FR2589968A1 - Device for greasing a shaft control of a motor vehicle - Google Patents

Device for greasing a shaft control of a motor vehicle Download PDF

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Publication number
FR2589968A1
FR2589968A1 FR8612777A FR8612777A FR2589968A1 FR 2589968 A1 FR2589968 A1 FR 2589968A1 FR 8612777 A FR8612777 A FR 8612777A FR 8612777 A FR8612777 A FR 8612777A FR 2589968 A1 FR2589968 A1 FR 2589968A1
Authority
FR
France
Prior art keywords
axle
oil
greasing
clutch
motor vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8612777A
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French (fr)
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FR2589968B1 (en
Inventor
Herwig Leinfellner
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.)
Steyr Daimler Puch AG
Original Assignee
Steyr Daimler Puch AG
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 Steyr Daimler Puch AG filed Critical Steyr Daimler Puch AG
Publication of FR2589968A1 publication Critical patent/FR2589968A1/en
Application granted granted Critical
Publication of FR2589968B1 publication Critical patent/FR2589968B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F16N—LUBRICATING
    • F16N19/00—Lubricant containers for use in lubricators or lubrication systems
    • F16N19/006—Maintaining oil level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R17/00—Arrangements or adaptations of lubricating systems or 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
    • F16H57/0447—Control of lubricant levels, e.g. lubricant level control dependent on temperature
    • 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
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0483—Axle or inter-axle differentials
    • 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
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • 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
    • F16H57/0457—Splash lubrication

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

Abstract

The shaft control 4 of an axle 3 which may occasionally be coupled by a clutch device 2, 10 to a permanently driven motor vehicle axle 1, must have a greasing device, in the field of the greasing of gears by oils splash lubrication, by means of which the losses due to the oils splash lubrication are eliminated when the axle 3 rotates without load. For this purpose a greasing device has been provided which is actuated automatically by the clutch device 2, 10 and which makes it possible to raise the level of oil in the sump by engaging the axle 3.

Description

L'invention concerne un dispositif de graissage par barbotage des engrenages de La commande d'arbre d'un essieu moteur d'un véhicule automobile pouvant être accouplé occasionnellement à un essieu entraîné en continu au moyen d'un dispositif d'embrayage. The invention relates to a device for greasing by bubbling the gears of the shaft control of a driving axle of a motor vehicle which can be occasionally coupled to a continuously driven axle by means of a clutch device.

Lorsque, par une position correspondante du dispositif d'embrayage on libère L'essieu moteur pouvant être découplé, et donc lorsque l'entraînement du véhicule est assuré uniquement par L'essieu entraîné en continu, La dissipation de puissance au niveau de l'engrênement dans la commande d'arbre de l'essieu débrayé diminue ainsi que les pertes par frottement dans les paliers ; cependant il subsiste une dissipation d'énergie résultant du barbotage des engrenages dans le carter d'huile de graissage et cella peut atteindre une quantité d'énergie notable à vitesse élevée de conduite. When, by a corresponding position of the clutch device, the driving axle can be released which can be decoupled, and therefore when the vehicle is driven only by the continuously driven axle, the power dissipation at the level of the gear in the shaft control of the disengaged axle decreases as well as the friction losses in the bearings; however, there is a dissipation of energy resulting from the bubbling of the gears in the lubricating oil sump and this can reach a significant amount of energy at high driving speed.

