Engine exhaust extractor with internal airfoils and method of manufacturing
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United States of America Patent
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Apr 30, 2019
Grant Date -
Aug 16, 2018
app pub date -
Feb 15, 2017
filing date -
Feb 15, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
An improved engine exhaust extractor improves internal combustion engine performance and efficiency. The exhaust extractor includes coaxial inner and outer tubes separating a flow into an inner flow inside the inner tube and an outer flow between the tubes and merging near the exhaust extractor outlet. Helically oriented vanes extend radially from an outer face of the inner tube and reliefs are cut into the inner tube to allow gasses to flow to the outer flow. The inner tube is held in place by end pieces connecting the inner tube to the outer tube. The end pieces include fan blades with wing shaped cross-sections to increase the velocity of exhaust gasses flowing through the exhaust extractor. The fan-like supports and helically oriented vanes cause the outer flow to rotate about a central axis. The exhaust extractor is constructed from only six parts requiring only two welds.
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