WO2018219394A1 - Method for detecting a performed self-adjustment of an automated inactivated closed clutch of a vehicle, preferably a hybrid separating clutch of a hybrid vehicle - Google Patents
Method for detecting a performed self-adjustment of an automated inactivated closed clutch of a vehicle, preferably a hybrid separating clutch of a hybrid vehicle Download PDFInfo
- Publication number
- WO2018219394A1 WO2018219394A1 PCT/DE2018/100452 DE2018100452W WO2018219394A1 WO 2018219394 A1 WO2018219394 A1 WO 2018219394A1 DE 2018100452 W DE2018100452 W DE 2018100452W WO 2018219394 A1 WO2018219394 A1 WO 2018219394A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clutch
- point
- adjustment
- detected
- vehicle
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/064—Control of electrically or electromagnetically actuated clutches
Definitions
- a method for detecting a performed self-adjustment of an automated unactuated closed clutch of a vehicle preferably a hybrid disconnect clutch of a hybrid vehicle
- the invention relates to a method for detecting a performed self-adjustment of an automated, unactuated closed clutch of a vehicle, preferably a hybrid disconnect clutch of a hybrid vehicle, in which an adjustment of a readjustment of the clutch is checked by means of setting a preload point of the clutch, wherein a clutch characteristic is adapted if the position of the preload point has changed.
- a method for controlling a friction clutch actuated by a control device of a clutch actuator with an adjusting device is known.
- the adjusting device compensates for an axial wear of friction linings which can be clamped between a counterpressure plate and a pressure plate displaceable by means of the clutch actuator by axial tracking of a lever supported axially on the clutch housing by means of a counter-pressure plate.
- the adjusting device is readjusted as a function of a control pulse of the control unit, which is determined as a function of a wear variable of the friction clutch.
- the timing of the adjustment is difficult to predict. As soon as the clutch is readjusted, the clutch characteristic shifts. If the clutch is closed again after an adjustment procedure, the coupling characteristic stored in the software no longer matches the physical clutch characteristic and the requested torque is not set correctly by the clutch.
- the software characteristic curve is adapted again to the hardware characteristic curve by the scanning point routine in the software. In the case of a larger detected deviation of the adapted touch point to a predetermined touch point, the newly adapted touch point must be made plausible in order to prevent false adaptations. However, such a plausibility check requires a great deal of time in which the vehicle is not ready for operation.
- the invention has for its object to provide a method for detecting a performed self-adjustment of an automated, unconfirmed closed clutch in which the test times are shortened and the vehicle is always ready for operation.
- the object is achieved in that the setting of the preload point is detected and a deviation of the detected preload point is determined and stored to a predetermined preload point and then a touch point of the clutch characteristic is adapted, wherein the touch point with a function of the detected Pre-load point varying Tast Vietnamese Society is compared and using this comparison further use of the touch point is checked.
- This has the advantage that it is possible to dispense with a plausibility check of the adapted touch point and nevertheless reliably detect whether a self-adjustment of the clutch has been carried out. Unacceptable delays to the operational readiness of the vehicle are thereby prevented.
- the Tast Vietnamese Superstrises is adjusted in response to a shift of the detected Vorlast concernss to the predetermined preload point.
- the limits of the permissible touch point are increased when the readjustment is established, it can be meaningfully determined to what extent a characteristic shift by the adapted touch point makes sense. Therefore, it is no longer necessary to ask for a plausibility check, which is why the period for detecting the self-adjustment of the clutch is shortened.
- the deviation of the detected preload point is stored as a bit or as a value. This depends on the software routine used and can be adapted to it.
- the touch point determined by adaptation is discarded if no deviation of the detected preload point from the predetermined preload point is detected, since no readjustment of the adjustment device has taken place. It can be in the software existing clutch characteristic can be used further, since it is assumed that this largely coincides with the physical clutch characteristic of the clutch.
- the touch point determined by adaptation for the clutch control is used further if it is detected by the comparison that an adjustment of the adjusting device has taken place.
