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US 2018/0003091 A1Published application
A Piston Engine with a Transfer Valve Assembly
AssigneeLibertine FPE Ltd
InventorsSamuel Edward Cockerill, Peter David Grant, Edward Watson Haynes
Life of this patent
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Abstract
A piston expander and transfer valve for the controlled metering of a pressurised working fluid into an expansion chamber as part of an energy conversion device, and in particular as part of a heat to power conversion device employing a rankine thermodynamic cycle. The piston expander comprising a cylinder having an inlet manifold connected to an aperture in the cylinder's inlet aperture, a piston movable within the cylinder, and a transfer valve assembly movable under the action of changing gas pressure in the main chamber of the piston expander.
Claims23
A piston expander comprising:
- a cylinder having an inlet aperture;
- a piston that is free to reciprocate within the cylinder and
- a transfer valve assembly disposed within the cylinder and dividing the volume within the cylinder into a main chamber and a bounce chamber, the transfer valve assembly comprising:
- a transfer valve body, defining a transfer chamber;
- a transfer valve;
- wherein the transfer valve assembly is movable within the cylinder to provide at least one open position and at least one closed position, such that the transfer chamber is in fluid communication with the cylinder inlet aperture in the open position and is not in fluid communication with the cylinder inlet aperture in the closed position;
- wherein the transfer valve is movable within the transfer valve assembly to provide at least one open position and at least one closed position, such that the transfer chamber is in fluid communication with the main chamber in the open position and is not in fluid communication with the main chamber in the closed position.
4 more elements
Dependencies are inferred from the claim text.