The pressure limiting valve can limit the oil pressure in the circulating oil circuit, which can prevent too much engine oil from entering the combustion chamber, which will increase the engine oil consumption and cause the engine to work abnormally. At the same time, in order to avoid the oil pressure being too high, causing the pipeline and filter to burst.
The structure of the pressure limiting valve is a one-way valve that controls the oil pressure by the pressure of the spring. When the oil pressure in the oil circuit is greater than the spring pressure, the valve ball opens, and part of the oil flows back to the oil pan, so the oil circuit is depressurized. It is generally installed on the oil pump or the main oil passage.
The above is the role of the pressure limiting valve in the lubrication system. After reading the above content, do you feel that the pressure limiting valve plays an irreplaceable role in the lubrication system?