DE102008060351A1 - Hybrid vehicle has internal combustion engine, electric machine, gear mechanism and gear input, where valve is arranged in oil inlet, which is controlled or regulated by controller or regulator - Google Patents

Hybrid vehicle has internal combustion engine, electric machine, gear mechanism and gear input, where valve is arranged in oil inlet, which is controlled or regulated by controller or regulator Download PDF

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Publication number
DE102008060351A1
DE102008060351A1 DE102008060351A DE102008060351A DE102008060351A1 DE 102008060351 A1 DE102008060351 A1 DE 102008060351A1 DE 102008060351 A DE102008060351 A DE 102008060351A DE 102008060351 A DE102008060351 A DE 102008060351A DE 102008060351 A1 DE102008060351 A1 DE 102008060351A1
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Prior art keywords
oil
separating clutch
clutch
hybrid vehicle
combustion engine
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DE102008060351A
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German (de)
Inventor
Roland Gollmer
Christian Stempel
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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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
    • 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
    • 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
    • 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
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/50—Drive Train control parameters related to clutches
    • B60L2240/507—Operating parameters
    • 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
    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0019—Control system elements or transfer functions
    • B60W2050/0028—Mathematical models, e.g. for simulation
    • B60W2050/0031—Mathematical model of the vehicle
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/02—Clutches
    • B60W2510/0291—Clutch temperature
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/083—Torque
    • 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
    • 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
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

The hybrid vehicle has an internal combustion engine (1), an electric machine (9), a gear mechanism (10) and a gear input. A controller or a regulator is provided which controls and regulates an oil volume stream to a separation clutch (5) for cooling the separation clutch. A valve (14) is arranged in an oil inlet, which is controlled or regulated by the controller or the regulator.

Description

Die vorliegende Erfindung betrifft ein Hybridfahrzeug gemäß dem Oberbegriff des Patentanspruches 1.The The present invention relates to a hybrid vehicle according to the preamble of claim 1.

Der Antriebsstrang von Parallelhybridfahrzeugen, die als „Vollhybride” bezeichnet werden können, d. h. bei denen wahlweise ein rein verbrennungsmotorischer Antrieb, ein rein elektromotorischer Antrieb sowie in Kombination ein verbrennungsmotorischer Antrieb unterstützt durch elektromotorischen Antrieb möglich ist, ist üblicherweise folgendermaßen aufgebaut. Die Kurbelwelle des Verbrennungsmotors ist drehfest mit einer Primärseite einer Trennkupplung verbunden, wobei zwischen der Primärseite der Trennkupplung und der Kurbelwelle zusätzlich ein Drehschwingungsdämpfer bzw. ein Zweimassenschwungrad angeordnet sein kann. Zwischen der Sekundärseite der Trennkupplung und dem Getriebeeingang ist eine elektrische Maschine angeordnet, die bei abgekoppeltem Verbrennungsmotor rein elektrisches Fahren ermöglicht bzw. die eine Drehmomentunterstützung des Verbrennungsmotors bzw. in Schubphasen des Fahrzeugs eine Rekuperation kinetischer Energie ermöglicht.Of the Powertrain of parallel hybrid vehicles referred to as "full hybrids" can be d. H. in which optionally a purely internal combustion engine drive, a purely electric motor drive and in combination an internal combustion engine Drive supported by electric motor drive is possible, is common as follows built up. The crankshaft of the engine is rotatably with a primary page one Coupling connected, wherein between the primary side of the separating clutch and the crankshaft in addition a torsional vibration damper or a dual-mass flywheel may be arranged. Between the secondary side the disconnect clutch and the transmission input is an electric machine arranged the with disconnected combustion engine purely electric driving allows or the one torque assistance of the internal combustion engine or in coasting phases of the vehicle a recuperation Kinetic energy allows.

