EP1777383A1 - Oil sump for combustion engine - Google Patents

Oil sump for combustion engine Download PDF

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Publication number
EP1777383A1
EP1777383A1 EP06300966A EP06300966A EP1777383A1 EP 1777383 A1 EP1777383 A1 EP 1777383A1 EP 06300966 A EP06300966 A EP 06300966A EP 06300966 A EP06300966 A EP 06300966A EP 1777383 A1 EP1777383 A1 EP 1777383A1
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EP
European Patent Office
Prior art keywords
oil
tank
engine
main tank
main
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
EP06300966A
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German (de)
French (fr)
Inventor
Jean-Claude Gallot
Bernard Le Gac
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1777383A1 publication Critical patent/EP1777383A1/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Withdrawn legal-status Critical Current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
    • F01M11/0004—Oilsumps

Definitions

  • the present invention relates to an oil pan for a motor vehicle engine.
  • the invention finds a particularly advantageous application in the field of lubrication of motor vehicle engines.
  • the object of the invention is to increase the mileage traveled between two emptying of the engine oil circuit without this increase deteriorating the lubricating qualities of the oil used.
  • one solution consists in increasing the quantity of oil circulating in the engine. For this purpose, one can consider increasing the size of the oil pan.
  • the volume available for this purpose is limited by the environment of the engine, namely the ground clearance, other engine functions and accessories, as well as the deflections of the connecting rods and crankshaft that do not allow to increase the level of the engine. at the risk of sparging and emulsion formation.
  • This known device however, has the disadvantage of requiring a bypass circuit which, by hypothesis, reduces the amount of oil reserved for the actual lubrication.
  • this circuit is complex since it implements many ducts, nozzles, shut-off valves, calibrated valves, etc.
  • the technical problem to be solved by the object of the present invention is to propose an oil tank for a motor vehicle engine. which would make it possible very simply and at low cost the desired increase in the amount of lubricating oil of the engine.
  • said oil tank comprises a main tank fed by oil return from the low engine, and at least one additional tank fed by oil return from the top engine and comprising oil transfer means to said main tank.
  • the oil tank according to the invention consists of at least two compartments which can be contiguous, and not distant as in the known device described above. It is, on the one hand, the main tank, equivalent to the bowl usually present in a motor vehicle engine, and whose volume is limited by the travel of the rods, and, secondly, at least one tank complementary located in the available volumes close to the main tank, apart from the travel of the connecting rods.
  • This (these) tank (s) complement (s) allows (tent) to substantially increase the usable oil volume while forming at lower cost a single compact oil tank compact. The volume increase thus obtained can reach 50% or more.
  • the oil tank according to the invention does not require any supply of the additional tank by sampling on the main circuit. There is therefore no need for conduits, valves, valves, or miscellaneous accessories, which represents a great simplification of implementation and a significant saving compared to the known device of the state of the art.
  • said oil transfer means is constituted by an overflow device.
  • the additional reservoir is fed by a conduit opening substantially in the bottom of said complementary reservoir.
  • Figure 1 is a sectional view of an oil tank according to the invention.
  • Figure 2 is a perspective view of the oil tank of Figure 1.
  • the invention is not limited to the presence of a single complementary reservoir, but that it can also implement a plurality of complementary reservoirs arranged between them so as to make best use of the available volumes. near the main reservoir.

Abstract

The pan has a main tank (11) that is placed at proximity of an oil pump and with volume limited by travel of connecting rods (20). The main tank is fed back by oil returning from a crankshaft/connecting rod assembly. An additional tank (12) is placed outward from the rods and fed by oil returning from engine bottom by simple gravity through a duct (121). The tank (12) comprises an overflow device (122) for transferring oil towards the main tank.

Description

La présente invention concerne un bac à huile pour moteur de véhicule automobile.The present invention relates to an oil pan for a motor vehicle engine.

L'invention trouve une application particulièrement avantageuse dans le domaine de la lubrification des moteurs de véhicules automobiles.The invention finds a particularly advantageous application in the field of lubrication of motor vehicle engines.

Plus spécialement, l'invention a pour but d'augmenter le kilométrage parcouru entre deux vidanges du circuit d'huile des moteurs sans que cette augmentation ne détériore les qualités lubrifiantes de l'huile utilisée.More specifically, the object of the invention is to increase the mileage traveled between two emptying of the engine oil circuit without this increase deteriorating the lubricating qualities of the oil used.