On connait déjà par te document EP A 0 067 639 une commande d'arbre dont le boîtier comporte une chambre auxiliaire ou chambre d'accumulation qui se remplit d'huile de barbotage lors du barbotage des engrenages et qui comporte un orifice de retour dans le carter d'huile reLativement étroit. Ainsi, pendant le fonctionnement le niveau d'huile dans le carter s'abaisse puisque l'huile de barbotage s'accumule dans La chambre auxiliaire ou d'accumulation et ne retourne dans Le carter d'huile par L'orifice de retour étroit qu'en quantité réduite ; cependant il s'agit ici d'un entrainement d'arbre simple n'étant pas destiné à un arbre embrayage si bien que le phénomène d'abaissement de l'huile de graissage dans le carter n'est en aucune manière en relation avec la puissance de transmission de
L'arbre correspondant.Document EP A 0 067 639 already discloses a shaft control, the housing of which comprises an auxiliary chamber or accumulation chamber which is filled with bubbling oil during the bubbling of the gears and which comprises a return orifice in the relatively narrow oil pan. Thus, during operation, the oil level in the sump decreases since the bubbling oil accumulates in the auxiliary or accumulation chamber and does not return to the oil sump through the narrow return port that 'in reduced quantity; however, this is a simple shaft drive which is not intended for a clutch shaft so that the phenomenon of lowering of the lubricating oil in the casing is in no way related to the transmission power of
The corresponding tree.

Le but de l'invention est de réaliser un dispositif de graissage du type décrit ci-dessus au moyen duquel ta perte due au barbotage quand L'essieu est débrayé est
pratiquement éliminée.The object of the invention is to provide a lubrication device of the type described above by means of which your loss due to bubbling when the axle is disengaged is
practically eliminated.

Ce but est atteint par l'invention du fait qu'il
est prévu un dispositif de commande activé automatiquement par l'embrayage pour élever le niveau d'huile dans le carter
lorsque L'essieu est embrayé.This object is achieved by the invention because it
a control device is automatically activated by the clutch to raise the oil level in the crankcase
when The axle is engaged.

Dans le cas où l'essieu est embrayé à un essieu entraîne de manière continue, Le dispositif de commande est actionné automatiquement dans le sens d'une élévation du niveau d'huile dans le carter ce qui implique qu'il se trouve une quantité d'huile suffisante lors de la transmission de puissance pour que l'on puisse réduire cette quantité d'huile afin de diminuer La perte due au barbotage quand l'essieu en cause est découplé et qu'il n'y a plus de transmission de puissance. In the case where the axle is engaged to an axle drives continuously, the control device is actuated automatically in the direction of an increase in the oil level in the crankcase which implies that there is a quantity of sufficient oil during power transmission so that this quantity of oil can be reduced in order to decrease The loss due to splashing when the axle in question is decoupled and that there is no more power transmission .

Le dispositif de commande peut être réalisé de diverses manières. Dans le cas de la disposition connue d'une chambre d'accumulation se remplissant d'huile de barbotage et possédant un orifice de retour dans le carter,
Le dispositif de commande selon l'invention comprend une vanne, de préférence une électro-vanne pour l'orifice de retour, qui ferme L'écoulement en retour lorsque L'essieu est débrayé et qui prend une position d'ouverture lors de L'arrêt du moteur ou l'interruption de son circuit d'excitation. Du fait que L'orifice de retour est libéré lorsque le moteur est à l'arrêt ou lorsque le circuit d'excitation est ouvert, il est possible d'extraire l'huile de graissage du boitier de la commande d'arbre sans que de l'huile résiduelle soit retenue dans la chambre d'accumulation.En outre lors du rétablissement du fonctionnement par entraine- ment à L'aide des deux essieux, la totalite de la quantité d'huile est disponible immédiatement dans le carter. The control device can be produced in various ways. In the case of the known arrangement of an accumulation chamber filling with bubbling oil and having a return orifice in the casing,
The control device according to the invention comprises a valve, preferably a solenoid valve for the return orifice, which closes the return flow when the axle is disengaged and which assumes an open position during the engine shutdown or interruption of its excitation circuit. Because the return port is released when the engine is stopped or when the excitation circuit is open, it is possible to extract the lubricating oil from the shaft control unit without having to the residual oil is retained in the accumulation chamber. In addition, when the drive is restored to operation using the two axles, the entire quantity of oil is immediately available in the crankcase.

Le dispositif de commande peut également comprendre un piston qui libère ou obstrue une proLongation cylindrique du boîtier de la commande d'arbre au voisinage du carter. The control device may also include a piston which releases or obstructs a cylindrical extension of the shaft control housing in the vicinity of the casing.