Als Trennkupplungen werden hierfür üblicherweise nasslaufende Kupplungen verwendet, die an den Schmierölkreislauf des Getriebes angeschlossen sind. Bei nasslaufenden Kupplungen tritt in geöffnetem Zustand der Kupplung ein Schleppmoment an der Kupplung auf, das von der Temperatur des Kupplungsöls, welches zur Kühlung der Kupplung verwendet wird, abhängt. Bei kaltem Kupplungsöl ist das Schleppmoment und somit die an der Kupplung auftretende Verlustleistung deutlich höher als bei betriebswarmem Kupplungsöl. Wird die Kupplung bei einem Vollhybridsystem als „Motortrennkupplung” eingesetzt, so entsteht bei rein elektrischem Fahrbetrieb, d. h. wenn der Verbrennungsmotor durch Öffnen der Kupplung abgekoppelt ist, aufgrund der sich an der Kupplung einstellenden Differenzdrehzahl eine Verlustleistung, die sich ungünstig auf den Gesamtenergieverbrauch des Fahrzeugs auswirkt. Um Schleppmomentverluste möglichst gering zu halten sollte die Trennkupplung bzw. das darin befindliche Öl möglichst schnell auf „Normalbetriebstemperatur” gebracht werden.When Disconnect couplings are customary for this purpose wet-running clutches used to lubricating the oil circuit of the transmission are connected. In wet-running clutches occurs in open Condition of the clutch on a drag torque on the clutch, the from the temperature of the clutch oil, which for cooling the clutch is used depends. For cold clutch oil is the drag torque and thus occurring at the clutch Power dissipation significantly higher as with warm clutch oil. If the clutch is used as a "motor disconnect clutch" in a full hybrid system, so arises in purely electric driving, d. H. when the internal combustion engine by opening The clutch is decoupled due to the clutch adjusting differential speed loss of power, which is unfavorable affects the total energy consumption of the vehicle. To drag torque losses preferably The separating clutch or the oil contained therein should be kept as low as possible quickly brought to "normal operating temperature" become.

Ausgangspunkt der Erfindung ist es, ein Hybridfahrzeug zu schaffen, bei dem die in der Trennkupplung zwischen dem Verbrennungsmotor und dem Getriebe entstehende Verlustleistung möglichst gering ist.starting point The invention is to provide a hybrid vehicle in which the in the clutch between the engine and the transmission resulting power loss as low as possible is.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.These The object is solved by the features of claim 1. advantageous Refinements and developments of the invention are the dependent claims remove.

Ausgangspunkt der Erfindung ist ein Hybridfahrzeug, mit einem Verbrennungsmotor, der über eine Trennkupplung mit dem Getriebeeingang eines Getriebes verbunden ist. Zwischen der Sekundärseite der Trennkupplung und dem Getriebeeingang ist eine elektrische Maschine angeordnet, durch die das Getriebe alternativ oder unterstützend zum Verbrennungsmotor angetrieben werden kann. Die Trennkupplung wird über einen „Ölzulauf” mit Öl aus dem Getriebe versorgt und gekühlt. Der Rückfluss heißen Öls in das Getriebe kann beispielsweise über die Getriebeeingangswelle erfolgen.starting point the invention is a hybrid vehicle with an internal combustion engine, the one about Disconnect coupling connected to the transmission input of a transmission is. Between the secondary side the disconnect clutch and the transmission input is an electrical machine arranged through which the transmission is alternative or supportive to the Internal combustion engine can be driven. The disconnect clutch is via an "oil inlet" with oil from the transmission supplied and cooled. The reflux hot oil in the Transmission can, for example, over the transmission input shaft done.

Der Kern der Erfindung besteht in einer Steuerung bzw. Regelung des vom Getriebe zur Trennkupplung strömenden Ölvolumenstroms. Ganz allgemein besteht das Grundprinzip der Erfindung darin, den zur Trennkupplung strömenden Ölvolumenstrom in Abhängigkeit des momentanen Kühlleistungsbedarfs der Trennkupplung zu steuern bzw. zu regeln. Um Schleppverluste während der Warmlaufphase der Trennkupplung möglichst gering zu halten sollte die Trennkupplung bzw. das darin befindliche bzw. das die Trennkupplung durchströmende, vom Getriebe kommende Öl möglichst schnell „Normalbetriebstemperatur” erreichen. Konkret geht es somit um eine schnelle „lokale” Aufheizung des Öls in der Trennkupplung.Of the Essence of the invention consists in a control or regulation of the from the gearbox to the separating clutch flowing oil volume flow. Generally consists of the basic principle of the invention is that for the separation clutch flowing oil flow in dependence the current cooling capacity requirement to control or regulate the separating clutch. To drag losses during the Warm-up phase of the separating clutch should be kept as low as possible Disconnect or the therein or the disconnect clutch flowing, oil coming from the gearbox preferably quickly reach "normal operating temperature". Specifically, it is about a quick "local" heating of the oil in the Separating clutch.

