EP1963795A1 - Method and device for automatically measuring oil consumption of an internal combustion engine and for changing the oil of said engine - Google Patents

Method and device for automatically measuring oil consumption of an internal combustion engine and for changing the oil of said engine

Info

Publication number
EP1963795A1
EP1963795A1 EP06847162A EP06847162A EP1963795A1 EP 1963795 A1 EP1963795 A1 EP 1963795A1 EP 06847162 A EP06847162 A EP 06847162A EP 06847162 A EP06847162 A EP 06847162A EP 1963795 A1 EP1963795 A1 EP 1963795A1
Authority
EP
European Patent Office
Prior art keywords
oil
measuring
tank
engine
measuring tank
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.)
Withdrawn
Application number
EP06847162A
Other languages
German (de)
French (fr)
Inventor
Jean-Pierre Despres
Jésus MURGUI DE FUENTES
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP1963795A1 publication Critical patent/EP1963795A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
    • G01F9/001—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine with electric, electro-mechanic or electronic means
    • G01F9/003—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine with electric, electro-mechanic or electronic means by measuring the weight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G17/00—Apparatus for or methods of weighing material of special form or property
    • G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
    • G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge

Definitions

  • the present invention relates to the testing of internal combustion engines during their test bench. It relates more particularly to measuring the lubricant consumption of such engines.
  • Publication JP3633926 discloses a device for measuring the oil consumption of an internal combustion engine.
  • This measuring device comprises a conduit bringing oil from an oil sump to a storage tank providing a supply of oil sucked by a pump to measuring devices.
  • This measuring device further comprises a solenoid valve, a sample collection pump, an air vent, a mass flow meter and a measuring device connected to the mass flow meter. A value of the oil mass sucked into the air is measured by the flow meter, the engine oil consumption is then displayed.
  • This device for measuring the oil consumption of an internal combustion engine operates with two pumps. A first to suck oil from the motor housing to the storage tank, and a second pump to take the sample to be measured.
  • this device comprises two oil circulation paths, one bringing the lubricating liquid to the intermediate reservoir, the other bringing the oil to the measuring instruments. And two separate measurement elements.
  • the device of the prior art does not make it possible to carry out the oil draining and replenishment of the engine during a test.
  • the present invention proposes to overcome the drawbacks of the prior art, by providing a method and a device for measuring the oil consumption of an internal combustion engine, which is particularly simple to install and to use without requiring pump to bring the oil to the measuring tank, and able to perform the draining and refilling of the engine oil during a test.
  • the invention proposes a method for measuring the quantity of oil consumed by an internal combustion engine comprising an oil sump for its supply of lubricating liquid, characterized in that it comprises at least the steps consisting in :
  • - b) measure and memorize a first value of a mass of oil contained in the measuring tank.
  • - c) subject the oil contained in the measuring tank to the thrust of a gas under pressure causing the oil to rise from the measuring tank to the oil sump.
  • the oil consumption of the internal combustion engine is obtained by realizing the difference between the first and the second value of the mass of oil contained in the measuring tank.
  • the present invention furthermore proposes a device for measuring the oil consumption of an internal combustion engine equipped with an oil sump, comprising a hermetic measuring tank, at least a first duct bringing the oil of the oil sump oil to the measuring tank, means for measuring a characteristic quantity of the oil thus diverted and an electronic control unit able to control different effectors, for the implementation of the method previously described characterized in that it comprises:
  • a second duct provided with movable closing means, connecting said measuring tank to a source of pressurized gas, the opening of which causes the lubricating liquid present in the measuring tank to rise towards the oil sump of the engine under test; this being then subjected to the thrust of the gas under pressure.
  • the measuring tank is positioned below the oil sump of the engine whose oil consumption is measured.
  • closure means of the first conduit are constituted by a solenoid valve and the closure means of the second conduit are constituted by a pneumatic valve.
  • the means for measuring a characteristic of the oil is a scale on which the measuring reservoir is placed.
  • the device comprises a conduit for discharging the used lubricating liquid from the oil sump provided with an evacuation valve allowing or preventing the passage of used oil from the sump to a recovery tank.
  • the device according to the invention also comprises a supply duct for fresh lubricating liquid from a supply tank, said duct being provided with a valve allowing or preventing the circulation of the lubricating liquid from the storage tank to the measuring tank.