On sait, en effet, que dans les moteurs à combustion interne le lubrifiant se dégrade au cours du fonctionnement par encrassement dû à la formation de particules métalliques et charbonneuses, par destruction progressive des additifs, et par dilution du carburant dans l'huile.It is known, in fact, that in internal combustion engines the lubricant is degraded during operation by fouling due to the formation of metallic and carbonaceous particles, by gradual destruction of the additives, and by dilution of the fuel in the oil.

Afin de limiter ces inconvénients, une solution consiste à augmenter la quantité d'huile circulant dans le moteur. Dans ce but, on peut envisager d'accroître la taille du bac à huile. Cependant, le volume disponible à cet effet est limité par l'environnement du moteur, à savoir la garde au sol, les autres fonctions moteur et les accessoires, ainsi que par les débattements des bielles et vilebrequin qui ne permettent d'augmenter le niveau d'huile qu'au risque d'entraîner le barbotage et la formation d'émulsion.In order to limit these disadvantages, one solution consists in increasing the quantity of oil circulating in the engine. For this purpose, one can consider increasing the size of the oil pan. However, the volume available for this purpose is limited by the environment of the engine, namely the ground clearance, other engine functions and accessories, as well as the deflections of the connecting rods and crankshaft that do not allow to increase the level of the engine. at the risk of sparging and emulsion formation.

La demande de brevet français n° 2 581 700 propose un dispositif comprenant une capacité auxiliaire distante, alimentée par un débit d'huile prélevé sur la cuvette, ou bac à huile, du circuit principal de lubrification du moteur au moyen de la pompe d'alimentation.The patent application French number 2,581,700 proposes a device comprising a remote auxiliary capacity, powered by an oil flow taken from the bowl, or oil tank, of the main engine lubrication circuit by means of the feed pump.

Ce dispositif connu présente toutefois l'inconvénient d'exiger un circuit de dérivation qui, par hypothèse, réduit la quantité d'huile réservée à la lubrification proprement dite. De plus, ce circuit est complexe puisqu'il met en oeuvre de nombreux conduits, des ajutages, des vannes d'arrêt, des clapets tarés, etc.This known device, however, has the disadvantage of requiring a bypass circuit which, by hypothesis, reduces the amount of oil reserved for the actual lubrication. In addition, this circuit is complex since it implements many ducts, nozzles, shut-off valves, calibrated valves, etc.

Aussi, le problème technique à résoudre par l'objet de la présente invention est de proposer un bac à huile pour moteur de véhicule automobile qui permettrait de réaliser de manière très simple et à moindre coût l'augmentation recherchée de la quantité d'huile de lubrification du moteur.Also, the technical problem to be solved by the object of the present invention is to propose an oil tank for a motor vehicle engine. which would make it possible very simply and at low cost the desired increase in the amount of lubricating oil of the engine.

La solution au problème technique posé consiste, selon la présente invention, en ce que ledit bac à huile comprend un réservoir principal alimenté par retour d'huile du bas moteur, et au moins un réservoir complémentaire alimenté par retour d'huile du haut moteur et comportant un moyen de transfert d'huile vers ledit réservoir principal.The solution to the technical problem that is posed, according to the present invention, in that said oil tank comprises a main tank fed by oil return from the low engine, and at least one additional tank fed by oil return from the top engine and comprising oil transfer means to said main tank.

Ainsi, comme on le verra en détail plus loin, le bac à huile conforme à l'invention est constitué d'au moins deux compartiments qui peuvent être accolés, et non distants comme dans le dispositif connu décrit plus haut. II s'agit, d'une part, du réservoir principal, équivalent à la cuvette habituellement présente dans un moteur de véhicule automobile, et dont le volume est limité par le débattement des bielles, et, d'autre part, au moins un réservoir complémentaire situé dans les volumes disponibles proches du réservoir principal, en dehors du débattement des bielles. Ce(s) réservoir(s) complémentaire(s) permet(tent) d'augmenter sensiblement le volume d'huile utilisable tout en formant à moindre surcoût un seul bac à huile compact d'encombrement réduit. L'augmentation de volume ainsi obtenu peut atteindre 50% ou plus.Thus, as will be seen in detail below, the oil tank according to the invention consists of at least two compartments which can be contiguous, and not distant as in the known device described above. It is, on the one hand, the main tank, equivalent to the bowl usually present in a motor vehicle engine, and whose volume is limited by the travel of the rods, and, secondly, at least one tank complementary located in the available volumes close to the main tank, apart from the travel of the connecting rods. This (these) tank (s) complement (s) allows (tent) to substantially increase the usable oil volume while forming at lower cost a single compact oil tank compact. The volume increase thus obtained can reach 50% or more.

