Charge forming system for combustion engine
AssigneeWalbro Corporation
InventorsTakashi Abei, Katsuaki Hamataka, Taketoshi Hirama, Takashi Horikawa, Tomoya Kawada, Nobuyuki Kuroki, Shunya Nakamura, Kazunori Tsubakino, Makoto Waku
Life of this patent
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Abstract
In at least some implementations, a charge forming system for a combustion engine includes a first fuel supply device having a first passage from which fuel is discharged for delivery to the engine and a second fuel supply device having a second passage from which fuel is discharged for delivery to the engine. The first passage communicates with the second passage so that the fuel in the first passage is combined with the fuel in the second passage.
Claims21
A charge forming system for a combustion engine, comprising:
- a first fuel supply device having a first passage from which fuel is discharged for delivery to the engine;
- and
- a second fuel supply device having a second passage from which fuel is discharged for delivery to the engine, wherein the first passage communicates with the second passage so that the fuel in the first passage is combined with the fuel in the second passage, wherein the first fuel supply device includes a carburetor that provides a fuel and air mixture to the engine, and the first passage has an outlet from which fuel and air are discharged from the first fuel supply device, and wherein the second fuel supply device is downstream of the first fuel supply device outlet and the second passage communicates with the outlet of the first passage.
A charge forming system for a combustion engine, comprising:
- a first fuel supply device having a first passage from which fuel is discharged for delivery to the engine;
- and
- a second fuel supply device having a second passage from which fuel is discharged for delivery to the engine, wherein the first passage communicates with the second passage so that the fuel in the first passage is combined with the fuel in the second passage, wherein the second fuel supply device includes an electrically actuated valve to selectively provide and not provide fuel to the second passage, and which also includes a fuel chamber in which a supply of fuel is maintained and which includes a fuel outlet from which fuel flows to the electrically actuated valve through a fuel passage, and wherein the electrically actuated valve controls fuel flow through a valve seat and wherein the fuel chamber is located above the valve seat with respect to the force of gravity so that fuel flows under the force of gravity from the fuel chamber outlet, through the fuel passage and to the electrically actuated valve.
A charge forming system for a combustion engine, comprising:
- a first fuel supply device from which fuel is discharged for delivery to the engine;
- a second fuel supply device having a fluid passage and fuel passage from which fuel is discharged into the fluid passage for delivery to the engine, the second fuel supply device having a fuel chamber in which a supply of fuel is maintained and which includes a fuel outlet from which fuel flows, and wherein the second fuel supply device includes an electrically actuated valve that controls fuel flow through a valve seat and wherein fuel flows under the force of gravity from the fuel chamber outlet, through the fuel passage and to the electrically actuated valve;
- and
- at least one suppressor arranged in the fuel passage to attenuate fluid flow in a reverse direction through the fuel passage wherein at least one of said at least one suppressor is located between the electrically actuated valve and the fluid passage.
Dependencies are inferred from the claim text.