EP1214532A1 - Transmission automatique comportant cinq rapports de marche avant - Google Patents
Transmission automatique comportant cinq rapports de marche avantInfo
- Publication number
- EP1214532A1 EP1214532A1 EP00964310A EP00964310A EP1214532A1 EP 1214532 A1 EP1214532 A1 EP 1214532A1 EP 00964310 A EP00964310 A EP 00964310A EP 00964310 A EP00964310 A EP 00964310A EP 1214532 A1 EP1214532 A1 EP 1214532A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmission
- controlled
- shaft
- upstream
- downstream
- 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.)
- Withdrawn
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims description 74
- 239000012530 fluid Substances 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
- F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
-
- 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
- F16H2200/0008—Transmissions for multiple ratios specially adapted for front-wheel-driven vehicles
-
- 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
- F16H2200/0047—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising five forward speeds
-
- 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
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
Definitions
- the invention relates to an automatic transmission for a motor vehicle
- the invention relates more particularly to an automatic transmission for a motor vehicle, of the type which comprises from upstream to downstream, a hydraulic torque converter, at least two coaxial upstream and downstream epicyclic trains, and at least one bridge which is intended to drive the wheels of the vehicle, of the type in which at least one element of the planetary trains is connected in rotation to the bridge, at least one element of the planetary trains is rotated to another element of the planetary trains, at least one element of the planetary gear trains is capable of being selectively linked in rotation to a shaft of a turbine of the converter, and at least one element is capable of being selectively linked to a casing of the transmission, in order to establish different ratios of transmission
- a crown of the upstream epicycloidal tram is linked in rotation to a planet carrier of the downstream epicyclic tram which is linked in rotation to the bridge
- a crown of the downstream epicyclic train is linked in rotation to the planet carrier of the upstream epicyclic tram
- a planetary of the upstream epicyclic tram is capable of being rotated at the turbine shaft by means of a first controlled clutch or else is capable of being hoisted to the casing of the transmission via a first controlled brake
- a planet carrier of the upstream epicyclic tram is capable of being rotated to the turbine shaft of the converter via a second controlled clutch or is capable of to be linked to the transmission housing via a second controlled brake
- a planetary of the downstream epicyclic tram is likely to be connected to the transmission casing by means of a third controlled brake
- Such transmission allows in particular, by selectively actuating the first and second clutches and the first, second, and third brakes, to establish at most four different transmission ratios in forward gear and a transmission ratio in reverse gear
- This arrangement has the disadvantage of limiting the range of reports offered by the transmission to four reports.
- the invention proposes an automatic transmission comprising a fifth u th direct transmission transmission ratio.
- the invention provides an automatic transmission of the type described above, characterized in that the bridge is capable of being selectively rotated directly to the turbine shaft of the converter in order to obtain an additional transmission ratio
- a planetary of the upstream epicyclic idal tram is capable of being rotated to the turbine shaft by means of a first controlled clutch or is capable of being hoisted at the transmission casing by means of a first controlled brake
- a planet carrier of the upstream epicyclo ida tram is capable of being rotated to the turbine shaft of the converter by means of a second controlled clutch or is likely to be linked to the transmission casing via a second controlled brake
- a planetarium of the downstream epicycloidal tram is likely to be hoisted to the transmission case via a third controlled brake
- a crown of the upstream epicycloidal train is linked in rotation to a planet carrier of the downstream epicycloidal tram which is rotated at the bridge, and a crown of the downstream epicycloidal tram is linked in rotation to the planet carrier of the upstream epicycloidal tram,
- the automatic transmission comprises a bridge lowering shaft, one of which is an upstream gear meshing with a pinion secured to the planet carrier of the downstream epicycioidal tram and one of which is a downstream gear meshing with a drive pinion for the bridge,
- the bridge lowering shaft comprises an additional pinion which permanently meshes with a idler pinion which is capable of being selectively clutched to the turbine shaft of the converter by means of an additional controlled clutch,
- the turbine shaft of the converter has an additional pinion which permanently meshes with a fixed pinion of an intermediate descent shaft which is capable of being selectively coupled to the bridge descent shaft via a additional clutch controlled,
- the clutches and brakes are hydraulically operated, and the additional clutch is supplied with hydraulic fluid by a specific distributor, - the turbine shaft coaxially crosses the two epicyclic trains,
- the first and second controlled clutches are arranged opposite the converter turbine with respect to the two planetary gear trains and comprise at least one common element
- the additional controlled clutch is arranged opposite the converter turbine with respect to the two planetary gear trains
- the first and third controlled brakes are arranged on either side of the two planetary gear trains and of the second controlled brake, the first controlled brake being arranged near the planetary of the upstream epicyclic id tram and the third controlled brake being arranged near of the planetary of the downstream epicyclic tram
