Additive-containing, dissolvable coating on engine part that contacts oil
AssigneeGeneral Motors Corporation
InventorFrank Caracciolo
Life of this patent
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Abstract
An engine part that contacts oil during engine operation has a coating layer that provides one or more oil additives into the oil during a desired period of engine use. The coating layer includes one or more oil additives that are incorporated into the oil over the period of engine use as well as a coating matrix that releases the additive(s), e.g. by dissolution or diffusion of the additive(s), into the oil over the desired period of engine use. The additives replenish the oil to maintain or improve oil performance over the period of engine use.
Claims22
An engine part that contacts oil during engine operation, comprising a coating that releases one or more oil additives into the oil during a desired period of engine use, wherein the engine part comprises a permanent engine part.
An engine oil pan, comprising a coating on its interior, wherein said coating comprises a continuous matrix material and an oil additive.
A method of introducing an oil additive into engine oil, comprising a step of incorporating into an engine a permanent engine part that contacts oil during engine operation, wherein said engine part comprises a coating that release one or more oil additives into the oil during a desired period of engine use.
A method of introducing an oil additive into engine oil, comprising a step of applying a coating comprising at least one oil additive to an area of an engine oil pan that contacts oil during engine operation, wherein said coating is designed to release the at least one oil additive into the oil at a desired rate.
Dependencies are inferred from the claim text.