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Patent Searching and Data


Matches 201 - 250 out of 610

Document Document Title
WO/2000/001953A1
The invention relates to a quick switching hydraulic valve (7, 8) which opens or can be kept closed using an electric signal of low energy and which can switch very quickly with large passage. Regarding the known valves the switching val...  
WO/2000/001933A2
A free piston internal combustion engine having improved valve timing. A pair of oppositely disposed combustion chamber passageways (34, 36) extending between the combustion chamber (20) and the earth's atmosphere, each have a combustion...  
WO/1999/060258A1
A piston (16) is provided for use in a free-piston engine (10) and includes a crown portion (48) having a predetermined thickness, a plunger connection portion (50) having a passage (66) extending therethrough along the axis of the pisto...  
WO/1999/049192A1
The present invention relates to a method for controlling the power of a modular engine, wherein said method comprises separating the operative power control from the processes for controlling the fuel combustion and the combustion-produ...  
WO/1999/045633A1
An electrical power generating apparatus is developed as an internal combustion acoustically resonant engine. It has left and right acoustic formations (39), which are formed into the apparatus closure and constitute a multiple degree of...  
WO/1999/043936A1
An efficient free-piston internal-combustion engine (802, 811, 832, 14, 114, 314, 614) having an expansion ratio greater than the compression ratio. The engine has a gas bearing (804, 813, 831) and an exhaust temperature in excess of 600...  
WO/1999/034100A1
The object of the invention is to provide a device for digital hydraulic pressure transformation with low loss, intended for flow- and power control for hydraulic machines, particularly hydraulic cylinders, which via a switching device a...  
WO/1999/028025A1
Disclosed is a pulsed device for gas compression which includes a body (1) containing a cylindrical chamber (5) divided into two compartments (6, 7) as well as a free-running piston (8). The compartment (6) is adapted to carry out chemic...  
WO/1999/001651A1
A free piston internal combustion engine having improved valve timing. A pair of oppositely disposed combustion chamber passageways (34, 36) extending between the combustion chamber (20) and the earth's atmosphere, each have a combustion...  
WO/1998/054450A1
The invention relates to a hydraulic drive system for driving hydromotors. The hydromotors may be loaded with variable loads and are coupled via hydraulic transformers with the pressure conduit which is substantially maintained at a cons...  
WO/1998/046870A1
The invention relates to a free piston engine. The air required for combustion is supplied to the combustion chamber while the exhaust gasses leave the combustion chamber via an exhaust port. In order to achieve improved purging, that is...  
WO/1998/020242A1
The 1-cylinder-2-chamber motor is a new motor, with a very typical and unique use of the power of explosion and force transmission. The movements of the cylinder are transmitting the power by hydraulic and/or mechanic force. The movement...  
WO/1998/014694A1
The engine relates to an engine that works according to the principle of pulsating combustion and a method of operation for an engine comprising a pressure resistant housing (10) with a combustion chamber (12) located therein, an intake ...  
WO/1998/004819A1
A method of controlling the movement of a linear electric generator (10) moved by a pair of internal combustion pistons (11, 12) disposed in alignment and in opposition, in which current absorption is controlled in order that, during a r...  
WO/1997/035104A1
Machine power plant operation method, machine power plant operation regulation method and machine power plant. The invention is related to machine power plant and may be used, for instance, in automotive industry. To achieve minimum fuel...  
WO/1997/034079A1
A free-piston gas generator with a cylinder (2) and a piston (42) whose ends together with the cylinder (2) define a combustion chamber (60) and a buffer chamber (62), respectively, and where a piston compressor with a compression chambe...  
WO/1997/028362A1
A method for controlling the stroke of a diesel free-piston device with, e.g., a cylinder in which there are provided two pistons, which are moved synchronously towards or away from each other. At the ends of the cylinder the cylinder an...  
WO/1997/028363A1
Improvement in diesel free-piston gas generators with, e.g., a cylinder in which there are provided two pistons, which are moved synchronously towards or from each other. At the ends of the cylinder the cylinder and the pistons define a ...  
WO/1996/035046A1
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 w...  
WO/1996/033343A1
A free piston engine (10) wherein a combustion piston (12) directly drives a pumping piston (13') to pump hydraulic fluid to and fro to a linear to rotary motion pump/motor converter which is in the form of a "split cycle" machine.  
WO/1996/032576A1
A device is provided for generating a fast movement for controlling a free piston aggregate in particular, comprising a cylinder (72) with therein a first adjusting piston (51) with a first position and a second position, which adjusting...  
WO/1996/028650A1
A device for a power plant with a free piston device (1) which supplies gas for the operation of a turbine (20), and which has two pistons (3, 4) which via a synchronization device are moved in anti-phase. The exhaust gas from the turbin...  
WO/1996/007815A1
A piston centering system for a free piston machine. The invention uses a centering passageway (26) which is in communication between a work space (14) and a second space (16) which spaces are formed in a housing and are separated by a p...  
WO/1996/003575A1
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 switchin...  
WO/1996/003576A1
A free-piston engine comprises a combustion part (1), a hydraulic control system (2), an energy consumption system and an engine control system. The combustion part comprises a combustion cylinder with at least one combustion piston (4)....  
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...  
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...  
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 ...  
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...  
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...  
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, ...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  

Matches 201 - 250 out of 610