DE102019212693B4 - Method for shifting a transmission in a drive train - Google Patents
Method for shifting a transmission in a drive train Download PDFInfo
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- DE102019212693B4 DE102019212693B4 DE102019212693.6A DE102019212693A DE102019212693B4 DE 102019212693 B4 DE102019212693 B4 DE 102019212693B4 DE 102019212693 A DE102019212693 A DE 102019212693A DE 102019212693 B4 DE102019212693 B4 DE 102019212693B4
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- transmission
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- gear
- combustion engine
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 230000007704 transition Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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Classifications
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- 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
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- 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
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- 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
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- 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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
- B60W10/113—Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input clutch
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- 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
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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- 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
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0425—Bridging torque interruption
- F16H2061/0429—Bridging torque interruption by torque supply with a clutch in parallel torque path
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Es wird ein Verfahren zum Schalten eines Getriebes in einem Antriebsstrang vorgeschlagen, mit einem Verbrennungsmotor und einer elektrischen Maschine mit einem Doppelkupplungsgetriebe mit einem ersten und zweiten Teilgetriebe und den Teilgetrieben jeweils zugeordneten Kupplungen, wobei die elektrische Maschine in ein Teilgetriebe eintreibt, an dem die Gangstufen 2 und 4 angeordnet sind, wobei zum zugunterbrechungsfreien Schalten zwischen zwei Gangstufen in rein elektrischer Fahrt eine Gangstufe auf dem anderen Teilgetriebe und der Verbrennungsmotor als Schwungspeicher verwendet werden.A method for shifting a transmission in a drive train is proposed, with an internal combustion engine and an electric machine with a double clutch transmission with a first and second sub-transmission and clutches assigned to the sub-transmissions, the electric machine driving into a sub-transmission on which the gear stages 2 and 4 are arranged, with one gear on the other sub-transmission and the internal combustion engine being used as a momentum accumulator for uninterrupted shifting between two gears in purely electric driving.
Description
Die Erfindung betrifft ein Verfahren zum Schalten eines Getriebes in einem Antriebsstrang mit einem Verbrennungsmotor und einer elektrischen Maschine mit einem Doppelkupplungsgetriebe mit einem ersten und zweiten Teilgetriebe und den Teilgetrieben jeweils zugeordneten Kupplungen, wobei die elektrische Maschine in ein Teilgetriebe eintreibt, an dem die Gangstufen
Stand der TechnikState of the art
Doppelkupplungsgetriebe sind als Stufengetriebe für die Anwendung in Kraftfahrzeugen allgemein bekannt. Der Aufbau eines Doppelkupplungsgetriebes umfasst zwei unabhängig voneinander ansteuerbare Reibkupplungen, die Antriebsleistung auf je eines der beiden Teilgetriebe übertragen. Einem Teilgetriebe sind je eine Eingangswelle und darauf angeordnete Festräder zugeordnet, die wiederum in Zahneingriff mit Losrädern stehen und Radpaarungen ausbilden. In dem gerade aktiven Teilgetriebe ist eine Eingangswelle mit einer Reibkupplung und zudem eine einer Vorwärtsfahrstufe zugeordnete Radpaarung und deren Losrad mit einer Abtriebswelle wirkverbunden, sodass die Antriebsleistung von dem Verbrennungsmotor über das aktive Teilgetriebe hin zu dem Abtrieb und den Rädern übertragen werden kann. Das passive Teilgetriebe und dessen Eingangswelle sind in diesem Fall nicht mit der zugeordneten Reibkupplung verbunden.Double clutch transmissions are generally known as multi-step transmissions for use in motor vehicles. The structure of a dual clutch transmission includes two independently controllable friction clutches, which each transmit drive power to one of the two sub-transmissions. An input shaft and fixed gears arranged on it are assigned to each sub-transmission, which in turn mesh with idler gears and form gear pairs. In the currently active sub-transmission, an input shaft with a friction clutch and also a wheel pairing assigned to a forward gear and its idler gear are operatively connected to an output shaft so that the drive power can be transmitted from the internal combustion engine via the active sub-transmission to the output and the wheels. In this case, the passive sub-transmission and its input shaft are not connected to the associated friction clutch.
So wird es ermöglicht, ein einer Vorwärtsfahrstufe zugeordnetes Losrad des passiven Teilgetriebes mit der Abtriebswelle zu verbinden. Ein zugkraftunterbrechungsfreier Gangwechsel erfolgt, in dem die Reibkupplung des derzeit aktiven Teilgetriebes öffnet und überlappend dazu die andere Reibkupplung des geraden passiven Teilgetriebes schließt. Optional bietet es sich an, das Doppelkupplungsgetriebe auf einfacher Art und Weise zu „hybridisieren“, in dem der Elektromotor vorzugsweise an ein Teilgetriebe angebunden ist.This makes it possible to connect an idler gear of the passive sub-gear assigned to a forward gear to the output shaft. A gear change without interruption of tractive force takes place in which the friction clutch of the currently active sub-transmission opens and the other friction clutch of the straight passive sub-transmission closes with an overlap. Optionally, it is possible to “hybridize” the dual clutch transmission in a simple manner, in which the electric motor is preferably connected to a sub-transmission.
