WO2013189867A1 - Verfahren zur vermeidung oder reduzierung von rupfschwingungen - Google Patents
Verfahren zur vermeidung oder reduzierung von rupfschwingungen Download PDFInfo
- Publication number
- WO2013189867A1 WO2013189867A1 PCT/EP2013/062471 EP2013062471W WO2013189867A1 WO 2013189867 A1 WO2013189867 A1 WO 2013189867A1 EP 2013062471 W EP2013062471 W EP 2013062471W WO 2013189867 A1 WO2013189867 A1 WO 2013189867A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear
- transmission
- natural frequency
- starting
- stage
- Prior art date
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
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
-
- 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
-
- 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
- F16H2057/0012—Vibration-damping or noise reducing means specially adapted for gearings for reducing drive line oscillations
Definitions
- the invention relates to a method for avoiding or reducing juddering vibrations, in particular in the drive train of a motor vehicle. Also, the invention relates to a related device for carrying out a corresponding method.
- chatter vibrations are known during the starting process, which occur more intensively due to, among other things, speed oscillations in the resonance state.
- the drive train has a certain natural frequency, which is inevitably passed through during the starting process, so that an excitation with the natural frequency can take place. This leads to a corresponding resonance peak, which is judged to be disadvantageous.
- An exemplary embodiment of the invention provides a method for avoiding or reducing juddering vibrations, in particular in a drive train of a motor vehicle with an automated transmission, in which two transmission stages can be inserted simultaneously, wherein, especially when starting in a first transmission stage, another transmission stage is selectively engaged, is synchronized and / or designed to selectively select the natural frequency of the drive train to reduce or avoid Jupschwingitch operating point.
- a change in the state of the second gear ratio from engaged to not engaged can cause a change in the natural frequency of, for example, about 6 Hz to about 8 Hz, causing a change in the corresponding speed from about 360 revolutions per minute (rpm) to about 480 rpm.
- the natural frequency is lower in one gear setting with inserted another gear ratio than when not engaged another gear ratio. This allows the change of the invention during the starting process, so that can be approached with engaged second gear until the corresponding speed of the natural frequency of the non-inserted state is passed and then the translation stage is designed and thereby increases the natural frequency, the relevant natural frequency is already exceeded ,
- both transmission stages can be inserted simultaneously, for example, in a transmission designed as a double-clutch transmission.
- this simultaneous insertion does not mean that a drive torque is also passed over both translation stages.
- first gear stage for starting is the first gear, wherein the corresponding second gear stage is the second gear or a higher gear.
- first gear stage for starting is the first gear
- second gear stage is the second gear or a higher gear.
- first gear stage for starting up is the second gear, wherein the corresponding second gear stage is the first gear or the third gear or a higher gear. This is an advantageous selection, for example, for a starting operation in winter operation.
- An embodiment of the invention relates to an apparatus for carrying out a method for avoiding or reducing juddering vibrations in a drive train of a motor vehicle with an automated transmission, wherein the transmission has two groups of transmission stages, wherein from each group a translation stage is inserted simultaneously, the transmission is automatically actuated. It is expedient if the transmission is a dual-clutch transmission with two groups of gear ratios, each group of gear ratios is associated with a clutch.
- Figure 1 is a schematic representation of a diagram for explaining a first
- Figure 2 is a schematic representation of a diagram for explaining the first
- Figure 3 is a schematic representation of a diagram for explaining a second
- Figure 4 is a schematic representation of a diagram for explaining the second
- FIG. 1 shows a diagram for illustrating a method for avoiding or reducing juddering vibrations in a drive train of a motor vehicle with an automated transmission.
- the sensitivity is represented as the amplitude of a torque excitation of the first transmission input shaft of the transmission divided by the torque excitation as a function of the frequency f.
- the resonance curve 1 at 6.5 Hz corresponds to the natural frequency of the drive train when starting in first gear, wherein the second gear is still engaged in the transmission.
