Piston for a reciprocating-piston internal combustion engine
AssigneeMan Truck & Bus AG
InventorsThomas Malischewski, Jens Dietrich, Jürgen Ritter, Dominik Renner
Life of this patent
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Abstract
A piston for a reciprocating-piston internal combustion engine includes a piston head and a piston skirt. The piston head has an encircling ring zone having at least one ring groove for a piston ring and an encircling cooling duct. In this case, the piston further includes at least one first bore starting from the cooling duct, the bore leading from the cooling duct to a bearing location of an upper connecting-rod bearing pin of the piston and opening into the bearing location in the form of a bore opening in order to supply the piston pin with lubricant from the cooling duct.
Claims16
A piston for a reciprocating-piston internal combustion engine, comprising:
- a piston head and a piston skirt, wherein the piston head has an encircling ring zone having at least one ring groove for a piston ring and an encircling cooling duct,
- at least one first bore starting from the cooling duct, said bore leading from the cooling duct to a bearing location of an upper connecting-rod bearing pin of the piston and opening into the bearing location in the form of a bore opening in order to supply the piston pin with lubricant from the cooling duct.
A motor vehicle, in particular a commercial vehicle, having a piston, the piston comprising:
- a piston head and a piston skirt, wherein the piston head has an encircling ring zone having at least one ring groove for a piston ring and an encircling cooling duct,
- at least one first bore starting from the cooling duct, said bore leading from the cooling duct to a bearing location of an upper connecting-rod bearing pin of the piston and opening into the bearing location in the form of a bore opening in order to supply the piston pin with lubricant from the cooling duct.
Dependencies are inferred from the claim text.