Fuel-injected internal combustion engine with improved combustion
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United States of America Patent
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Dec 2, 1997
Grant Date -
N/A
app pub date -
Jul 25, 1995
filing date -
Jul 25, 1995
priority date (Note) -
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Abstract
An internal combustion engine comprising an engine block defining a cylinder having a longitudinal axis, an upper end, and a cross-sectional area in a plane perpendicular to the axis, a piston reciprocally moveable in the cylinder along the axis, the piston having an upper surface, a cylinder head including a lower surface portion closing the upper end of the cylinder, the lower surface portion extending generally perpendicular to the axis and having therein an upwardly extending recess, the recess having an upper end, a lower end, and a height, the lower end of the recess having an area in a plane perpendicular to the axis, the area being equal to approximately one-fifth the cross-sectional area of the cylinder, the height being equal to at least one-third of the cylinder diameter, a fuel injector supported relative to the cylinder head for injecting fuel into the recess, and a spark plug which is supported relative to the cylinder head and which extends into the recess for creating a spark.
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