DE102017209394A1 - Method for operating a drive train and control device therefor - Google Patents
Method for operating a drive train and control device therefor Download PDFInfo
- Publication number
- DE102017209394A1 DE102017209394A1 DE102017209394.3A DE102017209394A DE102017209394A1 DE 102017209394 A1 DE102017209394 A1 DE 102017209394A1 DE 102017209394 A DE102017209394 A DE 102017209394A DE 102017209394 A1 DE102017209394 A1 DE 102017209394A1
- Authority
- DE
- Germany
- Prior art keywords
- gear
- speed
- flywheel
- internal combustion
- combustion engine
- 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- Withdrawn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
Images
Classifications
-
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/30—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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 chargeable mechanical accumulators, e.g. flywheels
-
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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
- 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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- 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
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
-
- 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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/30—Control strategies involving selection of transmission gear ratio
-
- 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
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
-
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 motors or the generators
- B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
-
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
-
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/1011—Input shaft speed, e.g. turbine speed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zum Betrieb eines Antriebsstrangs eines Kraftfahrzeugs mit einem Verbrennungsmotor, wenigstens einem Elektromotor, einem Getriebe, einer Schwungmasseeinrichtung und einer Schwungstartkupplung zwischen Verbrennungsmotor und Schwungmasseeinrichtung, mit den Schritten:
- Öffnen der Schwungstartkupplung,
- Bereitstellen der Ist-Drehzahl der Schwungmasseneinrichtung,
- Bereitstellen einer Ziel-Drehzahl der Schwungmasseneinrichtung,
- Ermittlung, ob die Ist-Drehzahl ausreichend ist, um den Verbrennungsmotor zu starten, und
Ermittlung eines niedrigeren Ganges als Zielgang, bei dem die Ist-Drehzahl der Schwungmasseeinrichtung mindestens auf eine Ziel-Drehzahl erhöht wird, die ausreicht, um den Verbrennungsmotor zu starten.
Daneben betrifft die Erfindung eine Steuerungseinrichtung.
The invention relates to a method for operating a drive train of a motor vehicle with an internal combustion engine, at least one electric motor, a transmission, a flywheel device and a fly-starting clutch between internal combustion engine and flywheel device, with the following steps:
- opening the swing start clutch,
Providing the actual speed of the flywheel device,
Providing a target speed of the flywheel device,
- Determining whether the actual speed is sufficient to start the engine, and
Determining a lower gear than target gear, in which the actual rotational speed of the flywheel device is increased at least to a target speed sufficient to start the engine.
In addition, the invention relates to a control device.
Description
Die Erfindung betrifft ein Verfahren zum Betrieb eines Antriebsstranges eines Kraftfahrzeuges mit einem Verbrennungsmotor, wenigstens einem Elektromotor, einem Getriebe, einer Schwungmasseneinrichtung und einer Schwungstartkupplung zwischen Verbrennungsmotor und Schwungmasseeinrichtung.The invention relates to a method for operating a drive train of a motor vehicle with an internal combustion engine, at least one electric motor, a transmission, a flywheel device and a fly-starting clutch between the internal combustion engine and flywheel device.
Es ist bekannt, bei hybridisierten Antriebssträngen den Verbrennungsmotor über den Elektromotor zu starten, beispielsweise nach einer Segelphase. Wird eine übliche Trennkupplung verwendet, sitzt diese zwischen Schwungrad als Schwungmasseneinrichtung und dem Elektromotor, so dass bei rein elektromotorischem Fahren der Verbrennungsmotor vom Elektromotor abgekoppelt werden kann.It is known to start the hybrid engine in hybridized powertrains via the electric motor, for example, after a sailing phase. If a conventional disconnect clutch is used, this sits between the flywheel as a flywheel device and the electric motor, so that in purely electric motor driving the engine can be decoupled from the electric motor.
Dieser Aufbau bietet den Nachteil, dass der Elektromotor kontinuierlich eine Leistungsreserve für das Starten des Verbrennungsmotors vorhalten muss.This structure has the disadvantage that the electric motor must continuously maintain a power reserve for starting the internal combustion engine.
Es ist daher weiterhin bekannt, zwischen Verbrennungsmotor und Schwungmasseeinrichtung eine Schwungstartkupplung vorzusehen. Diese kann statt der Trennkupplung geöffnet werden, so dass der Elektromotor die Schwungmasseeinrichtung kontinuierlich antreiben kann und somit die Schwungmasseeinrichtung als eine Art Energiespeicher verwendet werden kann.It is therefore still known to provide a fly-starting clutch between the internal combustion engine and the flywheel device. This can be opened instead of the separating clutch, so that the electric motor can drive the flywheel device continuously and thus the flywheel device can be used as a kind of energy storage.
Ein Problem besteht bei Getrieben, bei denen die Schwungmasse nicht unabhängig von der Getriebedrehzahl beschleunigt werden kann. Bei diesen stellt die Schwungmasseneinrichtung somit nur eine gegebene Rotationsenergie bereit.A problem exists in transmissions where the flywheel mass can not be accelerated independently of the transmission speed. In these, the flywheel device thus provides only a given rotational energy.
Ausgehend hiervon ist es Aufgabe der vorliegenden Erfindung, ein Verfahren anzugeben, bei dem die vorzuhaltende Leistung des Elektromotors zum Starten des Verbrennungsmotors weiter verringert ist und der Einfluß auf den Fahrbetrieb verringert ist.Proceeding from this, it is an object of the present invention to provide a method in which the vorzuhaltende power of the electric motor for starting the engine is further reduced and the influence on the driving operation is reduced.
Zur Lösung dieses Problems wird ein Verfahren mit den Schritten nach Anspruch 1 vorgeschlagen.To solve this problem, a method with the steps according to
Als Kern der Erfindung wird angesehen, dass in einer Steuereinheit nach dem Empfangen eines Motorstopp-Signals für den Verbrennungsmotor die Ist-Drehzahl der Schwungmasseneinrichtung festgestellt wird, um davon ausgehend und gegebenenfalls unter Berücksichtigung weiterer Randbedingungen festzustellen, ob diese Drehzahl ausreichend ist, um den Verbrennungsmotor zu starten. Für den Fall, dass die Ist-Drehzahl zu gering ist wird ein niedrigerer Gang ermittelt, bei dem die Ist-Drehzahl der Schwungmasseneinrichtung mindestens diejenige Drehzahl als Ziel-Drehzahl erreicht hat, bei der die Rotationsenergie der Schwungmasseneinrichtung ausreicht, um den Verbrennungsmotor zu starten.As a core of the invention, it is considered that in a control unit after receiving an engine stop signal for the internal combustion engine, the actual speed of the flywheel device is determined in order to determine from this and optionally taking into account further boundary conditions, if this speed is sufficient to the internal combustion engine to start. In the event that the actual speed is too low, a lower gear is determined, in which the actual rotational speed of the flywheel device has reached at least that rotational speed as the target rotational speed at which the rotational energy of the flywheel device is sufficient to start the internal combustion engine.
Es soll also die Getriebedrehzahl, hier die Drehzahl der Getriebeeingangswelle, so angepasst werden, dass die resultierende Ist-Drehzahl der Schwungmasseneinrichtung ausreicht, um den Verbrennungsmotor zu starten. Durch die erhöhte Drehzahl wird nämlich die in der Schwungmasseneinrichtung gespeicherte Rotationsenergie erhöht.So it should be the transmission speed, here the speed of the transmission input shaft, adapted so that the resulting actual speed of the flywheel device is sufficient to start the engine. Due to the increased speed namely stored in the flywheel mass rotational energy is increased.
Letzten Endes lassen sich die von der Schwungmasseneinrichtung zur Verfügung gestellten Energie und die vom Verbrennungsmotor benötigte Energie in Form der Drehzahl der Schwungmasseeinrichtung angeben. Somit kann auch eine Ziel-Drehzahl ermittelt werden, die ausreicht, um den Verbrennungsmotor zu starten.In the end, the energy provided by the flywheel device and the energy required by the engine can be expressed in terms of the speed of the flywheel device. Thus, also a target speed can be determined, which is sufficient to start the engine.
Es ist dabei nicht notwendigerweise eine einzige Ziel-Drehzahl, die Ziel-Drehzahl kann auch von mehreren Parametern abhängen.It is not necessarily a single target speed, the target speed may also depend on several parameters.
