Injector with assist air passage for atomizing fuel

Details Injector with assist air passage for atomizing fuel Injector with assist air passage for atomizing fuel

1991-02-28

1993-09-07

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123585, 239533003, 239DIG19, 239900, 2395854, F02M 2312, F02M 2314

Patent

active

052419380

ABSTRACT:
A fuel injector including a valve housing having a nozzle for columnarly injecting fuel and a valve seat continuing from the nozzle; a valve body reciprocatably mounted in the valve housing and having a valve portion adapted to abut against and retract from the valve seat and thereby close and open the nozzle, respectively; and an adapter fixed to a front end of the valve housing. The adapter is formed with an atomizer hole communicating with the nozzle and an assist air passage extending through a side wall of the adapter for supplying an assist air into the atomizer hole to atomize the columnar fuel injected from the nozzle. Both the valve portion and the valve seat are formed to have surfaces in a conical shape so that upon retraction of the valve portion, the space generated between the surfaces becomes uniform over substantially the length of the surfaces.

REFERENCES:
patent: 4007880 (1977-02-01), Hans et al.
patent: 4289104 (1981-09-01), Takada et al.
patent: 4351304 (1982-09-01), Schweizer
patent: 4465050 (1984-08-01), Igashira et al.
patent: 4657189 (1987-04-01), Iwata et al.
patent: 4676216 (1987-06-01), Ohsawa et al.
patent: 4982716 (1991-01-01), Takeda et al.
patent: 4982901 (1991-01-01), Holzgrefe

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