Piston-pin bearing lubrication system and method for a two-stroke internal combustion engine
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United States of America Patent
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Feb 18, 2014
Grant Date -
Sep 9, 2010
app pub date -
Aug 27, 2009
filing date -
Jul 21, 2006
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Abstract
An improved lubrication system and method for the normally contacting and abutting piston pin and connecting rod journal bearing surfaces of an internal combustion engine that includes an inertia pump in a connecting rod. The inertia pump reacts to the movement of the connecting rod and conveys a predetermined measure of lubricating oil at a high enough pressure to overcome the forces which cause the surfaces to normally maintain contact. By separating the normally contacting surfaces of the pin and the connecting rod journal, the surfaces become lubricated. Several embodiments of inertia pumps provide variations in implementing the invention.
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