Molded plastic fuel rail for an internal combustion engine
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United States of America Patent
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-
Jun 11, 1991
Grant Date -
N/A
app pub date -
Sep 29, 1989
filing date -
Sep 29, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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