Patent ID: 6517011
Filing Date: 2003-02-11
Classification: F02M,Y10T

Abstract:
A fuel injector comprising:a pressurization section at least partially defining a variable-volume pressurization chamber; a nozzle section having a check bore, a nozzle chamber, an orifice, a fuel injection check extending into the nozzle chamber and being slidably disposed in the check bore between a first position that blocks fluid communication between the nozzle chamber and the orifice and a second position that opens fluid communication between the nozzle chamber and the orifice, and a reverse flow check valve fluidly connected with the nozzle chamber; and a fuel passage fluidly connecting the pressurization chamber in the pressurization section with the reverse flow check valve in the nozzle section, the reverse flow check valve including a perforated reverse flow check hydro-pneumatically movable between an open position that allows fluid communication from the fuel passage to the nozzle chamber and a closed position that denies fluid communication from the nozzle chamber to the fuel passage; and wherein the fuel injection check extends through a perforation in the reverse flow check valve.