First, outline
      The assignment type injection pump abbreviation dispensing pump, is one kind of more novel diesel engine oil fuel injecting pump. Compares with in-line plunger injection pump, the dispensing pump only uses a pair of plunger matching part to be possible to approach 2~6 cylinders feed. Its structure is simple, the components are few, the volume is small, the quality is light, especially qualify in small high speed diesel engine use. Therefore, overseas in the compact car, specially on the passenger vehicle obtained the widespread application.
      The dispensing pump may divide into the rotor type dispensing pump and the single plunger dispensing pump according to its structural style. In the mid-20th century British CAV Corporation has developed the DPA rotor type dispensing pump, in the 60s our country also once imitated the volume production, matches the domestically produced abundant harvest tractor. Because this kind of rotor type dispensing pump performance still had some flaws, the late 70s was the stop production. In the mid-70s, the German Abundant World Company developed the VE single plunger type dispensing pump (as shown in Figure 1). Its structure is simple, the performance is perfect, the volume is small, the quality is light, receives the world diesel engine manufacture manufacturer very quickly the favor, has obtained the widespread promotion, becomes in the world the production lot most multi-cylinder injection pumps. Afterward, the Japanese Light display Company and Jake the Syre company introduces the German Abundant World Company's patented technology to produce the VE dispensing pump successively. Compares with in-line plunger injection pump, the VE dispensing pump has many merits: