Piston pump surface cut with a chute, and through the radial hole, the axial hole connected to the top, the purpose is to change the cycle of fuel supply; plunger sleeve system has into and back to the oil hole, and the pump on the body of low pressure The oil chamber is communicated with each other. After the plunger sleeve is installed on the pump body, the positioning screw should be used for positioning. Plunger head chute location, change the amount of fuel supply is also different. Piston pump out of the valve and the valve seat is a pair of precision parts, can not be swapped after grinding, with the gap of 0.01mm. Outlet valve is a one-way valve, under the action of spring pressure, the upper conical surface of the valve is tightly matched with the valve seat. Its function is to cut off the high pressure oil pipe from the upper cavity of the plunger to prevent the oil in the high pressure pipe Inverted into the injection pump. The lower part of the oil valve is cross-section, both to guide, but also through the diesel. Under the conical surface of the valve, there is a small cylindrical surface, called the vacuum ring, whose function is to quickly reduce the pressure of oil in the high-pressure tubing when the fuel supply ends, so as to avoid dripping oil at the orifice. When the ring falls into the valve seat, the upper volume increases rapidly, the pressure decreases rapidly, and the injection is stopped rapidly. Vickers plunger head cylindrical surface cut with a chute, and through the radial hole, the axial hole and the top of the same, the purpose is to change the circulation of fuel supply; Vickers plunger system is made into, back to the oil Holes, are connected to the pump on the body of low pressure oil chamber, plunger set into the pump body, the positioning screw positioning. Vickers plunger head chute position is different, change the amount of fuel supply method is also different. Outlet valve is a one-way valve, under the action of spring pressure, the upper conical surface of the valve is tightly matched with the valve seat. Its function is to cut off the high pressure oil pipe from the upper cavity of the plunger to prevent the oil in the high pressure pipe Inverted into the injection pump. The lower part of the oil valve is cross-section, both to guide, but also through the diesel. Under the conical surface of the valve, there is a small cylindrical surface, called the vacuum ring, whose function is to quickly reduce the pressure of oil in the high-pressure tubing when the fuel supply ends, so as to avoid dripping oil at the orifice. When the ring falls into the valve seat, the upper volume increases rapidly, the pressure decreases rapidly, and the injection is stopped rapidly.
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