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Double bowl piston

United States Patent

March 6, 2007
View the Complete Patent at the US Patent & Trademark Office
A piston for an internal combustion engine is disclosed. The piston has a piston crown with a face having an interior annular edge. The piston also has first piston bowl recessed within the face of the piston crown. The first piston bowl has a bottom surface and an outer wall. A line extending from the interior annular edge of the face and tangent with the outer wall forms an interior angle greater than 90 degrees with the face of the piston. The piston also has a second piston bowl that is centrally located and has an upper edge located below a face of the piston crown.
Meffert; Darrel Henry (Sparland, IL), Urven, Jr.; Roger Leroy (Colona, IL), Brown; Cory Andrew (Pekin, IL), Runge; Mark Harold (Peoria, IL)
Caterpillar Inc (Peoria, IL)
10/ 975,101
October 28, 2004
U.S. GOVERNMENT RIGHTS This invention was made with government support under the terms of Contract No. DE-FC05-97OR22605 awarded by the Department of Energy. The government may have certain rights in this invention.