Hierzu kann in dem „Ölzulauf”, d. h. in der Fluidverbindung zwischen dem Getriebe und der Trennkupplung ein Ventil angeordnet sein, das durch die Steuerung bzw. Regelung gesteuert bzw. geregelt wird.For this can in the "oil feed", d. H. in the fluid connection between the transmission and the disconnect clutch a valve may be arranged by the controller is controlled or regulated.

In Betriebszuständen, in denen

  • a) die Trennkupplung geöffnet ist und der Getriebeeingang von der elektrischen Maschine angetrieben wird und
  • b) die Öltemperatur in der Trennkupplung unterhalb eines vorgegebenen Normaltemperaturbereichs liegt, kann vorgesehen sein, dass die Ölzufuhr zur Trennkupplung durch entsprechende Ansteuerung bzw. Regelung des Ventils gedrosselt bzw. völlig abgeschaltet wird.
In operating conditions in which
  • a) the disconnect clutch is open and the transmission input is driven by the electric machine and
  • b) the oil temperature in the clutch is below a predetermined normal temperature range, it can be provided that the oil supply to the clutch is throttled by appropriate control or regulation of the valve or completely switched off.

Im Vergleich zu herkömmlichen Hybridkonzepten, bei denen der Kühlölvolumenstrom zwischen dem Getriebe und der Trennkupplung nicht separat steuerbar bzw. regelbar ist, lässt sich mit der Erfindung die Aufheizung der Trennkupplung bzw. des darin befindlichen „Kühlöls” beschleunigen. Wie bereits erwähnt ergeben sich dadurch energetische Vorteile, da die Schleppverluste in der Trennkupplung umso geringer sind, je schneller das Öl in der Trennkupplung seine Normalbetriebstemperatur erreicht.in the Compared to conventional Hybrid concepts in which the cooling oil volume flow not separately controllable between the gearbox and the separating clutch or is controllable leaves with the invention, the heating of the clutch or the Accelerate therein "cooling oil". As already mentioned This results in energy advantages, since the drag losses in the separating clutch, the lower the faster the oil in the Disconnect clutch reaches its normal operating temperature.

Für die Steuerung bzw. Regelung des zur Trennkupplung strömenden Ölvolumenstroms kann in der Steuerung bzw. Regelung, insbesondere in der Getriebesteuerung ein thermodynamisches Modell implementiert sein, mittels dem zumindest näherungsweise die Temperatur der Trennkupplung bzw. des darin befindlichen Öls ermittelt bzw. abgeschätzt werden kann. Das zugrunde gelegte thermodynamische Modell kann eine Vielzahl von Eingangsparameter aufweisen, wie z. B.

  • – die Öltemperatur im Getriebesumpf;
  • – die Verlustleistung in der Trennkupplung, die sich errechnet aus der Differenzdrehzahl zwischen der Primärseite und der Sekundärseite, multipliziert mit dem Schleppmoment, etc.
For the control or regulation of the oil flow flowing to the separating clutch can in the control or regulation, in particular in the Transmission control a thermodynamic model be implemented by means of which at least approximately the temperature of the separating clutch and the oil therein can be determined or estimated. The underlying thermodynamic model may have a variety of input parameters, such. B.
  • - the oil temperature in the transmission sump;
  • - The power loss in the separating clutch, which is calculated from the differential speed between the primary side and the secondary side, multiplied by the drag torque, etc.

Sobald ermittelt wurde, dass die Öltemperatur in der Trennkupplung eine Normaltemperaturbereich erreicht hat, kann das Ventil in der Fluidverbindung zwischen dem Getriebe und der Trennkupplung vollständig geöffnet werden, so dass der Kühlölvolumenstrom seinen Maximalwert erreicht. Alternativ oder ergänzend dazu kann die „Rückkehr” zum Maximalkühlölvolumenstrom” z. B. auch über eine Zeitfunktion erfolgen.As soon as it was determined that the oil temperature in the separating clutch has reached a normal temperature range, the valve can be in fluid communication between the transmission and the separating clutch completely open so that the cooling oil volume flow reached its maximum value. Alternatively or additionally, the "return" to the maximum cooling oil volume flow "z. B. also over a time function.

