CYLINDER GASKET HAVING OIL DRAINBACK CONSTRAINT FEATURE FOR USE WITH INTERNAL COMBUSTION ENGINE.

摘要

A gasket for use with in an internal combustion engine having lubricating oil drainback passageways and an integrated exhaust manifold formed in the cylinder head is disclosed. The gasket includes at least one drainback passageway opening to fit substantially around the drainback passageways formed in the cylinder block. A loose component-capturing constraint feature is integrally formed with the gasket and effectively provides a bridge over the drainback passageway opening of the gasket. The constraint feature does not restrict the flow of lubricating oil and may be of any of several designs including, for example, a rib. The cylinder head gasket is preferably of a multi-layer construction and is preferably steel. The constraint feature may be a single gasket layer. The cylinder head gasket includes both active and non-active areas. The constraint feature may be either or both an active and a non-active area of the gasket.