Method for manufacturing cylinder blocks

摘要

A method of manufacturing cylinder blocks. A cylinder block (11) includes cylinder liners (15-18), the number of which corresponds to the number of cylinders in the engine (51), and a block body (34) molded integrally with and about the cylinder liners (15-18). A liner assembly (12) is formed by aligning cylinder liners (15-18) in a single row and connecting the adjacent cylinder liners (15-18). A variable section (25,28,55,57) provided between each pair of cylinder liners (15-18) enables the distance between the axes (L2) of the outer cylindrical surface (20) of each cylinder liner (15-18) to be varied. The block body (34) is molded by first arranging the liner assembly (12) in a mold (36). Molten metal is then charged into the mold (36). When the metal solidifies, the block body (34) is formed encompassing the liner assembly (12). A reference point on the block body (34) is used to machine the inner cylindrical surfaces (19) and form the cylinder bores (#1-#4). <IMAGE>