  • FIG. 1 a schematic view of the measuring device according to the invention connected to the casing of FIG. engine oil whose lubricant consumption is to be measured
  • FIG. 2 a schematic view of the device of FIG. 1 equipped with means making it possible to carry out the emptying and automatic replenishment of the engine oil.
  • FIG. 1 there is an oil pan for the recovery of the lubricating liquid of the various elements of the engine.
  • a discharge orifice of the lubricating liquid 8 is arranged in the lower part of the casing 7.
  • This orifice 22 communicates with a solenoid valve 9 allowing or prohibiting the passage of lubricant 8 to the measuring device.
  • the lubricating liquid 8 moving from the oil sump of the engine to the measurement reservoir encounters, from upstream to downstream, the following elements connected to each other: a solenoid valve 9 allowing or prohibiting the passage of the lubricant 8 a first intermediate conduit 1 1, a quick coupling socket 13, a second conduit 15 bringing the lubricating liquid to the measuring tank and - a measuring tank 10.
  • the measuring tank is in contact with a scale 23.
  • the measuring tank is further connected to a source of pressurized gas (not shown) via a pneumatic valve 19, a pressure regulator 21 and a conduit 24.
  • the device further comprises a programmed electronic control unit able to control the different effectors of the device according to the invention in order to carry out the measurement sequences.
  • the operator in charge of the test fills the oil tank 7 with the low level increased by a certain value (advantageously 0.5 liter).
  • the engine is then installed on the test stand and the operator connects the oil sump to the device according to the invention by virtue of the quick coupling socket 13.
  • the engine is then started up for a predetermined duration.
  • the engine is stopped and the drain solenoid valve 9 controlled by the control unit opens allowing the lubricating liquid to fill the measuring tank 17.
  • the whole is weighed by the balance 23 and this value is recorded.
  • the pneumatic valve 19 opens and the lubricating liquid contained in the measuring tank 17 is brought into contact with air under pressure. This causes the oil to rise in the engine oil sump.
  • the solenoid valve 9 is closed and the pneumatic valve 19 is positioned to allow the evacuation of the compressed air contained in the measuring tank 17.
  • the motor is restarted for a predetermined time.
  • the engine is stopped and a new weighing according to the preceding steps is carried out.
  • the solenoid valve 9 is open and the oil flows through the gravity to the reservoir 17. A second measurement of the mass of the assembly is performed.
  • the oil consumption of the engine is the mass difference between two successive measurements. After this second measurement, the oil is returned to the engine.
  • Figure 2 shows an embodiment for performing a drain and automatic replenishment of the engine oil during testing.
  • a fresh lubricant supply conduit 25 equipped with a valve 27 for closing it.
  • the conduit 25 is connected at one end to a reservoir (not shown) filled with fresh lubricating liquid and at the other end to the measuring reservoir 17.
  • Another drain conduit 29 of the oil sump communicates with the orifice 22 of the oil sump at one of its ends and with a used lubricant liquid recovery tank 33 at the other end thereof.
  • This duct 29 is also equipped with a shut-off valve 31.
  • the electronic control unit controls the opening of the emptying valve 31 and the liquid flows out of the casing. oil to the recovery tank 33.
  • the drain valve 31 After complete emptying of the oil sump 7, the drain valve 31 is closed.
  • the electronic control unit controls the opening of the supply valve 25 and the fresh lubricating liquid contained in the supply tank flows into the measuring tank 17. When the amount of fresh lubricating liquid is sufficient the valve supply 27 is closed.
  • the pre-programmed control unit then controls the opening of the solenoid valve 9 and then the pneumatic valve 19.
  • the lubricating liquid contained in the measuring tank 17 is brought into contact with air under pressure. This causes the oil to rise in the engine oil sump.
  • the solenoid valve 9 is closed and The pneumatic valve is positioned to allow the evacuation of the compressed air contained in the measuring tank 17.
  • the measurement, the emptying and the replenishment of fresh lubricating liquid are thus carried out without the intervention of an operator, which avoids the mobilization of a resource and authorizes the performance of a continuous test.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)

Abstract

The invention concerns a method for measuring the amount of oil consumed by an internal combustion engine comprising an oil pan (7) for supplying same with lubricating fluid, characterized in that it includes the following steps: a) causing the gravitational flow of the oil (8) contained in the engine oil pan, from said oil pan towards a measuring tank; b) measuring and storing a first value of the oil volume contained in the measuring tank; c) subjecting the oil contained in the measuring tank to a pressurized gas thrust causing the rise of the oil from the measuring tank (17) towards the oil pan (7); repeating the preceding steps at least once so as to obtain a second value of the oil volume contained in the tank.

