EP2165092A2 - Procede de pilotage d'une boite de vitesses automatique - Google Patents
Procede de pilotage d'une boite de vitesses automatiqueInfo
- Publication number
- EP2165092A2 EP2165092A2 EP08806124A EP08806124A EP2165092A2 EP 2165092 A2 EP2165092 A2 EP 2165092A2 EP 08806124 A EP08806124 A EP 08806124A EP 08806124 A EP08806124 A EP 08806124A EP 2165092 A2 EP2165092 A2 EP 2165092A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sun gear
- satellite
- output member
- gear
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 3
- 241000220300 Eupsilia transversa Species 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 6
- 230000000881 depressing effect Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid 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
- F16H3/663—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another with conveying rotary motion between axially spaced orbital gears, e.g. a stepped orbital gear or Ravigneaux
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
- F16H2061/205—Hill hold control, e.g. with torque converter or a friction device slightly engaged to keep vehicle stationary
-
- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
- F16H2061/207—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control by neutral control
-
- 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
-
- 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
-
- 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
- F16H2200/202—Transmissions using gears with orbital motion characterised by the type of Ravigneaux set
- F16H2200/2023—Transmissions using gears with orbital motion characterised by the type of Ravigneaux set using a Ravigneaux set with 4 connections
-
- 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
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2043—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with five engaging means
-
- 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
- F16H2200/2097—Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
Definitions
- the invention relates to a method for controlling an automatic gearbox such as a gearbox Le Pelletier with two epicyclic gear trains.
- Such a gearbox which is represented in FIG. 1 comprises a primary shaft 1 or input shaft, coupled to a motor shaft 2 via a hydraulic clutch or visco-coupler 3, the assembly being mounted along AX axis.
- the first epicyclic gear 4 comprises a fixed internal sun gear 5, an external sun gear 6 rigidly integral with the input shaft 1, and a single satellite door 7 carrying a sun gear 8.
- the satellite 8 is engaged in the internal sun gear 5 and in the outer planetary 6.
- the second epicyclic gear 9 comprises a double satellite carrier 11 carrying two planet gears.
- the first pinion said small satellite 12 and the second pinion said large satellite 13 are intermeshed in one another being able to rotate relative to the satellite door.
- the small planet pinion 12 is the one that is closest to the axis AX, and the large planet pinion 13 is surrounded by an external sun gear 14 being engaged in this external sun gear 14.
- This external sun gear 14 constitutes the output member of this gearbox, it corresponds to its output shaft or secondary shaft.
- This second epicyclic gear 9 also comprises a small internal sun gear 16 which is geared in the small sun gear 12, and a large internal sun gear 17 geared in the large pinion gear 13.
- the first epicyclic gear 4 and the second epicyclic gear 9 can be linked in rotation to each other or through the small sun gear internal 16 or through the large internal sun gear 17.
- a first actuator in the form of a clutch 18 makes it possible to secure the simple satellite carrier 7 of the first epicyclic gear train 4 to the small internal sun gear 16 of the second epicyclic gear train 9.
- a second actuator in the form of a a clutch 19 is provided for securing the single satellite carrier 7 of the first gear 4 to the large internal sun gear 17 of the second gear.
- This gearbox comprises four other actuators, namely a third clutch 21 and a fourth clutch 22 and two brakes identified by 23 and 24. It also comprises a freewheel 25 connecting the frame (hatched) to the double satellite door 11.
- the third clutch 21 makes it possible to rotate the primary shaft in rotation with the double satellite door 11
- the fourth clutch 22 makes it possible to lock the visco-coupler by rotating the motor shaft 2 in rotation with the input shaft 1.
- the first brake 23 which is carried by the chassis makes it possible to block in rotation the large internal sun gear 17 and the second brake 24 which is also carried by the frame makes it possible to block in rotation the double satellite gate 11.
- actuators are controlled via a hydraulic circuit maintained powered by a hydraulic pump which is generally driven by the engine of the vehicle.
- the driving shaft 2, the primary shaft 1, the single satellite carrier 7, the double satellite carrier 11, the external planetaries 6 and 14 as well as the small and the large internal sun gear 16 and 17 are able to turn around the axis AX.
- the pinion 8 is able to rotate relative to the simple satellite gate 7, by turning about the axis AX8 which is parallel to the axis AX while being spaced from it.
- the small and large satellites 12 and 13 are pivotable relative to the double satellite gate 11 by pivoting respectively about axes AX12 and AX13, these axes being also parallel to the axis AX while being spaced from that -this.
- the various actuators namely the four clutches 18, 19, 21 and 22 and the two brakes 23 and 24 are driven from an electronic unit (not shown) to successively engage the reports of the gearbox.
- the visco-coupler 3 is a clutch that can remain long sliding, unlike a disc clutch. It also allows to absorb the jumps of torque while the various actuators are controlled to cause a gearshift.
- the fourth clutch 22 which makes it possible to rotate the motor shaft and the primary shaft in rotation is closed to cancel any slippage within the visco-coupler. This closure is usually controlled when the vehicle is traveling at a higher speed, for example, at 30 or 40 km / h while the operating conditions show that a change of gear will not be triggered immediately.
- This gearbox includes six gears and a reverse gear. The selection of a report is made on the basis of the table below which gives for each report the state of each of the actuators.
- the large pinion gear 13 is rotated by the small satellite 12, and it drives in rotation the outer sun gear 14 which is the output member of the gearbox.
- the freewheel 25 allows to allow a rotation of the double satellite door 11 when the vehicle decelerates, which limits the jolts.
- the driver can also control an so-called first-imposed mode, in which the actuators are in the same states as in the first automatic, with the difference that the second brake 24 is then closed to completely block the double satellite gate 11.
- the vehicle is then subjected to greater vibration than if it is immobilized in neutral. These vibrations are due to the acyclisms of the engine, which are transmitted in the form of torque throughout the transmission of the vehicle, to its driving wheels, due to the drag torque of the visco-coupler.
- This drag torque also causes overconsumption of fuel since it results in an unnecessary energy expenditure when the vehicle is at a standstill.
- US patent application US4784020 teaches opening a clutch interposed between the input shaft and the output shaft when the vehicle has been stationary for a sufficient time. During the restart, that is to say when the user releases the brake and / or accelerates, it is then necessary to quickly close one of the clutches to advance the vehicle, while the input shaft turns at the speed of the engine and that the output shaft is almost immobile.
- the object of the invention is to overcome this disadvantage by proposing other solutions for uncoupling the input shaft and the output member, with which the restart can be controlled without risk of degradation of components of the gearbox while preventing the vehicle from backing up.
- the subject of the invention is a method for controlling an automatic gearbox comprising various transmission elements mounted in a frame, these elements including an input shaft connected by a visco-coupler to a driving shaft of the vehicle, a rotary output member, at least one epicyclic gear including a satellite carrier and planet gears as well as an inner sun gear and an outer sun gear, a plurality of brake and / or clutch actuators operable to be in an open state , closed or sliding, each brake being able to block in rotation an element relative to the frame and each clutch being able to join two rotating elements, in which when the vehicle is stationary, the actuators are piloted to uncouple the input shaft from the output member and to lock the output member in rotation.
- the restart can be controlled by starting, if necessary, by first closing the actuator or actuators making it possible to link the primary shaft to the output member in rotation, and then opening the actuator (s) which brakes or block the output member during engine torque up.
- the actuator linking the primary shaft to the secondary shaft is closed when the primary shaft is driven only by the low drag torque, which does not risk to damage it.
- the invention also relates to a control method of a gearbox including a first epicyclic gear including an external sun gear rigidly secured to the input shaft and a fixed internal sun wheel and a single satellite door carrying a pinion a satellite geared in the external sun gear and in the inner sun gear, a second epicyclic gear including an external sun gear constituting the rotary output member and a small internal sun gear and a large internal sun gear and a double satellite carrier carrying a first and a second satellite gear meshing into one another, the first satellite being also geared in the small inner sun gear, the second satellite being also geared in the large inner sun gear as well as in the outer sun gear forming output member, this gearbox including also a first and a second clutch for securing in rotation the simple satellite door re spectively to the small inner sun gear and the large inner sun gear, a third clutch for securing in rotation the double satellite gate to the input shaft, and a first brake for locking in rotation the large internal sun gear and a second brake to lock in rotation the double satellite gate, in
- the invention also relates to a method for controlling an automatic gearbox as defined above, in which the actuators are driven with a hydraulic circuit powered by an oil pump which is electric.
- FIG. 1 already described is a schematic representation showing the architecture of a known automatic gearbox type '' Le Pelletier '';
- FIG. 2 already described shows the state of the various actuators of the gearbox of FIG. 1 when the first gear is engaged while the gearbox is in automatic mode;
- FIG. 3 already described shows the state of the various actuators of the gearbox of FIG. 1 when the first gear is engaged while being imposed by the driver;
- - Figure 4 shows the state of the actuators of the gearbox of Figure 1 according to the method according to the invention when the engine is running
- - Figure 5 shows the state of the actuators of the gearbox of Figure 1 according to the method according to the invention when the engine is stopped;
- the idea underlying the invention is to control the actuators of the gearbox so as to uncouple the primary shaft and the output member, leaving the primary shaft free to rotate, while blocking the output shaft in rotation.
- This uncoupling is triggered for example when the vehicle is stationary for a predetermined period such as a few seconds.
- This disengagement is disabled for example when the driver releases the brake pedal, or when depressing the accelerator pedal.
- the bodies represented in solid black line are blocked.
- the organs represented in black line with white dots are free to rotate.
- the organs represented in black and white line are rotary.
- the bodies shown in black lines and discontinuous white lines are in regulated rotation.
- a cross is affixed to each actuator, clutch or brake, when closed.
- the uncoupling is obtained by controlling the two brakes 23 and 24 so that they are closed and by controlling the opening of the others.
- actuators i.e. the first, second, third and fourth clutches 18, 19, 21 and 22.
