双模式液压机械传动工作特性分析  

Performance analysis of dual mode hydro-mechanical transmission

作　　者：杜玖玉[1] 苑士华[1] 魏超[1] 邹云飞[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《农业工程学报》2009年第4期86-90,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家部委预研项目(22001020201)

摘　　要：现有一段式液压机械传动传递功率能力不能满足大功率车辆要求,该文提出一种新型双模式复合分流式液压机械传动方案。结合现有车型,建立了系统的稳态运动学模型,分析了液压机械传动系统的转速特性、转矩特性及功率特性等。该方案综合了两种液压机械传动形式优点,具有良好的起步特性,较佳的功率流特性,扩大了液压元件的工作范围,并且提供了液压机械节能传动的良好平台,其发展前景广阔。The power transmitting capacity of existing single range hydro-mechanical transmission cannot meet high power requirement of heavy duty vehicle. A new type of dual mode compound power split hydro-mechanical transmission was developed,based on the principle of input split and output split types of hydro-mechanical transmission（HMT）. Qausi-steady state equations were provided with parameters of a certain vehicle. By the equations,the characteristics of speed ratio,output torque and the power flow were analyzed. The scheme took the advantages of both types of HMT,including good starting performance and power flow characteristics,and the wording range of hydraulic units were improved. It provides a platform for energy saving transmission and is of a promising future as well.

关 键 词：液压机械传动 功率流 转矩 双模式 混合分流 外特性 

分 类 号：S219.032.1[农业科学—农业机械化工程] TH137.3[农业科学—农业工程]