On observera par ailleurs que le bac à huile conforme à l'invention ne nécessite aucune alimentation du réservoir complémentaire par prélèvement sur le circuit principal. II n'est donc nul besoin de conduits, de vannes, de clapets, ni d'accessoires divers, ce qui représente une grande simplification de réalisation et une sensible économie par rapport au dispositif connu de l'état de la technique.It will also be observed that the oil tank according to the invention does not require any supply of the additional tank by sampling on the main circuit. There is therefore no need for conduits, valves, valves, or miscellaneous accessories, which represents a great simplification of implementation and a significant saving compared to the known device of the state of the art.

Dans un mode de réalisation particulier, ledit moyen de transfert d'huile est constitué par un dispositif de trop-plein.In a particular embodiment, said oil transfer means is constituted by an overflow device.

Avantageusement, le réservoir complémentaire est alimenté par un conduit débouchant sensiblement dans le fond dudit réservoir complémentaire.Advantageously, the additional reservoir is fed by a conduit opening substantially in the bottom of said complementary reservoir.

La description qui va suivre en regard des dessins annexés, donnés à titre d'exemples non limitatifs, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.

La figure 1 est une vue en coupe d'un bac à huile conforme à l'invention.Figure 1 is a sectional view of an oil tank according to the invention.

La figure 2 est une vue en perspective du bac à huile de la figure 1.Figure 2 is a perspective view of the oil tank of Figure 1.

Sur les figures 1 et 2 est représenté un bac 10 à huile pour moteur de véhicule automobile.In Figures 1 and 2 is shown an oil tank 10 for a motor vehicle engine.

Comme on peut le voir sur les figures précitées, ledit bac 10 à huile est constitué de deux parties accolées :

  • un réservoir principal 11 sensiblement disposé en lieu et place de la cuvette habituelle, à proximité de la pompe à huile (non représentée) et dont le volume est limité par le débattement des bielles 20 afin d'éviter le phénomène de barbotage et la formation d'émulsion. Ce réservoir principal 11 est réalimenté par le retour d'huile du bas moteur, c'est-à-dire provenant de l'ensemble vilebrequin/bielles.
  • un réservoir complémentaire 12 en dehors du débattement des bielles 20 et alimenté par le retour d'huile du haut moteur par simple gravité au travers d'un conduit 121, sans recours à un quelconque système de pompage. Ce réservoir complémentaire 12 comporte en outre un moyen de transfert d'huile vers le réservoir principal 11, constitué dans l'exemple illustré aux figures 1 et 2 par un dispositif 122 de trop-plein.
As can be seen in the above figures, said oil tank 10 consists of two contiguous parts:
  • a main tank 11 substantially disposed in place of the usual bowl, near the oil pump (not shown) and whose volume is limited by the deflection of the connecting rods 20 to avoid the bubbling phenomenon and the formation of 'emulsion. This main tank 11 is supplied by the oil return of the low engine, that is to say from the crankshaft / connecting rod assembly.
  • a complementary tank 12 outside the deflection of the rods 20 and fed by the return of oil from the high engine by gravity through a conduit 121, without recourse to any pumping system. This additional tank 12 further comprises an oil transfer means to the main tank 11, constituted in the example illustrated in Figures 1 and 2 by a device 122 overflow.

On comprend de cette manière que, si le conduit 121 débouche de préférence au fond du réservoir complémentaire 12, l'huile provenant du haut moteur et portant des particules métalliques ou charbonneuses est diluée dans le volume du réservoir complémentaire 12 et remplacée dans le réservoir principal 11 par de l'huile de meilleure qualité traversant le trop-plein 122. D'autre part, cette configuration présente l'avantage que lesdites particules peuvent se déposer par gravité au fond du réservoir complémentaire 12 et donc être éliminées de la circulation de l'huile vers le réservoir principal 11.In this way, it is understood that, if the duct 121 preferably opens to the bottom of the complementary reservoir 12, the oil coming from the high engine and bearing metallic or carbonaceous particles is diluted in the volume of the complementary reservoir 12 and replaced in the main reservoir. 11 on the other hand, this configuration has the advantage that said particles can be deposited by gravity at the bottom of the complementary tank 12 and thus be eliminated from the circulation of the tank. oil to the main tank 11.

II est important de noter que l'invention n'est pas limitée à la présence d'un seul réservoir complémentaire, mais qu'elle peut également mettre en oeuvre une pluralité de réservoirs complémentaires disposés entre eux de manière à utiliser au mieux les volumes disponibles à proximité du réservoir principal.It is important to note that the invention is not limited to the presence of a single complementary reservoir, but that it can also implement a plurality of complementary reservoirs arranged between them so as to make best use of the available volumes. near the main reservoir.

