Patent ID: 8479701
Filing Date: 2013-07-09
Classification: F01L,Y10T

Abstract:
1. An engine comprising: a cylinder head at least partially defining: a valve seat disposed within the stepped portion and configured to make sealing contact with the valve to fluidly isolate the valve opening from the combustion chamber; a pocket filler disposed within the stepped portion and between the cylinder head and the valve seat, the pocket filler formed from an elastic material configured to permit relative movement between the valve seat and the cylinder head; wherein the cylinder head, the valve seat, and the pocket filler collectively define both a first valve seat pocket and a second valve seat pocket; wherein the first valve seat pocket is in fluid communication with the valve opening when sealing contact is established between the valve seat and the valve; and wherein the second valve seat pocket is in fluid communication with the combustion chamber when sealing contact is established between the valve seat and the valve.