FR2801643A1 - Liquid gas expansion system e.g. for engine powered by LPG - Google Patents
Liquid gas expansion system e.g. for engine powered by LPG Download PDFInfo
- Publication number
- FR2801643A1 FR2801643A1 FR9915010A FR9915010A FR2801643A1 FR 2801643 A1 FR2801643 A1 FR 2801643A1 FR 9915010 A FR9915010 A FR 9915010A FR 9915010 A FR9915010 A FR 9915010A FR 2801643 A1 FR2801643 A1 FR 2801643A1
- Authority
- FR
- France
- Prior art keywords
- gas
- tube
- vaporization
- inlet
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/06—Apparatus for de-liquefying, e.g. by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
La présente invention a pour objet un dispositif de détente gaz liquéfié à élément de vaporisation séparé. The present invention relates to a liquefied gas expansion device with separate vaporization element.
Il a pour but de permettre l'alimentation au moyen de gaz pétrole liquéfié (G.P.L.) de moteurs à explosion recevant normalement un carburant liquide. II peut convenir à tous les types de moteurs à combustion internes, et est en particulier destiné aux moteurs de bateaux. Its purpose is to allow the supply by means of liquefied petroleum gas (LPG) of combustion engines normally receiving a liquid fuel. It may be suitable for all types of internal combustion engines, and is particularly intended for boat engines.
Le gaz de pétrole liquéfié est de plus en plus utilisé comme source d'énergie pour les véhicules à moteurs. Ce carburant présente en effet des avantages très intéressants, en tête desquels il faut citer une très faible pollution et une taxation avantageuse pratiquée par de nombreux pays et permettant une diminution sensible du prix de revient kilométrique. Liquefied petroleum gas is increasingly used as a source of energy for motor vehicles. This fuel has indeed very interesting advantages, in front of which we must mention a very low pollution and an advantageous taxation practiced by many countries and allowing a significant reduction in the cost price per kilometer.
L'emploi de gaz liquéfié pour faire fonctionner un moteur initialement conçu pour recevoir un carburant liquide nécessite l'utilisation d'un dispositif spécifique assurant la vaporisation du gaz sous une pression et avec débit déterminés. The use of liquefied gas to operate an engine originally designed to receive a liquid fuel requires the use of a specific device for vaporizing the gas under pressure and with a given flow rate.
Ce dispositif se présente habituellement sous la forme d'un boîtier, généralement réalisé en fonte de métal léger tel que l'aluminium, et comportant une double enceinte formée d'une chambre de vaporisation du gaz et d'une chambre thermique dans laquelle circule un liquide chaud qui est le plus souvent constitue par l'eau de refroidissement du moteur prélevée grâce à une dérivation pratiquée le circuit reliant celui-ci au radiateur, ou à la tuyauterie d'évacuation dans le de moteurs marins refroidis à l'eau de mer. Les deux chambres ont une paroi commune agencée pour permettre la transmission des calories. This device is usually in the form of a housing, generally made of light metal cast iron such as aluminum, and having a double chamber formed of a gas vaporization chamber and a thermal chamber in which a hot liquid which is most often constituted by the cooling water of the engine taken through a bypass practiced the circuit connecting it to the radiator, or to the discharge piping in the marine engines cooled with seawater Both chambers have a common wall arranged to allow the transmission of calories.
La chambre de vaporisation joue également le rôle de régulateur de pression et comporte à cet effet une valve généralement actionnée une membrane interne. The vaporization chamber also acts as a pressure regulator and comprises for this purpose a valve that is generally actuated by an internal membrane.
