Fluid-working machine
AssigneeThe University of Edinburgh
InventorsStephen H. Salter, William H. S. Rampen
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Abstract
A multi-chamber fluid working machine has at least one electromagnetically controlled poppet valve linking each working chamber with respective high and low pressure fluid manifolds whereby displacement control is achieved by real time control of the electrically selectable poppet valves. Each valve seals via annular parts on the valve and its seat and is moved by reaction between a solenoid coil and a ferromagnetic part on the valve stem.
Claims9
A fluid-working machine having a plurality of working chambers of cyclically changing volume, a high-pressure fluid manifold and a low-pressure fluid manifold, a plurality of electromagnetically controlled valves at least one such valve linking each working chamber respectively to each manifold, and sequencing means for operating the valves in timed relationship with the changing volumes of the chambers, characterised in that each valve seals the respective chamber from the respective manifold by engagement of an annular valve part with an annular valve seat, in that a solenoid is provided to magnetically move the valve part relative to the seat by reacting with ferromagnetic material on the valve and in that at least one valve is a poppet valve having a stem and an enlarged head, the annular valve part being provided on the enlarged head and the ferromagnetic material being provided on the stem.
Dependencies are inferred from the claim text.