HYDROSTATIC TRANSMISSION ASSEMBLY AND SYSTEM

摘要

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.

主权项

1. A hydrostatic transmission system comprising:
a hydraulic motor having first and second ports; an integrated hydraulic pump assembly conjoined with the hydraulic motor, the integrated hydraulic pump assembly to provide hydraulic fluid to operate the hydraulic motor, the integrated hydraulic pump assembly including,
a hydraulic pump having a casing defining an interior volume, the casing having a third port in fluid communication with the interior volume, and a fourth port in fluid communication with the interior volume, the hydraulic pump having least one fluid driver disposed inside the interior volume, each fluid driver having at least one of a variable-speed and a variable torque motor,a first valve assembly in fluid communication with the first and third ports, anda second valve assembly in fluid communication with the second and fourth ports; and a controller that establishes at least one of a speed and a torque of the hydraulic pump to exclusively adjust at least one of a flow and a pressure in the hydraulic system to an operational set point.