Cylinder liner and cylinder bore
US12116951B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
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Key dates
| Filing date | Jun 11, 2020 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F1/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Provided is a cylinder liner which can reduce the friction of the sliding surface from conventional levels and improve fuel efficiency without increasing oil consumption from conventional levels.When the inner circumferential surface of a cylinder liner or cylinder bore used in an internal combustion engine has a first sliding region, a second sliding region, and a third sliding region, and when respective surface roughness Rvk is from 0.05 μm to 0.3 μm, from 0.4 μm to 1.5 μm, and from 0.15 μm to 0.7 μm, a friction can be reduced while maintaining oil consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.