Fuel system including a fuel injector directly mounted to a fuel rail

A fuel system comprising:

• a fuel rail having a body with an interior surface defining a volume, an exterior surface surrounding the interior surface, and at least one aperture disposed between the interior and exterior surfaces in fluid communication with the volume;
• and
• at least one fuel injector having an inlet tube with an inside surface defining a flow path through a portion of the fuel injector and an outside surface surrounding the inside surface, the flow path in fluid communication with the volume;
• and
• a rigid connection between at least one of the interior and exterior surfaces of the fuel rail and the outside surface of the inlet tube that secures and hermetically seals the fuel rail with the at least one fuel injector, the rigid connection is between the exterior surface of the fuel rail and the outside surface of the inlet tube, the exterior surface of the fuel rail comprises a projection, the rigid connection between the projection and the outside surface of the inlet tube the projection is disposed on and extends away from the exterior surface of the fuel rail, wherein the projection is formed by disposing an adapter surrounding the at least one aperture of the fuel rail.

A method of reducing hydrocarbon leakage within a fuel system, comprising:

• providing an least one aperture in a fuel rail with a body having an interior surface to define a volume and an exterior surface surrounding the interior surface, the at least one aperture in fluid communication with the volume;
• rigidly connecting an inlet tube of at least one fuel injector with at least one of the interior and exterior surfaces of the fuel rail that surrounds the at least one aperture to secure and hermetically seal the inlet tube to the fuel rail with the volume of the fuel injector, the rigidly connecting comprises rigidly connecting the inlet tube with the exterior surface of the fuel rail;
• and
• forming a projection on the exterior surface of the fuel rail that extends away from the volume and surrounds the aperture, wherein the forming of the projection comprises forming the projection by disposing an adapter on the exterior surface that surrounds the at least one aperture.