Cooling arrangement and method with selected surfaces configured to inhibit changes in boiling state

An internal combustion engine having coolant passages that form a part of an engine coolant circuit and that utilize a coolant having a boiling state, comprising:

• a cylinder head having an intake port and an exhaust port, the exhaust port being configured to direct gases from a combustion chamber, the cylinder head also including a valve bridge disposed between the intake port and the exhaust port;
• and
• a coolant circuit having at least one coolant passage disposed through the cylinder head, the at least one coolant passage having surface walls configured to direct the coolant in the coolant circuit to provide cooling to the cylinder head, and the at least one coolant passage having a high-heat surface having a tendency to experience high heat flux in comparison to adjacent surfaces in the coolant circuit;
• wherein at least a portion of the surface walls of the at least one coolant passage include a surface configuration including a plurality of cavities in said high-heat surface, said surface configuration tending to inhibit departure from nucleate boiling in the coolant.