EP1702137B1 - Engine with an active mono-energy and/or bi-energy chamber with compressed air and/or additional energy and thermodynamic cycle thereof - Google Patents
Engine with an active mono-energy and/or bi-energy chamber with compressed air and/or additional energy and thermodynamic cycle thereof Download PDFInfo
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- EP1702137B1 EP1702137B1 EP04805466A EP04805466A EP1702137B1 EP 1702137 B1 EP1702137 B1 EP 1702137B1 EP 04805466 A EP04805466 A EP 04805466A EP 04805466 A EP04805466 A EP 04805466A EP 1702137 B1 EP1702137 B1 EP 1702137B1
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- Prior art keywords
- engine
- active chamber
- piston
- work
- energy
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B19/00—Positive-displacement machines or engines of flexible-wall type
- F01B19/02—Positive-displacement machines or engines of flexible-wall type with plate-like flexible members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
- F01B17/02—Engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
- F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
Definitions
- the invention relates to an engine operating in particular with compressed air or any other gas, and more particularly using a piston stroke control device having the effect of stopping the piston at its top dead center for a period of time and an ambient thermal energy recovery device that can operate in mono energy or bi energy.
- thermal heater despite the use of a fossil fuel, has the advantage of being able to use clean continuous combustions that can be catalysed or cleaned up by any known means in order to obtain emissions. pollutant.
- variable volume expansion chamber consisting of two separate capacitors, one of which is in communication with the compressed air supply and the other twinned with the cylinder and which can be placed in communication with one another or isolated in such a way that during the exhaust cycle it is possible to charge compressed air with the first of these capacities and then to establish the pressure in the second, at the end of the exhaust while the piston is stopped at its top dead center and before the recovery of its stroke, the two capacities remaining in communication and relaxing together to perform the engine time and at least one of the two capacities is provided with means for changing their volume to allow equal pressure to vary the torque resulting from the engine .
- the engine according to the invention uses a device for stopping the engine piston at top dead center. It is preferably supplied with compressed air or any other compressed gas contained in a high-pressure storage tank, through a so-called working capacity buffer capacity.
- the working capacity in bi energy version comprises an air heating device powered by additional energy (fossil or other energy) for increasing the temperature and / or the pressure of the air passing through it.
- the engine expansion chamber according to the invention actively participates in the work.
- the engine according to the invention is called active chamber engine.
- the engine according to the invention is advantageously equipped with a variable flow regulator according to WO 03/089764 A1 dynamic expansion valve that allows to supply the working capacity to its operating pressure by compressed air from the storage tank by performing a relaxation without work of the isothermal type.
- thermodynamic cycle according to the invention is characterized by an isothermal expansion without work allowed by the dynamic expansion valve followed by a transfer accompanied by a very slight relaxation almost isothermal - for example a capacity of 3,000 cubic centimeters in a capacity of 3050 centimeters cubic - with working by the use of the air pressure included in the working capacity during the filling of the expansion chamber, then a polytropic expansion of the expansion chamber in the engine cylinder with work and lowering of the temperature to end with the escape of the air relaxed to the atmosphere.
- the compressed air contained in the working capacity is heated by additional energy in a thermal heater.
- This arrangement makes it possible to increase the amount of usable and available energy by the fact that the compressed air before its introduction into the active chamber will increase its temperature and increase pressure and / or volume allowing the increase in performance and / or autonomy.
- the use of a thermal heater has the advantage of being able to use clean continuous combustions that can be catalysed or cleaned up by any known means in order to obtain emissions of minute pollutants.
- the thermal heater can use for energy a fossil fuel such as gasoline gas, or LPG gas CNG, it can use bio fuels or alcohols - ethanol, methanol - to achieve a bi-energy operation with external combustion where a burner will cause a rise in temperature.
- a fossil fuel such as gasoline gas, or LPG gas CNG
- bio fuels or alcohols - ethanol, methanol - to achieve a bi-energy operation with external combustion where a burner will cause a rise in temperature.
- the heater advantageously uses thermochemical processes based on absorption and desorption processes, such as those used and described, for example in patents EP 0 307297 A1 and EP 0 382586 B1 these processes using the evaporation transformation of a fluid for example liquid ammonia gas reacting with salts such as calcium chloride, manganese or other, the system operating as a thermal battery.
- the active chamber motor is equipped with a burner heat heater, or the like, and a thermochemical heater of the aforementioned type that can be used jointly or successively, during phase 1 of the heater thermochemical where the thermal burner heater will allow to regenerate (phase 2) the thermochemical heater when the latter is empty by heating its reactor during the continued operation of the group with the use of the burner heater.
- the active chamber engine according to the invention is an external combustion engine engine said external combustion engine.
- the combustions of said heater can be internal by bringing the flame directly into contact with the operating compressed air, the engine is then said to "external-internal combustion” or the combustions of said heater are external by heating the air operating through an exchanger and the engine is then said to "external-external combustion".
- variable-volume expansion chamber known as the active chamber consists of a so-called sliding piston sliding in a cylinder and connected by a connecting rod to the crankshaft of the engine, a classic concept which determines a two-phase kinematics: downward stroke and ascending race.
- the engine piston is controlled by a piston stop device at the top dead center which determines a three-phase kinematics: upstroke, stop at top dead center and down stroke.
- the strokes of the load piston and of the engine piston are different, that of the load piston being longer and predetermined so that when in the downward stroke of the load piston, the volume chosen as the "actual expansion chamber volume" is reached, the downward stroke of the engine piston starts and during this downward stroke, the load piston continues and ends its own down stroke - still producing a job - then begins its upward stroke as the shorter and faster racing engine piston catches it in its upstroke so that both pistons reach their top dead spots substantially at the same time.
- the load piston undergoes during the beginning of its upward stroke a negative work which, in fact, has been compensated by a surplus of positive work in the end of its downward stroke.
- the engine according to the invention is controlled in torque and in speed, by controlling the pressure in the working capacity, said control being advantageously provided by the dynamic expander, when it operates in dual energy mode with additional energy (fossil or other) an electronic computer controls the amount of additional energy provided, depending on the pressure in said work capacity
- the active chamber engine according to the invention is coupled to a compressor air supply for supplying compressed air to the high-pressure compressed air storage tank.
- the bi-energy active chamber engine thus equipped normally operates in two modes by using, on a vehicle in town for example, zero pollution operation with compressed air contained in the high pressure storage tank, and on the road, always for the example, in operation additional energy with its thermal heater powered by fossil energy or other, while supplying air through an air compressor the high pressure storage tank.
- the air compressor directly supplies the working capacity.
- the control of the engine is carried out by the pressure control of the compressor and the dynamic expander between the high pressure storage tank and the working capacity remains closed.
- the air compressor supplies either the high pressure reservoir or the working capacity or the two volumes in combination.
- the active chamber engine is also feasible in mono energy with fossil fuel or other when coupled to an air compressor supplying the working capacity as described above, the high pressure compressed air storage tank being then purely and simply deleted.
- the motor consists of several expansion stages, each stage comprising an active chamber according to the invention; between each stage is positioned a heat exchanger for heating the exhaust air of the preceding stage in the case of a mono-energy operation compressed air and / or an additional energy heating device in the case of operation in bi energy.
- the displacements of the next stage being larger than those of the previous stage.
- the expansion in the first cylinder having produced a lowering of temperature the air will be heated advantageously in an air-air heat exchanger with the ambient temperature.
- a bi-energy engine in additional energy mode it is proceeded to the heating of the air by additional energy in a thermal heater, for example fossil.
- the exhaust air is directed to a single multi-stage heater, thus making it possible to use only one combustion source.
- the heat exchangers may be air-to-air exchangers or liquid air or any other device or gas producing the desired effect.
- the active chamber engine according to the invention can be used on all land, maritime, railway, aeronautical vehicles.
- the active chamber motor according to the invention can also and advantageously find its application in the emergency generator sets, as well as in many domestic cogeneration applications producing electricity, heating and air conditioning.
- FIG. 1 represents an active chamber motor according to the invention, in which the engine cylinder in which the piston 1 (shown at its top dead center) slides in a cylinder 2, which is controlled by a lever pressure.
- the piston 1 is connected by its axis to the free end 1A of a pressure lever consisting of an arm 3 articulated on a common axis 5 to another arm 4 fixed oscillating on a stationary axis 6.
- a control rod 7 On the axis common to the two arms 3 and 4 is attached a control rod 7 connected to the crankpin 8 of a crankshaft 9 rotating on its axis 10.
- the control rod 7 exerts a force on the common axis 5 of the two arms 3 and 4 of the pressure lever, thus allowing the displacement of the piston 1 along the axis of the cylinder 2, and transmits back to the crankshaft 9 the forces exerted on the piston 1 during the engine time thus causing its rotation.
