Fuel pressurization device
OwnerKoichi Shinotsuka, Yushi Maruyama +1inventors
InventorsKoichi Shinotsuka, Yushi Maruyama, Toshihisa Nemoto
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Abstract
A fuel pressurization device configured to pressure-feed starting fuel to an engine. The fuel pressurization device includes a fuel chamber forming portion including a fuel chamber to which the fuel is supplied from the pump and whose internal volume is variable, and a spring configured to bias the fuel chamber forming portion so as to reduce the volume of the fuel chamber and to pressure-feed the fuel in the fuel chamber.
Claims20
A fuel pressurization device for use with an engine assembly including a pump, a valve, and an engine, the fuel pressurization device comprising:
- a fuel chamber to which fuel is supplied from the pump and including an elastically deformable elastic body that forms one side of the fuel chamber, wherein an internal volume of the fuel chamber is variable as the elastic body deforms;
- a spring configured to bias the elastic body such that the internal volume of the fuel chamber decreases;
- a main body including a first main body portion that houses the spring and a second main body portion forming an opposite side of the fuel chamber,
- wherein the first main body portion includes a discharge port fluidly coupled to the fuel chamber, and
- wherein the fuel pressurization device is configured to pressure-feed the fuel from the fuel chamber to the engine via the valve of the engine assembly when starting the engine.
A fuel pressurization device configured to supply fuel to an engine, the fuel pressurization device comprising:
- a main body including:
- a first main body portion;
- a discharge port attached to the first main body portion;
- and
- a second main body portion forming a recess;
- a fuel chamber partially located inside the recess of the second main body portion and fluidly coupled with the discharge port, wherein the fuel chamber is configured to be variable in volume;
- and
- a spring housed in the first main body portion and configured to bias the fuel chamber so as to reduce the volume and apply pressure to the fuel in the fuel chamber when starting the engine.
An engine assembly comprising:
- an engine;
- and
- a fuel pressurization device configured to pressure-feed fuel to the engine, wherein the fuel pressurization device comprises:
- a fuel chamber fluidly coupled with the engine and including an elastically deformable elastic body, wherein a volume of the fuel chamber changes as the elastic body deforms;
- a spring configured to bias the elastic body so as to reduce the volume and apply pressure to the fuel in the fuel chamber when starting the engine;
- and
- a main body including a first main body portion that houses the spring and a second main body portion that forms a recess,
- wherein the fuel chamber is formed between the elastic body and the recess of the second main body portion, and
- wherein the first main body portion includes a discharge port fluidly coupled to the fuel chamber.
Dependencies are inferred from the claim text.