Molded plastic fuel rail for an internal combustion engine

Details Molded plastic fuel rail for an internal combustion engine Molded plastic fuel rail for an internal combustion engine

1989-09-29

1991-06-11

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123 52M, F02M 5502

Patent

active

050223712

ABSTRACT:
A molded fuel rail block for a multiple cylinder engine having a plurality of air conduits connecting the engine's air intake manifold to the individual air intake passageways provided in the cylinder head of the engine. The fuel rail block further has an injector well associated with each air conduit in which the fuel injector valves of the engine are mounted and a pressure regulator well in which a pressure regulator is mounted. A fuel delivery rail is provided in the fuel rail block which is connected to each of the injector wells and to an input of the fuel regulator well. A fuel return rail is provided in the fuel rail block generally parallel to the fuel delivery rail. The fuel return rail is connected to an exit port of the pressure regulator well. In the preferred embodiment, the air conduits, injector wells, pressure regulator well, fuel delivery rail and fuel return rail are molded from a high temperature plastic material having relatively good thermal insulation properties.

REFERENCES:
patent: 4457280 (1984-07-01), Hudson, Jr.
patent: 4475486 (1984-10-01), Kessler
patent: 4563984 (1986-01-01), Ziegler
patent: 4601275 (1986-07-01), Weinand
patent: 4690106 (1987-09-01), Nakayama
patent: 4756289 (1988-07-01), Rock
patent: 4768487 (1988-09-01), Yamamoto
patent: 4794885 (1989-01-01), Honda
patent: 4844036 (1989-07-01), Bassler
patent: 4907547 (1990-03-01), Daly
patent: 4911111 (1990-03-01), Matsunaga
patent: 4924834 (1920-05-01), Bonfiglioli

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