Generator engine oil pressure is too low, how to find fault source?

2017-04-07 13:47:47   
Low oil pressure is one of the common fault of generator, with fault of rapid screening method is helpful to y
Low oil pressure is one of the common fault of generator, with fault of rapid screening method is helpful to you in a timely manner to solve problems, the stars below small make up to teach everyone how to accurately find the root cause generator engine oil pressure is too large.
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(1) check the oil pressure display device
 
Displacement method is used to check, that is, replace engine oil pressure gauge or sensor, respectively.
If the oil pressure display is normal, after displacement oil pressure display device is faulty.
If the oil pressure display is normal, the oil pressure is reduced, the fault in the lubrication part, should judge according to the following method.
 
Judging from the oil temperature
 
If oil at low temperature, low oil pressure, when the temperature after the oil pressure is normal, that is due to too thick oil and engine oil channel not free.
Although such as oil set filter impurities clogging existing input affected by a certain, oil pressure also reduced, but still within the prescribed scope, the timing when the oil viscosity is too large oil set filter will further congestion, so that the oil pressure drops again and below the specified value, low oil pressure;
Some diesel engine oil pressure display device sensors located in lubricating oil at the end of the road, through the filter is difficult, the oil pressure is reduced.
When is lower than the specified value, low oil pressure.
Then, should further find out the reason of engine oil too thick (whether oil brand selection and season is suitable for the oil, metamorphic, etc.) and oil duct obstruction (such as filter, filter, air cooled radiator, etc.).
After find out, should be ruled out.
 
If high oil temperature time oil pressure drop, the oil viscosity is too small, or large friction parts fit clearance or leak.
Should be to find out the reason that the viscosity decreases (such as engine oil brand chooses inappropriate, the poor quality of the oil, viscosity temperature stability is poor, it is possible that the diesel mixed with oil and dilute the oil), observe whether there is a leak, or the engine use longer and pressure lubrication of parts (such as the crankshaft and bearing, and even the bar diameter of axle and bearing) gap is too big, should, in turn, after find out, be targeted treatment.
 
(2) according to the investment of equipment life
 
If oil pressure is too low, the fault occurred in the running-in period, most of the suspected to be a part of metal or the sand of casting and acrobatics blocking filter, or pipe bending through oil, flat or oil leakage of the improper assembly place (such as bearing fit clearance is too large, pipe joint or joint plane sealed), etc.
Should be easy to difficult to find out the reason and be ruled out.


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