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液力变矩器性能试验台是进行汽车液力变矩器常规性能试验及动态特性试验的专用设备 ,是汽车液力变矩器开发、设计、产品测试的必备设备。在进行变矩器的性能试验特别是零速工况试验时 ,试验输入的功率大部分转化为热量 ,使液力变矩器的介质油升温很快 ,影响试验精度。为了保证油温在试验规定的范围内 ,必须建立油温的自动控制系统。本文论述了自行设计的油温控制系统的组成结构、温度调节方案及提高系统反应速度的方法。试验结果表明 :该系统具有反应速度快、控制精度高等特点 ,温度控制精度在± 2℃以内 ,保障了汽车液力变矩器性能试验精度
Hydraulic Torque Converter Performance Test Stand is a special equipment for routine performance test and dynamic characteristic test of automobile hydraulic torque converter. It is an essential equipment for the development, design and product testing of hydraulic torque converter. In the torque converter performance tests, especially zero-speed condition test, most of the test input power into heat, so that the torque converter fluid warming fast, affect the test accuracy. In order to ensure the oil temperature within the test range, you must establish an automatic control system of oil temperature. This article discusses the self-designed oil temperature control system, the composition of the structure, temperature control programs and improve system response speed. The experimental results show that the system has the advantages of fast response and high control precision. The temperature control accuracy is within ± 2 ℃, which guarantees the performance test precision of the automobile torque converter