The method involves producing a pressing force in the course of actuation of a compression ratio varying mechanism to vary a compression ratio. The pressing force is applied to a piston head and a crank casing to reduce the transmission torque of the rotat...

A spring-supported crankshaft coupling structure (2) used in an engine and coupled between a piston (51) and a crankshaft to enhance the output torque of the engine is disclosed to include a connector (53) axially movably coupled to the piston (51) by a sl...

Device for displacing a cylinder block (1) and head relative to a crankcase has a connecting line (5) of bearing eyes or arms of the cylinder block lying vertical to the cylinder axis (9). The bearings of the adjusting shafts (4) and their cams run in the ...