Compact fuel injection nozzle

Details Compact fuel injection nozzle Compact fuel injection nozzle

2005-11-01

2005-11-01

Kim, Christopher (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Processes

Of fuel injection

C239S533300, C239S533600, C239S533900

Reexamination Certificate

active

06959878

ABSTRACT:
A compact fuel injection nozzle includes a unitary nozzle body, a nozzle cap, a valve member and a spring sub assembly. The spring sub assembly provides a biasing force against a valve member that includes an integral lift stop. The biasing force holds the nose of the valve member against the valve seat of the nozzle body until the fuel pressure inside the injector exceeds a minimum opening pressure. The lift stop provides a stop limit, permitting the valve member to move away from the valve seat a predetermined axial distance. The minimum opening pressure and valve opening axial distance may be calibrated by selection and installation of shims.

REFERENCES:
patent: 3980234 (1976-09-01), Bouwkamp
patent: 4163521 (1979-08-01), Roosa
patent: 4200231 (1980-04-01), Knape
patent: 4790055 (1988-12-01), Raufeisen et al.
patent: 5110054 (1992-05-01), Stevens
patent: 5647540 (1997-07-01), Buckley

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