EP1788205A2 - Suction device with mobile oil strainer for vehicle engine oil pump - Google Patents

Suction device with mobile oil strainer for vehicle engine oil pump Download PDF

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Publication number
EP1788205A2
EP1788205A2 EP06301095A EP06301095A EP1788205A2 EP 1788205 A2 EP1788205 A2 EP 1788205A2 EP 06301095 A EP06301095 A EP 06301095A EP 06301095 A EP06301095 A EP 06301095A EP 1788205 A2 EP1788205 A2 EP 1788205A2
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EP
European Patent Office
Prior art keywords
suction
strainer
hydraulic fluid
duct
mobile
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
EP06301095A
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German (de)
French (fr)
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EP1788205A3 (en
Inventor
Laurent Germes
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Renault SAS
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Renault SAS
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Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP1788205A2 publication Critical patent/EP1788205A2/en
Publication of EP1788205A3 publication Critical patent/EP1788205A3/en
Withdrawn legal-status Critical Current

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    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/06—Means for keeping lubricant level constant or for accommodating movement or position of machines or engines
    • F01M11/062—Accommodating movement or position of machines or engines, e.g. dry sumps
    • F01M11/064—Movement
    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps

Definitions

  • the invention relates to a mobile suction suction pump suction device for hydraulic pump intended to be immersed in a hydraulic fluid tarpaulin of a motor vehicle engine.
  • JP 11247642 an oil tank inside which is immersed a suction strainer suction device for an oil pump, the suction strainer being in fluid communication with the oil pump through a flexible duct , able to deform freely vertically and laterally. Thanks to this measurement, the suction strainer is advantageously directed towards the oil to be sucked when it is pressed against a side wall of the tank under the effect of gravity when the engine is tilted or under the effect of the centrifugal force.
  • the document JP 10311210 provides an improvement to this device, the cover being made in two stages of different sections, the lower stage, filled with oil, being of reduced section.
  • the movement of the oil in the tarpaulin is advantageously limited.
  • this two-stage cover is more bulky, so that this solution is not very advantageous.
  • the document JP 2086908 for its part describes a suction strainer suction device for an oil pump, arranged in an oil tank, the suction strainer being mounted on a "Z" -shaped duct mounted to rotate relative to the casing engine. Moreover, the strainer is connected to a mass. Thus, when the engine is inclined and the oil is thus pressed against a side wall of the tank, the mass, under the effect of gravity, causes a displacement of the suction strainer to the area of the tank where the oil accumulates.
  • the object of the invention is therefore to provide a mobile suction suction pump suction device for hydraulic pump capable of being immersed in a motor vehicle hydraulic fluid cover having a response time to changes in conditions, in particular at the inclination of the engine, shorter so as to allow continuous suction of the hydraulic fluid of the hydraulic fluid tank, without "holes" suction.
  • a movable suction suction device for a hydraulic pump intended to be immersed in a motor vehicle hydraulic fluid cover, comprising a suction strainer and a suction duct for placing in fluid communication said hydraulic pump disposed at a first end of said suction duct and said suction strainer disposed at the second end of said suction duct, said suction duct being adapted to allow a displacement of said suction strainer in said hydraulic fluid cover, particularly towards the side walls of said hydraulic fluid cover, which is remarkable in that at least one fin is mounted on said suction duct and / or on said suction strainer so as to be in contact with the hydraulic fluid, at least under normal conditions of operation of said veh car icon.
  • such a fin advantageously makes it possible to reduce the response time of the mobile suction strainer suction device when the fluid accumulates in a region of the hydraulic fluid tank under the effect of an external force.
  • the suction device with mobile suction strainer is subjected not only to the same external forces as those acting on the oil, but also to the pressure of the flow of hydraulic fluid which is formed in the hydraulic fluid tarpaulin.
  • said at least one fin is rotatably mounted on said suction duct and / or on said suction strainer.
  • said at least one fin is mounted on said suction duct near said movable suction strainer.
  • said fins are equidistributed angularly.
  • four fins are mounted on said suction duct and / or on said suction strainer.
  • the fins are never all aligned with the flow of hydraulic fluid.
  • said suction duct is "Z" shaped.
  • said suction duct is rigid.
  • the invention also relates to an internal combustion engine comprising a hydraulic fluid tarpaulin and a hydraulic fluid pump provided with a mobile suction strainer suction device immersed in said remarkable tarpaulin in that said device for aspiration suction suction mobile is in accordance with the invention.
  • said suction duct is rotatably mounted relative to said hydraulic pump about an axis substantially perpendicular to the bottom of the tank.
  • the strainer can be moved near the walls of the sheet where the hydraulic fluid tends to accumulate under the effect of external forces such as gravity and / or inertia forces.
  • the axis of rotation of said suction duct corresponds to the median axis of said hydraulic fluid cover.