Description

PROCEDE ET DISPOSITIF DE MESURE METHOD AND DEVICE FOR MEASURING

AUTOMATIQUE DE LA CONSOMMATION EN HUILEAUTOMATIC OIL CONSUMPTION

D'UN MOTEUR A COMBUSTION INTERNE ET DEOF AN INTERNAL COMBUSTION ENGINE AND OF

VIDANGE DUDIT MOTEUR.DRAINING THE ENGINE.

La présente invention se rapporte aux tests des moteurs à combustion interne lors de leur passage au banc d'essais. Elle concerne plus particulièrement la mesure de la consommation en lubrifiant de tels moteurs. La publication JP3633926 divulgue un dispositif de mesure de la consommation en huile d'un moteur à combustion interne. Ce dispositif de mesure comprend un conduit amenant l'huile d'un carter d'huile vers un réservoir de stockage fournissant une réserve d'huile aspirée par une pompe à des appareils de mesure. Ce dispositif de mesure comprend en outre une électrovanne, une pompe de prélèvement d'échantillons, un purgeur d'air, un débitmètre massique et un appareil de mesure connecté au débitmètre massique. Une valeur de la masse d'huile aspirée purgée en air, est mesurée par le débitmètre, la consommation en huile du moteur est ensuite affichée.The present invention relates to the testing of internal combustion engines during their test bench. It relates more particularly to measuring the lubricant consumption of such engines. Publication JP3633926 discloses a device for measuring the oil consumption of an internal combustion engine. This measuring device comprises a conduit bringing oil from an oil sump to a storage tank providing a supply of oil sucked by a pump to measuring devices. This measuring device further comprises a solenoid valve, a sample collection pump, an air vent, a mass flow meter and a measuring device connected to the mass flow meter. A value of the oil mass sucked into the air is measured by the flow meter, the engine oil consumption is then displayed.

Ce dispositif de mesure de la consommation en huile d'un moteur à combustion interne fonctionne avec deux pompes. Une première pour aspirer l'huile du carter du moteur au réservoir de stockage, et une seconde pompe pour le prélèvement de l'échantillon à mesurer. De plus ce dispositif comporte deux trajets de circulations de l'huile, l'un amenant le liquide lubrifiant au réservoir intermédiaire, l'autre amenant l'huile aux instruments de mesure. Et deux éléments de mesure distincts. Enfin le dispositif de l'art antérieur ne permet pas de réaliser la vidange et la réalimentation en huile du moteur au cours d'un test. La présente invention se propose de remédier aux inconvénients de l'art antérieur, en fournissant un procédé et un dispositif de mesure de la consommation en huile d'un moteur à combustion interne, particulièrement simple d'installation et d'utilisation ne requérant pas de pompe pour amener l'huile vers le réservoir de mesure, et capable de réaliser la vidange et la réalimentation en huile du moteur au cours d'un essais.This device for measuring the oil consumption of an internal combustion engine operates with two pumps. A first to suck oil from the motor housing to the storage tank, and a second pump to take the sample to be measured. In addition, this device comprises two oil circulation paths, one bringing the lubricating liquid to the intermediate reservoir, the other bringing the oil to the measuring instruments. And two separate measurement elements. Finally, the device of the prior art does not make it possible to carry out the oil draining and replenishment of the engine during a test. The present invention proposes to overcome the drawbacks of the prior art, by providing a method and a device for measuring the oil consumption of an internal combustion engine, which is particularly simple to install and to use without requiring pump to bring the oil to the measuring tank, and able to perform the draining and refilling of the engine oil during a test.

Dans ce but l'invention propose un procédé de mesure de la quantité d'huile consommée par un moteur à combustion interne comportant un carter d'huile pour son alimentation en liquide de lubrification caractérisé en ce qu'il comporte au moins les étapes consistant à :For this purpose, the invention proposes a method for measuring the quantity of oil consumed by an internal combustion engine comprising an oil sump for its supply of lubricating liquid, characterized in that it comprises at least the steps consisting in :

- a) provoquer l'écoulement par gravitation de l'huile contenue dans le carter d'huile du moteur, dudit carter vers un réservoir de mesure,a) causing the gravitational flow of the oil contained in the engine oil sump, from said housing to a measuring tank,

- b) mesurer et mémoriser une première valeur d'une masse d'huile contenue dans le réservoir de mesure. - c) soumettre l'huile contenue dans le réservoir de mesure à la poussée d'un gaz sous pression provoquant la remontée de l'huile en provenance du réservoir de mesure vers le carter d'huile.- b) measure and memorize a first value of a mass of oil contained in the measuring tank. - c) subject the oil contained in the measuring tank to the thrust of a gas under pressure causing the oil to rise from the measuring tank to the oil sump.

