Internal-combustion engines – Lubricators – Crankcase – pressure control
Patent
1990-06-18
1991-03-26
Cross, E. Rollins
Internal-combustion engines
Lubricators
Crankcase, pressure control
123193CP, 184 68, 92155, F01M 100
Patent
active
050020250
ABSTRACT:
A lubricated cylinder wall in which an oil permeable cylinder ring is located on the inside surface of a cylinder. Oil from an oil supply channel located behind the oil permeable ring supplies the ring with oil. When the oil pressure in the oil supply channel is greater than the pressure inside the cylinder, oil is forced through the oil permeable ring and onto the inside surface of the oil permeable ring. Because the ring is located in the cylinder wall at a location above the bottom dead center location of the piston, upward motion of the piston inside the cylinder sweeps oil from the inside surface at the oil ring over the inside surface of the cylinder. The oil ring is installed in the cylinder by coiling it to a smaller diameter then the cylinder, placing the coiled ring in a groove on the inside surface of the cylinder, pressure fitting the coiled ring into the groove, and then honing the inside surface of the ring to be flush with the inside surface of the cylinder.
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Degrees of Crankshaft Rotation and Piston Strokes, pp. 127, 69, 88, (no months or years provided).
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