High-pressure pump for a fuel injection system of an internal combustion engine
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United States of America Patent
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-
Oct 9, 2007
Grant Date -
May 4, 2006
app pub date -
Aug 11, 2003
filing date -
Dec 4, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high-pressure pump having a drive shaft and at least one pump element including a pump piston driven in a reciprocating motion by the drive shaft. A ring on which the pump piston is braced via a support element is rotatably supported on a portion of the drive shaft that is disposed eccentrically to its pivot axis. The ring and/or the support element, at least in their contact region, has many microscopic indentations, and a solid lubricant film is applied to the ring and/or to the support element, at least in their contact region.
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