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| Number | Title | Issue Date |
| 8127544 | Two-stroke HCCI compound free-piston/gas-turbine engine This invention provides a compact, fuel-efficient internal combustion engine that can be used to provide rotating shaft output power to a wide variety of mobile and stationary applications. It is based on a two-stroke free-piston gas generator that implements the ho... | 03/06/2012 |
| 7316116 | Flywheel combustion engine A free piston drive combustion engine is provided wherein the piston are reciprocated by the force of combustion in combination with its compressed exhaust gases. A compressed air fuel mixture is ignited in the combustion chamber exploding driving a piston backward,... | 01/08/2008 |
| 7269500 | Process for determining the operating parameters of an injection device A process for determining the operating parameters of an injection device of a combustion engine includes the steps of: (a) selecting an injector to test; (b) calculating a mean velocity associated with a preceding injector arranged before the injector to test; c) a... | 09/11/2007 |
| 7194989 | Energy efficient clean burning two-stroke internal combustion engine A precision cast engine has a piston unit and a rotor unit to translate linear thrust from the piston unit into rotary power. Each piston rod is attached to a thrust absorber carriage running on precision bearings to eliminate piston drag on the cylinder walls. One ... | 03/27/2007 |
| 7178616 | Power generation system and method An extended rich mode engine configured and operated extremely rich of stoichiometric to produce a substantially continuous hydrogen rich engine exhaust. Oxygen enrichment devices further optimize production of hydrogen rich engine exhaust. Engines include a free pi... | 02/20/2007 |
| 7142974 | Engine measuring equipment Engine measuring equipment for obtaining engine torque regarded as necessary for engine performance assessments for a short time period during a period when engine revolution is under a transient state is disclosed. The engine measuring equipment includes a central ... | 11/28/2006 |
| 7141888 | Antirotational structures for wave energy converters A WEC includes a non-circular main central column positioned within a like non-circular central opening of a shell to contain the central column and prevent rotation or twisting of the shell relative to the column. In a particular embodiment, the central column is m... | 11/28/2006 |
| 7116004 | Method for regulating the operation of a device for generating electric energy by means of a generator driven by a free-piston internal combustion engine The present invention relates to a method for controlling an electrical generator comprising a two-stroke free piston internal combustion engine having a first cylinder and a second cylinder aligned on a common axis, a first piston pair comprising a first piston and... | 10/03/2006 |
| 7100546 | Crankshaftless internal combustion engine The engine of the present invention provides the direct transfer of energy from the burning down of fuel in the engine cylinders into shaft power by forcing working liquid through guide devices and against an impulse turbine, thereby eliminating the need for supplem... | 09/05/2006 |
| 7052249 | Air/oil separating tank—thermostatic valve—minimum pressure valve—oil cooling radiator—compressed air cooling radiator group A group is provided for a compressed air distribution unit of the type including an intake regulator, an oil bath-screw type compressor, an air/oil separating tank, a minimum pressure valve, an air cooling radiator, a pressurized air collection tank, a thermostatic ... | 05/30/2006 |
| 7011051 | Hybrid two cycle engine, compressor and pump, and method of operation The hybrid comprises a two-cycle engine, boosted by the engine power compressor and a hydraulic pump. The pump plunger fastened to engine piston and located coaxially with the compressor piston and pump rotor, provide direct energy transmission to the compressor and... | 03/14/2006 |
| 6971339 | Electromagnetic servo valve strategy for controlling a free piston engine A method for controlling a servo for an actuator that applies a force to a piston that reciprocates in a cylinder of a free piston engine having axially-aligned cylinders and a pair of mutually connected pistons that reciprocate in the cylinders. The servo has a fir... | 12/06/2005 |
