| 摘要 |
<p>To prevent foreign materials such as dust or tar that are mixed in gas fuel from being attached to a portion of the orifice that is disposed for measuring the flow rate through the fuel through-hole in the injector of the gas fuel so that the flow rate of the fuel is prevented from decreasing. An injector 1 for gas fuel, in which an injector valve body 7 is moved up and down in an axial direction so as to contact or separate from a valve seat 11 held on a valve seat holder 10 having a fuel through-hole 9 that is arranged opposite to the lower side thereof, the fuel coming in from a fuel inlet 13 is intermittently transmitted to the fuel through-hole 9 at a predetermined interval and an orifice 14 for measuring flow rate is disposed in the fuel through-hole 9, featuring a coating layer 15 consisting of Ni-P plating containing fluorine resin particles applied to the inner surface of the orifice 14.</p> |
