EP4599174A1 - Procede de pilotage d'un dispositif de synchronisation d'une boite de vitesses pilotee d'un vehicule automobile - Google Patents
Procede de pilotage d'un dispositif de synchronisation d'une boite de vitesses pilotee d'un vehicule automobileInfo
- Publication number
- EP4599174A1 EP4599174A1 EP23783483.3A EP23783483A EP4599174A1 EP 4599174 A1 EP4599174 A1 EP 4599174A1 EP 23783483 A EP23783483 A EP 23783483A EP 4599174 A1 EP4599174 A1 EP 4599174A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- synchronization
- interval
- depression
- force
- control method
- 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.)
- Pending
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
- B60W10/113—Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input 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
- 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 parallel flow paths, e.g. dual clutch transmissions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid 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
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
- F16H2059/462—Detecting synchronisation, i.e. speed difference is approaching zero
-
- 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
- F16H2061/0422—Synchronisation before shifting by an electric machine, e.g. by accelerating or braking the input shaft
-
- 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
- F16H2061/0474—Smoothing ratio shift by smoothing engagement or release of positive clutches; Methods or means for shock free engagement of dog clutches
-
- 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
- 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
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
-
- 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
Definitions
- the technical context of the present invention is that of controlled gearboxes for motor vehicles. More particularly, the invention relates to a method for controlling a synchronization device of a controlled gearbox of a motor vehicle.
- manually operated gearboxes of motor vehicles comprise a first shaft linked to the engine by a clutch, and a second parallel shaft linked to the drive wheels of the motor vehicle. These shafts can be connected together by pairs of pinions transmitting the movement from one to the other according to different gear ratios, to create transmission ratios.
- One of the pinions of each pair is secured to one of the shafts, the other pinion of the pair is mounted to rotate freely on the other shaft, and can be made secured to its shaft by the axial sliding of a synchronization sleeve.
- a known disadvantage of these architectures lies in the fact that the primary shaft supporting a rotor of the rotating electrical machine has a significant moment of inertia, leading to the need to provide significant work to synchronize the speeds during changes. report.
- the object of the present invention is to propose a new method for controlling a synchronization device of a controlled gearbox in order to respond at least in large part to the preceding problems and also to lead to other advantages .
- Another aim of the invention is to reduce the noise perceived by the user of a motor vehicle equipped with such a controlled gearbox.
- Another aim of the invention is to allow better adaptability of the gearbox, while guaranteeing optimal operation each time.
- At least one of the aforementioned objectives is achieved with a method of controlling a synchronization device comprising a sleeve implementing a first friction cone belonging to a synchronization ring arranged between the sleeve and a pinion to be synchronized, and a second friction cone belonging to the pinion and arranged opposite the first friction cone, to effect a change of speed ratio on a controlled gearbox of a motor vehicle comprising a electric machine linked to the primary shaft of the gearbox, the sleeve being moved axially by an actuator controlled by a computer which successively carries out:
- the computer carries out, prior to the synchronization step, a step of determining a coefficient of increase in synchronization effort used, during the step synchronization, to achieve the synchronization effort - called saturated - between the first and second cones.
- the synchronization force rise coefficient corresponds to the slope along which the axial force is applied to the first and second cones of the synchronization device.
- the synchronization force rise coefficient corresponds to the temporal variation of the axial force applied to the first and second cones during the synchronization step.
- the saturated synchronization force is the synchronization force which makes it possible to establish synchronization between the first and second cones, making possible synchronization of the pinions allowing the passage of the new gear ratio. speed, during the successive interconnection step.
- the step of determining the coefficient of increase in synchronization force comprises a step of preselection of a predetermined value of the coefficient of increase in synchronization force, via one or several values stored in memory or available on an on-board network of the motor vehicle.
- the control method in accordance with the first aspect of the invention makes it possible to control the gearbox by controlling the synchronization step according to the needs of the motor vehicle and its driver.
- the control method according to the invention makes it possible to control a synchronization duration by controlling the functional parameters of the monitoring device.
- synchronization, and more particularly its synchronization force increase coefficient the definition of a high synchronization force increase coefficient will make it possible to reduce the synchronization duration, while the definition of a lower synchronization force increase coefficient will increase the synchronization time.
- controlling the synchronization duration makes it possible to better control the acoustic noise generated by the gearbox during a gear change, thus improving the comfort of use and the quality perceived by the driver.
