FR2486154A1 - Vehicle diesel engine fuel preheater - uses heat exchanger for engine cooling water with outlet valve controlling driving cabin heater - Google Patents

Vehicle diesel engine fuel preheater - uses heat exchanger for engine cooling water with outlet valve controlling driving cabin heater Download PDF

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Publication number
FR2486154A1
FR2486154A1 FR8015115A FR8015115A FR2486154A1 FR 2486154 A1 FR2486154 A1 FR 2486154A1 FR 8015115 A FR8015115 A FR 8015115A FR 8015115 A FR8015115 A FR 8015115A FR 2486154 A1 FR2486154 A1 FR 2486154A1
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France
Prior art keywords
engine
heat exchanger
fluid
exchanger
diesel engine
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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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Application number
FR8015115A
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French (fr)
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Individual
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Individual
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Priority to FR8015115A priority Critical patent/FR2486154A1/en
Publication of FR2486154A1 publication Critical patent/FR2486154A1/en
Withdrawn legal-status Critical Current

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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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/16—Other apparatus for heating fuel
    • 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
    • Y02T10/12—Improving ICE efficiencies

Abstract

For preheating the fuel for a Diesel engine the heat from the water circulating in the engine cooling system is used. The fuel is preheated by a heat exchanger through which the fuel and water travel in counter flow. The water supply for the heat exchanger is taken from a branch connection between the thermostatic valve controlling the flow to the engine radiator and the outlet from the engine. The water discharged from the heat exchanger passes through a two way by pass valve with one outlet to the radiator and another to a heater in the vehicle driving cabin.

Description

La présente invention concerne un dispositif de préchauffage du combustible, en particulier du gas-oil, alimentant un moteur diesel afin de porter le combustible à une température optimale d'environ 700 C qui procure un bon écoulement du fluide combustible et une combustion plus complète contribuant ainsi à une économie d'énergie et à une diminution de pollution. The present invention relates to a device for preheating fuel, in particular diesel, supplying a diesel engine in order to bring the fuel to an optimum temperature of around 700 ° C. which provides good flow of the combustible fluid and more complete combustion contributing thus saving energy and reducing pollution.

On connait déjà de tels dispositifs de réchauffage qui font appel comme source de chaleur aux gaz d'échappement, leéchange calorique se faisant soit à l'aide de serpentins entourant le tube d'échappement, soit à l'aide d'un échangeur à deux chambres dont l'une est traversée par une partie dérivée des gaz d'échappement et l'autre par le fluide combustible. Such heating devices are already known which use the exhaust gases as a heat source, the heat exchange being carried out either using coils surrounding the exhaust tube, or using a two-way heat exchanger. chambers, one of which is traversed by a part derived from the exhaust gases and the other by the combustible fluid.

Ces dispositifs connus présentent plusieurs inconvéni ents, en particulier un danger d'incendie en cas de fuite et une mauvaise régulation de la température de réchauffage qui est fonction de celle des gaz d'échappement qui varie fortement suivant les régimes du moteur et la puissance gu'il fournit. De plus ces dispositifs sont difficile à monter et doivent être adaptés à chaque type de moteur. These known devices have several drawbacks, in particular a fire danger in the event of a leak and poor regulation of the reheating temperature which is a function of that of the exhaust gases which varies greatly according to the engine speeds and the power gu 'he gives. In addition, these devices are difficult to assemble and must be adapted to each type of engine.

D'autres dispositifs de préchauffage sont électriques et sont utilisés à l'arrêt. Ils sont onéreux et de régulation délicate. Other preheating devices are electric and are used when stopped. They are expensive and delicate to regulate.

L'invention a pour but de remédier à ces inconvénients en utilisant une source de chaleur parfaitement régulée et constante permettant de réaliser un dispositif simple facilement adaptable à tous les types de moteur. The invention aims to remedy these drawbacks by using a perfectly regulated and constant heat source making it possible to produce a simple device easily adaptable to all types of engine.

L'invention a donc pour objet un dispositif de préchauffage du fluide combustible d'un moteur en particulier du gasoil alimentant un moteur diesel, ce dispositif comprenant un échangeur à deux chambres dont l'une est traversée par le fluide combustible d'alimentation du moteur, caractérisé en ce que l'autre chambre de ltéchangeur est traversée par le fluide de refroidissement du moteur, cette chambre étant montée en dérivation sur le circuit de refroidissement du moteur. The subject of the invention is therefore a device for preheating the combustible fluid of an engine, in particular diesel fueling a diesel engine, this device comprising a two-chamber exchanger, one of which is crossed by the combustible fluid supplying the engine. , characterized in that the other exchanger chamber is traversed by the engine coolant, this chamber being mounted as a bypass on the engine cooling circuit.

