Abstract: Internal combustion engine comprising a cylinder housing component (1) displaying a first series of cylinders (2) and a second series of cylinders (3), some pistons (6,8), two lines of crankshafts suitable for coupling at the same rotation speed through a gear train (14,16) and a variably timed transmission (10), characterized in that the variably timed transmission (10) comprises a system of channels and/or passages linked, directly and/or indirectly, to the internal channel of the coupling shaft in order to feed lubricant to the internal ring (50) extending between the bracket (18) and the sliding tube (17), as well as into one or more of the channels extending between the coupling shaft (12) and a section of the sliding tube (17).

Abstract: Internal combustion engine comprising a cylinder housing component (1) displaying a first series of cylinders (2) and a second series of cylinders (3), some pistons (6,8), two lines of crankshafts suitable for coupling at the same rotation speed through a gear train (14,16) and a variably timed transmission (10), characterized in that the variably timed transmission (10) comprises a system of channels and/or passages linked, directly and/or indirectly, to the internal channel of the coupling shaft in order to feed lubricant to the internal ring (50) extending between the bracket (18) and the sliding tube (17), as well as into one or more of the channels extending between the coupling shaft (12) and a section of the sliding tube (17).