DE102005001648A1 - Method for controlling torque converter and system for maintenance of hydraulic pressure in switched-off engine, involves controlling or regulating of pressure in force flow at switching element of transmission - Google Patents
Method for controlling torque converter and system for maintenance of hydraulic pressure in switched-off engine, involves controlling or regulating of pressure in force flow at switching element of transmission Download PDFInfo
- Publication number
- DE102005001648A1 DE102005001648A1 DE200510001648 DE102005001648A DE102005001648A1 DE 102005001648 A1 DE102005001648 A1 DE 102005001648A1 DE 200510001648 DE200510001648 DE 200510001648 DE 102005001648 A DE102005001648 A DE 102005001648A DE 102005001648 A1 DE102005001648 A1 DE 102005001648A1
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- Prior art keywords
- engine
- transmission
- switching element
- controlling
- torque converter
- 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.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001276 controlling effect Effects 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 4
- 238000012423 maintenance Methods 0.000 title description 2
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000007858 starting material Substances 0.000 description 5
- 230000035939 shock Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18027—Drive off, accelerating from standstill
-
- 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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
-
- 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
-
- 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
- F16H61/0059—Braking of gear output shaft using simultaneous engagement of friction devices applied for different gear ratios
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Steuerung eines einen Drehmomentwandler und ein System zur Aufrechterhaltung des hydraulischen Druckes bei abgeschaltetem Motor aufweisenden Automatgetriebes eines Kraftfahrzeugs im Motor-Start-Automatik-Modus, gemäß dem Oberbegriff des Patentanspruchs 1.The The present invention relates to a method for controlling a a torque converter and a system for maintaining the hydraulic pressure with automatic transmission with motor switched off a motor vehicle in the engine start-automatic mode, according to the preamble of Patent claim 1.
Um bei Kraftfahrzeugen eine zusätzliche Kraftstoffersparnis zu erreichen, ist bekannt, den Motor bei Fahrzeugstillstand automatisch abzustellen und wieder automatisch, beispielsweise durch Erkennung eines Anfahrwunsches des Fahrers, zu starten. Um ein Automatgetriebe in diesem sogenannten Motor-Start-Automatik-Modus ("MSA") zu steuern, wird nach dem Stand der Technik eine elektrische Zusatzpumpe zur Aufrechterhaltung der hydraulischen Versorgung des Getriebes benötigt, da diese bei ausgeschaltetem Motor durch die mechanische und vom Motor angetriebene Pumpe nicht mehr gegeben ist.Around in motor vehicles, an additional fuel economy It is known to reach the engine automatically when the vehicle is stationary shut off and again automatically, for example by detection a request of the driver to start. To an automatic transmission in this so-called engine start-automatic mode ("MSA") to steer, after the prior art, an electric auxiliary pump for maintenance the hydraulic supply of the transmission needed, as this when switched off Motor not driven by the mechanical and motor-driven pump more is given.
Mittels der Aufrechterhaltung der hydraulischen Versorgung durch die elektrisch angetriebene Zusatzpumpe ist es möglich, den zuletzt vor dem Ausschalten des Motors geschalteten Gang zu halten. Hierbei werden durch den Einsatz von Kurbelwellenstartergeneratoren oder Riemenstartern sehr kurze Motorstartzeiten zwischen 200 und 800 ms erreicht.through maintaining the hydraulic supply by the electric driven auxiliary pump, it is possible the last before switching off to keep the engine switched gear. Here are by the Use of crankshaft starter generators or belt starters very short Motor start times between 200 and 800 ms reached.
Das Halten des vor dem Ausschalten des Motors geschalteten Ganges ist notwendig, da der manuelle Getriebewählhebel dem Fahrer seine Wunschposition bzw. den eingelegten Gang signalisiert. Wenn die Hydraulik durch die Zusatzpumpe nicht weiterversorgt werden würde, könnte es bei einem durch das Abschalten des Motors bedingten Druckabfall oder bei einem durch den Aufbau der Versorgung durch die mechanische Getriebepumpe beim Starten des Motors bedingten Druckstoß zu einer Fehlstellung von Ventilen im hydraulischen Schaltgerät kommen.The Holding the gearshifted before switching off the engine is necessary, since the manual gear selector lever the driver his desired position or the engaged gear signals. When the hydraulics go through the auxiliary pump would not be further supplied, it could be at a through the Turn off the engine conditional pressure drop or a through the structure of the supply by the mechanical gear pump at Starting the engine conditional pressure surge to a malposition of Valves come in the hydraulic switching device.
