EP3080488A1 - Procédé et dispositif de contrôle de la présélection d'un rapport d'une boîte de vitesses à double embrayage, pour limiter le bruit induit - Google Patents
Procédé et dispositif de contrôle de la présélection d'un rapport d'une boîte de vitesses à double embrayage, pour limiter le bruit induitInfo
- Publication number
- EP3080488A1 EP3080488A1 EP14806036.1A EP14806036A EP3080488A1 EP 3080488 A1 EP3080488 A1 EP 3080488A1 EP 14806036 A EP14806036 A EP 14806036A EP 3080488 A1 EP3080488 A1 EP 3080488A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- synchronizer
- clutch
- idler gear
- vehicle
- threshold
- 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- Withdrawn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 20
- 230000008878 coupling Effects 0.000 claims abstract description 24
- 238000010168 coupling process Methods 0.000 claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 claims abstract description 24
- 238000013519 translation Methods 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 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
- 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
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
-
- 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
- F16H61/68—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 specially adapted for stepped gearings
- F16H61/684—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 specially adapted for stepped gearings without interruption of drive
- F16H61/688—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 specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/09—Reducing noise
-
- 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
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H2061/2823—Controlling actuator force way characteristic, i.e. controlling force or movement depending on the actuator position, e.g. for adapting force to synchronisation and engagement of gear clutch
-
- 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
- F16H2306/00—Shifting
- F16H2306/18—Preparing coupling or engaging of future gear
-
- 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
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
Definitions
- the invention relates to vehicles comprising a heat engine coupled to a dual clutch gearbox (or DCT), and more precisely the control of the preselection of a gear in such a gearbox.
- DCT dual clutch gearbox
- gearboxes of the aforementioned type advantageously make it possible to simultaneously engage their two primary shafts on different ratios, in order to allow gear shifts under torque, that is to say without interrupting the acceleration of the vehicle.
- a very fast gear change without breaking torque is done in two steps.
- the computer controlling the gearbox anticipates the engagement of the next gear by preselecting an odd or even gear. This is called the "screening pass”.
- the computer controls the engagement of the next report by causing the closing of the clutch which is associated with the preselected ratio and opening the other clutch associated with the report being engaged.
- the preselection of the next report can be triggered almost any time by the computer controlling the gearbox, so it may happen that it occurs at a time when the behavior of the driver (especially on the brake pedal or accelerator) shows that he does not want to significantly modify the current dynamics of the vehicle. In this situation, the driver can then be annoyed by the noise that is induced by the preselection and in particular by coupling the synchronizer to the idler gear to preselect and then by coupling the dog to the same idler.
- the driver may be concerned that the transmission may be malfunctioning, and thus may be tempted to return his vehicle to his dealer for examination, which makes him waste time and possibly money.
- the invention therefore aims to improve the situation.
- This process comprises:
- the method according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- the first step may comprise a first substep in which a minimum predefined first force is exerted on the player in order to translate the synchronizer until it comes into contact with the idle gear by inducing a noise below the first threshold; predefined, and a second substep in which is exerted on the player a second minimum effort preset to translate the synchronizer and cause a synchronization coupling thereof to the idler gear which induces a noise below the first predefined threshold;
- the third threshold may be equal to about one second
- the first step can be triggered when it does not detect a willingness of the driver of the vehicle to substantially modify a dynamic vehicle while a report must be preselected.
- the invention also proposes a device for controlling the preselection, in a vehicle, of a ratio of a double-clutch gearbox comprising at least one player, secured in rotation to a secondary shaft while being able to translate on the latter, and comprising at least one dog, adapted to be translated to be coupled to a idler gear mounted free rotation on the secondary shaft, and at least one synchronizer 5 adapted to be translated to be coupled to the idler.
- This device is arranged to trigger the exercise on the player of at least a predetermined minimum effort to translate the synchronizer and cause a synchronization coupling of the latter to the idler gear that induces a noise below a first predefined threshold, then to trigger) the exercise on the player of a force greater than a second predetermined threshold and suitable to constrain the dog to angularly shift the synchronizer, then to trigger the translation of the clutch to a minimum speed predefined so as to cause a coupling of this last to the crazy gear that induces a noise below the first threshold.
- the invention also proposes a calculator comprising a control device of the type of that presented above.
- the invention also proposes a vehicle, possibly of automobile type, and comprising, on the one hand, a heat engine coupled to a double-clutch gearbox and comprising at least one sliding device, secured in rotation to a secondary shaft while can be translated on the latter, and having at least one dog, adapted to be translated to be coupled to a idler gear mounted free rotation on the secondary shaft, and at least a synchronizer adapted to be translated to be coupled to the pinion crazy, and, on the other hand, a calculator of the type of that presented above.
- the object of the invention is in particular to propose a method, and an associated device, for controlling the preselection, in a vehicle, of a ratio of a double-clutch gearbox.
- the double clutch gearbox is considered to be part of an automobile-type vehicle, such as a car.
