公开(公告)号：EP3486482A1

公开(公告)日：2019-05-22

申请号：EP17202461.4

申请日：2017-11-17

申请人： Artemis Intelligent Power Limited

发明人： BRETT, Mark ,  MCCURRY, Peter

IPC分类号： F04B7/00 ,  F04B49/06 ,  F04B53/10

摘要： A measurement of the pressure of hydraulic fluid in a fluid working machine can be determined from the timing of the movement of valves which selectively seal a working chamber of cyclically varying volume from a fluid gallery. The timing of opening of a low pressure valve, to connect a working chamber to a low pressure fluid gallery, following the closure of a high pressure valve to seal a working chamber can be used to estimate the pressure in the high pressure fluid gallery at the moment of closure of the high pressure valve.