Fuel injector mounting arrangement
OwnerMasahiko Katoinventor
Life of this patent
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Abstract
A mounting arrangement for a fuel injector comprises a cylinder head, a mounting bore formed in the cylinder head, a seat surface formed within the mounting bore, a fuel injector positioned within the mounting bore and comprising a seating surface, at least one sealing ring disposed about a portion of the fuel injector and positioned between the seating surface and the seat surface. The ring comprises a thermal insulator material and a resin material. The ring also comprises a deformable eyelet that expands radially inward in response to compressive axial forces. The resin material thermally activates at a temperature within the operating temperature range of the engine.
Claims19
A sealing ring for a fuel injector mounting arrangement in which a fuel injector is mounted for direct injection into a combustion chamber, said ring comprising a first layer of heat insulating material, a second outer layer of a thermally activatable material.
A method of sealing a fuel injector within a cylinder head of an engine, said method comprising placing at least one sealing ring into a mounting bore of said cylinder head, positioning a fuel injector through said sealing ring, applying a compressive force to secure said fuel injector in position within said mounting bore, and heating said cylinder head to melt a component of said ring.
Dependencies are inferred from the claim text.