Selon une autre caractéristique, la chambre du fluide de refroidissement est connectée au circuit de refroidissement en amont de la vanne thermostatique qui relie le circuit de refroidissement du moteur au radiateur. According to another characteristic, the coolant chamber is connected to the cooling circuit upstream of the thermostatic valve which connects the cooling circuit of the engine to the radiator.

Outre les dispositions qui précèdent, l'invention comporte d'autres caractéristiques qui ressortiront de la description qui va suivre et qui se réfère au déssin annexé dans lequel - la figure unique est une vue schématique du dispositif selon l'invention monté sur l'alimentation d'un moteur diésel. In addition to the foregoing arrangements, the invention includes other characteristics which will emerge from the description which follows and which refers to the appended drawing in which - the single figure is a schematic view of the device according to the invention mounted on the power supply of a diesel engine.

Comme représenté au dessin, l'échangeur (1) selon l'in Invention, est monté sur le circuit d'alimentation du moteur (2) entre ce dernier et le réservoir (3) de gas-oil. Le conduit (4) d'alimentation provenant du réservoir traverse l'échangeur (1) à la sortie duquel est disposée une bougie (5) de chauffe de gas-oil utilisée pour le démarrage puis le filtre (6) et la pompe d'injection (7) qui est relié également au réservoir par un conduit (8) de retour. As shown in the drawing, the exchanger (1) according to the invention, is mounted on the engine supply circuit (2) between the latter and the diesel tank (3). The supply duct (4) coming from the tank crosses the exchanger (1) at the outlet of which is a candle (5) for heating diesel used for starting then the filter (6) and the pump. injection (7) which is also connected to the reservoir by a return conduit (8).

Le conduit (4) qui traverse l'échangeur, est chauffé par l'eau provenant du circuit de refroidissement du moteur. The conduit (4) which passes through the exchanger is heated by the water coming from the engine cooling circuit.

Pour avoir une température régulée et constante, l'échangeur est relié au circuit de refroidissement en amont de la vanne thermostatique (9) qui connecte le circuit de refroidissement du moteur au radiateur (10). La sortie d'eau chaude de l'é- changeur est équipée d'une vanne by-pass (11) à deux voies, l'une étant branchée sur le chauffage (12) de la cabine du véhicule, l'autre conduisant à un raccord en T (13) dont une branche est reliée à la sortie du chauffage (12) et l'autre à l'entrée du radiateur (10).To have a regulated and constant temperature, the exchanger is connected to the cooling circuit upstream of the thermostatic valve (9) which connects the engine cooling circuit to the radiator (10). The hot water outlet of the exchanger is fitted with a two-way bypass valve (11), one being connected to the heating (12) of the vehicle cabin, the other leading to a T-connector (13), one branch of which is connected to the outlet of the heater (12) and the other to the inlet of the radiator (10).

Le fonctionnement du dispositif selon l'invention est très simple et efficace. Lors du démarrage, on utilise la bougie (5) de chauffage. Après quelques instants de marche du moteur, l'eau de refroidissement du moteur atteint sa température de fonctionnement entre 800 et 850 et l'eau qui circule dans l'échangeur (1) réchauffe le fluide combustible qui passe dans le conduit (4). The operation of the device according to the invention is very simple and effective. During start-up, the heating plug (5) is used. After a few moments of running the engine, the engine cooling water reaches its operating temperature between 800 and 850 and the water which circulates in the exchanger (1) heats the combustible fluid which passes in the conduit (4).

Du fait de la vanne thermostatique (9), l'eau qui sircule dans l'échangeur reste à une température sensiblement constante 80 C environ, quelque soit le régime et la puissance développée par le moteur. Because of the thermostatic valve (9), the water which circulates in the exchanger remains at a substantially constant temperature around 80 C, whatever the speed and the power developed by the engine.

L'échangeur peut être équipé de robinets de purge sur le circuit d'eau et sur le circuit de fluide combustible et une sonde thermométrique peut être montée sur le circuit de
fluide combustible à la sortie de l'échangeur.The exchanger can be fitted with drain valves on the water circuit and on the combustible fluid circuit and a thermometric probe can be fitted on the
combustible fluid at the outlet of the exchanger.

