FR2880090A1 - Gearbox for motor vehicle, has hollow primary shaft comprising gear teeth with one tooth interlinked with two pinions that are mounted freely in rotation around secondary shafts that are provided with drive pinions - Google Patents
Gearbox for motor vehicle, has hollow primary shaft comprising gear teeth with one tooth interlinked with two pinions that are mounted freely in rotation around secondary shafts that are provided with drive pinions Download PDFInfo
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- FR2880090A1 FR2880090A1 FR0414001A FR0414001A FR2880090A1 FR 2880090 A1 FR2880090 A1 FR 2880090A1 FR 0414001 A FR0414001 A FR 0414001A FR 0414001 A FR0414001 A FR 0414001A FR 2880090 A1 FR2880090 A1 FR 2880090A1
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- shafts
- primary
- gearbox
- pinions
- pinion
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Classifications
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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
- F16H2003/0931—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
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- 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0052—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising six forward speeds
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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
Boîte de vitesses compacte à deux embrayages.Compact gearbox with two clutches.
L'invention concerne le domaine des boîtes de vitesses utilisées en particulier dans les véhicules automobiles. De telles boîtes comprennent plusieurs arbres parallèles munis d'une pluralité de pignons. The invention relates to the field of gearboxes used in particular in motor vehicles. Such boxes comprise several parallel shafts provided with a plurality of gears.
L'invention concerne plus particulièrement une boîte de vitesses à deux arbres primaires reliés alternativement au moteur par deux embrayages. The invention relates more particularly to a gearbox with two primary shafts connected alternately to the motor by two clutches.
Dans ce domaine, la demande de brevet FR 2 802 600 (THOMAS Joël) a décrit une boîte de vitesses comprenant un arbre primaire plein muni de trois dentures et d'un arbre primaire creux tournant autour de l'arbre primaire plein à côté des trois dentures et muni lui-même de deux autres dentures. In this field, the patent application FR 2 802 600 (THOMAS Joel) has described a gearbox comprising a solid primary shaft provided with three teeth and a hollow primary shaft rotating around the solid primary shaft next to the three teeth and itself provided with two other teeth.
La boîte de vitesses décrite comporte également deux arbres secondaires supportés en leurs extrémités par des paliers, et munis chacun d'un pignon d'attaque engrenant avec une même couronne de différentiel. The described gearbox also comprises two secondary shafts supported at their ends by bearings, and each provided with a pinion meshing with the same differential ring.
Les deux premières dentures de l'arbre primaire plein engrènent avec deux pignons fous montés sur un des arbres secondaires et sont séparées axialement par un synchroniseur double apte à solidariser de manière sélective et exclusive les deux pignons fous avec l'arbre secondaire. Il en est de même pour les deux dentures de l'arbre primaire creux. La troisième denture de l'arbre primaire plein est intercalée entre les deux premières dentures et les deux dentures de l'arbre primaire creux. La longueur totale de la boîte de vitesses décrite dans le document est la somme de l'épaisseur de cinq dentures et de deux synchroniseurs doubles. The first two teeth of the solid primary shaft meshes with two idle gears mounted on one of the secondary shafts and are separated axially by a dual synchronizer adapted to selectively and exclusively join the two idle gears with the secondary shaft. It is the same for the two teeth of the hollow primary shaft. The third toothing of the solid primary shaft is interposed between the first two teeth and the two teeth of the hollow primary shaft. The total length of the gearbox described in the document is the sum of the thickness of five teeth and two double synchronizers.
Cette solution présente plusieurs inconvénients Un premier inconvénient réside dans la longueur de la boîte de vitesses qui limite la possibilité qu'a cette boîte de vitesses d'être implantée entre les structures de fixation d'un bloc-moteur. Un deuxième inconvénient résulte du fait que les pignons du deuxième et du troisième rapports de marche avant sont dans une zone centrale par rapport au palier supportant les arbres. En effet, les pignons de rapports faibles transmettent un couple élevé, et donc engendrent une flèche importante de l'ensemble des arbres primaires. This solution has several disadvantages A first disadvantage lies in the length of the gearbox which limits the possibility that this gearbox to be implanted between the fastening structures of an engine block. A second disadvantage results from the fact that the gears of the second and third forward gears are in a central zone relative to the bearing supporting the shafts. Indeed, the gears of weak reports transmit a high torque, and thus generate a large arrow of the set of primary trees.
