The role of small tanker spill

For the analysis of the various parts of the small fuel management systems, thereby enhancing the understanding of the small tanker. Introduced the case of a small tanker vane pump and oil pump, etc. It should be noted in the previous article. Works as well as the analysis of fault diagnosis now we look at the role of the relief valve in the pump and its main role.
Relief role is:
High pressure relief valve within the pump chamber of a door leading to the low pressure chamber, which is mainly played the role of protection and limit the maximum pressure of the hydraulic system of the fuel monitoring system, and can adjust the output of tanker traffic.
Relief works:
When the motor is started, the oil pump, pressure oil from the oil pump flow positive zone and oil separator P relief valve port open at this time if the oil gun, pressure oil to the oil separator, pressure relief valve is closed, the pump the positive pressure and negative pressure zone pass each other; when the oil gun is closed, the pressure in the hydraulic system rises rapidly, the oil pressure relief valve overcoming the force of the spring, the spool shifted to the right, high pressure oil through the relief valve P and O port flow to the pump suction area, to achieve a petrol pump cycle.
Increased spring force, can increase the maximum pressure of the hydraulic system. Without relief, when the hydraulic system pressure is higher than a certain value. System most book weak links will be destroyed.
When the pressure relief valve adjustment screw clockwise twist, the pressure required to open the relief valve increases, most or all of the flow of oil and gas separator. Output increased tanker traffic; when the adjusting screw counterclockwise twist, the pressure required to open the relief valve is reduced, some oil through the relief valve back to the pump suction area, external output flow decreases.