  • FIG. 1 schematically represents a mobile aspiration suction suction device 10 in fluid communication with a hydraulic pump 12. This fluid communication is preferably sealed so as not to degrade the hydraulic fluid suction by the pump hydraulic 12 because of the presence of leaks.
  • the suction device 10 is disposed in a hydraulic fluid accumulator 16 or "cover" containing a hydraulic fluid 18.
  • the suction device 10, the hydraulic pump 12 and the tank 16 are arranged in an internal combustion engine 20, preferably a motor vehicle engine.
  • the sheet 16 is made in this case with a substantially square section and therefore has side walls 22a, 22b, 22c, 22d parallel in pairs and a bottom 24. Obviously, the sheet may also have a section of different shape, without departing from the scope of the invention.
  • the tarpaulin may in particular have a circular section.
  • the aspiration suction suction device 10 comprises a suction strainer 26, which supports a suction screen 23, immersed in the hydraulic fluid 18 contained in the tank 16.
  • the strainer 26 is in fluid communication with the hydraulic pump 12 by means of a suction duct 28.
  • the suction strainer 26 is preferably continuously separated from the bottom 24 of the cover 26 by a clearance 30. In this case, the bottom 24 of the cover 16 is plan.
  • the suction duct 28 is made in the form of a "Z" duct having a first 28a and a second 28b branches of parallel axes and in fluid communication by means of a transverse branch 28c.
  • the suction pipe 28 in the shape of "Z" is rigid.
  • the suction duct 28 being able to pivot about an axis substantially perpendicular to the bottom 24 of the plane 16, the clearance 30 between the suction screen 26 and the bottom 24 of the cover 16 is substantially constant, regardless of the position of the suction screen 26 in the sheet 16.
  • the suction duct 28 is rotatably mounted relative to the hydraulic pump 12.
  • the axis of rotation of the suction duct 28 corresponds to the median axis of the tank 16.
  • fins 32 are mounted on said suction duct 28, close to the suction screen 26.
  • these fins 32 are rotatably mounted relative to the suction duct 28 and are angularly equilateral.
  • a fin has a surface on which a flow of hydraulic fluid is able to exert a pressure.
  • a fin is formed of a thin plate, preferably substantially flat.
  • the fins 32 here have a rectangular shape, without this form introducing any limitation as to the embodiments of these fins.
  • the fins 32 extend substantially perpendicularly to the bottom 24 plane.
  • a flow of hydraulic fluid 18 is caused, for example, by the effect of gravity, when the engine is tilted, or inertia, when the vehicle negotiates a turn.
  • the same forces also act on the aspiration suction suction device 10.
  • the suction strainer 26 driven by the flow of the hydraulic fluid 18 under the effect of the pressure the flow of hydraulic fluid 18 on the fins, follows the hydraulic fluid 18.
  • the suction strainer suction device 10 gains in speed of response during changes of distribution of the hydraulic fluid 18 in the tank 16.
  • the fins 32 are initially pivoted relative to their axis of rotation so as to be placed in a configuration where the pressure of the fluid on the fins is maximum.
  • this configuration corresponds to the case where two fins are substantially perpendicular to the flow while the other two fins are parallel to the flow. The displacement of the strainer is thus easier. In addition, this optimizes the reaction time of the mobile strainer.
  • the suction duct must be able to allow movement of the suction strainer, especially to the side walls of the tarpaulin.
  • This can be achieved by using a flexible suction duct or by interposing a flexible duct between the suction duct and the hydraulic pump.
  • the gravity or the inertia acting on the hydraulic fluid to press against at least one of the walls side of the sheet participate in the orientation of the suction duct and the suction strainer in the direction of the hydraulic fluid.
  • the fins can also be mounted on the suction duct or on the suction strainer at any location such that the fins are, under normal operating conditions, in contact with the hydraulic fluid.
  • normal conditions of implementation means when the vehicle is traveling on a flat and straight road at constant speed or when it is stopped, the level of hydraulic fluid in the hydraulic fluid tarpaulin being normal.
  • the number of fins, their distribution and their assembly relative to the suction duct can be modified without departing from the scope of the invention.
  • the fins can be mounted fixed or free in rotation relative to the suction duct.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The device has a blade (32) mounted on a suction conduit (28) and/or suction strainer (26) so as to be in contact with a hydraulic fluid (18), in normal implementation condition. The suction conduit is mounted at rotation with respect to a hydraulic fluid pump (12), and presents a rotation axis corresponding to a median axis of a hydraulic fluid tank (16). The suction conduit is Z shaped and comprises branch ends (28a, 28b) in fluid communication using a transversal branch (28c).

Description

L'invention se rapporte à un dispositif d'aspiration à crépine d'aspiration mobile pour pompe hydraulique destiné à être plongé dans une bâche à fluide hydraulique de moteur de véhicule automobile.The invention relates to a mobile suction suction pump suction device for hydraulic pump intended to be immersed in a hydraulic fluid tarpaulin of a motor vehicle engine.

L'utilisation d'un tel dispositif d'aspiration à crépine d'aspiration mobile a pour but d'éviter le déjaugeage de la pompe hydraulique lors du déplacement de la nappe de fluide hydraulique dans la bâche sous l'effet centrifuge, quelles que soient les conditions de roulage du véhicule.The use of such a mobile suction suction suction device is intended to avoid the planing of the hydraulic pump during the displacement of the hydraulic fluid sheet in the sheet under the centrifugal effect, whatever the driving conditions of the vehicle.

