Crankshaft repair system and method
AssigneeTransportation IP Holdings, LLC
InventorsDavid Harter, Zackary Quidetto, David Lachendro, Beau Fisher, Paul Knapik, Justin Fowler, William Gray, John P. Dowell
Life of this patent
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Abstract
A crankshaft for an internal combustion engine is provided and may include crank pins, crank journals, and webs extending between the crank pins and the crank journals. Each web further may include a web surface on each side of the web. On the web surface, a repair region is provided with an undercut formed in the web. Included in the crankshaft is a cladding deposit that is fused to the web surface in the repair region of the crankshaft.
Claims18
A crankshaft for an internal combustion engine comprising:
- at least one crank pin;
- at least one crank journal;
- at least one web extending between the at least one crank pin and the at least one crank journal, the web having a web surface with a portion of the web surface defining a repair region that is an undercut that extends into the body of the crankshaft;
- and
- a cladding deposit fused to the web surface in the repair region, the cladding deposit being formed by cladding a metal additive to the undercut;
- wherein the web further comprises a pin collar adjacent to the at least one crank pin and a journal collar adjacent to the crank journal;
- wherein cladding comprises:
- a first laser cladding, wherein the cladding deposit is formed in the undercut via the first laser cladding;
- and
- a second laser cladding after the cladding deposit is formed in the undercut via the first cladding.
A method of repairing a crankshaft, comprising:
- machining the crankshaft at a repair region encompassing at least one crack to form an undercut extending through a web surface of a web and into a body of the crankshaft;
- and
- cladding a metal additive to the undercut to form a cladding deposit in the repair region, the cladding deposit filling the undercut;
- wherein the web further comprises a pin collar adjacent to a crank pin and a journal collar adjacent to a crank journal;
- wherein cladding comprises laser cladding;
- and
- wherein the laser cladding comprises a second step of laser cladding the cladding deposit after the cladding deposit is formed in the undercut via a first cladding step.
Dependencies are inferred from the claim text.