- the invention is not limited to this type of vehicle. It concerns indeed any vehicle that can be driven by a driver and comprising a heat engine coupled to a double clutch gearbox. Consequently, the invention relates in particular to land vehicles (cars, motorcycles, commercial vehicles, coaches (or buses), trucks, road vehicles, construction machinery, handling equipment, and trains), and maritime vehicles (or river).
- the dual-clutch transmission is part of a transmission chain that also includes a heat engine, a drive shaft, two drive shafts, and a supervisor (or calculator) to supervise (or manage) its operation.
- the drive shafts are responsible for rotating the front wheels of the vehicle. But in a variant they could be charged to rotate the rear wheels of the vehicle.
- the engine comprises a crankshaft defining the drive shaft.
- the gearbox includes two concentric primary shafts and
- the primary shafts are designed to receive the engine torque (thermal) via the two corresponding clutches. Moreover, these primary shafts comprise driving gears which are engaged simultaneously with idler gears corresponding secondary trees with
- the secondary shafts are coupled to the drive shaft, usually via a differential.
- Each secondary shaft comprises at least one player (and generally several) operated by a control fork. Each player is more specifically secured in rotation to a
- each player comprises at least one synchronizer and at least one clutch coupled to this synchronizer by a mechanism allowing decoupling.
- Each synchronizer is adapted to be translated in the longitudinal direction to be coupled to a idler gear mounted free rotation on its secondary shaft during a so-called synchronization phase.
- Each dog is adapted to be translated in the longitudinal direction, after angularly shifting the associated synchronizer during a phase generally called
- same idle gear is intended to temporarily temporarily rotate the latter to the secondary shaft that carries it.
- each player can comprise at least: a hub secured in rotation to its secondary shaft thanks to splines
- a sleeve mounted in translation on the hub and defining the clutch
- a synchronizing ring (or synchronizer) comprising a female conical portion adapted to be coupled to a male conical portion of a
- An arming mechanism installed between an inner face of the sleeve and an outer face of the hub, and for translating the synchronizing ring (or synchronizer) to couple to the idle gear when the sleeve / claw is translated.
- the object of the invention is in particular to propose a method for enabling the preselection of a gear ratio of the double-clutch transmission described above.
- Such a control method comprises first and second steps that can be implemented by a control device.
- the latter can,
- this control device can be realized in the form of software modules
- a first step, the method according to the invention, consists at least in exercising on the player (concerned by the preselection decided by the supervisor or calculator) at least a predetermined minimum effort to
- the first threshold is chosen so that the noise induced by the synchronization operation is virtually inaudible in the passenger compartment of the vehicle, including
- this first threshold may be chosen so as to correspond to an acoustic power level equal to about 72 dBA. It will be understood that this exercise of minimal effort is triggered by the control device when the supervisor or calculator has decided on a pre-selection.
- the first step can be optionally subdivided into two sub-steps.
- a first sub-step (so-called synchronization approach) intended to translate the synchronizer longitudinally until it comes into contact with the idle gear, and a second substep (called synchronization) intended to gradually synchronize the speed of rotation of the idler gear on the speed of rotation of the synchronizer.
- first and second minimum forces may be different.
- the second minimal effort may be slightly greater than the first minimal effort.
- the first minimal effort is intended to translate the
- Each pre-defined minimum effort can be determined by tests (or tests) carried out in a test laboratory or in the factory for the gearbox considered.
- the first minimum force corresponds to a force that is slightly greater than the resistant force that the sleeve must overcome to translate the cocking mechanism so that it slightly translates the synchronizing ring on the idler gear (without causing their coupling).
- the second minimum effort corresponds to a force that is slightly greater than the resistant force that the sleeve must overcome to translate the synchronizing ring on the idler gear to cause their coupling for synchronization.
- each minimum effort can be converted into a speed of movement of the synchronizer which is used to define a control setpoint of the range which moves the player comprising this synchronizer.
- this third threshold may be equal to about one second. But other third threshold values can be used according to the synchronizer technology.
- the first step is carried out when a determination of the driver of the vehicle to substantially modify the dynamics of the vehicle while a report is to be preselected is detected.
- the control device can decide to carry out the
- first step (then the second step). Note that the detection of the will of the driver can be done during the first step. In this case the first step is initiated as soon as the supervisor (or calculator) has decided to pre-select a report.
- a second step, of the method according to the invention consists at least in
- This effort above the second threshold can be determined by means of tests (or tests) carried out in a test laboratory or in the factory for the gearbox considered.
- the force greater than the second threshold corresponds to a force that is slightly greater than the resistant force that must be overcome to allow the unwinding. It will be noted that this effort can be converted into a speed of movement of the synchronizer which is used to define a control setpoint of the range which moves the player comprising this synchronizer.
- the predefined minimum speed is preferably greater than one
- FIG. 1 is a diagrammatic illustration of a nonlimiting example of an algorithm implementing a control method according to the invention.
- one determines a
- control device performs a test to determine if there is a time constraint of passage of a new report.