Le dispositif selon l'invention est destiné en parti
culier aux moteurs diésel mais il peut être évidemment uti
lisé pour des moteurs dans lesquels il serait profitable de
réchauffer le fluide combustible pour amérer sa pulvérisa
tion et sa combustion.The device according to the invention is intended in part
diesel engine but it can obviously be useful
read for engines in which it would be profitable to
reheat the combustible fluid to make it spray
tion and its combustion.

A cet effet on peut envisager son utilisation dans les
chaudières à mazout pour amener ce dernier a une température optimale avant son introduction dans le pulvérisateur; il suffirait de faire circuler dans l'échangeur de l'eau à température constante, par exemple de l'eau prélevée directement dans la chaudière, eau qui est en principe maintenue à une température de 700 à 800 par le thermostat de la chaudière.For this purpose we can consider its use in
oil-fired boilers to bring the latter to an optimum temperature before its introduction into the sprayer; it would suffice to circulate in the exchanger water at constant temperature, for example water taken directly from the boiler, water which is in principle maintained at a temperature of 700 to 800 by the thermostat of the boiler.

L'invention n'est nullement limitée aux modes de réalisation et dfapplication qui viennent d'etre décrits; elle embrasse, au contraire, toutes les variantes qui peuvent venir à l'esprit du technicien en la matière, sans s'écarter du cadre, ni de la portée de a présente invention.  The invention is in no way limited to the embodiments and applications which have just been described; it embraces, on the contrary, all the variants which can come to the mind of the technician in the matter, without departing from the framework or the scope of the present invention.

Claims (4)

RevendicationsClaims 1 Dispositif de préchauffage d'un fluide combustible avant son injection et sa combustion, utilisable en particulier pour un moteur diésel sur un véhicule, ce dispositif qui comporte un échangeur dont une chambre est traversée par le fluide combustibles étant caractérisé en ce que l'autre chambre de l'échangeur (i) est traversée par un fluide à température constante provenant de l'appareil où se fait la combustion.1 device for preheating a combustible fluid before injection and combustion, usable in particular for a diesel engine on a vehicle, this device which comprises an exchanger, one chamber of which is crossed by the combustible fluid being characterized in that the other exchanger chamber (i) is traversed by a fluid at constant temperature coming from the apparatus where combustion takes place. 2 Dispositif selon la revendication 1 caractérisé en ce que le fluide à température contante est le fluide de refroidissement du moteur ou se fait la combustion et qui sert de fluide chauffant.2 Device according to claim 1 characterized in that the fluid at constant temperature is the engine cooling fluid where combustion takes place and which serves as a heating fluid. 3 Dispositif selon la revendication 2 caractérisé en ce que le fluide de refroidissement est prélevé en amont de la vanne(9)thermostatique qui relie le circuit de refroidissement du moteur (2) à son radiateur (10).3 Device according to claim 2 characterized in that the cooling fluid is taken upstream of the thermostatic valve (9) which connects the engine cooling circuit (2) to its radiator (10). 4 Dispositif selon la revendication 3 caractérisé en ce que la sortie du fluide chauffant de L'échangeur se fait à travers une vanne by-pass (11) à deux voies, l'une étant reliée au chauffage (12) de la cabine du véhicule sur lequel est monté le moteur, et l'autre étant reliée au radiateur(10). 4 Device according to claim 3 characterized in that the outlet of the heating fluid from the exchanger is done through a two-way by-pass valve (11), one being connected to the heating (12) of the vehicle cabin on which the engine is mounted, and the other being connected to the radiator (10).
FR8015115A 1980-07-07 1980-07-07 Vehicle diesel engine fuel preheater - uses heat exchanger for engine cooling water with outlet valve controlling driving cabin heater Withdrawn FR2486154A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8015115A FR2486154A1 (en) 1980-07-07 1980-07-07 Vehicle diesel engine fuel preheater - uses heat exchanger for engine cooling water with outlet valve controlling driving cabin heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8015115A FR2486154A1 (en) 1980-07-07 1980-07-07 Vehicle diesel engine fuel preheater - uses heat exchanger for engine cooling water with outlet valve controlling driving cabin heater

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FR2486154A1 true FR2486154A1 (en) 1982-01-08

