1问题的提出目前，全路已在各型铁道车辆上安装了轴温报警装置，以防上发生燃轴事故。近年来，有些机务部门也在开展机车走行部的轴温报警研究。但对同样危及列车安全正点运行的机车柴油机主轴瓦烧损的报警研究还处于空白阶段。为防止机车柴油机主轴瓦烧损而造成重大修程，并为 1 PROBLEM PROBLEM At present, the shaft has been installed on various types of rail vehicles, shaft temperature alarm device to prevent the occurrence of a combustion shaft accident. In recent years, some maintenance departments are also carrying out research on the axle temperature alarm of the locomotive running department. But for the same endanger the train safety punctual operation locomotive diesel engine bearing bush burn alarm research is still in the blank stage. In order to prevent locomotive diesel engine main bearing bush burn caused major repairs, and for