- FIG. 1 is a schematic view of a first embodiment of a transmission according to the invention
- - Figure 2 is a schematic view of a second embodiment of a transmission according to the invention
- - Figure 3 is a table representative of the active / mactive state of the clutches and brakes of the transmission in function different transmission relationships that it allows to establish
- the transmission 1 0 comprises from upstream to downstream, a hydraulic torque converter q which is capable of supplying the transmission 1 0 with a driving power coming from an engine (not shown) of the vehicle and which comprises at at least one turbine wheel 12, at least two coaxial upstream 14 and downstream epicyclic trains 14 and at least one bridge 1 8 which is intended to drive the vehicle wheels 20
- the hydraulic torque converter, the two upstream planetary gear trains 14 and upstream 16, and the axle 1 8 are rotatably mounted in a casing 19 of the transmission 1 0
- the turbine wheel 12 is linked in rotation to one end of a turbine shaft 22 which coaxially crosses the two epicyclic upstream 14 and downstream 16 trains, and the other end of which is linked in rotation to an element 24 common to two clutches 26 and 28 controls which are capable of selectively linking elements of the two epicyclic upstream 14 and downstream 16 trains to allow their coupling with the turbine shaft 22
- the clutches 26 and 28 controlled are hydraulically controlled disc clutches which are controlled by hydraulic clutch distributors (not shown) controlled in opening by a central control unit (not shown) of the transmission but this arrangement is not limiting of the invention and it could be electromagnetic powder clutches or electromechanical clutches which would then be controlled by relays controlled by said central control unit
- the transmission 10 includes three brakes 30, 32, and 34 controlled which make it possible to selectively join elements of the two epicyclic upstream 14 and downstream 16 trains 16 with the casing 19 of the transmission 10
- the controlled brake 30 is a hydraulically controlled disc brake and the brakes 32 and 34 controlled are hydraulically controlled band brakes which are controlled by hydraulic brake distributors (not shown ) controlled in opening by the central transmission control unit, but this arrangement is not limitative of the invention, and it could be electromagnetic powder brakes, or electromechanical brakes which would then be controlled by relays controlled by said central control unit
- at least one element of the planetary trains 14 and 16 is rotated to the bridge 18, at least one element of the planetary trains 14 and 16 is rotated to another element of the planetary trains 14 and 16 at least an element of the planetary gear trains 14 and 16 is capable of being selectively rotated at the shaft 22 of a turbine of the converter, and at least one element of the planetary gear trains 14 and 16 is capable of being selectively connected to the casing 19 transmission 10, to establish different transmission ratios
- a sun gear 36 of the upstream epicyclic tram 14 is capable of being rotated to the shaft 22 of the turbine by the intermediate of the first clutch 26 controlled or is capable of being connected to the casing 19 of the transmission 10 by means of the first brake 30 controlled
- a planet carrier 38 of the upstream planetary gear 14 is capable of being linked in rotation to the converter turbine shaft 22 via the second controlled clutch 28, or is capable of being linked to the casing 19 of the transmission 10 via the second controlled brake 32
- a planetary gear 42 of the epicyclic tram downstream 16 is likely to be linked to the casing 19 of the transmission via the third brake 34 controlled
- the first controlled clutch 26 and the second controlled clutch 28 are arranged opposite the turbine 12 of the converter with respect to the two planetary gears 14 and 16.
- the first controlled brake 30 and the third controlled brake 34 are arranged on either side of the two planetary trains 14 and 16 and of the second control brake 32 which is arranged substantially around the two planetary trains 14 and 16, the first control brake being arranged close to the sun gear 36 of the upstream epicycloidal tram 14 and the third controlled brake 36 being arranged close to the sun gear 42 of the downstream epicycloidal tram
- This arrangement advantageously makes it possible to have a particularly axially compact transmission 10
- the motive power which selectively travels through the elements of the upstream 14 and downstream epicyclic trams is transmitted to the bridge 18, and therefore to the wheels 20, via a pinion 48 which is carried by the planet carrier 44 of the downstream epicyclic idal tram 16 and which meshes with a shaft 50 of the descent of the meshing bridge
- the shaft 50 for lowering the bridge which is rotatably mounted in the casing 19 of the transmission, has at one end an upstream pinion 52 which meshes with the pinion 48 secured to the planet carrier 44 of the epicyclic tram .
- downstream dal 16 and comprises at its opposite end a downstream pinion 54 which meshes with a pinion 56 for driving the bridge 18
- the transmission 10 makes it possible to establish a reverse gear transmission ratio "AR" by activating only the first clutch 26 and the second brake 32 a first forward gear transmission ratio “R1” by activating only the first clutch 26 and the third brake 34, a second ratio “R2” of forward transmission by activating only the second clutch 28 and the third brake 34, a third ratio “R3” of forward transmission by activating only the first clutch 26 and the second clutch 28, and a fourth "R4" gear ratio front by activating only the second clutch 26 and the first brake 30
- the bridge 18 is capable of being selectively rotated in a direct manner to the turbine shaft 22 of the converter in order to obtain an additional transmission ratio corresponding to a fifth "direct drive" transmission ratio of the transmission.