Die Schwungmasseneinrichtung kann als Einmassenschwungrad oder Zweimassenschwungrad ausgebildet sein.The flywheel device may be designed as a single flywheel or dual mass flywheel.
Das Verfahren wird durch eine Steuerungseinrichtung durchgeführt.The method is performed by a controller.
Vorzugsweise kann die Ermittlung, ob die Ist-Drehzahl ausreichend ist, anhand eines Vergleichs mit einem Schwellenwert durchgeführt werden. Der Schwellenwert kann dabei ein fester Schwellenwert sein oder alternativ in Abhängigkeit wenigstens eines Parameters berechnet werden. Weiter alternativ kann auch ein Schwellenwert aus einer Liste anhand wenigstens eines Parameters ausgewählt werden. Unterschreitet die Ist-Drehzahl den Schwellenwert, so ist das Getriebe herunterzuschalten.Preferably, the determination as to whether the actual rotational speed is sufficient can be carried out on the basis of a comparison with a threshold value. The threshold value can be a fixed threshold value or, alternatively, calculated as a function of at least one parameter. As an alternative, a threshold value can also be selected from a list on the basis of at least one parameter. If the actual speed falls below the threshold, the gearbox must be downshifted.
Vorteilhafterweise kann anhand der Drehzahl-Differenz zwischen Ist-Drehzahl und Ziel-Drehzahl der Gang ermittelt werden, in den geschaltet wird. Hierbei handelt es sich um eine einfache Berechnung, bei der die Übersetzungsverhältnisse der Gänge berücksichtigt werden. Dieser Gang ist dann der Ziel-Gang.Advantageously, based on the speed difference between actual speed and target speed of the gear can be determined, is switched into the. This is a simple calculation that takes into account the gear ratios of the gears. This gear is then the target gear.
Vorzugsweise kann das Getriebe in einen niedrigeren Gang geschaltet werden, so dass die Ist-Drehzahl der Schwungmasseeinrichtung mindestens auf die Ziel-Drehzahl erhöht wird, die ausreicht, um den Verbrennungsmotor zu starten. Dieser Schritt kann frühestens nach der Ermittlung des Ziel-Ganges folgen, da selbstverständlich der Gang bekannt sein muss, in den geschaltet werden soll.Preferably, the transmission may be shifted to a lower gear so that the actual rotational speed of the flywheel device is increased at least to the target rotational speed sufficient to start the engine. This step can follow at the earliest after the determination of the target gear, since of course the gear must be known to be switched to.
Vorzugsweise kann der ermittelte Gang mit dem Gang für den optimalen Wirkungsgrad verglichen werden und falls der Gang für den optimalen Wirkungsgrad kleiner ist als der ermittelte Gang, wird der Gang für den optimalen Wirkungsgrad als Ziel-Gang verwendet. Der zuerst ermittelte Gang ist derjenige Gang, der die Schwungmasseneinrichtung auf eine Ist-Drehzahl erhöht, die größer als die Ziel-Drehzahl sein soll. Alle kleineren Gänge können grundsätzlich ebenfalls verwendet werden. Einen kleineren Gang zu verwenden ist aber nur dann sinnvoll, wenn sich dadurch ein größerer Wirkungsgrad erzielen lässt. Dies wird in einer Zusatzabfrage und vorzugsweise vor dem tatsächlichen Schalten des Ganges berechnet. Preferably, the determined gear may be compared to the optimum efficiency gear, and if the optimum efficiency gear is less than the determined gear, the optimum gear gear is used as the target gear. The first gear determined is the one that increases the flywheel mass to an actual speed that is greater than the target speed. All smaller gears can also be used in principle. However, using a smaller gear only makes sense if it allows greater efficiency to be achieved. This is calculated in an additional query and preferably before actually shifting the gear.
