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oil pressure gauge fluctuates from 0 to 80
1. Under normal circumstances, it is normal for the oil pressure to be between 150 and 350kPa. When the pressure of the engine oil is at a normal value, it can ensure that the oil is delivered to various parts inside the engine to lubricate the inside of the engine.
2. Gasoline engine oil pressure is usually maintained at 0.2-0.5MPa. In the common speed range of the engine, the oil pressure of the gasoline engine is usually kept at 0.2-0.5MPa, and the oil pressure of the diesel engine is usually kept at 0.290-0.59MPa. When the engine is working, normal oil pressure must be maintained.
3. When the engine is working, the oil pressure is generally kept within the pressure range of 150-350kPa. If the pressure value indicated by the oil pressure gauge is less than 98kPa, it can be considered that the oil pressure is too low, and the engine should be stopped immediately for inspection, otherwise it is easy to cause excessive wear of parts, and even major mechanical failures such as burning pads and shafts.
4. The normal oil pressure range of gasoline engine is 200kPa～500kPa, and the normal oil pressure range of diesel engine is 600kPa～1000kPa. When the engine is running at idle speed, the oil pressure should not be lower than 100kPa. If the engine oil pressure is too high or too low, it is an abnormal situation, and the cause must be further investigated.
5. The oil pressure should not be lower than 0.1mpa. If the oil pressure is too low, the oil pressure is normal. When the engine is working, the oil pressure is generally kept within the working pressure range of 150 ~ 350 kPa. If the pressure value indicated by the oil pressure gauge is less than 98kPa, it can be considered that the oil pressure is too low, and the engine should be stopped immediately for inspection, otherwise it will easily cause excessive wear of parts, and even major mechanical failures such as "burning pads and shafts". The reasons for low oil pressure are as follows:
Insufficient oil level:
If the amount of engine oil is insufficient, the pump oil volume of the oil pump will be reduced or the pump will not be filled with oil due to air entering, so that the oil pressure will drop, and the crankshaft and bearings, cylinder liners and pistons will all aggravate wear due to poor lubrication.
Engine temperature too high:
If the engine cooling system has too much scale, poor heat dissipation, long-term overload operation or too late oil supply time of the fuel injection pump, etc., the engine will overheat, accelerate the aging, deterioration and thinning of the oil, leak from the matching gaps, and reduce the pressure .
Oil bypass valve failure:
The oil bypass valve is to maintain the normal oil pressure of the main oil passage. If the pressure regulating spring is softened or improperly adjusted, the matching surface between the valve seat and the steel ball is worn or stuck and the seal is not tight, the oil pressure will drop.
Oil filter clogged:
When the oil filter is clogged and unable to circulate, the bypass valve located on its base is opened, and the oil directly enters the main oil passage without being filtered. If the opening pressure of the bypass valve is set too high, when the oil filter is blocked, it cannot be opened in time, the pressure of the oil pump will rise, the internal leakage will increase, and the oil pressure will drop.
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