手动变速箱油摩擦特性评定试验台研制

为了评定手动变速箱油摩擦特性对同步器性能的影响，研制了手动变速箱油摩擦特性评定试验台。阐述了试验台的总体结构与工作原理，设计了试验台的关键子系统，包括动力与传动子系统、换挡子系统、运动控制与数据采集子系统等。在研制的试验台上，对手动变速箱的换挡特性和工况参数进行了分析与测量，对试验台的整体性能进行了测试与评估。结果表明：试验台能够模拟变速箱同步器的实际运行工况，试验结果具有良好的重复性和区分性，能够评定出手动变速箱油的摩擦特性。

Development of Test-bed Used for Evaluating Friction Characteristics of Manual Transmission Lubricant

The lubricant friction characteristic is of great importance to the manual transmission synchronizer. In order to evaluate this influence, a test-bed is established. The composition and working principle of test-bed are described. The key subsystems include driving force and transmission subsystem, shift subsystem, motion control subsystem and data acquisition subsystem. After the test-bed is established, the characteristic curves of transmission shift and the adjustable scope of working condition parameters have been analyzed and measured, as well as performance evaluation of the test-bed. The results indicate that the test-bed can simulate the real working condition of transmission synchronizer, and the experimental results are of favorable repeatability and differentiation. Furthermore, the friction characteristics of manual transmission lubricant could be evaluated.