EP0936347A1 - Device for increasing the rate of temperature rise of the oil in a combustion engine - Google Patents

Device for increasing the rate of temperature rise of the oil in a combustion engine Download PDF

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Publication number
EP0936347A1
EP0936347A1 EP99400340A EP99400340A EP0936347A1 EP 0936347 A1 EP0936347 A1 EP 0936347A1 EP 99400340 A EP99400340 A EP 99400340A EP 99400340 A EP99400340 A EP 99400340A EP 0936347 A1 EP0936347 A1 EP 0936347A1
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EP
European Patent Office
Prior art keywords
oil
tarpaulin
engine
cover
increasing
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.)
Granted
Application number
EP99400340A
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German (de)
French (fr)
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EP0936347B1 (en
Inventor
Gabriel Plassat
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
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Automobiles Peugeot SA
Automobiles Citroen SA
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Publication of EP0936347A1 publication Critical patent/EP0936347A1/en
Application granted granted Critical
Publication of EP0936347B1 publication Critical patent/EP0936347B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant
    • F01M5/007—Thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V40/00—Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies
    • F24V40/10—Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies the fluid passing through restriction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
    • F01M5/021—Conditioning lubricant for aiding engine starting, e.g. heating by heating
    • F01M2005/023—Oil sump with partition for facilitating heating of oil during starting