L'invention propose une boîte de vitesses qui résout ces inconvénients, et notamment qui réduit la longueur de la boîte de vitesses. L'invention propose également une boîte de vitesses qui réduit la flèche à laquelle est soumis l'arbre primaire plein ou les arbres secondaires. The invention proposes a gearbox which solves these disadvantages, and in particular which reduces the length of the gearbox. The invention also proposes a gearbox which reduces the deflection of the solid primary shaft or the secondary shafts.
Dans un mode de réalisation, une boîte de vitesses de véhicule automobile comprend des arbres parallèles, dont deux arbres primaires coaxiaux reliés alternativement au moteur du véhicule par deux embrayages. La boîte de vitesses comprend également deux arbres secondaires non co- axiaux, dont au moins l'un est muni d'un pignon d'attaque engrenant avec un couronne différentielle. Les arbres primaires sont munis de dentures engrenant chacune avec au moins un pignon monté à rotation sur un arbre secondaire. Un pignon intermédiaire de marche arrière est monté libre sur un arbre secondaire et engrène simultanément avec un pignon de l'autre arbre secondaire et avec une denture solidaire de l'un des arbres primaires Une deuxième denture d'un des arbres primaires engrène simultanément avec deux pignons montés sur deux arbres secondaires. Un des arbres primaires comprend une troisième denture engrenant simultanément avec deux pignons montés sur deux arbres secondaires. In one embodiment, a motor vehicle gearbox comprises parallel shafts, including two coaxial primary shafts alternately connected to the vehicle engine by two clutches. The gearbox also comprises two non-coaxial secondary shafts, at least one of which is provided with a pinion meshing with a differential ring gear. The primary shafts are provided with teeth meshing each with at least one pinion mounted to rotate on a secondary shaft. A reverse intermediate gear is freely mounted on a secondary shaft and meshes with a pinion of the other secondary shaft and with a toothing integral with one of the primary shafts. A second toothing of one of the primary shafts simultaneously meshes with two gears mounted on two secondary trees. One of the primary shafts comprises a third toothing meshing simultaneously with two gears mounted on two secondary shafts.
On conçoit qu'une denture engrenant avec deux pignons contribuant chacun à un rapport de vitesses différent, occupe un espace unique le long de l'axe des arbres primaires alors qu'elle participe à plusieurs rapports de vitesses. La longueur de la boîte de vitesses en est ainsi réduite et la capacité d'implantation améliorée. It is conceivable that a toothing meshing with two gears each contributing to a different gear ratio, occupies a single space along the axis of the primary shafts while it participates in several gear ratios. The length of the gearbox is thus reduced and the implantation capacity improved.
Selon une autre caractéristique, les arbres primaires de la boîte de vitesses sont montés en rotation sur des paliers logés dans un carter de boîte. Au moins les dentures contribuant au rapport de marche arrière, au premier et au deuxième rapports de marche avant, sont au voisinage des paliers de guidage. According to another characteristic, the primary shafts of the gearbox are rotatably mounted on bearings housed in a box housing. At least the teeth contributing to the reverse ratio, the first and second forward gears, are in the vicinity of the guide bearings.
Avantageusement, les deux arbres secondaires sont chacun munis d'un pignon attaquant la même couronne d'un différentiel. Advantageously, the two secondary shafts are each provided with a pinion driving the same ring of a differential.
Selon une autre caractéristique, les dentures des arbres primaires de la boîte de vitesses contribuant au rapport de marche avant de même parité, sont sur le même arbre primaire. According to another characteristic, the teeth of the primary shafts of the gearbox contributing to the forward ratio of the same parity, are on the same primary shaft.
Avantageusement, la distance entre l'axe des arbres primaires et les axes des deux arbres secondaires sont sensiblement identiques. Advantageously, the distance between the axis of the primary shafts and the axes of the two secondary shafts are substantially identical.
On conçoit que cet avantage permet d'utiliser des synchroniseurs ou des pignons identiques sur les arbres secondaires. La différence des rapports de vitesses issus des pignons des deux arbres secondaires peut être réalisée par exemple par des pignons d'attaque de diamètres différents. It is conceivable that this advantage makes it possible to use synchronizers or identical gears on the secondary shafts. The difference in gear ratios from the gears of the two secondary shafts can be achieved for example by different diameter of the drive gears.
