Series hybrid car and corresponding control method

1) A car (1) comprising:

• a frame (2), which develops along a longitudinal direction (L) having a front-rear orientation;
• at least two drive wheels (4);
• at least one electric motor (6) connected to the two drive wheels (4);
• a first generation assembly (7) comprising a first electric generator (9) and a first internal combustion engine (8) provided with a first drive shaft (11), which is mechanically connected only to the electric generator (9) and, therefore, is mechanically independent of the drive wheels (4);
• and
• a second generation assembly (7) comprising a second electric generator (9), which is mechanically independent of the first electric generator (9), and a second internal combustion engine (8) provided with a second drive shaft (11), which is mechanically connected only to the electric generator (9) and, therefore, is mechanically independent of the drive wheels (4),
• wherein the first internal combustion engine (8) is provided with a first lubrication circuit inside which a lubricating oil flows, and the second internal combustion engine (8) is provided with a second lubrication circuit (28), inside which a lubricating oil flows;
• wherein there are two interconnection ducts (29), which establish a hydraulic communication between the first lubrication circuit (28) and the second lubrication circuit (28), so that part of the lubricating oil flowing in the first lubrication circuit (28) can flow to the second lubrication circuit (28) and vice versa;
• and
• wherein there is a control unit (CU) configured to keep the lubrication circuits (28) isolated from one another, avoiding the exchange of lubricating oil, when both internal combustion engines (8) are turned on, and to establish a communication between the lubrication circuits (28), allowing for the exchange of lubricating oil, when only one of the two internal combustion engines (8) is turned on and the other internal combustion engine (8) is turned off.