Definitions

  • the invention relates to a device for increasing the engine oil temperature rise speed.
  • the invention applies to vehicles, in particular motor vehicles.
  • Vehicle fuel consumption is a function in particular friction in the engine and therefore also the engine lubricating oil temperature.
  • consumption and engine wear is high as long as the engine and oil are not reheated to their optimum temperature of operation.
  • this type of device has the disadvantage of being expensive and increase battery consumption.
  • the document FR 2 423 632 teaches a device for adjusting the temperature of the lubricating oil engine with a main oil sump containing a oil collector.
  • the collector which has a volume lower than the main sump, collects the oil that has circulated in the engine.
  • the manifold is connected to the main casing by means of a thermostatic valve.
  • the suction point of the engine oil pump is connected, according to valve position, either with the manifold when the oil temperature is low, either with the oil pan when the operating temperature is reached.
  • Document FR 2 427 472 describes a motor for motor vehicle comprising an oil pan subdivided into two communicating rooms, each equipped with a suction line.
  • a first bedroom or bedroom main contains the secondary chamber which has a volume lower than that of this first room.
  • a distributor at thermostatic control connects the pipes of suction to a common pipe. When the oil temperatures are low, the distributor makes communicate the common pipe with the second bedroom. When oil temperatures are high, the distributor communicates the common pipe with the first bedroom, which first bedroom is exposed to sweeping air from the running vehicle to cool the oil it contains.
  • this device is also complex, expensive and unreliable because it requires two suction lines and a thermostatic valve ensuring the selective connection of these pipes with a common pipeline.
  • An object of the present invention is to provide a device for increasing the speed of climb engine oil temperature overcoming all or part of disadvantages of the prior art noted above.
  • the device increase in the rate of temperature rise by engine oil has a sump containing engine lubrication, an oil collecting tank having circulated in the engine, the tarpaulin having a volume less than sump, an oil pump with a suction point located in the cover, the cover comprising at least one orifice of communication of the oil contained in the crankcase with the oil contained in the tarpaulin, means creating a loss load on the crankcase oil circulation circuit to the cover being provided inside and / or outside the tarpaulin, to ensure, during start-ups, a re-aspiration preferential warmer oil from the tarpaulin that has circulated in the engine, while allowing the circulation of oil from casing towards the suction point in the event of a drop in level oil in the tarpaulin and / or temperature homogenization oil in the tarpaulin and in the crankcase.
  • the means creating a loss load on the crankcase oil circulation circuit to the cover comprises at least one deflecting wall situated inside or outside the tarpaulin, and near the orifice, so as to form a baffle for the oil in its crankcase circulation to the suction point.
  • the cover is located in the casing, the means creating a pressure drop on the circuit oil flow from the crankcase to the tarpaulin 2 are located at level and / or near the orifice.
  • the means creating a loss load on the crankcase oil circulation circuit to the cover has a mesh attached to the orifice.
  • the setting hole communication of the oil contained in the sump with the oil contained in the tarpaulin is formed in the wall constituting the tarpaulin bottom.
  • the setting hole communication of the oil contained in the sump with the oil contained in the tarpaulin is formed in one of the walls side of the sheet, that is to say in one of the walls substantially perpendicular to the bottom of the sheet.
  • the means creating a loss load on the crankcase oil circulation circuit to the cover has two deflecting walls located in the tarpaulin, close to the orifice, and substantially perpendicular to the bottom of the sheet, to form a baffle for the oil in its circulation circuit from the crankcase to the suction point.
  • the device for increasing the rate of climb engine oil temperature comprises a sump 1 containing the engine lubricating oil and a cover 2 collector, located in the casing 1 and intended for recover the oil circulating in the engine 4.
  • the oil pan 1 is fixed to the part bottom of the cylinder block 11.
  • the collecting cover 2 which has a volume lower than that of the oil pan 1, is immersed in the latter's oil reserve.
  • Tarpaulin 2 collector is fixed on the lower part of the cylinder block 11 by through, for example, a flange 12 which covers the flange 13 for fixing the oil sump 1. In this way, any the oil R which flows from the engine 4 is recovered by the cover 2.
  • the engine lubrication system 4 includes a oil pump 3 with a suction strainer 5 located in the sheet 2.
  • the sheet 2 has an orifice 6 for setting communication of the oil contained in the crankcase 1 with the oil contained in the sheet 2.
  • the port 6 of communication crankcase oil 1 with tarpaulin oil 2 is formed in one 10 of the side walls of the sheet 2. That is to say that the orifice 6 is formed in one of the walls substantially perpendicular to the bottom 9 of the sheet 2.
  • Means 7, 8A, 8B creating a pressure drop on the circuit B for circulating the oil from the sump 1 to the cover 2 are provided at the opening 6 and inside the tarpaulin 2, to ensure preferential re-aspiration of the oil recovered in tarpaulin 2 during, in particular, starts.
  • These means creating a pressure drop on circuit B of circulation of oil from sump 1 to tank 2 include two deflector walls 8A, 8B located in the cover 2 and one mesh 7 added to hole 6.
  • the two deflecting walls 8A, 8B are substantially perpendicular to the bottom 9 of the sheet 2 and are located at near orifice 6, so as to form a baffle for the oil in its circuit B of circulation of the crankcase 2 towards the point of the oil pump 3.
  • the baffle formed by the two walls 8A, 8B can be "vertical". That is to say, the two walls 8A, 8B are vertically offset so that the oil circulation circuit B from the crankcase 1 passes on the one hand between the lower edge of a first wall 8A and the bottom 9 of tarpaulin 2, and on the other hand above the second 8B wall.
  • the means 7, 8A, 8B introducing a pressure drop on the circuit B for circulating the oil from the crankcase 1 to the tarpaulin 2, however, allows the oil to flow from the sump 1 to the suction point A of the cover 2 in the event of a fall of the oil level in the tank 2 and / or homogenization of the oil temperatures in tarpaulin 2 and in sump 1. From this way any risk of damage to the lubrication of the engine with too hot oil is avoided. Similarly, when the flow rate of the pump 3 increases due to increase in engine speed oil can flow from the crankcase 1 in the cover 2 to be sucked there.
  • Figures 2 and 3 show a second mode of realization of the invention.
  • FIG. 2 only the collecting cover 2 is shown at the base of the engine 4.
  • the cover 2 collects the descents of oil C from the cylinder head and the oil descents P from the bearings, the oil collected by the cover 2 is sucked back by the pump 3.
  • Tarpaulin 2 in Figures 2 and 3 differs from that in Figure 1 by the fact that the opening 6 for placing the casing in communication 1 and of the sheet 2 is formed in the wall 9 constituting the bottom of the sheet 2.
  • the sheet 2 of Figures 2 and 3 also differs of that of FIG. 1 by the fact that it does not include any grid attached to port 6.
  • the cover 2 of FIGS. 2 and 3 constitutes a formed reservoir, seen from above, by a substantially rectangular portion which is extended, at one of its sides, by a substantially triangular portion.
  • the suction point A of the pump 3 is located substantially in the center of the portion rectangular while the orifice 6 is located substantially at the end of the triangular part which constitutes the end of the cover 2.
  • the flange 12 for fixing the cover 2 on the part lower of motor 4 forms a rim on the upper edge of the tank constituted by the cover 2.
  • the two deflecting walls 8A, 8B which are perpendicular to the bottom 9 of the sheet 2, are integral respectively of two opposite side walls of the sheet 2.
  • the two deflecting walls 8A, 8B form a "horizontal" baffle. That is to say, when flow from port 6 to suction point A, oil bypasses the free edges of the two walls 8A, 8B which are perpendicular to the bottom 9 of the sheet 2.
  • crankcase oil circulation circuit 1 to tarpaulin 2 which have been described above can be replaced by any other equivalent means.
  • these means creating a pressure drop for the oil can be arranged outside and / or inside the sheet 2 and / or at level of the orifice 6 of communication.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The engine oil is heated by passing it through a constricted orifice in the oil sump (6) and between baffle plates (8A,8B). These are contained within a chamber (2) which in turn is located within the oil sump (1). The oil pump (3) draws its supply from the chamber which retains a pool of warm oil after the engine is stopped.

Description

L'invention se rapporte à un dispositif d'augmentation de la vitesse de montée en température de l'huile moteur. L'invention s'applique aux véhicules, notamment automobiles.The invention relates to a device for increasing the engine oil temperature rise speed. The invention applies to vehicles, in particular motor vehicles.

