Turbulent jet ignition internal combustion engine with pre-chamber having a duct for exhaust gas recirculation

An internal combustion engine for a motor vehicle, the internal combustion engine comprising:

• a cylinder;
• a cylinder head arranged to cover the cylinder;
• a piston slidingly coupled to the cylinder inside the cylinder between a lower dead centre and an upper dead centre respectively further and closer than the cylinder head;
• a first chamber defined between the cylinder, the cylinder head, and the piston;
• a second chamber distinct from the first chamber and communicating with the first chamber via one or more ports formed on at least one component between the cylinder head and the cylinder;
• fuel inlet means configured to introduce a fuel mixture into at least one between the first and second chambers;
• an ignition device arranged at the second chamber and configured to ignite the fuel mixture in the second chamber;
• and
• a vent line configured to vent gas from the second chamber, the vent line having an inlet end arranged at the second chamber.