Abstract: The invention relates to a vehicle having a drive engine/motor (2) for driving a locomotive drive (6) and for operating at least one hydraulic working circuit (4). The vehicle, has a hydraulic accumulator (11) which is connected to a hydraulic machine (12). The hydraulic machine, (12) is connected to an output shaft (5) which connects the drive engine/motor (2) to the locomotive drive (6).

Abstract: The invention relates to an energy recovery drive. Said drive comprises a first driving shaft (3) and a second driving shaft (4). The second driving shaft (4) is connected to a hydrostatic piston engine (5). Said hydrostatic piston engine (5) is connected to a first accumulator (11) and a second accumulator (12) for accumulating pressure energy. The first drive shaft (3) and the second drive shaft (4) can be connected to each other via a gear train (6), said gear train (6) comprising at least one first gearwheel (7) and a second gearwheel (8) which is configured as a sliding gearwheel.

Abstract: The invention relates to a drive with an energy recovery and retarder function. The drive (1) comprises a hydrostatic piston engine (12) which is connected to an accumulator (16) for storing pressure energy and to a pressure limiting valve (19) for generating a braking action. Arranged downstream of the pressure limiting valve (19) is a cooler (45). The drive (1) also comprises a hydraulic motor (35) for driving a cooler fan (33), wherein the hydraulic motor (35) is acted on with a pressure medium which is delivered by the hydrostatic piston engine (12).