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US 2026/0309109 A1Published application
Fuel injection arrangement for hand-held powertools
AssigneeHusqvarna AB
InventorsNiklas SUNDBERG, Bo CARLSSON
Life of this patent
Estimating the term…
Abstract
Hand-held power tool including a crankcase scavenged combustion engine arranged to drive a work tool, where a fuel injector is configured to provide a controlled amount of fuel into an air and fuel intake flow of the combustion engine, and where an idling air flow channel is arranged to connect with the air and fuel intake flow of the combustion engine in connection to the fuel injector.
Claims20
A hand-held power tool comprising a crankcase scavenged combustion engine arranged to drive a work tool,
- wherein a first mass of the equipment comprises the combustion engine,
- wherein a second mass of the equipment is vibrationally decoupled from the first mass by means of one or more resilient members,
- wherein a fuel pump is arranged to deliver fuel to a fuel injector,
- wherein the fuel injector is configured to provide a controlled amount of the fuel into an air and fuel intake flow of the combustion engine,
- wherein the fuel injector is arranged in the second mass and thus separated from the first mass by the one or more resilient members.
2 more elements
An integrally formed fuel system module for a crankcase scavenged two-stroke combustion engine, the module comprising
- an input aperture for allowing a flow of clean air into the fuel system module,
- one or more airhead channel apertures arranged to interface with respective airhead channels for guiding clean air out from the fuel system module,
- a fuel and air mixture aperture arranged to interface with a conduit for guiding a fuel and air mixture out from the fuel system module,
- a throttle valve arranged to control the flow of clean air from the input aperture to the one or more airhead channel apertures and to the fuel and air mixture aperture, and
- a fuel injector seat arranged to receive a fuel injector, wherein an aperture into the conduit for guiding the fuel and air mixture out from the fuel system module is formed in connection to the fuel injector seat.
2 more elements
Dependencies are inferred from the claim text.