La consommation de carburant d'un véhicule est fonction notamment des frottements dans le moteur et donc également de la température de l'huile de lubrification du moteur. Lors, par exemple, d'un démarrage à froid, la consommation et l'usure du moteur sont importantes tant que le moteur et l'huile ne sont pas réchauffés jusqu'à leur température optimale de fonctionnement. Pour résoudre ce problème, il est connu de réchauffer l'huile du carter au moyen, par exemple, d'un thermoplongeur disposé dans le carter d'huile. Cependant, ce type de dispositif a pour inconvénient d'être coûteux et d'augmenter la consommation batterie.Vehicle fuel consumption is a function in particular friction in the engine and therefore also the engine lubricating oil temperature. When, for example, from a cold start, consumption and engine wear is high as long as the engine and oil are not reheated to their optimum temperature of operation. To solve this problem, it is known to warm the crankcase oil using, for example, a immersion heater placed in the oil pan. However, this type of device has the disadvantage of being expensive and increase battery consumption.

Le document FR 2 423 632 enseigne un dispositif de réglage de la température de l'huile de lubrification d'un moteur comportant un carter principal d'huile contenant un collecteur d'huile. Le collecteur, qui a un volume inférieur au carter principal, récupère l'huile ayant circulé dans le moteur. Le collecteur est relié au carter principal au moyen d'une soupape à commande thermostatique. Le point d'aspiration de la pompe à huile du moteur est mis en communication, suivant la position de la soupape, soit avec le collecteur lorsque la température de l'huile est basse, soit avec le carter d'huile lorsque la température de fonctionnement est atteinte.The document FR 2 423 632 teaches a device for adjusting the temperature of the lubricating oil engine with a main oil sump containing a oil collector. The collector, which has a volume lower than the main sump, collects the oil that has circulated in the engine. The manifold is connected to the main casing by means of a thermostatic valve. The suction point of the engine oil pump is connected, according to valve position, either with the manifold when the oil temperature is low, either with the oil pan when the operating temperature is reached.

Cependant, ce type de dispositif est complexe, coûteux et peu fiable car il nécessite l'utilisation d'une soupape thermostatique.However, this type of device is complex, expensive and unreliable because it requires the use of a valve thermostatic.

Le document FR 2 427 472 décrit quant à lui un moteur de véhicule automobile comprenant un carter à huile subdivisé en deux chambres communiquantes et équipées chacune d'une canalisation d'aspiration. Une première chambre ou chambre principale contient la chambre secondaire qui a un volume inférieur à celui de cette première chambre. Un distributeur à commande thermostatique raccorde les canalisations d'aspiration à une canalisation commune. Lorsque les températures d'huile sont basses, le distributeur fait communiquer la canalisation commune avec la seconde chambre. Lorsque les températures de l'huile sont élevées, le distributeur fait communiquer la canalisation commune avec la première chambre, laquelle première chambre est exposée à l'air de balayage du véhicule en marche pour refroidir l'huile qu'elle contient.Document FR 2 427 472 describes a motor for motor vehicle comprising an oil pan subdivided into two communicating rooms, each equipped with a suction line. A first bedroom or bedroom main contains the secondary chamber which has a volume lower than that of this first room. A distributor at thermostatic control connects the pipes of suction to a common pipe. When the oil temperatures are low, the distributor makes communicate the common pipe with the second bedroom. When oil temperatures are high, the distributor communicates the common pipe with the first bedroom, which first bedroom is exposed to sweeping air from the running vehicle to cool the oil it contains.

Cependant, ce dispositif est également complexe, coûteux et peu fiable, car il nécessite deux canalisations d'aspiration distinctes et un distributeur à commande thermostatique assurant le raccordement sélectif de ces canalisations avec une canalisation commune.However, this device is also complex, expensive and unreliable because it requires two suction lines and a thermostatic valve ensuring the selective connection of these pipes with a common pipeline.

Un but de la présente invention est de proposer un dispositif d'augmentation de la vitesse de montée en température de l'huile moteur palliant tout ou partie des inconvénients de l'art antérieur relevés ci-dessus.An object of the present invention is to provide a device for increasing the speed of climb engine oil temperature overcoming all or part of disadvantages of the prior art noted above.

