| 摘要 |
A plurality of ultrasound engine whistles used in an internal combustion engine. The whistles may be placed inside a carburetor, inside a cylinder head, around an engine valve stem and other locations inside the engine. The whistles provide for greatly improved air fuel mixture prior to ignition. Also, the whistles allow for increased engine performance and acceleration, improved fuel mileage and a cleaner burning air fuel mixture for reduced fuel emissions into the environment. The ultrasound whistles include a whistle body having a first end portion and a second end portion. A whistle hole with whistle lip therearound is formed in the first end portion of the whistle body. The whistle hole has a depth in a range of 0.032 to 0.050 inches. Also, the whistle hole has a diameter in a range of 0.031 to 0.033 inches. The whistles may have various lengths in a range of ⅛ inch to 1 inch and longer depending on the application inside the engine. The whistles help create a greater and more homogenous and atomized air fuel mixture prior to ignition in the engine cylinder.
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