Large-bore, medium-speed diesel engine having piston crown bowl with acute re-entrant angle
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United States of America Patent
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Oct 21, 2008
Grant Date -
Aug 11, 2005
app pub date -
Feb 6, 2004
filing date -
Feb 6, 2004
priority date (Note) -
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Abstract
A large-bore (at least 180 mm diameter) diesel engine cylinder configuration featuring a piston crown bowl having an acute re-entrant angle and, optionally, an anti-polish ring. The acute re-entrant angle crown bowl involves a maximum radius of the crown bowl exceeding a minimum crown bowl radius, wherein the maximum crown bowl radius is located farther from the squish face than is the minimum crown bowl radius. The acute re-entrant angle crown bowl applied to large-bore, medium-speed diesel engines yields an improvement in performance and emissions characteristics. The anti-polish ring may be integrally formed with the cylinder liner and used in any internal combustion engine.
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