Invention Grant
- Patent Title: Fuel rail for high-pressure direct-injection internal combustion engines and method for manufacturing thereof
- Patent Title (中): 用于高压直喷式内燃机的燃料轨及其制造方法
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Application No.: US13000658Application Date: 2009-06-25
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Publication No.: US08596246B2Publication Date: 2013-12-03
- Inventor: Hiroyuki Nishizawa , Haruo Nishihara , Shoichiro Usui , Koichi Hayashi , Hikari Tsuchiya
- Applicant: Hiroyuki Nishizawa , Haruo Nishihara , Shoichiro Usui , Koichi Hayashi , Hikari Tsuchiya
- Applicant Address: JP
- Assignee: Usui Kokusai Sangyo Kaisha Limited
- Current Assignee: Usui Kokusai Sangyo Kaisha Limited
- Current Assignee Address: JP
- Agent Gerald E. Hespos; Michael J. Porco; Matthew T. Hespos
- Priority: JP2008-171660 20080630
- International Application: PCT/JP2009/061635 WO 20090625
- International Announcement: WO2010/001810 WO 20100107
- Main IPC: F02M55/02
- IPC: F02M55/02

Abstract:
A fuel rail for high-pressure direct-injection internal combustion engines has an injector holder and a fastening bracket directly attached to a main body of the fuel rail. Thermal deformation may occur at the time of temporary fitting or brazing when assembling the rail. However, positional accuracy of the injector holder can be assured, which results in having an excellent sealing property. Components of the fuel rail for direct-injection internal combustion engines are made of steel or stainless steel, and the components are joined reciprocally by brazing. The components joined by brazing are finished by cutting work and/or burnishing processing after the brazing step.
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