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Governor troubleshooting
The governor is generally composed of a flying block assembly, a governor spring and an operating mechanism. It is based on the load change of the diesel engine and automatically adjusts the fuel supply of the fuel injection pump so as to ensure the stable operation of the diesel engine under various operating conditions. The diesel engine of vehicles mostly uses mechanical centrifugal two-pole governor, which can automatically control the maximum rated speed (2800r/min) and idle stable speed of the engine. When the engine is operating in the speed range between idle speed and rated speed, the two-pole governor does not regulate, but the engine speed is changed by the driver's control of the fuel quantity. In use, the speed regulation is often caused by improper speed control to make it control. The speed does not match the actual situation; the moving parts become loose due to wear, the governor spring loses its function, or the moving parts corrode the card issuer and the governor loses its function or the moving parts are rusted, the card is issued, and the governor has too much oil and the viscosity is too large. Oil does not meet the requirements) etc. When overhauling, the governor should be specially adjusted on the fuel injection pump test bench to replace worn out components; on-vehicle debugging, if the throttle is quickly retracted, the speed will be reduced or the governor will fail to work. , Should check the high speed and idle speed spring is broken, if necessary, replace the new ones, and adjust and pass the test bench. If there is a shortage of lubricating oil, it should be supplemented; if the viscosity is too large, the compliant oil should be replaced.