Stratified scavenging two-cycle engine and carburetor
AssigneeHusqvarna Zenoah Co., Ltd.
InventorsTakeshi Watanabe, Ryou Ono
Life of this patent
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Abstract
A stratified scavenging two-cycle engine (10) comprising an engine body (11), a carburetor (12) equipped with a pivotable rotary valve (22) for switching between opening and closing of a single intake path, and an insulator (13) having heat insulating performance. The rotary valve (22) of the carburetor (12) is provided with a fuel injecting nozzle opening (26) open downward. The nozzle opening (26) is provided with a guide section (26A) by which fuel from the nozzle opening (26) is guided to a position corresponding to a position upstream in a mixed gas path (27).
Claims6
A stratified scavenging two-cycle engine comprising:
- an engine body provided with an intake port through which mixed gas flows in and an air port through which leading air flows in,
- a carburetor that is provided with a pivotable rotary valve for switching the opening and closing of one intake path and which generates said mixed gas and leading air in said intake path, and
- an insulator that is provided with a mixed gas path for circulating said mixed gas and an air path for circulating said leading air and which is arranged between said engine body and carburetor, wherein
- a nozzle opening opened outward for ejecting fuel from a rotary shaft center side is provided with said rotary valve, and
- a guide section for guiding the fuel from the nozzle opening to a position corresponding to a position upstream in said for gas path is provided for said nozzle opening.
A carburetor comprising a body including one intake path and a pivotable rotary valve for switching opening and closing of said intake path, wherein
- said rotary valve is provided with a nozzle opening opened outward for ejecting fuel from the rotary shaft center side, and
- said nozzle opening is provided with a guide section for guiding the fuel from the nozzle opening to a prescribed position on said outward side.
Dependencies are inferred from the claim text.