WO2020120231A1 - Heating lubricating trough for a gearbox - Google Patents

Heating lubricating trough for a gearbox Download PDF

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Publication number
WO2020120231A1
WO2020120231A1 PCT/EP2019/083526 EP2019083526W WO2020120231A1 WO 2020120231 A1 WO2020120231 A1 WO 2020120231A1 EP 2019083526 W EP2019083526 W EP 2019083526W WO 2020120231 A1 WO2020120231 A1 WO 2020120231A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
lubrication
gearbox
flow
chute according
Prior art date
Application number
PCT/EP2019/083526
Other languages
French (fr)
Inventor
Fabrice Riesenmey
Original Assignee
Renault S.A.S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault S.A.S filed Critical Renault S.A.S
Publication of WO2020120231A1 publication Critical patent/WO2020120231A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0478—Synchromesh devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears
    • F16H57/0494—Gearings with spur or bevel gears with variable gear ratio or for reversing rotary motion

Definitions

  • the present invention relates to gearboxes with parallel shafts. It concerns the
  • the lubricating oil of the gearboxes tends to seize the rings of synchronizers at low temperature. "Synchro bonding" is a persistent phenomenon, which requires the use of particularly expensive specific oils.
  • the present invention aims to accelerate the heating of synchronizing groups, by using existing parts in the gearbox, so as not to impact
  • the chute contains heating means ensuring the rise in temperature of the oil flowing in its flow and discharge zone.
  • the oil heating means are integrated into the floor of the flow zone and
  • FIG. 1 is an overall diagram of the device.
  • FIG. 2 details its power supply.
  • the chute 1 which is the subject of the invention is a lubrication chute for a gear train (not shown) of a gearbox, rotating in a sealed casing of mechanism and differential.
  • This casing forms in its lower part a lubricant reservoir, where the bottom of the differential crown is immersed.
  • the rotation of the differential crown causes the lubricant to rise and be projected towards the chute 1, which captures the projected lubricant and the
  • the chute 1 comprises a collection zone 3 receiving the oil projected towards the top of the box by the crown of the
  • the gutter 1 is retained in the casing 2, by at least two fixing supports 5a, 5b visible in the diagram.
  • the discharge area 4 is divided along its length, by a wall, 4a delimiting two parallel sprinkler sectors 4b, 4c.
  • the first sector 4b has on its lower face orifices 6 provided for example with pouring spouts 7, extending downward, so as to orient the oil on the points to be lubricated, in particular the groups of
  • the spouts 7 are preferably calibrated to guarantee good lubrication of all the groups of pinions.
  • the second sector 4c has no intermediate discharge points. It ends at its end opposite to the collection zone 3, by a weir 8 watering the bearing of the pinion shaft.
  • the chute 1 contains heating means ensuring the rise in temperature of the oil flowing therein in its flow and discharge zone.
  • These heating means are preferably integrated into the floor of the flow and discharge zone. They consist of resistant wires 9, integrated into the floor of the flow and
  • One of the supports 5b of the chute 1 has a hollow tube 10, for the passage of the supply cables 12 of the heating resistor 9, through the casing 2.
  • the resistive wires 9 are supplied electrically, from the outside of the box.
  • the cables 12 pass through the casing 2, inside the sealed tube 10.
  • the tube 10 in this example belongs to one of the fasteners 5b. It is carried in the casing 2, through a tight seal, for example an O-ring 11.
  • the gutter 1 is preferably metallic, for example made of an alloy of aluminum, copper and / or brass.
  • the resistances are preferably metallic, for example aluminum.
  • the integration of the resistant wire network 9 at the heart of the gutter 1 can be carried out by insertion in the folding of metal sheets, or during the pressure casting of the gutter. Finally, the incorporation of at least one micro thermal probe (not shown) at the bottom of the oil reserve of the box, is necessary to ensure the control and regulation of the heating of the oil in the chute.
  • the invention takes advantage of the optimizations already carried out on the architectures of known routing gutters, to insert heating resistors therein.
  • the oil is heated by conduction on the floor of the gutter.
  • the contact surface with the oil is large, and the targeted points are sprayed with heated oil.
  • the chute discharges the heated oil directly onto the synchronization groups of the gear line by the discharge spouts 7. It also pours the heated oil onto the bearing of the shaft supporting the gear line, opposite the differential .
  • the oil is channeled on the points to be lubricated, which are also the points to be heated as quickly as possible, to guarantee the expected results, in particular the elimination of synchronizer jams, the improvement of the passage performance and the CO 2 balance. by reducing friction in the box.
  • the system can be controlled in real time by a simplified current supply control system.
  • the proposed arrangements allow the oil directed to the points to be lubricated to be warmed up, without affecting its path or the development constraints of the lubrication circuit.
  • the heating of the synchronization groups is ensured by extreme temperatures, as soon as the vehicle is moved. Thanks to the invention, the quality of the gear changes during the start-up phase of the vehicle is guaranteed by excessively cold outside temperatures. The phenomenon of "sticking" of synchronizers is avoided. The wear of parts dogging due to cracking is reduced. The efficiency of the gearbox, as well as the consumption / CO emissions balance during the oil heating phase, are improved. The rapid reheating of the targeted points is carried out without adding components to the casing which could impede or modify the calibrated hydraulic flows during development. In conclusion, the invention makes it possible to guarantee, for a very reduced operating blow, the rapid heating of the targeted functional groups, for example the synchronization groups of the primary or secondary shafts of a gearbox.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

