EP3271201A1 - Method for operating a hybrid vehicle - Google Patents

Method for operating a hybrid vehicle

Info

Publication number
EP3271201A1
EP3271201A1 EP16702507.1A EP16702507A EP3271201A1 EP 3271201 A1 EP3271201 A1 EP 3271201A1 EP 16702507 A EP16702507 A EP 16702507A EP 3271201 A1 EP3271201 A1 EP 3271201A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
hybrid vehicle
electric machine
starting
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Withdrawn
Application number
EP16702507.1A
Other languages
German (de)
French (fr)
Inventor
Christian Landerl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3271201A1 publication Critical patent/EP3271201A1/en
Withdrawn legal-status Critical Current

Links

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
    • B60K6/38—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
    • 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
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • 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
    • 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
    • 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18027—Drive off, accelerating from standstill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • 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
    • B60K2006/4808—Electric machine connected or connectable to gearbox output shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N5/00—Starting apparatus having mechanical power storage
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/93—Conjoint control of different elements

Definitions

  • the invention relates to a method for operating a hybrid vehicle having the features of the preamble of patent claim 1.
  • a powertrain especially for motor vehicles known, comprising a drive unit, such.
  • a drive unit As an internal combustion engine, with a drive shaft, as well as with at least one, with the drive shaft operatively connected electric machine, which is used at least as a motor and generator.
  • the drive train is characterized in that the operative connection between the electric machine and the drive shaft at least two, of one at least in the start and operating phase
  • a disadvantage of this known state of the art are after electrical starting of the motor vehicle and connecting the internal combustion engine whose high speeds with optionally rated power immediately after Cold start, causing a significant wear of the tribological components of the internal combustion engine.
  • the hybrid vehicle comprises an electric motor for driving and an internal combustion engine with generator, which is intended to generate electricity and with an accumulator, wherein the internal combustion engine is towed unfurled by the generator in a warm-up phase and by one in a
  • heated gases are supplied to the combustion chambers of the internal combustion engine.
  • a disadvantage of this prior art is the use of the generator for towing the internal combustion engine, which does not have enough power to generate higher speeds of the internal combustion engine.
  • Object of the present invention is to show a measure with which a gentle and low-wear cold start of
  • Plug-in hybrid electric vehicles combine the advantages of battery-powered vehicles and conventionally powered vehicles: on shorter distances and in city traffic, the vehicle drives with the
  • the oil lines are filled with oil in an advantageous manner and wets all tribological components of the engine with oil.
  • oil pressure is present and at or in the lubrication points is already sufficient oil for lubrication available.
  • the internal friction of the internal combustion engine is thus minimized from the start of the internal combustion engine and increased wear of the tribological components is counteracted.
  • the respective operation is carried out according to the requested power to the hybrid vehicle by the driver.
  • the invention relates to a method for operating a hybrid vehicle, in particular a PHEV vehicle (plug-in hybrid electric vehicle, definition already mentioned above). It is in particular a method for operating the hybrid vehicle after a standstill of at least several minutes.
  • the hybrid vehicle includes at least an electric machine and an internal combustion engine with a
  • Internal combustion engine are independently operable, wherein the output shaft of the electric machine and the output shaft of the
  • Verbrennu ngsmotors via a clutch and / or a transmission for a separate or common drive of the hybrid vehicle can be brought into operative connection with each other.
  • the method for operating the hybrid vehicle after the steady state sand comprises the following method steps:
  • the periodic connection of the output shafts during the purely electric drive is further proposed and the towing of the internal combustion engine in a time range of 0.5 to 10 [ s] until a defined oil pressure in the oil circulation lubrication is established.
  • the towing operations can, as just executed, in a time range of several tenths of a second and several seconds.
  • a drag torque compensation can be performed so that the driver of the hybrid vehicle does not perceive the tow periods and the ride comfort would be impaired.

