Patent ID: 6655603
Filing Date: 2003-12-02
Classification: F02M

Abstract:
A fuel injector comprising:an injector body defining a nozzle supply passage and a nozzle outlet; a reverse flow valve member positioned in the injector body and including an opening hydraulic surface exposed to fluid pressure in an upper portion of the nozzle supply passage, and being moveable between a closed position in which the nozzle supply passage is blocked, and an open position in which the nozzle supply passage is open; a compressed spring operably positioned to bias the reverse flow valve member toward the closed position; the injector body defines a guide bore; the reverse flow valve member being positioned in the guide bore and having a guide clearance in the guide bore; an interaction between the reverse flow valve member and the injector body, and being operable to prevent the reverse flow valve member from rotating with respect to the injector body.