Wenn sich dabei der Wählschieber, der mit dem Wählhebel im Fahrzeuginnenraum mechanisch verbunden ist, beim Ausschalten des Motors in einer Fahrposition befindet, kann es nach dem Start des Motors zu Ventilschieberstellungen kommen, die nicht zur vom Wählhebel angezeigten Fahrposition passen und zu einem kurzfristigen Schalten von einzelnen Schaltelementen führen können. Folglich kann nach dem Stand der Technik ohne den Einsatz einer elektrischen Zusatzpumpe zur Aufrechterhaltung der hydraulischen Versorgung des Getriebes ein Neustart des Motors mit dem vom Fahrer vor dem Ausschalten des Motors gewählten Gang nicht gewährleistet werden.If while the selector slide, the one with the selector lever is mechanically connected in the vehicle interior, when you turn off the engine is in a driving position, it can after the start of the engine come to valve spool positions that are not to the from selector lever displayed driving position and a short-term switching lead from individual switching elements can. Consequently, in the prior art without the use of a electric auxiliary pump to maintain the hydraulic Supply the gearbox a restart of the engine with that of the driver gear selected before switching off the engine is not guaranteed become.
Wenn keine Zusatzpumpe zur Aufrechterhaltung der hydraulischen Versorgung des Getriebes vorgesehen ist, entstehen Wartezeiten, bis die Schaltelemente befüllt werden, was die Spontaneität beeinträchtigt.If no additional pump to maintain the hydraulic supply the transmission is provided, waiting times arise until the switching elements filled be what the spontaneity impaired.
Wenn ein Automatgetriebe, umfassend einen Wandler mit harter Wandlerkennung, was insbesondere bei starken Motorisierungen der Fall ist, im Motor-Start-Automatik-Modus betrieben werden soll, ergibt sich aufgrund der durch die geforderte Spontaneität des Startvorgangs notwendigen steilen Motordrehzahlgradienten beim Startvorgang über den dynamischen Wandlerkennungsaufbau ein steiler Abtriebsmomentaufbau, was beim Startvorgang in nachteiliger Weise vom Fahrer als Stoss wahrgenommen wird und den Komfort beeinträchtigt.If an automatic transmission comprising a converter with hard conversion detection, which is particularly the case with strong engines, the case in the engine-start-automatic mode is to be operated, due to the required by the spontaneity the startup necessary steep engine speed gradient at Startup process via the dynamic transducer identification structure a steep output torque build-up, what in the starting process in a disadvantageous way from the driver as a shock is perceived and impaired comfort.
Des weiteren ist für einen Motorstart, bedingt durch das sich beim Startvorgang aufbauende Wandlerpumpenaufnahmemoment (die Turbinenseite wird nicht mitbeschleunigt), ein zusätzliches Startermoment vom Starter aufzu bringen, wodurch das Startersystem in nachteiliger Weise größer dimensioniert werden muss.Of another is for an engine start, due to the building up during the starting process Converter pump torque (the turbine side is not mitbeschleunigt), an additional Starter torque from the starter bring up, causing the starter system be dimensioned disadvantageously larger got to.
Aus
der
Ein
weiteres Beispiel eines Automatgetriebes mit einer elektromotorisch
angetriebenen Zusatzölpumpe
ist im Rahmen der
Des
weiteren ist aus der
Ferner
ist in der
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Steuerung eines einen Drehmomentwandler und ein System zur Aufrechterhaltung des hydraulischen Druckes bei abgeschaltetem Motor aufweisenden Automatgetriebes eines Kraftfahrzeugs im Motor-Start-Automatik-Modus anzugeben, welches den aufgrund des steilen Abtriebsmomentaufbaus beim Startvorgang entstehenden Stoss weitgehend verhindert.Of the The present invention is based on the object, a method for controlling a torque converter and a system for maintaining hydraulic pressure with the engine off Automatic transmission of a motor vehicle in the engine start-automatic mode indicate which due to the steep output torque build-up largely prevented during the starting process shock.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere erfindungsgemäße Ausgestaltungen und Vorteile gehen aus den Unteransprüchen hervor.These The object is solved by the features of claim 1. Further Embodiments of the invention and advantages are apparent from the dependent claims.
Demnach wird im Rahmen des erfindungsgemäßen Verfahrens zur Steuerung eines einen Drehmomentwandler und ein System zur Aufrechterhaltung des hydraulischen Druckes bei abgeschaltetem Motor aufweisenden Automatgetriebes eines Kraftfahrzeugs im Motor-Start-Automatik-Modus vorgeschlagen, beim Wiedereinschalten des Motors den Druck bei einem sich im Kraftfluss befindenden Schaltelement des Getriebes derart gesteuert oder geregelt abzusenken, dass dieses Schaltelement beim Startvorgang nur ein definiertes Restmoment an den Antriebsstrang übertragen kann (d. h. das Schaltelement wird in Schlupf gebracht), wobei, wenn der Startvorgang weiter fortgeschritten oder beendet ist bzw. wenn der Motor läuft, dieses Schaltelement definiert geschlossen wird, womit ein definierter Abtriebsmomentenaufbau erreicht wird.Therefore is in the context of the method according to the invention for controlling a torque converter and a system for maintaining hydraulic pressure with the engine off Automatic transmission of a motor vehicle in the engine start-automatic mode suggested, when the engine is restarted the pressure at a in the power flow switching element of the transmission so to reduce controlled or regulated that this switching element at Start process transferred only a defined residual torque to the drive train can (that is, the switching element is slipped), wherein, if the startup process is more advanced or finished or if the engine is running, This switching element is defined closed, bringing a defined Output torque structure is achieved.
