Fuel injection valve with vortex chamber occupying auxiliary val

Details Fuel injection valve with vortex chamber occupying auxiliary val Fuel injection valve with vortex chamber occupying auxiliary val

1976-12-03

1978-10-17

Blunk, Evon C.

Fluid sprinkling, spraying, and diffusing

Flow deflecting or rotation controlling means

Fluid rotation inducing means upstream of outlet

239473, 23953312, B05B 130, B05B 134

Patent

active

041204565

ABSTRACT:
The vortex chamber (11) of a fuel injection valve is occupied by a stepped, spring biased auxiliary valve (13) disposed in a cylindrical recess (8a) in a passage member (7) at the completion of each injection cycle. This seals the nozzle opening (14) and expels any residual fuel from the vortex chamber in preparation for the next injection cycle. The auxiliary valve (13) is raised by the injection pressure acting on its downwardly facing, circular shoulder. Alternatively, the auxiliary valve may be made integral with the main needle valve (29) in the form of a truncated conical tip (27a) on the end of an axial stem portion (27), the tip extending through and occupying a vortex chamber above a valve seat (26) at the end of each injection cycle.

REFERENCES:
patent: 1322137 (1919-11-01), Salfeld
patent: 1333612 (1920-03-01), Fisher
patent: 1607805 (1926-11-01), Sprado
patent: 2414544 (1947-01-01), Moore
patent: 2613998 (1952-10-01), Noon et al.

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