内燃机车水冷却系统诊断参数的选择

技术诊断已进入内燃机车日常保养和维修工作领域。选择诊断参数是技术诊断工作中的重要环节。用逻辑分析法选择内燃机车水冷却系统的诊断参数:建立逻辑模型图;区别工作原理图与逻辑模型图;确立功能组件、外部输入参数、内部输入参数、输出参数之间的函数关系;列出输出参数的逻辑方程式;编制故障函数表;提取诊断参数。

The Choice of Diagnostic Parameter of Diesel Locomotive Cooling Water System

Technical diagnosis has already entered the working domain of the diesel locomotive maintenance and repair.The choice of diagnostic parameter is an important link of the technical diagnosis. This paper deals with how to use the method of logical analysis to choose diagnostic parameters of diesel locomotive cooling water system; how to establish the logical model chart; how to differentiate the functional diagram from the logical model charti how to establish the functional relation among the block, the external input parameters, the internal input parameters and the output parameters; how to establish the logical equation of the output parameters; how to tabulate, the functional relation of the troubles; and how to extract the diagnostic parameters.