FR2465886A1 - Supply system mixing two grades of diesel fuel oil - has servo control for low grade feed pump and high grade gravity feed maintaining ratio - Google Patents

Supply system mixing two grades of diesel fuel oil - has servo control for low grade feed pump and high grade gravity feed maintaining ratio Download PDF

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Publication number
FR2465886A1
FR2465886A1 FR7923409A FR7923409A FR2465886A1 FR 2465886 A1 FR2465886 A1 FR 2465886A1 FR 7923409 A FR7923409 A FR 7923409A FR 7923409 A FR7923409 A FR 7923409A FR 2465886 A1 FR2465886 A1 FR 2465886A1
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France
Prior art keywords
fuel oil
engine
supply system
oil
mixing
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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Application number
FR7923409A
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French (fr)
Inventor
Jiro Kurasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Line Ltd
Original Assignee
Showa Line Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa Line Ltd filed Critical Showa Line Ltd
Priority to FR7923409A priority Critical patent/FR2465886A1/en
Publication of FR2465886A1 publication Critical patent/FR2465886A1/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Withdrawn legal-status Critical Current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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0657—Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0684—High pressure fuel injection systems; Details on pumps, rails or the arrangement of valves in the fuel supply and return systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
    • 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
    • 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)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The fuel supply system provides a diesel engine with hiqh and low quality fuel oil simultaneously. It is used in ship's engines for purposes of economy. The high quality oil is stored in a vessel (3) above a diesel engine (1) to drive the generator. The second vessel (10) is installed above the main engine (2) and stores the heavy oil. The high quality fuel is supplied by gravity feed. The low quality oil is supplied via a pump (15). The two grades of oil are mixed in a given proportion by means of a ratio control unit (22) and a servo control circuit (21) which supplies an output signal to a pressure converter (23). The heavy oil (10) is reduced in viscosity by a heating coil (11).

Description

La présente invention concerne un système d'alimentation en carburant d'un moteur Diesel, et plus particulièrement un système d'alimentation à carburants mélangés. The present invention relates to a fuel supply system for a diesel engine, and more particularly to a mixed fuel supply system.

Pour faire fonctionner des moteurs Diesel de grandes dimensions, tels que ceux destinés à la production d'électricité sur des navires, le mazout lourd ne convient pas et le mazout type diesel marin est trop bon et trop cher. C'est pourquoi il est plus économique d'alimenter ce type de moteur avec un carburant provenant du mélange de ces deux types de mazout. To operate large diesel engines, such as those intended for the production of electricity on ships, heavy fuel oil is not suitable and marine diesel type fuel oil is too good and too expensive. This is why it is more economical to supply this type of engine with fuel from the mixture of these two types of fuel oil.

Différents systèmes de carburants mélangés ont été proposés à ce jour, et en particulier des systèmes comprenant deux pompes à combustible à débit variable, l'une pour le mazout type diesel marin, et l'autre pour le mazout lourd, un mélangeur, ainsi qu'un réservoir à partir duquel le carburant mélangé alimente le moteur. Various mixed fuel systems have been proposed to date, and in particular systems comprising two variable-flow fuel pumps, one for fuel oil of the marine diesel type, and the other for heavy fuel oil, a mixer, as well as '' a tank from which the mixed fuel powers the engine.

Cependant, ces systèmes existants présentent l'inconvénient qu'en cas de panne de la pompe à mazout type Diesel marin, le moteur sera alimenté par du mazout lourd pur, ce qui peut entraîner de sérieuses avaries au moteur. Un autre inconvénient résulte du fait que le stockage de combustible mélangé dans le réservoir y produit une quantité considérable de dépôt boueux. However, these existing systems have the drawback that in the event of failure of the marine diesel type oil pump, the engine will be powered by pure heavy fuel oil, which can cause serious damage to the engine. Another drawback results from the fact that the storage of mixed fuel in the tank produces a considerable amount of muddy deposit there.

Suivant la présente invention, le système d'alimentation comprend un réservoir haut placé pour alimenter par gravité le moteur avec un mazout de qualité supérieure, tel que le type Diesel marin, une pompe pour alimenter le moteur avec un mazout de qualité inférieure, tel qu'un mazout lourd, et une vanne de contrôle de débit pour réguler le débit de mazout de qualité inférieure. Un mélangeur est raccordé d'une part à la sortie du réservoir et à celle de la pompe, et d'autre part à l'admission du moteur. According to the present invention, the supply system comprises a high tank placed to supply the engine by gravity with a higher quality fuel oil, such as the marine diesel type, a pump to supply the engine with a lower quality fuel oil, such as '' heavy fuel oil, and a flow control valve to regulate the flow of substandard fuel oil. A mixer is connected on the one hand to the outlet of the tank and to that of the pump, and on the other hand to the engine intake.

