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US 2014/0260787 A1Published application
Selectively strengthened crankshaft
AssigneeElectro-Motive Diesel, Inc.
InventorsVijaya Kumar, Jin Yu
Life of this patent
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AssigneeElectro-Motive Diesel, Inc.
InventorsVijaya Kumar, Jin Yu
Estimating the term…
A crankshaft having a crankpin journal, a main journal joined to the crankpin journal by a crank web, is provided. The crankpin journal and the main journal have a hardened surface upto a first pre-determined depth. The crankshaft further includes a crankpin journal fillet joining the crankpin journal and the crank web. The crankpin journal fillet includes a hardened surface strengthened by a peening process. The crankshaft further includes a main journal fillet joining the main journal and the crank web. The main journal fillet includes a hardened surface strengthened by the peening process. The crankshaft also includes an oil passage extending through the crankpin journal and the main journal. The oil passage extends such that a portion of a surface proximate to the oil passage is hardened to a second pre-determined depth.
A crankshaft comprising:
A method for strengthening a crankshaft having at least one crankpin journal, at least one main journal joined to the at least one crankpin journal by a crank web, a crankpin journal fillet joining the crankpin journal and the crank web, a main journal fillet joining the main journal and the crank web, and at least one oil passage extending through the crankpin journal and the main journal, the method comprising:
A method for strengthening a crankshaft having at least one crankpin journal, at least one main journal joined by a crank web, a crankpin journal fillet joining the crankpin journal and the crank web, a main journal fillet joining the main journal and the crank web, and at least one oil passage extending through the crankpin journal and the main journal, the method comprising:
A method for strengthening a crankshaft having at least one crankpin journal, at least one main journal joined to the at least one crankpin journal by a crank web, a crankpin journal fillet joining the crankpin journal and the crank web, a main journal fillet joining the main journal and the crank web, and at least one oil passage extending through the crankpin journal and the main journal, the method comprising:
Dependencies are inferred from the claim text.