- d) répéter au moins une fois les étapes précédentes afin d'obtenir une seconde valeur de la masse d'huile contenue dans le réservoir. Avantageusement, la consommation en huile du moteur à combustion interne est obtenue en réalisant la différence entre la première et la seconde valeur de la masse d'huile contenue dans le réservoir de mesure.- d) repeat at least once the previous steps to obtain a second value of the mass of oil contained in the tank. Advantageously, the oil consumption of the internal combustion engine is obtained by realizing the difference between the first and the second value of the mass of oil contained in the measuring tank.

La présente invention propose en outre un dispositif de mesure de la consommation en huile d'un moteur à combustion interne muni d'un carter d'huile, comportant un réservoir de mesure hermétique, au moins un premier conduit amenant l'huile du carter d'huile au réservoir de mesure, des moyens de mesure d'une grandeur caractéristique de l'huile ainsi déviée et une unité de contrôle électronique apte à piloter différents effecteurs, pour la mise en œuvre du procédé précédemment décrit caractérisé en ce qu'il comporte :The present invention furthermore proposes a device for measuring the oil consumption of an internal combustion engine equipped with an oil sump, comprising a hermetic measuring tank, at least a first duct bringing the oil of the oil sump oil to the measuring tank, means for measuring a characteristic quantity of the oil thus diverted and an electronic control unit able to control different effectors, for the implementation of the method previously described characterized in that it comprises:

- des moyens d'obturation mobiles du premier conduit dont l'ouverture et la gravitation provoquent l'écoulement de l'huile du carter vers le réservoir de mesure et,- Mobile shutter means of the first conduit whose opening and gravitation cause the flow of oil from the housing to the measuring tank and,

- un second conduit muni de moyens d'obturation mobiles, reliant ledit réservoir de mesure à une source de gaz sous pression, dont l'ouverture provoque la remontée du liquide lubrifiant présent dans le réservoir de mesure vers le carter d'huile du moteur testé, celui-ci étant alors soumis à la poussée du gaz sous pression. Avantageusement, le réservoir de mesure est positionné en dessous du carter d'huile du moteur dont on mesure la consommation en huile.a second duct provided with movable closing means, connecting said measuring tank to a source of pressurized gas, the opening of which causes the lubricating liquid present in the measuring tank to rise towards the oil sump of the engine under test; this being then subjected to the thrust of the gas under pressure. Advantageously, the measuring tank is positioned below the oil sump of the engine whose oil consumption is measured.

Avantageusement, les moyens d'obturation du premier conduit sont constitués par une électrovanne et les moyens d'obturation du second conduit sont constitués par une vanne pneumatique.Advantageously, the closure means of the first conduit are constituted by a solenoid valve and the closure means of the second conduit are constituted by a pneumatic valve.

Selon une caractéristique de l'invention, le moyen de mesures d'une caractéristique de l'huile est une balance sur laquelle est posée le réservoir de mesure. Selon une autre caractéristique de l'invention, le dispositif comporte un conduit d'évacuation du liquide lubrifiant usagé en provenance du carter d'huile muni d'une vanne d'évacuation autorisant ou interdisant le passage de l'huile usagée du carter vers une cuve de récupération.According to one characteristic of the invention, the means for measuring a characteristic of the oil is a scale on which the measuring reservoir is placed. According to another characteristic of the invention, the device comprises a conduit for discharging the used lubricating liquid from the oil sump provided with an evacuation valve allowing or preventing the passage of used oil from the sump to a recovery tank.

