DE102005049197A1 - Hybrid-drive method for improving agility for a motor vehicle with a hybrid drive keeps a vehicle's internal combustion engine at an optimum operating point - Google Patents

Hybrid-drive method for improving agility for a motor vehicle with a hybrid drive keeps a vehicle's internal combustion engine at an optimum operating point Download PDF

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Publication number
DE102005049197A1
DE102005049197A1 DE102005049197A DE102005049197A DE102005049197A1 DE 102005049197 A1 DE102005049197 A1 DE 102005049197A1 DE 102005049197 A DE102005049197 A DE 102005049197A DE 102005049197 A DE102005049197 A DE 102005049197A DE 102005049197 A1 DE102005049197 A1 DE 102005049197A1
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Prior art keywords
combustion engine
internal combustion
torque
motor vehicle
hybrid
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Ceased
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DE102005049197A
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German (de)
Inventor
Johannes Dr. Kaltenbach
Claus Dr. Granzow
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Priority to DE102005049197A priority Critical patent/DE102005049197A1/en
Publication of DE102005049197A1 publication Critical patent/DE102005049197A1/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • 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
    • 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
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/10—Temporary overload
    • B60L2260/12—Temporary overload 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

A vehicle's internal combustion engine is kept at an optimum operating point. A surplus existing from time to time is compensated electromotively on a drive torque in an internal combustion engine by the fact that braking torque is applied electromotively. A motor vehicle's axle is driven by an internal combustion engine.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug gemäß dem Oberbegriff des Patentanspruchs 1.The The present invention relates to a process for increasing agility for a a hybrid drive comprehensive motor vehicle according to the preamble of Patent claim 1.

Aus dem Stand der Technik sind Fahrzeuge bekannt, welche einen Hybridantrieb aufweisen. Hierbei wird als Antriebsaggregat hauptsächlich ein Verbrennungsmotor verwendet, welcher die erforderliche Leistung über eine große Reichweite zur Verfügung stellt. Bei derartigen Antrieben ist zudem eine elektrische Maschine (Elektromotor) vorgesehen, welche die Vorteile eines Elektroantriebs, beispielsweise die Bremsenergienutzung und die Emissionsfreiheit beim Fahren mit niedrigen Fahrzeuggeschwindigkeiten bietet.Out In the prior art vehicles are known which a hybrid drive exhibit. This is mainly a combustion engine as a drive unit which uses the required power over a long range to disposal provides. In such drives is also an electric machine (Electric motor) provided the advantages of an electric drive, for example, the use of braking energy and the absence of emissions when driving at low vehicle speeds.

Aus der DE 101 15 984 A1 der Anmelderin ist ein Antriebssystem für ein Kraftfahrzeug bekannt, umfassend eine Kupplung und ein Getriebe zur Übertragung und Wandlung eines von einem Antriebsaggregat erzeugten Drehmomentes auf Antriebsräder des Kraftfahrzeugs, wobei eine als Motor betreibbare elektrische Maschine als Starter vorgesehen ist, und wobei sowohl die elektrische Maschine als auch das Antriebsaggregat jeweils ein Drehmoment in eine Drehrichtung und ein Drehmoment in die entgegengesetzte Drehrichtung erzeugen können. Durch diese Konzeption soll der Nachteil von Hybridantrieben, nämlich der große erforderliche Bauraum, weitgehend vermieden werden.From the DE 101 15 984 A1 the applicant is known a drive system for a motor vehicle, comprising a clutch and a transmission for transmitting and converting a torque generated by a drive unit to driving wheels of the motor vehicle, wherein a motor-operated electric machine is provided as a starter, and wherein both the electric machine as Also, the drive unit can each generate a torque in one direction of rotation and a torque in the opposite direction of rotation. By this design, the disadvantage of hybrid drives, namely the large space required to be largely avoided.

Aus der WO 01/76902 A1 ist eine Anordnung von Elektromaschinen bekannt, deren Rotoren jeweils mit einem Rad eines von einem Verbrennungsmotor angetriebenen Kraftfahrzeugs drehfest verbindbar sind, wobei eine oder mehrere dieser Maschinen in Abhängigkeit von wenigstens einem Sensorsignal motorisch oder generatorisch betreibbar sind.Out WO 01/76902 A1 discloses an arrangement of electric machines, their rotors each with a wheel of an internal combustion engine driven motor vehicle are rotatably connected, wherein a or more of these machines depending on at least one Sensor signal can be operated by a motor or generator.