On connaît du document JP 11247642 une bâche à huile à l'intérieur de laquelle est plongé un dispositif d'aspiration à crépine d'aspiration pour une pompe à huile, la crépine d'aspiration étant en communication de fluide avec la pompe à huile au travers d'un conduit flexible, apte à se déformer librement verticalement et latéralement. Grâce à cette mesure, la crépine d'aspiration est avantageusement orientée vers l'huile à aspirer lorsque celle-ci est plaquée contre une paroi latérale de la bâche sous l'effet de la gravité lorsque le moteur est incliné ou sous l'effet de la force centrifuge.Document is known JP 11247642 an oil tank inside which is immersed a suction strainer suction device for an oil pump, the suction strainer being in fluid communication with the oil pump through a flexible duct , able to deform freely vertically and laterally. Thanks to this measurement, the suction strainer is advantageously directed towards the oil to be sucked when it is pressed against a side wall of the tank under the effect of gravity when the engine is tilted or under the effect of the centrifugal force.

Le document JP 10311210 apporte une amélioration à ce dispositif, la bâche étant réalisée en deux étages de sections différentes, l'étage inférieur, rempli d'huile, étant de section réduite. Ainsi, le mouvement de l'huile dans la bâche est avantageusement limité. Cependant, cette bâche à deux étages est plus encombrante, si bien que cette solution n'est pas très avantageuse.The document JP 10311210 provides an improvement to this device, the cover being made in two stages of different sections, the lower stage, filled with oil, being of reduced section. Thus, the movement of the oil in the tarpaulin is advantageously limited. However, this two-stage cover is more bulky, so that this solution is not very advantageous.

Le document JP 2086908 décrit pour sa part un dispositif d'aspiration à crépine d'aspiration pour une pompe à huile, disposé dans une bâche à huile, la crépine d'aspiration étant montée sur un conduit en forme de « Z » monté à rotation par rapport au carter moteur. Par ailleurs, la crépine est reliée à une masse. Ainsi, lorsque le moteur est incliné et que l'huile est ainsi plaquée contre une paroi latérale de la bâche, la masse, sous l'effet de la gravité, engendre un déplacement de la crépine d'aspiration vers la zone de la bâche où l'huile s'accumule.The document JP 2086908 for its part describes a suction strainer suction device for an oil pump, arranged in an oil tank, the suction strainer being mounted on a "Z" -shaped duct mounted to rotate relative to the casing engine. Moreover, the strainer is connected to a mass. Thus, when the engine is inclined and the oil is thus pressed against a side wall of the tank, the mass, under the effect of gravity, causes a displacement of the suction strainer to the area of the tank where the oil accumulates.

Ces dispositifs ne permettent une aspiration continue de l'huile que dans des conditions peu contraignantes. Ces dispositifs présentent en effet un temps de réponse relativement long, ce qui implique que l'huile est plaquée plus rapidement sur la paroi latérale que la crépine d'aspiration n'est déplacée. Il peut en résulter des déjaugeages de la crépine d'aspiration et donc des « trous » au cours de l'aspiration de l'huile.These devices allow continuous suction of the oil only under mild conditions. These devices have indeed a relatively long response time, which implies that the oil is plated faster on the side wall that the suction strainer is moved. This may result in suction cups evacuation and thus "holes" during the suction of the oil.

Le but de l'invention est donc de proposer un dispositif d'aspiration à crépine d'aspiration mobile pour pompe hydraulique apte à être plongé dans une bâche à fluide hydraulique de moteur de véhicule automobile ayant un temps de réponse aux changements de conditions, notamment à l'inclinaison du moteur, plus court de manière à permettre une aspiration en continue du fluide hydraulique de la bâche à fluide hydraulique, sans « trous » d'aspiration.The object of the invention is therefore to provide a mobile suction suction pump suction device for hydraulic pump capable of being immersed in a motor vehicle hydraulic fluid cover having a response time to changes in conditions, in particular at the inclination of the engine, shorter so as to allow continuous suction of the hydraulic fluid of the hydraulic fluid tank, without "holes" suction.

On atteint ce but de l'invention, au moyen d'un dispositif d'aspiration à crépine d'aspiration mobile pour pompe hydraulique destiné à être plongé dans une bâche à fluide hydraulique de moteur de véhicule automobile, comprenant une crépine d'aspiration et un conduit d'aspiration destiné à mettre en communication de fluide ladite pompe hydraulique disposée à une première extrémité dudit conduit d'aspiration et ladite crépine d'aspiration disposée à la seconde extrémité dudit conduit d'aspiration, ledit conduit d'aspiration étant apte à permettre un déplacement de ladite crépine d'aspiration dans ladite bâche à fluide hydraulique, notamment en direction des parois latérales de ladite bâche à fluide hydraulique, remarquable en ce qu'au moins une ailette est montée sur ledit conduit d'aspiration et/ou sur ladite crépine d'aspiration de manière à être en contact avec le fluide hydraulique, au moins dans des conditions normales de mise en oeuvre dudit véhicule automobile.This object of the invention is achieved by means of a movable suction suction device for a hydraulic pump intended to be immersed in a motor vehicle hydraulic fluid cover, comprising a suction strainer and a suction duct for placing in fluid communication said hydraulic pump disposed at a first end of said suction duct and said suction strainer disposed at the second end of said suction duct, said suction duct being adapted to allow a displacement of said suction strainer in said hydraulic fluid cover, particularly towards the side walls of said hydraulic fluid cover, which is remarkable in that at least one fin is mounted on said suction duct and / or on said suction strainer so as to be in contact with the hydraulic fluid, at least under normal conditions of operation of said veh car icon.