Vorteilhafterweise kann der Antriebsstrang eine Trennkupplung zwischen Schwungmasseeinrichtung und Getriebe aufweisen, die zum Herunterschalten des Ganges geöffnet wird. Als geöffnet wird dabei die Trennkupplung bis zu einer Drehmomentübertragung von maximal 10 bis 20 Nm angesehen, insbesondere bis 10 Nm. Bevorzugt wird die Trennkupplung bis zum Schließen der Schwungstartkupplung schlupfend mit bis zu 20Nm, insbesondere mit bis zu 10 Nm, betrieben, um so einerseits die Schwungmasseneinrichtung auf die Ziel-Drehzahl bringen zu können und andererseits die Auswirkungen auf das Fahrwerk gering zu halten. Beim Schließen der Schwungstartkupplung wird die Trennkupplung aber vollständig geöffnet, da dann einerseits die Schwungmasseneinrichtung nicht mehr beschleunigt werden muss und andererseits es sonst zu einem Rucken käme.Advantageously, the powertrain may include a disconnect clutch between flywheel assembly and transmission that is opened to downshift the gear. As open while the separating clutch is considered up to a torque transmission of a maximum of 10 to 20 Nm, in particular up to 10 Nm. Preferably, the clutch until the closing of the flywheel clutch slipping with up to 20Nm, in particular with up to 10 Nm, operated so as to be able to bring the flywheel device on the one hand to the target speed and on the other hand to keep the impact on the chassis low. When closing the flywheel clutch, however, the clutch is fully opened, because then on the one hand the flywheel device no longer needs to be accelerated and on the other hand it would otherwise come to a jerk.
Vorzugsweise kann vor dem vollständigen Öffnen der Trennkupplung geprüft werden, ob die Ist-Drehzahl der Schwungmasseeinrichtung größer ist als die Ziel-Drehzahl. Liefert das Herunterschalten des Getriebes nicht die ermittelte Ziel-Drehzahl und ist diese zu gering im Vergleich zur vorgegebenen Ziel-Drehzahl, so kann dies beim Öffnen der Trennkupplung ermittelt werden. In diesem Fall kann beispielsweise auf ein vollständiges Öffnen der Trennkupplung verzichtet werden, stattdessen wird diese weiter schlupfend betrieben und noch einen Gang weiter heruntergeschaltet.Preferably, it can be checked before the complete opening of the separating clutch, if the actual speed of the flywheel device is greater than the target speed. If the downshifting of the transmission does not deliver the determined target speed and if this is too low compared to the preset target speed, this can be determined when opening the separating clutch. In this case, for example, can be dispensed with a complete opening of the separating clutch, instead this continues to operate slipping and down another gear down.
Neben der Schwungstartkupplung und der Trennkupplung kann der Antriebsstrang auch eine Anfahrkupplung und im Falle eines Doppelkupplungsgetriebes eine weitere Lastschaltkupplung aufweisen. Diese sind üblicherweise im Getriebegehäuse und dort in der Kupplungsglocke angeordnet.In addition to the flywheel clutch and the clutch, the powertrain can also have a starting clutch and, in the case of a dual-clutch transmission, a further power-shift clutch. These are usually arranged in the gear housing and there in the clutch bell.
Vorzugsweise kann beim Start des Verbrennungsmotors das Getriebe in einen höheren Gang geschaltet werden. Der Verbrennungsmotor wird dabei auch hochbeschleunigt, so dass am Ende eine Synchronisation des Motors mit dem Getriebe hergestellt ist.Preferably, at the start of the internal combustion engine, the transmission can be switched to a higher gear. The internal combustion engine is also accelerated high, so that at the end of a synchronization of the engine is made with the transmission.
Bevorzugt wird der Verbrennungsmotor vor dem Schließen der Trennkupplung auf eine höhere Drehzahl beschleunigt als die Drehzahl der Getriebeeingangswelle. Beim Schließen der Trennkupplung beschleunigt der Verbrennungsmotor dann das Kraftfahrzeug. Dies ist gewollt, dass die Beendigung bspw. der Segelphase durch ein Treten des Gaspedals erfolgt.Preferably, the internal combustion engine is accelerated to a higher speed than the rotational speed of the transmission input shaft before closing the separating clutch. When closing the clutch, the engine then accelerates the vehicle. This is intended that the termination, for example, the sailing phase is done by pedaling the accelerator pedal.
