Composite fuel rail with integral damping and a co-injected non-permeation layer

The present invention relates to an internal combustion engine fuel injection system and, more particularly, to a fuel injection system having a laminated fuel rail made of composite materials with integral pressure damping. The present invention generally includes a composite fuel rail with integral damping provided by flat sections, molded into the rail conduit, that flex in response to a pressure pulsation and a co-injected composite laminate structure wherein the compounds of the laminates can be selectively varied to provide impact resistance, chemical resistance and a vapor permeation barrier, as needed.