Internal-combustion engine e.g. row-three-cylinder internal-combustion engine, has assembly arranged around axis, another axis provided in upper area, and balance shaft provided corresponding to third axis

摘要

The engine has an assembly rotatably arranged around a rotation axis (2), and another assembly rotatable around another rotation axis (3). A plane extending normal to an engine vertical axis (H) and along a third rotation axis (1) divides the engine into a geodetically upper area (O) and a geodetically lower area (U). A fourth rotation axis (4) is provided between the third axis and the latter axis. A fifth rotation axis (6) for a balance shaft (7) is provided in the geodetically upper area, and another balance shaft (8) is provided corresponding to the fourth rotation axis.