The invention relates to an internal combustion engine (1) comprising a plurality of cylinders (3,3') of which at least one is a recirculation cylinder (3'). The recirculation cylinder (3') is provided with a recirculation channel (9) for recirculation gas...

The method involves providing cylinder (12) having a combustion chamber (2) delimited by a reciprocating piston (3). An outlet valve (4) is configured for discharging combustion gases. An inlet opening (5) configured for supplying charge air. A recirculati...

The unit has an operation mode controlling unit for executing a control of a specific operation mode in a partial load range of an engine. A fuel is supplied to a burnt gas with a lean-air fuel ratio. An air fuel ratio controlling unit is controlling the r...

The engine has at least one additional exhaust port with a second exhaust valve connected to an exhaust gas feedback manifold, which is connected to an induction pipe via an exhaust gas feedback valve. The second valve is opened during a working stroke if ...