Cooling structure for a cylinder head of an internal combustion engine

A cooling structure for a cylinder head of an internal combustion engine with at least two exhaust valves and at least one intake valve per cylinder, wherein at least one exhaust valve bridge is located between two adjacent exhaust valves and at least two intake-exhaust valve bridges are located each between an exhaust valve and an adjacent intake valve, the cooling structure comprising a lower first cooling jacket adjacent to a fire deck and an upper second cooling jacket adjacent to an intermediate deck, the first and second cooling jackets being flow connected by at least one transfer opening of the intermediate deck, the lower first cooling jacket including at least one centre cooling chamber and an outer cooling chamber arrangement with at least one first outer cooling chamber, the first outer cooling chamber and the centre cooling chamber being flow connected by at least one exhaust side first radial passage extending in a region of the exhaust valve bridge and by at least one second radial passage, wherein the first exhaust side radial passage and the second radial passage are streamed hydraulically in parallel, wherein the outer cooling chamber arrangement of the lower first cooling jacket comprises at least one first outer cooling chamber and at least one second outer cooling chamber, which is separated from the first outer cooling chamber by at least one flow-restricting passage comprising a solid interruption or a throttle point, wherein the second outer cooling chamber is flow connected with the centre cooling chamber by at least one radial passage extending in a region of the intake valve bridge and/or in a region of the intake-exhaust valve bridge, wherein the lower first cooling jacket includes at least one cooling manifold arrangement with at least one inlet cooling manifold which is flow connected to the first outer cooling chamber and at least one transfer cooling manifold which is flow connected to the second outer cooling chamber, wherein the inlet cooling manifold is separated from the transfer cooling manifold by at least one flow-restricting passage comprising a solid interruption or a throttle point.