La conception de ce système entraîne un certain nombre d'inconvénients. En raison du fait que le transfert de chaleur s'effectue à travers la paroi commune aux deux chambres, et que les autres parois de la chambre de vaporisation communiquent avec l'extérieur, il se produit d'importantes pertes de calories et pour obtenir une vaporisation correcte du gaz liquéfié, les constructeurs sont amenés à prévoir des parois de séparation en forme de labyrinthe pour augmenter la surface commune, ce qui entraîne évidemment des coûts de fabrication élevés. Malgré ces dispositions, il est nécessaire dans certains cas de prévoir un moyen de chauffage complémentaire, par exemple une résistance électrique comme le décrit le brevet N FR 2 759 419, ou une enceinte étanche externe pourvue d'un élément d'apport calorifique et reliée à la chambre thermique du boîtier de vaporisation par une double canalisation en circuit fermé comme dans laquelle circule un fluide assurant le transfert vers le vaporisateur des calories produites dans l'enceinte chauffée, ce dispositif faisant l'objet de la demande de brevet N FR 98 08 110. The design of this system entails a number of disadvantages. Due to the fact that the heat transfer is effected through the wall common to both chambers, and that the other walls of the vaporization chamber communicate with the outside, there are significant losses of calories and to obtain Proper vaporization of liquefied gas, manufacturers are expected to provide labyrinth-shaped partition walls to increase the common area, which obviously leads to high manufacturing costs. Despite these provisions, it is necessary in certain cases to provide a complementary heating means, for example an electrical resistance as described in patent N FR 2 759 419, or an external sealed enclosure provided with a heating element and connected to the thermal chamber of the vaporization box by a double pipe in closed circuit as in which circulates a fluid ensuring the transfer to the vaporizer of the calories produced in the heated enclosure, this device being the subject of the patent application N FR 98 08 110.
En outre, les appareils existants ne permettent pas l'alimentation de moteurs de forte puissance et il faut dans ce cas prévoir plusieurs vapo détendeurs pour un seul moteur. In addition, the existing devices do not allow the power of high power engines and it is necessary in this case to provide several vapor pressure regulators for a single engine.
Le dispositif selon la présente invention a pour objectif remédier à ces inconvénients. II est en effet aisément adaptable à tous les types toutes les tailles de moteurs, et permet une importante diminution des coûts fabrication grâce à la simplicité de sa conception, tout en assurant un excellent échange thermique entre le gaz à vaporiser et le fluide de chauffage. The purpose of the device according to the present invention is to overcome these disadvantages. It is indeed easily adaptable to all types of all engine sizes, and allows a significant reduction in manufacturing costs thanks to the simplicity of its design, while ensuring excellent heat exchange between the gas to be vaporized and the heating fluid.
II est formé de deux parties indépendantes reliées une simple tubulure, un élément de régulation du débit et de la pression du gaz vaporisé, raccordé au moteur, et un élément de vaporisation consistant en un échangeur thermique constitué d'un tube en matériau conducteur de la chaleur dans lequel passe le gaz, liquide à l'entrée raccordée au réservoir d'alimentation et gazeux à la sortie, ce tube étant immergé dans le liquide de réchauffement lui-même contenu dans une enceinte réalisée de préférence en matériau isolant. Sur les dessins schématiques annexés, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention: la figure 1 montre l'ensemble élément de vaporisation et élement de régulation, les figures 2 et 3 présentent en coupe, à une échelle differente, respectivement l'élément de vaporisation et l'élément de régulation de la figure 1 et les figures 4 et 5 montrent, également en coupe, des variantes de l'élément de vaporisation. It is formed of two independent parts connected to a single pipe, an element for regulating the flow rate and the pressure of vaporized gas, connected to the engine, and a vaporization element consisting of a heat exchanger consisting of a tube of conductive material of the heat in which the gas passes, liquid at the inlet connected to the feed tank and gaseous at the outlet, this tube being immersed in the warming liquid itself contained in a chamber preferably made of insulating material. In the accompanying schematic drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention: FIG. 1 shows the vaporization element assembly and regulation element, FIGS. 2 and 3 are shown in section, on a different scale, respectively the vaporization element and the regulating element of Figure 1 and Figures 4 and 5 show, also in section, variants of the vaporization element.
Le dispositif, figures 1 à 5, est constitué d'un élément de vaporisation 1 et d'un élément de régulation 2 de la pression et du débit, ces deux éléments étant indépendants et reliés par une tubulure 3 qui peut être un tube souple. The device, Figures 1 to 5, consists of a vaporizing element 1 and a regulating element 2 of the pressure and flow, these two elements being independent and connected by a pipe 3 which may be a flexible tube.
