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US 2020/0003302 A1Published application
Wheel Drive Assembly for a Hydrostatic Traction Drive and Hydrostatic Traction Drive
AssigneeRobert Bosch GmbH
InventorsRonny Herrmann, Matthias Mueller, Peer Mumcu
Life of this patent
Estimating the term…
Abstract
In a hydraulic motor and a hydrostatic traction drive with such a hydraulic motor, the regulating of the displacement of the hydraulic motor is done via a pilot-operated pressure regulator. The feedforward controller calculates an estimated motor displacement and relays this to the pressure regulator.
Claims12
A wheel drive assembly for a hydrostatic traction drive comprising:
- a hydraulic motor comprising an electrical adjusting unit configured to adjust a motor displacement of the hydraulic motor so as to dictate a constant or continuous relation between a motor drive current and the motor displacement;
- and
- an electronic control unit comprising:
- a pressure regulator configured to regulate the motor displacement in dependence on an actual pressure and a nominal pressure;
- and
- a feedforward controller associated with the pressure regulator and configured to preset a preset motor displacement.
3 more elements
A hydrostatic traction drive comprising:
- a wheel drive assembly comprising:
- a hydraulic motor comprising an electrical adjusting unit configured to adjust a motor displacement of the hydraulic motor so as to dictate a constant or continuous relation between a motor drive current and the motor displacement;
- and
- an electronic control unit comprising:
- a pressure regulator configured to regulate the motor displacement in dependence on an actual pressure and a nominal pressure;
- and
- a feedforward controller associated with the pressure regulator and configured to preset a preset motor displacement;
- and
- an axial piston pump comprising an adjusting unit configured to adjust a pump delivery volume of the axial piston pump.
6 more elements
Dependencies are inferred from the claim text.