working principle
1. Preparing the oil pressure process: As the camshaft of the fuel injection pump rotates, the eccentric wheel pushes the roller, push rod and piston outwards. The oil pressure of the pump chamber I increases due to the decrease in volume. The oil inlet valve is closed and the oil pressure is opened. Oil valve, diesel will flow from the pump chamber I to the pump chamber II through the oil outlet valve.
2. Oil suction and pressure stroke: When the convex part of the eccentric wheel turns away from the roller, the piston moves inside under the action of the spring, the oil pressure in the pump chamber II increases, the oil outlet valve is closed, and the diesel flows to the oil filter through the oil passage. . At this time, the volume of the pump chamber I increases, the pressure drops, the oil inlet valve 3 is sucked open, and the diesel fuel flows into the pump chamber I through the oil inlet and the oil inlet valve.
3. Automatic adjustment of oil delivery: the amount of oil delivery depends on the stroke of the piston; the size of the oil delivery pressure depends on the tension of the piston spring. When the stroke of the piston is equal to the eccentricity of the eccentric wheel, the oil delivery is the largest. When the amount of oil required by the fuel injection pump decreases, the oil pressure in the pump chamber II will increase accordingly, and there will be an idle stroke between the push rod and the piston, that is, the effective stroke of the piston is reduced, and the amount of oil output is reduced. When the fuel consumption increases, the effective stroke increases. In this way, the automatic adjustment of oil delivery volume and oil delivery pressure is realized.
4. Hand pump oil: Pull the hand oil pump piston to suck and press oil.
classification
kcb oil transfer pump, 2CY oil transfer pump, KCG oil transfer pump, 2CG oil transfer pump, RCB oil transfer pump, YCB oil transfer pump.
