Engine with cylinders in narrow V-arrangement

The engine has a single cylinder block (1',1'') with cylinder walls (4) in two mutually inclined rows, a common crankshaft (16) in main bearings (10) and at least one overhead camshaft (20',20'') in the cylinder head (3). The cylinder head is in one piece with the cylinder block, the cylinder walls end in floors (5) normal to their axes and the main bearings are bearing blocks (11) bolted to the cylinder block.