초록 ▼

An intake system for an internal combustion engine includes a cylinder head and an intake manifold attached to the cylinder head. A labyrinth seal is interposed between the intake manifold and the cylinder head, with the labyrinth seal including a projection formed in one of the intake manifold and

An intake system for an internal combustion engine includes a cylinder head and an intake manifold attached to the cylinder head. A labyrinth seal is interposed between the intake manifold and the cylinder head, with the labyrinth seal including a projection formed in one of the intake manifold and cylinder head, and a mating receptacle formed in the other of the intake manifold and a cylinder head.

대표청구항 ▼

1. An intake system for an internal combustion engine, comprising: a cylinder head;an intake manifold attached to said cylinder head; anda labyrinth seal interposed between said intake manifold and said cylinder head, wherein said labyrinth seal comprises a projection formed in one of said intake ma

1. An intake system for an internal combustion engine, comprising: a cylinder head;an intake manifold attached to said cylinder head; anda labyrinth seal interposed between said intake manifold and said cylinder head, wherein said labyrinth seal comprises a projection formed in one of said intake manifold and said cylinder head, and a mating receptacle formed in the other of said intake manifold and said cylinder head. 2. An intake system according to claim 1, wherein said labyrinth seal extends only between adjacent runners of said intake manifold. 3. An intake system according to claim 1, wherein said intake manifold comprises a plurality of intake runners extending to a common mounting flange, with said mounting flange having a perimeter sealing region extending about only an outer periphery of the mounting flange. 4. An intake system according to claim 1, wherein said labyrinth seal comprises a plurality of projecting tongue elements molded upon a mounting flange through which a plurality of intake runners extend, and a plurality of mating grooved receptacle elements formed in said cylinder head. 5. An intake system according to claim 4, wherein said tongue elements are molded as one-piece with the parent material of said mounting flange. 6. An intake system according to claim 1, wherein said labyrinth seal comprises a plurality of grooved receptacle elements molded within a mounting flange through which a plurality of intake runners extend, and a plurality of mating projecting tongue elements formed upon said cylinder head. 7. An intake system according to claim 6, wherein said tongue elements are molded from the parent material of said cylinder head. 8. An intake system according to claim 1, wherein said intake manifold comprises a one-piece plastic molding comprising: a plenum;a mounting flange;a plurality of intake runners extending between said plenum and said mounting flange;a perimeter gasket region extending about only an outer periphery of the mounting flange; anda portion of said labyrinth seal extending transversely across said mounting flange between adjacent ones of said intake runners. 9. An intake system according to claim 8, wherein said portion of said labyrinth seal comprises a projecting tongue formed upon said mounting flange, with said tongue being formed from the parent material of said mounting flange. 10. An intake system according to claim 8, wherein said portion of said labyrinth seal comprises a grooved receptacle formed upon said mounting flange. 11. An intake system according to claim 1, wherein said cylinder head comprises a lower intake manifold and said intake manifold comprises an upper intake manifold joined to said lower intake manifold. 12. An intake system for an internal combustion engine, comprising: a cylinder head;an intake manifold attached to said cylinder head, with said intake manifold comprising:a plenum;a mounting flange;a plurality of intake runners extending between said plenum and said mounting flange;a perimeter gasket region extending about only an outer periphery of the mounting flange; anda labyrinth seal interposed between said mounting flange of said intake manifold and said cylinder head and located between adjacent ones of said intake runners, wherein said labyrinth seal comprises a tongue formed in one of said intake manifold and said cylinder head, and a mating groove formed in the other of said intake manifold and said cylinder head. 13. An intake system according to claim 12, wherein said intake manifold comprises at least one plastic molding including said tongue. 14. An intake system for an internal combustion engine, comprising: a cylinder head having a lower intake manifold attached thereto;an intake manifold attached to said lower intake manifold, with said intake manifold comprising:a plenum;a mounting flange;a plurality of intake runners extending between said plenum and said mounting flange;a perimeter gasket region extending about only an outer periphery of the mounting flange; anda labyrinth seal interposed between said mounting flange of said intake manifold and said lower intake manifold and located between adjacent ones of said intake runners, wherein said labyrinth seal comprises a tongue formed in one of said intake manifold and said lower intake manifold, and a mating groove formed in the other of said intake manifold and said lower intake manifold.