W6-motor

A W6 engine, comprising:

• two W3 engine units disposed juxtaposed on a common crankshaft, said engine units having juxtaposed cylinders with pistons driving the common crankshaft;
• wherein said juxtaposed cylinders in said W3 engine units have axes enclosing a common bank angle of 30 to 70°;
• each said cylinder having at least two intake valves and at least one exhaust valve, and exhaust pipes of said cylinders leading to an exhaust;
• said intake valves for the individual said cylinders of said two W3 engine units being disposed in wall portions of the respective said cylinders that are oriented in the same circumferential direction about the crankshaft or in lateral portions of their cylinder block;
• said at least one exhaust valve for the individual said cylinders of said two W3 engine units being disposed in wall portions of the respective said cylinders or cylinder blocks that are oriented in the same, but opposite, circumferential direction about the crankshaft as the wall portions in which said intake valves are disposed;
• wherein a predetermined number of side-valve exhaust valves and side-valve intake valves are disposed in or on mutually opposed wall portions of a V-shaped space bounded by said juxtaposed cylinders in the respective said W3 engine units;
• and
• each said exhaust valve closing each of said exhaust pipes, leading from a valve seat of each said exhaust valve to a lateral or outer surface of the respective said W3 engine unit in which said cylinder with said exhaust valve is disposed and which faces away from the respective other said W3 engine unit.