HYDRAULIC MOTOR-PUMP-ARRANGEMENT AND HYDRAULIC SYSTEM FOR A VEHICLE

摘要

An arrangement (2) for selectively making available hydraulic power in separate hydraulic circuits comprises two displacement machines (4, 6), two free-wheels (8, 10) and a drive unit (12) that is preferably arranged between the displacement machines (4, 6). The free- wheels block in opposite directions and are coupled to the displacement machines. Consequently, the first displacement machine (4) is driven in a first rotating direction of the drive unit (12) while the second displacement machine (6) is only driven in a second, opposite rotating direction of the drive unit. This makes it possible to realize an intermittent operation for selectively making available additional hydraulic power in separate hydraulic subsystems by choosing the rotating direction accordingly. This arrangement can reduce the weight and the complexity of a hydraulic system.