Two-stroke internal combustion engine with oil ring
AssigneeFEV Engine Technology
InventorPeter Hofbauer
Life of this patent
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Abstract
A two-stroke internal combustion engine having a seal assembly disposed between a piston and a running surface. The seal both lubricates and prevents exhaust of combustion gases. A first element, which ensures gas tightness, is received in a countersunk portion of the running surface. A second element, which ensures oil tightness, is partially embedded into the first element. A biasing element presses the second element against the first element so that the second and third elements are at least partially held within the first element.
Claims20
A two-stroke internal combustion engine with at least one port of a gas control system for an intake and/or exhaust, wherein a gap between a reciprocating piston and a running surface surrounding this piston is sealed, characterized in that a seal assembly is arranged for sealing the gap in the running surface, with the piston sliding along this combination seal.
The seal assembly for arrangement between a piston and a cylinder wall of an internal combustion engine opposite the piston, wherein the seal assembly provides on its inner side a gas and oil seal, wherein a first element of the seal assembly essentially guarantees the gas seal and a second element essentially guarantees the oil seal, and by means of a third element, a force can be exerted at least on the second element in order to generate a movement of the second element in the direction of the interior of the combination seal, wherein the first element forms an outer side of the seal assembly and the second and the third elements are embedded in the first element.
Dependencies are inferred from the claim text.