Internal combustion engine having a top-down cooling concept

Abstract

The invention relates to an internal combustion engine having a top-down cooling concept, in particular with a plurality of cylinders, having a liquid-cooled cylinder head with a first cooling chamber adjoining a fire deck and a second cooling chamber, which is separated from the first cooling chamber by an intermediate deck, and which is predominantly further away from the fire deck (10) than the first cooling chamber, wherein the first cooling chamber and the second cooling chamber are flow-connected to one another in the region of the ignition device, with an intake port arrangement on an intake side and an exhaust port arrangement on an exhaust side, having, per cylinder, two intake valves, two exhaust valves, an ignition device opening centrally into a combustion chamber and an injection device opening laterally into the combustion chamber, which is arranged between a first intake port and a second intake port of the intake port arrangement. In order to enable sufficient cooling of the injection device, the first intake port and the second intake port of each cylinder in the cylinder head are routed separately starting from at least one lateral flange surface of the cylinder head, and the injection device is at least partially surrounded by a cooling chamber, which is flow-connected to the second cooling chamber or is formed as part of the second cooling chamber.

Dependencies are inferred from the claim text.