Ti alloy poppet valve and surface treatment thereof
US6131603A · kind A · utility
13Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Oct 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7036
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A poppet valve in an internal combustion engine of a vehicle consists of a valve body which comprises a valve stem and a valve head at one end of the valve stem. An oxidized layer is formed on portions of the valve body which contacts another valve-operating member. On the oxidized layer, a carburized layer is formed to cover the whole surface to increase wear resistance and fatigue strength of the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.