Construction converts oscillating movement of piston into rotary movement of crankshaft, piston being wholly or partly spherical which by tipping during its backward and forward movement slides and seals against cylinder wall

摘要

The construction converts oscillating movement of a piston into the rotary movement of a crankshaft, the piston being wholly or partly spherical, which by tipping during its backward and forward movement slides and seals against the cylinder wall. For optimization, the radius of the cylinder wall (5) or head follows the radius of the piston when the latter is in the top dead center position. In this position, the combustion pressure and temperature do not load directly the piston spring or packet or produce a so-called ''extinguishing gap'', which is of influence on the thermic performance. The spherical piston is immovably connected with its connecting rod (2), which in turn is connected with the crank pin (1) on the crankshaft. The radius of the piston and spring (3) is equal to half the diameter of the cylinder in which the piston moves backwards and forwards. The maximum tip angles (4) of the piston are achieved in the cranking positions 90 degrees before and 90 degrees after top dead center.