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US 6,460,504 B1Granted
Compact liquid lubrication circuit within an internal combustion engine
AssigneeBrunswick Corporation
InventorsGeorge E. Phillips, Wayne M. Jaszewski, John M. Griffiths
Life of this patent
Estimating the term…
Abstract
An oil lubrication circuit is provided for an internal combustion engine in which first and second paths are located within a central bore of a camshaft. Liquid lubricant is directed from a gerotor pump to an oil filter and back toward numerous lubrication points of a crankshaft by utilizing the first and second paths which flow in opposite directions and which are both concentric with a central axis of rotation of the camshaft.
Claims15
An engine, comprising:
- a first shaft supported for rotation about a first axis within said engine;
- and
- a conduit formed within said first shaft and extending along said first axis for at least a portion of the length of said first shaft, said conduit having an inlet for conducting a liquid into said conduit and an outlet for conducting said liquid out of said conduit, said conduit comprising a first path and a second path, said first and second paths extending in opposite directions generally parallel to said first axis.
An engine, comprising:
- a camshaft supported for rotation about a first axis within said engine;
- a crankshaft supported for rotation about a second axis within said engine;
- a conduit formed within said camshaft and extending along said first axis for at least a portion of the length of said camshaft, said conduit having an inlet for conducting a liquid into said conduit and an outlet for conducting said liquid out of said conduit, said conduit being a liquid lubricant conduit comprising a first path and a second path;
- and
- a tube disposed within a central bore of said camshaft, said tube defining said first path within a central opening of said tube, said second path being disposed between an outer cylindrical surface of said tube and an inner cylindrical surface of said central bore of said camshaft.
2 more elements
An engine for an outboard motor, comprising:
- a camshaft supported for rotation about a first axis within said engine;
- a crankshaft supported for rotation about a second axis within said engine;
- and
- an oil conduit formed within said camshaft and extending along said first axis for at least a portion of the length of said camshaft, said oil conduit having an inlet for conducting a liquid into said oil conduit and an outlet for conducting said liquid out of said oil conduit, said oil conduit comprising a first path and a second path extending in opposite directions generally parallel to said second axis.
1 more element
Dependencies are inferred from the claim text.