---
publication_id: "OT-2026-000000107"
title: "Energy recovery charging of an accumulator in a low-pressure compensation circuit of an electro-hydrostatic actuator"
published_at: "2026-09-15T19:02:29.828097Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000107"
categories:
  - "industrial-motion-power-transmission/fluid-power"
keywords:
  - "f15b1/024"
  - "e02f9/2217"
  - "e02f9/2289"
  - "f15b1/027"
  - "f15b1/033"
  - "f15b13/025"
---

# Energy recovery charging of an accumulator in a low-pressure compensation circuit of an electro-hydrostatic actuator

## Abstract

An electro-hydrostatic actuator having a main circuit, a charging circuit and four different operating quadrants uses return flow from the main circuit to the charging circuit to charge an accumulator of the charging circuit during an actuator-retracting pumping quadrant and an actuator-retracting motoring quadrant of the actuator's four different operating quadrants. A charged state of the accumulator is used to deliver compensatory flows to the main circuit during at least some instances of an actuator-extending pumping quadrant and an actuator-extending motoring quadrant of the four different operating quadrants.