Outboard Marine Corporation

Bombardier Motor Corporation of America

Joseph Anton Pecina

Gregory J Binversie

Todd D Craft

A piston for a two-stroke direct fuel injection internal combustion engine coupled to drive a marine propulsion unit is provided. The piston has a generally cylindrical body with one or more grooves formed therein. Each groove defines an opening to receive a respective piston ring. A thermal-protection coating is applied by anodizing the interior of the grooves. The respective region of the piston cylindrical body surrounding the respective groove openings is free of the coating.

Two-stroke direct fuel injected marine engine having anodized piston ring grooves

A cylinder head gasket for use in a marine engine adapted to be cooled by the water in which the engine is running, the engine having a non-ferrous alloy cylinder head and a non-ferrous alloy engine block, both the block and cylinder head preferably being made of aluminum alloy. The gasket includes a metallic sheet forming a core, the core having upper and lower surfaces, layers of facing material securely disposed upon those upper and lower surfaces, and wherein the electrolytic solution potential of the metallic sheet is approximately equal to the respective electrolytic solution potentials of the engine block and the cylinder head.

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Lindenhurst, IL, United States of America

Joseph Anton Pecina