De plus le dispositif selon l'invention comporte également un conduit d'alimentation en liquide lubrifiant frais en provenance d'un réservoir d'alimentation, ledit conduit étant muni d'une vanne autorisant ou interdisant la circulation du liquide lubrifiant du réservoir de stockage vers le réservoir de mesure. D'autres caractéristiques et avantages apparaîtront à la lecture détaillée d'un mode de réalisation non limitatif de la présente invention, faîte en référence aux figures qui représentent : figure 1 : une vue schématique du dispositif de mesure selon l'invention connecté au carter d'huile du moteur dont on veut mesurer la consommation en lubrifiant, figure 2 : une vue schématique du dispositif de la figure 1 équipé des moyens permettant la réalisation de la vidange et du réapprovisionnement automatique en huile du moteur. En se référant à la figure 1 on observe un carter d'huile pour la récupération du liquide de lubrification des différents éléments du moteur. Dans la partie inférieur du carter 7, un orifice d'évacuation du liquide lubrifiant 8 est aménagé. Cet orifice 22 communique avec une électrovanne 9 autorisant ou interdisant le passage du lubrifiant 8 vers le dispositif de mesure.In addition, the device according to the invention also comprises a supply duct for fresh lubricating liquid from a supply tank, said duct being provided with a valve allowing or preventing the circulation of the lubricating liquid from the storage tank to the measuring tank. Other characteristics and advantages will become apparent on reading a detailed non-limiting embodiment of the present invention, with reference to the figures which represent: FIG. 1: a schematic view of the measuring device according to the invention connected to the casing of FIG. engine oil whose lubricant consumption is to be measured, FIG. 2: a schematic view of the device of FIG. 1 equipped with means making it possible to carry out the emptying and automatic replenishment of the engine oil. Referring to Figure 1 there is an oil pan for the recovery of the lubricating liquid of the various elements of the engine. In the lower part of the casing 7, a discharge orifice of the lubricating liquid 8 is arranged. This orifice 22 communicates with a solenoid valve 9 allowing or prohibiting the passage of lubricant 8 to the measuring device.

Dans le mode de réalisation de la figure 1 , le liquide lubrifiant 8 se déplaçant du carter d'huile du moteur vers le réservoir de mesure rencontre d'amont en aval les éléments suivant connectés les uns aux autres : une électrovanne 9 autorisant ou interdisant le passage du lubrifiant 8 un premier conduit intermédiaire 1 1 , une prise de raccord rapide 13, un second conduit 15 amenant le liquide lubrifiant jusqu'au réservoir de mesure et, - un réservoir de mesure 10.In the embodiment of FIG. 1, the lubricating liquid 8 moving from the oil sump of the engine to the measurement reservoir encounters, from upstream to downstream, the following elements connected to each other: a solenoid valve 9 allowing or prohibiting the passage of the lubricant 8 a first intermediate conduit 1 1, a quick coupling socket 13, a second conduit 15 bringing the lubricating liquid to the measuring tank and - a measuring tank 10.

Le réservoir de mesure est en contact avec une balance 23. Le réservoir de mesure est en outre connecté à une source de gaz sous pression (non représentée) via une vanne pneumatique 19, un dispositif de régulation de pression 21 et un conduit 24. Le dispositif comporte en outre une unité de contrôle électronique programmée apte à commander les différents effecteurs du dispositif selon l'invention afin d'effectuer les séquences de mesure.The measuring tank is in contact with a scale 23. The measuring tank is further connected to a source of pressurized gas (not shown) via a pneumatic valve 19, a pressure regulator 21 and a conduit 24. The device further comprises a programmed electronic control unit able to control the different effectors of the device according to the invention in order to carry out the measurement sequences.

Afin de réaliser une mesure automatique de la consommation en huile du moteur, l'opérateur en charge de l'essai remplit d'huile le carter 7 au niveau bas augmenté d'une certaine valeur (avantageusement 0,5 litre).In order to perform an automatic measurement of the engine oil consumption, the operator in charge of the test fills the oil tank 7 with the low level increased by a certain value (advantageously 0.5 liter).

Le moteur est ensuite installé sur le banc d'essais et l'opérateur connecte le carter d'huile au dispositif selon l'invention grâce à la prise de raccord rapide 13. Le moteur est ensuite mis en route durant une durée prédéterminée. A la fin de cette durée, le moteur est stoppé et l'électrovanne de vidange 9 pilotée par l'unité de contrôle s'ouvre laissant le liquide lubrifiant remplir le réservoir de mesure 17. Lorsque la totalité du liquide lubrifiant a été transvasée du carter d'huile vers le réservoir de mesure 17, l'ensemble est pesé par la balance 23 et cette valeur est enregistrée.The engine is then installed on the test stand and the operator connects the oil sump to the device according to the invention by virtue of the quick coupling socket 13. The engine is then started up for a predetermined duration. At the end of this period, the engine is stopped and the drain solenoid valve 9 controlled by the control unit opens allowing the lubricating liquid to fill the measuring tank 17. When all the lubricating liquid has been transferred from the crankcase of oil to the measuring tank 17, the whole is weighed by the balance 23 and this value is recorded.

