Dual architecture for an electro-hydraulic drive system
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United States of America Patent
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Oct 17, 2023
Grant Date -
Sep 8, 2022
app pub date -
Jun 9, 2020
filing date -
Oct 1, 2019
priority date (Note) -
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Abstract
An example hydraulic system includes a hydraulic actuator; a pump driven by an electric motor and having an inlet port and an outlet port; a boost flow line configured to provide boost fluid flow or receive excess fluid flow; a reservoir fluid line fluidly coupled to a reservoir; and a valve assembly configured to operate in a plurality of states to allow the pump to operate in a closed-circuit configuration in which fluid discharged from the hydraulic actuator is provided to the inlet port of the pump or an open-circuit configuration in which fluid discharged from the hydraulic actuator is provided to the reservoir.
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