L'élément de régulation 2 est conforme aux dispositifs habituellement intégrés dans les vapo-détendeurs courants, mais est dépourvu de chambre thermique. II comporte essentiellement une membrane souple 4 prise entre fond 5 et le couvercle 6 d'un boîtier et agissant sur un clapet 7 disposé sur l'arrivée 8 du gaz provenant de l'élément de vaporisation 1. L'élément de régulation 2 pourra être équipé des accessoires (non représentés) montés sur les appareils connus, tels que vanne de ralenti ou chambres multiples à pressions différentes. The regulating element 2 conforms to the devices usually incorporated in the current pressure regulators, but has no heat chamber. It comprises essentially a flexible membrane 4 taken between bottom 5 and the cover 6 of a housing and acting on a valve 7 disposed on the inlet 8 of the gas coming from the vaporization element 1. The regulation element 2 can be equipped with accessories (not shown) mounted on known devices, such as idle valve or multiple chambers at different pressures.
L'élément de vaporisation 1 consiste en un échangeur thermique constitué d'une enceinte étanche 9 réalisée avantageusement en matériau isolant et dans laquelle circule le fluide de chauffage 10. Un tube 11, de préférence en laiton ou en bronze est immergé dans ce liquide et est raccordé d'un côté au réservoir de gaz liquéfié et de l'autre à l'élément de régulation 2. C'est dans ce tube, grâce aux calories apportées par le fluide de chauffage 10 que le gaz se vaporise. The vaporization element 1 consists of a heat exchanger consisting of a sealed chamber 9 advantageously made of insulating material and in which the heating fluid 10 circulates. A tube 11, preferably made of brass or bronze, is immersed in this liquid and is connected on one side to the liquefied gas tank and the other to the regulating element 2. It is in this tube, thanks to the calories provided by the heating medium 10 that the gas vaporizes.
Les formes et dispositions de l'enceinte étanche 9 et du tube de vaporisation 11 pourront être quelconques. The shapes and arrangements of the sealed enclosure 9 and the evaporation tube 11 may be arbitrary.
En particulier, selon une première variante d'exécution, l'élément de vaporisation 1 est constitué d'un échangeur thermique tubulaire de type connu avec tube de vaporisation 11 replié plusieurs fois sur lui-même afin de former un serpentin de longueur importante (figure 4). In particular, according to a first variant embodiment, the vaporization element 1 consists of a tubular heat exchanger of known type with a vaporization tube 11 folded several times on itself in order to form a coil of considerable length (FIG. 4).
Selon une seconde variante d'exécution, l'enceinte étanche est constituée d'un tuyau 12 de caoutchouc armé de type "durite" dans lequel passe le tube de vaporisation 11 et fermé à ses deux extrémités par des raccords coudés 13 traversés par ledit tube de vaporisation cette disposition permet d'adapter aisément les caractéristiques (longueur, diamètre, courbure) de l'élément de vaporisation à tous les cas pouvant se présenter (figure 5). According to a second alternative embodiment, the sealed enclosure consists of a hose 12 of reinforced rubber type "hose" in which passes the vaporization tube 11 and closed at both ends by elbow connectors 13 crossed by said tube Spraying this arrangement makes it easy to adapt the characteristics (length, diameter, curvature) of the vaporization element to all cases that may occur (Figure 5).
Le dispositif pourra éventuellement être équipé cordon chauffant électrique basse tension s'enroulant autour du tube de vaporisation 11. L'ensemble sera avantageusement complété par des dispositifs de sécurité couramment utilisés dans ce genre de réalisations, tels que vanne d'arrêt du gaz liquide à l'entrée de l'élément de vaporisation 1, ou système contrôle du débit de fluide de chauffage 10, ces dispositifs étant asservis à des capteurs de pression ou de température. The device may optionally be equipped with a low-voltage electric heating cord winding around the evaporation tube 11. The assembly will advantageously be supplemented by safety devices commonly used in this type of embodiment, such as a liquid gas shut-off valve. the inlet of the vaporization element 1, or control system of the flow of heating fluid 10, these devices being slaved to pressure or temperature sensors.
Grâce à sa simplicité, à sa facilité de montage et à faible coût de revient, le dispositif qui vient d'être décrit se prête particulièrement bien à la réalisation de systèmes vapo-détendeurs de gaz liquéfié de pétrole adaptables indifféremment sur tous les types de moteurs. Thanks to its simplicity, ease of assembly and low cost, the device that has just been described is particularly suitable for the realization of vapor-expansion systems liquefied petroleum gas adaptable indifferently on all types of engines .
