OIL CONTROL RING OF FERROUS BODY FOR INTERNAL COMBUSTION ENGINES
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United States of America Patent
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Issued Date -
Jul 4, 2013
app pub date -
Jun 1, 2011
filing date -
Jun 4, 2010
priority date (Note) -
Abandoned
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Abstract
An oil control ring for internal combustion engines, formed by a ferrous body having two external contact surfaces where each surface contains first and second extremity edges, two tilted faces where each tilted face starts from the respective second edge, a peripheral transversal section directed at the cylinder wall and an internal circular section directed at the side of the piston, where the projections of contact are directed, so that the respective tilted faces are turned facing the other, symmetrically, in a preferred concretization. The ring allows the maintenance of appropriate levels of contact pressure, even under reduced expanding loadings due to the use of profile that brings reduced contact of the ring with the cylinder interface. Additionally, it brings better dynamic stability and consequent distribution of the contact pressure of the set. It also makes it possible to apply superficial hardening treatments on oil rings with reduced contact surface.
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