First, when the column cold rotates during the work, the oil supply will also start to produce time does not change, and if the oil supply time is gone, then it will change due to the change of the position of the bevel edge of the vane pump against the various oil return holes in the vane pump sleeve. With the rotation Angle of the vane pump is different, then the effective stroke of the vane pump at this time will also change, and it will also change because of the different amount of oil supply.
Second, when the vane pump is working, the rotation Angle of the no oil supply level will be larger, then the upper end of the vane pump and the distance to the hypotenuse of the oil hole that opens the vane pump sleeve will be larger, if the oil supply will gradually become larger, if the vane pump in the rotation Angle will be relatively small, if the oil cut-off start time is relatively early, Then the supply of oil will be relatively small. When the diesel engine is used, the oil must be cut off when the engine is stopped, so the various longitudinal grooves on the engine can be directly turned to the oil return hole on the vane pump sleeve.
Third, at this time, during the operation of the entire vane pump, the fuel inside the vane pump sleeve will also flow back to the oil passage through the longitudinal groove and the oil return hole, and there will be no oil pressure process, so it can be said that the oil supply will generally be equal to zero. When the vane pump rotates, the oil amount can be adjusted by changing the end point of the oil supply, so this method can generally be called the end point adjustment method of the oil supply.
Four, the various fuel supply of the Verges vane pump should also meet the needs of the diesel engine in a variety of different situations, that is, the oil supply will continue to increase when the load is large: the oil supply will continue to decrease when the negative tea is small. At the same time, it can also ensure that the amount of oil supplied to each cylinder should also be equal.
Fifth, according to the requirements of the machine, then the oil pump must ensure that the oil supply on each cylinder is the same at the beginning of the moment, that is, the oil on the various cylinders is consistent in advance, which can also ensure that the oil supply method continues for the same time, and it needs to start quickly when the oil is supplied, and it should be quick and neat when the oil is stopped, which can avoid the phenomenon of dripping oil. The oil pump must be able to provide enough fuel to the injector at a good pressure, so as to ensure a good atomization phenomenon.