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534317A1 (en) * 1982-10-06 1984-04-13 Debeaux Michel Gas oil reheating-thawing device for vehicle with diesel engine
FR2541377A1 (en) * 1983-02-22 1984-08-24 Scoma Energie METHOD AND DEVICE FOR HEAT EXCHANGING, PARTICULARLY FOR HEATING FUEL IN INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL
FR2577033A1 (en) * 1985-01-31 1986-08-08 Ponzo Pierre Device for reheating a petroleum liquid, such as gas oil or fuel oil
WO1987000887A1 (en) * 1985-08-03 1987-02-12 Georg Feder Device for preheating diesel fuel
WO1989005399A1 (en) * 1987-12-02 1989-06-15 Wagner-Polybau Szolgáltató Kft. Arrangement for facilitating exploitation of an internal combustion engine by preheating the fuel of the engine
USRE34178E (en) * 1980-09-19 1993-02-16 Davco Manufacturing Corporation Fuel processor apparatus for diesel powered vehicles
US6109346A (en) * 1998-01-20 2000-08-29 Hill; Gary G. Waste heat auxiliary tank system method and apparatus

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302450C (en) * 1915-07-19 1920-09-28 Working methods for internal combustion engines
FR2177159A5 (en) * 1972-03-21 1973-11-02 Seris
CH560320A5 (en) * 1972-12-11 1975-03-27 Lacrex Brevetti Sa Diesel engine fuel pre-heating system - uses halogen lamp in heat exchanger
FR2263391A1 (en) * 1974-03-07 1975-10-03 Fuel Expanders I.C. engine carburettor gasifier attachment - having heated interior expansion chamber
US3913543A (en) * 1973-03-14 1975-10-21 Henri Richard Fuel heating system for an internal combustion engine
US3989109A (en) * 1975-07-21 1976-11-02 Feecon Corporation Fire fighting turret
US4180036A (en) * 1978-01-23 1979-12-25 Gil Wolf Fuel temperature control
DE2841249A1 (en) * 1978-09-22 1980-04-03 Bosch Gmbh Robert Filtration equipment for diesel motor fuel - has main heat exchanger for filtered fuel and heating water with three loop cycles for latter leading through valves and other heat exchange
GB2031992A (en) * 1978-10-18 1980-04-30 Gros R And Perez S A system for pre-heating boiler or diesel engine fuel

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE302450C (en) * 1915-07-19 1920-09-28 Working methods for internal combustion engines
FR2177159A5 (en) * 1972-03-21 1973-11-02 Seris
CH560320A5 (en) * 1972-12-11 1975-03-27 Lacrex Brevetti Sa Diesel engine fuel pre-heating system - uses halogen lamp in heat exchanger
US3913543A (en) * 1973-03-14 1975-10-21 Henri Richard Fuel heating system for an internal combustion engine
FR2263391A1 (en) * 1974-03-07 1975-10-03 Fuel Expanders I.C. engine carburettor gasifier attachment - having heated interior expansion chamber
US3989109A (en) * 1975-07-21 1976-11-02 Feecon Corporation Fire fighting turret
US4180036A (en) * 1978-01-23 1979-12-25 Gil Wolf Fuel temperature control
DE2841249A1 (en) * 1978-09-22 1980-04-03 Bosch Gmbh Robert Filtration equipment for diesel motor fuel - has main heat exchanger for filtered fuel and heating water with three loop cycles for latter leading through valves and other heat exchange
GB2031992A (en) * 1978-10-18 1980-04-30 Gros R And Perez S A system for pre-heating boiler or diesel engine fuel
FR2439360A1 (en) * 1978-10-18 1980-05-16 Stella Jean FUEL OR FUEL HEATER-SAVER

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34178E (en) * 1980-09-19 1993-02-16 Davco Manufacturing Corporation Fuel processor apparatus for diesel powered vehicles
FR2534317A1 (en) * 1982-10-06 1984-04-13 Debeaux Michel Gas oil reheating-thawing device for vehicle with diesel engine
FR2541377A1 (en) * 1983-02-22 1984-08-24 Scoma Energie METHOD AND DEVICE FOR HEAT EXCHANGING, PARTICULARLY FOR HEATING FUEL IN INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL
EP0120733A1 (en) * 1983-02-22 1984-10-03 SCOMA - ENERGIE, Sarl dite: Device for heating diesel engine fuel
FR2577033A1 (en) * 1985-01-31 1986-08-08 Ponzo Pierre Device for reheating a petroleum liquid, such as gas oil or fuel oil
WO1987000887A1 (en) * 1985-08-03 1987-02-12 Georg Feder Device for preheating diesel fuel
WO1989005399A1 (en) * 1987-12-02 1989-06-15 Wagner-Polybau Szolgáltató Kft. Arrangement for facilitating exploitation of an internal combustion engine by preheating the fuel of the engine
US6109346A (en) * 1998-01-20 2000-08-29 Hill; Gary G. Waste heat auxiliary tank system method and apparatus

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