例1一辆累计行驶4万km的陕汽奥龙重型自卸汽车(采用潍柴国Ⅲ发动机),满载时爬坡动力不足。使用潍柴专用故障检测仪进行检测,读取了发动机进气压力、进气温度、共轨油压和喷油压力等数据,发现在高速运转时发动机的共轨油压低于预设的共轨油压值(正常情况下,发动机的实际共轨压力要略高于预设值),由此可以 Example 1 A Shaanxi Autobahn Dump Truck (using Weichai Gull-Ⅲ engine) traveling 40,000 km in total has insufficient power to climb at full load. Weichai special fault detector to detect, read the engine intake pressure, intake air temperature, common rail fuel pressure and fuel injection pressure and other data found in the high-speed operation of the common rail oil pressure is lower than the default total Rail hydraulic pressure (under normal circumstances, the actual engine pressure of the common rail to be slightly higher than the default value), which can