Aus der
Ausgehend von einer solchen Anordnung, wie im Stand der Technik beschrieben, besteht der Wunsch, die elektrische Maschine zwischen zwei Gangstufen zu schalten.Based on such an arrangement, as described in the prior art, there is a desire to switch the electric machine between two gear stages.
Diese Schaltung soll dabei im rein elektrischen Antrieb zugunterbrechungsfrei sein.This circuit should be train-free in the purely electric drive.
Es ist Aufgabe der Erfindung ein Verfahren zum Schalten eines Doppelkupplungsgetriebes mit einer angebundenen elektrischen Maschine vorzuschlagen, das ein Schalten zwischen zwei Gangstufen für die elektrische Maschine ohne Unterbrechung des Zugs ermöglicht.It is the object of the invention to propose a method for shifting a dual clutch transmission with a connected electrical machine, which enables switching between two gear steps for the electrical machine without interrupting the train.
Beschreibung der ErfindungDescription of the invention
Die Aufgabe wird gelöst mit einem Verfahren zum Schalten eines Getriebes in einem Antriebsstrang mit einem Verbrennungsmotor und einer elektrischen Maschine mit einem Doppelkupplungsgetriebe mit einem ersten und zweiten Teilgetriebe und den Teilgetrieben jeweils zugeordneten Kupplungen, wobei die elektrische Maschine in ein Teilgetriebe eintreibt, an dem die Gangstufen
Die Verwendung der Schwungmasse des Verbrennungsmotors erlaubt es das Teilgetriebe, an das die elektrische Maschine angebunden ist, zu entlasten, ohne Antriebsleistung zu verlieren und ohne den Verbrennungsmotor zu starten. The use of the flywheel mass of the internal combustion engine allows the partial transmission to which the electrical machine is connected to be relieved without losing drive power and without starting the internal combustion engine.
Vorteilhafterweise wird zum Schalten zwischen Gangstufe
Das erfindungsgemäße Verfahren erlaubt, dass die elektrische Maschine in einem Zwischenzustand zum Antrieb des Fahrzeugs und des Verbrennungsmotors dient.The method according to the invention allows the electrical machine to be used in an intermediate state to drive the vehicle and the internal combustion engine.
Das Verfahren zeichnet sich durch folgende Schritte aus:
- • Fahren mit der elektrischen Maschine mit
Gangstufe 2 im zweiten Teilgetriebe, - • Vorauswahl der
Gangstufe 3 im ersten Teilgetriebe, - • Schließen der Kupplung
K1 , - • Betreiben der Kupplung
K2 im Schlupfbetrieb, - • Auslegen der
Gangstufe 2 , - • Reduzierung der Drehzahl der elektrischen Maschine,
- • Schließen der Kupplung
K2 , - • Stellen der Kupplung
K1 in den Schlupfbetrieb bei steigender Drehzahl der elektrischen Maschine, - • Öffnen der Kupplung
K2 , - • Einlegen der
Gangstufe 4 und Öffnen der KupplungK1 .
- • Driving with the electric machine in
gear 2 in the second partial transmission, - • Preselection of
gear 3 in the first partial transmission, - • Closing the clutch
K1 , - • Operating the clutch
K2 in slip mode, - • Selecting the
gear step 2 , - • Reducing the speed of the electrical machine,
- • Closing the clutch
K2 , - • Setting the clutch
K1 into slip mode when the speed of the electrical machine increases, - • Opening the clutch
K2 , - • Engaging the gear
4th and opening the clutchK1 .
FigurenlisteFigure list
Die Erfindung wird nachfolgend beispielhaft unter Bezugnahme auf die beigefügten Zeichnungen beschrieben.
-
1 bis9 zeigen in schematischer Darstellung den Verlauf der Antriebsenergie während des Verfahrens.
-
1 to9 show in a schematic representation the course of the drive energy during the process.
In
Das erfindungsgemäße Verfahren beginnt mit einer Fahrsituation, in der der Verbrennungsmotor
Beide Kupplungen
Wenn es dem Fahrerwunsch entspricht, bzw. wenn die automatische Steuerung ein solches Verfahren vorsieht, soll die elektrische Maschine mit einer höheren Gangstufe betrieben werden.If it corresponds to the driver's request, or if the automatic control provides such a method, the electric machine should be operated at a higher gear.
Da die elektrische Maschine nur am Teilgetriebe
Das erfindungsgemäße Verfahren sieht vor, dass als erster Schritt des Verfahrens im ersten Teilgetriebe
Im nächsten Verfahrensschritt wird die Kupplung
Anschließend wird die Kupplung
Die Energie, die über die elektrische Maschine
Im nächsten Schritt, siehe
Im nächsten Verfahrensschritt wird bei gleichbleibender Stellung aller Bauteile die Drehzahl der elektrischen Maschine reduziert siehe
Anschließend wird die Kupplung
Als nächstes wird die Kupplung
Die Antriebsenergie verläuft dabei entlang der Kupplung
Das Teilgetriebe
Anschließend wird die Kupplung
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Citations (1)
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DE102016007408A1 (en) * | 2016-06-20 | 2017-12-21 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Double clutch |
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DE102016007408A1 (en) * | 2016-06-20 | 2017-12-21 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Double clutch |
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