Im Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Die einzige 1 beschreibt das Grundprinzip der Erfindung in schematischer Darstellung.In the following the invention will be explained in connection with the drawing. The only 1 describes the basic principle of the invention in a schematic representation.

1 zeigt in schematischer Darstellung das Antriebskonzept eines als Vollhybrid betreibbaren Parallelhybridfahrzeugs gemäß der Erfindung. Das Fahrzeug weist einen Verbrennungsmotor 1 auf, dessen Kurbelwelle 2 über einen Drehschwingungsdämpfer 3 mit einer Primärseite 4 einer Motortrennkupplung, die im Folgenden kurz als „Kupplung 5” bezeichnet wird, verbunden ist. Eine Sekundärseite 6 der Kupplung 5 ist mit einer Getriebeeingangswelle 7 verbunden. Drehfest mit der Sekundärseite 6 der Getriebeeingangswelle 7 ist ein Rotor einer elektrischen Maschine 9 verbunden. 1 shows a schematic representation of the drive concept of a parallel hybrid hybrid vehicle which can be operated as a full hybrid according to the invention. The vehicle has an internal combustion engine 1 on, its crankshaft 2 via a torsional vibration damper 3 with a primary page 4 an engine disconnect clutch, hereinafter referred to as "clutch 5 ' is called connected. A secondary side 6 the clutch 5 is with a transmission input shaft 7 connected. Tight against the secondary side 6 the transmission input shaft 7 is a rotor of an electric machine 9 connected.

Anders als in 1 dargestellt, kann die Trennkupplung 5 in eine hier nicht näher dargestellte Kupplungsglocke eines Getriebes 10 integriert sein. Das Getriebe 10, bei dem es sich um ein Automatikgetriebe handeln kann, wird durch eine Getriebesteuerung 11 angesteuert.Unlike in 1 shown, the separating clutch 5 in a not shown here clutch bell of a transmission 10 be integrated. The gear 10 , which may be an automatic transmission, is controlled by a transmission control 11 driven.

Ferner ist eine Ölpumpe 12 vorgesehen, die sowohl diverse Schmierstellen im Inneren des Getriebes 10 mit Schmieröl aus dem Ölsumpf des Getriebes 10 versorgt als auch die Trennkupplung 5. Hierzu ist die Ölpumpe 12 über eine Fluidleitung 13 mit der Trennkupplung 5 verbunden. In der Fluidleitung 13 ist ein Ventil 14 angeordnet, das durch die Getriebesteuerelektronik 11 angesteuert wird. Über das Ventil 14 kann der vom Getriebe 10 zur Trennkupplung 5 strömende Ölvolumenstrom gesteuert bzw. geregelt werden.Further, an oil pump 12 provided that both various lubrication points inside the gearbox 10 with lubricating oil from the oil sump of the gearbox 10 supplied as well as the separating clutch 5 , This is the oil pump 12 via a fluid line 13 with the separating clutch 5 connected. In the fluid line 13 is a valve 14 arranged by the transmission control electronics 11 is controlled. About the valve 14 Can the gearbox 10 to the disconnect clutch 5 flowing oil flow can be controlled or regulated.

In Betriebszuständen, in denen das Hybridfahrzeug rein elektrisch, d. h. ausschließlich über die elektrische Maschine 9 angetrieben wird, ist die Trennkupplung 5 geöffnet und der Verbrennungsmotor 1 abgekoppelt. Um die zwischen der Primärseite 4 und der Sekundärseite 6 der Trennkupplung 5 auftretende Schleppverlustleistung möglichst gering zu halten, sollte das in der Trennkupplung 5 befindliche Öl möglichst Normalbetriebstemperatur haben bzw. möglichst schnell einen Normalbetriebstemperaturbereich erreichen.In operating conditions in which the hybrid vehicle is purely electric, ie only via the electric machine 9 is driven, is the separating clutch 5 opened and the internal combustion engine 1 decoupled. To the between the primary side 4 and the secondary side 6 the separating clutch 5 should minimize drag loss performance occurring, should that in the separating clutch 5 oil as possible have normal operating temperature or reach a normal operating temperature range as quickly as possible.