- the control device can analyze the parameters that define the current dynamics of the vehicle, and therefore the
- driver behavior such as depressing or releasing the brake pedal and depressing or releasing the accelerator pedal.
- control device D does not detect a desire of the driver of the vehicle to substantially modify the dynamic of the vehicle then
- a report must be preselected (which corresponds to an absence of time constraint of passage of a new report), then it performs a step 30 corresponding to the first and second steps of the method according to the invention.
- the preselection is then performed in a so-called reduced noise mode.
- control device D detects a will of the
- driver of the vehicle to substantially change the dynamics of the vehicle while a report must be preselected (which corresponds to a time constraint of passage of a new report, for example due to a sudden depression of the pedal of brake or accelerator), then it performs a step 40 in which it triggers the realization of a
- 5 classic preset is meant here a preselection in which the forces exerted on the synchronizer and on the dog and the speed of displacement of the clutch (once the unwinding has been performed) are all higher than those used in the reduced-noise mode, and so are predefined regardless of the noise they induce.
- the invention offers several advantages, among which:
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1362410A FR3014522B1 (fr) | 2013-12-11 | 2013-12-11 | Procede et dispositif de controle de la preselection d'un rapport d'une boite de vitesses a double embrayage, pour limiter le bruit induit |
PCT/FR2014/052854 WO2015086932A1 (fr) | 2013-12-11 | 2014-11-07 | Procédé et dispositif de contrôle de la présélection d'un rapport d'une boîte de vitesses à double embrayage, pour limiter le bruit induit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3080488A1 true EP3080488A1 (fr) | 2016-10-19 |
Family
ID=50102065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14806036.1A Withdrawn EP3080488A1 (fr) | 2013-12-11 | 2014-11-07 | Procédé et dispositif de contrôle de la présélection d'un rapport d'une boîte de vitesses à double embrayage, pour limiter le bruit induit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3080488A1 (fr) |
CN (1) | CN105980746B (fr) |
FR (1) | FR3014522B1 (fr) |
WO (1) | WO2015086932A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3042015B1 (fr) * | 2015-10-05 | 2017-11-24 | Peugeot Citroen Automobiles Sa | Procede de pilotage d’au moins un synchroniseur d’une boite de vitesses d’un vehicule |
JP2019183896A (ja) * | 2018-04-04 | 2019-10-24 | トヨタ自動車株式会社 | 車両用動力伝達装置の制御装置 |
CN113252344B (zh) * | 2021-04-21 | 2022-06-17 | 东风鼎新动力***科技有限公司 | 一种双离合器变速箱齿轮敲击噪声优化方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001073321A1 (fr) * | 2000-03-24 | 2001-10-04 | Siemens Aktiengesellschaft | Commande de boite de vitesses automatique |
JP2005226687A (ja) * | 2004-02-10 | 2005-08-25 | Aisin Ai Co Ltd | 車両用自動変速装置 |
JP5151160B2 (ja) * | 2007-01-26 | 2013-02-27 | トヨタ自動車株式会社 | 車両用駆動装置の制御装置 |
US8162118B2 (en) * | 2009-05-15 | 2012-04-24 | Ford Global Technologies, Llc | Lash control in a transmission coupler |
FR2947880B1 (fr) * | 2009-07-09 | 2011-07-29 | Peugeot Citroen Automobiles Sa | Procede et dispositif pour piloter une boite de vitesses |
JP5266158B2 (ja) * | 2009-08-03 | 2013-08-21 | 本田技研工業株式会社 | 変速機の制御装置 |
US8560192B2 (en) * | 2010-04-15 | 2013-10-15 | GM Global Technology Operations LLC | Control system and method for shift fork position in dual clutch transmissions |
CN102221085B (zh) * | 2010-04-15 | 2014-10-01 | 通用汽车环球科技运作公司 | 用于双离合变速器中的换档叉位置的控制***和方法 |
DE112010005964B4 (de) * | 2010-10-27 | 2015-07-09 | Toyota Jidosha Kabushiki Kaisha | Steuervorrichtung einer Fahrzeug-Kraftübertragungsvorrichtung |
FR2971316B1 (fr) * | 2011-02-07 | 2013-03-15 | Peugeot Citroen Automobiles Sa | Dispositif et procede pour la commande d'une boite de vitesses a double embrayage |
-
2013
- 2013-12-11 FR FR1362410A patent/FR3014522B1/fr not_active Expired - Fee Related
-
2014
- 2014-11-07 CN CN201480067126.9A patent/CN105980746B/zh not_active Expired - Fee Related
- 2014-11-07 WO PCT/FR2014/052854 patent/WO2015086932A1/fr active Application Filing
- 2014-11-07 EP EP14806036.1A patent/EP3080488A1/fr not_active Withdrawn
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2015086932A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105980746A (zh) | 2016-09-28 |
CN105980746B (zh) | 2017-12-19 |
WO2015086932A1 (fr) | 2015-06-18 |
FR3014522A1 (fr) | 2015-06-12 |
FR3014522B1 (fr) | 2016-01-22 |
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