| 摘要 |
<p>A combination of a cylinder 62 of an internal combustion engine and a piston ring 40 for sliding an inner periphery of the cylinder, wherein at least a sliding face of the cylinder is composed of an aluminum alloy including 8 mass% to 22 mass% of Si and at least one or more particles selected from the group consisting of Si, Al 2 O 3 and SiO 2 particles each having a diameter of 3 µm or more, and at least an outer periphery of the piston ring is coated with a hard carbon coating 14 composed only of hydrogen and carbon.</p> |
