Vortex-inducing valve seat insert
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United States of America Patent
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Jul 17, 2001
Grant Date -
N/A
app pub date -
Nov 17, 1999
filing date -
Nov 17, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve seat insert includes a ring bounded by surfaces including an inner wall circumferentially disposed about an imaginary central axis passing through the insert. The inner wall includes a plurality of grooves oriented diagonally with respect to the central axis. This and other disclosed valve seat designs impart a vortex to an air-fuel mixture as it enters the combustion chamber, improving combustion efficiency.
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