Power split continuously variable transmission with at least four travel ranges

A continuously variable power-split transmission with at least four driving ranges, within which a gear ratio is continuously variable in an area of a variator,

• a first planetary gearset comprising first, second, third and fourth shafts being functionally connectable, via a plurality of shifting elements, with a second planetary gearset that comprises a plurality of shafts,
• the second planetary gearset being functionally connectable with a transmission output shaft,
• the first planetary gearset comprising the first, the second, the third and the fourth shafts and being functionally connectable, by way of the first shaft, with a transmission input shaft and a first shaft of the variator and by, way of the second shaft, being functionally connected to a second shaft of the variator,
• the first planetary gearset being coupled, by way of the third shaft, to shifting element halves of two shifting elements and, by way of the fourth shaft, being coupled to a shifting element half of a further shifting element,
• first and second driving-direction clutches being engagable in and disengagable from a force flow, and
• gearwheel pairs associated with the first and the second driving-direction clutches, such that a rotational direction of the transmission output shaft corresponds to a rotational direction of the transmission input shaft when the first driving-direction clutch is engaged and is different therefrom when the second driving-direction clutch is engaged, and the transmission input shaft being functionally connectable with the first shaft of the first planetary gearset, via the first and the second driving-direction clutches, or the transmission output shaft being functionally connectable with the second planetary gearset, via the first and the second driving-direction clutches.