Fuel rail assemblies for internal combustion engines
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United States of America Patent
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Mar 26, 1991
Issued Date -
N/A
app pub date -
Aug 3, 1990
filing date -
Sep 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Fuel rail assemblies include a tubular fuel rail for supplying fuel to a fuel injector of an internal combustion engine. Rigid conduits are coupled to the fuel rail so as to allow relative rotational movements therebetween and thus permit, during production, the correction of any angular mismatch between the injectors and the engine with which the injectors are to be associated. A longitudinally extending, lateral ledge may be provided so as to support a clip which retains the injectors in the fuel rail assembly during production. Countercurrent flow within some embodiments of the fuel rail assemblies is provided by positioning an inner conduit within an outer conduit so as to establish therebetween a fuel flow passageway. Thus, the supply and discharge nipples for the fuel rail may be provided in close physical relationship with one another and thereby more easily facilitate their interconnection to a vehicle's fuel system during production.
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