| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060518000 | Having means to change operational phase relationship of working member and displacer | 6 |
| 20110030366 | STIRLING ENGINE - A Stirling engine that implements a Stirling cycle is described. The Stirling engine may have a power piston and a main displacer coupled to a camshaft by means of a 90°-dwell positive return cam and yoke system. The Stirling engine achieves gaseous working fluid displacement using the main displacer and the co-displacer. The co-displacer alternately locks between the main displacer and the power piston, which enables the main displacer to displace a different volume of gaseous working fluid during a cooling phase of the Stirling cycle than during a heating phase of the Stirling cycle. | 02-10-2011 |
| 20110041491 | HEAT ENGINE WITH EXTERNAL HOT SOURCE - A heat engine with external hot source in which the engine has at least one variable volume working chamber for a working gas, and a distribution mechanism that connects this chamber to a cold input from an energy receiving path during an outgoing transfer phase and to a hot output of the energy receiving path during an incoming transfer phase, the energy receiving path being intended to heat the working gas outside the chamber on contact with the external hot source, wherein the distribution mechanism is timed in such a way as to: maintain pressure in the energy receiving path; during stable operation, connect the working chamber with the cold input from the energy receiving path whilst the pressure in the chamber is lower than the pressure in the energy receiving path. | 02-24-2011 |
| 20120272643 | Solar Air Conditioning Heat Pump with Minimized Dead Volume - A method and apparatus that reduces the dead volume in a heat engine or heat pump, such as a duplex Stirling or Vuilleumier cycle device, by nesting the components of the displacer and regenerator such that nearly all working fluid is purged from the interstices of the regenerator elements and all other working fluid spaces that are not involved in doing useful work at each portion of the cycle. Particularly, a more scalable and efficient method and apparatus for providing solar air conditioning or refrigeration by means of a heated cylinder that alternately pressurizes and depressurizes a separate cooling cylinder by directly transferring thermally induced pressure changes to that cooling cylinder at optimized times in the cycle, under the control of a numerically controlled actuation system that can cycle at a much lower rate than mechanically coupled or harmonically phased systems. | 11-01-2012 |
| 20130047602 | CONTROL APPARATUS AND CONTROL METHOD FOR STIRLING ENGINE - An ECU is used for a Stirling engine that is provided with a starter that drives an output shaft of the Stirling engine. The ECU includes a control portion that commences an engine-starting drive of the starter within a phase interval, during which the torque of the Stirling engine that varies according to phase of the output shaft is relatively small. The phase interval is an interval during which the torque of the Stirling engine is less than or equal to the torque obtained when the compression begins. The phase at which the driving of the starter is commenced is set to the phase at which the torque of the Stirling engine becomes smaller than the torque obtained when the compression begins. | 02-28-2013 |
| 20130180238 | Beta Free Piston Stirling Engine In Free Casing Configuration Having Power Output Controlled By Controlling Casing Amplitude Of Reciprocation - The power output of a free piston Stirling engine mounted in a free casing configuration is controlled by having a spring drivingly linking the displacer to the casing and controllably varying the amplitude of reciprocation of the casing. A variable casing reciprocation restraint is linked to the casing for applying a variable restraining force to the casing. The restraining force is increased for decreasing the displacer amplitude of reciprocation and thereby decreasing the power output from the Stirling engine and the restraining force is decreased for increasing the displacer amplitude of reciprocation and thereby increasing the power output from the Stirling engine. | 07-18-2013 |
| 20130192221 | HEAT MACHINES - A heat machine having an external heat source and an external heat sink may be configured as a Stirling engine having a hot pair of cylinder-and-displacer combinations | 08-01-2013 |