Lubricating trough (1) for lubricating a gearbox gear train rotating in a sealed casing of the gearbox and for lubricating its differential, having a capturing region (3) receiving the oil projected towards the top of the gearbox by the differential ring gear and a region (4) for flow and discharge onto targeted lubrication points along the gear train, characterized in that it contains heating means (9) for raising the temperature of the oil flowing into said trough in its flow and discharge region (4).

Description

DESCRIPTION DESCRIPTION
TITRE : GOULOTTE DE LUBRIFICATION CHAUFFANTTE DE BOITE DE TITLE: BOX HEATING LUBRICATION CHUTE
VITESSES SPEEDS
La présente invention se rapporte aux boîtes de vitesses à engrenages et à arbres parallèles . Elle concerne la The present invention relates to gearboxes with parallel shafts. It concerns the
lubrification des engrenages de boîte de vitesses, à partir de l'huile retenue au fond de son carter. lubrication of the gearbox gears, from the oil retained at the bottom of its casing.
Plus précisément, elle a pour objet une goulotte de More specifically, it relates to a chute of
lubrification d'une ligne d'engrenages de boîte de vitesses en rotation dans un carter étanche de la boîte et de son lubrication of a line of gearboxes in rotation in a sealed casing of the gearbox and its
différentiel, présentant une zone de captation recevant l'huile projetée vers le haut de la boîte par la couronne du differential, presenting a collection zone receiving the oil projected towards the top of the box by the crown of the
différentiel, et une zone d'écoulement et de déversement sur des points de lubrification ciblés le long de la ligne d'engrenages. De tels systèmes de distribution d'huile dans une boîte de vitesses, sont illustrés notamment par la publication FR differential, and a flow and spill area on targeted lubrication points along the gear line. Such oil distribution systems in a gearbox are illustrated in particular by the publication FR
3 044 377, à laquelle on pourra se référer. 3,044,377, to which reference may be made.
L'huile de lubrification des boîtes de vitesses, tend à gripper les bagues de synchroniseurs à basse température. Le « collage des synchros » est un phénomène persistant, qui nécessite l'utilisation d'huiles spécifiques particulièrement coûteuses. The lubricating oil of the gearboxes tends to seize the rings of synchronizers at low temperature. "Synchro bonding" is a persistent phenomenon, which requires the use of particularly expensive specific oils.
En conditions extrêmes de roulage par grand froid, des In extreme cold driving conditions,
« craquements » sont perceptibles dans la boîte, et certains passages de vitesses sont refusés. En dépit de l'adaptation des huiles aux conditions météorologiques, ces difficultés "Crackles" are perceptible in the gearbox, and certain gear changes are refused. Despite the adaptation of oils to weather conditions, these difficulties
persistent, tant que la température de l'huile de lubrification reste inférieure à -10°c. Les « collages de synchro » persist as long as the lubricating oil temperature remains below -10 ° C. "Synchro Collages"
ralentissent la chaîne cinématique, et diminuent le rendement de la boîte. Ils augmentent, par voie de conséquence, les émissions de dioxyde de carbone (CO2) du véhicule. slow down the kinematic chain, and decrease the efficiency of the gearbox. They consequently increase the vehicle's carbon dioxide (CO 2 ) emissions.
En implantant des réchauffeurs d'huiles dans la boîte, notamment dans le fond du carter, on peut réduire ce phénomène. Les véhicules commercialisés dans certains pays très froids, sont pourvus à cet effet, de systèmes de réchauffage d'huile, intégrés dans la réserve d'huile principale de la boîte. Ces systèmes sont généralement équipés de thermoplongeurs. Ils sont efficaces, mais ne ciblent pas directement les groupes de synchronisation. L'huile se réchauffe d'une manière homogène, mais très progressive. By installing oil heaters in the box, especially in the bottom of the housing, this phenomenon can be reduced. Vehicles sold in certain very cold countries are fitted with oil heating systems for this purpose, integrated in the main oil reserve in the gearbox. These systems are generally equipped with immersion heaters. They are effective, but do not directly target synchronization groups. The oil heats up evenly, but very gradually.