Ce but est atteint par le fait que le dispositif d'augmentation de la vitesse de montée en température de l'huile moteur comporte un carter contenant l'huile de lubrification du moteur, une bâche collectrice de l'huile ayant circulé dans le moteur, la bâche ayant un volume inférieur au carter, une pompe à huile dont le point d'aspiration est situé dans la bâche, la bâche comportant au moins un orifice de mise en communication de l'huile contenue dans le carter avec l'huile contenue dans la bâche, des moyens créant une perte de charge sur le circuit de circulation de l'huile du carter vers la bâche étant prévus à l'intérieur et/ou à l'extérieur de la bâche, pour assurer, lors des démarrages, une réaspiration préférentielle de l'huile plus chaude de la bâche qui a circulé dans le moteur, tout en permettant la circulation de l'huile du carter vers le point d'aspiration en cas de baisse du niveau d'huile dans la bâche et/ou homogénéisation des températures de l'huile dans la bâche et dans le carter. This goal is achieved by the fact that the device increase in the rate of temperature rise by engine oil has a sump containing engine lubrication, an oil collecting tank having circulated in the engine, the tarpaulin having a volume less than sump, an oil pump with a suction point located in the cover, the cover comprising at least one orifice of communication of the oil contained in the crankcase with the oil contained in the tarpaulin, means creating a loss load on the crankcase oil circulation circuit to the cover being provided inside and / or outside the tarpaulin, to ensure, during start-ups, a re-aspiration preferential warmer oil from the tarpaulin that has circulated in the engine, while allowing the circulation of oil from casing towards the suction point in the event of a drop in level oil in the tarpaulin and / or temperature homogenization oil in the tarpaulin and in the crankcase.

Selon une autre particularité les moyens créant une perte de charge sur le circuit de circulation de l'huile du carter vers la bâche comportent au moins une paroi déflectrice située dans la bâche ou à l'extérieur de celle-ci, et à proximité de l'orifice, de façon à former une chicane pour l'huile dans son circuit de circulation du carter vers le point d'aspiration.According to another particular feature, the means creating a loss load on the crankcase oil circulation circuit to the cover comprises at least one deflecting wall situated inside or outside the tarpaulin, and near the orifice, so as to form a baffle for the oil in its crankcase circulation to the suction point.

Selon une autre particularité la bâche est située dans le carter, les moyens créant une perte de charge sur le circuit de circulation de l'huile du carter vers la bâche 2 sont situés au niveau et/ou à proximité de l'orifice.According to another feature, the cover is located in the casing, the means creating a pressure drop on the circuit oil flow from the crankcase to the tarpaulin 2 are located at level and / or near the orifice.

Selon une autre particularité les moyens créant une perte de charge sur le circuit de circulation de l'huile du carter vers la bâche comportent une maille rapportée sur l'orifice.According to another particular feature, the means creating a loss load on the crankcase oil circulation circuit to the cover has a mesh attached to the orifice.

Selon une autre particularité l'orifice de mise en communication de l'huile contenue dans le carter avec l'huile contenue dans la bâche est formé dans la paroi constituant le fond de la bâche.According to another particular feature, the setting hole communication of the oil contained in the sump with the oil contained in the tarpaulin is formed in the wall constituting the tarpaulin bottom.

Selon une autre particularité l'orifice de mise en communication de l'huile contenue dans le carter avec l'huile contenue dans la bâche est formé dans l'une des parois latérales de la bâche, c'est-à-dire dans l'une des parois sensiblement perpendiculaires au fond de la bâche.According to another particular feature, the setting hole communication of the oil contained in the sump with the oil contained in the tarpaulin is formed in one of the walls side of the sheet, that is to say in one of the walls substantially perpendicular to the bottom of the sheet.

Selon une autre particularité les moyens créant une perte de charge sur le circuit de circulation de l'huile du carter vers la bâche comportent deux parois déflectrices situées dans la bâche, à proximité de l'orifice, et sensiblement perpendiculaires au fond de la bâche, pour former une chicane pour l'huile dans son circuit de circulation du carter vers le point d'aspiration.According to another particular feature, the means creating a loss load on the crankcase oil circulation circuit to the cover has two deflecting walls located in the tarpaulin, close to the orifice, and substantially perpendicular to the bottom of the sheet, to form a baffle for the oil in its circulation circuit from the crankcase to the suction point.

D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description détaillée qui va suivre, pour la compréhension de laquelle on se reportera aux dessins annexés, dans lesquels:

  • la figure 1 représente schématiquement le fonctionnement du dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon l'invention, dans un premier mode de réalisation,
  • la figure 2 représente partiellement et en perspective, une partie d'un moteur et du dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon un deuxième mode de réalisation de l'invention,
  • la figure 3 représente schématiquement et en vue de dessus, la bâche collectrice de l'huile s'écoulant du moteur du dispositif d'augmentation de la vitesse de montée en température de l'huile moteur de la figure 2.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows, for the understanding of which reference will be made to the appended drawings, in which:
  • FIG. 1 schematically represents the operation of the device for increasing the speed of temperature rise of the engine oil according to the invention, in a first embodiment,
  • FIG. 2 partially and in perspective represents a part of an engine and of the device for increasing the speed of temperature rise of the engine oil according to a second embodiment of the invention,
  • FIG. 3 shows schematically and in top view, the oil collecting tank flowing from the engine of the device for increasing the speed of temperature rise of the engine oil of FIG. 2.

L'invention va à présent être décrite en référence à la figure 1.The invention will now be described with reference to the figure 1.

