Swirl-conserving combustion chamber construction for opposed-piston engines
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United States of America Patent
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Dec 6, 2016
Grant Date -
Jan 16, 2014
app pub date -
Sep 13, 2013
filing date -
Apr 27, 2010
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Abstract
A combustion chamber construction for opposed-piston engines includes an elongated, bilaterally symmetrical shape referenced to a major axis and a pair of injection ports located on the major axis when the pistons are near respective top center positions. The combustion chamber is defined between a bowl in the end surface of a first piston of a pair of pistons and mirrored ridges protruding from the end surface of a second piston of the pair. Each ridge includes a central portion that curves toward a periphery of the end surface of the second piston and which transitions to flanking portions that curve away from the periphery. The ridge configuration imparts a substantially spherical configuration to a central portion of the combustion chamber where swirling motion of charge air is conserved.
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