Gm Global Technolgoy Operations, Inc.

David C Shuler

Edgar Samuel Eshleman

Charles E Finn

Allan M Ruckey

A fuel rail for the distribution of fuel to a plurality of fuel injectors is disclosed. The fuel rail includes a longitudinal conduit having injector sockets disposed at spaced intervals and a fuel inlet. Fuel is distributed through the conduit to the various injector sockets for delivery, through associated electromagnetic fuel injectors, to the intake system of an internal combustion engine. A compliant damper is disposed in the fuel conduit and is operable to lower peak pressure pulsations initiated by the firing of the fuel injectors. The fuel damper is supported within the conduit by a keyed damper support which engages the damper. The damper support is keyed with the conduit so as to position the damper axially and rotationally within the conduit to prevent interference with fuel flow to the injector sockets.

Fuel rail

A single pressure regulator controls fuel flow in series through a pair of throttle body injection assemblies adapted to be mounted in remotely spaced locations on an engine intake manifold. The pressure regulator is located in the second assembly, while the first assembly has an accumulator which minimizes pressure fluctuations. The injector in the second assembly has a greater fuel flow capacity than the injector in the first assembly to compensate for the pressure drop caused by the flow restriction between the two assemblies and permit the injectors to provide equal fuel delivery.

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Rochester, NY, United States of America

David C Shuler