Le dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon l'invention comprend un carter 1 contenant l'huile de lubrification du moteur et une bâche 2 collectrice, située dans le carter 1 et destinée à récupérer l'huile ayant circulé dans le moteur 4.The device for increasing the rate of climb engine oil temperature according to the invention comprises a sump 1 containing the engine lubricating oil and a cover 2 collector, located in the casing 1 and intended for recover the oil circulating in the engine 4.

De manière connue, le carter 1 d'huile est fixé à la partie inférieure du carter cylindre 11. La bâche 2 collectrice, qui a un volume inférieur à celui du carter 1 d'huile, est plongée dans la réserve d'huile de ce dernier. La bâche 2 collectrice est fixée sur la partie inférieure du carter cylindre 11 par l'intermédiaire, par exemple, d'une bride 12 qui recouvre la bride 13 de fixation du carter 1 d'huile. De cette façon, toute l'huile R qui s'écoule du moteur 4 est récupérée par la bâche 2.In known manner, the oil pan 1 is fixed to the part bottom of the cylinder block 11. The collecting cover 2, which has a volume lower than that of the oil pan 1, is immersed in the latter's oil reserve. Tarpaulin 2 collector is fixed on the lower part of the cylinder block 11 by through, for example, a flange 12 which covers the flange 13 for fixing the oil sump 1. In this way, any the oil R which flows from the engine 4 is recovered by the cover 2.

Le système de lubrification du moteur 4 comporte une pompe 3 à huile dont la crépine 5 d'aspiration est située dans la bâche 2. La bâche 2 comporte un orifice 6 de mise en communication de l'huile contenue dans le carter 1 avec l'huile contenue dans la bâche 2. Dans l'exemple de réalisation non limitatif de la figure 1, l'orifice 6 de mise en communication de l'huile du carter 1 avec l'huile de la bâche 2 est formé dans l'une 10 des parois latérales de la bâche 2. C'est-à-dire que l'orifice 6 est formé dans l'une des parois sensiblement perpendiculaires au fond 9 de la bâche 2.The engine lubrication system 4 includes a oil pump 3 with a suction strainer 5 located in the sheet 2. The sheet 2 has an orifice 6 for setting communication of the oil contained in the crankcase 1 with the oil contained in the sheet 2. In the example of embodiment not limiting of Figure 1, the port 6 of communication crankcase oil 1 with tarpaulin oil 2 is formed in one 10 of the side walls of the sheet 2. That is to say that the orifice 6 is formed in one of the walls substantially perpendicular to the bottom 9 of the sheet 2.

Des moyens 7, 8A, 8B créant une perte de charge sur le circuit B de circulation de l'huile du carter 1 vers la bâche 2 sont prévus au niveau de l'orifice 6 et à l'intérieur de la bâche 2, pour assurer une réaspiration préférentielle de l'huile récupérée dans la bâche 2 lors, notamment, des démarrages. Ces moyens créant une perte de charge sur le circuit B de circulation de l'huile du carter 1 vers la bâche 2 comportent deux parois 8A, 8B déflectrices situées dans la bâche 2 et une maille 7 rapportée sur l'orifice 6.Means 7, 8A, 8B creating a pressure drop on the circuit B for circulating the oil from the sump 1 to the cover 2 are provided at the opening 6 and inside the tarpaulin 2, to ensure preferential re-aspiration of the oil recovered in tarpaulin 2 during, in particular, starts. These means creating a pressure drop on circuit B of circulation of oil from sump 1 to tank 2 include two deflector walls 8A, 8B located in the cover 2 and one mesh 7 added to hole 6.

Les deux parois 8A, 8B déflectrices sont sensiblement perpendiculaires au fond 9 de la bâche 2 et sont situées à proximité de l'orifice 6, de façon à former une chicane pour l'huile dans son circuit B de circulation du carter 2 vers le point d'aspiration de la pompe 3 à huile.The two deflecting walls 8A, 8B are substantially perpendicular to the bottom 9 of the sheet 2 and are located at near orifice 6, so as to form a baffle for the oil in its circuit B of circulation of the crankcase 2 towards the point of the oil pump 3.

Comme représenté à la figure 1, la chicane formée par les deux parois 8A, 8B peut être "verticale". C'est-à-dire que les deux parois 8A, 8B sont décalées verticalement de façon que le circuit de circulation B de l'huile venant du carter 1 passe d'une part entre le bord inférieur d'une première 8A paroi et le fond 9 de la bâche 2, et d'autre part au-dessus de la seconde 8B paroi.As shown in Figure 1, the baffle formed by the two walls 8A, 8B can be "vertical". That is to say, the two walls 8A, 8B are vertically offset so that the oil circulation circuit B from the crankcase 1 passes on the one hand between the lower edge of a first wall 8A and the bottom 9 of tarpaulin 2, and on the other hand above the second 8B wall.

