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AssigneeArtemis Intelligent Power Limited
InventorsWilliam Hugh Salvin Rampen, Niall James Caldwell, Michael Richard Fielding, Stephen Michael Laird, Uwe Bernhard Pascal Stein, John Tearlach Campbell
Estimating the term…
In a method of detecting a fault in a fluid-working machine including a plurality of working chambers of cyclically varying volume, each working chamber is operable to displace a volume of working fluid which is selectable for each cycle of working chamber volume to carry out a working function responsive to a received demand signal. An output parameter of the fluid working machine, which is responsive to the displacement of working fluid by one or more of the working chambers to carry out the working function, is measured. It is determined whether the measured output parameter fulfils at least one acceptable function criterion, taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.
A method of detecting a fault in a fluid-working machine comprising a plurality of working chambers of cyclically varying volume, each said working chamber operable to displace a volume of working fluid which is selectable for each cycle of working chamber volume to carry out a working function responsive to a received demand signal, the method comprising determining whether a measured output parameter of the fluid working machine which is responsive to the displacement of working fluid by one or more of the working chambers to carry out the working function fulfils at least one acceptable function criterion, the method characterised by taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.
A fluid-working machine comprising a controller and a plurality of working chambers of cyclically varying volume, each said working chamber operable to displace a volume of working fluid which is selectable by the controller on each cycle of working chamber volume, the controller operable to select the volume of working fluid displaced by one or more said working chambers on each cycle of working chamber volume to carry out a working function responsive to a received demand signal, characterised by a fault detection module operable to determine whether a measured output parameter of the fluid working machine which is responsive to the displacement of working fluid by one or more working chambers to carry out the working function fulfils at least one acceptable function criterion by taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.
Dependencies are inferred from the claim text.