Abstract: The invention relates to a power-splitting hydromechanical continuously variable transmission, particularly for motor vehicles, comprising an input shaft, which provides output to a summation gearbox mechanically on the one hand and via a hydrostatic pump unit, a volume control valve, and a hydraulic motor on the other hand, the summation gear, wherein the summation gearbox is a planetary gearbox, the gear elements of which are drivably connected at least to the input shaft, the hydraulic motor, and an output shaft.