Patent ID: 9410558
Filing Date: 2016-08-09
CPC Classification: B60K,F02N,F15B,F16H,Y02T

Claim Text:
1. Hydraulic apparatus for recovering energy, said apparatus comprising: at least one hydraulic motor; a high-pressure fluid source; and a low-pressure fluid source suitable for supplying fluid at a “low” pressure, greater than atmospheric pressure; the apparatus being suitable: for being operated in an energy consumption mode, in which the fluid is transferred from the high-pressure fluid source to the low-pressure fluid source while driving said at least one motor in rotation; and for being operated in an energy accumulation mode, in which, by the action of said at least one motor operating as a pump, the fluid is transferred from the low-pressure fluid source to the high-pressure fluid source; wherein the apparatus further comprises a pressure reducer disposed on a first duct interconnecting the two fluid sources; the pressure reducer being arranged such that, in energy accumulation mode, if a filling indicator for indicating the level of filling of the low-pressure source is tending to become lower than a predetermined value, the reducer opens, enabling fluid to reach the low-pressure fluid source via the first duct.