Patent ID: 6622686
Filing Date: 2003-09-23
Classification: F02F

Abstract:
A cylinder head for an internal combustion engine fastenable to a cylinder block with fasteners, said the cylinder head comprising:at least one combustion chamber; at least one intake port opening provided within said at least one combustion chamber; at least one exhaust port opening provided within said at least one combustion chamber, wherein said at least one intake and exhaust port openings are opened and closed by corresponding intake and exhaust valves, respectively; a plurality of pass-through holes through which the fasteners pass, wherein each of said pass-through holes is located outside of said at least one combustion chamber; and at least one space portion separated from a corresponding coolant passageway and provided between said at least one combustion chamber and a corresponding pass-through hole, wherein said at least one space portion is located at each position where a straight line connects a center of either one of said at least one intake port opening and said at least one exhaust port opening with a center of said corresponding pass-through hole, when looking at a mating surface of said cylinder head and said cylinder block from below.