Comme on le verra plus en détails par la suite, une telle ailette permet avantageusement de réduire le temps de réponse du dispositif d'aspiration à crépine d'aspiration mobile lorsque le fluide s'accumule dans une région de la bâche à fluide hydraulique sous l'effet d'une force extérieure. En effet, dans ce cas, le dispositif d'aspiration à crépine d'aspiration mobile est soumis non seulement aux mêmes forces extérieures que celles qui agissent sur l'huile, mais également à la pression du flux de fluide hydraulique qui se forme dans la bâche à fluide hydraulique.As will be seen in more detail later, such a fin advantageously makes it possible to reduce the response time of the mobile suction strainer suction device when the fluid accumulates in a region of the hydraulic fluid tank under the effect of an external force. In fact, in this case, the suction device with mobile suction strainer is subjected not only to the same external forces as those acting on the oil, but also to the pressure of the flow of hydraulic fluid which is formed in the hydraulic fluid tarpaulin.

De préférence, ladite au moins une ailette est montée à rotation sur ledit conduit d'aspiration et/ou sur ladite crépine d'aspiration.Preferably, said at least one fin is rotatably mounted on said suction duct and / or on said suction strainer.

De manière préférée, ladite au moins une ailette est montée sur ledit conduit d'aspiration à proximité de ladite crépine d'aspiration mobile.Preferably, said at least one fin is mounted on said suction duct near said movable suction strainer.

De préférence encore, lesdites ailettes sont équiréparties angulairement.More preferably, said fins are equidistributed angularly.

De manière préférée, quatre ailettes sont montées sur ledit conduit d'aspiration et/ou sur ladite crépine d'aspiration.Preferably, four fins are mounted on said suction duct and / or on said suction strainer.

Ainsi, avantageusement, les ailettes ne sont jamais toutes alignées avec le flux de fluide hydraulique.Thus, advantageously, the fins are never all aligned with the flow of hydraulic fluid.

De préférence, ledit conduit d'aspiration est en forme de « Z ».Preferably, said suction duct is "Z" shaped.

De manière préférée, ledit conduit d'aspiration est rigide.Preferably, said suction duct is rigid.

L'invention se rapporte également à un moteur à combustion interne comportant une bâche à fluide hydraulique et une pompe à fluide hydraulique munie d'un dispositif d'aspiration à crépine d'aspiration mobile plongé dans ladite bâche remarquable en ce que ledit dispositif d'aspiration à crépine d'aspiration mobile est conforme à l'invention.The invention also relates to an internal combustion engine comprising a hydraulic fluid tarpaulin and a hydraulic fluid pump provided with a mobile suction strainer suction device immersed in said remarkable tarpaulin in that said device for aspiration suction suction mobile is in accordance with the invention.

De préférence, ledit conduit d'aspiration est monté à rotation par rapport à ladite pompe hydraulique autour d'un axe sensiblement perpendiculaire au fond de la bâche.Preferably, said suction duct is rotatably mounted relative to said hydraulic pump about an axis substantially perpendicular to the bottom of the tank.

Ainsi, de manière avantageuse, la crépine peut être déplacée à proximité des parois de la bâche où le fluide hydraulique a tendance à s'accumuler sous l'effet des forces extérieures telles que la pesanteur et/ou les forces d'inertie.Thus, advantageously, the strainer can be moved near the walls of the sheet where the hydraulic fluid tends to accumulate under the effect of external forces such as gravity and / or inertia forces.

De manière préférée, l'axe de rotation dudit conduit d'aspiration correspond à l'axe médian de ladite bâche à fluide hydraulique.Preferably, the axis of rotation of said suction duct corresponds to the median axis of said hydraulic fluid cover.