Dans ce cas le volume global prévu pour la rétention d'huile peut être augmenté ou diminué à l'aide du piston pour parvenir à l'abaissement ou l'élèvation souhaitée de la surface libre de l'huile de graissage.In this case the overall volume provided for oil retention can be increased or decreased using the piston to achieve the desired lowering or raising of the free surface of the lubricating oil.

La liaison entre le dispositif de commande et la vanne ou l'électro-vanne ou le piston peut être par voie mécanique, pneumatique ou hydraulique, mais, au mieux, par voie électrique. The connection between the control device and the valve or the solenoid valve or the piston can be mechanical, pneumatic or hydraulic, but, at best, electrically.

Un mode de réalisation de l'invention est représen- té à titre d'exemple au dessin annexé dans lequel
- la figure 1 montre en coupe une commande d'arbre équipée du dispositif de graissage selon l'invention.An embodiment of the invention is shown by way of example in the appended drawing in which
- Figure 1 shows in section a shaft control equipped with the lubrication device according to the invention.

- la figure 2 illustre une variante de réalisation de la commande d'arbre dans une représentation identique,
- la figure 3 est une vue schematique de dessus de la disposition d'ensemble pour un véhicule automobile.FIG. 2 illustrates an alternative embodiment of the shaft control in an identical representation,
- Figure 3 is a schematic top view of the overall arrangement for a motor vehicle.

Sur la figure 3 on voit un essieu 1 d'un véhicule automobile entrainé de manière permanente, auquel un second essieu 3 est accouplable et découplable au moyen d'un embrayage 2. Cet essieu embrayabLe occasionnellement comporte une commande d'arbre 4 (figure 1 et 2). In FIG. 3, an axle 1 of a permanently driven motor vehicle is seen, to which a second axle 3 can be coupled and uncoupled by means of a clutch 2. This clutch axle occasionally has a shaft control 4 (FIG. 1 and 2).

Dans Le boitier 5 de la commande d'arbre, on a prévu une chambre d'accumulation 6 qui se remplit d'huile de barbotage pendant le fonctionnement et qui possède un orifice 7 de retour dans le carter d'huite 8. L'orifice 7 de retour est pourvu d'une vanne (soupape) 9 magnétique qui est maintenue en position d'ouverture par un ressort et en position de fermeture par l'éLectro-aimant agissant contre la force du ressort. a position représentée en figure 3 est celle dans laquelle L'embrayage 2 est ouvert et L'essieu 3 est débrayé.Le circuit d'excitation de L'élec- tro-vanne 9 est fermé et l'électro-vanne 9 obture L'orifice de retour 7 de manière que par le barbotage , l'huile de graissage du carter vienne s'accumuler dans la chambre d'accumulation 6 et que la surface libre de l'huile dans le boîtier 5 s'abaisse. Si en revanche l'embrayage 2 établissant la connexion est fermé au moyen du levier à main 10,
L'essieu 3 étant embrayé pour être moteur, le circuit d'excitation de l'electro-vanne 9 est interrompu, le ressort devient opérant et l'orifice de retour 7 est libéré ; ce qui entraine une élévation de la surface libre de L'huile dans le carter 8 puisque l'huile peut s'écouler de la chambre d'accumulation vers le boîtier.In the casing 5 of the shaft control, an accumulation chamber 6 is provided which is filled with bubbling oil during operation and which has an orifice 7 returning to the oil pan 8. The orifice 7 return is provided with a valve 9 which is held in the open position by a spring and in the closed position by the electromagnet acting against the force of the spring. he position shown in Figure 3 is that in which the clutch 2 is open and the axle 3 is disengaged. The excitation circuit of the solenoid valve 9 is closed and the solenoid valve 9 closes L ' return orifice 7 so that by bubbling, the lubricating oil of the casing comes to accumulate in the accumulation chamber 6 and that the free surface of the oil in the housing 5 is lowered. If on the other hand the clutch 2 establishing the connection is closed by means of the hand lever 10,
The axle 3 being engaged to be driving, the excitation circuit of the electro-valve 9 is interrupted, the spring becomes operative and the return orifice 7 is released; which causes an elevation of the free surface of the oil in the casing 8 since the oil can flow from the accumulation chamber to the housing.