Après cette étape, la vanne pneumatique 19 s'ouvre et le liquide lubrifiant contenu dans le réservoir de mesure 17 est mis en contact avec de l'air sous pression. Ceci provoque la remontée de l'huile dans le carter d'huile du moteur. Après le refoulement complet de l'huile précédemment contenue dans le réservoir de mesure 17 vers le carter 7, l'électrovanne 9 est fermée et la vanne pneumatique 19 est positionnée pour autoriser l'évacuation de l'air comprimé contenu dans le réservoir de mesure 17.After this step, the pneumatic valve 19 opens and the lubricating liquid contained in the measuring tank 17 is brought into contact with air under pressure. This causes the oil to rise in the engine oil sump. After the complete discharge of the oil previously contained in the measuring tank 17 towards the casing 7, the solenoid valve 9 is closed and the pneumatic valve 19 is positioned to allow the evacuation of the compressed air contained in the measuring tank 17.

Le moteur est remis en fonctionnement pendant une durée prédéterminée. A la fin de ce cycle de fonctionnement, le moteur est stoppé et une nouvelle pesée conforme aux étapes précédentes est réalisée.The motor is restarted for a predetermined time. At the end of this operating cycle, the engine is stopped and a new weighing according to the preceding steps is carried out.

L'électrovanne 9 est ouverte et l'huile coule par grâce à la gravité vers le réservoir 17. Une seconde mesure de la masse de l'ensemble est réalisée.The solenoid valve 9 is open and the oil flows through the gravity to the reservoir 17. A second measurement of the mass of the assembly is performed.

La consommation en huile du moteur est donc l'écart de masse entre deux mesures successives. Après cette seconde mesure l'huile est de nouveau renvoyée vers le moteur.The oil consumption of the engine is the mass difference between two successive measurements. After this second measurement, the oil is returned to the engine.

La figure 2 présente un mode de réalisation permettant de réaliser une vidange et un réapprovisionnement automatique de l'huile du moteur en cours d'essais.Figure 2 shows an embodiment for performing a drain and automatic replenishment of the engine oil during testing.

Au dispositif précédemment décrit a été ajouté, pour ce mode de réalisation, un conduit d'approvisionnement 25 en lubrifiant frais équipé d'une vanne 27 permettant de l'obturer. Le conduit 25 est relié à l'une de ses extrémités à un réservoir (non représenté) rempli de liquide lubrifiant frais et à l'autre de ses extrémité au réservoir de mesure 17.To the device previously described has been added, for this embodiment, a fresh lubricant supply conduit 25 equipped with a valve 27 for closing it. The conduit 25 is connected at one end to a reservoir (not shown) filled with fresh lubricating liquid and at the other end to the measuring reservoir 17.

Un autre conduit de vidange 29 du carter d'huile communique avec l'orifice 22 du carter d'huile à l'une de ses extrémité et avec une cuve de récupération 33 de liquide lubrifiant usagé à l'autre de ses extrémités. Ce conduit 29 est également équipé d'une vanne d'obturation 31. Lorsque le liquide lubrifiant du moteur est usagé, l'unité de contrôle électronique commande l'ouverture de la vanne de vidange 31 et le liquide s'écoule du carter d'huile jusqu'à la cuve de récupération 33.Another drain conduit 29 of the oil sump communicates with the orifice 22 of the oil sump at one of its ends and with a used lubricant liquid recovery tank 33 at the other end thereof. This duct 29 is also equipped with a shut-off valve 31. When the lubricating liquid of the engine is used, the electronic control unit controls the opening of the emptying valve 31 and the liquid flows out of the casing. oil to the recovery tank 33.

Après la vidange totale du carter d'huile 7, la vanne de vidange 31 est fermée. L'unité de contrôle électronique commande l'ouverture de la vanne d'approvisionnement 25 et le liquide lubrifiant frais contenu dans le réservoir d'approvisionnement s'écoule dans le réservoir de mesure 17. Lorsque la quantité de liquide lubrifiant frais est suffisante la vanne d'approvisionnement 27 se referme.After complete emptying of the oil sump 7, the drain valve 31 is closed. The electronic control unit controls the opening of the supply valve 25 and the fresh lubricating liquid contained in the supply tank flows into the measuring tank 17. When the amount of fresh lubricating liquid is sufficient the valve supply 27 is closed.