- the engine cylinder is in communication through a passage 12 in its upper part with the active chamber cylinder 13 in which slides a piston 14 said load piston connected by a connecting rod 15 to a crankpin 16 of the crankshaft 9.
- An intake duct 17 controlled by a valve 18 opens into the passage 12 connecting the engine cylinder 2 and the active chamber cylinder 13 and supplies the engine with compressed air from the working chamber 19 maintained at the working pressure itself fed with compressed air through a conduit 20 controlled by a dynamic expander 21 by the high pressure storage tank 22.
- a conduit 20 controlled by a dynamic expander 21 by the high pressure storage tank 22 In the upper part of the cylinder 2 is provided an exhaust duct 23 controlled by an exhaust valve 24.
- a device controlled by the accelerator pedal controls the dynamic expander 21 to allow to regulate the pressure in the working chamber and thus drive the motor.
- FIG. 2 shows schematically, seen in cross section, the active chamber motor according to the invention being admitted; the engine piston 1 is stopped at its top dead position and the intake valve 18 has just been opened, the pressure of the air contained in the working capacity 19 pushes the load piston 14 while filling the cylinder with the active chamber 13 and producing a job by causing by its connecting rod 15 the rotation of the crankshaft 9, the work being considerable because performed at almost constant pressure. By continuing its rotation, the crankshaft authorizes (FIG.
- FIG. 5 shows the shape of the comparative curves of the piston strokes where the rotation of the crankshaft can be seen on the abscissa and the displacement of the pistons, the load and the engine, from their top dead center to their bottom dead point, and return where, according to the invention, the stroke of the load piston is greater than that of the engine piston.
- the graph is divided into 4 main phases. During phase A, the engine piston is kept at its top dead center and the load piston performs most of its downward stroke producing a job and then in Phase B the engine piston performs its descending downward stroke producing a job. while the load piston finishes its downward stroke also producing a job. As the load piston reaches its bottom dead point, phase C, the engine piston continues its downward stroke and the load piston begins its upward stroke.
- phase D the two pistons reach their top dead center almost simultaneously for start a new cycle.
- phases A, B, C the engine produces a job.
- FIG. 6 represents the graph of the thermodynamic cycle in mono-energy compressed air mode, in which the different phases of the cycle can be seen in the different capacities (on the abscissa) constituting the active-chamber motor according to the invention, the pressures being in the ordinate ; in the first capacity, which is the storage tank, we see a network of isothermal curves ranging from the storage pressure Pst to the initial working pressure PIT, the storage pressure decreasing as the tank is emptied while the PIT pressure will be controlled depending on the desired coupling between a minimum operating pressure and a maximum operating pressure here, for example, between 10 and 30 bar. In the working capacity during the charging of the active chamber, the pressure remains almost identical.
- the compressed air contained in the working capacity is transferred to the active chamber producing a job accompanied by a very slight pressure decrease, for example, for a working capacity of 3000 cm3. and an active chamber of 35 cm3, the pressure drop is 1.16% and, still for the example, a real working pressure of 29.65 bar for an initial working pressure of 30 bar.
- the engine piston starts its downward stroke with a polytropic expansion which produces a work with lowering of the pressure until the opening of the exhaust valve (for example around 2 bar) followed by the return to atmospheric pressure. during the escape time, to start a new cycle again.
- FIG. 7 shows the engine and its assembly in a bi-energy version with additional energy or it can be seen in the working capacity 19 a schematic device for heating the compressed air with additional energy input here, a burner 25
- the combustion shown in this figure is therefore an external-internal combustion and makes it possible to considerably increase the volume and / or the pressure of the compressed air coming from the storage tank.
- FIG. 8 represents a graph of the thermodynamic cycle in dual energy compressed air and additional energy mode, in which the different phases of the cycle can be seen in the different capacities constituting the active-chamber motor according to the invention, in the ordinate the pressures in the first capacity which is the storage tank we see a network of isothermal curves ranging from the storage pressure Pst to the initial working pressure PIT, the storage pressure decreasing as the tank empties while the pressure PIT will be controlled according to the desired torque between a minimum operating pressure and a maximum operating pressure here for the example between 10 and 30 bar.
- the reheating of the compressed air makes it possible to considerably increase the pressure from the initial pressure PIT to the final working pressure PFT: for example for a PIT of 30 bar a temperature increase of the order of 300 degrees makes it possible to obtain a PFT of the order of 60 bar.
- the inlet valve opens, the compressed air contained in the working capacity is transferred into the active chamber, producing a job, accompanied by a very slight pressure decrease: for example for a working capacity of 3000 cm3 and an active chamber of 35 cm3 the pressure drop is 1.16% is and still for the example, a real working pressure of 59.30 bars for an initial working pressure of 60 bars; then the engine piston starts its downward stroke with a polytropic expansion that produces a work with lowering of the pressure until the opening of the exhaust valve (for example around 4 bars) followed by the return to atmospheric pressure during the exhaust time, to start a new cycle.
- the active chamber motor also operates in dual-energy mode autonomously with the so-called additional fossil energy (or other) (FIG. 9) when, according to a variant of the invention, it drives a compressed air compressor. 27 which feeds the storage tank 22.
- the general operation of the machine is the same as that described previously in FIGS. 1 to 4. However, this arrangement makes it possible to fill the storage tank during operation with additional energy but causes a relatively high energy loss due to the compressor.
- the air compressor directly supplies the working capacity; in this case of operation, the dynamic expansion valve 21 is kept closed and the compressor supplies compressed air to the working capacity in which the latter is heated by the heating device and increases pressure and / or volume to supply the active chamber 13 as described in the previous cases.
- the motor is controlled by the pressure regulation directly by the compressor and the energy loss due to the compressor is much less than in the previous case.
- the compressor supplies the high-pressure storage tank 22 and the working capacity 19 simultaneously with the energy requirements 19.
- a bidirectional valve 28 can supply either the reservoir storage 22 is the working capacity 19 or both simultaneously. The choice is then a function of the energy requirements of the engine with regard to the energy requirements of the compressor: if the demand on the engine is relatively low, the high pressure reservoir is then supplied; if the energy needs of the engine are high, only the working capacity is then fed.
- FIG. 11 schematically represents an active chamber motor according to the invention comprising two stages of relaxation where the storage tank can be seen the high-pressure compressed air 22 the dynamic expansion valve 21 the working capacity 19 and the first stage comprising a driving cylinder 2 in which the piston 1 (shown at its top dead center), which is controlled by a pressure lever, slides.
- the piston 1 is connected by its axis to the free end 1A of a pressure lever consisting of an arm 3 articulated on a common axis 5 to another arm 4 fixed oscillating on a stationary axis 6.
- On the axis common to the two arms 3 and 4 is attached a control rod 7 connected to the crank pin 8 of a crankshaft 9 rotating on its axis 10.
- the engine cylinder is in communication through a passage 12 in its upper part with the active chamber cylinder 13 in which slides a piston 14 said load piston connected by a connecting rod 15 to a crankpin 16 of the crankshaft 9.
- An intake duct 17 controlled by a valve 18 opens into the passage 12 connecting the engine cylinder 2 and the active chamber cylinder 13 and supplies the engine with compressed air from the working chamber 19 maintained at the working pressure and itself fed compressed by a duct 20 controlled by a dynamic expansion valve 21.
- the exhaust duct 23 is connected through an exchanger 29 to the inlet 17B of the second stage of the engine comprising a motor cylinder 2B in which slides the piston 1B which is controlled by a pressure lever.
- the piston 1B is connected by its axis to the free end 1C of a pressure lever consisting of an arm 3B articulated on a common axis 5B to another arm 4B fixed oscillating on a stationary axis 6B.
- a control rod 7B connected to the crank pin 8B of a crankshaft 9 rotating on its axis 10.
- the control rod 7B exerts a force on the common axis 5B of the two arms 3B and 4B of the pressure lever, thereby allowing the piston 1B to move along the axis of the cylinder 2B, and in return to the crankshaft 9 transmit the forces exerted on the piston 1B during the engine time thereby causing its rotation.
- the engine cylinder is in communication through a passage 12B in its upper part with the active chamber cylinder 13B in which slides a piston 14B said load piston connected by a connecting rod 15B to a crank pin 16B of the crankshaft 9.
- a intake pipe 17B controlled by a valve 18B opens into the passage 12B connecting the engine cylinder 2B and the active chamber cylinder 13B and provides power to the engine with compressed air.
- the second floor is shown next to the first floor. It goes without saying that preferentially it is used a single crankshaft and that the second floor is on the same longitudinal plane as the first floor.
- the exhaust duct 23 of the first engine stage is connected to through an air-to-air exchanger 29 to the intake duct 17B of the second engine stage.
