Abstract: To enhance the level of experimental teaching in the field of internal combustion engines and deepen students' understanding of diesel engine emission after-treatment technology and SCR application characteristics in high-latitude regions, this paper presents the development of experimental teaching equipment focused on low-temperature thawing phenomena and control strategies for diesel engine SCR systems. The equipment integrates hardware, software, and intelligent algorithms for practical application. It consists of an SCR system installation bench and a mobile heat source control console, equipped with a controllable vibration device to simulate actual vehicle operating conditions, employing a computer to simulate vehicle ECU control for thawing strategies, and is closely integrated with simulation software to ensure authenticity, visibility, and expandability of the experiments. During the teaching process, students operate the equipment to observe urea thawing patterns under various coolant flow rates and heater types, and use data analysis software for visualization. This approach deepens their understanding of SCR system operation modes and urea phase change and injection processes at low temperatures, while equipping them with basic experimental operations and data processing methods in the field of internal combustion engines, thereby comprehensively improving their practical skills and theoretical knowledge.