Invention Grant
- Patent Title: Method of manufacturing fuel rail for gasoline direct injection
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Application No.: US16699113Application Date: 2019-11-29
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Publication No.: US11015231B2Publication Date: 2021-05-25
- Inventor: Koichi Hayashi
- Applicant: USUI CO., LTD.
- Applicant Address: JP Shizuoka
- Assignee: USUI CO., LTD.
- Current Assignee: USUI CO., LTD.
- Current Assignee Address: JP Shizuoka
- Agency: Yokoi & Co, U.S.A.
- Agent Toshiyuki Yokoi
- Priority: JP2015-009969 20150122
- Main IPC: B23K1/00
- IPC: B23K1/00 ; C21D9/08 ; C22C38/12 ; F02M55/04 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/44 ; F02M55/02 ; B23K103/04 ; B23K101/04

Abstract:
To obtain, at low cost, a fuel rail that maintains low hardness and good formability before being formed into a tube stock, can be made to form a welded pipe, and has high-strength properties with which the fuel rail can withstand a high fuel pressure even when formed so as to be relatively thin. A fuel rail for gasoline direct injection that is used at a fuel pressure of at least 30 MPa and is formed from an iron-alloy welded pipe. The fuel rail comprises an iron alloy that contains chemical components of C, Si, Mn, P, S, Nb, and Mo. The plate thickness t and the outer diameter D of the fuel rail have a ratio t/D of 0.2 or less. A bainitic structure can be precipitated by brazing the fuel rail in a furnace during manufacturing.
Public/Granted literature
- US20200095647A1 Method of manufacturing fuel rail for gasoline direct injection Public/Granted day:2020-03-26
Information query
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