Integral intake manifold

An engine component comprising:

• stratified layers defining an intake manifold having runners each including a gas outlet leading to a cylinder head, and a plenum including partial walls forming channels radiating from a common gas inlet, the gas inlet extending outwardly into a gooseneck conduit having an incorporated exhaust gas recirculation (EGR) apparatus, the gooseneck conduit gradually transitioning into the channels and runners without a seal, and the partial walls forming an endoskeletal structure configured to support the intake manifold, and the EGR apparatus comprising a helical tube extending outward from an outer portion of the gooseneck conduit.

A method comprising:

• forming, by additive manufacturing, an internal combustion engine intake manifold of stratified layers that define runners each having a gas outlet leading to a cylinder head, and a plenum including partial walls that form channels radiating from a common gas inlet that extends outwardly into a gooseneck conduit having an incorporated positive crankcase ventilation (PCV) apparatus, exhaust gas recirculation (EGR) apparatus, or both, the gooseneck conduit transitioning into the channels and runners such that there is no seal between the gooseneck conduit, plenum, and runners, the partial walls forming endoskeletal structure configured to support the intake manifold, and shaping the EGR apparatus as a helical tube with a plurality of orifices protruding into the gooseneck conduit interior portion and being wrapped around an exterior portion of the gooseneck conduit.