It is very important that the diesel generators are in a stable working form, otherwise the generator will not be able to generate electricity normally. We can use these methods to infer whether the generator's cylinder department is normal.
(1) Listening method: Listen to the sound of each cylinder explosion with a stethoscope or a metal rod, close to the department of the oil body. The normal sound is very similar to the metal tapping "Dangdang" sound.
If only the "嗬嗬" continuous unfavorable sound, then the cylinder is not enough oil supply or fire does not hurry, if the knocking sound is too loud, then the cylinder oil supply is too large or the fuel is light early.
(2) Color observation method:
When the diesel engine is working normally, the color of the exhaust gas is light gray, and the load is slightly deeper. If it is black, then the combustion of combustible gas is not enough. Rows of blue smoke, express the lubricating oil in the cylinder for incineration. When the white smoke is discharged, there is water in the diesel engine, and the flammable gas is not burned and white smoke is also emitted. The exhaust pipe continuously excludes extra smoke, so a small amount of cylinders work right and wrong.
(3) Temperature sensing method:
After the ignition of the diesel engine, the temperature of each cylinder exhaust pipe can be determined by hand, and the working mode of each cylinder can be discriminated. If the temperature of the exhaust pipe of each cylinder is higher than the other cylinders, the fuel supply of the cylinder is high; if the temperature is low, the cylinders supply less oil, or do not spray oil, or do not burn or burn without burning.
(4) Pulse method:
The high-pressure oil pipe is pinched by hand, and the pulsation state when the fuel is injected is small, the pulsation is small, the sound of the explosion is weak, and the oil supply of the cylinder with a low temperature is small. The sound of the explosion is abnormal and the temperature is high. The fuel pressure of the injector is falling, the atomization of the fuel is poor, or it is impossible to catch the fire and burn it. The pulsation is large, the sound of the explosion is strong, and the cylinder with high temperature is the oil supply amount. The sound of the explosion is weak and the temperature is low for the injector hole or the needle valve to be stuck.
(5) Oil cut method:
In order to accurately identify which cylinder has problems, the high pressure oil pipe can be cut off one by one to the injector oil circuit to check the diesel engine labor condition change. When cutting a cylinder oil circuit, if there is no change in the engine speed and sound base, then the cylinder is normal. If the cylinder is interrupted and black smoke is exhausted, when the oil circuit of a certain cylinder is cut, the obstacle phenomenon dissipates, and there is a real obstacle in the performance of this cylinder.
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