- the transmission 10 comprises means intended to directly drive the shaft 50 for lowering the bridge using the element 24 of the shaft 22 of the turbine which is common to the two clutches 26 and 28
- the element 24 of the converter turbine shaft 22 comprises an additional pinion 58 which permanently meshes with a fixed pinion 60 of an intermediate shaft 62 of descent which is capable of being selectively coupled to the shaft 50 for lowering the axle by means of an additional clutch 64 controlled
- the shaft 50 for lowering the bridge comprises an additional pinion 58 which permanently meshes with a idler pinion 60 which is capable of being selectively clutched on the turbine shaft 22 of the converter by means of an additional clutch 64 controlled
- the additional clutch 64 controlled is in particular carried by the element 24 of the shaft 22 of the turbine and is therefore arranged opposite the turbine 12 of the converter with respect to the two planetary gear trains 14, 16
- the additional clutch 64 controlled is a hydraulically controlled disc clutch which is controlled by a specific hydraulic distributor In this way, the hydraulic supply of the transmission 10 remains unchanged compared to the prior art corresponding to a transmission with four forward gears.
- the transmission 10 makes it possible to establish the fifth forward transmission ratio "R5" by activating only the additional clutch 64 Either of the second clutch 28 or the first brake 30 may possibly remain activated
- the driving power travels directly from the turbine shaft 22 to the bridge 50 without traveling by the planetary gears 14 and 16
- the transmission 10 according to the invention therefore makes it possible to benefit from an automatic transmission comprising a fifth ratio "R5" of direct intake which is particularly advantageous, in terms of fuel consumption, at high speed, as is the case during a motorway route
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9911725 | 1999-09-20 | ||
| FR9911725A FR2798713B1 (fr) | 1999-09-20 | 1999-09-20 | Transmission automatique comportant cinq rapports de marche avant |
| PCT/FR2000/002581 WO2001021980A1 (fr) | 1999-09-20 | 2000-09-15 | Transmission automatique comportant cinq rapports de marche avant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1214532A1 true EP1214532A1 (fr) | 2002-06-19 |
Family
ID=9550035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00964310A Withdrawn EP1214532A1 (fr) | 1999-09-20 | 2000-09-15 | Transmission automatique comportant cinq rapports de marche avant |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1214532A1 (fr) |
| FR (1) | FR2798713B1 (fr) |
| WO (1) | WO2001021980A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0905067A2 (pt) * | 2009-08-14 | 2011-04-19 | Monteiro De Lima Alan Miranda | transmissão automática contìnua otimizada reversìvel |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548681A (en) * | 1969-06-23 | 1970-12-22 | Allis Chalmers Mfg Co | Multiple speed power shift transmission |
| JPS5455264A (en) * | 1977-10-11 | 1979-05-02 | Aisin Warner | Automatic transmission |
| JPS58654A (ja) * | 1981-06-23 | 1983-01-05 | Honda Motor Co Ltd | 車両用変速機 |
| JPS6023657A (ja) * | 1983-07-20 | 1985-02-06 | Nissan Motor Co Ltd | 自動変速機の歯車列 |
| JPS6249049A (ja) * | 1985-08-28 | 1987-03-03 | Mazda Motor Corp | 車両用自動変速機 |
| EP0305045B1 (fr) * | 1987-07-22 | 1991-12-27 | Toyota Jidosha Kabushiki Kaisha | Transmission à changement de vitesses de type planétaire procurant 6 vitesses par deux simples mécanismes engrenage planétaire simple et pignon unique |
| US5267916A (en) * | 1992-12-04 | 1993-12-07 | Ford Motor Company | Multiple speed automatic transmission for automotive vehicles |
| JP3794102B2 (ja) * | 1997-04-23 | 2006-07-05 | アイシン・エィ・ダブリュ株式会社 | 自動変速機構 |
-
1999
- 1999-09-20 FR FR9911725A patent/FR2798713B1/fr not_active Expired - Fee Related
-
2000
- 2000-09-15 WO PCT/FR2000/002581 patent/WO2001021980A1/fr not_active Ceased
- 2000-09-15 EP EP00964310A patent/EP1214532A1/fr not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0121980A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2798713A1 (fr) | 2001-03-23 |
| WO2001021980A1 (fr) | 2001-03-29 |
| FR2798713B1 (fr) | 2001-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20020315 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: RENAULT S.A.S. |
|
| 17Q | First examination report despatched |
Effective date: 20020917 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20030111 |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH CY DE DK ES GB IT LI |