D'autres caractéristiques et avantages de l'invention apparaîtront de la description qui va suivre donnée à titre illustratif et non limitatif en regard des figures sur lesquelles :

  • la figure 1 représente schématiquement en vue de côté un dispositif d'aspiration à crépine d'aspiration mobile conforme à l'invention plongé dans une bâche où le fluide hydraulique est réparti de manière homogène ;
  • la figure 2 représente schématiquement en vue de côté le dispositif d'aspiration à crépine d'aspiration mobile de la figure 1 plongée dans une bâche dans le cas où le fluide hydraulique est accumulé à proximité d'une paroi de la bâche ; et
  • la figure 3 représente schématiquement en vue de dessus le dispositif d'aspiration à crépine d'aspiration mobile des figures 1 et 2 plongé dans une bâche où le fluide hydraulique est réparti de manière homogène.
Other features and advantages of the invention will become apparent from the following description given by way of non-limiting illustration with reference to the figures in which:
  • Figure 1 shows schematically in side view a mobile suction suction suction device according to the invention immersed in a sheet where the hydraulic fluid is distributed homogeneously;
  • Figure 2 shows schematically in side view the suction suction suction device mobile of Figure 1 immersed in a sheet in the case where the hydraulic fluid is accumulated near a wall of the tarpaulin; and
  • 3 schematically shows a top view of the mobile suction suction suction device of Figures 1 and 2 immersed in a sheet where the hydraulic fluid is distributed homogeneously.

La figure 1 représente schématiquement un dispositif d'aspiration à crépine d'aspiration mobile 10 en communication de fluide avec une pompe hydraulique 12. Cette communication de fluide est de préférence étanche de manière à ne pas dégrader l'aspiration de fluide hydraulique par la pompe hydraulique 12 du fait de la présence de fuites. Le dispositif d'aspiration 10 est disposé dans un accumulateur de fluide hydraulique 16 ou « bâche » contenant un fluide hydraulique 18. Le dispositif d'aspiration 10, la pompe hydraulique 12 et la bâche 16 sont disposés dans un moteur à combustion interne 20, de préférence un moteur pour véhicule automobile.FIG. 1 schematically represents a mobile aspiration suction suction device 10 in fluid communication with a hydraulic pump 12. This fluid communication is preferably sealed so as not to degrade the hydraulic fluid suction by the pump hydraulic 12 because of the presence of leaks. The suction device 10 is disposed in a hydraulic fluid accumulator 16 or "cover" containing a hydraulic fluid 18. The suction device 10, the hydraulic pump 12 and the tank 16 are arranged in an internal combustion engine 20, preferably a motor vehicle engine.

La bâche 16 est réalisée en l'espèce avec une section sensiblement carrée et comporte donc des parois latérales 22a, 22b, 22c, 22d parallèles deux à deux et un fond 24. Bien évidemment, la bâche peut également avoir une section de forme différente, sans sortir du cadre de l'invention. La bâche peut notamment avoir une section de forme circulaire.The sheet 16 is made in this case with a substantially square section and therefore has side walls 22a, 22b, 22c, 22d parallel in pairs and a bottom 24. Obviously, the sheet may also have a section of different shape, without departing from the scope of the invention. The tarpaulin may in particular have a circular section.

Le dispositif d'aspiration à crépine d'aspiration 10 comporte une crépine d'aspiration 26, qui supporte un tamis d'aspiration 23, immergée dans le fluide hydraulique 18 contenu dans la bâche 16. La crépine 26 est en communication de fluide avec la pompe hydraulique 12 au moyen d'un conduit d'aspiration 28. La crépine d'aspiration 26 est, de préférence, continuellement séparée du fond 24 de la bâche 26 par un jeu 30. En l'espèce, le fond 24 de la bâche 16 est plan.The aspiration suction suction device 10 comprises a suction strainer 26, which supports a suction screen 23, immersed in the hydraulic fluid 18 contained in the tank 16. The strainer 26 is in fluid communication with the hydraulic pump 12 by means of a suction duct 28. The suction strainer 26 is preferably continuously separated from the bottom 24 of the cover 26 by a clearance 30. In this case, the bottom 24 of the cover 16 is plan.

De préférence, le conduit d'aspiration 28 est réalisé sous la forme d'un conduit en « Z » comportant une première 28a et une deuxième 28b branches d'axes parallèles et en communication de fluide au moyen d'une branche transversale 28c. Par ailleurs, de préférence, le conduit d'aspiration 28 en forme de « Z » est rigide. Ainsi, avantageusement, le conduit d'aspiration 28 étant ape à pivoter autour d'un axe sensiblement perpendiculaire au fond 24 plan de la bâche 16, le jeu 30 entre le tamis d'aspiration 26 et le fond 24 de la bâche 16 est sensiblement constant, indépendamment de la position du tamis d'aspiration 26 dans la bâche 16.Preferably, the suction duct 28 is made in the form of a "Z" duct having a first 28a and a second 28b branches of parallel axes and in fluid communication by means of a transverse branch 28c. Furthermore, preferably, the suction pipe 28 in the shape of "Z" is rigid. Thus, advantageously, the suction duct 28 being able to pivot about an axis substantially perpendicular to the bottom 24 of the plane 16, the clearance 30 between the suction screen 26 and the bottom 24 of the cover 16 is substantially constant, regardless of the position of the suction screen 26 in the sheet 16.

