Fuel rail
US10145347B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Dec 25, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
To obtain a fuel rail that maintains low hardness and good formability before being formed into a tube stock, can be made to easily form a thin absorbing wall surface, and has a high hardness and pressure resistance so as to be usable not only at a fuel pressure of 400 kPa or less, but also at a relatively high fuel pressure of 400 kPa or more. A fuel rail for port injection that is provided with a fuel pressure absorbing wall surface 1 and is used at a fuel pressure of 200 kPa to 1400 kPa. The fuel rail comprises an iron alloy that includes chemical components of C, Si, Mn, P, S, Nb, and Mo. The fuel rail has an internal volume of at least 60 cc and an amount of change in internal volume, when pressure is applied, of at least 0.5 cc/MPa. A bainitic structure can be precipitated by brazing the fuel rail in a furnace during manufacturing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.