

Parametric Design of Hydraulic Gear-shift Actuators for AMT

作　　者：孙冬野[1] 陈丽君[1] 申付松[1] 张学锋[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《世界科技研究与发展》2013年第2期238-242,共5页World Sci-Tech R&D

基　　金：国家自然科学基金面上项目(51075410);重庆科技攻关计划项目(2010AC6049)资助

摘　　要：以电控机械式自动变速系统为研究对象,建立一种自动选换挡液压执行机构的正向设计方法。根据试验测得的原型车性能参数制定换挡规律,以国家标准28工况为依据,通过整车模型仿真得出最大同步力。分析挂挡过程受力情况并估算出最大挂挡阻力,从而进行换挡液压缸的参数设计、阀类元件和辅助元件的选型。最后通过Matlab/Simulink软件对液压缸速度动态响应特性进行了仿真验证。此设计思路及方法为车辆自动选换挡液压系统的参数设计、改进及预测提供了有效依据。To control mechanical automatic transmission system as the research object, a kind of design method for automatic hydraulic shift actuators is set up. According to the measurement of the prototype vehicle performance parameters, the reasonable shift rules of dynamic performance and fuel economy in the national standard 28 conditions are made firstly. Then the model is established, with the maximum synchronous force worked out. The structure parameters of shift hydranlic cylinder, the selection of valves and auxiliary components are determined, according to the calculations of the biggest resistance force. Finally, simulation analysis dynamic characteristics of hydraulic cylinder is gotten by Matlab/Simulink software. With these results, theoretical basis is provided for the design, improvement and predict of automatic shift hydraulic system.

关 键 词：换挡执行机构 液压系统 参数设计 动态仿真 

分 类 号：U463.212[机械工程—车辆工程]