Cette disposition élimine l'emploi d'un réservoir à carburants mélangés. Par conséquent, le carburant mélangé est directement envoyé au moteur, et cette alimentation directe rend impossible la formation de dépôt. Le réservoir en charge permet l'alimentation par gravité du moteur en mazout de qualité superieure, ce qui garantit un fonctionnement sûr du moteur en cas d'une panne de pompe. La valve de contrôle de débit permet d'ajuster librement le rapport des débits.This arrangement eliminates the use of a mixed fuel tank. Consequently, the mixed fuel is sent directly to the engine, and this direct supply makes deposit formation impossible. The tank under load provides the engine with gravity supply of high-quality fuel oil, which guarantees safe engine operation in the event of a pump failure. The flow control valve allows the flow rate ratio to be freely adjusted.

La vanne de contrôle de débit est de pré- férence munie d'un dispositif d'asservissement à boucle fermée qui maintient le rapport des débits à la valeur souhaitée sous diverses conditions. The flow control valve is preferably provided with a closed loop control device which maintains the ratio of flow rates to the desired value under various conditions.

Dans une réalisation préférée de l'invention, le mélangeur se compose d'un corps tubulaire formant un passage pour fluide, contenant un élément mélangeur immobile. Ce type de mélangeur donne une plus grande fiabilité au système en raison de l'absence de pièce mobile. In a preferred embodiment of the invention, the mixer consists of a tubular body forming a passage for fluid, containing a stationary mixer element. This type of mixer gives greater reliability to the system due to the absence of moving parts.

Une réalisation préférée est exposée dans la description détaillée suivante, qui sera mieux comprise en relation avec les dessins annexés, dans lesquels
- la Figure 1 représente un diagramme schématique d'un système d'alimentation suivant la présente invention,
- la Figure 2 est une coupe partielle d'un mélangeur compris dans la Figure 1,
- la Figure 3 est une vue agrandie en perspective isométrique d'un des composants du mé- langeur représenté sur la Figure 2.A preferred embodiment is set out in the following detailed description, which will be better understood in relation to the appended drawings, in which
FIG. 1 represents a schematic diagram of a supply system according to the present invention,
FIG. 2 is a partial section of a mixer included in FIG. 1,
FIG. 3 is an enlarged view in isometric perspective of one of the components of the mixer shown in FIG. 2.

En se référant maintenant aux dessins, on a représenté sur la Figure 1 un système d'alimentation à carburants mélangés d'un moteur Diesel 1, qui fournit le mouvement primaire d'un générateur d'électricité et est placé dans la salle des machines d'un navire ayant un moteur principal 2 pour la propulsion. Referring now to the drawings, there is shown in Figure 1 a mixed fuel supply system of a Diesel engine 1, which provides the primary movement of an electricity generator and is placed in the engine room of 'a ship having a main engine 2 for propulsion.

Un réservoir haut placé 3 est monté audessus du moteur et contient du mazout type Diesel marin amené par pompage d'un réservoir principal (non représenté). Le bas du réservoir 3 est raccordé à l'admission de carburant du moteur 1 par les deux conduits 4 et 5 avec des vannes 6 et 7 et par un conduit 8 avec une vanne 9. Normalement, les vannes 6 et 7 sont maintenues ouvertes et la vanne 9 fermée. A high placed tank 3 is mounted above the engine and contains fuel oil of the marine diesel type supplied by pumping from a main tank (not shown). The bottom of the tank 3 is connected to the fuel intake of the engine 1 by the two pipes 4 and 5 with valves 6 and 7 and by a pipe 8 with a valve 9. Normally, the valves 6 and 7 are kept open and valve 9 closed.

Le conduit 8 est utilisé pour envoyer directement du mazout type Diesel marin au moteur 1, notamment au démarrage du moteur.The conduit 8 is used to directly send fuel oil of the marine diesel type to the engine 1, in particular when the engine is started.

