A fuel injection valve assembly and an assembling method therefor.

摘要

An assembling method of a fuel injection valve for fuel injection into an internal combustion engine, the fuel injection valve including a cylindrical valve body (5) having a fuel passage therein and a through-hole (5C) made in a direction of the axis thereof and a cylindrical nozzle (7) coupled to the valve body (5) and having a plurality of injection holes (8a, 8b) for dividing the fuel exited from the through-hole (5C) into a plurality of parts and for injecting the divided fuel parts into the engine. The assembling method comprises the steps of coupling the nozzle (7) to the valve body (5), rotating the valve body (5) realtive to the nozzle (7), and stopping the rotation of the valve body when the through-hole (5C) takes a desirable position relative to the injection holes (8a, 8b) and fixedly securing the nozzle (7) to the valve body (5). Preferably, an end portion (5d) of the valve body (5) is tapered conically and the nozzle (7) has at least one edge portion (7d) at its inside so that the edge portion (7d) comes into contact with the tapered portion (5d) when the nozzle (7) is coupled to the valve body (5), the edge portion (7d) being made of a material which is deformed non-elastically in response to application of a force. The edge portion (7d) is crushed flat when the nozzle (7) is coupled to the valve body (5).