- the first stage will be dimensioned so that at the end of engine relaxation, the exhaust air has a residual pressure to allow, after its heating in the air-air exchanger, where it will increase pressure and / or volume, to have sufficient energy to properly ensure the operation of the next stage.
- FIG. 12 shows a monoenergy active chamber engine operating with a fossil fuel, the engine is coupled to a compressor 27 which supplies compressed air to the working capacity 19 which here comprises a burner 25 supplied with energy by a gas cylinder 26.
- the general operation of the machine is the same as that described above.
- the active chamber motor is described with operation with compressed air. However, it can use any compressed gas without changing the described invention.
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Abstract
Description
L'invention concerne un moteur fonctionnant notamment avec de l'air comprimé ou tout autre gaz, et plus particulièrement utilisant un dispositif de contrôle de la course du piston ayant pour effet l'arrêt du piston à son point mort haut durant une période de temps ainsi qu'un dispositif de récupération d'énergie thermique ambiante pouvant fonctionner en mono énergie ou en bi énergie.The invention relates to an engine operating in particular with compressed air or any other gas, and more particularly using a piston stroke control device having the effect of stopping the piston at its top dead center for a period of time and an ambient thermal energy recovery device that can operate in mono energy or bi energy.
Le rédacteur a déposé de nombreux brevets concernant des motorisations ainsi que leurs installations utilisant de l'air comprimé pour un fonctionnement totalement propre en site urbain et suburbain :
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WO 96/27737 WO 97/00655 -
WO 97/48884 WO 98/12062 WO 98/15440 -
WO 98/32963 WO 99/37885 WO 99/37885
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WO 96/27737 WO 97/00655 -
WO 97/48884 WO 98/12062 WO 98/15440 -
WO 98/32963 WO 99/37885 WO 99/37885
Pour la mise en oeuvre de ces inventions, il a également décrit dans sa demande de brevet
Dans sa demande de brevet
L'utilisation d'un réchauffeur thermique, et ce malgré l'utilisation d'un carburant fossile, présente l'avantage de pouvoir utiliser des combustions continues propres qui peuvent être catalysées ou dépolluées par tous moyens connus dans le but d'obtenir des émissions de polluant infimes.The use of a thermal heater, despite the use of a fossil fuel, has the advantage of being able to use clean continuous combustions that can be catalysed or cleaned up by any known means in order to obtain emissions. pollutant.
L'auteur a déposé un brevet
Dans ces types de moteur fonctionnant avec de l'air comprimé et comportant un réservoir de stockage d'air comprimé, il est nécessaire de détendre l'air comprimé stocké à très haute pression dans le réservoir mais dont la pression diminue à mesure que le réservoir se vide à une pression intermédiaire stable dite pression finale d'utilisation dans une capacité tampon dite capacité de travail avant son utilisation dans le ou les cylindres moteur. Les détendeurs conventionnels à clapets et ressorts bien connus ont des débits très faibles et leur utilisation pour cette application demande des appareils très lourds et peu performants ; en outre, ils sont très sensibles au givrage dû à l'humidité de l'air refroidi lors de la détente.In these types of engines operating with compressed air and having a compressed air storage tank, it is necessary to relax the compressed air stored at very high pressure in the tank but whose pressure decreases as the reservoir is emptied at a stable intermediate pressure called final pressure of use in a buffer capacity said working capacity before its use in the engine cylinder or cylinders. Conventional valves with valves and springs well known have very low flow rates and their use for this application requires very heavy and inefficient devices; in addition, they are very sensitive to icing due to the humidity of the cooled air during the relaxation.
Pour résoudre ce problème, l'auteur a également déposé une demande brevet
Le rédacteur a également déposé une demande de brevet
Dans le fonctionnement de ces moteurs à « détente de charge » le remplissage de la chambre représente toujours une détente nuisible au rendement général de la machine.In the operation of these "load-expansion" motors, the filling of the chamber always represents a detrimental detriment to the overall efficiency of the machine.
Le moteur selon l'invention utilise un dispositif d'arrêt du piston moteur au point mort haut. Il est alimenté préférentiellement par de l'air comprimé ou tout autre gaz comprimé contenu dans un réservoir de stockage haute pression, à travers une capacité tampon dite capacité de travail. La capacité de travail en version bi énergie comporte un dispositif de réchauffage de l'air alimenté par une énergie additionnelle (fossile ou autre énergie) permettant d'augmenter la température et/ou la pression de l'air qui la traverse.The engine according to the invention uses a device for stopping the engine piston at top dead center. It is preferably supplied with compressed air or any other compressed gas contained in a high-pressure storage tank, through a so-called working capacity buffer capacity. The working capacity in bi energy version comprises an air heating device powered by additional energy (fossil or other energy) for increasing the temperature and / or the pressure of the air passing through it.
Le moteur selon l'invention est caractérisé par les moyens mis en oeuvre pris dans leur ensemble ou séparément et plus particulièrement :
- En ce que la chambre d'expansion est constituée d'un volume variable équipé de moyens permettant de produire un travail et qu'elle est jumelée et en contact par un passage permanent avec l'espace compris au-dessus du piston moteur
- En ce que, durant l'arrêt du piston moteur à son point mort haut, l'air ou le gaz sous pression est admis dans la chambre d'expansion lorsque celle-ci est à son plus petit volume et, sous la poussée, va augmenter son volume en produisant un travail,
- En ce que la chambre d'expansion étant maintenue sensiblement à son volume maximum, l'air comprimé y contenu se détend ensuite dans le cylindre moteur repoussant ainsi le piston moteur dans sa course descendante en fournissant un travail à son tour,
- En ce que, durant la remontée du piston moteur pendant le temps échappement, le volume variable de la chambre d'expansion est ramené à son plus petit volume pour recommencer un cycle de travail complet.
- In that the expansion chamber consists of a variable volume equipped with means for producing a work and that it is twinned and in contact with a permanent passage with the space included above the engine piston
- In that, during the stopping of the engine piston at its top dead center, the air or the pressurized gas is admitted into the expansion chamber when it is at its smallest volume and, under the thrust, goes increase its volume by producing a job,
- In that the expansion chamber is maintained substantially at its maximum volume, the compressed air contained therein then relaxes in the engine cylinder thus pushing the engine piston in its downward stroke by providing a job in turn,
- In that, during the raising of the engine piston during the exhaust time, the variable volume of the expansion chamber is reduced to its smallest volume to start a complete work cycle.
La chambre d'expansion du moteur selon l'invention participe activement au travail. Le moteur selon l'invention est dit moteur à chambre active.The engine expansion chamber according to the invention actively participates in the work. The engine according to the invention is called active chamber engine.
Le moteur selon l'invention est avantageusement équipé d'un détendeur à débit variable selon
Le cycle thermodynamique selon l'invention est caractérisé par une détente isotherme sans travail permise par le détendeur dynamique suivi d'un transfert accompagné d'une très légère détente quasi isotherme - par exemple une capacité de 3 000 centimètres cube dans une capacité de 3050 centimètres cube - avec travail par l'utilisation de la pression de l'air compris dans la capacité de travail durant le remplissage de la chambre d'expansion, puis d'une détente polytropique de la chambre d'expansion dans le cylindre moteur avec travail et abaissement de la température pour se terminer par l'échappement de l'air détendu à l'atmosphère.The thermodynamic cycle according to the invention is characterized by an isothermal expansion without work allowed by the dynamic expansion valve followed by a transfer accompanied by a very slight relaxation almost isothermal - for example a capacity of 3,000 cubic centimeters in a capacity of 3050 centimeters cubic - with working by the use of the air pressure included in the working capacity during the filling of the expansion chamber, then a polytropic expansion of the expansion chamber in the engine cylinder with work and lowering of the temperature to end with the escape of the air relaxed to the atmosphere.
Le cycle thermodynamique selon l'invention comprend donc quatre phases en mode mono énergie air comprimé :
- Une détente isotherme sans travail,
- Un transfert - légère détente avec travail dit quasi-isotherme,
- Une détente polytropique avec travail,
- Un échappement à pression ambiante.
- Isothermal relaxation without work,
- A transfer - slight relaxation with work called quasi-isothermal,
- A polytropic relaxation with work,
- An exhaust at ambient pressure.