Un autre inconvénient des réchauffeurs d'huile à thermoplongeurs connus, provient de leur encombrement dans le réservoir d'huile. Leur présence peut avoir des répercussions négatives sur les flux d'huile, car ces derniers sont impactés par le moindre changement d'architecture interne de la boîte. En effet, l'implantation de toute pièce additionnelle dans une boîte de vitesses, remet en cause la mise au point de sa lubrification. Another disadvantage of oil heaters with known immersion heaters comes from their size in the oil tank. Their presence can have negative repercussions on the oil flows, since the latter are affected by the slightest change in the internal architecture of the gearbox. Indeed, the installation of any additional part in a gearbox, calls into question the development of its lubrication.
La présente invention vise à accélérer le réchauffement des groupes synchroniseurs, en utilisant des pièces existantes dans la boîte de vitesses, de manière à ne pas impacter The present invention aims to accelerate the heating of synchronizing groups, by using existing parts in the gearbox, so as not to impact
l'acheminement des flux d'huile vers les points de the routing of oil flows to the points of
lubrification . lubrication.
Dans ce but la goulotte renferme des moyens de réchauffement assurant l'élévation en température de l'huile s'écoulant dans sa zone d'écoulement et de déversement. For this purpose the chute contains heating means ensuring the rise in temperature of the oil flowing in its flow and discharge zone.
De préférence, les moyens de réchauffement de l'huile sont intégrés dans le plancher de la zone d' écoulement et de Preferably, the oil heating means are integrated into the floor of the flow zone and
déversement . spill.
La présente invention sera mieux comprise à la lecture de la description suivante d'un mode de réalisation non limitatif de celle-ci, en se référant aux dessins annexés, sur lesquels. The present invention will be better understood on reading the following description of a non-limiting embodiment thereof, with reference to the accompanying drawings, in which.
[Fig. 1] est un schéma d'ensemble du dispositif. [Fig. 1] is an overall diagram of the device.
[Fig. 2] détaille son alimentation électrique. [Fig. 2] details its power supply.
La goulotte 1 faisant l'objet de l'invention est une goulotte de lubrification d'un train d'engrenages (non représenté) de boîte de vitesses, en rotation dans un carter étanche de mécanisme et de différentiel. Ce carter forme dans sa partie inférieure un réservoir de lubrifiant, où est immergé le bas de la couronne du différentiel. La rotation de la couronne de différentiel provoque l'élévation et la projection du lubrifiant en direction de la goulotte 1, qui capte le lubrifiant projeté et le The chute 1 which is the subject of the invention is a lubrication chute for a gear train (not shown) of a gearbox, rotating in a sealed casing of mechanism and differential. This casing forms in its lower part a lubricant reservoir, where the bottom of the differential crown is immersed. The rotation of the differential crown causes the lubricant to rise and be projected towards the chute 1, which captures the projected lubricant and the
distribue sur des points de lubrification ciblés du train d' engrenages . La goulotte 1 comprend une zone de captation 3 recevant l'huile projetée vers le haut de la boîte par la couronne du distributes on targeted lubrication points of the gear train. The chute 1 comprises a collection zone 3 receiving the oil projected towards the top of the box by the crown of the
différentiel, et une zone d'écoulement et de déversement 4 sur des points de lubrification ciblés le long de la ligne differential, and a flow and discharge zone 4 at targeted lubrication points along the line
