Carburetor assembly

By integrating a resistor in the fuel passage to block fuel flow to the nozzle, the issue of fuel dripping due to check valve instability during idling is resolved, leading to stable engine operation.

JP7689915B2Active Publication Date: 2025-06-09HUSQVARNA AB
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Patent Information

Application Number
JP2021211933
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-12-27
Publication Date
2025-06-09
Estimated Expiration
2041-12-27

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Abstract

To provide a carburetor assembly capable of suppressing drip of fuel from a nozzle to an air-fuel mixture passage during idling.SOLUTION: A carburetor assembly includes: a fuel chamber 12 storing fuel to be supplied to an air-fuel mixture passage 11; a nozzle 13 having a check valve 13a and discharging fuel to the air-fuel mixture passage, the nozzle 13 disposed at a position enabling gravity fall of fuel in the air-fuel mixture passage 11; a plurality of holes 14 for discharging fuel to the air-fuel mixture passage 11 at a position on a downstream side of an air-fuel mixture flow of the position of the nozzle 13 in air-fuel mixture passage 11 during idling; a fuel passage 15 for connecting the fuel chamber 12 with the nozzle 13 and connecting the fuel chamber 12 with the plurality of holes 14; and a resistive element 25 disposed in the fuel passage 15 between the fuel chamber 12 and the nozzle 13 to serve as a resistor to a fuel flow toward the nozzle 13.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Novel quantitative-injection small gasoline engine

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