What are the abnormalities before the diesel generator set is abnormally turned off?
Author: Suzhou BSN Power Technology Co., Ltd. Publish Time：2022/12/10 21:48:06
when the diesel generator set is in use, the phenomenon of sudden flame-out is black smoke and white smoke, so what is the cause of the problem? Generator set manufacturers for everyone to analyze
black smoke
from the exhaust pipe when the diesel engine is overloaded, its speed drops significantly, and at this moment the excess diesel fuel in the spray cylinder will emit black smoke due to insufficient incineration, and when it is serious, it will actively turn off the fire. At this moment, if you can turn the crankshaft, you can restart it, but pay attention to reduce the load before putting it into operation.
from > exhaust pipe if there is water in the diesel and white smoke from the exhaust pipe, the oil tap should be opened to open the fuel tank and drain the faucet, and the water should be drained before starting. If white smoke is still emanating, the gasket may have been washed away. If the cooling water enters the incineration chamber, check whether there is water in the oil, and replace the cylinder gasket and oil if necessary. When the temperature is too low in winter, white smoke is emitted after the diesel engine is started, and if the load is increased immediately, it is simple to turn off.
smooth maintenance of equipment we must not ignore, in the hot season, try to choose oil with a longer viscosity, in the cold season, you can use thinner oil. Smooth reasonably.
When the diesel generator set shows unstable speed, white smoke from the exhaust pipe, and black smoke from the exhaust pipe, the unit itself has issued a warning to the operator. The operator should catch these abnormal phenomena in time, pay attention to them, and sweep up the related problems in time to prevent the occurrence of abnormal flameout of the diesel generator set.
the speed is unstable and gradually stalls
should check whether the tank has run out of diesel fuel, or whether the vent hole in the tank cap is blocked, which will cause a vacuum in the tank and the diesel fuel supply will not be smooth. In addition to this, you should also check for air or moisture in the fuel system. The throttle can be placed in the neutral position and the crankshaft can be rotated, if the fuel injection sound is not heard, the air enters the fuel low-pressure system, should check whether the oil pipe and each joint are damaged or leaked, and then start after exhausting the air, if the load and speed is unstable after starting, it may be that the oil circuit is blocked or the diesel is dirty, and the oil circuit will be blocked in winter due to water freezing in the oil. If you can hear the fuel injection sound, it may be a problem with the gas distribution mechanism, you should check whether the valve spring and lock tab have fallen, whether the valve spring is broken, whether the valve pusher is normal, whether the valve adjustment bolt is loose, whether the valve and the guide or rocker arm and rocker arm shaft are sintered and lose their effect, and whether the valve and valve seat are ablated, if there is a problem in the above parts, it can be started again after sweeping, especially pay attention to prevent the valve from falling into the cylinder.