Bei den aus dem Stand der Technik bekannten Systemen ist üblicherweise vorgesehen, dass für den Fall, dass der elektrische Energiespeicher, welcher durch die Elektromaschine mit der überschüssigen verbrennungsmotorischen Leistung aufgeladen wird, keine weitere Energie mehr aufnehmen kann, die überschüssige verbrennungsmotorische Leistung abgebaut wird, was in dem Nachteil resultiert, dass die Agilitätssteigerung aufgegeben wird. Des weiteren wird der Verbrennungsmotor im Zug-Schub-Wechsel betrieben, was bedeutet, dass der Motor nicht immer im optimalen Bereich betrieben wird.at the systems known from the prior art is usually provided that for the Case that the electrical energy storage, which by the electric machine with the excess internal combustion engine Power is charged, no more energy can absorb, the excess internal combustion engine Performance is degraded, resulting in the disadvantage that the Agilitätssteigerung is abandoned. Furthermore, the internal combustion engine in the train-thrust change operated, which means that the engine is not always optimal Area is operated.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug anzugeben, im Rahmen dessen eine schnelle Reaktion auf eine Momentanforderung gewährleistet wird.Of the The present invention is based on the object, a method to increase agility for a Specify a motor vehicle comprehensive hybrid drive, in the context which ensures a quick response to a moment request becomes.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere erfindungsgemäße Ausgestaltungen und Vorteile gehen aus den Unteransprüchen hervor.These The object is solved by the features of claim 1. Further Embodiments of the invention and advantages are apparent from the dependent claims.

Demnach wird vorgeschlagen, den Verbrennungsmotor des Fahrzeugs im optimalen Betriebspunkt zu halten und den zeitweise vorhandenen Überschuss an verbrennungsmotorischem Antriebsmoment elektromotorisch zu kompensieren.Therefore It is proposed to optimize the internal combustion engine of the vehicle Operating point and the temporarily existing surplus to compensate for internal combustion engine drive torque by an electric motor.

Vorzugsweise wird der Überschuss an verbrennungsmotorischem Antriebsmoment dadurch kompensiert, dass elektromotorisch Bremsmoment aufgebracht wird. Die Bremsleistung des Elektromotors bzw. der Elektromotoren kann hierbei generatorisch genutzt werden und beispielsweise in den Energiespeicher gegeben werden.Preferably will be the surplus at internal combustion engine drive torque compensated by that electric motor braking torque is applied. The braking power of the electric motor or the electric motors can be regenerative be used and given for example in the energy storage become.

Durch die erfindungsgemäße Konzeption kann das Fahrzeug direkter am Gas gehalten werden, wodurch die Agilität in vorteilhafter Weise erhöht wird. Das Fahrzeug kann schnell auf eine Momentanforderung reagieren, da die Verbrennungsmaschine nicht erst zum optimalen Betriebspunkt geführt werden muss, sondern lediglich das bremsende Moment der Elektromotoren zurückgenommen werden muss.By the concept of the invention can the vehicle are held more directly on the gas, which makes the agility in more advantageous Way is increased. The vehicle can react quickly to an instantaneous request because the combustion engine does not first reach the optimal operating point guided must be, but only the braking moment of the electric motors withdrawn must become.

Beispielsweise kann bei einer Kurvenfahrt das Antriebsmoment der Räder des Fahrzeugs zu Beginn reduziert werden, indem das Verbrennungsmotormoment konstant gehalten wird und lediglich der Elektromotor ein Bremsmoment aufbringt. Beim Beschleunigen aus der Kurve heraus kann dann das Elektrobremsmoment sehr schnell zurückgefahren werden, um das Gesamtantriebsmoment zu steigern und das Verbrennungsmotormoment optimal zu nutzen.For example When cornering, the drive torque of the wheels of Vehicles are initially reduced by the engine torque is kept constant and only the electric motor braking torque applies. When accelerating out of the curve then the electric braking torque to be driven back very quickly, to increase the total drive torque and the engine torque to use optimally.

Durch das erfindungsgemäße Verfahren können zudem Zug-Schub-Wechsel an der Verbrennungsmaschine weitgehend vermieden werden, was in einer Verhinderung von Antriebsstrangschwingungen bei Zug-Schub-Wechseln resultiert. Auf diese Weise wird eine Erhöhung des Fahrkomforts und der Leistungsfähigkeit erzielt.By the inventive method can also Train-push change be largely avoided on the internal combustion engine, resulting in a prevention of driveline vibrations in train-thrust changes results. This will increase driving comfort and performance achieved.

Zur Durchführung des erfindungsgemäßen Verfahrens kann beispielsweise eine Achse des Fahrzeugs von dem Verbrennungsmotor angetrieben werden, wobei die zweite Achse des Fahrzeugs elektromotorisch angetrieben werden kann. Es kann vorgesehen sein, dass die elektromotorisch angetriebene Achse über eine Elektromaschine oder über zwei Elektromaschinen angetrieben wird.To carry out the method according to the invention, for example, an axis of the vehicle can be driven by the internal combustion engine, wherein the second axis of the vehicle can be driven by an electric motor. It may be ahead be seen that the electric motor driven axle is driven by an electric machine or two electric machines.

