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WO/1996/000342A1 |
A piston end position limiter for a free piston machine of the type having a piston (14) sealingly reciprocating in a cylinder (12) and separating a work space (16) bounded at one end of the piston from a second space (20) bounded at the...
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WO/1995/033921A1 |
In an autogenous generator (1) in which electrical energy is generated by a linkage between fixed windings (2) and permanent magnets which move integrally on the alternating motion of one or more pistons of a two-stroke internal combusti...
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WO/1995/033125A1 |
A gas driven oscillator (10) comprising an engine (11) having a cylinder (12) and a pair of expansion chambers (13, 14) on either side of a floating piston (15) adapted to reciprocate within the cylinder (12). The piston (15) is mounted ...
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WO/1995/026070A1 |
An improved mechanical transducer of the type having a body (14) reciprocating in a chamber (3), the body being linked to a housing by a linkage (15) including an axially compliant spring. An anti-friction fluid bearing applies a lateral...
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WO/1995/018305A1 |
The invention relates to a multi-piston hydraulic pump for a free-piston engine, comprising two engine pistons (2) mounted on a common piston rod (1) which is also fitted with pin-shaped pistons (5a, 5b) of the hydraulic pump at a radial...
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WO/1994/021891A1 |
A hydraulic system (20) including hydraulic units (22, 24, 26, 28) serving as wheel motors and pumps is disclosed. The hydraulic units (22, 24, 26, 28) include stationary members (52, 53) supporting cylinders with piston assemblies (60, ...
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WO/1994/018443A1 |
The invention relates to a method and apparatus for controlling the injection of fuel into the combustion chamber of an internal combustion engine. Measuring of the combustion pressure of a cylinder is effected by using a piezoelectric w...
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WO/1994/018449A1 |
The invention relates to a method and apparatus for controlling the injection of diesel fuel. The opening of a needle (2) included in an injection nozzle (1) is subjected to a mechanical action by a piezoelectric actuator (6). Thus, the ...
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WO/1994/017295A1 |
The invention relates to a method for absorbing the vibration of a free-piston engine and to a vibration-absorbed free-piston engine. At least two separate piston units (11, 12) are synchronized to operate in a counter action such that a...
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WO/1994/001665A1 |
A rotating-liquid piston engine (200) having two or more cylinders (201, 202) that are partially filled with a fixed volume of liquid and are interconnected by two tangentially-connected, unidirectional flow tubes (203, 204) or pipes con...
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WO/1993/011352A1 |
The invention relates to power installations for quick production of electric energy in case of switching off of the main electric power supply system or in case of a voltage drop below the needed level. The aim of the invention consists...
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WO/1993/010345A1 |
A free-piston engine having a fluid pressure unit, comprises a cylinder (1) and a piston (2) arranged herein. The piston (2) has been equipped with a plunger-shaped extension (8) including a working section having a room bordered by a fi...
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WO/1993/010344A1 |
A free-piston engine having a fluid pressure unit comprises a cylinder (1) and a piston (2) arranged within the cylinder (1) and reciprocating therein between the bottom dead centre and the top dead centre. The piston (2) includes a plun...
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WO/1993/010342A1 |
A free-piston engine having a fluid energy unit comprises a cylinder (1) and a piston (2) reciprocating within the cylinder (1). The piston (2) is equipped with a plunger-shaped extension (10) including a first axial face (50) moving wit...
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WO/1993/010341A1 |
The invention relates to a method for the cold start of a free-piston diesel engine, comprising a cylinder (1) having a combustion room (2) therein and an air inlet (6), fuel supply (8) and combustion gas outlet (7) connected thereto, an...
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WO/1993/010343A1 |
In a method of operating a free-piston engine according to the diesel principle a combustion room in a cylinder is reduced by displacing a piston thereby compressing air supplied to the cylinder, fuel being injected into the combustion r...
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WO/1993/008041A1 |
The rear view apparatus according to the invention is of the periscopic type and consists of at least three separate mirrors, of which the first mirror (1) is placed higher than the cabin roof (4), while the design and positioning of the...
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WO/1993/007360A1 |
The thermal efficiency of prior art thermal power installations does not exceed 50 %. The oscillating piston motor of the invention and the installation comprising it makes it possible to improve this efficiency. The oscillating piston m...
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WO/1993/006349A1 |
A control system for a variable stroke free piston engine (110), sets the ignition timing as a function of measured piston velocity. This velocity proportional ignition (524) system provides spark advance on a stroke by stroke basis as a...
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WO/1993/001393A1 |
A free piston mechanism comprising a compression tube (1) having a driving end and a compression end, a free piston (11) drivable within the compression tube (1) towards the compression end and adapted to compress a driver gas at the com...
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WO/1992/014915A1 |
The invention relates to an internal explosion engine comprising a stationary element (1), at least two moving members (2 and 2') displaceably embedded in the stationary element (1), at least one driving piston (3 and 3') formed by at le...
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WO/1992/002730A1 |
A free-piston engine has one or more pistons (1) which are preferably rigidly connected to hydraulic pistons (2) and which move freely in cylinders along the longitudinal axis. The rear face of the piston (1) is used to convey the combus...
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WO/1991/014087A1 |
This gas pressure generating engine has a totally unconnected piston (33) running between a combustion chamber (49) and a rebounding volume (37). The piston (33) uncovers an outlet port (22) after moving a short distance from the combust...
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WO/1991/011596A1 |
A compact free piston engine of the unsymmetrical type including a structure with a cylinder (11) detachably supported therein, said cylinder having a pair of pistons (12 and 13) with a combustion chamber (14) therebetween and each pisto...
