| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To ensure a sufficient removing margin while miniaturizing a cylinder block when executing the removal work including a spray deposit film on a crank case side end of a cylinder bore. <P>SOLUTION: A rough surface 7 is formed on a cylinder bore inner surface 3a of a cylinder block 1, and a spray deposit film 5 is formed thereon. The cylinder bore block 1 has a projection 11 on an end on a crank case 9 side of a cylinder bore 3. In the projection 11, a fore end 11a thereof formed when casting the cylinder block 1 is removed, and its end face 11d is inclined. When removing the fore end 11a of the projection 11, a spray deposit film 5a in which the adhesiveness of the spray deposit film 5 in a vicinity of the projection 11 corresponding to an end in the axial direction of the cylinder bore 3 is lower than that of other parts is removed together therewith. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
