| 摘要 |
PROBLEM TO BE SOLVED: To realize an accumulator type fuel injection device capable of restricting dropping of fuel pressure just after injection at an injector without accompanying any deterioration in its assembling work or producing any risk of fuel leakage.SOLUTION: This invention relates to an accumulator type fuel injection device constituted in such a way that injectors 1 are connected to each other by a fuel injection pipe through a coupling connector 2 so as to cause fuel supply systems to be communicated to each other, and two coupling connectors 2 at their both ends in their arrangement direction and a common rail are connected by the fuel injection pipe to enable high pressure fuel to be supplied through two systems. Each of relative connecting ends 7, 8 for use in connecting the injectors 1 with the coupling connectors 2 is formed with male threads 9, 10 of different pitches, and the connecting end 7 of the injector 1 and the connecting end 8 of the coupling connector 2 are fastened by connector nuts 13 each of which is formed at each of both inner peripheral surfaces in an axial direction with two kinds of female threads 11, 12 having different pitches so as to enable them to be engaged in thread with each of the male threads 9, 10.SELECTED DRAWING: Figure 1 |