Comme il résulte de ce qui précède, l'invention ne limite pas à la seule forme d'exécution de ce dispositif de vaporisation de gaz liquéfié décrite ci-dessus à titre d'exemple; elle en embrasse au contraire toutes les variantes de réalisation et d'application respectant les mêmes principes. As a result of the foregoing, the invention does not limit to the sole embodiment of this liquefied gas vaporizer described above as an example; on the contrary, it embraces all variants of implementation and application respecting the same principles.
Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires.The positioning of the various constituent elements gives the object of the invention a maximum of useful effects that had not been obtained so far by similar devices.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR9915010A FR2801643B1 (en) | 1999-11-29 | 1999-11-29 | LIQUEFIED GAS EXPANSION DEVICE WITH SEPARATE VAPORIZATION ELEMENT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9915010A FR2801643B1 (en) | 1999-11-29 | 1999-11-29 | LIQUEFIED GAS EXPANSION DEVICE WITH SEPARATE VAPORIZATION ELEMENT |
Publications (2)
Publication Number | Publication Date |
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FR2801643A1 true FR2801643A1 (en) | 2001-06-01 |
FR2801643B1 FR2801643B1 (en) | 2003-01-31 |
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Application Number | Title | Priority Date | Filing Date |
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FR9915010A Expired - Fee Related FR2801643B1 (en) | 1999-11-29 | 1999-11-29 | LIQUEFIED GAS EXPANSION DEVICE WITH SEPARATE VAPORIZATION ELEMENT |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002050416A1 (en) * | 2000-12-20 | 2002-06-27 | Antoine Di Gennaro | Device for expanding liquefied gas with separate vaporising element |
WO2003074860A1 (en) * | 2002-03-07 | 2003-09-12 | Jorge Gomez Marquez | Gasifier for carburation with liquid petroleum gas (lpg) |
WO2009141512A1 (en) | 2008-04-18 | 2009-11-26 | Antoine Di Gennaro | Device for bleeding gas from a vehicle liquefied petroleum gas tank to use it to start the engine |
WO2009143908A1 (en) * | 2008-05-27 | 2009-12-03 | Robert Bosch Gmbh | Fuel supply system for a gas-driven internal combustion engine |
Citations (13)
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CH552185A (en) * | 1972-05-05 | 1974-07-31 | Techfina Sa | DETACHABLE DOUBLE TUBES HEAT EXCHANGER FOR ABRASIVE AND CLOSING MEDIUM. |
DE2613175A1 (en) * | 1976-03-27 | 1977-10-06 | Maschf Augsburg Nuernberg Ag | Liq. petroleum gas vaporiser - has first heat exchanger to generate vapour and second heat exchanger to adjust vapour temp. |
FR2422832A1 (en) * | 1978-04-10 | 1979-11-09 | Elf Antargaz | Automobile engine running on butane - has alternative vaporisers heated by electricity, and cooling water and is thermostatically controlled |
EP0026017A1 (en) * | 1979-09-20 | 1981-04-01 | Officine Lovato S.P.A. | Two-stage pressure reduction device for liquefied-gas engines provided with an automatic starting system |
US4492208A (en) * | 1983-07-01 | 1985-01-08 | Mcgraw-Edison Company | Liquid propane gas fuel system |
DE3612994A1 (en) * | 1986-04-17 | 1987-10-29 | Hi Tec Gas International Gmbh | DOSING DEVICE FOR GAS-SHAPED FUEL |
US4875439A (en) * | 1987-01-09 | 1989-10-24 | Brunswick Corporation | Marine propulsion system with fuel line cooler |
EP0611588A1 (en) * | 1993-02-19 | 1994-08-24 | Yorkshire Process Plant Limited | Method for heating a sugar solution |
EP0685639A2 (en) * | 1994-06-03 | 1995-12-06 | CENTRO RICERCHE FIAT Società Consortile per Azioni | Electronically controlled pressure regulator device for internal combustion engines supplied with a gaseous fuel, particularly methane |