Un réservoir haut placé 10, monté plus haut que le moteur principal 2, contient du mazout lourd, amené par pompage d'un réservoir principal (non représenté). A l'intérieur du réservoir 10 est disposée une bouche Il de chauffage à la vapeur pour réduire la viscosité du mazout lourd. Le réservoir 10 est raccordé par un conduit 12 à l'admission de carburant du moteur principal 2, vers lequel le mazout lourd coule en descendant par gravité. A high placed tank 10, mounted higher than the main engine 2, contains heavy fuel oil, supplied by pumping from a main tank (not shown). Inside the tank 10 is disposed a steam heating mouth 11 to reduce the viscosity of the heavy fuel oil. The tank 10 is connected by a conduit 12 to the fuel intake of the main engine 2, to which the heavy fuel oil flows downward by gravity.

Un conduit 13, branché en dérivation sur le conduit 12, est raccordé à une pompe centrifuge 15 à travers une vanne 14. La sortie de la pompe 15 est raccordée au conduit 5 par un conduit 16. A duct 13, connected in branch to the duct 12, is connected to a centrifugal pump 15 through a valve 14. The outlet of the pump 15 is connected to the duct 5 by a duct 16.

Des vannes 17 et 18 de contrôle de débit sont branchées en parallèle sur le conduit 16. La vanne 18 est utilisée en cas d'urgence et est maintenue normalement fermée. La vanne 17 est du type à commande par air comprimé et est munie d'un dispositif d'asservissement à réaction, qui est constitué par des transducteurs de débit 19 et 20, par un cir cuit de commande 21 avec un afficheur 22 du rapport souhaité de mélange et par un convertisseur de pression 23. Valves 17 and 18 for flow control are connected in parallel to the duct 16. The valve 18 is used in an emergency and is kept normally closed. The valve 17 is of the compressed air control type and is provided with a reaction control device, which is constituted by flow transducers 19 and 20, by a control circuit 21 with a display 22 of the desired ratio mixing and by a pressure converter 23.

Les débits de combustible dans les conduits 4 et 16 sont mesurés par les transducteurs de débit 19 et 20 et les résultats des mesures sont envoyés dans le circuit de commande 21. Le circuit 21 compare le rapport des mesures de débit avec le rapport affiché (valeur souhaitée), introduit par l'afficheur 22 de rapport de mélange, et délivre un signal de commande. Suivant l'intensité de ce signal, le convertisseur 23 contrôle la pression d'air comprimé envoyé par un conduit 24, et cet air comprimé régulé est appliqué au diaphragme de la vanne 17 par l'intermédiaire d'un conduit 25. La vanne 17 est ainsi positionnée d'une manière telle que le rapport des débits soit à sa valeur souhaitée, même sous diverses conditions. Les éléments décrits ci-dessus et le circuit de commande 21 peuvent se trouver parmi les éléments et les circuits de l'art antérieur. The fuel flows in the conduits 4 and 16 are measured by the flow transducers 19 and 20 and the results of the measurements are sent to the control circuit 21. The circuit 21 compares the ratio of the flow measurements with the displayed ratio (value desired), introduced by the display 22 of the mixing ratio, and delivers a control signal. Depending on the intensity of this signal, the converter 23 controls the pressure of compressed air sent through a conduit 24, and this regulated compressed air is applied to the diaphragm of the valve 17 via a conduit 25. The valve 17 is thus positioned in such a way that the flow ratio is at its desired value, even under various conditions. The elements described above and the control circuit 21 can be found among the elements and circuits of the prior art.

Sur le conduit 5 sont disposés un réchauffeur de combustible 26 pour réduire la viscosité du mazout et un mélangeur 27. On the pipe 5 are arranged a fuel heater 26 to reduce the viscosity of the fuel oil and a mixer 27.

Le mélangeur 27, dans une réalisation préférée, comprend un corps tubulaire 28 (en coupe par tielle sur la Figure 2) déterminant un passage pour fluide, avec des brides annulaires 29 pour raccordement à chaque extrémité, et un certain nombre d'éléments statiques de mélange 30, disposés dans le corps 28. The mixer 27, in a preferred embodiment, comprises a tubular body 28 (in partial section in FIG. 2) defining a passage for fluid, with annular flanges 29 for connection at each end, and a certain number of static elements of mixture 30, arranged in the body 28.

Chaque élément de mélange est constitué d'un certain nombre de feuilles ondulées 31 de métal. Each mixing element consists of a number of corrugated sheets 31 of metal.