Dans son application bi-énergie selon l'invention, et en mode carburant additionnel, l'air comprimé contenu dans la capacité de travail est réchauffé par une énergie additionnelle dans un réchauffeur thermique. Cette disposition permet d'augmenter la quantité d'énergie utilisable et disponible par le fait que l'air comprimé avant son introduction dans la chambre active va accroître sa température et augmenter de pression et/ou de volume permettant l'augmentation des performances et/ou de l'autonomie. L'utilisation d'un réchauffeur thermique présente l'avantage de pouvoir utiliser des combustions continues propres qui peuvent être catalysées ou dépolluées par tous moyens connus dans le but d'obtenir des émissions de polluants infimes.In its bi-energy application according to the invention, and in additional fuel mode, the compressed air contained in the working capacity is heated by additional energy in a thermal heater. This arrangement makes it possible to increase the amount of usable and available energy by the fact that the compressed air before its introduction into the active chamber will increase its temperature and increase pressure and / or volume allowing the increase in performance and / or autonomy. The use of a thermal heater has the advantage of being able to use clean continuous combustions that can be catalysed or cleaned up by any known means in order to obtain emissions of minute pollutants.
Le réchauffeur thermique peut utiliser pour énergie un carburant fossile tel qu'essence gazole, ou bien gaz GPL GNV, il peut utiliser des carburants bio ou des alcools - éthanol, methanol - permettant de réaliser ainsi un fonctionnement bi énergie à combustion externe où un brûleur va provoquer une élévation de température.The thermal heater can use for energy a fossil fuel such as gasoline gas, or LPG gas CNG, it can use bio fuels or alcohols - ethanol, methanol - to achieve a bi-energy operation with external combustion where a burner will cause a rise in temperature.
Selon une variante de l'invention, le réchauffeur utilise avantageusement des procédés thermochimiques basés sur des procédés d'absorption et de désorption, tels que ceux utilisés et décrits, par exemple dans les brevets
Selon une variante de l'invention, le moteur à chambre active est équipé d'un réchauffeur thermique à brûleur, ou autre, et d'un réchauffeur thermochimique de type précédemment cité pouvant être utilisé conjointement ou successivement, lors de la phase 1 du réchauffeur thermochimique où le réchauffeur thermique à brûleur va permettre de régénérer (phase 2) le réchauffeur thermochimique lorsque ce dernier est vide en réchauffant son réacteur durant la poursuite du fonctionnement du groupe avec l'utilisation du réchauffeur à brûleur.According to a variant of the invention, the active chamber motor is equipped with a burner heat heater, or the like, and a thermochemical heater of the aforementioned type that can be used jointly or successively, during
Dans le cas de l'utilisation d'un réchauffeur à combustion, le moteur à chambre active selon l'invention est un moteur à chambre de combustion externe dit moteur à combustion externe. Toutefois, soit les combustions dudit réchauffeur peuvent être internes en amenant la flamme directement au contact de l'air comprimé de fonctionnement, le moteur est alors dit à « combustion externe-interne », soit les combustions dudit réchauffeur sont externes en réchauffant l'air de fonctionnement au travers d'un échangeur et le moteur est alors dit à « combustion externe-externe ».In the case of the use of a combustion heater, the active chamber engine according to the invention is an external combustion engine engine said external combustion engine. However, either the combustions of said heater can be internal by bringing the flame directly into contact with the operating compressed air, the engine is then said to "external-internal combustion" or the combustions of said heater are external by heating the air operating through an exchanger and the engine is then said to "external-external combustion".
En mode de fonctionnement avec énergie additionnelle, le cycle thermodynamique comprend alors cinq phases :
- Une détente isotherme,
- Une augmentation de la température,
- Un transfert - légère détente avec travail dit quasi-isotherme,
- Une détente polytropique avec travail,
- Un échappement à pression ambiante.
- Isothermal relaxation,
- An increase in temperature,
- A transfer - slight relaxation with work called quasi-isothermal,
- A polytropic relaxation with work,
- An exhaust at ambient pressure.
Toutes dispositions mécaniques, hydrauliques électriques ou autres permettant, en regard du cycle du moteur, l'accomplissement en trois phases du cycle de travail de la chambre active, à savoir :
- pendant l'arrêt du piston moteur à son point mort haut : admission d'une charge dans la chambre active produisant un travail en augmentant son volume,
- pendant la course de détente du piston moteur: maintien à un volume prédéterminé qui est le volume réel de chambre d'expansion,
- pendant le temps d'échappement du piston moteur: repositionnement de la chambre active à son volume minimum pour permettre le renouvellement du cycle,
- during the stopping of the engine piston at its top dead center: admission of a charge into the active chamber producing a job by increasing its volume,
- during the expansion stroke of the engine piston: holding at a predetermined volume which is the actual volume of the expansion chamber,
- during the exhaust time of the engine piston: repositioning the active chamber to its minimum volume to allow the renewal of the cycle,
Préférentiellement, la chambre d'expansion à volume variable dite chambre active est constituée d'un piston dit piston de charge coulissant dans un cylindre et relié par une bielle au vilebrequin du moteur, concept classique qui détermine une cinématique à deux phases : course descendante et course ascendante.Preferably, the variable-volume expansion chamber known as the active chamber consists of a so-called sliding piston sliding in a cylinder and connected by a connecting rod to the crankshaft of the engine, a classic concept which determines a two-phase kinematics: downward stroke and ascending race.
Le piston moteur est commandé par un dispositif d'arrêt du piston au point mort haut qui détermine une cinématique à trois phases : course ascendante, arrêt au point mort haut et course descendante.The engine piston is controlled by a piston stop device at the top dead center which determines a three-phase kinematics: upstroke, stop at top dead center and down stroke.
Pour permettre le calage du moteur selon l'invention, les courses du piston de charge et du piston moteur sont différentes, celle du piston de charge étant plus longue et prédéterminée de telle sorte que lorsque dans la course descendante du piston de charge, le volume choisi comme étant le «volume réel de chambre d'expansion » est atteint, la course descendante du piston moteur commence et que, durant cette course descendante, le piston de charge continue et termine sa propre course descendante - produisant toujours un travail - puis commence sa course ascendante alors que le piston moteur de course plus courte et plus rapide, le rattrape dans sa course ascendante afin que les deux pistons atteignent leurs points morts hauts sensiblement en même temps. Il est à noter que le piston de charge subit durant le début de sa course ascendante un travail négatif qui, de fait, a été compensé par un surcroît de travail positif dans la fin de sa course descendante.To enable the engine to be wedged according to the invention, the strokes of the load piston and of the engine piston are different, that of the load piston being longer and predetermined so that when in the downward stroke of the load piston, the volume chosen as the "actual expansion chamber volume" is reached, the downward stroke of the engine piston starts and during this downward stroke, the load piston continues and ends its own down stroke - still producing a job - then begins its upward stroke as the shorter and faster racing engine piston catches it in its upstroke so that both pistons reach their top dead spots substantially at the same time. It should be noted that the load piston undergoes during the beginning of its upward stroke a negative work which, in fact, has been compensated by a surplus of positive work in the end of its downward stroke.
Lors du fonctionnement en mode air comprimé, sur un véhicule en site urbain pour un fonctionnement sans pollution par exemple, seule la pression de l'air comprimé stocké dans le réservoir haute pression est utilisée; en fonctionnement bi-énergie en mode énergie additionnelle, (fossile ou autre), sur un véhicule sur route avec une pollution infime par exemple, le réchauffage de la capacité de travail est alors commandé, permettant d'augmenter la température de l'air qui la traverse et par voie de conséquence, son volume et/ou sa pression utilisables permettant ainsi de meilleures performances et/ou autonomie.When operating in compressed air mode, on a vehicle in an urban site for pollution-free operation, for example, only the pressure of the compressed air stored in the high pressure tank is used; in bi-energy operation in additional energy mode, (fossil or other), on a road vehicle with a small pollution for example, the heating of the working capacity is then controlled, to increase the temperature of the air which the cross member and consequently, its usable volume and / or pressure allowing better performance and / or autonomy.
Le moteur selon l'invention est piloté en couple et en régime, par le contrôle de la pression dans la capacité dé travail, ledit contrôle étant avantageusement assuré par le détendeur dynamique, lorsqu'il fonctionne en mode bi-énergie avec énergie additionnelle (fossile ou autre) un calculateur électronique contrôle la quantité d'énergie additionnelle apportée, en fonction de la pression dans ladite capacité de travailThe engine according to the invention is controlled in torque and in speed, by controlling the pressure in the working capacity, said control being advantageously provided by the dynamic expander, when it operates in dual energy mode with additional energy (fossil or other) an electronic computer controls the amount of additional energy provided, depending on the pressure in said work capacity
Selon une variante de l'invention, pour permettre le fonctionnement autonome du moteur lors de son utilisation en énergie additionnelle et/ou lorsque le réservoir de stockage d'air comprimé est vide le moteur à chambre active selon l'invention est couplé à un compresseur d'air permettant d'alimenter en air comprimé le réservoir de stockage d'air comprimé haute pression.According to a variant of the invention, to allow the autonomous operation of the engine during its use in additional energy and / or when the compressed air storage tank is empty the active chamber engine according to the invention is coupled to a compressor air supply for supplying compressed air to the high-pressure compressed air storage tank.