- control method in accordance with the first aspect of the invention advantageously comprises at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination:
- control method includes a step of applying a synchronization force to the sleeve during the synchronization step
- the coefficient of increase in synchronization force is chosen from (i) first coefficients of increase in synchronization force when the percentage of depression of the accelerator pedal is included in a first depression interval, l synchronization effort being included in a first saturation interval, (ii) second synchronization effort rise coefficients when the percentage of depression of the accelerator pedal is included in a second depression interval, the effort synchronization being included in a second saturation interval, the second synchronization force rise coefficients, the second depression interval and the second saturation interval being respectively greater than the first synchronization force rise coefficients, at the first interval d depression and at the first saturation interval, and possibly (iii) third coefficients of rise in synchronization effort when the percentage of depression of the pedal acceleration is included in a third depression interval, the synchronization force being included in a third saturation interval, the third synchronization force rise coefficients, the third depression interval and the third saturation interval being respectively greater than the second synchronization force rise coefficients, the second depression interval and the second saturation interval;
- the first depression interval is between 0% and 30% of total depression of the accelerator pedal
- the first saturation interval is between 350 N and 450 N;
- the second depression interval is between 31% and 98% of total depression of the accelerator pedal
- the second saturation interval is between 550 N and 650 N;
- the third depression interval is greater than 99% of total depression of the accelerator pedal
- a synchronization duration of the synchronization step is variable depending on the coefficient of increase in synchronization effort determined by the computer during the determination step, the synchronization duration being between 70 ms and 200 ms; vs
- the control method comprises a step of selecting a control profile of the gearbox from several control profiles, each control profile comprising a predefined triplet and comprising a synchronization effort rise coefficient, a depression interval and a saturation interval.
- FIG.2 illustrates a sectional view of the synchronization device in a rest configuration
- FIG.3 illustrates a sectional view of the synchronization device in a synchronization configuration
- FIG.4 illustrates a sectional view of the synchronization device in an engagement configuration
- FIG.5 illustrates a functional graph of the synchronization device.
- such a traction chain comprises:
- the double clutch system 6 configured to allow selection of a speed ratio in order to couple a secondary output shaft 12, linked in rotation to a drive wheel 10 of the motor vehicle, to the primary shaft 11 d 'entrance ;
- an electric motor 3 configured to be able to be coupled in rotation to the primary input shaft 11 in order, where appropriate, to generate a motor torque on said primary input shaft 11;
- a controlled device 2 for coupling the electric motor to the primary input shaft 11 the controlled coupling device 2 being configured to authorize rotational coupling of the electric motor 3 with the primary input shaft 11 , or to authorize decoupling of said electric motor 3 with said primary input shaft 11.
- the double clutch system 6 6 comprises a first gearbox 8, configured to control even speed ratios, and a second gearbox configured to control odd speed ratios.
- the first gearbox 8 makes it possible to couple the secondary output shaft 12 to the primary input shaft 11 through a selection of several even speed ratios
- the second gearbox 9 makes it possible to couple the secondary output shaft 12 to the primary input shaft 11 through a selection of several odd speed ratios.
- the double clutch system 6 makes it possible to establish a rotational coupling of the secondary output shaft 12 with the primary input shaft 11 through one of the speed ratios, even or odd of respectively the first gearbox 8 or the second gearbox 9 and, simultaneously, to establish a rotational coupling of the primary shaft with respectively the second gearbox 9 or the first gearbox 8.
- the second gearbox is coupled to the primary input shaft 11 in order to pre-engage an odd speed ratio directly higher or lower than the even speed ratio by which the rotational coupling between the primary input shaft 11 and the secondary output shaft 12 is established.
- the first gearbox 8 is coupled to the primary input shaft 11 in order to pre-engage an even speed ratio directly higher or lower than the odd speed ratio by which the rotational coupling between the primary input shaft 11 and the secondary shaft 12 output is established.
- the double clutch system 6 comprises:
- Each gearbox 8, 9 of the double clutch system 6 includes a synchronization device 20 which makes it possible to control the engagement of the gear ratios during rotational coupling with the primary shaft.
- the synchronization device 20 comprises a synchronization sleeve 21 making it possible to engage two gears, by the interconnection of two pinions 30 on a transmission shaft 7 of the gearbox. speeds.
- the pinions 30 are placed axially on either side of the sleeve 21.
- An actuator 22 located in the synchronization sleeve 21 makes it possible to immobilize said sleeve 21 in a position producing a neutral point for the gearbox, in which neutral point no rotational coupling is established with the primary shaft 11 of input or the secondary output shaft 12.
- the sleeve 21 is moved by a fork not shown which is controlled by the actuator 22.
