Reciprocating piston engines having piston oil cooling
AssigneePerkins Engines Company Limited
InventorWilliam Findlay Stewart
Life of this patent
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Abstract
A reciprocating piston engine in which oil cooling is provided by a hollow oil jet assembly located accurately by a location tool and pressed into position in a bore in the crankcase of the engine. Accurately drilled and aligned jet passages are formed in the assembly which is then fitted into position with good accuracy to enable accurate direction of a jet or jets of cooling oil to a desired point or points on the underside of a piston.
Claims6
A reciprocating piston engine comprising a cylinder block having a cylinder therein, a piston reciprocable in the cylinder, a crankcase, a crank rotatable on a bearing in the crankcase, a connecting rod connecting the crank to the piston, a lubricating oil passage in said crankcase, a bore formed in said crankcase between the bearing and said cylinder and meeting said oil passage, a tubular jet assembly, locating means on said jet assembly for accurately positioning said jet assembly within the engine and said jet assembly having an interference fit with said bore to retain said jet assembly's position in said bore in said crankcase, said jet assembly having a hollow interior connected to said oil passage and a jet passage accurately formed and positioned prior to assembly in said bore.
Dependencies are inferred from the claim text.