Hydraulic machinery
AssigneeVolvo Construction Equipment AB
InventorsTaerang JUNG, Sangmin GWON, Sangki BAE, Dongsoo KIM
Life of this patent
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Abstract
A hydraulic machinery may include: a boom actuator including a large chamber and a small chamber; a tank; and an energy recovery circuit provided between the boom actuator and the tank, wherein the energy recovery circuit includes: a discharge valve provided between the large chamber and the tank to allow or block the flow of fluid from the former to the latter; a regeneration valve connecting the large chamber and the small chamber to allow or block the flow of fluid from the former to the latter; a recovery part for recovering energy; and a first valve provided between the large chamber and the recovery part to allow or block the flow of fluid from the former to the latter.
Claims14
A hydraulic machine comprising:
- a boom actuator comprising a large chamber and a small chamber;
- a tank;
- an energy recovery circuit provided between the boom actuator and the tank, the energy recovery circuit comprising:
- a drain valve provided between the large chamber and the tank to allow or block a flow of fluid from the large chamber to the tank;
- a regeneration valve connecting the large chamber and the small chamber to allow or block a flow of fluid from the large chamber to the small chamber;
- a recovery unit recovering energy;
- and
- a first valve provided between the large chamber and the recovery unit to allow or block a flow of fluid from the large chamber toward the recovery unit.
Dependencies are inferred from the claim text.