d'engrenages. La gouttière 1 est retenue dans le carter 2, par au moins deux supports de fixation 5a, 5b visibles sur le schéma. La zone de déversement 4 est divisée sur sa longueur, par une paroi, 4a délimitant deux secteurs d'arrosage parallèles 4b, 4c. Le premier secteur 4b présente sur sa face inférieure des orifices 6 pourvus par exemple de becs de déversement 7, s'étendant vers le bas, de manière à orienter l'huile sur les points à lubrifier, en particulier les groupes de of gears. The gutter 1 is retained in the casing 2, by at least two fixing supports 5a, 5b visible in the diagram. The discharge area 4 is divided along its length, by a wall, 4a delimiting two parallel sprinkler sectors 4b, 4c. The first sector 4b has on its lower face orifices 6 provided for example with pouring spouts 7, extending downward, so as to orient the oil on the points to be lubricated, in particular the groups of
synchronisation. Les becs 7 sont de préférence calibrés pour garantir une bonne lubrification de tous les groupes de pignons. Le second secteur 4c est dépourvu de points de déversement intermédiaires. Il se termine à son extrémité opposée à la zone de captation 3, par un déversoir 8 arrosant le palier de l'arbre de pignons . synchronization. The spouts 7 are preferably calibrated to guarantee good lubrication of all the groups of pinions. The second sector 4c has no intermediate discharge points. It ends at its end opposite to the collection zone 3, by a weir 8 watering the bearing of the pinion shaft.
Conformément à l'invention, la goulotte 1 renferme des moyens de réchauffement assurant l'élévation en température de l'huile s'écoulant dans celle-ci dans sa zone d'écoulement et de déversement. Ces moyens de réchauffement sont intégrés de préférence dans le plancher de la zone d'écoulement et de déversement. Ils sont constitués par des fils résistants 9, intégrés dans le plancher de la zone d' écoulement et de According to the invention, the chute 1 contains heating means ensuring the rise in temperature of the oil flowing therein in its flow and discharge zone. These heating means are preferably integrated into the floor of the flow and discharge zone. They consist of resistant wires 9, integrated into the floor of the flow and
déversement 4. spill 4.
Un des supports 5b de la goulotte 1 présente un tube creux 10, pour le passage des câbles d'alimentation 12 de la résistance chauffante 9, au travers du carter 2. Les fils résistants 9 sont alimentés électriquement, à partir de l'extérieur de la boîte. Les câbles 12 traversent le carter 2, à l'intérieur du tube étanche 10. Le tube 10 appartient dans cet exemple à l'une des fixations 5b. Il est porté dans le carter 2, au travers d'un joint étanche, par exemple un joint torique 11. One of the supports 5b of the chute 1 has a hollow tube 10, for the passage of the supply cables 12 of the heating resistor 9, through the casing 2. The resistive wires 9 are supplied electrically, from the outside of the box. The cables 12 pass through the casing 2, inside the sealed tube 10. The tube 10 in this example belongs to one of the fasteners 5b. It is carried in the casing 2, through a tight seal, for example an O-ring 11.
La gouttière 1 est de préférence métallique, par exemple en alliage d'aluminium, de cuivre et/ou de laiton. Les résistances sont de préférence métalliques, par exemple en aluminium. The gutter 1 is preferably metallic, for example made of an alloy of aluminum, copper and / or brass. The resistances are preferably metallic, for example aluminum.
L' intégration du réseau de fil résistant 9 au cœur de la gouttière 1 peut être effectué par insertion au pliage de feuilles métalliques, ou lors de la coulée sous pression de la gouttière. Enfin, l'incorporation d'au moins une micro sonde thermique (non représentée) au fond de la réserve d'huile de la boîte, est nécessaire pour assurer le contrôle et la régulation du réchauffage de l'huile dans la goulotte. The integration of the resistant wire network 9 at the heart of the gutter 1 can be carried out by insertion in the folding of metal sheets, or during the pressure casting of the gutter. Finally, the incorporation of at least one micro thermal probe (not shown) at the bottom of the oil reserve of the box, is necessary to ensure the control and regulation of the heating of the oil in the chute.