Besonders vorteilhaft ist es, wenn die zumindest eine Elektromaschine in den Antriebsstrang integriert ist, beispielsweise zwischen Verbrennungsmotor und Getriebe angeordnet ist. Der Antriebsstrang kann hierbei als 1-Achs- oder Allradantrieb ausgeführt sein.Especially It is advantageous if the at least one electric machine in the Powertrain is integrated, for example, between internal combustion engine and gear is arranged. The drive train can here as 1-axle or four-wheel drive be executed.

Claims (6)

Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug, dadurch gekennzeichnet, dass der Verbrennungsmotor des Fahrzeugs im optimalen Betriebspunkt gehalten wird, wobei der zeitweise vorhandene Überschuss an verbrennungsmotorischem Antriebsmoment elektromotorisch kompensiert wird.A method for Agilitätssteigerung for a hybrid drive comprehensive motor vehicle, characterized in that the internal combustion engine of the vehicle is maintained at the optimum operating point, wherein the temporary excess of internal combustion engine drive torque is compensated by an electric motor. Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Überschuss an verbrennungsmotorischem Antriebsmoment dadurch kompensiert wird, dass elektromotorisch Bremsmoment aufgebracht wird.Agility enhancement method for a hybrid drive comprehensive motor vehicle according to claim 1, characterized in that that the surplus is compensated for by internal combustion engine drive torque, that electric motor braking torque is applied. Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug nach Anspruch 2, dadurch gekennzeichnet, dass die Bremsleistung der Elektromotoren generatorisch genutzt wird.Agility enhancement method for a hybrid drive Comprehensive motor vehicle according to claim 2, characterized in that that the braking power of the electric motors is used as a generator. Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass eine Achse des Fahrzeugs von dem Verbrennungsmotor angetrieben wird, wobei die zweite Fahrzeugachse elektromotorisch angetrieben wird.Agility enhancement method for a hybrid drive comprehensive motor vehicle according to claim 1, 2 or 3, characterized that an axis of the vehicle is driven by the internal combustion engine is, with the second vehicle axle driven by an electric motor becomes. Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug nach Anspruch 4, dadurch gekennzeichnet, dass die elektromotorisch angetriebene Achse über eine Elektromaschine oder über zwei Elektromaschinen angetrieben wird.Agility enhancement method for a hybrid drive Comprehensive motor vehicle according to claim 4, characterized in that that the electric motor driven axle via an electric machine or two Electric machines is driven. Verfahren zur Agilitätssteigerung für ein einen Hybridantrieb umfassendes Kraftfahrzeug nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass bei einer Kurvenfahrt das Antriebsmoment der Räder des Fahrzeugs zu Beginn reduziert wird, indem das Verbrennungsmotormoment konstant gehalten wird und der Elektromotor ein Bremsmoment aufbringt, wobei beim Beschleunigen aus der Kurve heraus das Elektrobremsmoment sehr schnell zurückgefahren wird, um das Gesamtantriebsmoment zu steigern und das Verbrennungsmotormoment optimal zu nutzen.Agility enhancement method for a hybrid drive comprehensive motor vehicle according to one of the preceding claims, characterized characterized in that when cornering the drive torque of the Wheels of the Vehicle is initially reduced by the engine torque is kept constant and the electric motor applies a braking torque, wherein when accelerating out of the curve, the Elektrobremsmoment moved back very fast is to increase the total drive torque and the engine torque to use optimally.
DE102005049197A 2005-10-14 2005-10-14 Hybrid-drive method for improving agility for a motor vehicle with a hybrid drive keeps a vehicle's internal combustion engine at an optimum operating point Ceased DE102005049197A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542059C1 (en) * 1985-11-28 1987-06-04 Opel Adam Ag Motor vehicle with main drive axle and switchable drive axle
DE4217668C1 (en) * 1992-05-28 1993-05-06 Daimler Benz Ag Method for controlling a hybrid drive that drives a vehicle
DE19919454A1 (en) * 1999-04-29 2000-11-09 Daimler Chrysler Ag Vehicle drive arrangement has electric drive that can be automatically controlled or regulated to at least partially compensate for gaps in force transfer during gear changes
DE10146386A1 (en) * 2001-09-20 2003-04-17 Gkn Automotive Gmbh drive unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3542059C1 (en) * 1985-11-28 1987-06-04 Opel Adam Ag Motor vehicle with main drive axle and switchable drive axle
DE4217668C1 (en) * 1992-05-28 1993-05-06 Daimler Benz Ag Method for controlling a hybrid drive that drives a vehicle
DE19919454A1 (en) * 1999-04-29 2000-11-09 Daimler Chrysler Ag Vehicle drive arrangement has electric drive that can be automatically controlled or regulated to at least partially compensate for gaps in force transfer during gear changes
DE10146386A1 (en) * 2001-09-20 2003-04-17 Gkn Automotive Gmbh drive unit

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