Ainsi, lors du démarrage du moteur 4, la crépine 5 de la pompe 3 à huile aspire l'huile dans la bâche 2. L'huile, chauffée notamment par les frottements des pièces moteurs, est récupérée par cette même bâche 2. Cette recirculation rapide augmente la vitesse de montée en température de l'huile de lubrification du moteur 4. Le circuit B de circulation de l'huile du carter 1 vers la bâche 2 n'est donc peu ou pas utilisé lors des démarrages et trajets courts du véhicule car les pertes de charges dans ce circuit sont supérieures à celles du circuit d'aspiration direct dans la bâche 2. Ce système de sélection de l'huile aspirée utilise donc uniquement les différences de viscosités entre l'huile froide, c'est-à-dire l'huile du carter 1, et l'huile plus chaude, c'est-à-dire l'huile de la bâche 2 qui revient du moteur 4.Thus, when starting the engine 4, the strainer 5 of the oil pump 3 draws oil into the tank 2. The oil, heated in particular by the friction of the engine parts, is recovered by this same cover 2. This recirculation rapid increases the rate of temperature rise by engine lubricating oil 4. Circulation circuit B oil from sump 1 to tarpaulin 2 is therefore little or no used during vehicle starts and short trips because the pressure losses in this circuit are greater than those of direct suction circuit in the tarpaulin 2. This system of selection of the oil aspirated therefore uses only the differences in viscosities between cold oil, i.e. oil from crankcase 1, and the warmer oil, i.e. the oil from tarpaulin 2 which returns from motor 4.

Les moyens 7, 8A, 8B introduisant une perte de charge sur le circuit B de circulation de l'huile du carter 1 vers la bâche 2 permettent cependant la circulation de l'huile du carter 1 vers le point d'aspiration A de la bâche 2 en cas de baisse du niveau d'huile dans la bâche 2 et/ou homogénéisation des températures de l'huile dans la bâche 2 et dans le carter 1. De cette façon, tout risque d'endommagement du circuit de lubrification du moteur avec une huile trop chaude est évité. De même, lorsque le débit de la pompe 3 augmente du fait de l'augmentation du régime moteur l'huile peut circuler du carter 1 dans la bâche 2 pour y être aspirée.The means 7, 8A, 8B introducing a pressure drop on the circuit B for circulating the oil from the crankcase 1 to the tarpaulin 2, however, allows the oil to flow from the sump 1 to the suction point A of the cover 2 in the event of a fall of the oil level in the tank 2 and / or homogenization of the oil temperatures in tarpaulin 2 and in sump 1. From this way any risk of damage to the lubrication of the engine with too hot oil is avoided. Similarly, when the flow rate of the pump 3 increases due to increase in engine speed oil can flow from the crankcase 1 in the cover 2 to be sucked there.

Les figures 2 et 3 représentent un second mode de réalisation de l'invention.Figures 2 and 3 show a second mode of realization of the invention.

A la figure 2, seule la bâche 2 collectrice est représentée à la base du moteur 4. La bâche 2 récupère les descentes d'huile C de la culasse et les descentes d'huile P des paliers, l'huile collectée par la bâche 2 étant réaspirée par la pompe 3.In FIG. 2, only the collecting cover 2 is shown at the base of the engine 4. The cover 2 collects the descents of oil C from the cylinder head and the oil descents P from the bearings, the oil collected by the cover 2 is sucked back by the pump 3.

La bâche 2 des figures 2 et 3 diffère de celle de la figure 1 par le fait que l'orifice 6 de mise en communication du carter 1 et de la bâche 2 est formé dans la paroi 9 constituant le fond de la bâche 2. La bâche 2 des figures 2 et 3 diffère également de celle de la figure 1 par le fait qu'elle ne comporte pas de grille rapportée sur l'orifice 6.Tarpaulin 2 in Figures 2 and 3 differs from that in Figure 1 by the fact that the opening 6 for placing the casing in communication 1 and of the sheet 2 is formed in the wall 9 constituting the bottom of the sheet 2. The sheet 2 of Figures 2 and 3 also differs of that of FIG. 1 by the fact that it does not include any grid attached to port 6.

La bâche 2 des figures 2 et 3 constitue un réservoir formé, en vue de dessus, par une portion sensiblement rectangulaire qui se prolonge, au niveau de l'un de ses côtés, par une portion sensiblement triangulaire. Le point d'aspiration A de la pompe 3 est situé sensiblement au centre de la portion rectangulaire tandis que l'orifice 6 est situé sensiblement à l'extrémité de la partie triangulaire qui constitue l'extrémité de la bâche 2. La bride 12 de fixation de la bâche 2 sur la partie inférieure du moteur 4 forme un rebord sur le bord supérieur du réservoir constitué par la bâche 2.The cover 2 of FIGS. 2 and 3 constitutes a formed reservoir, seen from above, by a substantially rectangular portion which is extended, at one of its sides, by a substantially triangular portion. The suction point A of the pump 3 is located substantially in the center of the portion rectangular while the orifice 6 is located substantially at the end of the triangular part which constitutes the end of the cover 2. The flange 12 for fixing the cover 2 on the part lower of motor 4 forms a rim on the upper edge of the tank constituted by the cover 2.

