HYDRAULIC APPARATUS, AND METHOD, FOR THE RECOVERY OF ENERGY IN A OPERATING MACHINE
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United States of America Patent
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Issued Date -
Feb 2, 2023
app pub date -
Oct 28, 2020
filing date -
Oct 28, 2020
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Abstract
An hydraulic apparatus (100) for energy recovery in an operating machine comprising an hydro-pneumatic accumulator (14) able to accumulate, during the operation of lowering of an operative load (111) by an operating machine (1), a volume of oil with a fixed amount of an inert fluid, and the pre-charge pressure (Po) of which, before the beginning of the accumulation, is adjusted according to the variations of pressure of the oil inside the hydraulic cylinders (12,13) which act on the operative load (111), in such a way to accumulate the maximum hydraulic energy made available by the lowering of operating load (111), that is to maximize the average pressure of hydro-pneumatic accumulator (14) during the phase of accumulation of energy.
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