Cylinder head sealing system and method

U.S. Patent Number: 5343837

Abstract: A thermally conductive sealing system for the cylinder head joint of an internal combustion engine is disclosed comprising a spacer plate clamped in direct contact between the cylinder head and the cylinder block and a plurality of discrete fluid gaskets disposed across the spacer plate and clamped between the cylinder head and cylinder block. The flange of a cylinder liner is received in a bore of the spacer plate and a combustion gas seal or "fire ring" is clamped in the bore between the cylinder head and the cylinder liner flange. The combustion gas seal includes a malleable sealing ring for sealing between the cylinder head and the cylinder liner and a hardened backing ring for supporting the sealing ring. The plurality of discrete fluid gaskets includes a removable lifter compartment gasket including sealing elements attached across a substrate and a plurality of coolant ferrules for sealing across coolant ports and around cylinder head bolts.

Inventors: Ward; Lloyd A. (Washington, IL), Bock; Allyn P. (West Lafayette, IN)

Assignee: Caterpillar Inc. (Peoria, IL)

Application Number: 08/098,172

Issued: 1994-09-06

Expired: 2006-09-06

Classes: 123/193.5 ; 277/598; 277/930

Field of search: 123/193.3,193.5,193.2 277/235B,180

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