Vorteilhafterweise wird die Schwungmasseneinrichtung in Abhängigkeit der Getriebedrehzahl beschleunigt. D. h., dass die Drehzahl der Schwungmasseneinrichtung und die Getriebedrehzahl voneinander abhängen, genauer gesagt hängt die Drehzahl der Schwungmasseneinrichtung von der Getriebedrehzahl ab. Die Drehzahlen sind dabei nicht notwendigerweise identisch. Je nach Schließungsgrad der Trennkupplung ist die Kopplung stärker oder schwächer.Advantageously, the flywheel device is accelerated depending on the transmission speed. That is, the rotational speed of the flywheel device and the transmission speed depend on each other, more specifically, the speed of the flywheel device depends on the transmission speed. The speeds are not necessarily identical. Depending on the degree of closure of the separating clutch, the coupling is stronger or weaker.
Vorzugsweise kann die Ermittlung, ob die Ist-Drehzahl der Schwungmasseneinrichtung ausreichend ist, um den Verbrennungsmotor zu starten, vor oder beim Abschalten des Verbrennungsmotors durchgeführt werden. So kann bereits beim Abschalten des Verbrennungsmotors sichergestellt werden, dass zu dessen Wiederstart genügend Energie in der Schwungmasseneinrichtung vorhanden ist. Alternativ kann die Ermittlung auch nach dem Erhalt des Motorstop-Signals erfolgen.Preferably, the determination as to whether the actual rotational speed of the flywheel mass device is sufficient to start the internal combustion engine can be carried out before or during switching off of the internal combustion engine. Thus, it can already be ensured when switching off the internal combustion engine that sufficient energy is available in the flywheel device for its restart. Alternatively, the determination can also be made after receipt of the engine stop signal.
Daneben betrifft die Erfindung eine Steuerungseinrichtung. Diese ist ausgebildet zur Durchführung des beschriebenen Verfahrens.In addition, the invention relates to a control device. This is designed to carry out the method described.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen und Figuren. Dabei zeigen:
-
1 einen Antriebsstrang in schematischer Ansicht, -
2 ein Ablaufschema in einer ersten Ausgestaltung, -
3 ein Ablaufschema in einer zweiten Ausgestaltung, -
4 ein Ablaufschema in einer dritten Ausgestaltung, -
5 ein Ablaufschema in einer vierten Ausgestaltung, und -
6 ein Ablaufschema in einer fünften Ausgestaltung.
-
1 a drive train in a schematic view, -
2 a flowchart in a first embodiment, -
3 a flowchart in a second embodiment, -
4 a flowchart in a third embodiment, -
5 a flowchart in a fourth embodiment, and -
6 a flowchart in a fifth embodiment.
Die Schwungstartkupplungsanordnung
Dabei trennt die Schwungstartkupplungsanordnung
Die Schwungstartkupplungsanordnung
Die
Die Steuerungseinrichtung, die das Verfahren steuert kann eine separate Steuerungseinrichtung sein oder Teil einer Steuerungseinrichtung mit zusätzlichen AUfgaben.The control device that controls the method may be a separate control device or part of a control device with additional tasks.
In Schritt
Alternativ kann ermittelt werden, dass die Ist-Drehzahl der Schwungmasseneinrichtung
In Schritt
Die
Die
Nach dem Herunterschalten des Getriebes in Schritt
Ergänzend zu dem aus den
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Antriebsstrangpowertrain
- 22
- Verbrennungsmotorinternal combustion engine
- 33
- SchwungstartkupplungsanordnungMomentum starting clutch arrangement
- 44
- SchwungmasseneinrichtungFlywheel device
- 55
- Trennkupplungseparating clutch
- 66
- Elektromotorelectric motor
- 77
- Getriebetransmission
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017209394.3A DE102017209394A1 (en) | 2017-06-02 | 2017-06-02 | Method for operating a drive train and control device therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017209394.3A DE102017209394A1 (en) | 2017-06-02 | 2017-06-02 | Method for operating a drive train and control device therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102017209394A1 true DE102017209394A1 (en) | 2018-12-06 |
Family
ID=64279028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102017209394.3A Withdrawn DE102017209394A1 (en) | 2017-06-02 | 2017-06-02 | Method for operating a drive train and control device therefor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102017209394A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3022373A1 (en) * | 1980-06-14 | 1981-12-24 | Volkswagenwerk Ag | VEHICLE, PARTICULARLY PERSONAL VEHICLES |