Ces feuilles sont superposées rigidement, avec leurs ondulations disposées à angles droits l'une par rapport à l'autre. Le chemin tortueux formé entre les feuilles 31 produit un écoulement turbulent du fluide. Les éléments de mélange 30 sont placés dans le corps 28 de manière que leurs feuilles 31 fassent un angle droit entre elles, de sorte que des divisions du fluide se produisent à l'extrémité amont de chaque élément de mélange. Ainsi, par cette division et par la formation de l'écoulement turbulent, le mazout passant dans le mélangeur est transformé en un carburant mélangé d'une manière homogène.These sheets are rigidly superimposed, with their undulations arranged at right angles to each other. The tortuous path formed between the sheets 31 produces a turbulent flow of the fluid. The mixing elements 30 are placed in the body 28 so that their sheets 31 make a right angle therebetween, so that divisions of the fluid occur at the upstream end of each mixing element. Thus, by this division and by the formation of the turbulent flow, the fuel oil passing through the mixer is transformed into a fuel mixed in a homogeneous manner.

En fonctionnement, le mazout type Diesel marin du réservoir haut placé 3 coule par gravité par les conduits 4 et 5 dans le moteur 1. La pompe 15 envoie le mazout lourd du réservoir 10 au moteur 1 à travers les conduits 12, 13, 16 et 5. Dans leurs cheminements vers le moteur, les deux types de mazout se rencontrent dans le conduit 5 et coulent ensemble à travers le réchauffeur de combustible 26 et à travers le mélangeur 27, ces deux éléments transformant les deux types de mazout en un mazout mélangé d'une manière homogène, avec une viscosité appropriée. Ce mélange de carburant s'écoule vers le moteur et est brûlé. Le rapport du mélange des mazouts mélangés est maintenu à la valeur souhaitée par la vanne de réglage de débit 17 à fonctionnement asservi, en boucle fermée. In operation, the marine diesel fuel oil from the top tank 3 flows by gravity through the pipes 4 and 5 into the engine 1. The pump 15 sends the heavy fuel oil from the tank 10 to the engine 1 through the pipes 12, 13, 16 and 5. In their pathways to the engine, the two types of fuel oil meet in line 5 and flow together through the fuel heater 26 and through the mixer 27, these two elements transforming the two types of fuel oil into a mixed fuel oil homogeneously, with an appropriate viscosity. This fuel mixture flows to the engine and is burned. The ratio of the mixture of mixed fuel oils is maintained at the desired value by the flow control valve 17 with controlled operation, in closed loop.

Bien que la description qui a été donnée ci-dessus constitue une réalisation préférée de l'invention, il doit être compris, bien entendu, que diverses modifications et changements peuvent y être apportés sans sortir du domaine de l'invention.  Although the description which has been given above constitutes a preferred embodiment of the invention, it should be understood, of course, that various modifications and changes can be made thereto without departing from the scope of the invention.

Claims (5)

REVENDICATIONS 1. Système d'alimentation en carburant d'un moteur Diesel simultanément en mazout de qualité supérieure et en mazout de qualité inférieure, caractérisé en ce qu'il comprend 1. Fuel supply system for a diesel engine simultaneously with higher quality fuel oil and lower quality fuel oil, characterized in that it comprises - un réservoir placé plus haut que le moteur de façon à permettre l'alimentation par gravité du moteur par du mazout de qualité supérieure contenu dans ledit réservoir-; - a tank placed higher than the engine so as to allow the engine to be fed by gravity with high quality fuel oil contained in said tank; - une pompe pour alimenter le mazout de qualité inférieure depuis sa source jusqu'au moteur - a pump to supply the lower quality fuel oil from its source to the engine - des moyens de mélange pour mélanger ensemble les deux types de mazout, dont l'entrée est reliée audit réservoir et à la sortie de ladite pompe, et dont la sortie est reliée au moteur ; et - mixing means for mixing together the two types of fuel oil, the inlet of which is connected to said tank and to the outlet of said pump, and the outlet of which is connected to the engine; and - des vannes de réglage pour régler le débit du mazout de qualité inférieure au moteur. - adjustment valves to regulate the flow rate of lower quality fuel oil to the engine. 2. Système d'alimentation suivant la revendication 1, caractérisé en ce que lesdits moyens de mélange comprennent un corps tubulaire déterminant un passage pour fluide et un certain nombre d'éléments statiques disposés dans ledit corps tubulaire pour mélanger le fluide s'écoulant dans le passage. 2. Supply system according to claim 1, characterized in that said mixing means comprise a tubular body defining a passage for fluid and a certain number of static elements arranged in said tubular body for mixing the fluid flowing in the passage. 3. Système d'alimentation suivant la revendication 2, caractérisé en ce que chacun desdits éléments de mélange est constitué par un certain nombre de feuilles ondulées superposées rigidement avec leurs ondulations disposées à angles droits l'une par rapport à l'autre, lesdits éléments de mélange étant disposés de façon que les feuilles ondulées fassent des angles droits l'une par rapport à l'autre. 3. Feeding system according to claim 2, characterized in that each of said mixing elements consists of a number of corrugated sheets rigidly superimposed with their corrugations arranged at right angles to each other, said elements being arranged so that the corrugated sheets make right angles to each other. 4. Système d'alimentation suivant la re vendication 1, caractérisé en ce que les vannes de réglages sont reliées à une boucle d'asservissement comprenant des transducteurs de débit pour mesurer le débit de chacun des types de mazout, et un circuit de commande attaqué par lesdits transducteurs pour actionner une vanne de façon à maintenir le rapport entre les débits des deux types de mazout à une valeur souhaitée. 4. Supply system according to vendification 1, characterized in that the adjustment valves are connected to a control loop comprising flow transducers for measuring the flow rate of each of the types of fuel oil, and an attacked control circuit by said transducers to actuate a valve so as to maintain the ratio between the flow rates of the two types of fuel oil at a desired value. 5. Système d'alimentation suivant la revendication 1, caractérisé en ce qu'il comprend des moyens de réchauffage des deux types de mazout, placés en série avec lesdits moyens de mélange. 5. Fuel system according to claim 1, characterized in that it comprises means for heating the two types of fuel oil, placed in series with said mixing means.
FR7923409A 1979-09-20 1979-09-20 Supply system mixing two grades of diesel fuel oil - has servo control for low grade feed pump and high grade gravity feed maintaining ratio Withdrawn FR2465886A1 (en)