- the adapted touch point which is also in the predetermined Tastriosgrenz Scheme, used to adapt the clutch characteristic of the software to the physical clutch characteristic, wherein the torque transmitted by the clutch is set correctly to the requested torque.
- the pre-load point setting is made during a vehicle condition "Ignition OFF.” This ensures that the most recent state of the friction clutch is evaluated and evidence of a self-adjustment of the clutch is provided.
- a hybrid disconnect clutch is arranged in a drive train of a motor vehicle, wherein the driveline is designed as a hybrid drive train
- the hybrid disconnect clutch is effectively arranged between the internal combustion engine and the electric motor, in particular when the hybrid disconnect clutch is designed as a friction clutch, it has a pressure plate, a pressure plate and a clutch plate
- the pressure plate can be displaced axially limited relative to the pressure plate. This displacement applies between an engaged operating position and an expressed Actuating position.
- the clutch disc between the pressure plate and the pressure plate for frictionally transmitting a mechanical power can be clamped.
- the actuation force of the coupling increases. This lining wear is compensated via the adjusting device.
- a clutch characteristic is checked and / or adapted new.
- a readjustment of the adjuster is checked with a preload point.
- the preload point represents an operating position of the hybrid disconnect clutch at which mechanical power transmission of the friction clutch begins.
- the preload point adaptation becomes doing so in the vehicle state "ignition OFF", wherein the preload point found by the adaptation is plausibility. If a change in the preload point is detected, a self-adjustment is carried out, which is stored in a non-volatile memory, for example an EEPROM, of a control unit. This storage can be done as a bit or as a value depending on the underlying control software.
- touchpoint limits are increased as a function of the preload point determined during the preload point adaptation. If the newly adapted touch point, which is adapted in the vehicle state "ignition ON", lies within a defined touch point limit range, then a jump of the touch point is permitted without having to plausibilize the newly adapted touch point, that is to say that the software characteristic is determined by means of the new touch point is adapted to the real existing physical clutch characteristic and thus a requested torque is provided with an increased accuracy.
- the adaptation of the clutch characteristic curve takes place without requiring a plausibility check of the touch point. If the new touch point is outside the touch point range, then this is discarded so that no adaptation of the clutch characteristic curve takes place.
- the solution presented allows a self-adjustment mechanism to be checked using a software function.
- the function stored in a software is used to test whether an adjustment has been triggered and adjusts the software characteristic accordingly, so that the software can set the unmeasurable clutch torque according to the specification.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112018002821.6T DE112018002821A5 (en) | 2017-06-01 | 2018-05-11 | Method for recognizing a self-readjustment of an automated, non-actuated closed clutch of a vehicle, preferably a hybrid disconnect clutch of a hybrid vehicle |
CN201880035355.0A CN110691922B (en) | 2017-06-01 | 2018-05-11 | Method for detecting an executed self-readjustment of an automated, non-actuated clutch of a vehicle |
JP2019566218A JP6968206B2 (en) | 2017-06-01 | 2018-05-11 | A method of identifying self-adjustment performed on a vehicle's automated, unoperated, closed clutch, preferably a hybrid release clutch on a hybrid vehicle. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017112094.7 | 2017-06-01 | ||
DE102017112094 | 2017-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018219394A1 true WO2018219394A1 (en) | 2018-12-06 |
Family
