Crankshaft assembly with oiling scheme
AssigneeGM Global Technology Operations LLC
InventorsDale E. Murrish, Luke Luehr, Scott A. Hucker, Varoon Shankar, Jeremy T. Demarest
Life of this patent
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Abstract
A crankshaft assembly for a vehicle, a method of operating a crankshaft assembly, and a method of manufacturing a crankshaft assembly. The crankshaft assembly includes a crankshaft, a first pin bearing journal and a main journal, an oil passage having a main passage wall, the oil passage extending from the first pin bearing journal to or through the main bearing journal, a crankpin exit hole located in the main passage wall, and a blocking element positioned in the oil passage, wherein the blocking element is located in a radially outward position with respect to the crankpin exit hole.
Claims18
A crankshaft assembly for a vehicle, comprising:
- a crankshaft;
- a first pin bearing journal;
- a main bearing journal;
- an oil passage having a main passage wall, the oil passage extending from the first pin bearing journal to or through the main bearing journal, wherein the oil passage includes an expanded internal portion along a channel portion;
- a crankpin exit hole connecting to the main passage wall, wherein the crankpin exit hole is concentric with a cross-sectional rounded perimeter of the expanded internal portion;
- and
- a blocking element positioned in the oil passage, wherein the blocking element is located in a radially outward position with respect to the crankpin exit hole.
A crankshaft assembly for a vehicle, comprising:
- a crankshaft;
- a first pin bearing journal and a second pin bearing journal;
- a main bearing journal configured at least partially between the first pin bearing journal and the second pin bearing journal;
- an oil passage having a main passage wall, an expanded exit portion, a channel portion, and an expanded internal portion, wherein the oil passage includes an expanded exit portion at the first pin bearing journal and a channel portion located radially inward with respect to the expanded exit portion at the first pin bearing journal;
- a blocking element in the oil passage, wherein the blocking element is a check valve at least partially seated at a stepped transition portion between the expanded exit portion and the channel portion;
- and
- a crankpin exit hole connected to the main passage wall, wherein the expanded internal portion is located radially inward with respect to the crankpin exit hole.
A crankshaft assembly for a vehicle, comprising:
- a crankshaft;
- a first pin bearing journal;
- a main bearing journal;
- an oil passage having a main passage wall, an expanded exit portion, a channel portion, and a stepped transition portion between the expanded exit portion and the channel portion;
- and
- a crankpin exit hole connecting to the main passage wall, wherein the crankpin exit hole is located between the expanded exit portion and the channel portion in the stepped transition portion.
Dependencies are inferred from the claim text.