L' invention tire profit des optimisations déjà réalisées sur les architectures des gouttières d'acheminement connues, pour y insérer des résistances chauffantes. Le réchauffement de l'huile se fait par conduction sur le plancher de la gouttière. La surface de contact avec l'huile est importante, et les points ciblés sont arrosés par de l'huile réchauffée. La goulotte déverse l'huile réchauffée directement sur les groupes de synchronisation de la ligne d'engrenages par les becs de déversement 7. Elle déverse également l'huile réchauffée sur le roulement de l'arbre supportant la ligne d'engrenage, opposé au différentiel . The invention takes advantage of the optimizations already carried out on the architectures of known routing gutters, to insert heating resistors therein. The oil is heated by conduction on the floor of the gutter. The contact surface with the oil is large, and the targeted points are sprayed with heated oil. The chute discharges the heated oil directly onto the synchronization groups of the gear line by the discharge spouts 7. It also pours the heated oil onto the bearing of the shaft supporting the gear line, opposite the differential .
L'huile est canalisée sur les points à lubrifier, qui sont également les points à réchauffer au plus vite, pour garantir les résultats escomptés, notamment la suppression des grippages de synchroniseur, l'amélioration de la prestation de passage et du bilan en CO2 par réduction des frottements dans la boîte. Le système peut être contrôlé en temps réel par un système simplifié de régulation d'alimentation en courant. The oil is channeled on the points to be lubricated, which are also the points to be heated as quickly as possible, to guarantee the expected results, in particular the elimination of synchronizer jams, the improvement of the passage performance and the CO 2 balance. by reducing friction in the box. The system can be controlled in real time by a simplified current supply control system.
Les dispositions proposées permettent de réchauffer l'huile dirigée sur les points à lubrifier, sans incidence sur son trajet, ni sur les contraintes de mise au point du circuit de lubrification . The proposed arrangements allow the oil directed to the points to be lubricated to be warmed up, without affecting its path or the development constraints of the lubrication circuit.
Le réchauffage des groupes de synchronisation est assuré par des températures extrêmes, dès la mise en déplacement du véhicule. Grâce à l'invention, la qualité des passages de vitesses pendant la phase de mise en route du véhicule est garantie par des températures extérieures excessivement froides. Le phénomène de « collage » des synchroniseurs est évité. L'usure des pièces de crabotage liée aux craquements est réduite. Le rendement de la boîte de vitesses, ainsi que le bilan consommation / émissions de CO pendant la phase de réchauffement de l'huile, sont améliorés. Le réchauffement rapide des points visés, s'effectue sans rajouter dans le carter, de composants qui pourraient entraver, ou modifier les flux hydrauliques calibrés lors de la mise au point. En conclusion, l'invention permet de garantir, pour un coup d'exploitation très réduit, le réchauffement rapide des groupes fonctionnels ciblés, par exemple les groupes de synchronisation des arbres primaire ou secondaire d'une boîte de vitesses . The heating of the synchronization groups is ensured by extreme temperatures, as soon as the vehicle is moved. Thanks to the invention, the quality of the gear changes during the start-up phase of the vehicle is guaranteed by excessively cold outside temperatures. The phenomenon of "sticking" of synchronizers is avoided. The wear of parts dogging due to cracking is reduced. The efficiency of the gearbox, as well as the consumption / CO emissions balance during the oil heating phase, are improved. The rapid reheating of the targeted points is carried out without adding components to the casing which could impede or modify the calibrated hydraulic flows during development. In conclusion, the invention makes it possible to guarantee, for a very reduced operating blow, the rapid heating of the targeted functional groups, for example the synchronization groups of the primary or secondary shafts of a gearbox.

