Cylinder liner and manufacturing method for same
US11499498B2 · kind B2 · utility
0Cited by
2References
19Claims
0Family size
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Key dates
| Filing date | Jul 23, 2019 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Jul 23, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F1/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cylinder liner of the present invention is a cylinder liner mounted on a cylinder block and formed of flaky graphite cast iron, at least a nitrided layer is provided on an inner periphery of the cylinder liner, and a cross hatching section is formed on the inner periphery, a roughness curve of the inner periphery has a plateau honing shape, a ten-point average roughness Rz of the inner periphery pursuant to JIS B0601:1982 is 4.0 μm or less, and an average value of an area ratio of pits generated in the inner periphery is 8% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.