- the curve with the resonance frequency at 8 Hz corresponds to the natural frequency of the drive train at a start in the first gear, wherein still no further gear is engaged, but the neutral position is otherwise engaged.
- the frequencies of 6.5 Hz and 8 Hz respectively correspond to a speed of 390 rpm or 480 rpm between the transmission input shaft and the engine speed.
- the engagement process begins approximately at point 3 of the diagram on the x-axis because the slip is substantially equal to the engine speed and slip is reduced as the clutch is engaged further. This means that the curve 4 is traversed from point 3 to point 5 on the x-axis, when a starting operation with increasingly engaged clutch is performed.
- the curve 4 runs from point 3 beyond the 8 Hz limit on the curve 1, which corresponds to the curve for a natural frequency of 6.5 Hz with second gear engaged, wherein the starting process actually takes place in first gear ,
- the dual-clutch transmission thus allows a start in a first gear, wherein still another other gear is engaged.
- the other gear is the second gear.
- the second gear is designed in the transmission, so that with further closing of the clutch and further reduction the slip speed curve 4 runs below point 6 to point 5 along the curve 2.
- a switching of the other gear ratio, an engaged second gear or no engaged second gear is selected in a starting operation in first gear to selectively select the natural frequency of the drive train and to avoid the formation of a resonance peak at least as far as possible.
- FIG. 2 shows in a further diagram the procedure for avoiding or reducing juddering vibrations.
- the rotational speeds are plotted as a function of time t, wherein in the left-hand sub-diagram the representation according to FIG. 1 is plotted, which, however, is laid on its side.
- the engagement begins, the engine speed Neng is 1400 revolutions per minute, and the transmission input speed Nlpsl of the first transmission input shaft is zero.
- the slip as the difference Neng-Nlps 1 decreases substantially linearly.
- the starting process is carried out with engaged second gear at a start in first gear. From the time t- ⁇ then the second gear is designed so that until the time t 2 no other other gear is engaged in the transmission.
- the transmission input shaft speed Nlps2 decreases from t- ⁇ to zero, the transmission input shaft speed Nlpsl continues to increase linearly and, as can be seen, takes place a change from curve 1 of Figure 1 to curve 2 of Figure 1 in the left part of Figure 2 instead.
- FIG. 3 shows a further exemplary embodiment of the procedure according to the invention, the representation of FIG. 3 substantially corresponding to the representation of FIG.
- the amplitude of the torque excitation of the transmission input shaft 1 is shown as a function of the frequency f.
- the curve 10 starts at value 1 1 and runs from larger frequencies to smaller frequencies up to the point 12.
- the curve 10 follows at the beginning of the curve 13, which corresponds to the curve for the resonant frequency or natural frequency at 8 Hz, wherein starting from point 14, a disturbance is generated by engaging the second gear and synchronizing this second gear, so that a change takes place from the setting of the other gear ratio from the state "no gear ratio" to the curve 15 at which the second gear is engaged the curve 10 no longer follows the curve 13 from point 14, but changes to the falling branch curve 15.
- a disturbance of the formation of the resonance frequency takes place, so that a suppression the resonance frequency results.
- FIG. 4 shows the course of the rotational speeds N as a function of the time t in this exemplary embodiment.
- Now starts at t 0, the engagement of the first clutch of the dual clutch transmission for starting in first gear.
