Common rail

A technology of common rail and metal base, applied in the field of combined common rail, can solve the problem of difficulty in manufacturing high-precision combined common rail, and achieve the effect of increasing cost and ensuring joint strength
CN100460662CInactive Publication Date: 2009-02-11DENSO CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DENSO CORP
Publication Date
2009-02-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A ring-shaped connecting portion is formed on a seat surface side of a pipe connector. The connecting portion is tapered so that thickness thereof gradually reduces toward a tip end thereof. A protrusion is formed on the tip end of the connecting portion. A ring-shaped groove is formed on a flat outer peripheral surface of a common rail. By fitting the protrusion into the groove, the connector can be positioned to a predetermined position of the common rail. In this structure, current can be concentrated to the protrusion and current density can be increased. As a result, sufficient bonding strength can be attained.
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Description

technical field

[0001] The present invention relates to a bonding method and a bonding arrangement for bonding a connection member or a mounting stay for an accumulator fuel injection system to a surface of a metal base material by welding. The present invention also relates to a common rail mounted on a common rail fuel injection system for injecting fuel into an internal combustion engine, the common rail for accumulating high-pressure fuel. In particular, the present invention relates to a bonded common rail formed by welding a plurality of parts. Background technique

[0002] When the pipe connector is joined to the common rail of the accumulator fuel injection system of the internal combustion engine, it is required that the joining portion has a certain strength and positioning accuracy.

[0003] International Publication No. 01 / 66934 (WO'934) discloses a convex positioning portion on the outer circumferential surface of a common rail. The connector is fitted to the ...

Claims

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