Patent ID: 8899207

Claim:
A cylinder head for an engine, the cylinder head comprising: a valve seat arrangement for a cylinder of the engine, the valve seat arrangement comprising at least two inlet valve seats on an inlet valve seat axis at an angle in a range of 30 to 60 degrees to a major axis of the engine, and at least two exhaust valve seats on an exhaust valve seat axis at an angle in a range of 30 to 60 degrees to the major axis of the engine; an upper deck, an intermediate deck and a fire deck; an upper coolant jacket between the upper deck and the intermediate deck; a lower coolant jacket between the intermediate deck and the fire deck, wherein the lower coolant jacket and the upper coolant jacket are in fluid communication such that a fluid coolant, when contained in the cylinder head, flows from the lower coolant jacket to the upper coolant jacket; a housing forming a cavity to accommodate a fuel injector or an ignitor therein, the cavity defined by a monolithic wall of the housing connecting the fire deck with the upper deck, wherein the housing has an overall height which extends from the fire deck to the upper deck; wherein the cavity to accommodate the fuel injector or the ignitor is in fluid communication with the upper coolant jacket and the lower coolant jacket; wherein the monolithic wall of the housing defining the cavity to accommodate the fuel injector or the ignitor includes a plurality of openings which provide fluid communication between the lower coolant jacket and the upper coolant jacket; and wherein the monolithic wall of the housing connecting the fire deck with the upper deck and defining the cavity to accommodate the fuel injector or the ignitor further at least partially defines a passage of an intake port or an exhaust port of the cylinder head.