Die Erfindung betrifft ein Verfahrenzum Steuern eines Hybridantriebs bei einem Kraftfahrzeug gemäß dem Oberbegriffvon Patentanspruch 1.The invention relates to a methodfor controlling a hybrid drive in a motor vehicle according to the preambleof claim 1.
Bekannt sind Verfahren, welche beiElektrofahrzeugen oder Fahrzeugen mit Hybridantrieb beim Bremsenebenso wie beim Bergabfahren eine Energierückgewinnung (Rekuperation)ermöglichen.Methods are known which are used forElectric vehicles or vehicles with hybrid drive when brakingenergy recovery (recuperation) just like when driving downhillenable.
Weiterhin ist bekannt, die Betriebsweisewie beispielsweise Elektroantrieb oder verbrennungsmotorischer Antriebin Abhängigkeitvon der Fahrzeugumgebung zu beeinflussen. Die Informationen über dieFahrzeugumgebung kann z.B. die unmittelbare Umgebung (Stadtverkehroder Überlandfahrt)betreffen und von einem Navigationssystem stammen.The mode of operation is also knownsuch as electric drive or internal combustion engine drivedependent oninfluenced by the vehicle environment. The information about theThe vehicle environment can e.g. the immediate vicinity (city trafficor overland trip)concern and come from a navigation system.
Aus
Dieses Verfahren ist problematisch,wenn ein kleiner elektrischer Energiespeicher verwendet wird. Jekleiner der elektrische Energiespeicher ist, desto häufiger werdenLade- und Entladevorgänge, d.h.die Energiereserven müsseneffizienter genutzt werden, und das Energiemanagement wird wichtiger. Folglichmüssenbeim Energiemanagement möglichstalle Parameter berücksichtigtwerden, mit denen ein Umschalten zwischen den Komponenten einesHybridantriebs optimiert werden kann, so dass die Energiereservenintelligenter genutzt werden können.This procedure is problematicif a small electrical energy storage device is used. everthe smaller the electrical energy storage, the more frequent it will beCharging and discharging processes, i.e.the energy reserves mustbe used more efficiently and energy management becomes more important. consequentlyhave toin energy management if possibleall parameters taken into accountwith which switching between the components of aHybrid drive can be optimized so that the energy reservescan be used more intelligently.
Aufgabe der vorliegenden Erfindungist es, eine streckenabhängigeVorhersage der Energiebilanz zu ermöglichen, so dass der elektrischeAntrieb des Hybridantriebs eines Kraftfahrzeugs effizienter genutztwerden kann.Object of the present inventionis a route dependentTo enable prediction of the energy balance, so that the electricalDrive of the hybrid drive of a motor vehicle used more efficientlycan be.
Diese Aufgabe wird erfindungsgemäß gelöst durchdas Verfahren nach Anspruch 1. Bevorzugte Ausführungsformen der Erfindungsind Gegenstand der Unteransprüche.According to the invention, this object is achieved bythe method of claim 1. Preferred embodiments of the inventionare the subject of the subclaims.
Bei dem erfindungsgemäßen Verfahrenwerden fahrzeugspezifische Daten (z.B. Gewicht, Antriebssystem,Wirkungsgradkette, elektrischer Energiebedarf des Bordnetzes), Fahrstreckendaten,meteorologische Daten, sowie fahrerspezifische Daten (z.B. sparsam,sportlich, "nervöser Gasfuß") miteinander verknüpft. DasErgebnis dieser Verknüpfung istein der Fahrstrecke zugehörigesEnergieprofil, welches dem Fahrzeugantrieb als Anhaltswert bei derWahl und Verteilung der Antriebsart, elektrisch und verbrennungsmotorischdient. Mit anderen Worten, die gewonnene Information ist eine Stützgröße bei demUmschalten zwischen elektrischem und verbrennungsmotorischem Antrieb.In the method according to the inventionvehicle-specific data (e.g. weight, drive system,Efficiency chain, electrical energy requirements of the electrical system), route data,meteorological data, as well as driver-specific data (e.g. economical,sporty, "nervous gas foot") linked together. TheThe result of this link isone belonging to the routeEnergy profile, which the vehicle drive as a reference value atChoice and distribution of the drive type, electric and combustion engineserves. In other words, the information obtained is a base for theSwitching between electric and combustion engine drive.