| 6959545 | Engine control based on flow rate and pressure for hydraulic hybrid vehicle A system for a hydraulically driven vehicle includes an engine having multiple, selectively operating cylinder-pump banks producing fluid flow at an outlet, a pump/motor having a variable flow rate including an inlet for driving the wheels, a hydraulic line having a... | 11/01/2005 |
| 6948459 | Position sensing for a free piston engine A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, wit... | 09/27/2005 |
| 6941903 | System and method for adding air to an explosion chamber in an engine cylinder An engine includes a piston located in a cylinder, an inlet through which at least a portion of fuel for an ignition and combustion is passed into the cylinder, an outlet through which exhaust from the combustion is removed from the cylinder, and an air injector tha... | 09/13/2005 |
| 6935114 | System and method for starting an engine A system and method for starting an engine having a crankshaft is provided. Pressurized fluid is stored in an accumulator. A flow of pressurized fluid is released from the accumulator. The flow of pressurized fluid released from the accumulator is directed to a pump... | 08/30/2005 |
| 6931852 | Steam engine A steam engine increases efficiency and prevents corrosion, abrasion, and the like in a part receiving steam pressure. A heater and a cooler are provided on one side of a U-shaped fluid container, and a piston for output is provided on its other side. The heater hea... | 08/23/2005 |
| 6804612 | Methods and systems for performing integrated analyzes, such as integrated analyzes for gas turbine power plants Automated systems for performing integrated analyses. In one embodiment, an integrated analysis system can be used to comprehensively evaluate the effects of changes in hardware configuration or operating conditions on gas turbine power plant performance and economi... | 10/12/2004 |
| 6692712 | Exhaust gas catalyst comprising rhodium, zirconia and rare earth oxide A catalyst comprising rhodium on a support, the support comprising 52-95% zirconia and 5-48% rare earth oxide, based on the total weight of (a) and (b), the concentration of the rhodium on the support being 0.035-0.35% based on the total weight of the rho... | 02/17/2004 |
| 6216444 | Combustion engine This invention pertains to a combustion engine having a combustion chamber (1, 201), which has an ignition device, for the combustion of a fuel with formation of a combustion gas during an explosion stroke, and also having a rigid wall that is displaceabl... | 04/17/2001 |
| 6213097 | Engine working according to the method of pulsating combustion A combustion engine based on the principle of pulsating combustion and a method of operating the engine includes a pressure-resistant housing in which a combustion chamber is provided, an intake mechanism for fuel and combustion air, and an exhaust mechan... | 04/10/2001 |
| 6206656 | Method of operating a free piston internal combustion engine with high pressure hydraulic fluid upon misfire or initial start-up A method of operating a free piston engine of the present invention, includes a housing with a combustion cylinder and a second cylinder. A piston includes a piston head reciprocally disposed within the combustion cylinder, a second head reciprocally disp... | 03/27/2001 |
| 6035637 | Free-piston internal combustion engine This invention is an efficient free-piston internal-combustion engine having an expansion ratio greater than the compression ratio and preferably with gas bearings supporting the piston. The use of gas bearings in combination with high-temperature ceramic... | 03/14/2000 |
| 5983638 | Hydraulic switching valve, and a free piston engine provided therewith An hydraulic switching valve (35) comprises, among other parts, a valve housing (45, 62) with a first connection (33, 36) and a second connection (34, 67) and a valve body (37, 63) which is movable in the valve housing (45). The switching valve (35) is op... | 11/16/1999 |
| 5913290 | Power plant A power unit with a diesel free piston device which is fed with air from a compressor device (96), and whose exhaust gas runs a turbine (150). The device has a cylinder (12) with two pistons (24, 26) which are movable in anti-phase and which between them ... | 06/22/1999 |
| 5894730 | Internal combustion hydraulic motor and method of operation An internal combustion hydraulic engine for use in motor vehicles and the like comprises at least one piston having a first piston head and a second piston head; a first or combustion cylinder at least partially surrounding the first piston head for recei... | 04/20/1999 |