WO1997047872A1 (en) * | 1996-06-07 | 1997-12-18 | William Michael Lynch | Gaseous fuel injection system |
FR2757217A1 (en) * | 1996-12-17 | 1998-06-19 | Gennaro Antoine Di | LPG feed system for marine petrol engine cooled by sea water |
EP0852348A1 (en) * | 1997-01-03 | 1998-07-08 | Renault | Thermostat, in particular for mounting downstream of an exchanger and upstream of a natural gas powered engine |
EP1016782A1 (en) * | 1998-12-30 | 2000-07-05 | POLIAUTO Ing. Pietro Parietti & C. S. n. c. | Apparatus for feeding liquid petroleum gas to internal combustion engines, comprising an isobaric vaporiser and a pressure reducer downstream of it |
-
1999
- 1999-11-29 FR FR9915010A patent/FR2801643B1/en not_active Expired - Fee Related
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH552185A (en) * | 1972-05-05 | 1974-07-31 | Techfina Sa | DETACHABLE DOUBLE TUBES HEAT EXCHANGER FOR ABRASIVE AND CLOSING MEDIUM. |
DE2613175A1 (en) * | 1976-03-27 | 1977-10-06 | Maschf Augsburg Nuernberg Ag | Liq. petroleum gas vaporiser - has first heat exchanger to generate vapour and second heat exchanger to adjust vapour temp. |
FR2422832A1 (en) * | 1978-04-10 | 1979-11-09 | Elf Antargaz | Automobile engine running on butane - has alternative vaporisers heated by electricity, and cooling water and is thermostatically controlled |
EP0026017A1 (en) * | 1979-09-20 | 1981-04-01 | Officine Lovato S.P.A. | Two-stage pressure reduction device for liquefied-gas engines provided with an automatic starting system |
US4492208A (en) * | 1983-07-01 | 1985-01-08 | Mcgraw-Edison Company | Liquid propane gas fuel system |
DE3612994A1 (en) * | 1986-04-17 | 1987-10-29 | Hi Tec Gas International Gmbh | DOSING DEVICE FOR GAS-SHAPED FUEL |
US4875439A (en) * | 1987-01-09 | 1989-10-24 | Brunswick Corporation | Marine propulsion system with fuel line cooler |
EP0611588A1 (en) * | 1993-02-19 | 1994-08-24 | Yorkshire Process Plant Limited | Method for heating a sugar solution |
EP0685639A2 (en) * | 1994-06-03 | 1995-12-06 | CENTRO RICERCHE FIAT Società Consortile per Azioni | Electronically controlled pressure regulator device for internal combustion engines supplied with a gaseous fuel, particularly methane |
WO1997047872A1 (en) * | 1996-06-07 | 1997-12-18 | William Michael Lynch | Gaseous fuel injection system |
FR2757217A1 (en) * | 1996-12-17 | 1998-06-19 | Gennaro Antoine Di | LPG feed system for marine petrol engine cooled by sea water |
EP0852348A1 (en) * | 1997-01-03 | 1998-07-08 | Renault | Thermostat, in particular for mounting downstream of an exchanger and upstream of a natural gas powered engine |
EP1016782A1 (en) * | 1998-12-30 | 2000-07-05 | POLIAUTO Ing. Pietro Parietti & C. S. n. c. | Apparatus for feeding liquid petroleum gas to internal combustion engines, comprising an isobaric vaporiser and a pressure reducer downstream of it |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002050416A1 (en) * | 2000-12-20 | 2002-06-27 | Antoine Di Gennaro | Device for expanding liquefied gas with separate vaporising element |
US7128060B2 (en) | 2000-12-20 | 2006-10-31 | Antoine Di Gennaro | Device for expanding liquefied gas with separate vaporizing element |
WO2003074860A1 (en) * | 2002-03-07 | 2003-09-12 | Jorge Gomez Marquez | Gasifier for carburation with liquid petroleum gas (lpg) |
WO2009141512A1 (en) | 2008-04-18 | 2009-11-26 | Antoine Di Gennaro | Device for bleeding gas from a vehicle liquefied petroleum gas tank to use it to start the engine |
WO2009143908A1 (en) * | 2008-05-27 | 2009-12-03 | Robert Bosch Gmbh | Fuel supply system for a gas-driven internal combustion engine |
Also Published As
Publication number | Publication date |
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FR2801643B1 (en) | 2003-01-31 |
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Effective date: 20130731 |