虽然喷射式高压燃油泵现在被普遍采用，但是它仍存在着一些缺点，如：·对保证每副柱塞组在每循环内燃油供给的质量存在一定的复杂性；·每循环的供油量曲线形状不够理想；·在农机修理厂一般缺少较复杂的贵重的燃油泵试验台，因此不能修理燃油装置或者修理相当困难。观介绍一 Although jet high pressure fuel pumps are now commonly used, there are a number of drawbacks, such as: • There is some complexity in guaranteeing the quality of the fuel supply per cycle for each pair of plungers; • The amount of fuel supplied per cycle The shape of the curve is less than ideal. • In agricultural mechanic workshops, the more complex and expensive fuel pump test benches are generally lacking. Therefore, it is quite difficult to repair the fuel system or repair it. Introduction One