Selon encore une autre caractéristique, la boîte de vitesses comprend un carter séparant une partie de la boîte contenant les pignons lubrifiés par de l'huile et une partie contenant les embrayages. Ledit carter étant traversé par les deux arbres primaires, un premier joint assure l'étanchéité à l'huile entre les deux arbres primaires, et un deuxième joint assure l'étanchéité à l'huile entre l'un des arbres primaires et le carter. Les deux embrayages peuvent être à huile ou peuvent être des embrayages secs. According to yet another characteristic, the gearbox includes a housing separating a portion of the box containing the lubricated gears with oil and a portion containing the clutches. Said housing being traversed by the two primary shafts, a first seal ensures the oil seal between the two primary shafts, and a second seal ensures the oil seal between one of the primary shafts and the housing. Both clutches can be oil or can be dry clutches.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée d'un mode de réalisation pris à titre d'exemple non limitatif et illustré par le dessin annexé, sur lequel: -la figure unique est une représentation de la cinématique d'un mode de réalisation de la boîte de vitesses de l'invention. Other features and advantages of the invention will appear on reading the detailed description of an embodiment taken by way of non-limiting example and illustrated by the appended drawing, in which: the single figure is a representation of the kinematics of an embodiment of the gearbox of the invention.
Comme illustré sur la figure, la boîte de vitesses comprend un arbre primaire plein 1 et un arbre primaire creux 2, reliés alternativement à un arbre moteur 3 par deux embrayages à huile, respectivement 4 et 5. La boîte de vitesses comprend également deux arbres secondaires 6 et 7, munis chacun d'un pignon d'attaque 8 et 9 engrenant avec la même couronne de différentiel 10. As illustrated in the figure, the gearbox comprises a solid primary shaft 1 and a hollow primary shaft 2, alternately connected to a drive shaft 3 by two oil clutches, respectively 4 and 5. The gearbox also comprises two secondary shafts. 6 and 7, each provided with a pinion 8 and 9 meshing with the same ring gear 10.
De gauche à droite sur la figure, l'arbre primaire 1 est muni de deux dentures fixes 11 et 12, et l'arbre primaire creux 2 est muni de deux dentures 13 et 14. La denture 11 engrène avec un pignon de première 15 monté libre en rotation autour de l'arbre secondaire 6, lequel pignon de première 15 engrène avec un pignon de marche arrière 20 monté libre en rotation autour de l'arbre secondaire 7. La denture 12 engrène avec un pignon de cinquième 17 monté libre en rotation autour de l'arbre secondaire 6, ainsi qu'avec un pignon de troisième 22 monté libre en rotation autour de l'arbre secondaire 7. De même, la denture 13 engrène avec un pignon de sixième 18 monté libre en rotation autour de l'arbre secondaire 6, ainsi qu'avec un pignon de quatrième 23 monté libre en rotation autour de l'arbre secondaire 7. La denture 14 engrène avec un pignon de seconde 25 monté libre en rotation autour de l'arbre secondaire 7. From left to right in the figure, the primary shaft 1 is provided with two fixed toothing 11 and 12, and the hollow primary shaft 2 is provided with two teeth 13 and 14. The toothing 11 meshes with a first gear 15 free in rotation around the secondary shaft 6, which first pinion 15 meshes with a reverse gear 20 mounted to rotate freely around the secondary shaft 7. The toothing 12 meshes with a fifth pinion 17 rotatably mounted around the secondary shaft 6, as well as with a third pinion gear 22 rotatably mounted around the secondary shaft 7. Similarly, the toothing 13 meshes with a sixth gear 18 mounted to rotate freely around the secondary shaft 6, as well as with a fourth pinion 23 rotatably mounted around the secondary shaft 7. The toothing 14 meshes with a second gear 25 mounted to rotate freely around the secondary shaft 7.
Un synchroniseur 16, monté fixe sur l'arbre secondaire 6, et situé entre le pignon de première 15 et le pignon de cinquième 17, est apte à solidariser de manière sélective et exclusive lesdits pignons sur l'axe 6. A synchronizer 16, fixedly mounted on the secondary shaft 6, and located between the first gear 15 and the fifth gear 17, is able to selectively and exclusively fasten said gears on the axis 6.
