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7617680 Power generation using low-temperature liquids  
Methods and systems are disclosed for generating power though the use of thermodynamic engines and low-temperature liquids. A liquid cryogen maintains a temperature differential with a heat source...
7607299 Thermal cycle engine with augmented thermal energy input area  
A method and apparatus for producing electrical energy from a thermal dynamic cycle. The apparatus can include a heat exchange apparatus portion that allows for a large surface area for thermal...
7603858 Harmonic engine  
A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine...
7603857 Exhaust heat recovery apparatus  
An exhaust heat recovery apparatus includes a first piston; a second piston; a first cylinder in which the first piston reciprocates; a second cylinder in which the second piston reciprocates; and...
7587896 Cooled infrared sensor assembly with compact configuration  
An integrated sensor assembly ( 10 ) includes a gas compression unit ( 104 ) having a first longitudinal axis ( 308 ) and a gas expansion unit ( 112 ) having a second longitudinal axis ( 366 ) and...
7584612 Linear free piston Stirling machine  
A linear free piston Stirling machine having an overstroke prevention mechanism for the power piston. A resilient member is fixed to the casing which contacts the power piston 4 when its...
7490469 Dual-function stirling engine system  
A dual-function system comprising a heat source and a Stirling engine movably secured to a motorized machine, where the Stirling engine is positionable to operate in a refrigeration mode and in a...
7490468 Operation of an engine  
This invention relates to a method of operating an engine and, particularly to a method of determining the pressure of a working gas within a Stirling engine of a domestic combined heat and power...
7484366 Multistage stirling engine  
A multistage Stirling engine 1 mounted on an automobile provided with an internal combustion engine has two cylinders 4 and 5 . Displacer pistons 6 and 7 and power pistons 8 and 9 are...
7464550 Vehicle with combustion engine and auxiliary power unit  
Motor vehicle comprises a combustion engine with internal combustion of fuel and/or cold-flame product for driving the motor vehicle and thereby producing exhaust gas and an auxiliary power unit...
7458216 Exhaust heat recovery apparatus  
An exhaust heat recovery apparatus (functioning as a Stirling engine), which is installed in, for example, an exhaust passage of an internal combustion engine and an exhaust passage of factory...
7458213 Heating arrangement  
A heating arrangement for heating a fluid, the arrangement comprising an elongate housing having a main axis. An inner chamber ( 21 ) for a first fluid surrounds the axis. A plurality of axially...
7395666 Thermal hydro-machine on hot gas with recirculation  
A thermal hydro-machine on hot gas with recirculation (FIGS. 3, 4 and 5 ) belongs to the group of multi-cylinder piston rotational machines for converting the heat into the mechanical work. The...
7377107 Cogeneration system  
A Stirling engine-equipped cogeneration system is capable of utilizing thermal energy, without waste, and of offering high thermal usage efficiency at every stage of the thermal energy utilization...
7363760 Thermodynamic free walking beam engine  
A free walking beam that uses the principles of the Stirling cycle to drive a piston reciprocatatively through a housing cylinder to pivot alternately around a pair of parallel power output shafts...
7340879 Locally powered water distillation system  
A system for distributed utilities including electrical power and water. A generation device is provided for converting an available resource to a desired utility; the resource may be water, in...
7329959 Micro power generator and apparatus for producing reciprocating movement  
There is provided a micro power generator enhanced in efficiency and power generation output, and having an increased temperature range for operation. The micro power generator comprises: a...
7320218 Method and system for generation of power using stirling engine principles  
A heat engine enclosing a chamber in housing has two zones maintained at different temperatures. The first zone receives heat energy from an external power source. The second zone is connected to...
7281383 Reciprocating four-stroke Brayton refrigerator or heat engine  
A thermal machine that can function as either a refrigerator or an external combustion heat engine is disclosed. A working gas undergoes four thermodynamic processes that comprise a Brayton cycle....
7258086 Four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston engine with a variable piston stroke  
A four-cycle, four-cylinder, premixed charge compression ignition internal combustion reciprocating free piston engine with a variable piston stroke and a compression ratio that varies as needed to...
7257949 Stirling engine  
Through stroke control whereby the stroke of a piston is detected and controlled to be equal to a target stroke, the piston is prevented from colliding with a displacer, and the refrigerating...
7194858 Hydrogen equalization system for double-acting stirling engine  
A working gas pressure equalization system for a multiple-cylinder, double-acting hot gas engine such as a Stirling engine of the type having a plurality of pistons reciprocatable within the...
7191596 Stirling engine and hybrid system that uses the Stirling engine  
A Stirling engine includes at least a first cylinder and a second cylinder arranged in serial, and a heat exchanger. The heat exchanger includes a radiator, a regenerator, and a heater. At least a...
7185492 Stirling engine having slidable piston  
The present invention is a rotary engine having a rotor and a slidable piston that are contained within a stator.
7181912 Power device equipped with combustion engine and stirling engine  
A power unit for a vehicle, such as an automobile, includes an internal combustion engine 1 as a prime mover for the vehicle, a generator 3, and a Stirling engine 4 for driving the generator ...
