Abstract: The invention relates to a parallel crank drive (10), particularly for an internal combustion engine (11) having variable compression ratio, having: a first and a second clutch body (20, 21) that can each be connected to a first or second shaft (14, 19); —at least one clutch element (22) rotatably supported on both clutch bodies; —a housing (23) encompassing the clutch bodies and clutch elements. The invention further relates to an internal combustion engine having variable compression ratio, having: a pivotally supported crankshaft (14); —drive shaft (19); —parallel crank drive (10) between the crankshaft and drive shaft; —a housing (23) encompassing the parallel crank drive. The invention further relates to a manual transmission, particularly for an internal combustion engine (11) having variable compression ratio, having: an input shaft (19) that can be connected to a pivotally supported crankshaft (14); the parallel crank drive (10) between the crankshaft and input shaft.

Abstract: The present invention relates to a drive mechanism of an electric vehicle that is realized only by means of one or more electric motors that are connected to at least one storage battery, wherein a generator is provided that can be connected for supplying energy to the drive mechanism, wherein the generator is coupled to a Wankel engine that drives only the generator when needed, but delivers no driving power as torque to the drive train of the electric motor or motors of the drive mechanism. A method for operating an electric vehicle is also presented.