A head gasket is provided for use in an engine having a cylinder head and a cylinder liner with a side wall defining a combustion chamber, the cylinder liner including a liner flange projecting from the side wall in an outward direction away from the combustion chamber. The head gasket includes a main body layer and a flange layer coupled to the main body layer by a flange wrap portion. The flange wrap portion is sized for axial alignment with the side wall of the cylinder liner, and the flange layer is spaced from the main body layer to define a gap between the main body layer and the flange layer adjacent the flange wrap portion. A core layer is coupled to the main body layer and includes a sealing bead spaced outwardly from the flange wrap portion and sized for axial alignment with the liner flange.

Disclosed are an engine having a cylinder block and a method for manufacturing an engine having a cylinder block. The engine may include cylinder liners each having a cylinder space formed therein, a protruded portion formed on an outside circumference thereof, and a flat surface formed on one side of the protruded portion. The cylinder liners may be arranged such that the flat surfaces of adjacent cylinder liners are in close contact with one another. The engine may also include a liner covering unit formed to surround an outside of the cylinder liners, and an outer block which forms a cooling water chamber with an outside surface of the liner covering unit.

A cylinder liner seal includes an annular seal body defining a seal center axis, a first seal surface, and a second seal surface positioned opposite to the first seal surface. The first seal surface is contoured to form a first plurality of seal beads extending circumferentially around the seal center axis, and the second seal surface is contoured to form a second plurality of seal beads extending circumferentially around the seal center axis. Each of the first plurality of seal beads and the second plurality of seal beads define a plurality of peaks alternating with a plurality of troughs together forming a sinusoidal profile. A cylinder liner assembly and methodology of making the same are also disclosed.

After an anodized film is formed on the surface of an aluminum alloy part of an outboard-motor cylinder block body other than cylinder bores, sealing treatment is performed on the surface of the anodized film and finishing processing of removing the anodized film on a joining surface to expose the aluminum alloy is performed, and then a chemical conversion coating film is formed on the anodized film, which covers the inner peripheral surface of a water jacket, and the aluminum alloy on the joining surface. Accordingly, an outboard-motor cylinder block in which the aluminum alloy on the inner peripheral surface of the water jacket is covered with the sealed anodized film, the sealed anodized film is further covered with the chemical conversion coating film, and the aluminum alloy on the joining surface is covered with the chemical conversion coating film can be obtained.

The present application includes a cylinder head gasket for an internal combustion engine that includes a plurality of metal layers that together form a flange portion extending radially to or adjacent a cylinder bore, wherein the plurality of metal layers are configured to be interposed between substantially an entirety of an interface between a cylinder head and a cylinder liner of the internal combustion engine.

The present disclosure relates to an engine assembly for a vehicle. The engine assembly comprises an engine including a cylinder head and an engine block. The engine block comprises a cylinder block and a crankcase having a crankshaft. The engine may be used in different models of the vehicle having different characteristics by interchanging or replacing the cylinder head from a plurality of cylinder heads and/or a cylinder block from a plurality of cylinder blocks, while keeping one or more engine components such as the crankcase, a timing chain, or a valve cover the same. Accordingly, the engine is adaptable to different vehicles.

A system includes a block having a cylinder, a cylinder head, a cylinder liner, and a gasket. The cylinder liner includes a recess formed into a top surface of the cylinder liner. The cylinder liner is configured to line the cylinder about a piston. The gasket is disposed in the recess between the cylinder head and the cylinder liner. The recess includes a bottom surface. At least a portion of the bottom surface includes a tapered portion and a depth of the tapered portion increases along an inward radial direction of the cylinder liner.

A system includes a block having a cylinder, a cylinder head, a cylinder liner, and a gasket. The cylinder liner includes a recess formed into a top surface of the cylinder liner. The cylinder liner is configured to line the cylinder about a piston. The gasket is disposed in the recess between the cylinder head and the cylinder liner. The recess includes a bottom surface. At least a portion of the bottom surface includes a tapered portion and a depth of the tapered portion increases along an inward radial direction of the cylinder liner.

A system includes a block having a cylinder, a cylinder head, a cylinder liner, and a gasket. The cylinder liner includes a recess formed into a top surface of the cylinder liner. The cylinder liner is configured to line the cylinder about a piston. The gasket is disposed in the recess between the cylinder head and the cylinder liner. The recess includes a bottom surface. At least a portion of the bottom surface includes a tapered portion and a depth of the tapered portion increases along an inward radial direction of the cylinder liner.