Low pressure fuel injection system
AssigneeGeneral Electric Company
InventorsRichard E. Stenger, Edward E. Ekstedt, John M. Richey, Stanford P. Seto
Life of this patent
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Abstract
A low pressure fuel stream is injected into a carburetor by way of a fuel tube injector combination having an insulating air space provided between the internal flow path structure and the outer surface of the combination which is exposed to relatively high temperatures. The fluid stream is thus maintained at a relatively low temperature and pressure until it is discharged from the fuel injector, at which time a surrounding airstream prevents the direct contact of the fuel flow with the surface of the fuel injector, and therefore prevents any carbon build-up which would otherwise occur on or near the fuel exit orifice.
Claims14
An improved fuel injector of the type attached to a fuel supply for receiving fuel and discharging it into an airstream for carburetion thereof, wherein the improvement comprises:
- a. a hollow body attachable at its one end to a fuel supply line and having at its other end a flow tube extending from said body, said flow tube having a hole formed therein for discharging fuel from said body;
- and
- b. a shroud formed around the outer side of said body to form a cavity between said shroud and said body, said shroud comprising a cylindrical portion and a flared portion extending radially outwardly from said cylindrical portion to define an air inlet to said cavity for receiving an uncarbureted air supply, and said cavity having an axial air outlet at its downstream end for discharging a portion of the uncarbureted air in a substantially axial direction and an outlet aperture through which said flow tube extends and through which air is discharged in surrounding relationship with said flow tube.
An improved fuel injector of the type attached to a fuel supply for receiving fuel and discharging it into an airstream for carburetion thereof, wherein the improvement comprises:
- a. a hollow body attachable at its one end to a fuel supply line and having at its other end a fuel discharge port;
- b. a shroud formed around the outer side of said body to form a cavity between said body and said shroud for the conduct of relatively hot air to be used for carburetion;
- c. a sleeve disposed concentrically within said body to define an annulus between said sleeve and said body;
- and
- d. a gap associated with said sleeve to fluidly connect said annulus with said fuel supply line to allow the entry of fuel into said annulus for the purpose of decomposing carbon deposits which may form therein.
Dependencies are inferred from the claim text.