Un synchroniseur simple 19, monté fixe sur l'arbre secondaire 6, et situé entre les positions axiales des dentures 13 et 14, est apte à solidariser de manière sélective le pignon de sixième 18 avec l'arbre secondaire 6. De même, deux synchroniseurs 21 et 24 sont montés fixes sur l'arbre secondaire 7 et situés, l'un entre les pignons de marche arrière 20 et le pignon de troisième 22, l'autre entre le pignon de quatrième 23 et le pignon de seconde 25. Chacun de ces deux synchroniseurs est apte à solidariser de manière sélective et exclusive les deux pignons adjacents avec l'arbre secondaire 7. A simple synchronizer 19, fixedly mounted on the secondary shaft 6, and located between the axial positions of the toothing 13 and 14, is adapted to selectively join the sixth gear 18 with the secondary shaft 6. Similarly, two synchronizers 21 and 24 are fixedly mounted on the secondary shaft 7 and located, one between the reverse gears 20 and the third pinion 22, the other between the fourth gear 23 and the second pinion 25. Each of these two synchronizers are able to selectively and exclusively join the two adjacent gears with the secondary shaft 7.
L'ensemble des deux arbres primaires 1 et 2 sont supportés en rotation par un palier 26 situé en extrémité de l'arbre primaire plein 1 et par un palier 27 autour de l'arbre primaire creux 2 situé entre la denture 14 et les embrayages 4 et 5. L'arbre secondaire 6 est supporté en rotation par deux paliers à chacune de ses extrémités, un palier 28 situé à gauche du pignon de première 15 et un palier 29 situé à droite du pignon d'attaque 8. De même, l'arbre secondaire 7 est supporté en rotation par deux paliers 30 et 31 situés, l'un à gauche du pignon de marche arrière 20, l'autre à droite du pignon d'attaque 9. The set of two primary shafts 1 and 2 are rotatably supported by a bearing 26 located at the end of the solid primary shaft 1 and by a bearing 27 around the hollow primary shaft 2 located between the toothing 14 and the clutches 4 and 5. The secondary shaft 6 is rotatably supported by two bearings at each of its ends, a bearing 28 located to the left of the first gear 15 and a bearing 29 located to the right of the pinion gear 8. Likewise, secondary shaft 7 is supported in rotation by two bearings 30 and 31 located, one to the left of the reverse gear 20, the other to the right of the pinion 9.
Les pignons de marche arrière 20, de première 15 et de seconde 25, sont tous situés au voisinage des paliers de guidage. Les pignons correspondant à des vitesses de rotation faibles, transmettent la puissance du moteur grâce à un couple de forte intensité. Le fait que ces pignons soient au voisinage des paliers de guidage permet de réduire la flèche des arbres sur lesquels ils sont montés. Le milieu de boîte est occupé par les pignons de troisième, quatrième, cinquième et sixième engendrant une flèche sur les arbres primaire et secondaire moindre que les pignons de rapport inférieur. The reverse gears 20, first 15 and second 25, are all located in the vicinity of the guide bearings. The sprockets corresponding to low speeds of rotation, transmit the power of the engine thanks to a couple of strong intensity. The fact that these gears are in the vicinity of the guide bearings reduces the boom of the trees on which they are mounted. The box center is occupied by the third, fourth, fifth and sixth gears generating an arrow on the primary and secondary shafts less than the lower gears.
Le pignon de marche arrière 20, le pignon de première 15 et la denture 11 occupent la même position axiale. Il en est de même pour les pignons engrenant avec la denture 12, et ceux engrenant avec la denture 13. L'épaisseur des synchroniseurs doubles 16, 21 et 24 est similaire, celle du synchroniseur simple 19 est inférieure. La longueur totale de la boîte est donc la somme des épaisseurs de quatre dentures et de deux synchroniseurs doubles. Une telle boîte de vitesses est particulièrement courte. The reverse gear 20, the first gear 15 and the toothing 11 occupy the same axial position. It is the same for the gears meshing with the toothing 12, and those meshing with the toothing 13. The thickness of the dual synchronizers 16, 21 and 24 is similar, that of the simple synchronizer 19 is lower. The total length of the box is the sum of the thicknesses of four teeth and two synchronizers double. Such a gearbox is particularly short.
