Connecting rod bore
AssigneeMahle International GmbH
InventorsMichael T. Lapp, Dan H. Dinu, Roger Krause
Life of this patent
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Abstract
A linking arm conveying generally linear movement from a piston into generally radial movement of a crankshaft is disclosed. The linking arm includes a shaft extending between a piston pin end and a crankshaft pin end. The piston pin end defines a piston pin bore. A piston pin bore surface is defined by the piston pin bore, where the piston pin bore includes a non-circular transverse profile having at least two curved surfaces that each include a distinct radius, where the at least two curved surfaces are positioned in different locations around a periphery of the transverse profile.
Claims20
A linking arm conveying generally linear movement from a piston into generally radial movement of a crankshaft, comprising:
- a shaft extending between a piston pin end and a crankshaft pin end, the piston pin end defining a piston pin bore;
- and
- a piston pin bore surface defined by the piston pin bore, the piston pin bore including a non-circular transverse profile having at least two generally curved surfaces that each include a distinct radius;
- wherein the at least two curved surfaces are positioned in different locations around a periphery of the transverse profile.
A connecting rod, comprising:
- a shaft extending between a piston pin end and a crankshaft pin end, the piston pin end defining a piston pin bore;
- and
- a piston pin bore surface defined by the piston pin bore, the piston pin bore including a non-circular transverse profile;
- and
- a first curved surface including a first radius and a second curved surface including a second radius, wherein the first curved surface and the second curved surface are positioned in different locations around a periphery of the transverse profile.
A piston assembly, comprising:
- a connecting rod including:
- a shaft extending between a piston pin end and a crankshaft pin end, the piston pin end defining a piston pin bore;
- and
- a piston pin bore surface defined by the piston pin bore, the piston pin bore including non-circular transverse profile having at least two curved surfaces that are positioned in different locations around a periphery of the transverse profile;
- and
- a piston pin received by the piston pin bore, where the piston pin includes a direction of motion that generally corresponds to at least a portion of the piston pin bore surface, and where piston pin maintains continuous contact with at least a portion of the piston pin bore surface as the piston pin travels along the direction of motion during operation of the piston assembly.
Dependencies are inferred from the claim text.