Internal combustion engine with port communication

A system comprising:

• a turbocharger having a compressor;
• an internal combustion engine having:
• an outer body defining internal cavities slidingly receiving a respective one of a plurality of pistons drivingly engaged to a rotatable shaft to define combustion chambers of variable volume each undergoing a cycle defining successive phases of intake, compression, combustion and exhaust;
• for each of the combustion chambers, at least one inlet port in fluid communication with the combustion chamber during the intake phase and a beginning portion of the compression phase, and at least one exhaust port in fluid communication with the combustion chamber during the exhaust phase;
• a plenum in fluid communication with the compressor;
• and
• conduits in fluid communication with the plenum, each of the conduits defining a fluid communication between a first respective one of the combustion chambers and a second respective one of the combustion chambers through the at least one inlet port of the first and second respective one of the combustion chambers;
• wherein the first respective one of the combustion chambers undergoes the beginning portion of the compression phase simultaneously with the second respective one of the combustion chambers undergoing a beginning portion of the intake phase;
• whereby each of the conduits allows for compressed air overflowing from the at least one inlet port of the first respective one of the combustion chambers during the beginning portion of the compression phase thereof to be fed into the at least one inlet port of the second respective one of the combustion chambers.