- the other translation level is not so that the input input shaft speed Nlps2 remains at 0 while the transmission shaft speed Nlpsl increases linearly. From the time t- ⁇ finds a disturbance of the drive train instead by the second gear is engaged or synchronized to achieve a detuning of the system.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Structure Of Transmissions (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013003113.2T DE112013003113A5 (de) | 2012-06-22 | 2013-06-17 | Verfahren zur Vermeidung oder Reduzierung von Rupfschwingungen |
US14/400,450 US10161497B2 (en) | 2012-06-22 | 2013-06-17 | Method for avoiding or reducing chatter vibrations |
CN201380029534.0A CN104350307B (zh) | 2012-06-22 | 2013-06-17 | 用于避免或降低颤振的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012210580 | 2012-06-22 | ||
DE102012210580.8 | 2012-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013189867A1 true WO2013189867A1 (de) | 2013-12-27 |
Family
ID=48652066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/062471 WO2013189867A1 (de) | 2012-06-22 | 2013-06-17 | Verfahren zur vermeidung oder reduzierung von rupfschwingungen |
Country Status (4)
Country | Link |
---|---|
US (1) | US10161497B2 (de) |
CN (1) | CN104350307B (de) |
DE (2) | DE102013211238A1 (de) |
WO (1) | WO2013189867A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018005565A1 (de) * | 2018-07-13 | 2020-01-16 | Daimler Ag | Verfahren zum Einlegen eines nächsten Vorauswahlgangs in einem Doppelkupplungsgetriebe |
CN111322388B (zh) * | 2018-12-14 | 2023-03-24 | 比亚迪股份有限公司 | 一种汽车控制方法及控制装置 |
JP2021081031A (ja) * | 2019-11-21 | 2021-05-27 | 本田技研工業株式会社 | 車両の動力伝達装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2067681B1 (de) | 2007-12-04 | 2010-12-01 | Peugeot Citroën Automobiles Société Anonyme | Steuerungsverfahren und -vorrichtung einer Kupplung einer gesteuerten, mechanischen Getriebeeingangswelle zur Vermeidung der Vibrationen in der Schleichphase des Motors |
WO2012019586A1 (de) * | 2010-08-12 | 2012-02-16 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zum betreiben eines automatisierten doppelkupplungsgetriebes |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006008207B4 (de) | 2005-03-16 | 2018-10-04 | Schaeffler Technologies AG & Co. KG | Verfahren zum Vermindern von unerwünschten Geräuschen in einem Parallelschaltgetriebe |
DE102006010934C5 (de) | 2005-03-26 | 2024-03-21 | Schaeffler Technologies AG & Co. KG | Verfahren zur Synchronisierung in einem automatisierten Schaltgetriebe |
DE102008006194A1 (de) | 2008-01-26 | 2009-08-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren und Steuergerät zur Steuerung eines Triebstrangs, der ein Doppelkupplungsgetriebe aufweist |
DE102008032757B4 (de) | 2008-07-11 | 2016-03-03 | Audi Ag | Verfahren zur Unterdrückung von Getriebegeräuschen |
CN103649576B (zh) | 2011-06-30 | 2016-11-02 | 舍弗勒技术股份两合公司 | 用于避免或降低颤振的方法 |
-
2013
- 2013-06-17 WO PCT/EP2013/062471 patent/WO2013189867A1/de active Application Filing
- 2013-06-17 DE DE102013211238A patent/DE102013211238A1/de not_active Withdrawn
- 2013-06-17 CN CN201380029534.0A patent/CN104350307B/zh not_active Expired - Fee Related
- 2013-06-17 DE DE112013003113.2T patent/DE112013003113A5/de not_active Withdrawn
- 2013-06-17 US US14/400,450 patent/US10161497B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2067681B1 (de) | 2007-12-04 | 2010-12-01 | Peugeot Citroën Automobiles Société Anonyme | Steuerungsverfahren und -vorrichtung einer Kupplung einer gesteuerten, mechanischen Getriebeeingangswelle zur Vermeidung der Vibrationen in der Schleichphase des Motors |
WO2012019586A1 (de) * | 2010-08-12 | 2012-02-16 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zum betreiben eines automatisierten doppelkupplungsgetriebes |
Also Published As
Publication number | Publication date |
---|---|
CN104350307A (zh) | 2015-02-11 |
US10161497B2 (en) | 2018-12-25 |
DE102013211238A1 (de) | 2013-12-24 |
DE112013003113A5 (de) | 2015-03-26 |
US20150134211A1 (en) | 2015-05-14 |
CN104350307B (zh) | 2018-08-07 |
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