- the large satellite 13 is locked in rotation since it is carried by the double satellite gate 11 which is blocked by the second brake 24, while being engaged in the large internal sun gear 17 which is also locked in rotation by the first brake 23.
- the outer sun gear 14 is thus blocked since it is engaged in the large satellite 13 which is blocked.
- the small internal planetary 16 is also blocked, since it is geared in the small satellite 12 which is blocked because it is meshed in the large satellite
- the primary shaft 1 is completely free to rotate, so that it rotates at the same speed as the motor, because it is connected thereto by the visco-coupler which drives it in rotation due to his trail couple.
- the output member 14 is completely uncoupled from the drive shaft 2, while being locked in rotation, which allows to brake the vehicle directly from the gearbox.
- the restart consists in first completely closing the first clutch 18, then opening the first and the second brake 23 and 24 so as to unlock the output member 14 so that it drives the drive wheels of the vehicle to do so moving forward.
- the input shaft is then connected in rotation with the output member 14 which is blocked by the brakes 23 and
- the brakes 23 and 24 are then gradually opened during the engine torque up, to cause the assisted restart, without risk of recoil of the vehicle.
- control method according to the invention is also applicable to a vehicle of the type '' Stop and
- the heat engine is automatically off when the vehicle comes to a stop and then it is automatically restarted to cause the vehicle to advance on depressing the accelerator pedal.
- the brakes 23 and 24 are thus closed so as to block the output member 14 in rotation, and the other actuators are open to uncouple the primary shaft 1 from the output member 14.
- the primary shaft 1 as well as the satellite gate 7 are then immobile instead of rotating, because the motor being off, the driving shaft 2 does not drive the primary shaft l.
- the restart is obtained analogously to the case of FIG. 5.
- the first clutch 18 is first closed.
- the brakes 23 and 24 are then gradually opened during the engine torque up, to cause the restart, without risk of recoil of the vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Structure Of Transmissions (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0756563A FR2919036B1 (fr) | 2007-07-18 | 2007-07-18 | Procede de pilotage d'une boite de vitesses automatique |
| PCT/FR2008/051197 WO2009019352A2 (fr) | 2007-07-18 | 2008-06-30 | Procede de pilotage d'une boite de vitesses automatique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2165092A2 true EP2165092A2 (fr) | 2010-03-24 |
Family
ID=39016297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08806124A Withdrawn EP2165092A2 (fr) | 2007-07-18 | 2008-06-30 | Procede de pilotage d'une boite de vitesses automatique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2165092A2 (fr) |
| FR (1) | FR2919036B1 (fr) |
| WO (1) | WO2009019352A2 (fr) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6155455A (ja) * | 1984-08-24 | 1986-03-19 | Toyota Motor Corp | 車輌用自動変速機のアイドル運転時制御方法 |
| US4644826A (en) * | 1984-08-24 | 1987-02-24 | Toyota Jidosha Kabushiki Kaisha | Idling control system for an automatic transmission providing smooth starting off action |
| US4730708A (en) * | 1985-05-30 | 1988-03-15 | Toyota Jidosha Kabushiki Kaisha | Idling control method and system for internal combustion engine providing anti creep action |
| JPS6283537A (ja) | 1985-10-07 | 1987-04-17 | Toyota Motor Corp | 車輛用自動変速機のアイドル運転時制御方法 |
| DE10239392A1 (de) * | 2002-08-28 | 2004-03-11 | Zf Friedrichshafen Ag | Verfahren zum Steuern eines Automatgetriebes für ein Kraftfahrzeug mit einem Anfahrelement |
| DE10327444A1 (de) * | 2003-06-18 | 2005-01-05 | Daimlerchrysler Ag | Verfahren zum Betrieb eines Antriebsstrangs eines Kraftfahrzeugs |
| DE10347713B4 (de) * | 2003-10-14 | 2011-02-17 | Zf Friedrichshafen Ag | Verfahren zur Steuerung eines Schaltelementes in einem Automatgetriebe oder automatisierten Schaltgetriebe eines Kraftfahrzeuges |
| KR100610792B1 (ko) * | 2004-08-11 | 2006-08-09 | 현대자동차주식회사 | 자동변속기의 6속 파워 트레인 |
| DE102004059262A1 (de) * | 2004-12-09 | 2006-06-14 | Daimlerchrysler Ag | Verfahren zum Betrieb eines Antriebsstrangs eines Kraftfahrzeugs |
-
2007
- 2007-07-18 FR FR0756563A patent/FR2919036B1/fr not_active Expired - Fee Related
-
2008
- 2008-06-30 EP EP08806124A patent/EP2165092A2/fr not_active Withdrawn
- 2008-06-30 WO PCT/FR2008/051197 patent/WO2009019352A2/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009019352A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009019352A2 (fr) | 2009-02-12 |
| FR2919036A1 (fr) | 2009-01-23 |
| FR2919036B1 (fr) | 2009-11-20 |
| WO2009019352A3 (fr) | 2009-04-02 |
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| 18D | Application deemed to be withdrawn |
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