Le moteur à chambre active bi énergie ainsi équipé fonctionne normalement selon deux modes en utilisant, sur un véhicule en ville par exemple, le fonctionnement zéro pollution avec de l'air comprimé contenu dans le réservoir de stockage haute pression, et sur route, toujours pour l'exemple, en fonctionnement énergie additionnelle avec son réchauffeur thermique alimenté par une énergie fossile ou autre, tout en réalimentant en air par un compresseur d'air le réservoir de stockage haute pression.The bi-energy active chamber engine thus equipped normally operates in two modes by using, on a vehicle in town for example, zero pollution operation with compressed air contained in the high pressure storage tank, and on the road, always for the example, in operation additional energy with its thermal heater powered by fossil energy or other, while supplying air through an air compressor the high pressure storage tank.
Selon une autre variante de l'invention le compresseur d'air alimente directement la capacité de travail. Dans ce cas, le pilotage du moteur est réalisé par le pilotage en pression du compresseur et le détendeur dynamique entre le réservoir de stockage haute pression et la capacité de travail reste obturé.According to another variant of the invention, the air compressor directly supplies the working capacity. In this case, the control of the engine is carried out by the pressure control of the compressor and the dynamic expander between the high pressure storage tank and the working capacity remains closed.
Selon une autre variante de ces dispositions, le compresseur d'air alimente soit le réservoir haute pression soit la capacité de travail soit encore les deux volumes en combinaison.According to another variant of these arrangements, the air compressor supplies either the high pressure reservoir or the working capacity or the two volumes in combination.
Le moteur à chambre active bi énergie selon l'invention possède de fait trois modes principaux de fonctionnement :
- mono énergie air comprimé,
- bi énergie air comprimé plus énergie additionnelle,
- mono énergie à carburant d'énergie additionnelle.
- mono energy compressed air,
- bi energy compressed air plus additional energy,
- mono energy to fuel additional energy.
Le moteur à chambre active est également réalisable en mono énergie à carburant fossile ou autre lorsqu'il est couplé à un compresseur d'air alimentant la capacité de travail comme décrit ci-dessus, le réservoir de stockage d'air comprimé haute pression étant alors purement et simplement supprimé.The active chamber engine is also feasible in mono energy with fossil fuel or other when coupled to an air compressor supplying the working capacity as described above, the high pressure compressed air storage tank being then purely and simply deleted.
Dans le cas d'un fonctionnement en mode énergie additionnelle, avec l'utilisation d'une combustion externe-externe l'échappement du moteur à chambre active peut être recyclé à l'admission du compresseur.In the case of operation in additional energy mode, with the use of external-external combustion the exhaust of the active chamber engine can be recycled to the intake of the compressor.
Selon une variante de l'invention le moteur est constitué de plusieurs étages de détente, chaque étage comportant une chambre active selon l'invention ; entre chaque étage est positionné un échangeur permettant de réchauffer l'air de l'échappement de l'étage précédent dans le cas d'un fonctionnement mono énergie air comprimé et/ou un dispositif de réchauffage à énergie additionnelle dans le cas d'un fonctionnement en bi énergie. Les cylindrées de l'étage suivant étant plus importantes que celles de l'étage précédent.According to a variant of the invention, the motor consists of several expansion stages, each stage comprising an active chamber according to the invention; between each stage is positioned a heat exchanger for heating the exhaust air of the preceding stage in the case of a mono-energy operation compressed air and / or an additional energy heating device in the case of operation in bi energy. The displacements of the next stage being larger than those of the previous stage.
Dans le cas d'un moteur mono énergie air comprimé la détente dans le premier cylindre ayant produit un abaissement de température, le réchauffement de l'air se fera avantageusement dans un échangeur air-air avec la température ambiante.In the case of a mono-energy compressed air engine, the expansion in the first cylinder having produced a lowering of temperature, the air will be heated advantageously in an air-air heat exchanger with the ambient temperature.
Dans le cas d'un moteur bi-énergie en mode énergie additionnelle, il est procédé au réchauffement de l'air par une énergie additionnelle dans un réchauffeur thermique, par exemple fossile.In the case of a bi-energy engine in additional energy mode, it is proceeded to the heating of the air by additional energy in a thermal heater, for example fossil.
Selon une variante de cette disposition, après chaque étage l'air de l'échappement est dirigé vers un seul réchauffeur à plusieurs étages permettant ainsi de n'utiliser qu'une source de combustion.According to a variant of this arrangement, after each stage, the exhaust air is directed to a single multi-stage heater, thus making it possible to use only one combustion source.
Les échangeurs thermiques peuvent être des échangeurs air-air ou air liquide ou tout autre dispositif ou gaz produisant l'effet recherché.The heat exchangers may be air-to-air exchangers or liquid air or any other device or gas producing the desired effect.
Le moteur à chambre active selon l'invention peut être utilisé sur tous véhicules terrestres, maritimes, ferroviaires, aéronautiques. Le moteur à chambre active selon l'invention peut également et avantageusement trouver son application dans les groupes électrogènes de secours, de même que dans de nombreuses applications domestiques de cogénération produisant de l'électricité, du chauffage et de la climatisation.The active chamber engine according to the invention can be used on all land, maritime, railway, aeronautical vehicles. The active chamber motor according to the invention can also and advantageously find its application in the emergency generator sets, as well as in many domestic cogeneration applications producing electricity, heating and air conditioning.
D'autres buts, avantages et caractéristiques de l'invention apparaîtront à la lecture de la description, à titre non limitatif, de plusieurs modes de réalisation, faite en regard des dessins annexés où :
- La figure 1 représente schématiquement un moteur à chambre active vu en coupe transversale, et son dispositif d'alimentation en air HP.
- Les figures 2 à 4 représentent sur des vues schématiques, en coupe transversale, les différentes phases de fonctionnement du moteur selon l'invention.
- La Figure 5 représente une courbe comparative de la cinématique des courses de piston de charge et de piston moteur.
- La figure 6 représente un graphique du cycle thermodynamique en mode mono énergie air comprimé.
- La figure 7 représente schématiquement un moteur à chambre active vu en coupe transversale et son dispositif d'alimentation en air HP comportant un dispositif de réchauffage de l'air par combustion.
- La figure 8 représente un graphique du cycle thermodynamique en mode bi-énergie air comprimé et énergie additionnelle.
- La figure 9 représente, vu schématiquement, un moteur à chambre active selon l'invention couplé à un compresseur d'air permettant un fonctionnement autonome.
- La figure 10. représente schématiquement un moteur à chambre active selon l'invention couplé à un compresseur alimentant le réservoir de stockage et la capacité de travail.
- La figure 11 représente schématiquement un moteur à chambre active selon l'invention comportant deux étages de détente.
- La figure 12 représente schématiquement un moteur à chambre active selon l'invention en mode mono énergie à carburant fossile.
- Figure 1 schematically shows an active chamber engine seen in cross section, and its HP air supply device.
- Figures 2 to 4 show in schematic views, in cross section, the various phases of operation of the engine according to the invention.
- Figure 5 shows a comparative curve of the kinematics of the load piston and engine piston strokes.
- FIG. 6 represents a graph of the thermodynamic cycle in mono-energy compressed air mode.
- FIG. 7 schematically represents an active chamber engine seen in cross section and its HP air supply device comprising a device for heating the air by combustion.
- FIG. 8 represents a graph of the thermodynamic cycle in dual energy compressed air and additional energy mode.
- FIG. 9 shows, schematically, an active chamber motor according to the invention coupled to an air compressor allowing autonomous operation.
- Figure 10 shows schematically an active chamber motor according to the invention coupled to a compressor supplying the storage tank and the working capacity.
- FIG. 11 schematically represents an active chamber motor according to the invention comprising two expansion stages.
- FIG. 12 schematically represents an active-chamber motor according to the invention in single-energy mode with fossil fuel.