Ist das Öl in der Trennkupplung 5 relativ kalt, d. h. liegt die Öltemperatur unterhalb des Normalbetriebstemperaturbereichs, so ist vorgesehen, dass die Steuerelektronik 11 das Ventil 14 so ansteuert, dass der vom Getriebe 10 zur Trennkupplung 5 strömende Ölvolumenstrom abgesperrt, zumindest aber gedrosselt wird. Dies hat den Vorteil, dass sich das Öl in der Trennkupplung 5 vergleichsweise schnell aufheizen kann und somit der Zeitanteile, in dem das Kupplungsöl relativ kalt ist und entsprechend hohe Schleppverlustleistungen auftreten, minimiert wird.Is the oil in the separating clutch 5 relatively cold, that is, the oil temperature is below the normal operating temperature range, it is envisaged that the control electronics 11 the valve 14 so controls that of the transmission 10 to the disconnect clutch 5 flowing oil flow blocked off, but at least throttled. This has the advantage that the oil in the separating clutch 5 can heat up comparatively quickly and thus the time proportions in which the clutch oil is relatively cold and correspondingly high tow power losses occur is minimized.

Sofern die Temperatur des Öls in der Trennkupplung 5 nicht gemessen wird, kann die Öltemperatur näherungsweise mittels eines thermodynamischen Modells errechnet werden.Unless the temperature of the oil in the disconnect clutch 5 is not measured, the oil temperature can be approximately calculated by means of a thermodynamic model.

Claims (4)