ID=62455288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2018/100452 WO2018219394A1 (en) | 2017-06-01 | 2018-05-11 | Method for detecting a performed self-adjustment of an automated inactivated closed clutch of a vehicle, preferably a hybrid separating clutch of a hybrid vehicle |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6968206B2 (en) |
CN (1) | CN110691922B (en) |
DE (2) | DE112018002821A5 (en) |
WO (1) | WO2018219394A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012219034A1 (en) | 2011-11-03 | 2013-05-08 | Schaeffler Technologies AG & Co. KG | Method for controlling an automated friction clutch |
DE102013205109A1 (en) * | 2012-04-10 | 2013-10-10 | Schaeffler Technologies AG & Co. KG | Method for operating an actuating device for a clutch |
WO2015120850A1 (en) * | 2014-02-14 | 2015-08-20 | Schaeffler Technologies AG & Co. KG | Method for determining a characteristic curve of a clutch of a clutch activation system in a drivetrain, in particular of a motor vehicle |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3331771B2 (en) * | 1994-08-31 | 2002-10-07 | スズキ株式会社 | Engine control device |
DE10054867A1 (en) * | 2000-11-06 | 2002-05-08 | Volkswagen Ag | Clutch engagement for optimal torque transmission at creeping speed selects intermediate reference point to control adjustment of second creep point |
DE10390909D2 (en) * | 2002-03-07 | 2005-01-13 | Luk Lamellen & Kupplungsbau | Control device and method for position adjustment in a motion transmission |
DE102006022170A1 (en) * | 2006-05-12 | 2008-01-31 | Zf Friedrichshafen Ag | Method for determining the running resistance of a motor vehicle |
DE102007038771A1 (en) * | 2007-08-16 | 2009-02-19 | Zf Friedrichshafen Ag | Method for starting the internal combustion engine during a load circuit in parallel hybrid vehicles |
JP5359301B2 (en) * | 2009-01-20 | 2013-12-04 | 日産自動車株式会社 | Control device for hybrid vehicle |
DE102010041581A1 (en) * | 2010-09-29 | 2012-03-29 | Robert Bosch Gmbh | Method for load-free opening of a separating clutch |
DE102010043355B4 (en) * | 2010-11-04 | 2018-04-05 | Zf Friedrichshafen Ag | Method for controlling a hybrid drive train of a motor vehicle |
CN104053923B (en) * | 2012-02-20 | 2016-08-24 | 舍弗勒技术股份两合公司 | For the method determining clutch torque requirement |
DE112013003917B4 (en) * | 2012-08-06 | 2020-07-09 | Schaeffler Technologies AG & Co. KG | Method for determining a touch point of a friction clutch device |
WO2015149793A2 (en) * | 2014-04-03 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Method for referencing a zero point of a self-closing clutch in a motor vehicle |
DE102014211381A1 (en) * | 2014-06-13 | 2015-12-17 | Schaeffler Technologies AG & Co. KG | Method and device for determining a touch point of a hybrid disconnect clutch of a hybrid vehicle |
KR101684544B1 (en) * | 2015-07-08 | 2016-12-20 | 현대자동차 주식회사 | Device and method for learning engine clutch touch point of hybrid vehicle |
DE102015009570A1 (en) * | 2015-07-23 | 2016-02-11 | Daimler Ag | Method for determining an adaptation value for a touchpoint of a starting clutch in a motor vehicle drive train |
-
2018
- 2018-05-11 JP JP2019566218A patent/JP6968206B2/en active Active
- 2018-05-11 DE DE112018002821.6T patent/DE112018002821A5/en active Pending
- 2018-05-11 WO PCT/DE2018/100452 patent/WO2018219394A1/en active Application Filing
- 2018-05-11 DE DE102018111299.8A patent/DE102018111299A1/en not_active Withdrawn
- 2018-05-11 CN CN201880035355.0A patent/CN110691922B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012219034A1 (en) | 2011-11-03 | 2013-05-08 | Schaeffler Technologies AG & Co. KG | Method for controlling an automated friction clutch |
DE102013205109A1 (en) * | 2012-04-10 | 2013-10-10 | Schaeffler Technologies AG & Co. KG | Method for operating an actuating device for a clutch |
WO2015120850A1 (en) * | 2014-02-14 | 2015-08-20 | Schaeffler Technologies AG & Co. KG | Method for determining a characteristic curve of a clutch of a clutch activation system in a drivetrain, in particular of a motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
JP2020521667A (en) | 2020-07-27 |
DE102018111299A1 (en) | 2018-12-06 |
CN110691922A (en) | 2020-01-14 |
CN110691922B (en) | 2021-06-01 |
DE112018002821A5 (en) | 2020-02-13 |
JP6968206B2 (en) | 2021-11-17 |
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