Dans une variante, la distance axiale entre les arbres primaires 2 et l'arbre secondaire 6 est similaire à la distance séparant les arbres primaires 1, 2 de l'arbre secondaire 7. Ainsi, les diamètres des pignons de cinquième 17 et de troisième 22 sont sensiblement identiques. Le pignon d'attaque 8 est d'un diamètre supérieur au pignon d'attaque 9, de sorte que le rapport de cinquième est supérieur au rapport de troisième. La proportion entre les rapports de réduction de cinquième et de troisième est identique à la proportion entre les rapports de réduction de sixième et de quatrième. Alternatively, the axial distance between the primary shafts 2 and the secondary shaft 6 is similar to the distance between the primary shafts 1, 2 of the secondary shaft 7. Thus, the diameters of the fifth gear 17 and third gear 22 are substantially identical. The pinion gear 8 is of a larger diameter than the pinion gear 9, so that the fifth gear is greater than the third gear. The proportion between the fifth and third reduction ratios is identical to the proportion between the sixth and fourth reduction ratios.
Dans une autre variante, l'entraxe séparant l'arbre secondaire 6 des arbres primaires et l'entraxe séparant l'arbre secondaire 7 des arbres primaires sont différents, de sorte que les pignons 22 et 17 sont également différents ainsi que les pignons 23 et 18. La différence d'entraxe, cumulée avec la différence des diamètres des pignons d'attaque 8 et 9, permet de choisir chacun des rapports de réduction. In another variant, the distance between the secondary shaft 6 of the primary shafts and the spacing between the secondary shaft 7 of the primary shafts are different, so that the pinions 22 and 17 are also different as well as the pinions 23 and 18. The difference in center distance, accumulated with the difference of the diameters of the drive gears 8 and 9, makes it possible to choose each of the reduction ratios.
Dans une autre variante, la boîte de vitesses comprend un carter, non représenté, séparant une partie de la boîte contenant l'ensemble des pignons lubrifiés par de l'huile et une autre partie contenant les embrayages 4, 5 et l'arbre-moteur 3. L'étanchéité entre ces deux parties de boîte est assurée par un premier joint 32 situé entre l'arbre primaire plein 1 et l'arbre primaire creux 2 et par un deuxième joint d'étanchéité 33 situé entre l'arbre primaire creux 2 et un carter, non représenté. Ces deux joints assurent l'étanchéité entre l'huile de lubrification des pignons et les embrayages, de sorte que la même boîte puisse être au choix équipée, soit d'embrayages à huile, soit d'embrayages secs. In another variant, the gearbox comprises a housing, not shown, separating a part of the box containing all the lubricated gears with oil and another part containing the clutches 4, 5 and the drive shaft. 3. The seal between these two box parts is provided by a first seal 32 located between the solid primary shaft 1 and the hollow primary shaft 2 and by a second seal 33 located between the hollow primary shaft 2 and a housing, not shown. These two seals provide a seal between the gear lube oil and the clutches, so that the same box can be optionally equipped with either oil clutches or dry clutches.
Ce mode de réalisation est particulièrement compact, puisqu'il n'utilise que deux arbres secondaires et une longueur égale à seulement quatre pignons et deux synchroniseurs. Cette compacité est néanmoins compatible avec une boîte présentant six rapports de marche avant et un rapport de marche arrière. This embodiment is particularly compact since it uses only two secondary shafts and a length equal to only four gears and two synchronizers. This compactness is nevertheless compatible with a box having six forward gears and a reverse gear.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0414001A FR2880090B1 (en) | 2004-12-29 | 2004-12-29 | COMPACT GEARBOX WITH TWO CLUTCHES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0414001A FR2880090B1 (en) | 2004-12-29 | 2004-12-29 | COMPACT GEARBOX WITH TWO CLUTCHES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2880090A1 true FR2880090A1 (en) | 2006-06-30 |
| FR2880090B1 FR2880090B1 (en) | 2008-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0414001A Expired - Fee Related FR2880090B1 (en) | 2004-12-29 | 2004-12-29 | COMPACT GEARBOX WITH TWO CLUTCHES |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2880090B1 (en) |
