Carburetor with intermediate throttle valve blocking position
AssigneeHomelite Technologies, Ltd.
InventorNagesh S. Mavinahally
Life of this patent
Estimating the term…
Abstract
A carburetor including a frame having a first air/fuel channel and a second air channel; and a throttle valve assembly connected to the frame and having two valve sections. Each valve section is located in a respective one of the channels. A second one of the valve sections has an air bleed hole therethrough. The second valve section is movable relative to the frame from a first idle position to a second intermediate closed position and then to a third open position at a wide open throttle (WOT). The air bleed hole allows flow through the second channel at the first idle position, but does not allow flow through the second channel when the second valve section is at the second intermediate closed position.
Claims13
A carburetor comprising:
- a frame comprising a first air/fuel channel and a second air channel;
- and
- a throttle valve assembly connected to the frame and having two valve sections, each valve section being located in a respective one of the channels, a second one of the valve sections having an air bleed hole therethrough,
- wherein the second valve section is movable relative to the frame from a first idle position to an intermediate closed position and then to a third open position at a wide open throttle (WOT), and wherein the air bleed hole allows flow through the second channel at the first idle position, but does not allow flow through the second channel when the second valve section is at the intermediate closed position.
A method of supplying air and an air/fuel mixture through a carburetor in an internal combustion engine, the method comprising steps of:
- locating a throttle valve assembly of the carburetor at an idle position, wherein air is allowed to flow through an air channel of the carburetor through an air bleed hole in the throttle valve assembly, and wherein the air/fuel mixture is allowed to flow through an air/fuel channel of the carburetor;
- moving the throttle valve assembly to an intermediate position, wherein air is substantially prevented from flowing through the air channel, and wherein the air/fuel mixture is allowed to flow through the air/fuel channel;
- and
- moving the throttle valve from the intermediate position towards a wide open throttle position wherein air is allowed to flow through the air channel through the throttle valve assembly.
Dependencies are inferred from the claim text.