Internal combustion engine fuel rail assembly joint

Details Internal combustion engine fuel rail assembly joint Internal combustion engine fuel rail assembly joint

1991-08-05

1992-04-21

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Fuel injection system

123456, 285321, 285382, 285174, F02M 5502

Patent

active

051057875

ABSTRACT:
A metal tube, such as an inlet, outlet, return, or cross-over tube, is connected to a non-metallic fuel rail by means of a tubular sleeve that has one axial end embedded in the fuel rail coaxial with the hole with which the tube is in communication and its other axial end non-embedded. Non-metallic fuel rail material lines the interior of the sleeve from the innermost point of its embedded end to a point that stops short of the outermost point of its non-embedded end. The tube is sealed to this liner, and is prevented from coming out by a retainer, such as a crimp, retention ring or snap ring, that extends radially from the sleeve to overlap a flange that extends around the outside of the tube. The sleeve constitutes an insert onto which the fuel rail is molded during the process of fabricating the fuel rail. A plug of the mold closes off the outer end of the sleeve during molding.

REFERENCES:
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patent: 4750765 (1988-06-01), Cassidy et al.
patent: 4753459 (1988-06-01), Potier
patent: 4768587 (1988-09-01), Halder
patent: 4800925 (1989-01-01), Yeoman
patent: 5002030 (1991-03-01), Mahnke

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