Piston for an internal combustion engine
AssigneeCaterpillar Motoren GmbH & Co. KG
InventorVolker Abraham
Life of this patent
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Abstract
The present invention refers to a piston for an internal combustion engine, particularly a V-engine. The piston comprises an oil drainage groove provided in the outer circumferential surface of the piston between a ring belt and a piston skirt of the piston, the piston skirt being provided with two recessed pin boss portions on opposed sides of the piston, wherein the piston skirt is further provided with at least one oil drainage duct arranged between the two recessed pin boss portions at an outer surface of the piston skirt and configured to fluid-communicatively connect the oil drainage groove with the recessed pin boss portions.
Claims14
A piston for an internal combustion engine, comprising an oil drainage groove provided in an outer circumferential surface of the piston between a ring belt and a piston skirt of the piston, the piston skirt being provided with two recessed pin boss portions on opposed sides of the piston, wherein
- the piston skirt is further provided with at least one oil drainage duct arranged between the two recessed pin boss portions at an outer surface of the piston skirt and configured to fluid-communicatively connect the oil drainage groove with the recessed pin boss portions, the oil drainage duct having a flow cross-section that tapers along a flow direction of oil in the oil drainage duct.
Dependencies are inferred from the claim text.