Le conduit d'aspiration 28 est monté à rotation par rapport à la pompe hydraulique 12. De préférence, l'axe de rotation du conduit d'aspiration 28 correspond à l'axe médian de la bâche 16. Ainsi, avantageusement, la longueur du conduit d'aspiration 28 est réduite et, par conséquent, on limite les pertes de charge en amont de la pompe hydraulique 12.The suction duct 28 is rotatably mounted relative to the hydraulic pump 12. Preferably, the axis of rotation of the suction duct 28 corresponds to the median axis of the tank 16. Thus, advantageously, the length of the suction duct 28 is reduced and, consequently, the pressure losses upstream of the hydraulic pump 12 are limited.

Par ailleurs, quatre ailettes 32 sont montées sur ledit conduit d'aspiration 28, à proximité du tamis d'aspiration 26. De préférence, ces ailettes 32 sont montées à rotation par rapport au conduit d'aspiration 28 et sont équiréparties angulairement. De préférence, une ailette présente une surface sur laquelle un flux de fluide hydraulique est apte à exercer une pression. De manière préférée, une ailette est formée d'une plaque mince, de préférence sensiblement plane. Par exemple, les ailettes 32 ont ici une forme rectangulaire, sans que cette forme n'introduise de limitation quant aux modes de réalisation de ces ailettes. De préférence, les ailettes 32 s'étendent sensiblement perpendiculairement au fond 24 plan.Furthermore, four fins 32 are mounted on said suction duct 28, close to the suction screen 26. Preferably, these fins 32 are rotatably mounted relative to the suction duct 28 and are angularly equilateral. Preferably, a fin has a surface on which a flow of hydraulic fluid is able to exert a pressure. Preferably, a fin is formed of a thin plate, preferably substantially flat. For example, the fins 32 here have a rectangular shape, without this form introducing any limitation as to the embodiments of these fins. Preferably, the fins 32 extend substantially perpendicularly to the bottom 24 plane.

Le fonctionnement et les avantages du dispositif d'aspiration 10 selon l'invention découlent directement de la description qui vient d'en être faite.The operation and advantages of the suction device 10 according to the invention derive directly from the description which has just been given.

Lorsque la bâche 16 est disposée à l'horizontale, comme cela est représenté sur la figure 1 par exemple, le fluide hydraulique 18 est réparti de manière homogène dans la bâche 16. La position de la crépine d'aspiration 26 n'a alors guère d'importance. Il est à noter toutefois que le jeu 30 permet de séparer la crépine d'aspiration 26 du fond 24 de la bâche 16 afin de ne pas perturber l'aspiration du fluide hydraulique 18 par le dispositif d'aspiration 10.When the cover 16 is disposed horizontally, as shown in FIG. 1 for example, the hydraulic fluid 18 is homogeneously distributed in the cover 16. The position of the suction strainer 26 then hardly important. It should be noted, however, that the clearance 30 makes it possible to separate the suction strainer 26 from the bottom 24 of the tank 16 so as not to disturb the suction of the hydraulic fluid 18 by the suction device 10.

Lorsque le fluide hydraulique 18 s'accumule dans une région particulière de la bâche 16, comme cela est représenté à la figure 2, il se forme un flux de fluide hydraulique 18 causé, par exemple, par l'effet de la gravité, lorsque le moteur est incliné, ou de l'inertie, lorsque le véhicule négocie un virage. Les mêmes forces agissent également sur le dispositif d'aspiration à crépine d'aspiration 10. Cependant, du fait de la présence des ailettes 32, la crépine d'aspiration 26 entraînée par le flux du fluide hydraulique 18 sous l'effet de la pression du flux de fluide hydraulique 18 sur les ailettes, suit le fluide hydraulique 18. Ainsi, avantageusement, grâce à ces ailettes 32, le dispositif d'aspiration à crépine d'aspiration 10 selon l'invention gagne en rapidité de réponse lors des changements de répartition du fluide hydraulique 18 dans la bâche 16.When the hydraulic fluid 18 accumulates in a particular region of the tank 16, as shown in FIG. 2, a flow of hydraulic fluid 18 is caused, for example, by the effect of gravity, when the engine is tilted, or inertia, when the vehicle negotiates a turn. The same forces also act on the aspiration suction suction device 10. However, because of the presence of the fins 32, the suction strainer 26 driven by the flow of the hydraulic fluid 18 under the effect of the pressure the flow of hydraulic fluid 18 on the fins, follows the hydraulic fluid 18. Thus, advantageously, thanks to these fins 32, the suction strainer suction device 10 according to the invention gains in speed of response during changes of distribution of the hydraulic fluid 18 in the tank 16.

De plus, du fait du montage à rotation des ailettes 32 sur le conduit d'aspiration 28, les ailettes vont dans un premier temps pivoter par rapport à leur axe de rotation de manière à se placer dans une configuration où la pression du fluide sur les ailettes est maximale. Avantageusement, cette configuration correspond au cas où deux ailettes sont sensiblement perpendiculaires au flux tandis que les deux autres ailettes sont, elles, parallèles au flux. Le déplacement de la crépine est ainsi plus aisé. De plus, on optimise ainsi le temps de réaction de la crépine mobile.In addition, because of the rotational mounting of the fins 32 on the suction duct 28, the fins are initially pivoted relative to their axis of rotation so as to be placed in a configuration where the pressure of the fluid on the fins is maximum. Advantageously, this configuration corresponds to the case where two fins are substantially perpendicular to the flow while the other two fins are parallel to the flow. The displacement of the strainer is thus easier. In addition, this optimizes the reaction time of the mobile strainer.

