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The internal combustion engines require an efficient cooling system, the high temperatures generates at the time of combustion, reaching 2500 K peak burned gas. The materials used in the construction of the cylinder must operate within a maximum value, as well as the fluid film of lubricant oil. A bad dimensioned cooling system can lead to serious consequences such as loss of engine performance and/or efficiency, pre-ignition and increased exhaust emissions and may even lead to the destruction of the engine. In the torch ignition system overheating of the pre-chamber is even more critical and may lead to significant losses. Thus the torch ignition system requires an efficient cooling to prevent deterioration of the pre-chamber and consequently the engine caused by overheating. The solution proposed to resolve this inconvenience is the use of the cooling gallery in the cylinder head, for cooling the pre-chamber that is selected.