Par ailleurs, les deux parois 8A, 8B déflectrices, qui sont perpendiculaires au fond 9 de la bâche 2, sont solidaires respectivement de deux parois latérales opposées de la bâche 2. Les deux parois 8A, 8B déflectrices, qui sont situées à proximité de l'orifice 6, forment une chicane pour l'huile sur son trajet vers le point d'aspiration A de la pompe symbolisé en pointillés à la figure 3. Les deux parois 8A, 8B déflectrices forment une chicane "horizontale". C'est-à-dire que, lors de sa circulation de l'orifice 6 vers le point d'aspiration A, l'huile contourne les bords libres des deux parois 8A, 8B qui sont perpendiculaires au fond 9 de la bâche 2.Furthermore, the two deflecting walls 8A, 8B, which are perpendicular to the bottom 9 of the sheet 2, are integral respectively of two opposite side walls of the sheet 2. The two deflecting walls 8A, 8B, which are located at near orifice 6, form a baffle for the oil on its path to the suction point A of the pump symbolized in dotted lines in FIG. 3. The two deflecting walls 8A, 8B form a "horizontal" baffle. That is to say, when flow from port 6 to suction point A, oil bypasses the free edges of the two walls 8A, 8B which are perpendicular to the bottom 9 of the sheet 2.

On conçoit donc aisément que l'on a un dispositif d'augmentation de la vitesse de montée en température de l'huile moteur auto-régulé, fiable, d'une grande simplicité et peu coûteux.It is therefore easy to see that we have a device increase in the rate of temperature rise by simple, self-regulating, reliable engine oil cheap.

Bien entendu, l'invention n'est pas limitée aux exemples de réalisation décrits ci-dessus. Ainsi, les moyens créant une perte de charge sur le circuit de circulation de l'huile du carter 1 vers la bâche 2 qui ont été décrits ci-dessus peuvent être remplacés par tout autre moyen équivalent. De même, ces moyens créant une perte de charge pour l'huile peuvent être disposés à l'extérieur et/ou à l'intérieur de la bâche 2 et/ou au niveau de l'orifice 6 de communication.Of course, the invention is not limited to the examples described above. Thus, the means creating a pressure drop on the crankcase oil circulation circuit 1 to tarpaulin 2 which have been described above can be replaced by any other equivalent means. Likewise, these means creating a pressure drop for the oil can be arranged outside and / or inside the sheet 2 and / or at level of the orifice 6 of communication.

D'autres modifications à la portée de l'homme du métier entrent dans le cadre de l'invention.Other modifications within the reach of the skilled person are within the scope of the invention.

Claims (6)