Dabei kann das sich im Kraftfluß befindliche Schaltelement auch schon unmittelbar vor dem Abschalten des Motors bzw. in der Abstellphase des Motors selbst in Schlupf gebracht werden, um evtl. Rückwirkungen des Motorabstellens auf den Triebstrang zu entkoppeln.there can be located in the power flow switching element even before switching off the engine or in the Stopping the engine itself be slipped to possibly repercussions engine shutdown on the driveline decouple.
Alternativ oder zusätzlich dazu wird vorgeschlagen, das Getriebe bei abgeschaltetem Motor bzw. unmittelbar vor dem Startvorgang über eine definierte Schaltelementenlogik zu verblocken, wobei, wenn der Startvorgang weiter fortgeschritten oder beendet ist bzw. wenn der Motor läuft, die Verblockung durch ein definiertes Öffnen des daran beteiligten Schaltelementes bzw. der daran beteiligten Schaltelemente gelöst wird.alternative or additionally For this purpose, it is proposed that the transmission with the engine off or immediately before the start process via a defined switching logic to lock, taking when the boot process more advanced or is completed or when the engine is running, the blocking by a defined opening the involved switching element or the switching elements involved solved becomes.
Im Rahmen eine vorteilhaften Weiterbildung der Erfindung erfolgt das definierte Lösen der Verblockung nach dem Erkennen des Fahrerwunsches bzw. nach dem Betätigen des Gaspedals seitens des Fahrers. Hierbei kann vorgesehen sein, dass die Verblockung erst dann aufgelöst wird, wenn der Motor das gegen ein eventuelles Zurückrollen des Fahrzeugs erforderliche Drehmoment aufgebaut hat.in the Frame an advantageous development of the invention takes place defined release the blocking after detecting the driver's request or after the Actuate the accelerator on the part of the driver. This can be provided that the blocking is only resolved when the engine is the against a possible rollback the vehicle has built up required torque.
Durch die erfindungsgemäße Konzeption wird der eingangs beschriebene, im Motor-Start-Automatik-Modus am Getriebeeingang eingeleitete Stoss vom Abtrieb abgefangen, wodurch der Komfort erheblich verbessert wird.By the concept of the invention is the initially described, in the engine start-automatic mode at the transmission input initiated shock intercepted by the output, thereby increasing the comfort significantly is improved.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510001648 DE102005001648A1 (en) | 2005-01-13 | 2005-01-13 | Method for controlling torque converter and system for maintenance of hydraulic pressure in switched-off engine, involves controlling or regulating of pressure in force flow at switching element of transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510001648 DE102005001648A1 (en) | 2005-01-13 | 2005-01-13 | Method for controlling torque converter and system for maintenance of hydraulic pressure in switched-off engine, involves controlling or regulating of pressure in force flow at switching element of transmission |
Publications (1)
Publication Number | Publication Date |
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DE102005001648A1 true DE102005001648A1 (en) | 2006-09-14 |
Family
ID=36914461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE200510001648 Withdrawn DE102005001648A1 (en) | 2005-01-13 | 2005-01-13 | Method for controlling torque converter and system for maintenance of hydraulic pressure in switched-off engine, involves controlling or regulating of pressure in force flow at switching element of transmission |
Country Status (1)
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DE (1) | DE102005001648A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010003510A1 (en) * | 2010-03-31 | 2011-10-06 | Zf Friedrichshafen Ag | Method for operating drive train with drive unit and automatic gear, involves assigning automatic gear to hydraulic pump, which is operable by electro motor independent from drive unit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10009504A1 (en) * | 2000-02-29 | 2001-08-30 | Mannesmann Sachs Ag | Control method for drive system for motor vehicles with first step to move drive unit into stand-by non-operative condition when start/stop function is activated, and second step to secure vehicle |
DE10246839A1 (en) * | 2002-10-08 | 2004-04-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Power transmission for hybrid road vehicle can operate as parallel or series hybrid and incorporates two electrical machines and double- plate automatic clutch |
-
2005
- 2005-01-13 DE DE200510001648 patent/DE102005001648A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10009504A1 (en) * | 2000-02-29 | 2001-08-30 | Mannesmann Sachs Ag | Control method for drive system for motor vehicles with first step to move drive unit into stand-by non-operative condition when start/stop function is activated, and second step to secure vehicle |
DE10246839A1 (en) * | 2002-10-08 | 2004-04-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Power transmission for hybrid road vehicle can operate as parallel or series hybrid and incorporates two electrical machines and double- plate automatic clutch |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010003510A1 (en) * | 2010-03-31 | 2011-10-06 | Zf Friedrichshafen Ag | Method for operating drive train with drive unit and automatic gear, involves assigning automatic gear to hydraulic pump, which is operable by electro motor independent from drive unit |
DE102010003510B4 (en) | 2010-03-31 | 2022-11-17 | Zf Friedrichshafen Ag | Method of operating a power train |
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