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| DE19853824A1 (en) * | 1998-11-21 | 2000-05-31 | Getrag Getriebe Zahnrad | Automated motor vehicle drive train has parallel force transfer paths; second force transfer path transfers torque to drive shaft during force transfer interruption in first transfer path |
| FR2802600A1 (en) | 1999-12-16 | 2001-06-22 | Renault | Gearbox has two concentric primary shafts with pinions mounted on them, a drive pinion mounted on a secondary shaft cooperates with a primary shaft pinion and has less teeth then the other drive pinion mounted on another secondary shaft |
| EP1245863A2 (en) * | 2001-03-27 | 2002-10-02 | C.R.F. Società Consortile per Azioni | A motor-vehicle gearbox |
| EP1367293A2 (en) * | 1998-12-24 | 2003-12-03 | DaimlerChrysler AG | Toothed speed-changing gearing with two parallel transmission paths |
| DE10347273A1 (en) * | 2002-10-01 | 2004-04-15 | Fachhochschule Brandenburg | Parallel train transmission for vehicle has each loose wheel with switchable free wheel |
| FR2847013A1 (en) * | 2002-11-08 | 2004-05-14 | Renault Sa | Compact automobile gearbox comprises concentric solid and hollow primary shafts with fixed teeth, two secondary shafts with drive pinions for same differential crown wheel, primary shaft teeth meshing with secondary shaft idler pinions |
| FR2848924A1 (en) * | 2002-12-23 | 2004-06-25 | Renault Sa | Internal control device for controlling automated or robotized gear box, has two independent control systems, where one control allows activation of one clutch and communication of connections depending on another clutch |
| FR2852651A1 (en) * | 2003-03-17 | 2004-09-24 | Renault Sa | Gear box for motor vehicle, has primary solid shaft and concentric primary hollow shaft holding fixed pinions, and secondary shafts holding idle pinions, where fixed pinions are engaged with respective idle pinions |
-
2004
- 2004-12-29 FR FR0414001A patent/FR2880090B1/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461188A (en) * | 1981-12-23 | 1984-07-24 | Ford Motor Company | Dual clutch multiple countershaft transmission |
| US5788037A (en) * | 1996-07-16 | 1998-08-04 | New Venture Gear, Inc. | Integrated clutch transmission |
| DE19853824A1 (en) * | 1998-11-21 | 2000-05-31 | Getrag Getriebe Zahnrad | Automated motor vehicle drive train has parallel force transfer paths; second force transfer path transfers torque to drive shaft during force transfer interruption in first transfer path |
| EP1367293A2 (en) * | 1998-12-24 | 2003-12-03 | DaimlerChrysler AG | Toothed speed-changing gearing with two parallel transmission paths |
| FR2802600A1 (en) | 1999-12-16 | 2001-06-22 | Renault | Gearbox has two concentric primary shafts with pinions mounted on them, a drive pinion mounted on a secondary shaft cooperates with a primary shaft pinion and has less teeth then the other drive pinion mounted on another secondary shaft |
| EP1245863A2 (en) * | 2001-03-27 | 2002-10-02 | C.R.F. Società Consortile per Azioni | A motor-vehicle gearbox |
| DE10347273A1 (en) * | 2002-10-01 | 2004-04-15 | Fachhochschule Brandenburg | Parallel train transmission for vehicle has each loose wheel with switchable free wheel |
| FR2847013A1 (en) * | 2002-11-08 | 2004-05-14 | Renault Sa | Compact automobile gearbox comprises concentric solid and hollow primary shafts with fixed teeth, two secondary shafts with drive pinions for same differential crown wheel, primary shaft teeth meshing with secondary shaft idler pinions |
| FR2848924A1 (en) * | 2002-12-23 | 2004-06-25 | Renault Sa | Internal control device for controlling automated or robotized gear box, has two independent control systems, where one control allows activation of one clutch and communication of connections depending on another clutch |
| FR2852651A1 (en) * | 2003-03-17 | 2004-09-24 | Renault Sa | Gear box for motor vehicle, has primary solid shaft and concentric primary hollow shaft holding fixed pinions, and secondary shafts holding idle pinions, where fixed pinions are engaged with respective idle pinions |
Non-Patent Citations (1)
| Title |
|---|
| JOST K: "A DIFFERENT AUTOMATIC", AUTOMOTIVE ENGINEERING, SOCIETY OF AUTOMOTIVE ENGINEERS. WARRENDALE, US, vol. 111, no. 7, July 2003 (2003-07-01), pages 32 - 34,36, XP001174593, ISSN: 0098-2571 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2880090B1 (en) | 2008-06-27 |
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