| 5832731 | Expandable piston rotary machine An expandable piston rotary engine includes a core having a substantially circular periphery and central axis, and a rotor/flywheel mounted concentrically for rotation relative to the core. The core defines a plurality of cylinders spaced symmetrically ab... | 11/10/1998 |
| 5771693 | Gas compressor A gas compressor is provided comprising a chamber (9) to contain gas to be compressed, a piston (12) and the chamber (9) and an apparatus to drive the piston into the chamber (9) to compress the gas. The compressor also comprises another apparatus (5) to ... | 06/30/1998 |
| 5647734 | Hydraulic combustion accumulator A hydraulic combustion accumulator includes a cylinder divided into a combustion chamber and a hydraulic fluid chamber by a free reciprocating piston. An injection mechanism is provided for separately injecting a combustion fuel and air into the combustio... | 07/15/1997 |
| 5551233 | Thermal cycle for operation of a combustion engine A cycle for an external combustion engine having two external variable volume combustion chambers, each with a floating piston. A compressor provides pressurized gas selectively to a first or second end of the combustion chambers. The introduction of the ... | 09/03/1996 |
| 5426940 | Free piston external combustion engine An internal combustion engine having at least two external variable volume combustion chambers, each with a floating piston. A compressor provides pressurized gas selectively to a first or second end of the combustion chambers. The introduction of the pre... | 06/27/1995 |
| 5363651 | Free piston internal combustion engine An improved internal combustion engine is disclosed having no rotating crank shaft. Each piston rod of the engine is connected to a hydraulic piston and cylinder the output of which drives the rotating output shaft of a hydraulic motor. A take off from th... | 11/15/1994 |
| 5036667 | Fluid power engine A fluid power engine is disclosed. A pair of axially aligned and opposed combustion pistons oscillate in a pair of opposed cylinders. The pistons are connected to each other by a common axial shaft. A fluid power piston is adapted to the shaft and oscilla... | 08/06/1991 |
| 4966000 | Internal combustion engine with fluid drive output An internal combustion engine is provided wherein paired free pistons are driven within opposed piston chambers of a cylinder to drive a fluid which, in turn, is introduced to the fluid drive chambers of a vane-type rotor assembly. The rotor assembly incl... | 10/30/1990 |
| 4873822 | Energy producing installation with internal combustion engine and turbine The installation comprises a compression unit and a power unit. The compression unit comprises at least one engine operation according to a Diesel cycle and supercharged by a turbine having an expansion turbine supplied with the exhaust gases of the engin... | 10/17/1989 |
| 4815294 | Gas turbine with external free-piston combustor AN external-combustion gas turbine in which the fuel combustion takes place in a free-piston combustor. The gas turbine is the motor component of this type of engine and provides external power by means of its shaft. The gas turbine comprises an air compr... | 03/28/1989 |
| 4803960 | Internal combustion engine, particularly, a free-piston engine An internal combustion engine comprises a cylinder and a piston axially movable within the cylinder and formed with cylindrical projections extending axially outwardly from the piston and being of a smaller diameter than that of the piston. The piston and... | 02/14/1989 |
| 4791786 | Free-piston motor with hydraulic or pneumatic energy transmission A free-piston motor with hydraulic or pneumatic energy transmission comprising at least one free-piston unit designed for intermittent operation using always the same optimal cycle comprising a compression and an expansion stroke and consisting of a cylin... | 12/20/1988 |
| 4777801 | Energy conversion apparatus A two-stage energy conversion apparatus operating on a nonpolluting fuel. A single-cylinder reciprocating engine converts combustion energy to mechanical energy. Mechanical energy developed in the reciprocating engine is transmitted or coupled to a turbin... | 10/18/1988 |
| 4776166 | Free piston power unit with relieved face bounce cylinders An improved free piston power unit includes a pair of power pistons at opposite ends of a common power cylinder, wherein the power pistons are linked for reciprocation in unison in opposite directions. The power pistons carry a respective pair of compress... | 10/11/1988 |