La figure 1 représente un moteur à chambre active selon l'invention où l'on peut voir le cylindre moteur dans lequel coulisse le piston 1 (représenté à son point mort haut), coulissant dans un cylindre 2, qui est commandé par un levier à pression. Le piston 1 est relié par son axe à l'extrémité libre 1A d'un levier à pression constitué d'un bras 3 articulé sur un axe commun 5 à un autre bras 4 fixé oscillant, sur un axe immobile 6. Sur l'axe commun 5 aux deux bras 3 et 4 est attachée une bielle 7 de commande reliée au maneton 8 d'un vilebrequin 9 tournant sur son axe 10. Lors de la rotation du vilebrequin, la bielle de commande 7 exerce un effort sur l'axe commun 5 des deux bras 3 et 4 du levier à pression, permettant ainsi le déplacement du piston 1 suivant l'axe du cylindre 2, et transmet en retour au vilebrequin 9 les efforts exercés sur le piston 1 lors du temps moteur provoquant ainsi sa rotation. Le cylindre moteur est en communication par un passage 12 dans sa partie haute avec le cylindre de chambre active 13 dans lequel coulisse un piston 14 dit piston de charge relié par une bielle 15 à un maneton 16 du vilebrequin 9. Un conduit d'admission 17 commandé par une soupape 18 débouche dans le passage 12 reliant le cylindre moteur 2 et le cylindre de chambre active 13 et permet d'alimenter le moteur en air comprimé provenant de la chambre de travail 19 maintenu à la pression de travail elle-même alimentée en air comprimé à travers un conduit 20 commandé par un détendeur dynamique 21 par le réservoir de stockage haute pression 22. Dans la partie supérieure du cylindre 2 est ménagé un conduit d'échappement 23 commandé par une soupape d'échappement 24.FIG. 1 represents an active chamber motor according to the invention, in which the engine cylinder in which the piston 1 (shown at its top dead center) slides in a
Un dispositif commandé par la pédale d'accélérateur commande le détendeur dynamique 21 pour permettre de réguler la pression dans la chambre de travail et piloter ainsi le moteur.A device controlled by the accelerator pedal controls the
La figure 2 représente schématiquement, vu en coupe transversale, le moteur à chambre active selon l'invention en cours d'admission ; le piston moteur 1 est arrêté à sa position point mort haut et la soupape d'admission 18 vient d'être ouverte, la pression de l'air contenue dans la capacité de travail 19 repousse le piston de charge 14 tout en remplissant le cylindre de la chambre active 13 et produisant un travail en provoquant par sa bielle 15 la rotation du vilebrequin 9, le travail étant considérable car effectué à pression quasi constante. En poursuivant sa rotation, le vilebrequin autorise (figure 3) le déplacement du piston moteur 1 vers son point mort bas et sensiblement simultanément la soupape d'admission 18 est alors refermée ; la charge contenue dans la chambre active se détend en repoussant le piston moteur 1 qui produit à son tour un travail en provoquant la rotation du vilebrequin 9 au travers de son équipage mobile constitué par les bras 3 et 4 et la bielle de commande 7. Durant ce cycle du piston moteur 1 le piston de charge poursuit sa course vers le point mort bas puis commence sa remontée vers son point mort haut, l'ensemble des éléments étant calé de telle sorte que durant leur course ascendante (figure 4) les pistons arrivent sensiblement ensemble à leur point mort haut où le piston moteur va s'arrêter et le piston de charge recommencer le cycle. Lors de la course ascendante des deux pistons la soupape d'échappement 24 est ouverte afin d'évacuer l'air comprimé détendu à travers le conduit d'échappement 23.2 shows schematically, seen in cross section, the active chamber motor according to the invention being admitted; the
La figure 5 représente l'allure des courbes comparatives des courses des pistons où l'on peut voir en abscisse la rotation du vilebrequin et en ordonnée le déplacement des pistons, de charge et moteur, de leur point mort haut à leur point mort bas et retour où, selon l'invention, la course du piston de charge est plus grande que celle du piston moteur. Le graphique est divisé en 4 phases principales. Lors de la phase A, le piston moteur est maintenu à son point mort haut et le piston de charge effectue la majeure partie de sa course descendante en produisant un travail puis en Phase B le piston moteur effectue sa course descendante de détente en produisant un travail alors que le piston de charge termine sa course descendante produisant également un travail. Alors que le piston de charge atteint son point mort bas, phase C, le piston moteur poursuit sa course descendante et le piston de charge commence sa course ascendante. Il est à noter que le piston de charge subit durant cette phase un travail négatif qui, de fait, a été compensé par un surcroît de travail positif lors de la phase B. En phase D les deux pistons rejoignent leur point mort haut quasi simultanément pour recommencer un nouveau cycle. Durant les phases A, B, C le moteur produit un travail.FIG. 5 shows the shape of the comparative curves of the piston strokes where the rotation of the crankshaft can be seen on the abscissa and the displacement of the pistons, the load and the engine, from their top dead center to their bottom dead point, and return where, according to the invention, the stroke of the load piston is greater than that of the engine piston. The graph is divided into 4 main phases. During phase A, the engine piston is kept at its top dead center and the load piston performs most of its downward stroke producing a job and then in Phase B the engine piston performs its descending downward stroke producing a job. while the load piston finishes its downward stroke also producing a job. As the load piston reaches its bottom dead point, phase C, the engine piston continues its downward stroke and the load piston begins its upward stroke. It should be noted that the load piston undergoes during this phase a negative work which, in fact, has been compensated by a surplus of positive work during phase B. In phase D the two pistons reach their top dead center almost simultaneously for start a new cycle. During phases A, B, C the engine produces a job.
La figure 6 représente le graphique du cycle thermodynamique en mode mono énergie air comprimé où l'on peut voir les différentes phases du cycle dans les différentes capacités (en abscisse) constituant le moteur à chambre active selon l'invention, les pressions étant en ordonnée ; dans la première capacité qui est le réservoir de stockage on voit un réseau de courbes isothermes allant de la pression de stockage Pst à la pression initiale de travail PIT, la pression de stockage diminuant au fur et à mesure de la vidange du réservoir alors que la pression PIT sera contrôlée en fonction du couplé recherché entre une pression minimale de fonctionnement et une pression maximale de fonctionnement ici, pour l'exemple, entre 10 et 30 bar. Dans la capacité de travail durant la charge de la chambre active, la pression reste quasi identique. Dès l'ouverture de la soupape d'admission, l'air comprimé contenu dans la capacité de travail est transféré dans la chambre active produisant un travail accompagné d'une très légère diminution de pression par exemple, pour une capacité de travail de 3000 cm3 et une chambre active de 35 cm3, la chute de pression est de 1,16% soit et, toujours pour l'exemple, une pression réelle de travail de 29,65 bar pour une pression initiale de travail de 30 bar. Puis, le piston moteur commence sa course descendante avec une détente polytropique qui produit un travail avec abaissement de la pression jusqu'à l'ouverture de la soupape d'échappement (par exemple aux environs de 2 bar) suivi au retour à la pression atmosphérique durant le temps échappement, pour recommencer un nouveau cycle.FIG. 6 represents the graph of the thermodynamic cycle in mono-energy compressed air mode, in which the different phases of the cycle can be seen in the different capacities (on the abscissa) constituting the active-chamber motor according to the invention, the pressures being in the ordinate ; in the first capacity, which is the storage tank, we see a network of isothermal curves ranging from the storage pressure Pst to the initial working pressure PIT, the storage pressure decreasing as the tank is emptied while the PIT pressure will be controlled depending on the desired coupling between a minimum operating pressure and a maximum operating pressure here, for example, between 10 and 30 bar. In the working capacity during the charging of the active chamber, the pressure remains almost identical. As soon as the intake valve opens, the compressed air contained in the working capacity is transferred to the active chamber producing a job accompanied by a very slight pressure decrease, for example, for a working capacity of 3000 cm3. and an active chamber of 35 cm3, the pressure drop is 1.16% and, still for the example, a real working pressure of 29.65 bar for an initial working pressure of 30 bar. Then, the engine piston starts its downward stroke with a polytropic expansion which produces a work with lowering of the pressure until the opening of the exhaust valve (for example around 2 bar) followed by the return to atmospheric pressure. during the escape time, to start a new cycle again.
