Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1992-08-13
1993-03-30
Cross, E. Rollins
Internal-combustion engines
Charge forming device
Fuel injection system
123468, 123469, F02M 5502
Patent
active
051974355
ABSTRACT:
An injection molded fuel injection rail for an automotive engine. The fuel rail is designed to supply fuel to a plurality of electromagnetic fuel injectors oriented at acute angles relative to vertical. The socket inlet apertures through which fuel is fed from the rail interior into the respective fuel injector sockets are located in the bottom of the rail. This prevents the ingestion of vapor, which is normally present in the upper portion of the rail, into the injectors. In order to maintain both sides of these socket inlet apertures at substantially the same level the tilted injector sockets are provided with an occlusive lip along the high side of each inlet aperture. Additionally, the tilted socket axes may be offset laterally downward from the longitidinal rail axis. A plug type fitment is used to close the barrel core pin opening at one end of the rail. It is retained in the opening by a zero compressive load retainer which engages a cooperating annular shoulder structure formed on that end of the rail. To insure uniform distribution of the plastic injected into the mold and to prevent relative movement of the core pins by the force of the injected plastic during the molding process, a sprue site is located above each fuel injector socket in offset parallel alignment with the socket axis.
REFERENCES:
patent: 4519368 (1985-05-01), Hudson, Jr.
patent: 4776313 (1988-10-01), Freismuth et al.
patent: 4798187 (1984-01-01), Hudson, Jr.
patent: 4805575 (1989-02-01), de Concini et al.
patent: 4971014 (1990-11-01), Usui
patent: 4996961 (1991-03-01), Usui
patent: 5044338 (1991-09-01), Shelton
patent: 5056489 (1991-10-01), Lorraine
patent: 5062405 (1991-11-01), Daly
patent: 5074269 (1991-12-01), Herbon et al.
patent: 5076242 (1991-12-01), Parker
patent: 5094211 (1992-03-01), Mahnke et al.
patent: 5105787 (1992-04-01), Imoehl
patent: 5136999 (1992-08-01), Bassler et al.
Bucci George H.
Mazur Richard J.
Taylor James D.
Cross E. Rollins
Mensing Harold F.
Moulis Thomas
Walbro Corporation
LandOfFree
Molded fuel injection rail does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Molded fuel injection rail, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molded fuel injection rail will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1274540