Abstract: To address the shortcomings of existing engine test stands in terms of rapid positioning for multiple engine models, ease of operation, and operation duration, this paper has designed a gasoline engine test stand based on a convenient positioning function. By designing a mobile cart structure with a "coarse adjustment+fine adjustment" dual-dimensional adjustment mechanism, 90% of the installation work is transferred to be completed outside the test stand in advance. Meanwhile, compared with the traditional installation method within the test stand, the structure composition, working principle, and performance advantages of this system are systematically analyzed. Experimental verification results show that this test stand has smaller centering deviations for different engine models, shorter installation times, and better bolt torque stability, with overall performance superior to that of traditional test stands. This achievement enables precise positioning and convenient installation of different engines, significantly improving experimental efficiency and teaching quality. It has good application prospects in testing, teaching and other fields.

Key words: engine; convenient positioning function; test stand design

摘要： 为解决现有发动机台架在多型号发动机快速定位、操作便捷性及作业时长等方面的不 足，文章设计了一种基于便捷定位功能的汽油发动机台架。通过设计具有“粗调+微调”双维 度调节机制的移动小车结构，将 90%的安装工作转移至台架外提前完成，同时对比传统测试 台架内安装方式，系统分析了其结构组成、工作原理及性能优势。实验验证结果显示，该台 架在适配不同型号发动机时，对中偏差更小、安装时间更短，且螺栓扭矩稳定性更优，整体 性能优于传统台架。这一成果实现了不同发动机的精准定位与便捷安装，能显著提升实验效 率和教学质量，在测试、教学等领域具有良好的应用前景。

关键词: 发动机；便捷定位功能；台架设计