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US 5,097,814 AGranted
Tuned air insert for internal combustion engines and related process
OwnerGeorge C. Smithinventor
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OwnerGeorge C. Smithinventor
Estimating the term…
The present invention seeks to provide a simple, low cost and easy-to-install (or remove) device for two-cycle engines which improves engine efficiency through more complete combustion, resulting in increased engine rpm and a decrease in emissions. The invention specifically relates to an insert device which is located upstream of the carburetor, preferably in a coupler which typically extends between an air cleaner and the carburetor of a two-cycle engine. The insert itself is generally formed as a tubular member (of one or more pieces) tapering from a larger inlet side to a smaller outlet side, with or without surface irregularities, i.e., ribs, flutes, etc., formed on its interior surface. It is important that the tuned air insert be located such that its lower edge, i.e., on the outlet side, be raised above the coupler outlet and carburetor inlet, and that the coupler surrounding the tuned air insert have a diameter sufficiently greater than that of at least a portion of the insert, so as to create a chamber surrounding the insert, immediately above and open to the carburetor inlet.
An insert device for mounting in a coupler extending between an air cleaner and a carburetor inlet of an internal combustion engine, said device comprising a tapered body portion extending between a larger diameter inlet end and a smaller diameter outlet end.
A coupling for use in connecting an air cleaner and a carburetor of an internal combustion engine, the coupling being of tubular construction having an inlet end for attachment to an outlet end of an air cleaner, and an outlet end for attachment to a planar surface surrounding an inlet of the carburetor, the outlet end of the coupling having a flat annular surface adapted for flush engagement with said planar surface;
In an internal combustion engine having a carburetor including a carburetor inlet and an air conduit connected to said carburetor inlet for introducing air to be mixed with fuel in the carburetor, a combustion enhancing and emissions reduction device located within said air conduit, said device comprising a tubular member having interior and exterior surfaces which taper inwardly from a larger diameter inlet end, said larger diameter inlet end being engaged with said air conduit so that air flowing through the conduit is directed through the tubular member, said smaller diameter outlet end being axially spaced from said carburetor inlet so as to create chamber open at one end and surrounding said tubular member immediately upstream of said carburetor inlet.
A method of improving combustion efficiency and reducing emissions in an internal combustion engine having a carburetor including a carburetor inlet and an air conduit connected to said carburetor inlet comprising the steps of:
A method of improving the combustion efficiency and reducing emissions in an internal combustion engine having a carburetor including a carburetor inlet and an air conduit connected to said carburetor inlet comprising the steps of:
Dependencies are inferred from the claim text.