La figure 7 représente le moteur et son ensemble en version bi-énergie avec énergie additionnelle ou l'on peut voir dans la capacité de travail 19 un dispositif schématique de réchauffage de l'air comprimé avec apport d'énergie additionnelle ici, un brûleur 25 alimenté par une bouteille de gaz 26. La combustion représentée sur cette figure est donc une combustion externe-interne et permet d'augmenter considérablement le volume et/ou la pression de l'air comprimé en provenance du réservoir de stockage.FIG. 7 shows the engine and its assembly in a bi-energy version with additional energy or it can be seen in the working capacity 19 a schematic device for heating the compressed air with additional energy input here, a
La figure 8 représente un graphique du cycle thermodynamique en mode bi énergie air comprimé et énergie additionnelle où l'on peut voir les différentes phases du cycle dans les différentes capacités constituant le moteur à chambre active selon l'invention en ordonnée les pressions dans la première capacité qui est le réservoir de stockage on voit un réseau de courbes isothermes allant de la pression de stockage Pst à la pression initiale de travail PIT, la pression de stockage diminuant au fur et à mesure de la vidange du réservoir alors que la pression PIT sera contrôlée en fonction du couple recherché entre une pression minimum de fonctionnement et une pression maximale de fonctionnement ici pour l'exemple entre 10 et 30 bar. Dans la capacité de travail, le réchauffage de l'air comprimé permet d'augmenter considérablement la pression de la pression initiale PIT à la pression finale de travail PFT : par exemple pour une PIT de 30 bar une augmentation de température de l'ordre de 300 degrés permet d'obtenir une PFT de l'ordre de 60 bar. Dès l'ouverture de la soupape d'admission, l'air comprimé contenu dans la capacité de travail est transféré dans la chambre active, produisant un travail, accompagné d'une très légère diminution de pression : par exemple pour une capacité de travail de 3000 cm3 et une chambre active de 35 cm3 la chute de pression est de 1,16% soit et toujours pour l'exemple, une pression réelle de travail de 59,30 bars pour une pression initiale de travail de 60 bars ; puis le piston moteur commence sa course descendante avec une détente polytropique qui produit un travail avec abaissement de la pression jusqu'à l'ouverture de la soupape d'échappement (par exemple aux environs de 4 bars) suivi au retour à la pression atmosphérique durant le temps échappement, pour recommencer un nouveau cycle.FIG. 8 represents a graph of the thermodynamic cycle in dual energy compressed air and additional energy mode, in which the different phases of the cycle can be seen in the different capacities constituting the active-chamber motor according to the invention, in the ordinate the pressures in the first capacity which is the storage tank we see a network of isothermal curves ranging from the storage pressure Pst to the initial working pressure PIT, the storage pressure decreasing as the tank empties while the pressure PIT will be controlled according to the desired torque between a minimum operating pressure and a maximum operating pressure here for the example between 10 and 30 bar. In the working capacity, the reheating of the compressed air makes it possible to considerably increase the pressure from the initial pressure PIT to the final working pressure PFT: for example for a PIT of 30 bar a temperature increase of the order of 300 degrees makes it possible to obtain a PFT of the order of 60 bar. As soon as the inlet valve opens, the compressed air contained in the working capacity is transferred into the active chamber, producing a job, accompanied by a very slight pressure decrease: for example for a working capacity of 3000 cm3 and an active chamber of 35 cm3 the pressure drop is 1.16% is and still for the example, a real working pressure of 59.30 bars for an initial working pressure of 60 bars; then the engine piston starts its downward stroke with a polytropic expansion that produces a work with lowering of the pressure until the opening of the exhaust valve (for example around 4 bars) followed by the return to atmospheric pressure during the exhaust time, to start a new cycle.
Le moteur à chambre active fonctionne également en bi-énergie d'une manière autonome avec l'énergie dite additionnelle fossile, (ou autre) (figure 9) lorsque, selon une variante de l'invention, il entraîne un compresseur d'air comprimé 27 qui alimente le réservoir de stockage 22. Le fonctionnement général de la machine est le même que celui décrit précédemment sur les figures 1 à 4. Toutefois, cette disposition permet de remplir le réservoir de stockage en cours de fonctionnement avec énergie additionnelle mais occasionne une perte d'énergie relativement importante due au compresseur. Selon une autre variante de l'invention, (non représentée sur les dessins), le compresseur d'air alimente directement la capacité de travail ; dans ce cas de fonctionnement, le détendeur dynamique 21 est maintenu fermé et le compresseur alimente en air comprimé la capacité de travail dans laquelle ce dernier est réchauffé par le dispositif de réchauffe et augmente de pression et/ou de volume pour alimenter la chambre active 13 comme décrit dans les cas précédents. Toujours dans ce cas de fonctionnement, le pilotage du moteur est effectué par la régulation de pression directement par le compresseur et la perte d'énergie due au compresseur est bien moindre que dans le cas précédent. Enfin et selon une autre variante de l'invention (figure 10) le compresseur alimente simultanément ou successivement en fonction des besoins énergétiques le réservoir de stockage haute pression 22 et la capacité de travail 19. Une vanne bidirectionnelle 28 permet d'alimenter soit le réservoir de stockage 22 soit la capacité de travail 19 ou encore les deux simultanément. Le choix est alors fonction des besoins énergétiques du moteur en regard des besoins énergétiques du compresseur : si la demande sur le moteur est relativement faible, le réservoir haute pression est alors alimenté; si les besoins énergétiques du moteur sont élevés, seule la capacité de travail est alors alimentée.The active chamber motor also operates in dual-energy mode autonomously with the so-called additional fossil energy (or other) (FIG. 9) when, according to a variant of the invention, it drives a compressed air compressor. 27 which feeds the
La figure 11 représente schématiquement un moteur à chambre active selon l'invention comportant deux étages de détente où l'on peut voir le réservoir de stockage d'air comprimé haute pression 22 le détendeur dynamique 21 la capacité de travail 19 ainsi que le premier étage comportant un cylindre moteur 2 dans lequel coulisse le piston 1 (représenté à son point mort haut), qui est commandé par un levier à pression. Le piston 1 est relié par son axe à l'extrémité libre 1A d'un levier à pression constitué d'un bras 3 articulé sur un axe commun 5 à un autre bras 4 fixé oscillant, sur un axe immobile 6. Sur l'axe commun 5 aux deux bras 3 et 4 est attachée une bielle 7 de commande reliée au maneton 8 d'un vilebrequin 9 tournant sur son axe 10. Lors de la rotation du vilebrequin la bielle de commande 7 exerce un effort sur l'axe commun 5 des deux bras 3 et 4 du levier à pression, permettant ainsi le déplacement du piston 1 suivant l'axe du cylindre 2, et transmet en retour au vilebrequin 9 les efforts exercés sur le piston 1 lors du temps moteur provoquant ainsi sa rotation. Le cylindre moteur est en communication par un passage 12 dans sa partie haute avec le cylindre de chambre active 13 dans lequel coulisse un piston 14 dit piston de charge relié par une bielle 15 à un maneton 16 du vilebrequin 9. Un conduit d'admission 17 commandé par une soupape 18 débouche dans le passage 12 reliant le cylindre moteur 2 et le cylindre de chambre active 13 et permet d'alimenter le moteur en air comprimé provenant de la chambre de travail 19 maintenu à la pression de travail et elle-même alimentée en air comprimé par un conduit 20 commandé par un détendeur dynamique 21. Le conduit d'échappement 23 est relié à travers un échangeur 29 à l'admission 17B du deuxième étage du moteur comportant un cylindre moteur 2B dans lequel coulisse le piston 1B qui est commandé par un levier à pression. Le piston 1B est relié par son axe à l'extrémité libre 1C d'un levier à pression constitué d'un bras 3B articulé sur un axe commun 5B à un autre bras 4B fixé oscillant, sur un axe immobile 6B. Sur l'axe commun 5B aux deux bras 3B et 4B est attachée une bielle de commande 7B reliée au maneton 8B d'un vilebrequin 9 tournant sur son axe 10. Lors de la rotation du vilebrequin la bielle de commande 7B exerce un effort sur l'axe commun 5B des deux bras 3B et 4B du levier à pression, permettant ainsi le déplacement du piston 1B suivant l'axe du cylindre 2B, et transmet en retour au vilebrequin 9 les efforts exercés sur le piston 1B lors du temps moteur provoquant ainsi sa rotation. Le cylindre moteur est en communication par un passage 12B dans sa partie haute avec le cylindre de chambre active 13B dans lequel coulisse un piston 14B dit piston de charge relié par une bielle 15B à un maneton 16B du vilebrequin 9. Un conduit d'admission 17B commandé par une soupape 18B débouche dans le passage 12B reliant le cylindre moteur 2B et le cylindre de chambre active 13B et permet d'alimenter le moteur en air comprimé. Pour des raisons de simplification du dessin, le deuxième étage est représenté à côté du premier étage. Il va sans dire que préférentiellement il est utilisé un seul vilebrequin et que le deuxième étage est sur le même plan longitudinal que le premier étage. Le conduit d'échappement 23 du premier étage moteur est relié à travers un échangeur air-air 29 au conduit d'admission 17B du deuxième étage moteur. Dans ce type de configuration, le premier étage sera dimensionné de telle sorte qu'en fin de détente moteur, l'air de l'échappement possède une pression résiduelle pour permettre, après son réchauffement dans l'échangeur air air, où il va augmenter de pression et/ou de volume, d'avoir une énergie suffisante pour assurer correctement le fonctionnement de l'étage suivant.FIG. 11 schematically represents an active chamber motor according to the invention comprising two stages of relaxation where the storage tank can be seen the high-pressure compressed
La figure 12 montre un moteur à chambre active monoénergie fonctionnant avec un carburant fossile, le moteur est couplé à un compresseur 27 qui alimente en air comprimé la capacité de travail 19 qui comprend ici un brûleur 25 alimenté en énergie par une bouteille de gaz 26. Le fonctionnement général de la machine est le même que celui décrit précédemment.FIG. 12 shows a monoenergy active chamber engine operating with a fossil fuel, the engine is coupled to a
Le moteur à chambre active est décrit avec un fonctionnement avec de l'air comprimé. Toutefois, il peut utiliser n'importe quel gaz comprimé sans pour autant changer l'invention décrite.The active chamber motor is described with operation with compressed air. However, it can use any compressed gas without changing the described invention.