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WO/1991/011592A1 |
The invention disclosed in the description, the claims and Figures 15 - 5/5 is a piston power machine (23) which can be used in a wide range of applications. Furthermore, in stationary use, for example as a press or mould support, the re...
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WO/1990/015231A1 |
In a starter motor for an axial-piston engine with a stepped piston (14), two variable-length belt elements (98, 100) pass around an exentric element (92, 94, 96). The belt elements are connected directly or indirectly to interspaced poi...
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WO/1990/001613A1 |
A fluid operated apparatus having a cylinder assembly, a piston (13) and a rod (12) is illustrated wherein cap members (18) are provided with a first circumferential groove (A) and a reduced end portion (B) while a second circumferential...
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WO/1989/012749A1 |
The present invention relates to a resonant piston compressor (10) in which a double-sided piston (18) reciprocates within a cylinder (24) and defines a valved compression space (26) on one side of the piston and a balance chamber on its...
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WO/1989/009324A1 |
A reciprocating piston internal combustion engine (1) with means for controlling the output, comprises at least one working cylinder the head of which is connected to at least one electronically controlled intake valve (3) for air or mix...
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WO/1989/003475A1 |
A free-piston engine in which combustion gas is conducted around a piston (11) via inertial channel (19) for a short time during the expansion stroke. The resulting lowered pressure enables intaking in the final part of this stroke. Pres...
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WO/1989/000245A1 |
This invention is a multi-stage compressor (1, 5) embodying a stepped piston (5) in a stepped cylinder (1) and connected through a coaxial rod (4) to the piston (3) of an engine. Control means (10) in a passageway or a conduit extending ...
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WO/1988/000279A1 |
The installation comprises a compression unit and a power unit. The compression unit (8) comprises at least one diesel engine (160) supercharged by a turbo-fan consisting of an expansion turbine (152) supplied with the exhaust gases of t...
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WO/1986/006444A1 |
The disclosed engine comprises at least one cylinder inside which is moveably arranged a piston which may effect axial stroke motions within the cylinder and which is provided with cylindrical extensions which extend on both sides in the...
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WO/1985/003979A1 |
Hydraulic pump wherein the hyraulic liquid to be discharged is displaced by means of the piston (14) of a free-piston motor (10). The liquid flows by means of plunger pistons, (56, 58, 60, 62) arranged in the wall (48) delimiting sideway...
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WO/1985/001084A1 |
An externally excited resonant free piston Stirling engine thermal amplifier system which is over damped at all load levels and will not freely oscillate and wherein the displacer/piston system of the Stirling engine is externally driven...
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WO/1984/000571A1 |
A diesel hammer (20) is adapted to produce uplift blows by connecting its casing (30) via a pulling connection (52) to a case (24) to be pulled, removing vent plugs (76) from the top of the casing, sealing all other openings (78), (82), ...
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WO/1983/004426A1 |
A conventional free piston compression engine uses pneumatic springs to obtain the reciprocating motion of a piston, which causes losses. This free piston compression engine eleminates the pneumatic springs, thereby obtaining a high ther...
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WO/1983/001816A1 |
A positive displacement machine, particularly an internal combustion engine, comprises an oscillating piston connected to a piston pump. The cylinder of the pump is connected through valves to a pressure accumulator and to a substantiall...
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WO/1982/001395A1 |
Power plant and processes for converting gas expanding energy sources into useful forms. A piston (13, 13a, 13c, 13d and 13e) containing a magnet (38) and able to free fall within an enclosed cylinder (12, 12a, 12c, 12d and 12c), having ...
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WO/1982/000685A1 |
The engine comprises cylinder sections (11, 12) provided with feed chambers (15, 16) for additional fresh air. The two outer rings (4a, 4c) acting as pistons, draw in fresh air through intake ports (17a, 18b) and force that air to enter ...
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WO/1981/000019A1 |
A machine with free pistons comprising a frame, an inner moving assembly comprising a central cross bar and translatingly guided so as to effect a reciprocating motion along the frame axis and an outer moving assembly comprising two oute...
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WO/1980/002442A1 |
A tandem machine with opposite free pistons comprising at least two groups of motor pistons-cylinders (A, B) and compressor cylinders and the moving parts of this machine provide two gears. The compressor cylinders of the outer moving ge...
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WO/1980/001588A1 |
An opposed piston internal combustion engine comprises a scavenging plate (28), which is pressure operated. A combustion chamber is defined by piston (2) and the scavenging plate (28). The engine may be of the two stroke free piston type...
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WO/1980/000730A1 |
A free piston gas generator assembly in which the scavenging efficiency of the power cylinder (1) is increased by interconnecting in series a plurality of three or more identical motor compressor cylinders (6), by means of a piping syste...
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JP7422766B2 |
An internal combustion engine may include an engine block, a cylinder defining at least one combustion chamber, and a piston in the cylinder. The piston may travel in a first stroke from one end to an opposite end of the cylinder, and ma...
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JP2023155349A |
To provide favorable energy storage and conversion in free-piston combustion engines.Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a driver section may be provided...
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JP7341299B2 |
Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a driver section may be provided in a free-piston combustion engine for storing energy during an expansion stroke. Th...
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JP2023506883A |
A linear electromechanical system includes a stator having at least a first stator electronics circuit and a second stator electronics circuit or circuits; a free piston mover reciprocable relative to said stator; a free piston mover hav...
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JP2022188231A |
To provide a high-frequency linear combustion engine.Various embodiments of the present invention are directed toward a linear combustion engine, comprising: a cylinder 105 having a cylinder wall and a pair of ends, the cylinder 105 incl...
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JP7140857B2 |
Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a driver section may be provided in a free-piston combustion engine for storing energy during an expansion stroke. Th...
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