Dans le mode de réalisation de la figure 2, le boitier 5 de la commande d'arbre 4 est pourvu d'une prolongation 11 cylindrique qui peut être libérée ou obturée par un piston 12. La position représentée du piston correspond à un haut niveau d'huile dans le carter 8, qui s'abaissera quand le piston 12 sera déplacé vers la gauche. Bien entendu, l'actionnement du piston 12 par L'embrayage 2 est réalisé d'une manière semblable à celLe de l'électro-vanne 9.  In the embodiment of Figure 2, the housing 5 of the shaft control 4 is provided with a cylindrical extension 11 which can be released or closed by a piston 12. The position shown of the piston corresponds to a high level d oil in the casing 8, which will drop when the piston 12 is moved to the left. Of course, the actuation of the piston 12 by the clutch 2 is carried out in a manner similar to that of the solenoid valve 9.

Claims (3)

REVENDICATIONS 1. Dispositif de graissage par barbotage des engrenages d'une commande d'arbre d'un essieu moteur d'un véhicule automobile pouvant être accouplé occasionnellement à un essieu entraîné en permanence au moyen d'un dispositif d'embrayage, caractérisé en ce qu'il comporte un dispositif de commande (9,12) de l'élévation du niveau d'huile dans le carter (8) activé de manière automatique par le dispositif d'embrayage (2,10) lors de l'embrayage de l'essieu 3. 1. Device for greasing by bubbling the gears of a drive shaft of a driving axle of a motor vehicle which can be occasionally coupled to an axle permanently driven by means of a clutch device, characterized in that 'It includes a control device (9,12) for raising the oil level in the crankcase (8) activated automatically by the clutch device (2,10) when the clutch is engaged. axle 3. 2. Dispositif de graissage selon la revendication 1 caractérisé en ce que, pour une disposition connue en elle-même d'une chambre d'accumulation (6) qui, en particulier, se remplit d'huile de barbotage et qui possède un orifice (7) de retour d'huile au carter, le dispositif de commande comporte une vanne, notamment une électro-vanne (9) pour l'orifice (7) de retour qui ferme l'écoulement de retour lorsque l'essieu (3) est débrayé et qui prend une position d'ouverture lors de l'arrêt du moteur ou de l'interruption de son circuit d'excitation. 2. Lubrication device according to claim 1 characterized in that, for an arrangement known in itself of an accumulation chamber (6) which, in particular, is filled with bubbling oil and which has an orifice ( 7) oil return to the sump, the control device comprises a valve, in particular an electro-valve (9) for the return orifice (7) which closes the return flow when the axle (3) is disengaged and which takes an open position when the engine stops or the excitation circuit is interrupted. 3. Dispositif selon la revendication 1 caractérisé en ce que le dispositif de commande comporte un piston (12) qui libère ou obture une prolongation cylindrique (11) du boîtier (5) de la commande d'arbre (4) au voisinage.  3. Device according to claim 1 characterized in that the control device comprises a piston (12) which releases or closes a cylindrical extension (11) of the housing (5) of the shaft control (4) in the vicinity.
FR8612777A 1985-09-16 1986-09-12 DEVICE FOR LUBRICATING A SHAFT CONTROL OF A MOTOR VEHICLE Expired - Fee Related FR2589968B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0269485A AT393721B (en) 1985-09-16 1985-09-16 LUBRICATION DEVICE FOR THE AXLE GEARBOX OF A MOTOR VEHICLE

Publications (2)

Publication Number Publication Date
FR2589968A1 true FR2589968A1 (en) 1987-05-15
FR2589968B1 FR2589968B1 (en) 1992-12-24