Abstract

Method for operating a hybrid vehicle after a stationary state of the hybrid vehicle with an electric machine and an internal combustion engine with a circulating oil lubrication system, wherein the electric machine and the internal combustion engine can be operated independently of one another and their output shafts can be operatively connected to one another via a clutch and/or a transmission for a separate or common drive, comprising the following method steps: • Starting the electric machine and starting the hybrid vehicle with pure electric drive, • Connecting the drive shafts during the electric drive and towing the internal combustion engine without inputting fuel until a defined oil pressure is built up in the circulating oil lubrication system, • Uncoupling the output shafts, • Continuing to operate the hybrid vehicle with pure electric drive until the internal combustion engine is started. By means of the method according to the invention, all the components of the internal combustion engine are wetted with oil at the start and the service life of the internal combustion engine is significantly increased.

Description

Verfahren zum Betrieb eines Hybrid-Fahrzeuges  Method for operating a hybrid vehicle
Beschreibung description
Die Erfindung betrifft ein Verfahren zum Betrieb eines Hybrid-Fahrzeuges mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1. The invention relates to a method for operating a hybrid vehicle having the features of the preamble of patent claim 1.
Zum technischen Umfeld wird beispielsweise auf die deutsche For technical environment is for example on the German
Offenlegungsschrift DE 199 41 705 A1 hingewiesen. Aus dieser ist ein Antriebsstrang, insbesondere für Kraftfahrzeuge bekannt, umfassend eine Antriebseinheit, wie z. B. eine Brennkraftmaschine, mit einer Antriebswelle, sowie mit zumindest einer, mit der Antriebswelle in Wirkverbindung stehenden elektrischen Maschine, die zumindest als Motor und Generator eingesetzt wird. Der Antriebsstrang ist dadurch gekennzeichnet, dass die Wirkverbindung zwischen der elektrischen Maschine und der Antriebswelle zumindest zwei, von einem zumindest in Start- und Betriebsphase Published Patent Application DE 199 41 705 A1. From this is a powertrain, especially for motor vehicles known, comprising a drive unit, such. As an internal combustion engine, with a drive shaft, as well as with at least one, with the drive shaft operatively connected electric machine, which is used at least as a motor and generator. The drive train is characterized in that the operative connection between the electric machine and the drive shaft at least two, of one at least in the start and operating phase
untergliederten Betriebsmodus der elektrischen Maschine abhängige, sich selbsttätig einstellende Übersetzungsstufen aufweist. Having subordinate operating mode of the electric machine dependent, automatically adjusting ratio stages.
Nachteilig an diesem bekannten Stand der Technik sind nach elektrischem Anfahren des Kraftfahrzeuges und Zuschalten der Brennkraftmaschine deren hohe Drehzahlen mit gegebenenfalls Nennleistung unmittelbar nach dem Kaltstart, was einen deutlichen Verschleiß der tribologischen Bauelemente der Brennkraftmaschine verursacht. A disadvantage of this known state of the art are after electrical starting of the motor vehicle and connecting the internal combustion engine whose high speeds with optionally rated power immediately after Cold start, causing a significant wear of the tribological components of the internal combustion engine.
Weiter ist aus der deutschen Patentschrift DE 195 48 120 C1 eine Next is from the German patent DE 195 48 120 C1 a
Motorvorwärmung für ein Hybrid-Fahrzeug bekannt. Das Hybrid-Fahrzeug weist einen Elektromotor für den Fahrbetrieb und einen Verbrennungsmotor mit Generator auf, der zum Strom erzeugen vorgesehen ist und mit einem Akkumulator, wobei der Verbrennungsmotor in einer Warmlaufphase unbefeuert vom Generator geschleppt wird und die von einer in einem Engine preheating known for a hybrid vehicle. The hybrid vehicle comprises an electric motor for driving and an internal combustion engine with generator, which is intended to generate electricity and with an accumulator, wherein the internal combustion engine is towed unfurled by the generator in a warm-up phase and by one in a
Saugrohr des Verbrennungsmotors angeordneten Heizvorrichtung Suction tube of the internal combustion engine arranged heater