L'unité de contrôle préprogrammée commande alors l'ouverture de l'électrovanne 9 puis de la vanne pneumatique 19. Le liquide lubrifiant contenu dans le réservoir de mesure 17 est mis en contact avec de l'air sous pression. Ceci provoque la remontée de l'huile dans le carter d'huile du moteur. Après le refoulement complet de l'huile précédemment contenue dans le réservoir de mesure 17 vers le carter 7, l'électrovanne 9 est fermée et Ia vanne pneumatique est positionnée pour autoriser l'évacuation de l'air comprimé contenu dans le réservoir de mesure 17.The pre-programmed control unit then controls the opening of the solenoid valve 9 and then the pneumatic valve 19. The lubricating liquid contained in the measuring tank 17 is brought into contact with air under pressure. This causes the oil to rise in the engine oil sump. After the complete discharge of the oil previously contained in the measuring tank 17 towards the casing 7, the solenoid valve 9 is closed and The pneumatic valve is positioned to allow the evacuation of the compressed air contained in the measuring tank 17.

La mesure, la vidange et le réapprovisionnement en liquide lubrifiant frais sont ainsi réalisés sans intervention d'un opérateur ce qui est évite la mobilisation d'une ressource et autorise la réalisation de test en continue. The measurement, the emptying and the replenishment of fresh lubricating liquid are thus carried out without the intervention of an operator, which avoids the mobilization of a resource and authorizes the performance of a continuous test.

