Internal Combustion engine
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United States of America Patent
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Issued Date -
Sep 21, 2006
app pub date -
Jan 13, 2006
filing date -
Mar 18, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An in-cylinder injector injects a spray such that the spray spreads in an inverted V-shape with a spark plug lying between two prongs when viewed from above and in a fan shape when viewed from a side. On a top surface of a piston, a cavity having a bottom surface and an outermost side surface is provided, the bottom surface directing the spray spread in a fan shape when viewed from above toward the spark plug when the spray impinges thereon, and the outermost side surface directing the spray spread in the inverted V-shape when viewed two-dimensionally toward the spark plug when the spray impinges thereon. When viewed from above, cavity is arranged in such a position as not overlapping with a position of a piston pin boss portion provided in a lower portion of the piston.
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