aufgeheizten Gase den Brennräumen des Verbrennungsmotors zugeführt werden. heated gases are supplied to the combustion chambers of the internal combustion engine.
Nachteilig an diesem Stand der Technik ist die Verwendung des Generators zum Schleppen des Verbrennungsmotors, der nicht genug Leistung aufweist, um höhere Drehzahlen des Verbrennungsmotors zu generieren. A disadvantage of this prior art is the use of the generator for towing the internal combustion engine, which does not have enough power to generate higher speeds of the internal combustion engine.
Aufgabe der vorliegenden Erfindung ist es, eine Maßnahme aufzuzeigen, mit der ein schonender und verschleißarmer Kaltstart von Object of the present invention is to show a measure with which a gentle and low-wear cold start of
Verbrennungsmotoren, insbesondere für PHEV-Fahrzeuge (Plug-in Hybrid Electric Vehicle) dargestellt werden kann. Internal combustion engines, in particular for PHEV vehicles (plug-in hybrid electric vehicle) can be represented.
Diese Aufgabe wird mit den Verfahrensmerkmalen aus dem This object is achieved with the method features of the
kennzeichnenden Teil des Patentanspruchs 1 gelöst. characterizing part of claim 1.
Plug-in-Hybrid-Electric-Fahrzeuge (PHEV-Fahrzeuge) verbinden die Vorteile von Batteriefahrzeugen und konventionell angetriebenen Fahrzeugen: Auf kürzeren Strecken und im Stadtverkehr fährt das Fahrzeug mit dem Plug-in hybrid electric vehicles (PHEV vehicles) combine the advantages of battery-powered vehicles and conventionally powered vehicles: on shorter distances and in city traffic, the vehicle drives with the
elektrischen Antrieb leise, lokal emissionsfrei und sparsam mit Strom aus einem Akkumulator, der auch über das Haushaltsstromnetz geladen werden kann, während durch den zweiten Antrieb (z. B. einem Benzin- oder auch Gasmotor) das Fahrzeug auch dann noch fährt, wenn der Akkumulator leer ist und so eine wesentlich höhere Reichweite möglich ist. electric drive quietly, locally emission-free and economical with power from an accumulator, which can be loaded also over the household power net, while by the second drive (eg a gasoline or also Gas engine), the vehicle still drives even when the battery is empty and so a much higher range is possible.
Durch die erfindungsgemäßen Verfahrensschritte: By the method steps according to the invention:
- Starten der elektrischen Maschine und Anfahren des Hybrid-Fahrzeuges mit rein elektrischem Antrieb,  Starting the electric machine and starting the hybrid vehicle with purely electric drive,
- Verbinden der Abtriebswellen während des elektrischen Antriebes und Schleppen des Verbrennungsmotors ohne Kraftstoffeinbringung, bis ein definierter Öldruck in der Ölumlaufschmierung aufgebaut ist,  Connecting the output shafts during the electric drive and dragging the internal combustion engine without fuel introduction until a defined oil pressure in the oil circulation lubrication is established,
- Abkoppeln der Abtriebswellen,  - decoupling the output shafts,
- Weiterfahren des Hybrid-Fahrzeuges mit rein elektrischem Antrieb, bis der Verbrennungsmotor gestartet wird, werden in vorteilhafter Weise die Ölleitungen mit Öl befüllt und alle tribologischen Bauteile des Verbrennungsmotors mit Öl benetzt. Somit ist beim Start des Verbrennungsmotors sofort Öldruck vorhanden und an bzw. in den Schmierstellen ist bereits ausreichend Öl für die Schmierung vorhanden. Die innere Reibung des Verbrennungsmotors ist somit ab dem Start des Verbrennungsmotors minimiert und einem erhöhten Verschleiß der tribologischen Bauteile ist entgegengewirkt.  - Continue driving the hybrid vehicle with purely electric drive until the engine is started, the oil lines are filled with oil in an advantageous manner and wets all tribological components of the engine with oil. Thus, at the start of the engine immediately oil pressure is present and at or in the lubrication points is already sufficient oil for lubrication available. The internal friction of the internal combustion engine is thus minimized from the start of the internal combustion engine and increased wear of the tribological components is counteracted.
Es erfolgt somit ein Durchdrehen des Verbrennungsmotors (ein Schleppen mit der elektrischen Maschine) ohne Einspritzen von Kraftstoff und ohne Zündung (damit nicht emissionsrelevant) nach dem elektrischen Anfahren des Hybrid-Fahrzeuges. There is thus a spinning of the internal combustion engine (a towing with the electric machine) without injecting fuel and without ignition (thus not relevant to emissions) after the electrical startup of the hybrid vehicle.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. Advantageous developments of the invention are described in the subclaims.
