Fuel pump, in-cylinder direct injection type internal combustion engine using the same and surface treatment method
US6543424B1 · kind B1 · utility
11Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Nov 6, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a fuel pump pressurizing fuel and supplying the fuel to a fuel injection valve of a vehicle engine, a hardened layer of at least one selected from a nitride layer, a carburated and quenched layer and a carbonitrided layer, and a metal compound layer, on a surface of the hardened layer, higher in corrosion resistance than the hardened layer are formed on one of slide surfaces contacting each other and sliding in fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.