FUEL RAIL AND METHOD OF MANUFACTURING SAME - HITACHI AUTOMOTIVE SYSTEMS LTD

Title:

FUEL RAIL AND METHOD OF MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2016/121473

Kind Code:

A1

Abstract:

The objective of the present invention is to provide a fuel rail which can be used with a high fuel pressure of 50 MPa or more, for example, has excellent engine mounting characteristics, and with which material yields are improved. The present invention relates to a fuel supply system in which fuel which has been compressed by a fuel pump passes through fuel passage holes in a fuel rail secured to an engine by means of a bracket or a stay, is supplied to injectors and is injected into the engine. In relation to the fuel rail which comprises a main pipe portion 10 extending in a longitudinal direction, and a plurality of distribution pipe portions 20a, 20b, 20c and 20d which branch from the main pipe portion in a lateral direction, the main pipe portion 10 and the distribution pipe portions 20a, 20b, 20c and 20d are produced by being cut out from the same single plate 100, the single plate is a slab, or a flat plate having an irregularly shaped cross section, and a main pipe hole 11, distribution pipe holes 21a, 21b, 21c and 21d, and injector attachment holes 22a, 22b, 22c and 22d are formed seamlessly, without joints.

Inventors:

KUBOTA EIICHI (JP)
HARADA KOJI (JP)
URAKI KEIICHI (JP)
NAKATANI SHINYA (JP)
ONO HIROSHI (JP)
SOMA MASAHIRO (JP)

Application Number:

PCT/JP2016/050602

Publication Date:

August 04, 2016

Filing Date:

January 12, 2016

Export Citation:

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Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

International Classes:

F02M55/02

Foreign References:

JP2011226353A	2011-11-10
JP2001159380A	2001-06-12
US20050188956A1	2005-09-01

Other References: