INTERNAL COMBUSTION ENGINE WITH DEACTIVATION OF PART OF THE CYLINDERS AND CONTROL METHOD THEREOF

摘要

Internal combustion engine (1) provided with a plurality of cylinders (2) divided into a first group and a second group; a control unit '(16) for deactivating all the cylinders (2) of the second group; a first exhaust conduit (7a) and a second exhaust conduit (7b) , which are reciprocally connected at an intersection (17) and which are respectively connected to cylinders (2) of the first group and to cylinders (2) of the second group; a catalyser (19), which is arranged along the first exhaust conduit (7a) upstream of the intersection (17) and is provided with first sensors (20) for detecting the exhaust gases; and a second catalyser (21) , which is arranged downstream of the intersection (17) and is provided with second sensors (22) for detecting the exhaust gas composition.