Claims

REVENDICATIONS
1. Goulotte de lubrification (1) de ligne d'engrenages en rotation dans un carter étanche (2) de boîte de vitesses et de différentiel, présentant une zone de captation (3) de l'huile projetée vers le haut de la boîte par la couronne du 1. Lubrication chute (1) of a rotating gear line in a sealed casing (2) of gearbox and differential, having a catchment area (3) of the oil projected towards the top of the box by the crown of
différentiel et une zone d'écoulement et de déversement (4) distribuant l'huile sur des points de lubrification ciblés le long de la ligne d'engrenages, caractérisée en ce qu'elle renferme des moyens de réchauffement (9) assurant l'élévation en température de l'huile s'écoulant dans sa zone d'écoulement et de déversement (4) . differential and a flow and discharge zone (4) distributing the oil to targeted lubrication points along the gear line, characterized in that it contains heating means (9) ensuring the elevation in temperature of the oil flowing in its flow and discharge area (4).
2. Goulotte de lubrification selon la revendication 1, caractérisée en ce que les moyens de réchauffement de l'huile (9) sont intégrés dans le plancher de la zone d'écoulement et de déversement (4) . 2. Lubrication chute according to claim 1, characterized in that the oil heating means (9) are integrated in the floor of the flow and discharge zone (4).
3. Goulotte de lubrification selon la revendication 2, caractérisée en ce que les moyens de réchauffement (9) sont constitués par un réseau de fils résistants circulant dans le plancher de zone d'écoulement et de déversement (4) . 3. Lubrication chute according to claim 2, characterized in that the heating means (9) consist of a network of resistant wires circulating in the floor of the flow and discharge zone (4).
4. Goulotte de lubrification selon la revendication 3, caractérisée en ce que les fils résistants (9) sont reliés à des câbles d'alimentation électrique (12) au travers du carter (2) de la boîte . 4. Lubrication chute according to claim 3, characterized in that the resistant wires (9) are connected to electrical supply cables (12) through the casing (2) of the box.
5. Goulotte de lubrification selon la revendication 3 ou 4, caractérisée en ce les fils résistants (9) sont intégrés au cœur de son plancher par pliage de feuilles métalliques. 5. Lubrication chute according to claim 3 or 4, characterized in that the resistant son (9) are integrated into the heart of its floor by folding metal sheets.
6. Goulotte de lubrification selon la revendication 3 ou 4, caractérisée en ce que les fils résistants (9) sont intégrés dans le plancher, lors de la réalisation de celui-ci par un procédé de coulée sous pression. 6. Lubrication chute according to claim 3 or 4, characterized in that the resistant son (9) are integrated into the floor, during the production thereof by a pressure casting process.
7. Goulotte de lubrification selon l'une des revendications précédentes, caractérisée en ce qu'elle déverse de l'huile réchauffée sur les groupes de synchronisation de la ligne d' engrenages . 7. Lubrication chute according to one of the preceding claims, characterized in that it pours the heated oil on the synchronization groups of the line of gears.
8. Goulotte de lubrification selon l'une des revendications précédentes, caractérisé en ce qu'elle déverse de l'huile réchauffée sur le roulement de l'arbre supportant la ligne d'engrenage qui est opposé à la zone de captation (3) . 8. Lubrication chute according to one of the preceding claims, characterized in that it pours oil heated on the bearing of the shaft supporting the gear line which is opposite the capture zone (3).
PCT/EP2019/083526 2018-12-10 2019-12-03 Heating lubricating trough for a gearbox WO2020120231A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1872573 2018-12-10
FR1872573A FR3089588B1 (en) 2018-12-10 2018-12-10 HEATED GEARBOX LUBRICATION CHUTE

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3118112A1 (en) 2020-12-21 2022-06-24 Renault S.A.S. GEARBOX LUBRICATION CHANNEL AND GEARBOX COMPRISING SUCH A CHANNEL RETAINED ON A FORK SHAFT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052595A1 (en) * 2009-11-10 2011-05-12 GM Global Technology Operations LLC, Detroit Lubricating system for a vehicle transmission
US20140290922A1 (en) * 2013-03-28 2014-10-02 Dana Canada Corporation Heat Exchanger And System For Warming And Cooling A Fluid Circulating In A Housing
US9360104B1 (en) * 2014-12-18 2016-06-07 Ford Global Technologies, Llc Driveline thermal and lubricant flow management
FR3044377A1 (en) 2015-11-27 2017-06-02 Renault Sas LUBRICATING CHUTE OF A GEARBOX GEAR TRAIN

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052595A1 (en) * 2009-11-10 2011-05-12 GM Global Technology Operations LLC, Detroit Lubricating system for a vehicle transmission
US20140290922A1 (en) * 2013-03-28 2014-10-02 Dana Canada Corporation Heat Exchanger And System For Warming And Cooling A Fluid Circulating In A Housing
US9360104B1 (en) * 2014-12-18 2016-06-07 Ford Global Technologies, Llc Driveline thermal and lubricant flow management
FR3044377A1 (en) 2015-11-27 2017-06-02 Renault Sas LUBRICATING CHUTE OF A GEARBOX GEAR TRAIN

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FR3089588B1 (en) 2022-01-07

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