Claims (3)

Bac à huile pour moteur de véhicule automobile, caractérisé en ce que ledit bac (10) à huile comprend un réservoir principal (11) alimenté par retour d'huile du bas moteur, et au moins un réservoir complémentaire (12) alimenté par retour d'huile du haut moteur et comportant un moyen (122) de transfert d'huile vers ledit réservoir principal (11).An oil tank for a motor vehicle engine, characterized in that said oil tank (10) comprises a main tank (11) supplied by low engine oil return, and at least one additional fuel tank (12) supplied by the engine oil return. engine oil and having oil transfer means (122) to said main tank (11). Bac à huile selon la revendication 1, caractérisé en ce que ledit moyen de transfert d'huile est constitué par un dispositif (122) de trop-plein.Oil tank according to claim 1, characterized in that said oil transfer means is constituted by a device (122) of overflow. Bac à huile selon l'une des revendications 1 ou 2, caractérisé en ce que le réservoir complémentaire (12) est alimenté par un conduit (121) débouchant sensiblement dans le fond dudit réservoir complémentaire.Oil tank according to one of claims 1 or 2, characterized in that the additional tank (12) is fed by a conduit (121) opening substantially in the bottom of said complementary tank.
EP06300966A 2005-09-29 2006-09-20 Oil sump for combustion engine Withdrawn EP1777383A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0552949A FR2891303B1 (en) 2005-09-29 2005-09-29 OIL TRAY FOR MOTOR VEHICLE MOTOR

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EP1777383A1 true EP1777383A1 (en) 2007-04-25

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EP06300966A Withdrawn EP1777383A1 (en) 2005-09-29 2006-09-20 Oil sump for combustion engine

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FR (1) FR2891303B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2941030A1 (en) * 2009-01-12 2010-07-16 Peugeot Citroen Automobiles Sa Fluid e.g. coolant, evacuation/introduction conduit connecting nozzle formation method for e.g. engine cylinder head of motor vehicle, involves machining outer face of hump for forming connecting surface of conduit
CN103089369A (en) * 2013-01-18 2013-05-08 无锡市贝尔机械有限公司 Diesel engine oil sump and casting technique
DE102012112789A1 (en) * 2012-12-20 2014-06-26 Dr. Ing. H.C. F. Porsche Ag Oil pan for motor vehicle with engine, has first reservoir in which first fluid mass flow is conveyed via first opening and second reservoir in which second fluid mass flow greater than first mass flow is conveyable via second opening
US9334769B2 (en) 2013-01-25 2016-05-10 Cummins Power Generation Ip, Inc. Apparatuses, systems, and methods for crankcase oil sump overfill protection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002256A1 (en) 2000-01-20 2001-08-02 Daimler Chrysler Ag Lubricating oil heating arrangement for vehicle engines.
US20020170524A1 (en) * 2001-03-16 2002-11-21 Lawrence Howard J. Cylinder block assembly with increased lubricant capacity

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10002256A1 (en) 2000-01-20 2001-08-02 Daimler Chrysler Ag Lubricating oil heating arrangement for vehicle engines.
US20020170524A1 (en) * 2001-03-16 2002-11-21 Lawrence Howard J. Cylinder block assembly with increased lubricant capacity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2941030A1 (en) * 2009-01-12 2010-07-16 Peugeot Citroen Automobiles Sa Fluid e.g. coolant, evacuation/introduction conduit connecting nozzle formation method for e.g. engine cylinder head of motor vehicle, involves machining outer face of hump for forming connecting surface of conduit
DE102012112789A1 (en) * 2012-12-20 2014-06-26 Dr. Ing. H.C. F. Porsche Ag Oil pan for motor vehicle with engine, has first reservoir in which first fluid mass flow is conveyed via first opening and second reservoir in which second fluid mass flow greater than first mass flow is conveyable via second opening
DE102012112789B4 (en) 2012-12-20 2023-11-09 Dr. Ing. H.C. F. Porsche Ag sump
CN103089369A (en) * 2013-01-18 2013-05-08 无锡市贝尔机械有限公司 Diesel engine oil sump and casting technique
US9334769B2 (en) 2013-01-25 2016-05-10 Cummins Power Generation Ip, Inc. Apparatuses, systems, and methods for crankcase oil sump overfill protection

Also Published As

Publication number Publication date
FR2891303B1 (en) 2007-12-14
FR2891303A1 (en) 2007-03-30

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