From: Taian Haishu Machinery Co.,Ltd. Updatetime: 2016-06-01 10:40:32 Hits:
High pressure common rail pipe parsing - diesel engine test-bed technology
High power tube is a forging steel, fuel rail inside diameter of 10 mm, each cylinder injector through their respective pipe connected to the fuel rail.The effect of common rail pipe can be understood as two points:
1 accumulation and distribution of high pressure fuel;
2 reduce pressure fluctuations: intermittent oil supply of fluctuation in the plunger;A short-lived jet injector produce fluctuations;
Pressure relief valve of the high pressure common rail pipe is used when the pressure is beyond limit, relief valve by opening the overflow mouth to limit the pressure in the fuel rail, through vertebral shape of the head and body of plunger seal remain closed, under the normal pressure, the spring makes the plunger pressure on seal seat tightly, keep the common rail pipe close;When pressure exceeds the system maximum pressure, the spring is compressed, plunger is jacking, fuel from the fuel rail overflow, fuel rail pressure drop.
Common rail between each cylinder to limited flow, mainly in order to guarantee the safety of the engine, made from common rail between the nozzle flow is restricted, thus protecting motor overloaded, this is when a cylinder solenoid valve failure, ensure that the engine from being damaged from the mechanical device.
