Patent ID: 6328314
Filing Date: 2001-12-11
Classification: F16J

Abstract:
A cylinder head gasket including first and second gasket substrates disposed in overlapping relationship, provided between a cylinder head and a cylinder block and having a combustion chamber opening formed therein in alignment with a cylinder bore, characterized in that:the first gasket substrate is disposed toward the cylinder head and formed with a first inner projection surrounding the combustion chamber opening and projecting toward the cylinder head and a first outer projection surrounding the first inner projection and projecting toward the cylinder head; the second gasket substrate is disposed toward the cylinder block and formed with a second inner projection surrounding the combustion chamber opening and projecting toward the cylinder block and a second outer projection surrounding the second inner projection and projecting toward the cylinder block; a clearance is defined between the first and second inner projections and a clearance is defined between the first and second outer projections; a first plate having a combustion chamber opening aligned with the cylinder bore is disposed in overlapping relationship with the first gasket substrate and has a first full bead formed thereon which surrounds the combustion chamber opening and projects toward the first inner projection and a first half bead formed thereon which is disposed outside of the first full bead and projects toward the first outer projection; a second plate having a combustion chamber opening aligned with the cylinder bore is disposed in overlapping relationship with the second gasket substrate and has a second full bead formed thereon which surrounds the combustion chamber opening and projects toward the second inner projection and a second half bead formed thereon which is disposed outside of the second full bead and projects toward the second outer projection; and the first and second gasket substrates are compressed between the cylinder head and the cylinder block to cause plastic deformation of the first and second inner projections toward the clearance defined therebetween.