Crankshaft thrust bearing
AssigneeCummins Inc.
InventorStephen D. Cofer, JR.
Life of this patent
Estimating the term…
Abstract
Improved engine crankshaft thrust bearing includes an arrangement in which the thrust bearing can be employed with a first type of crankshaft for a replacement engine block and also with a different, second type of crankshaft that can also be employed in the replacement engine block. The second type of crankshaft was previously used in the engine block being replaced.
Claims19
A bearing assembly, comprising:
- a semi-circular shaped bearing body with two sets of opposing faces extending from a first end of said bearing body to a second end of said bearing body;
- a first set of the opposing faces including a radially outwardly facing surface and a radially inwardly facing surface;
- a second set of the opposing faces including axially outwardly opposing faces;
- and
- a ramped surface portion on one of said axially outwardly opposing faces of said bearing body that extends to said radially outwardly facing surface.
The apparatus of claim 7, wherein said ramped surface portion extends from said first end of said bearing body to said second end of said bearing body.
The apparatus of claim 7, wherein said body includes a width between said radially outwardly facing surface and said radially inwardly facing surface and said ramped surface portion extends across 25% to 50% of said width.
The apparatus of claim 7, further comprising a chamfered surface portion on the other of said axially outwardly opposing faces of said bearing body that extends to said radially outwardly facing surface.
An apparatus, comprising:
- an internal combustion engine block and a crankshaft having associated thrust bearings that are supported in said engine block;
- at least one thrust bearing supported in said engine block, said at least one thrust bearing including:
- a semi-circular shaped bearing body with two sets of opposing faces extending from a first end of said bearing body to a second end of said bearing body;
- a first set of the opposing faces including a radially outwardly facing surface and a radially inwardly facing surface;
- a second set of the opposing faces including axially outwardly opposing faces;
- a ramped surface portion on one of said axially outwardly opposing faces of said bearing body that extends to said radially outwardly facing surface;
- and
- a chamfered surface portion on the other of said axially outwardly opposing faces of said bearing body that extends to said radially outwardly facing surface, wherein said chamfered surface is positioned toward the internal combustion engine block and said ramped surfaced is positioned toward the crankshaft.
A bearing assembly, comprising:
- a semi-circular shaped bearing body with first opposing faces adjacent second opposing faces extending between a first end of the bearing body to a second end of the bearing body, the first opposing faces including a radially outward face and a radially inward face, and the second opposing faces including axially outward faces;
- and
- a plurality of ramped surface portions on the bearing body, a first ramped surface portion of the plurality of ramped surface portions provided on one of the axially outward faces and extending to the radially outward face.
Dependencies are inferred from the claim text.