Abstract: 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.

Abstract: A fuel connector has a projection with a threaded external surface that mates with the threaded internal surface of a fuel injection valve fitting, and also has a sleeve surrounding the fitting. An O-ring engages the internal surface of the sleeve and the external surface of the fitting and allows the valve to be rotated relative to the connector without breaking the sealing engagement between the valve and the connector.

Abstract: A fuel rail assembly for a V engine has a pair of fuel rails connected by crossover and discharge conduits. The crossover and discharge conduits are secured to the fuel rails in a manner which permits relative motion between the fuel rails without loss of fuel from the fuel rail-conduit intersection.