Cogen Microsystems Pty Ltd.
Cogen Microsystems Pty Ltd. Patent applications | ||
Patent application number | Title | Published |
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20160047243 | EXPANDER FOR A HEAT ENGINE - An expander for a heat engine, the expander being capable of converting a high pressure gaseous working fluid to useful work, the expander including: •high pressure working fluid supply means; •at least one reciprocating piston reciprocating in a cylinder between top-dead-centre (TDC) and bottom-dead-centre (BDC) with a long dwell time at TDC; •a working fluid inlet valve that opens and closes to introduce, while open, high pressure working fluid from the working fluid supply means into an expansion chamber in the cylinder at or near TDC; •power transfer means that transfers work done on a piston by the working fluid to a form of useful work output; and •an exhaust valve to release expanded working fluid from the expansion chamber to a volume of low pressure working fluid; wherein piston travel is small during transition of the inlet valve from open to closed and from closed to open. | 02-18-2016 |
20100300097 | HEAT ENGINE - A heat engine includes a boiler, an injector for injecting working fluid into the boiler, a retainer for releasing the hydraulic fluid for movement away from a start position once working fluid vapour pressure in the boiler reaches a predetermined level, a returner for returning the hydraulic fluid to its start position following expansion of working fluid vapour in the boiler, resulting in reciprocating hydraulic fluid motion, and an exhaust valve to release expanded working fluid vapour from the boiler. The vapour pressure increase in the boiler causes a change of state from liquid to gas of a least a portion of the injected working fluid, followed by a substantially constant pressure heating of the working fluid, giving rise to a change of state from liquid to gas of substantially all of the remaining injected working fluid. | 12-02-2010 |