Family

ID=3538804

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8612777A Expired - Fee Related FR2589968B1 (en) 1985-09-16 1986-09-12 DEVICE FOR LUBRICATING A SHAFT CONTROL OF A MOTOR VEHICLE

Country Status (4)

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AT (1) AT393721B (en)
DE (1) DE3630973A1 (en)
FR (1) FR2589968B1 (en)
IT (1) IT1213342B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2270364A1 (en) * 2009-06-30 2011-01-05 Meritor Technology, Inc. An axle

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299561B1 (en) * 1999-07-21 2001-10-09 Meritor Heavy Vehicle Systems, Llc Device for controlling level of gear lubricant as a function of speed
DE10051356B4 (en) 2000-10-17 2004-05-06 Daimlerchrysler Ag Transmission for a reciprocating internal combustion engine
DE10238000B4 (en) * 2002-08-15 2007-05-16 Getrag Getriebe Zahnrad Transmission for a motor vehicle
DE102007005523A1 (en) * 2007-02-03 2008-08-07 Zf Friedrichshafen Ag Transmission for motor vehicle, has variable displacement volume, which changes variable level assigned to housing part, where displacement volume and level are controllable depending on operating parameters of motor vehicle
DE102011117648B4 (en) 2011-11-04 2017-05-24 Audi Ag Device for adjusting the oil level in an engine and / or transmission oil sump of a motor vehicle
WO2014066581A1 (en) 2012-10-26 2014-05-01 Dana Automotive Systems Group, Llc Lubricant management system
DE102014115517A1 (en) 2014-10-24 2016-05-12 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Fluid guiding device and motor vehicle transmission
US10190673B2 (en) 2016-11-30 2019-01-29 Dana Heavy Vehicle Systems, Llc Active oil management system for axles
US11598409B2 (en) * 2020-06-26 2023-03-07 Dana Heavy Vehicle Systems Group, Llc Systems and methods for providing adjustable lubrication to a tandem axle
DE102020126329A1 (en) 2020-10-08 2022-04-14 Bayerische Motoren Werke Aktiengesellschaft Lubricated gear mechanism and method of operation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020198A1 (en) * 1968-10-09 1970-07-10 Daimler Benz Ag
EP0067639A2 (en) * 1981-06-11 1982-12-22 Gkn Axles Limited Axles
GB2116645A (en) * 1982-03-16 1983-09-28 Bhs Bayerische Berg Gear installation
WO1986000678A1 (en) * 1984-07-06 1986-01-30 Zwn Zahnradwerk Neuenstein Gmbh & Co. Immersion lubrication system for gear-boxes of motor vehicles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3208100C2 (en) * 1982-03-06 1984-09-06 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Splash lubrication for a gearbox

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020198A1 (en) * 1968-10-09 1970-07-10 Daimler Benz Ag
EP0067639A2 (en) * 1981-06-11 1982-12-22 Gkn Axles Limited Axles
GB2116645A (en) * 1982-03-16 1983-09-28 Bhs Bayerische Berg Gear installation
WO1986000678A1 (en) * 1984-07-06 1986-01-30 Zwn Zahnradwerk Neuenstein Gmbh & Co. Immersion lubrication system for gear-boxes of motor vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2270364A1 (en) * 2009-06-30 2011-01-05 Meritor Technology, Inc. An axle
CN101936448A (en) * 2009-06-30 2011-01-05 美驰技术有限责任公司 An axle
CN101936448B (en) * 2009-06-30 2015-06-03 美驰技术有限责任公司 An axle

Also Published As

Publication number Publication date
FR2589968B1 (en) 1992-12-24
IT8621680A0 (en) 1986-09-12
DE3630973C2 (en) 1989-03-23
IT1213342B (en) 1989-12-20
AT393721B (en) 1991-12-10
ATA269485A (en) 1991-05-15
DE3630973A1 (en) 1987-03-26

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