Cependant, l'invention ne se réduit pas à l'exemple de mode de réalisation présenté ici à titre d'exemple illustratif et non limitatif.However, the invention is not limited to the exemplary embodiment presented here by way of illustrative and non-limiting example.

Ainsi, le conduit d'aspiration doit être apte à permettre un déplacement de la crépine d'aspiration, notamment vers les parois latérales de la bâche. Ceci peut être obtenu en utilisant un conduit d'aspiration souple ou en intercalant entre le conduit d'aspiration et la pompe hydraulique un conduit souple. Ainsi, la gravité ou l'inertie qui agissent sur le fluide hydraulique pour le plaquer contre l'une au moins des parois latérales de la bâche, participent à l'orientation du conduit d'aspiration et de la crépine d'aspiration dans la direction du fluide hydraulique.Thus, the suction duct must be able to allow movement of the suction strainer, especially to the side walls of the tarpaulin. This can be achieved by using a flexible suction duct or by interposing a flexible duct between the suction duct and the hydraulic pump. Thus, the gravity or the inertia acting on the hydraulic fluid to press against at least one of the walls side of the sheet, participate in the orientation of the suction duct and the suction strainer in the direction of the hydraulic fluid.

Par ailleurs, les ailettes peuvent également être montées sur le conduit d'aspiration ou sur la crépine d'aspiration à tout endroit tel que les ailettes sont, dans des conditions normales de mise en oeuvre, en contact avec le fluide hydraulique. Par conditions normales de mise en oeuvre, on entend lorsque le véhicule roule sur une route plane et rectiligne à vitesse constante ou lorsqu'il est arrêté, le niveau de fluide hydraulique dans la bâche à fluide hydraulique étant normal.Furthermore, the fins can also be mounted on the suction duct or on the suction strainer at any location such that the fins are, under normal operating conditions, in contact with the hydraulic fluid. By normal conditions of implementation means when the vehicle is traveling on a flat and straight road at constant speed or when it is stopped, the level of hydraulic fluid in the hydraulic fluid tarpaulin being normal.

Enfin, le nombre d'ailettes, leur répartition et leur montage par rapport au conduit d'aspiration peuvent être modifiés sans sortir du cadre de l'invention. On peut notamment imaginer un nombre d'ailettes différent. On peut concevoir que les ailettes ne sont pas équiréparties angulairement. Enfin, les ailettes peuvent être montées fixes ou libres en rotation par rapport au conduit d'aspiration.Finally, the number of fins, their distribution and their assembly relative to the suction duct can be modified without departing from the scope of the invention. One can imagine a different number of fins. It is conceivable that the fins are not evenly distributed angularly. Finally, the fins can be mounted fixed or free in rotation relative to the suction duct.

Claims (10)