7171811 Multiple-cylinder, free-piston, alpha configured stirling engines and heat pumps with stepped pistons  
An improved, free-piston, Stirling machine having at least three pistons series connected in an alpha Stirling configuration. Each cylinder is stepped so that it has a relatively larger diameter...
7171810 Stirling engine with hydraulic output  
A heat engine has a region within which a working fluid travels and an hydraulic fluid provided in a reservoir and the output from the heat engine drives the movement of the hydraulic fluid.
7168248 Stirling engine  
A Stirling engine, wherein when a linear motor reciprocatingly move a piston in a cylinder, a displacer also reciprocatingly moves in the cylinder storing the displacer. By this, working mixture...
7152404 Power unit with reciprocating linear movement based on stirling motor, and method used in said power plant  
The invention concerns a reciprocating linear movement power unit. The powering element consists of a Stirling heat engine and the generator consists of a piston ( 1 ) and displacers ( 2,3 ) of the...
7134279 Double acting thermodynamically resonant free-piston multicylinder stirling system and method  
Present implementations provide an approach that allows for a double-acting, multi-cylinder, thermodynamically resonant, alpha configuration free-piston Stirling system. The system includes...
7089735 Channelized stratified regenerator system and method  
A channelized stratified regenerator with integrated heat exchangers are disclosed using micromachining to precisely construct structural geometries, such as fins and axial stratification of...
7080509 System for obtaining rotational energy from ambient forces  
The intended purpose of my invention is to create a point of origin in system from which driving thrusts could evolve. In this system, vacuum can be developed with less force than it naturally is...
7076941 Externally heated engine  
An externally heated engine is provided which has at least two pistons. The first piston has a first side (working side) and a second side opposite the first side. The first side of the first...
7067933 Waste oil electrical generation system  
An improved electrical generation system utilizing environmentally hazardous waste oils as a combustible fuel. More particularly, a system to generate electrical power using a Stirling-cycle engine...
7065969 Power cycle and system for utilizing moderate and low temperature heat sources  
A new thermodynamic cycle is disclosed for converting energy from a low temperature stream, external source into useable energy using a working fluid comprising of a mixture of a low boiling...
7055321 Suspension mechanism for stirling cycle engine  
A suspension mechanism capable of absorbing vibrations in all directions of a Stirling cycle engine 10 . The suspension mechanism comprises the Stirling cycle engine 10 including nut members 30...
7043909 Beta type stirling cycle device  
A coaxial Beta type Stirling cycle device, having a power piston and a displacer coaxially positioned in series within an enclosing cylinder. The power piston and power piston shaft have an opening...
7028473 Hot-gas engine  
The hot-gas engine comprises a cylinder, a working piston which together with a cylinder cover delimits a cylinder space designed to accommodate a working medium, a displacement piston which...
7021054 Stirling engine assembly  
A Stirling engine assembly comprising a Stirling engine ( 1 ) with a hot head ( 3 ) and a cold region ( 4 ). An annular burner ( 9 ) surrounds the head and is arranged to provide heat to the head....
7017344 Machine spring displacer for Stirling cycle machines  
A displacer spring and displacer/spring assembly for use in an FPSE and with improved wear characteristics. One embodiment calls for the use of a single machined spring operating alternately in a...
7013640 Stirling engine assembly  
A seal between the head of a Stirling engine ( 1 ) and surrounding burner assembly ( 2 ). The seal comprises an annular trough ( 11 ) attached to one component and filled with a viscous liquid ( 14...
7013639 Heat differential power system  
Heat differential power systems and apparatus for powering liquid cooling systems and/or generating electrical power in a data processing system or a telecommunication system are presented. A...
7007469 Dual shell Stirling engine with gas backup  
A Stirling engine which utilizes an inner and outer dual shell pressure containment system surrounding the high pressure and temperature engine components. The space between the shells is filled...
6996983 Stirling engine  
A rotary Stirling-type engine ( 100 ) having a heat chamber ( 105 ) with a compressing turbine ( 107 ) at one end and a valve assembly ( 108 ) through which gas enters the heat chamber ( 105 ). At...
6990810 Threaded sealing flange for use in an external combustion engine and method of sealing a pressure vessel  
A pressure vessel for containing a mechanical device operable to convert heat to mechanical or electrical power, comprising: a high temperature section, the high temperature section having a first...
6971235 Evaporative burner  
An evaporative burner that includes an igniter assembly, a swirler, an evaporation chamber, and a reverse throat. The reverse throat has raised ends that protrude into the evaporation chamber. The...
6966182 Stirling engine thermal system improvements  
A thermal cycle engine having a heat exchanger for transferring thermal energy across the heater head from a heated external fluid to the working fluid. The heat exchanger has a set of heat...
6959546 Method and apparatus for energy generation utilizing temperature fluctuation-induced fluid pressure differentials  
A method and apparatus for producing energy is provided for generating renewable energy. Captive compressed fluid cycles between two coupled containers through a motive power source. The captive...
6952921 Heater head assembly system and method  
A heater head assembly is provided with potential advantages of low assembly and integration requirements. A significant portion of the heater head assembly is formed or machined as a single piece...
6945044 Dual cycle hot gas engine comprising two movable parts  
The invention relates to a dual cycle hot gas engine comprising pistons which are movable inside one another, a dual external piston being arranged for axial movement inside a basic cylinder...
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