Connection structure for branch pipe in high-pressure fuel rail

Details Connection structure for branch pipe in high-pressure fuel rail Connection structure for branch pipe in high-pressure fuel rail

1990-10-11

1992-12-22

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Guide and support

285197, 2853344, 285906, F16L 3500

Patent

active

051729393

ABSTRACT:
In causing a pressure head portion on the terminal of a branch pipe to be abutted and tightly pressed against a pressure receiving bearing surface formed in a through hole in a high-pressure fuel rail, the pressure bearing surface is formed in the shape of a spherical surface having a curvature radius (.gamma.) of 0.4D to 10D, wherein D is the diameter of the branch pipe. Since the branch pipe has such a spherical pressure bearing surface, a uniform surface pressure can be obtained should the branch pipe be installed in an inclined state, and such an inclination or eccentricity can be rectified by the shapes of the pressure receiving bearing surface and the pressure bearing surface to provide a uniform surface pressure.

REFERENCES:
patent: Re6488 (1875-06-01), Van Duzer
patent: 966870 (1910-08-01), Stoddard
patent: 1398985 (1921-12-01), Wadley
patent: 2098669 (1937-11-01), Moffitt
patent: 2360359 (1944-10-01), Meyers
patent: 2600162 (1952-06-01), Frontz
patent: 3036674 (1962-05-01), Branin
patent: 3362731 (1968-01-01), Gasche et al.
patent: 3437357 (1969-04-01), Rubin
patent: 4073513 (1978-02-01), Blakely
patent: 4540205 (1985-09-01), Watanabe
patent: 4832376 (1989-05-01), Sugao
patent: 4893601 (1990-01-01), Sugao
patent: 4900180 (1990-02-01), Takikawa

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