Dispositif d'aspiration à crépine d'aspiration mobile (10) pour pompe hydraulique (12) destiné à être plongé dans une bâche à fluide hydraulique (16) de moteur de véhicule automobile (20), comprenant une crépine d'aspiration (26) et un conduit d'aspiration (28) destiné à mettre en communication de fluide ladite pompe hydraulique (12) disposée à une première extrémité dudit conduit d'aspiration (28) et ladite crépine d'aspiration (26) disposée à la seconde extrémité dudit conduit d'aspiration (28), ledit conduit d'aspiration (28) étant apte à permettre un déplacement de ladite crépine d'aspiration (26) dans ladite bâche à fluide hydraulique (16), notamment en direction des parois latérales (22a, 22b, 22c, 22d) de ladite bâche à fluide hydraulique (16), caractérisé en ce qu'au moins une ailette (32) est montée sur ledit conduit d'aspiration (28) et/ou sur ladite crépine d'aspiration (26) de manière à être en contact avec le fluide hydraulique, au moins dans des conditions normales de mise en oeuvre dudit véhicule automobile.Suction device with a mobile suction strainer (10) for a hydraulic pump (12) to be immersed in a motor vehicle engine hydraulic fluid cover (16) (20), comprising a suction strainer (26) and a suction duct (28) for placing in fluid communication said hydraulic pump (12) disposed at a first end of said suction duct (28) and said suction strainer (26) disposed at the second end thereof suction duct (28), said suction duct (28) being able to allow a displacement of said suction strainer (26) in said hydraulic fluid cover (16), in particular in the direction of the side walls (22a, 22b, 22c, 22d) of said hydraulic fluid cover (16), characterized in that at least one fin (32) is mounted on said suction duct (28) and / or on said suction strainer (26). ) so as to be in contact with the hydraulic fluid, at least under normal conditions of use of said motor vehicle. Dispositif d'aspiration à crépine d'aspiration mobile selon la revendication 1, caractérisé en ce que ladite au moins une ailette (32) est montée à rotation sur ledit conduit d'aspiration (28) et/ou sur ladite crépine d'aspiration (26).A suction suction suction device according to claim 1, characterized in that said at least one fin (32) is rotatably mounted on said suction duct (28) and / or on said suction strainer ( 26). Dispositif d'aspiration à crépine d'aspiration mobile selon l'une des revendications 1 et 2, caractérisé en ce que ladite au moins une ailette (32) est montée sur ledit conduit d'aspiration (28) à proximité de ladite crépine d'aspiration (26).A mobile suction suction suction device according to one of claims 1 and 2, characterized in that said at least one fin (32) is mounted on said suction duct (28) close to said strainer. suction (26). Dispositif d'aspiration à crépine d'aspiration mobile selon l'une des revendications 1 à 3, caractérisé en ce que lesdites ailettes (32) sont équiréparties angulairement.Suction device with a mobile suction strainer according to one of claims 1 to 3, characterized in that said fins (32) are equidistributed angularly. Dispositif d'aspiration à crépine d'aspiration mobile selon la revendication 4, caractérisé en ce que quatre ailettes (32) sont montées sur ledit conduit d'aspiration (28) et/ou sur ladite crépine d'aspiration (26).A suction suction suction device according to claim 4, characterized in that four fins (32) are mounted on said suction duct (28) and / or on said suction strainer (26). Dispositif d'aspiration à crépine d'aspiration mobile selon l'une quelconque des revendication précédentes, caractérisé en ce que ledit conduit d'aspiration (28) est en forme de « Z ».A suction suction suction device according to any one of the preceding claims, characterized in that said suction duct (28) is "Z" shaped. Dispositif d'aspiration à crépine d'aspiration mobile selon la revendication 6, caractérisé en ce que ledit conduit d'aspiration (28) est rigide.Mobile suction suction suction device according to claim 6, characterized in that said suction duct (28) is rigid. Moteur à combustion interne (20) comportant une bâche à fluide hydraulique (16) et une pompe à fluide hydraulique (12) munie d'un dispositif d'aspiration à crépine d'aspiration mobile (10) plongé dans ladite bâche (16) caractérisé en ce que ledit dispositif d'aspiration à crépine d'aspiration mobile (10) est conforme à l'une quelconque des revendications précédentes.Internal combustion engine (20) comprising a hydraulic fluid tarpaulin (16) and a hydraulic fluid pump (12) provided with a suction device with a mobile suction strainer (10) immersed in said tarpaulin (16), characterized in that said movable suction strainer suction device (10) is in accordance with any one of the preceding claims. Moteur à combustion interne selon la revendication 8, caractérisé en ce que ledit conduit d'aspiration (28) est monté à rotation par rapport à ladite pompe hydraulique autour d'un axe sensiblement perpendiculaire au fond (14) de la bâche (16).Internal combustion engine according to claim 8, characterized in that said suction duct (28) is rotatably mounted relative to said hydraulic pump about an axis substantially perpendicular to the bottom (14) of the tank (16). Moteur à combustion interne selon la revendication 9, caractérisé en ce que l'axe de rotation dudit conduit d'aspiration (28) correspond à l'axe médian de ladite bâche à fluide hydraulique (16).Internal combustion engine according to claim 9, characterized in that the axis of rotation of said suction duct (28) corresponds to the median axis of said hydraulic fluid cover (16).
EP06301095A 2005-11-08 2006-10-27 Suction device with mobile oil strainer for vehicle engine oil pump Withdrawn EP1788205A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0511335A FR2893082B1 (en) 2005-11-08 2005-11-08 MOBILE SUCTION SHIRT SUCTION DEVICE FOR A HYDRAULIC PUMP FOR DRAINING IN A HYDRAULIC FLUID OF A MOTOR VEHICLE MOTOR

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EP1788205A2 true EP1788205A2 (en) 2007-05-23
EP1788205A3 EP1788205A3 (en) 2010-07-21

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ES2603429A1 (en) * 2016-04-08 2017-02-27 Universidad Europea De Madrid, S.L.U. System of lubrication of machines and motors subjected to accelerations (Machine-translation by Google Translate, not legally binding)
CN107420153A (en) * 2017-05-22 2017-12-01 宁波里尔汽车技术有限公司 A kind of anti-inclination wet sump

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JPS5292141U (en) * 1975-12-30 1977-07-09
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JPH0913928A (en) * 1995-06-29 1997-01-14 Kondo Lacing Gareeji:Kk Oil sucking device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2603429A1 (en) * 2016-04-08 2017-02-27 Universidad Europea De Madrid, S.L.U. System of lubrication of machines and motors subjected to accelerations (Machine-translation by Google Translate, not legally binding)
CN107420153A (en) * 2017-05-22 2017-12-01 宁波里尔汽车技术有限公司 A kind of anti-inclination wet sump
CN107420153B (en) * 2017-05-22 2019-11-08 宁波里尔汽车技术有限公司 A kind of anti-inclination wet sump

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FR2893082B1 (en) 2007-12-14
EP1788205A3 (en) 2010-07-21
FR2893082A1 (en) 2007-05-11

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