High Quality Diesel Head Rotor 146403-4920 VE Pump Parts Rotor Head Spare Part

To achieve a complete diesel supply process, a high-pressure diesel pump requires the cooperation of various components in the diesel pump. The main components of the high-pressure diesel pump unit include the diesel inlet valve, the diesel outlet valve, the plunger coupling and the volume of each component. During the cam advancement stage, the cam drives the plunger upward to pressurize the fuel in the plunger cavity. When the fuel pressurization rate is greater than the fuel flowing out from the fuel inlet valve, the pressure in the plunger cavity continues to increase, reaching After a certain pressure, the fuel inlet valve closes. At this time, the plunger cavity forms a sealed volume. The cam pressurizes the fuel in the sealed volume. The pressure rises rapidly. When the pressure in the plunger cavity reaches the level, the diesel outlet valve opens. Pressure, the pump unit pumps diesel into the pressure accumulation chamber. After preliminary pressure stabilization through the pressure accumulation chamber, it supplies diesel to the high-pressure common rail pipe. During the cam return stage, under the action of the plunger spring, the plunger moves downward with the cam, the diesel outlet valve closes, and the pressure in the plunger chamber drops rapidly. When the pressure difference between the two ends reaches the opening pressure of the diesel inlet valve, the diesel inlet valve Open, the fuel sucked into the low-pressure diesel circuit enters the plunger chamber. Changes in the structural parameters of the diesel inlet valve, diesel outlet valve, plunger couple and other components during the entire process will have an impact on the diesel supply process. Therefore, in order to continue to further study the impact of the structural parameters of the high-pressure diesel pump on the diesel supply performance, this summary will focus on the diesel inlet valve component, the diesel outlet valve component, the plunger coupling and the volume of each component are studied. According to the structural parameters of each component, the influence of value changes on the diesel supply characteristics of the high-pressure diesel pump is studied, and its mechanism of action is revealed.