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US 5,398,652 AGranted
Knife-edge rocker bearing internal combustion engine
OwnerFrancis W. Jacksoninventor
Life of this patent
Estimating the term…
Abstract
Use of a low friction "Knife-edge" pivot bearing for a rocker arm drive for an Internal Combustion Engine; Controlling chamber pressure or TDC volume through 1) adjusting TDC volume as a function of engine operational conditions or 2) an energy store and return device including selection of TDC volume as a function of variable inlet valve timing and 3) increased nominal operating point piston speed.
Claims4
A reciprocating piston drive mechanism for Internal Combustion engines and compressors/expanders where the piston rod driving the piston is driven from an arm oscillating through less than 120 degrees peak to peak in rotation;
- and wherein a pivot bearing surface constraining said oscillating arm to rotation consists of a convex radius length of material held in a mating radius concave length of material;
- and wherein in a plane at right angles to the loci of said radii forming said bearing's surface are less than 360 degrees circumferentially;
- and wherein the load transmitted through said bearing for said convex length is supported by support material in a direction away from said mating surface;
- and wherein the load transmitted through said bearing for said concave length is supported by support material in a direction away from said mating surface.
1 more element
Dependencies are inferred from the claim text.