| 摘要 |
<p>A fuel pressure regulator valve (10) comprises a housing constructed from plural metal stampings and containing a diaphragm assembly (32) which divides the housing into a control chamber (34) and a fuel chamber (36). The housing is shaped to contain integral grooves (68, 74) for O-ring seals (70, 76) so that the O-rings stay on the valve when it is removed from its mounting socket (16) in a fuel rail (12). Two of the stampings partially define the fuel chamber and are joined by means of a crimp formed in one. The other of the two has a hardness greater than that of the one to facilitate its press-fit engagement with the valve seat tube (46). The crimp is below the upper O-ring seal so that the crimp provides an entirely satisfactory joint. Each O-ring (70, 76) is located within its groove (68, 74) with the aid of a spacer (72, 78) also disposed in the groove.</p> |
