High Quality New Diesel Fuel Injection Pump Head Rotor 096400-1320 VE Head Rotor for Fuel Pump Engine Spare

The flat cam plate of the rotor distribution pump is evenly distributed with four cam profiles spaced 90° apart from each other; four rollers are installed in the roller seat, also spaced 90° apart from each other. There are four diesel inlet grooves on the top of the plunger and a diesel outlet groove on the circumference. The corresponding distribution sleeve has one diesel inlet hole and four diesel outlet holes. Every time the diesel pump drive shaft rotates 90°, under the cooperation of the cam and the plunger spring, the plunger is pulled and pushed once to the left and right while rotating 90°, and the plunger completes the diesel supply, diesel pressure and distribution. process. Structural principle of rotor distribution pump. When the highest point of the plane cam is in contact with the roller, the plunger is at the top dead center, the plane cam plate continues to rotate, the roller slides down along the descending section of the plane cam, the plunger descends and rotates at the same time, and its diesel inlet groove is in contact with the diesel inlet hole on the distribution sleeve. At this time, the diesel outlet groove on the plunger has rotated and closed through the diesel outlet hole on the distribution sleeve. The diesel fuel enters the plunger cavity through the solenoid valve and the diesel inlet hole on the distribution sleeve. When the plunger reaches bottom dead center and the diesel feeding process ends, the plane cam has rotated to the lowest point and is in contact with the roller. During the fuel injection process and at the end of the fuel injection, when the plane cam plate continues to rotate, the roller moves along the rising section of the cam.