Fuel injection nozzle assembly with stretch element

Details Fuel injection nozzle assembly with stretch element Fuel injection nozzle assembly with stretch element

1976-05-21

1977-09-06

Love, John J.

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

23953313, B05B 130, F02M 6116

Patent

active

040463222

ABSTRACT:
A fuel injector nozzle assembly is provided in one embodiment with a nozzle body having a bored opening extending therethrough from an inlet end of the nozzle body to a spray tip end thereof, a valve being mounted in the nozzle body to extend through the bore to form with the nozzle body an annular fuel chamber, one end of the fuel chamber being connectable by a passage means in the inlet end of the nozzle body to a source of pressurized fuel, the valve having its stem end fixed to the inlet end of the nozzle body and having its head positioned to abut against a valve seat in the spray tip end of the nozzle body in a normally closed position, the stem of the valve intermediate its ends being of reduced diameter relative to the head whereby fuel, at a predetermined pressure in the fuel chamber, will effect longitudinal deformation, that is, lengthening or stretching of the valve a limited amount without causing permanent deformation whereby to cause unseating of the valve from the valve seat to permit the discharge of fuel from the fuel chamber out through the spray tip and, as the pressure of fuel in the fuel chamber is reduced, the valve will then contract to again effect seating of the valve.
In an alternate embodiment, the portion of the nozzle body forming the exterior wall of the fuel chamber is of reduced thickness and the inside diameter of the bore is of a predetermined size relative to the head of the valve whereby the nozzle body, per se, will stretch relative to the valve to thereby effect unseating of the valve head relative to the valve seat in the nozzle body when fuel above a predetermined pressure is supplied to the fuel chamber.

REFERENCES:
patent: 1609578 (1926-12-01), Scott
patent: 1755192 (1930-04-01), Scott
patent: 2119966 (1938-06-01), Scott
patent: 3419251 (1968-12-01), Eckert
patent: 3442456 (1969-05-01), Thompson et al.

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