DE102004002061A1 (en) * | 2004-01-15 | 2005-08-04 | Zf Friedrichshafen Ag | Method for controlling and regulating a drive train of a hybrid vehicle and drive train of a hybrid vehicle |
DE102006009589A1 (en) * | 2006-03-02 | 2007-09-06 | Zf Friedrichshafen Ag | Method for controlling an automatic transmission and transmission control device with consumption map determining device |
DE102007001424A1 (en) * | 2007-01-09 | 2008-07-31 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for starting a piston engine |
DE102011078670A1 (en) * | 2011-07-05 | 2013-01-10 | Zf Friedrichshafen Ag | A method of operating a hybrid powertrain of a vehicle |
DE102006022395B4 (en) * | 2006-05-12 | 2015-03-05 | Robert Bosch Gmbh | Method for starting an internal combustion engine in a hybrid drive |
-
2017
- 2017-06-02 DE DE102017209394.3A patent/DE102017209394A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3022373A1 (en) * | 1980-06-14 | 1981-12-24 | Volkswagenwerk Ag | VEHICLE, PARTICULARLY PERSONAL VEHICLES |
DE102004002061A1 (en) * | 2004-01-15 | 2005-08-04 | Zf Friedrichshafen Ag | Method for controlling and regulating a drive train of a hybrid vehicle and drive train of a hybrid vehicle |
DE102006009589A1 (en) * | 2006-03-02 | 2007-09-06 | Zf Friedrichshafen Ag | Method for controlling an automatic transmission and transmission control device with consumption map determining device |
DE102006022395B4 (en) * | 2006-05-12 | 2015-03-05 | Robert Bosch Gmbh | Method for starting an internal combustion engine in a hybrid drive |
DE102007001424A1 (en) * | 2007-01-09 | 2008-07-31 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for starting a piston engine |
DE102011078670A1 (en) * | 2011-07-05 | 2013-01-10 | Zf Friedrichshafen Ag | A method of operating a hybrid powertrain of a vehicle |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2729336B1 (en) | Method for operating a hybrid drive train of a vehicle | |
DE102010044618B4 (en) | Method for driving a hybrid drive train | |
EP2931546B1 (en) | Method for controlling a drive train of a motor vehicle | |
EP1976740B1 (en) | Method for controlling a motor vehicle drive train | |
EP2708400B1 (en) | Method for controlling a hybrid power train | |
EP2665632B1 (en) | Method and device for operating a drive device | |
DE102006054405B4 (en) | Electrodynamic starting element and method for controlling an electrodynamic starting element | |
EP2619482B1 (en) | Method for controlling shifts in a vehicle transmission | |
DE102013208020A1 (en) | Modular hybrid transmission with one-way clutch | |
DE202005019996U1 (en) | Vehicle and device for controlling engine start in a vehicle | |
DE102011089467A1 (en) | Hybrid drive of a motor vehicle and method for operating the same | |
WO2008064633A1 (en) | Method and device for adapting a clutch in a hybrid drive train of a vehicle | |
DE102007038771A1 (en) | Method for starting the internal combustion engine during a load circuit in parallel hybrid vehicles | |
DE102014200253B4 (en) | Method for starting an internal combustion engine of a hybrid vehicle and hybrid vehicle | |
DE102008025516A1 (en) | Control of double-stage switching in a hybrid vehicle | |
WO2017060010A1 (en) | Method and device for operating a drive device, drive device | |
WO2019034345A1 (en) | Hybrid drive transmission unit and method for operating a vehicle with a hybrid drive | |
EP3423321A1 (en) | Method for starting an internal combustion engine of a hybrid vehicle and control unit for operating the method | |
DE102009045485A1 (en) | Method for operating a drive device, drive device | |
EP3102854B1 (en) | Method for shifting a dual clutch transmission | |
EP2707237A1 (en) | Method for controlling a hybrid drive train of a motor vehicle | |
DE102010028935A1 (en) | Method for operating drive train of motor vehicle i.e. hybrid vehicle, involves connecting friction clutch between electric machine and gearbox, and synchronizing transmission shaft of gearbox under utilization of rotor of electric machine | |
DE102017209394A1 (en) | Method for operating a drive train and control device therefor | |
WO2021228665A1 (en) | Method for controlling a hybrid drivetrain | |
DE102016221109A1 (en) | Method and control system for operating a motor vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R163 | Identified publications notified | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |