Structure of mounting fuel injection valve to fuel distribution pipe

摘要

In a structure of mounting a fuel injection valve, an annular connecting groove 12 is defined in an outer peripheral surface of an intermediate portion of a fuel injection valve I which has a fuel inlet portion 6 inserted in a fuel supply port 16 in a fuel distribution pipe D, and a connecting flange 17 is formed in the fuel supply port 16 and aligned axially with the connecting groove 12. A collar portion 22 and a locking groove 21 are engaged with the connecting groove 12 and the connecting flange 17, respectively, and are provided in a connecting member 20 for resiliently clamping the fuel injection valve I and the fuel supply port 16 from opposite outsides. A positioning bore 18 is provided in the connecting flange 17, and a positioning projection 13 is formed on the fuel injection valve I to be brought into engagement in the positioning bore 18 simultaneously with the insertion of the fuel inlet portion 6 into the fuel supply port 16. Thus, it is possible to easily connect the fuel injection valve to the fuel distribution pipe, while enhancing the accuracy of positioning of the fuel injection valve in a rotating direction on the fuel distribution pipe.