PRESSURE CONTROLLED DYNAMIC SEAL WITH CAPTURED FLUID TRANSFER TUBES

摘要

A system and method for fluidly sealing a cylinder head interface between an engine block and a cylinder head of an internal combustion engine. An example apparatus includes a perimeter seal disposed on an outer periphery of the cylinder head. The perimeter seal has a first surface to abut a cylinder head sealing surface and a second surface to abut an engine block sealing surface. The perimeter seal is configured to prevent fluid from an external environment from entering the cylinder head interface and to allow fluid within the cylinder head interface to vent to the external environment when the fluid is above a predetermined pressure. A first fluid transfer tube seal fluidly seals a first fluid transfer orifice extending between the engine block and the cylinder head. The perimeter seal and the first fluid transfer tube seal are formed as a unitary structure.

主权项

1. An internal combustion engine, comprising:
an engine block defining a cylinder bore and a first fluid transfer orifice; a cylinder head coupled to the engine block, the cylinder head defining a second fluid transfer orifice in fluid communication with the first fluid transfer orifice, wherein an external environment surrounds the engine block and the cylinder head; and a cylinder head seal positioned at an interface between the engine block and the cylinder head, the cylinder head seal comprising:
a perimeter seal disposed on an outer periphery of the cylinder head, the perimeter seal configured to prevent fluid from the external environment from entering the interface and to allow fluid within the interface to vent to the external environment when the fluid is above a predetermined pressure, anda first fluid transfer tube seal to fluidly couple the first fluid transfer orifice and the second fluid transfer orifice,wherein the cylinder head seal apparatus is formed as a unitary structure.