Um beim längeren Fahren des Hybrid-Fahrzeuges nach dem Anfahren mit rein elektrischem Antrieb gemäß Patentanspruch 2 den Öldruck im Verbrennungsmotor aufrecht zu erhalten, wird weiter ein periodisches Verbinden der Abtriebswellen während des elektrischen Antriebs To the longer driving of the hybrid vehicle after starting with purely electric drive according to claim 2, the oil pressure in Maintaining the internal combustion engine will continue periodically connecting the output shafts during the electric drive
vorgeschlagen und Schleppen des Verbrennungsmotors, bis ein definierter Öldruck in der Ölumlaufschmierung aufgebaut ist. proposed and drag the internal combustion engine until a defined oil pressure is built up in the oil circulation lubrication.
Das heißt, es erfolgt ein periodisches Schleppen des Verbrennungsmotors während dem elektrischen Fahren, um eine permanente, bzw. That is, there is a periodic towing the internal combustion engine during electric driving to a permanent, or
intermittierende Schmierung der tribologischen Bauteile zu gewährleisten. To ensure intermittent lubrication of the tribological components.
Nach einem Starten des Verbrennungsmotors wird gemäß Patentanspruch 3 das Weiterfahren des Hybrid-Fahrzeuges nur mit dem Verbrennungsmotor oder mit der elektrischen Maschine und dem Verbrennungsmotor After starting the internal combustion engine according to claim 3, the driving of the hybrid vehicle only with the internal combustion engine or with the electric machine and the internal combustion engine
vorgeschlagen. Der jeweilige Betrieb erfolgt entsprechend der angeforderten Leistung an das Hybrid-Fahrzeug durch den Fahrer. proposed. The respective operation is carried out according to the requested power to the hybrid vehicle by the driver.
Im Folgenden wird die Erfindung anhand eines Ausführungsbeispieles näher erläutert. In the following the invention will be explained in more detail with reference to an embodiment.
Die Erfindung betrifft ein Verfahren zum Betrieb eines Hybrid-Fahrzeuges, insbesondere eines PHEV-Fahrzeugs (Plug-in Hybrid Electric Vehicle, Definition oben bereits aufgeführt). Es handelt sich insbesondere um ein Verfahren zum Betrieb des Hybrid-Fahrzeuges nach einem Stillstand von zumindest mehreren Minuten. Das Hybrid-Fahrzeug weist zumindest eine elektrische Maschine und einen Verbrennungsmotor mit einer The invention relates to a method for operating a hybrid vehicle, in particular a PHEV vehicle (plug-in hybrid electric vehicle, definition already mentioned above). It is in particular a method for operating the hybrid vehicle after a standstill of at least several minutes. The hybrid vehicle includes at least an electric machine and an internal combustion engine with a
Ölumlaufschmierung auf. Die elektrische Maschine und der Oil circulation lubrication on. The electric machine and the
Verbrennungsmotor sind unabhängig voneinander betreibbar, wobei die Abtriebswelle der elektrischen Maschine und die Abtriebswelle des Internal combustion engine are independently operable, wherein the output shaft of the electric machine and the output shaft of the
Verbrennu ngsmotors über eine Kupplung und/oder ein Getriebe für einen getrennten oder gemeinsamen Antrieb des Hybrid-Fahrzeuges miteinander in Wirkverbindung bringbar sind. Das Verfahren zum Betrieb des Hybrid-Fahrzeuges nach dem Stillsand weist folgende Verfahrensschritte auf: Verbrennu ngsmotors via a clutch and / or a transmission for a separate or common drive of the hybrid vehicle can be brought into operative connection with each other. The method for operating the hybrid vehicle after the steady state sand comprises the following method steps:
- Starten der elektrischen Maschine und Anfahren des Hybrid-Fahrzeuges mit rein elektrischem Antrieb,  Starting the electric machine and starting the hybrid vehicle with purely electric drive,
- Verbinden der Abtriebswellen während des elektrischen Antriebes und Schleppen des Verbrennungsmotors auf einen Drehzahlbereich zwischen 100 und 1000 [1/min] ohne Kraftstoffeinbringung und ohne Zündung, bis ein definierter Öldruck in einem Druckbereich zwischen 1 und 5 [bar] in der Ölumlaufschmierung des Verbrennungsmotors aufgebaut ist,  - Connecting the output shafts during the electric drive and towing the internal combustion engine to a speed range between 100 and 1000 [1 / min] without fuel injection and without ignition until a defined oil pressure in a pressure range between 1 and 5 [bar] built in the oil circulation lubrication of the internal combustion engine is
