• CN:11-2187/TH
  • ISSN:0577-6686

›› 2010, Vol. 46 ›› Issue (13): 116-121.

• 论文 • 上一篇    下一篇

高效液力变矩传动系统

李华;姚进;赵世佳   

  1. 四川大学制造科学与工程学院
  • 发布日期:2010-07-05

High-efficiency Hydraulic Torque-converting Transmission System

LI Hua;YAO Jin;ZHAO Shijia   

  1. School of Manufacturing Science and Engineering, Sichuan University
  • Published:2010-07-05

摘要: 针对液力变矩器传动效率较低的问题,提出一种具有自适应性的高效率液力变矩传动系统。在原动机和液力变矩器间增加磁粉离合器,实现传动系统由单流传动变为双流传动,使得当载荷增大传动效率下降时,原动机通过磁粉离合器向变速器的输入轴提供力矩,从而改变液力变矩器的转速比,使液力变矩器工作于高效点。给出磁粉离合器传递的力矩和传动系统效率的计算公式,为自适应性高效率液力变矩传动系统的设计提供理论基础。实例计算结果表明,所提出的高效液力变矩传动系统的传动效率能平均提高4.6%左右。

关键词: 传动系统, 磁粉离合器, 高效率, 液力变矩器, 粗糙峰接触, 精密H型气体轴承, 启动过程, 气体稀薄效应

Abstract: Aiming at the problem that the transmission efficiency of hydraulic torque converter changes according to the change in load, an adaptive high-efficiency hydraulic torque converting transmission system is put forward. A magnetic powder clutch is added between engine and hydraulic torque converter in order to change the transmission system from single-stream transmission to dual-stream transmission, so that the engine provides torque to the input shaft of gearbox via magnetic powder clutch when load increases and transmission efficiency drops, thereby changing the speed ratio of hydraulic torque converter and making it work at its maximum efficiency running point. The calculation formula of transmitted torque of magnetic powder clutch and efficiency of transmission system are given, which provides reference for design of adaptive high-efficiency hydraulic torque converting transmission system. The calculation result of an example shows that the transmission efficiency of high-efficiency hydraulic torque converting transmission system proposed can be increased by an average of around 4.6%.

Key words: High-efficiency, Hydraulic torque converter, Magnetic powder clutch, Transmission system, Air rarefaction, Asperity contact, Startup process, Precision H-type air bearing

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