HIGH PRESSURE TWO-PIECE PLUNGER PUMP ASSEMBLY
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United States of America Patent
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Issued Date -
Mar 3, 2011
app pub date -
Sep 2, 2009
filing date -
Sep 2, 2009
priority date (Note) -
Abandoned
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Abstract
A high pressure pumping apparatus for of an internal combustion engine includes a pump barrel having a bore with a central axis, and a two-part pumping plunger provided in the bore of the barrel. The two-part plunger includes first and second pumping plunger parts that are separate from one another and arranged substantially coaxial with the central axis of the barrel's bore. A first distal end portion of the first pumping plunger part abuts a first distal end portion of the second pumping plunger part, and a second distal end portion of the first pumping plunger part in part defines a pumping chamber. The high pressure pumping apparatus includes and a tappet assembly that is operably coupled to the second distal end portion of the second pumping plunger part for operably engaging a rotating camshaft, which causes the first and second plunger parts to move in reciprocal motion.
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