Compares with in line pump, the VE dispensing pump components' working accuracy request is high, moreover is strict to the material material quality and the heat treatment request, is also harsher to the diesel oil cleanliness's request. Satisfies these conditions to be able to guarantee injection pump's normal work and the proper service life. VE dispensing pump's basic strokes specification as shown in Table 2, its serial number method and the meaning showed that as shown in Figure 2.
     Second, basic structure and principle of work
     1. basic structure and function
     VE dispensing pump blow system's oil duct as shown in Figure 3. Before the diesel engine starts, uses the manual pump oil pumping first, removes in the diesel oil pipeline's air through roof panel's on overflow valve. When the diesel engine moves, drives dispensing pump's drive shaft by the crank gear. Its front end gleitbretter type feeding pump extracts the diesel oil from the fuel tank, passes through the diesel oil filter and the oil-water separator, after filtering out in the diesel oil the impurity and the moisture, enters the feeding pump, causes diesel oil pressure lifting. Then enters in the dispensing pump pump body, enters the plunger cavity again after the solenoid valve. When plunger upward movement, the compression diesel oil produces the high pressure, after plunger's in oil lead and the oil hole, assigns to the pump body on the corresponding cylinder's oil lead, again after the delivery valve, the high-pressure oil pipe and the spray hole gushes in corresponding the cylinder. In the pump body the unnecessary diesel oil's returns to the fuel tank from roof panel overflow valve. The diesel oil so circulatory flow both may carry off the quantity of heat which in the oil duct the air bubble and the components friction produce, and may lubricate the individual movement components. Meanwhile, in the pump body diesel oil pressure control, changes the advance angle of fuel correspondingly ahead of time.