- the fork has two arms whose axial ends fit in a circular groove of the sleeve 21 in order to be able to push it axially in the direction of one of the speed ratios and while allowing its free rotation.
- the sleeve 21 comprises, in its bore, internal grooves which fit onto those of a hub 23 linked to the transmission shaft 7 of the gearbox, in order to transmit the torque of the engine between the sleeve 21 and the transmission shaft 7.
- FIGS 3 and 4 detail the operation of the synchronization device 20, in particular through respectively a synchronization step and a interconnection step during a change of speed ratio.
- FIG. 5 illustrates the operation of the synchronization device 20, in which:
- a synchronization step P2 during which a frictional coupling is produced between the synchronization device 20 and the pinion 30 of the gear ratio engaged.
- a gradient of increase in synchronization force is applied to the sleeve 21 in order to achieve such frictional coupling.
- the actuator 22 is controlled according to the axial force.
- the object of the invention is precisely to control the gradient of increase in synchronization force by determining a coefficient of increase in synchronization force which can vary depending on the use cases, the type of driving or the demand of the driver and his pressure on an accelerator pedal of the motor vehicle.
- the invention thus aims to determine the best parameters for controlling synchronization, and in particular for adapting a synchronization duration according to uses.
- a synchronization duration is defined by the following formula:
- T is the synchronization duration, that is to say the duration of the synchronization step P2;
- [79] is the speed difference in radians per second measured at the synchronization device 20;
- [80] is 1 if an upshift is made, and -1 if a downshift is made;
- varJAP is the inertia of the primary shaft, in kg.m 2 ;
- [82] b is the ramp of increase in synchronization force, called coefficient of increase in synchronization force until reaching the maximum synchronization torque CM.
- controlling the synchronization step P2 therefore consists of providing the greatest possible axial force in order to reduce the synchronization duration to prepare the gearbox for the future gear change.
- the invention thus aims to optimize the synchronization step P2 in order to find the best axial force on the sleeve 21 to optimize the synchronization duration with regard to the appearance of shocks during the deflection step P3.
- the invention relates to a method of controlling a synchronization device of a controlled gearbox of a motor vehicle, the control method comprising:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Transmission Device (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2210181A FR3140600B1 (fr) | 2022-10-05 | 2022-10-05 | Procédé de pilotage d'un dispositif de synchronisation d’une boite de vitesses pilotée d’un véhicule automobile |
| PCT/FR2023/051372 WO2024074773A1 (fr) | 2022-10-05 | 2023-09-11 | Procede de pilotage d'un dispositif de synchronisation d'une boite de vitesses pilotee d'un vehicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4599174A1 true EP4599174A1 (fr) | 2025-08-13 |
Family
ID=84370023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23783483.3A Pending EP4599174A1 (fr) | 2022-10-05 | 2023-09-11 | Procede de pilotage d'un dispositif de synchronisation d'une boite de vitesses pilotee d'un vehicule automobile |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4599174A1 (fr) |
| FR (1) | FR3140600B1 (fr) |
| WO (1) | WO2024074773A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH541499A (de) | 1972-12-08 | 1973-09-15 | Klopfer Albert | Vorrichtung zum Abziehen einzelner flächenhafter Gegenstände von einem Stapel |
| GB2386932A (en) | 2002-03-28 | 2003-10-01 | Luk Lamellen & Kupplungsbau | Method of controlling engine torque during a gear shift |
| FR2920703B1 (fr) * | 2007-09-06 | 2009-11-20 | Peugeot Citroen Automobiles Sa | Procede de pilotage d'un dispositif de synchronisation sur une boite de vitesses pilotee d'un vehicule hybride. |
| FR2987331B1 (fr) * | 2012-02-28 | 2015-03-27 | Peugeot Citroen Automobiles Sa | Procede de commande d'un actionneur d'une boite de vitesses et boite de vitesses associee |
| CN109690148B (zh) * | 2016-09-09 | 2020-10-16 | 标致雪铁龙汽车股份有限公司 | 用于同步双离合器变速箱的位置的计算方法 |
-
2022
- 2022-10-05 FR FR2210181A patent/FR3140600B1/fr active Active
-
2023
- 2023-09-11 EP EP23783483.3A patent/EP4599174A1/fr active Pending
- 2023-09-11 WO PCT/FR2023/051372 patent/WO2024074773A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3140600B1 (fr) | 2025-01-31 |
| WO2024074773A1 (fr) | 2024-04-11 |
| FR3140600A1 (fr) | 2024-04-12 |
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