Anti-polishing ring
AssigneeWartsila Diesel International Ltd Oy
InventorDaniel Paro
Life of this patent
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Abstract
An anti-polishing ring (4) to be used in a cylinder (1) of a large diesel engine, which is supported to a cylinder liner (2) for the purpose of removing possible carbon deposit and carbon residue from the upper portion of a piston (3). The anti-polishing ring (4) is provided with an arrangement, by means of which the lower edge (4b) of the anti-polishing ring can be pressed in the radial direction of the cylinder inwards towards the mantle surface of the upper portion of the piston so that the proportion between the diameters of the lower edge (4b) and the upper portion (4a) of the anti-polishing ring is at its minimum while the engine is running.
Claims17
An anti-polishing ring to be used in a cylinder of a diesel engine that includes a cylinder liner and a piston fitted in the cylinder liner, the piston having an upper portion and the upper portion of the piston having a mantle surface, the anti-polishing ring being supported to the cylinder liner for the purpose of removing possible carbon deposit and carbon residue from the upper portion of the piston, wherein the anti-polishing ring has an upper portion and a lower edge and the lower edge of the anti-polishing ring is pressed radially inward of the cylinder toward the mantle surface of the upper portion of the piston.
Dependencies are inferred from the claim text.