Dispositif d'augmentation de la vitesse de montée en température de l'huile moteur comportant un carter (1) contenant l'huile de lubrification du moteur, une bâche (2) collectrice de l'huile ayant circulé dans le moteur, la bâche (2) ayant un volume inférieur au carter (1), une pompe (3) à huile dont le point d'aspiration (A) est situé dans la bâche (2), la bâche (2) comportant au moins un orifice (6) de mise en communication de l'huile contenue dans le carter (1) avec l'huile contenue dans la bâche (2), des moyens (7, 8A, 8B) créant une perte de charge sur le circuit (B) de circulation de l'huile du carter (1) vers la bâche (2) étant prévus à l'intérieur et/ou à l'extérieur de la bâche (2), caractérisé en ce que les moyens (7, 8A, 8B) créant une perte de charge comportent au moins une paroi (8) déflectrice située à proximité de l'orifice (6), de façon à former une chicane pour l'huile dans son circuit (B) de circulation du carter (1) vers le point d'aspiration (A).Device for increasing the rate of climb engine oil temperature including a sump (1) containing engine lubricating oil, a tarpaulin (2) oil collector having circulated in the engine, the tarpaulin (2) having a volume smaller than the casing (1), an oil pump (3) whose suction point (A) is located in the cover (2), the tarpaulin (2) comprising at least one orifice (6) for placing communication of the oil contained in the crankcase (1) with the oil contained in the tarpaulin (2), means (7, 8A, 8B) creating a pressure drop on the circulation circuit (B) of the oil from the sump (1) to the tarpaulin (2) being provided inside and / or outside the cover (2), characterized in that the means (7, 8A, 8B) creating a pressure drop include at at least one deflecting wall (8) located near the orifice (6), so as to form a baffle for the oil in its circuit (B) for circulation of the casing (1) towards the suction point (A). Dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon la revendication 1, caractérisé en ce que la bâche (2) est située dans le carter (1), les moyens (7, 8A, 8B) créant une perte de charge sur le circuit (B) de circulation de l'huile du carter (1) vers la bâche (2) étant situés au niveau et/ou à proximité de l'orifice (6).Device for increasing the rate of climb engine oil temperature according to claim 1, characterized in that the cover (2) is located in the housing (1), the means (7, 8A, 8B) creating a pressure drop on the oil circulation circuit (B) from the crankcase (1) to the tarpaulin (2) being located at and / or near the orifice (6). Dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon la revendication 1 ou 2 caractérisé en ce que les moyens (7, 8) créant une perte de charge sur le circuit (B) de circulation de l'huile du carter (1) vers la bâche (2) comportent une maille (7) rapportée sur l'orifice (6). Device for increasing the rate of climb engine oil temperature according to claim 1 or 2 characterized in that the means (7, 8) creating a loss of load on the crankcase oil circulation circuit (B) (1) towards the cover (2) have a mesh (7) attached to the orifice (6). Dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'orifice (6) de mise en communication de l'huile contenue dans le carter (1) avec l'huile contenue dans la bâche (2) est formé dans la paroi (9) constituant le fond de la bâche (2).Device for increasing the rate of climb engine oil temperature according to any one of Claims 1 to 3, characterized in that the opening (6) for placing in communication of the oil contained in the crankcase (1) with the oil contained in the tarpaulin (2) is formed in the wall (9) constituting the bottom of the sheet (2). Dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon l'une quelconque des revendications 1 à 4 caractérisé en ce que l'orifice (6) de mise en communication de l'huile contenue dans le carter (1) avec l'huile contenue dans la bâche (2) est formé dans l'une (10) des parois latérales de la bâche (2), c'est-à-dire dans l'une des parois sensiblement perpendiculaires au fond (9) de la bâche (2).Device for increasing the rate of climb engine oil temperature according to any one of Claims 1 to 4 characterized in that the orifice (6) for placing in communication of the oil contained in the crankcase (1) with the oil contained in the tarpaulin (2) is formed in one (10) side walls of the sheet (2), that is to say in one walls substantially perpendicular to the bottom (9) of the tarpaulin (2). Dispositif d'augmentation de la vitesse de montée en température de l'huile moteur selon l'une quelconque des revendications 1 à 5 caractérisé en ce que les moyens créant une perte de charge sur le circuit (B) de circulation de l'huile du carter (1) vers la bâche (2) comportent deux parois (8A, 8B) déflectrices situées dans la bâche (2), à proximité de l'orifice (6), et sensiblement perpendiculaires au fond (9) de la bâche (2), pour former une chicane pour l'huile dans son circuit (B) de circulation du carter (2) vers le point d'aspiration (A).Device for increasing the rate of climb engine oil temperature according to any one of claims 1 to 5 characterized in that the means creating a pressure drop on the oil circulation circuit (B) from the housing (1) to the cover (2) have two walls (8A, 8B) deflectors located in the cover (2), near the orifice (6), and substantially perpendicular to the bottom (9) of the sheet (2), to form a baffle for the oil in its circuit (B) of circulation of the casing (2) towards the suction point (A).
EP99400340A 1998-02-16 1999-02-12 Device for increasing the rate of temperature rise of the oil in a combustion engine Expired - Lifetime EP0936347B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9801808 1998-02-16
FR9801808A FR2775019B1 (en) 1998-02-16 1998-02-16 DEVICE FOR INCREASING THE RISE SPEED IN ENGINE OIL TEMPERATURE

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EP0936347A1 true EP0936347A1 (en) 1999-08-18
EP0936347B1 EP0936347B1 (en) 2003-03-19

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DE (1) DE69905954D1 (en)
FR (1) FR2775019B1 (en)

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WO2002010636A1 (en) * 2000-08-01 2002-02-07 Ibs Filtran Kunststoff-/ Metallerzeugnisse Gmbh Oil reservoir and method for the production thereof
EP1806483A1 (en) * 2004-10-05 2007-07-11 Toyota Jidosha Kabushiki Kaisha Oil pan and lubrication device

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Publication number Priority date Publication date Assignee Title
FR2862700B1 (en) 2003-11-25 2007-07-13 Renault Sas DEVICE FOR CIRCULATING OIL IN A LUBRICATION CIRCUIT

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Publication number Priority date Publication date Assignee Title
WO2002010636A1 (en) * 2000-08-01 2002-02-07 Ibs Filtran Kunststoff-/ Metallerzeugnisse Gmbh Oil reservoir and method for the production thereof
EP1806483A1 (en) * 2004-10-05 2007-07-11 Toyota Jidosha Kabushiki Kaisha Oil pan and lubrication device
EP1806483A4 (en) * 2004-10-05 2010-11-24 Toyota Motor Co Ltd Oil pan and lubrication device
US8066100B2 (en) 2004-10-05 2011-11-29 Toyota Jidosha Kabushiki Kaisha Oil pan and lubricating device
US8297407B2 (en) 2004-10-05 2012-10-30 Toyota Jidosha Kabushiki Kaisha Oil pan and lubricating device

Also Published As

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FR2775019B1 (en) 2000-03-31
EP0936347B1 (en) 2003-03-19
FR2775019A1 (en) 1999-08-20
DE69905954D1 (en) 2003-04-24

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