Hydraulic system having a conditioning circuit
A hydraulic system includes a hydraulic circuit having a hydraulic machine, a hydraulic consumer, and a first hydraulic line fluidically connecting the hydraulic machine to the hydraulic consumer. The hydraulic system further includes a conditioning circuit having a hydraulic motor configured to withdraw a portion of hydraulic fluid flowing in the first hydraulic line from the hydraulic machine to the hydraulic consumer, the hydraulic motor configured to capture energy from the portion of hydraulic fluid, a conditioning arrangement downstream of the hydraulic motor and configured to condition the portion of hydraulic fluid, and a hydraulic pump arranged downstream of the conditioning arrangement and configured to pump the portion of hydraulic fluid into the first hydraulic line, the hydraulic pump being operably connected to the hydraulic motor and configured to operate at least partially using the energy captured by the hydraulic motor.
1 . A hydraulic system comprising:
a closed-loop hydraulic circuit comprising:
a hydraulic machine;
a hydraulic consumer; and
a first hydraulic line fluidically connecting the hydraulic machine to the hydraulic consumer; and
a conditioning circuit comprising:
a hydraulic motor configured to withdraw a portion of hydraulic fluid flowing in the first hydraulic line, the hydraulic motor configured to capture energy from the portion of hydraulic fluid;
a conditioning arrangement downstream of the hydraulic motor and configured to condition the portion of hydraulic fluid;
a hydraulic pump arranged downstream of the conditioning arrangement and configured to pump the portion of hydraulic fluid into the first hydraulic line, the hydraulic pump being operably connected to the hydraulic motor and configured to operate at least partially using the energy captured by the hydraulic motor; and
an electric motor operably connected to the hydraulic pump and configured to drive the hydraulic pump, wherein the electric motor is separate from a drive motor that drives the hydraulic machine.
2 . The hydraulic system of claim 1 , wherein the hydraulic pump is further mechanically connected to the hydraulic motor such that both the hydraulic motor and the electric motor drive the hydraulic pump.
3 . The hydraulic system of claim 1 , wherein the conditioning circuit further comprises an electric generator connected to the hydraulic motor and configured to generate electrical energy from the captured energy, the electric generator being operably connected to the electric motor and configured to supply the electrical energy to the electric motor to drive the hydraulic pump.
4 . The hydraulic system of claim 1 , wherein the conditioning circuit further comprises a reservoir connection line fluidly connected between the conditioning arrangement and the hydraulic pump.
5 . The hydraulic system of claim 1 , wherein the closed-loop hydraulic circuit further comprises a second hydraulic line connecting the hydraulic machine to the hydraulic consumer.
6 . A conditioning circuit for a closed-loop hydraulic system comprising:
a hydraulic motor configured to withdraw a portion of hydraulic fluid flowing in a hydraulic line of the closed-loop hydraulic system, the hydraulic motor configured to capture energy from the portion of hydraulic fluid;
a conditioning arrangement downstream of the hydraulic motor and configured to condition the portion of hydraulic fluid;
a hydraulic pump arranged downstream of the conditioning arrangement and configured to pump the portion of hydraulic fluid into the hydraulic line, the hydraulic pump being operably connected to the hydraulic motor and configured to operate at least partially using the energy captured by the hydraulic motor; and
an electric motor operably connected to the hydraulic pump and configured to drive the hydraulic pump, wherein the electric motor is separate from a drive motor that drives a hydraulic machine of the closed-loop hydraulic system.
7 . The conditioning circuit of claim 6 , wherein the hydraulic pump is further mechanically connected to the hydraulic motor such that both the hydraulic motor and the electric motor drive the hydraulic pump.
8 . The conditioning circuit of claim 6 , further comprising an electric generator connected to the hydraulic motor and configured to generate electrical energy from the captured energy, the electric generator being operably connected to the electric motor and configured to supply the electrical energy to the electric motor to drive the hydraulic pump.
9 . The conditioning circuit of claim 6 , further comprising a reservoir connection line fluidly connected between the conditioning arrangement and the hydraulic pump.