- Abkoppeln der Antriebswellen,  - decoupling the drive shafts,
- Weiterfahren des Hybrid-Fahrzeuges mit rein elektrischem Antrieb, bis der Verbrennungsmotor gestartet wird.  - Continue the hybrid vehicle with purely electric drive until the engine is started.
Durch das erfindungsgemäße Verfahren zum Betrieb eines Hybrid- Fahrzeuges nach einem Stillstand wird ein Durchdrehen des By the inventive method for operating a hybrid vehicle after a standstill is a spin of the
Verbrennungsmotors ohne Einspritzung und Zündung (somit nicht Internal combustion engine without injection and ignition (thus not
emissionsrelevant), nach dem elektrischen Anfahren durchgeführt. Hierdurch werden in vorteilhafter Weise die Ölleitungen mit Öl befüllt und alle emission-relevant), carried out after the electric starting. As a result, the oil lines are filled with oil in an advantageous manner and all
tribologischen Bauteile des Verbrennungsmotors mit Öl benetzt. Somit ist beim Start des Verbrennungsmotors sofort Öldruck vorhanden und an bzw. in den Schmierstellen ist bereits ausreichend Öl für die Schmierung vorhanden. Die innere Reibung des Verbrennungsmotors ist somit ab dem Start des Verbrennungsmotors minimiert und einem erhöhten Verschleiß der tribologischen Bauteile ist entgegengewirkt. wetted tribological components of the internal combustion engine with oil. Thus, at the start of the engine immediately oil pressure is present and at or in the lubrication points is already sufficient oil for lubrication available. The internal friction of the internal combustion engine is thus minimized from the start of the internal combustion engine and increased wear of the tribological components is counteracted.
Für den Fall, dass beispielsweise das Hybrid-Fahrzeug nach einem Start längere Zeit in rein elektrischem Betrieb gefahren wird, wird weiter das periodische Verbinden der Abtriebswellen während des rein elektrischen Antriebes vorgeschlagen und das Schleppen des Verbrennungsmotors in einem Zeitbereich von 0,5 bis 10 [s], bis ein definierter Öldruck in der Ölumlaufschmierung aufgebaut ist. Die Schleppvorgänge können, wie gerade ausgeführt, in einem Zeitbereich von mehreren zehntel Sekunden und mehreren Sekunden liegen. Somit wird bei rein elektrischem Betrieb verhindert, dass sich nach und nach der Öldruck über die Zeit im In the event that, for example, the hybrid vehicle is driven for a long time in a purely electrical operation after a start, the periodic connection of the output shafts during the purely electric drive is further proposed and the towing of the internal combustion engine in a time range of 0.5 to 10 [ s] until a defined oil pressure in the oil circulation lubrication is established. The towing operations can, as just executed, in a time range of several tenths of a second and several seconds. Thus, in purely electrical operation prevents the oil pressure over time in the
Verbrennungsmotor abbaut, und der Verbrennungsmotor ohne Öldruck gestartet wird, was zu Verschleißproblemen führen kann. Engine degrades, and the engine is started without oil pressure, which can lead to wear problems.
Weiter kann beim Schleppen des Verbrennungsmotors durch die elektrische Maschine eine Schleppmomentkompensation durchgeführt werden, damit der Fahrer des Hybrid-Fahrzeuges die Schleppperioden nicht wahrnimmt und der Fahrkomfort beeinträchtigt würde. Further, in dragging the internal combustion engine by the electric machine, a drag torque compensation can be performed so that the driver of the hybrid vehicle does not perceive the tow periods and the ride comfort would be impaired.
In einem weiteren Schritt kann nach dem Starten des Verbrennungsmotors das Weiterfahren des Hybrid-Fahrzeuges entweder nur mit dem In a further step, after starting the internal combustion engine driving on of the hybrid vehicle with either
Verbrennungsmotor oder mit der elektrischen Maschine und dem Internal combustion engine or with the electric machine and the
Verbrennungsmotor erfolgen. Dies erfolgt je nach angeforderter Leistung durch den Fahrer des Hybrid-Fahrzeuges. Internal combustion engine. This is done depending on the requested performance by the driver of the hybrid vehicle.