L'invention n'est pas limitée aux exemples de réalisations décrits et représentés mais est limitée seulement par les revendications ci-jointes.The invention is not limited to the embodiments described and shown but is limited only by the appended claims.
Claims (20)
- - Active chamber engine comprising at least one engine piston (1) sliding in a cylinder (2) controlled by a device for stopping the piston at top dead centre and supplied with compressed air or any other gas at high pressure contained in a storage reservoir (22) which is reduced to an average pressure called the working pressure in a work capacity (19) preferably through a dynamic pressure reducing valve characterized:- In that the expansion chamber consists of a variable volume fitted with the means to produce work and that is joined to and in permanent contact with the space contained above the engine piston (1) by means of a permanent passage (12),- In that when the piston (1) is stopped at top dead centre, the air or gas under pressure is admitted into the expansion chamber when it is at its smallest volume and, under the thrust of this air under pressure, it increases its volume by producing work,- In that the expansion chamber being maintained at very nearly its maximum volume, the compressed air contained within then expands into the engine cylinder (2) thus pushing the engine piston (1) downwards along its travel by in turn supplying work,- In that during the upwards travel of the engine piston (1) during the exhaust stroke, the variable volume in the expansion chamber is returned to its smallest volume to restart the complete work cycle.
- - Active chamber engine according to claim 1 characterized in that the work cycle of the active chamber with regard to the cycle of the engine piston comprises three phases such that:- When the engine piston is stopped at top dead centre: admission of a charge into the active chamber producing work by increasing its volume,- During the expansion travel of the engine piston: maintenance at a predetermined volume which is the actual volume of the expansion chamber,- During the exhaust stroke of the engine piston: repositioning of the active chamber to its minimum volume to enable the cycle to be renewed.
- - Active chamber engine according to claims 1 and 2 for which the operating thermodynamic cycle in compressed air mono-energy mode is characterized by an isothermal expansion without work with conservation of energy, carried out between the high pressure compressed air storage reservoir and the work capacity, followed by a transfer accompanied by a very slight expansion in the pressure cylinder known as quasi-isothermal with work, then a polytropic expansion with work in the engine cylinder and lastly an exhaust at atmospheric pressure i.e. four phases as follows:- An isothermal expansion without work,- A transfer - slight expansion with work known as quasi-isothermal,- A polytropic expansion with work,- An exhaust at ambient pressure.
- - Active chamber engine according to claims 1 to 3 characterized in that the work capacity (19) comprises a device (25,26) for heating the compressed air with a supplementary energy provided by fossil or other fuel, the said device increasing the temperature and/or pressure of the air passing through it.
- - Active chamber engine according to claim 4 characterized in that the compressed air is heated by the combustion of fossil or biological fuel directly in the compressed air, the engine then being said to be of the external internal combustion type.
- - Active chamber engine according to claim 4 characterized in that the compressed air contained in the work capacity is heated by the combustion of fossil or biological fuel in a heat exchanger, the flame not coming into direct contact with the compressed air, the engine then being said to be of the external-external combustion type.
- - Active chamber engine according to any of claims 4 to 6 characterized in that the thermal heater uses a thermochemical gas solid reaction process based on the transformation by evaporation of a reagent fluid contained in an evaporator, for example liquid ammonium or a gas which reacts with a solid reagent contained in a reactor, for example salts such as calcium, magnesium or barium chlorides or others whose chemical reaction produces heat and which, when the reaction has finished can be regenerated by heating the reactor which cases the desorption of the gaseous ammonium which recompenses in the evaporator.
- - Active chamber engine according to any of claims 4 to 7 whose thermodynamic cycle when working in bi-energy mode with supplementary energy is characterized by an isothermal expansion without work with conservation of energy carried out in the work capacity by an increase in temperature by the heating of the air by a fossil energy followed by a very slight expansion known as quasi-isothermal with work, a polytropic expansion with work in the engine cylinder and lastly an exhaust at atmospheric pressure representing 5 successive phases as follows:- An isothermal expansion,- An increase in temperature,- A transfer - slight expansion with work known as quasi-isothermal,- A polytropic expansion with work,- An exhaust at ambient pressure.
- - Active chamber engine according to any of the claims above characterized in that the torque and the speed of the engine are controlled by controlling the pressure in the work capacity (19).
- - Active chamber engine according to any of the claims above characterized in that during operation in bi-energy mode with supplementary energy, an electronic calculator controls the quantity of energy used according to the pressure of the compressed air therefore the mass of the air introduced into the said work capacity.
- - Active chamber engine according to any of the claims above characterized in that the volume of the active chamber is made up of a piston (14) called the pressure piston sliding in a cylinder (13) and connected by a connecting rod (15) to the crank of the engine (9) according to a classic drive sequence.
- - Active chamber engine according to claim 11 characterized in that the travel of the pressure piston (14) is determined such that when the volume chosen as volume of the chamber has been reached and during the downward travel of the engine piston (1), the pressure piston (14) finishes its downward travel and starts its upward travel so as to reach its top dead centre approximately at the same time as the engine piston reaches its top dead centre.
- - Active chamber engine according to any of the claims above characterized in that to enable autonomous operation of the engine during its use with supplementary energy and/or when the compressed air storage reservoir (22) is empty, the active chamber engine according to the invention is connected to an air compressor (27) to supply compressed air to the high pressure compressed air storage reservoir (22).
- - Active chamber engine according to claim 13 above characterized in that the air compressor (27) directly supplies the work capacity (19). In this case, the engine is controlled by controlling the pressure of the compressor (27) and the dynamic pressure reducing valve (21) between the high pressure storage reservoir and the work capacity remains blocked off.
- - Active chamber engine according to claims 13 and 14 characterized in that the coupled air compressor (27) supplies simultaneously or successively in combination the storage reservoir (22) and the work capacity (19).
- - Active chamber engine according to any of the claims above characterized by a mono-energy operation with a fossil fuel (or other), the work capacity (19) being supplied only by the coupled air compressor (27), the high pressure compressed air storage reservoir being purely and simply omitted.
- - Active chamber engine according to claim 6 and any one of claims 13 to 16 characterized in that the exhaust after expansion is recalculated to the inlet of the coupled air compressor.
- - Active chamber engine according to any of the claims above working in compressed air mono-energy mode characterized in that the engine is comprised of several expansion stages of increasing cylinder sizes each stage comprising an active chamber according to the invention and in that, between each stage a heat exchanger (29) is positioned to heat the exhaust air from the previous stage.
- - Active chamber engine according to claim 18 operating in bi-energy mode characterized in that the heat exchanger positioned between each stage is fitted with a heating device running on supplementary energy.
- - Active chamber engine according to claims 18 and 19 characterized in that the heat exchangers and the heating device are combined together or separately in a multiple stage device using the same energy source.
Priority Applications (3)
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PL04805466T PL1702137T3 (en) | 2003-11-17 | 2004-11-17 | Engine with an active mono-energy and/or bi-energy chamber with compressed air and/or additional energy and thermodynamic cycle thereof |
SI200430546T SI1702137T1 (en) | 2003-11-17 | 2004-11-17 | Engine with an active mono-energy and/or bi-energy chamber with compressed air and/or additional energy and thermodynamic cycle thereof |
CY20071101531T CY1108097T1 (en) | 2003-11-17 | 2007-12-03 | SINGLE OR DOUBLE POWER ENGINE ENGINE WITH COMPRESSED AIR Ή / AND ADDITIONAL POWER AND THERMAL CYCLE |
Applications Claiming Priority (2)
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FR0313401A FR2862349B1 (en) | 2003-11-17 | 2003-11-17 | ACTIVE MONO AND / OR ENERGY-STAR ENGINE WITH COMPRESSED AIR AND / OR ADDITIONAL ENERGY AND ITS THERMODYNAMIC CYCLE |
PCT/FR2004/002929 WO2005049968A1 (en) | 2003-11-17 | 2004-11-17 | Engine with an active mono-energy and/or bi-energy chamber with compressed air and/or additional energy and thermodynamic cycle thereof |
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EP1702137A1 EP1702137A1 (en) | 2006-09-20 |
EP1702137B1 true EP1702137B1 (en) | 2007-09-19 |
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EP (1) | EP1702137B1 (en) |
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FR (1) | FR2862349B1 (en) |
GE (1) | GEP20084479B (en) |
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