Claims

REVENDICATIONS 1- Procédé de mesure de la quantité d'huile consommée par un moteur à combustion interne comportant un carter d'huile (7) pour son alimentation en liquide de lubrification caractérisé en ce qu'il comporte au moins les étapes consistant à :A method for measuring the amount of oil consumed by an internal combustion engine comprising an oil sump (7) for its supply of lubricating liquid, characterized in that it comprises at least the steps consisting of: - a) provoquer l'écoulement par gravitation de l'huile (8) contenue dans le carter d'huile du moteur, dudit carter vers un réservoir de mesure,a) causing the gravitational flow of the oil (8) contained in the engine oil sump, from said housing to a measuring tank, - b) mesurer et mémoriser une première valeur de la masse d'huile contenue dans le réservoir de mesure,b) measuring and storing a first value of the mass of oil contained in the measuring tank, - c) soumettre l'huile contenue dans le réservoir de mesure à la poussée d'un gaz sous pression provoquant la remontée de l'huile en provenance du réservoir de mesure (17) vers le carter d'huile (7),- c) subjecting the oil contained in the measuring tank to the thrust of a gas under pressure causing the oil to rise from the measuring tank (17) to the oil sump (7), - d) répéter au moins une fois les étapes précédentes afin d'obtenir une seconde valeur de la masse d'huile contenue dans le réservoir.- d) repeat at least once the previous steps to obtain a second value of the mass of oil contained in the tank. 2 Procédé de mesure selon la revendication 1 caractérisé en ce que la consommation en huile du moteur à combustion interne est obtenue en réalisant la différence entre la première et la seconde valeur de masse d'huile contenue dans le réservoir de mesure.2 Measuring method according to claim 1 characterized in that the oil consumption of the internal combustion engine is obtained by realizing the difference between the first and the second mass value of oil contained in the measuring tank. 3 Dispositif de mesure de la consommation en huile d'un moteur à combustion interne muni d'un carter d'huile (7), comportant un réservoir de mesure hermétique (17), au moins un premier conduit (11) amenant l'huile du carter d'huile (7) au réservoir de mesure (17), des moyens de mesure (23) d'une grandeur caractéristique de l'huile et une unité de contrôle électronique apte à piloter différents effecteurs du dispositif caractérisé en ce qu'il comporte : - des moyens d'obturation mobiles (9) du premier conduit (11) dont l'ouverture et la gravitation provoquent l'écoulement de l'huile (8) du carter (7) vers le réservoir dé mesure (17) et, - un second conduit (19) muni de moyens d'obturation mobiles, reliant ledit réservoir de mesure (17) à une source de gaz sous pression, dont l'ouverture provoque la remontée du liquide lubrifiant présent dans le réservoir de mesure vers le carter d'huile du moteur testé, celui-ci étant alors soumis à la poussée du gaz sous pression.3 Device for measuring the oil consumption of an internal combustion engine equipped with an oil sump (7), comprising an airtight measuring reservoir (17), at least a first duct (11) bringing the oil from the oil sump (7) to the measuring tank (17), measuring means (23) of a characteristic quantity of the oil and an electronic control unit able to control different effectors of the device, characterized in that it comprises : mobile closing means (9) of the first duct (11) whose opening and gravitation cause the flow of the oil (8) from the casing (7) to the measurement reservoir (17) and, - a second duct (19) provided with movable closing means, connecting said measuring tank (17) to a source of gas under pressure, the opening of which causes the lubricating liquid present in the measuring tank to rise towards the casing engine oil tested, it is then subjected to the thrust of the gas under pressure. 4 Dispositif de mesure de la consommation en huile d'un moteur selon la revendication précédente caractérisé en ce que le réservoir de mesure (17) est positionné en dessous du carter d'huile du moteur dont on mesure la consommation en huile.4 Device for measuring the oil consumption of an engine according to the preceding claim characterized in that the measuring tank (17) is positioned below the oil sump of the engine which is measured oil consumption. 5 Dispositif de mesure de la consommation en huile d'un moteur selon la revendication 3 ou 4, caractérisé en ce que les moyens d'obturation du premier conduit sont constitués par une électrovanne (9).5 device for measuring the oil consumption of an engine according to claim 3 or 4, characterized in that the closure means of the first conduit are constituted by a solenoid valve (9). 6 Dispositif de mesure de la consommation en huile d'un moteur selon l'une des revendications 3 à 5 caractérisé en ce que les moyens d'obturation du second conduit sont constitués par une vanne pneumatique (19).6 device for measuring the oil consumption of an engine according to one of claims 3 to 5 characterized in that the closure means of the second conduit are constituted by a pneumatic valve (19). 7 Dispositif de mesure de la consommation en huile d'un moteur selon l'une des revendications 3 à 6 caractérisé en ce que le moyen de mesures d'une caractéristique de l'huile est une balance (23) sur laquelle est posée le réservoir de mesure. Dispositif de mesure de la consommation en huile d'un moteur selon l'une des revendications 3 à 7 caractérisé en ce qu'il comporte un conduit d'évacuation (29) du liquide lubrifiant usagé en provenance du carter d'huile vers une cuve de récupération (33), ledit conduit étant muni d'une vanne d'évacuation (31) autorisant ou interdisant le passage de l'huile usagée du carter vers ladite cuve de récupération (33).7 Device for measuring the oil consumption of an engine according to one of claims 3 to 6 characterized in that the means for measuring a characteristic of the oil is a balance (23) on which the reservoir is placed measurement. Device for measuring the oil consumption of an engine according to one of claims 3 to 7, characterized in that it comprises a discharge duct (29) of the used lubricating liquid from the oil sump to a tank recovery valve (33), said duct being provided with a discharge valve (31) allowing or preventing the passage of used oil from the housing to said recovery tank (33). Dispositif de mesure de la consommation en huile d'un moteur selon l'une des revendications 3 à 8 caractérisé en ce qu'il comporte un conduit d'alimentation (25) en liquide lubrifiant frais en provenance d'un réservoir d'alimentation, ledit conduit étant muni d'une vanne (31) autorisant ou interdisant la circulation du liquide lubrifiant frais du réservoir de stockage vers le réservoir de mesure. Device for measuring the oil consumption of an engine according to one of claims 3 to 8, characterized in that it comprises a supply duct (25) in fresh lubricating liquid from a supply tank, said duct being provided with a valve (31) allowing or preventing the flow of fresh lubricating liquid from the storage tank to the measuring tank.
EP06847162A 2005-12-22 2006-12-18 Method and device for automatically measuring oil consumption of an internal combustion engine and for changing the oil of said engine Withdrawn EP1963795A1 (en)

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FR0553986A FR2895512B1 (en) 2005-12-22 2005-12-22 METHOD AND DEVICE FOR AUTOMATICALLY MEASURING THE OIL CONSUMPTION OF AN INTERNAL COMBUSTION ENGINE AND DRAINING SAID ENGINE
PCT/FR2006/051372 WO2007074279A1 (en) 2005-12-22 2006-12-18 Method and device for automatically measuring oil consumption of an internal combustion engine and for changing the oil of said engine

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EP1963795A1 true EP1963795A1 (en) 2008-09-03

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US7946159B2 (en) 2011-05-24
JP4942761B2 (en) 2012-05-30
US20090120176A1 (en) 2009-05-14
FR2895512A1 (en) 2007-06-29
WO2007074279A1 (en) 2007-07-05

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