Hydrostatic transmission assembly and system
AssigneeProject Phoenix, LLC
InventorThomas Afshari
Life of this patent
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Abstract
A hydrostatic transmission system includes a fluid-driven motor and an integrated pump assembly connected to the fluid-driven motor to provide fluid to operate the fluid-driven motor. The integrated pump assembly includes a pump with at least one fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The hydrostatic transmission system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover to exclusively adjust at least one of a flow and a pressure in the hydrostatic transmission system to an operational set point.
Claims18
A hydraulic system comprising:
- a hydraulic motor;
- a hydraulic pump connected to the hydraulic motor, the hydraulic pump to provide hydraulic fluid to operate the hydraulic motor, the hydraulic pump including,
- a first fluid driver with a first variable torque motor and a first gear having a plurality of first gear teeth, and
- a second fluid driver with a second variable torque motor and a second gear having a plurality of second gear teeth;
- and
- a controller that establishes a torque of the hydraulic pump to exclusively adjust at least one of a flow or a pressure in the hydraulic system,
- wherein the controller includes a plurality of operational modes including at least one of a flow mode, a pressure mode, or a balanced mode.
A hydraulic system comprising:
- a hydraulic motor;
- a hydraulic pump connected to the hydraulic motor, the hydraulic pump to provide hydraulic fluid to operate the hydraulic motor, the hydraulic pump including,
- a first fluid driver with a first variable torque motor and a first gear having a plurality of first gear teeth, and
- a second fluid driver with a second variable torque motor and a second gear having a plurality of second gear teeth;
- and
- a controller that establishes a torque of the hydraulic pump to exclusively adjust at least one of a flow or a pressure in the hydraulic system,
- wherein the controller includes one or more curves for the hydraulic pump that convert command signals to appropriate torque demand signals to the hydraulic pump based on a design of the hydraulic pump.
A hydraulic system comprising:
- a hydraulic motor;
- a hydraulic pump connected to the hydraulic motor, the hydraulic pump to provide hydraulic fluid to operate the hydraulic motor, the hydraulic pump including,
- a first fluid driver with a first variable torque motor and a first gear having a plurality of first gear teeth, and
- a second fluid driver with a second variable torque motor and a second gear having a plurality of second gear teeth;
- and
- a controller that establishes a torque of the hydraulic pump to exclusively adjust at least one of a flow or a pressure in the hydraulic system,
- wherein the first motor is disposed inside the first gear and the second motor is disposed inside the second gear, and
- wherein the first motor and the second motor are outer-rotor motors.
Dependencies are inferred from the claim text.