Injector valve in injector for gas fuel

Abstract

The sticking phenomenon between a coating film and a metal seat caused by a fluorine resin of a valve member can be avoided when a dissolution of a plasticizer from a fuel hose is much, and an excellent durability can be achieved when the operation is continued thereafter and the dissolution of the plasticizer is reduced. In an injector valve in an injector for a gas fuel, the injector valve has an injector valve member having a close-contact member arranged on an acting surface thereof, the close-contact member including a base material formed by a rubber material and a fluorine resin coating film formed on the surface of the base material. The fluorine resin coating film is formed by a first fluorine resin coating film applied to the surface of the base material and having an excellent durability, and a second fluorine resin coating film applied to the first fluorine resin coating film and having an excellent release characteristic.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an enlarged partial schematic view showing a preferable embodiment in accordance with the present invention;

FIG. 2 is an enlarged partial schematic view showing a state after passing through an initial used time of the embodiment shown in FIG. 1; and

FIG. 3 is an enlarged partial schematic view showing a prior art.

Claims

1. An injector valve in an injector for a gas fuel, the injector valve having an injector valve member having a close-contact member arranged on an acting surface thereof, the close-contact member comprising a base material formed by a rubber material and a fluorine resin coating film formed on a surface of the base material, wherein the fluorine resin coating film is formed by a first fluorine resin coating film applied to the surface of the base material and having an excellent durability, and a second fluorine resin coating film applied to the first fluorine resin coating film and having an excellent release characteristic.

2. The injector valve in an injector for a gas fuel as claimed in claim 1, wherein the first fluorine resin coating film is formed by a fluorine resin using an epoxy binder resin, and the second fluorine resin coating film is formed by a fluorine resin coating film using a phenol binder resin.