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FR7923409A FR2465886A1 (en) 1979-09-20 1979-09-20 Supply system mixing two grades of diesel fuel oil - has servo control for low grade feed pump and high grade gravity feed maintaining ratio

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FR7923409A FR2465886A1 (en) 1979-09-20 1979-09-20 Supply system mixing two grades of diesel fuel oil - has servo control for low grade feed pump and high grade gravity feed maintaining ratio

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510664A1 (en) * 1981-08-03 1983-02-04 Reparations Meca Ste Auxil FUEL SUPPLY DEVICE FOR DIESEL ENGINES, PARTICULARLY LOW AND MEDIUM POWER

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CH434873A (en) * 1964-07-23 1967-04-30 Louis Gratzmuller Jean Heavy Oil Diesel Engine
US3415264A (en) * 1962-12-06 1968-12-10 Plenty And Son Ltd Blenders for blending two or more liquids
GB1395969A (en) * 1972-11-16 1975-05-29 Farny P Internal combustion engine
FR2407357A1 (en) * 1977-10-31 1979-05-25 Caterpillar Tractor Co DEVICE FOR INTRODUCING AN ADDITIVE INTO THE FUEL OF A DIESEL ENGINE

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Publication number Priority date Publication date Assignee Title
US2319858A (en) * 1941-02-24 1943-05-25 Harlow B Grow Method and means for controlling combustion engines
GB841261A (en) * 1956-07-24 1960-07-13 Calipornia Res Corp Improvements in or relating to compression ignition engine fuel systems
US3415264A (en) * 1962-12-06 1968-12-10 Plenty And Son Ltd Blenders for blending two or more liquids
CH434873A (en) * 1964-07-23 1967-04-30 Louis Gratzmuller Jean Heavy Oil Diesel Engine
GB1395969A (en) * 1972-11-16 1975-05-29 Farny P Internal combustion engine
FR2407357A1 (en) * 1977-10-31 1979-05-25 Caterpillar Tractor Co DEVICE FOR INTRODUCING AN ADDITIVE INTO THE FUEL OF A DIESEL ENGINE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510664A1 (en) * 1981-08-03 1983-02-04 Reparations Meca Ste Auxil FUEL SUPPLY DEVICE FOR DIESEL ENGINES, PARTICULARLY LOW AND MEDIUM POWER
EP0072295A2 (en) * 1981-08-03 1983-02-16 Societe Auxiliaire De Reparations Mecaniques S.A.R.M. Fuel supply device for a diesel engine, particularly of small and medium power size
EP0072295A3 (en) * 1981-08-03 1983-12-07 Societe Auxiliaire De Reparations Mecaniques S.A.R.M. Fuel supply device for a diesel engine, particularly of small and medium power size

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