加强铁路机车车辆轮缘与钢轨头内侧之间的润滑以减少磨擦和磨耗，是一项行之有效的措施，但在高速、重载条件下，对轮缘、轨头的外型要求很高，必须研究润滑新技术，以解决该难题。北美铁道协会（AAR）研制了一种经美国FAST环行线多年试验、已在许多铁路使用的微机控制自动机车 It is an effective measure to strengthen the lubrication between the wheel rim and the inner side of the rail head to reduce the friction and wear. However, under high-speed and heavy-load conditions, the appearance of the rim and the rail head is very demanding , We must study the lubrication of new technologies to solve the problem. The North American Railroad Association (AAR) has developed a microcomputer controlled automatic locomotive that has been used on many railways for many years by the FAST Central Loop in the United States