关键词: 发动机；便捷定位功能；台架设计

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