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1台CAT320D型挖掘机因下雪路滑发生侧翻,侧翻时其所装配的C6.4型发动机自动熄火。对发动机进行大修后,发现其无法启动,排气管不冒烟。用ET(PC上用于检测发动机工作状态和参数的软件)测得启动转速为202r/min,燃油压力为3.1MPa,均正常,主、副正时传感器也正常。当打开点火开关时,ET显示喷油状态为禁止,借助工具驱动发动机转动时,喷油状态仍不能转变为开启。
One CAT320D excavator was rollover due to snow sliding, and the C6.4 engine fitted on the rollover side turned off automatically. Overhaul the engine and found it unable to start, the exhaust pipe does not smoke. Measured with ET (PC software for detecting engine operating conditions and parameters) starting speed of 202r / min, the fuel pressure of 3.1MPa, are normal, the main and secondary timing sensors are normal. When the ignition switch is turned on, ET shows the injection state is prohibited, with the help of the tool-driven engine rotation, the fuel injection state can not be turned on.