Claims

Verfahren zum Betrieb eines Hybrid-Fahrzeuges Patentansprüche Method for operating a hybrid vehicle Claims
1. Verfahren zum Betrieb eines Hybrid-Fahrzeuges nach einem Stillstand des Hybrid-Fahrzeuges mit einer elektrischen Maschine und einem Verbrennungsmotor mit einer Öiumlaufschmierung, wobei die elektrische Maschine und der Verbrennungsmotor unabhängig voneinander betreibbar sind und deren Abtriebswellen über eine Kupplung und/oder ein Getriebe für einen getrennten oder 1. A method for operating a hybrid vehicle after a standstill of the hybrid vehicle with an electric machine and an internal combustion engine with an oil immersion lubrication, wherein the electric machine and the internal combustion engine are independently operable and their output shafts via a clutch and / or a transmission for a separate or
gemeinsamen Antrieb miteinander in Wirkverbindung bringbar sind, gekennzeichnet durch folgende Verfahrensschritte:  common drive can be brought into operative connection with each other, characterized by the following method steps:
• Starten der elektrischen Maschine und Anfahren des Hybrid- Fahrzeuges mit rein elektrischem Antrieb,  Starting the electric machine and starting the hybrid vehicle with purely electric drive,
• Verbinden der Abtriebswellen während des elektrischen Antriebes und Schleppen des Verbrennungsmotors ohne Kraftstoffeinbringung, bis ein definierter Öldruck in der  • Connecting the output shafts during the electric drive and towing the internal combustion engine without fuel injection, until a defined oil pressure in the
Öiumlaufschmierung aufgebaut ist,  Oullaufschmierung is constructed,
• Abkoppeln der Abtriebswellen,  • decoupling the output shafts,
• Weiterfahren des Hybrid-Fahrzeuges mit rein elektrischem  • Continue the hybrid vehicle with purely electric
Antrieb, bis der Verbrennungsmotor gestartet wird. Drive until the engine is started.
2. Verfahren nach Patentanspruch 1 , 2. Method according to claim 1,
gekennzeichnet durch folgende Verfahrensschritte:  characterized by the following process steps:
• bei längerem Fahren des Hybrid-Fahrzeuges nach dem  • when driving the hybrid vehicle for a long time after the
Anfahren mit rein elektrischem Antrieb,  Starting with purely electric drive,
• periodisches Verbinden der Abtriebswellen während des elektrischen Antriebes und Schleppen des  • periodically connecting the output shafts during the electric drive and towing the
Verbrennungsmotors, bis ein definierter Öldruck in der Ölumlaufschmierung aufgebaut ist.  Internal combustion engine until a defined oil pressure in the oil circulation lubrication is established.
3. Verfahren nach Patentanspruch 1 oder 2, 3. Method according to claim 1 or 2,
gekennzeichnet durch folgenden Verfahrensschritt:  characterized by the following method step:
• nach dem Starten des Verbrennungsmotors Weiterfahren des Hybrid-Fahrzeuges nur mit dem Verbrennungsmotor oder mit der elektrischen Maschine und dem Verbrennungsmotor.  • after starting the internal combustion engine driving on the hybrid vehicle only with the internal combustion engine or with the electric machine and the internal combustion engine.
EP16702507.1A 2015-03-18 2016-01-27 Method for operating a hybrid vehicle Withdrawn EP3271201A1 (en)

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