2. feed and assignment basic principle
      The VE assignment pump plunger shaft, the distributor barrel (i.e. column sleeve) and plane cam drum's relative position as shown in Figure 9. First introduced that the cam and the plunger progress, the fuel tank phase.
      Speaking of four cylinder diesel engines, on dispensing pump's plane cam drum has four section of cam form lines, is separated mutually 90��; Rolls the wheel seat Chinese dress to have four hoops, is separated is also mutually 90��. The plunger peak has four oil-feed tanks, in the circumference has a fuel tank, in the corresponding distributor barrel has an oil in and four oil holes. Oil pump drive shaft each extension 90��, in the cam and under plunger spring's coordinating role, pulls pushes about the plunger reciprocal motion time at the same time to rotate 90��, the plunger correspondingly completes one time enters the oil, the pressure oil and the assignment feed process. Such feed process is redundant four times, separately to four cylinder blows. In a diesel engine's operating cycle, assigns the pump driving shaft to revolve for one week.
      Speaking of six cylinder diesel engines, on dispensing pump's plane cam drum has the cam form line, is separated mutually 60��; Rolls the wheel seat Chinese dress to have four hoops, but is separated mutually respectively be 60�� and 120��. The plunger peak has six oil-feed tanks, but in the circumference still only then a fuel tank, in the corresponding distributor barrel also had an oil in and six oil holes. Oil pump drive shaft each extension 60��, the plunger has completed one time enters the oil, the pressure oil and the assignment feed process. Such feed process is redundant six times, assigns the pump driving shaft to revolve for one week.