Hybridfahrzeug, mit – einem Verbrennungsmotor (1), – einer elektrischen Maschine (9), – einem Getriebe (10), das einen Getriebeeingang (7) aufweist, und – einer Trennkupplung (5), über die der Verbrennungsmotor (1) mit dem Getriebeeingang (7) koppelbar ist, wobei die Trennkupplung (5) über einen Ölzulauf (13) mit Öl aus dem Getriebe (10) versorgt und dadurch gekühlt wird, dadurch gekennzeichnet, dass eine Steuerung bzw. eine Regelung (11) vorgesehen ist, welche den zur Trennkupplung (5) strömenden Ölvolumenstrom in Abhängigkeit vom Kühlbedarf der Trennkupplung (5) steuert bzw. regelt.Hybrid vehicle, with - an internal combustion engine ( 1 ), - an electric machine ( 9 ), - a transmission ( 10 ), which has a transmission input ( 7 ), and - a separating clutch ( 5 ) about which the internal combustion engine ( 1 ) with the transmission input ( 7 ) is coupled, wherein the separating clutch ( 5 ) via an oil feed ( 13 ) with oil from the transmission ( 10 ) and thereby cooled, characterized in that a control or a regulation ( 11 ) is provided, which to the separating clutch ( 5 ) flowing oil volume flow depending on the cooling requirement of the separating clutch ( 5 ) controls. Hybridfahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass in dem Ölzulauf (13) ein Ventil (14) angeordnet ist, das durch die Steuerung bzw. Regelung (11) gesteuert bzw. geregelt wird.Hybrid vehicle according to claim 1, characterized in that in the oil feed ( 13 ) a valve ( 14 ) arranged by the controller ( 11 ) is controlled or regulated. Hybridfahrzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Steuerung bzw. Regelung (11) in Betriebszuständen, in denen – die Trennkupplung (5) geöffnet ist und der Getriebeeingang (7) von der elektrischen Maschine (9) angetrieben wird und – die Öltemperatur in der Trennkupplung (5) unterhalb eines Normalbetriebstemperaturbereichs liegt, die Ölzufuhr zur Trennkupplung (5) durch entsprechende Steuerung bzw. Regelung des Ventils (14) drosselt bzw. abschaltet, um ein zügiges Aufheizen des Öls in der Trennkupplung (5) auf eine Temperatur innerhalb eines Normalbetriebstemperaturbereichs zu erreichen.Hybrid vehicle according to one of claims 1 or 2, characterized in that the control or regulation ( 11 ) in operating states in which - the separating clutch ( 5 ) is open and the transmission input ( 7 ) of the electric machine ( 9 ) and - the oil temperature in the separating clutch ( 5 ) is below a normal operating temperature range, the oil supply to the separating clutch ( 5 ) by appropriate control or regulation of the valve ( 14 ) throttles or shuts off in order to ensure rapid heating of the oil in the separating clutch ( 5 ) to reach a temperature within a normal operating temperature range. Hybridfahrzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in der Steuerung bzw. Regelung (11) ein thermodynamisches Modell implementiert ist, mittels dem die Steuerung bzw. Regelung (11) zumindest näherungsweise die Temperatur des Öls in der Trennkupplung (5) ermittelt.Hybrid vehicle according to one of claims 1 to 3, characterized in that in the control or regulation ( 11 ) a thermodynamic model is implemented, by means of which the control or regulation ( 11 ) at least approximately the temperature of the oil in the separating clutch ( 5 ).
DE102008060351A 2008-12-03 2008-12-03 Hybrid vehicle has internal combustion engine, electric machine, gear mechanism and gear input, where valve is arranged in oil inlet, which is controlled or regulated by controller or regulator Withdrawn DE102008060351A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011015376A1 (en) * 2011-03-29 2012-10-04 Daimler Ag Hybrid motor vehicle device
DE102011120809A1 (en) 2011-12-10 2013-06-13 Volkswagen Aktiengesellschaft Multi-clutch system for e.g. motor car, has oil guide path branching from another oil guide path and extending in radial direction and axial direction, where latter oil guide path extends in radial direction
DE102013021343B4 (en) * 2013-12-14 2018-05-24 Daimler Ag Automotive power train assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601708A1 (en) * 1986-01-22 1987-07-23 Sachs Systemtechnik Gmbh ARRANGEMENT FOR MONITORING A FRICTION COUPLING, IN PARTICULAR A MOTOR VEHICLE
DE4338785A1 (en) * 1992-11-13 1994-05-19 Borg Warner Automotive Cooling system for the starting clutch of a continuously variable transmission
DE10049793A1 (en) * 1999-10-08 2001-07-05 Toyota Motor Co Ltd Oil pressure control device for automatic transmission has cut-back valve that enables pressure emission accompanied by control when setting up speed change condition
DE102005051382A1 (en) * 2005-10-27 2007-05-10 Zf Friedrichshafen Ag Hybrid drive and method for its operation
US20070202989A1 (en) * 2006-02-27 2007-08-30 Ford Global Technologies, Llc Control method for cooling a launch clutch and an electric motor in a hybrid electric vehicle powertrain

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601708A1 (en) * 1986-01-22 1987-07-23 Sachs Systemtechnik Gmbh ARRANGEMENT FOR MONITORING A FRICTION COUPLING, IN PARTICULAR A MOTOR VEHICLE
DE4338785A1 (en) * 1992-11-13 1994-05-19 Borg Warner Automotive Cooling system for the starting clutch of a continuously variable transmission
DE10049793A1 (en) * 1999-10-08 2001-07-05 Toyota Motor Co Ltd Oil pressure control device for automatic transmission has cut-back valve that enables pressure emission accompanied by control when setting up speed change condition
DE102005051382A1 (en) * 2005-10-27 2007-05-10 Zf Friedrichshafen Ag Hybrid drive and method for its operation
US20070202989A1 (en) * 2006-02-27 2007-08-30 Ford Global Technologies, Llc Control method for cooling a launch clutch and an electric motor in a hybrid electric vehicle powertrain

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011015376A1 (en) * 2011-03-29 2012-10-04 Daimler Ag Hybrid motor vehicle device
DE102011120809A1 (en) 2011-12-10 2013-06-13 Volkswagen Aktiengesellschaft Multi-clutch system for e.g. motor car, has oil guide path branching from another oil guide path and extending in radial direction and axial direction, where latter oil guide path extends in radial direction
DE102013021343B4 (en) * 2013-12-14 2018-05-24 Daimler Ag Automotive power train assembly

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