Das endungsgemäße Verfahren zum Steuern einesHybridantriebs mit mehreren Antriebskomponenten bei einem Kraftfahrzeugin Abhängigkeit vonInformationen übereine aktuelle und eine zu erwartende Fahrsituation, die über fahrzeuginterneund überfahrzeugexterne Informationsquellen in einem elektronischen Kraftfahrzeugsystemerfasst werden, wobei abhängigvon diesen Informationen und abhängigvon energie-, sicherheits-, komfort-, schadstoffemissions-, geräuschund/oderfahrertypbezogenen Vorgaben im elektronischen Kraftfahrzeugsystemeine Fahrbetriebsstrategie zur Steuerung wenigstens einer der mehrerenAntriebskomponenten ermittelt wird, ist dadurch gekennzeichnet,dass die Informationen Fahrstreckendaten einer Fahrstrecke umfassen,die mit fahrzeugspezifischen Daten verknüpft werden, so dass sich einder Fahrstrecke zugehörigesEnergieprofil ergibt, das bei der Ermittlung der Fahrbetriebsstrategieberücksichtigtwird, und in Abhängigkeitvon der Fahrbetriebsstrategie wenigstens eine der mehreren Antriebskomponentendes Hybridantriebs automatisch aktiviert oder deaktiviert wird.The method according to the invention for controlling aHybrid drive with multiple drive components in a motor vehiclein dependence ofinformation abouta current and an expected driving situation, which is internal to the vehicleand overinformation sources external to the vehicle in an electronic motor vehicle systemare recorded, dependingdependent on this information andof energy, safety, comfort, pollutant emissions, noise and / orDriver type-related requirements in the electronic motor vehicle systema driving strategy for controlling at least one of the pluralityDrive components is determined, is characterized bythat the information includes route data of a route,that are linked to vehicle-specific data so that abelonging to the routeEnergy profile results when determining the driving strategyconsideredwill, and dependingat least one of the multiple drive components from the driving operation strategyof the hybrid drive is automatically activated or deactivated.
Insbesondere können die Informationen außerdem mitmeteorologischen Daten bzw. mit fahrerspezifischen Daten verknüpft werden.In particular, the information can also be usedmeteorological data or linked to driver-specific data.
Ein Vorteil der Erfindung bestehtdarin, dass ihre Implementierung kostengünstig ist, da es sich im wesentlichenum eine Softwarelösunghandelt. Ferner wird das Potential der Verbrauchseinsparung effizienterausgeschöpftund damit der Energieeinsatz optimiert, so dass auch die Emissionenreduziert werden. Daraus ergibt sich wiederum eine Verbesserung desKomforts und eine Verminderung des Verschleißes.An advantage of the invention isin that their implementation is inexpensive as it is essentiallya software solutionis. Furthermore, the potential for saving fuel consumption becomes more efficientexhaustedand thus optimizes the use of energy so that the emissionsbe reduced. This in turn results in an improvement inComfort and a reduction in wear.
Weitere Merkmale und Vorteile derErfindung ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispiels,bei der Bezug genommen wird auf die beigefügten Zeichnungen.Other features and advantages ofInvention result from the following description of an embodiment,reference is made to the accompanying drawings.
In
Um den Energiespeicher
Der Umfelderfassungsblock
Beispiele für die Daten der Sensoren
Im Speicher
Die Eingangsgrößen von dem Umfelderfassungsblock
Das Ergebnis der Berechnungen inder Recheneinheit
Die so ermittelte Fahrbetriebsstrategiewird von dem Fahrbetriebsstrategieblock
Die Umsetzung der Fahrbetriebsstrategiein Umschaltbefehle fürdie Antriebskomponenten
Sind die Stellgrößen längere Zeit stabil, so wirddie Fahrbetriebsstrategie, die von dem Fahrbetriebsstrategieblock
In
Bei dem Verfahren zum Steuern einesHybridantriebs in Abhängigkeitvon Informationen über eineaktuelle und eine zu erwartende Fahrsituation, die über fahrzeuginterneund überfahrzeugexterne Informationsquellen in einem elektronischen Kraftfahrzeugsystemerfasst werden, werden in einem ersten Berechnungsblock Energieäquivalenteberechnet, die die Basis fürdie Steuerung des Hybridantriebs
Das Ergebnis von dem ersten Berechnungsblockwird nachfolgend in einem zweiten Berechnungsblock korrigiert, wennweitere Einflüsseaufgrund von geändertenVerkehrswegebedingungen vorliegen oder zu erwarten sind. Mit anderenWorten, die Energieäquivalentewerden in Abhängigkeitvon der Straßenartkorrigiert, wobei berücksichtigtwird, ob es sich beispielsweise um eine Autobahn oder einen Feldweghandelt. Ferner werden in diesem zweiten Berechnungsblock Geschwindigkeitsbegrenzungen,Kurven und Kreuzungen berücksichtigt.Der zweite Berechnungsblock entspricht Schritt 18 in
Einflüsse, die bisher noch nichtberücksichtigtwerden konnten, werden im nachfolgenden dritten Berechnungsblockherangezogen. Dabei handelt es sich z.B. um Verkehrsinformationen,die bereits in Zusammenhang mit
Schließlich wird bei der in
Abschließend wird in Schritt 21 dasUmschalten der Antriebskomponenten
Damit wird im Gegensatz zum Standder Technik die Anpassung der Umschaltsteuerung von Hybridantriebenmit den zugehörigenEnergiespeichern an wiederkehrende Fahrstrecken, z.B. den Weg zurArbeit, möglich.In contrast to the standthe technology of adapting the switchover control of hybrid driveswith the associatedEnergy storage on recurring routes, e.g. the way toWork, possible.
Im folgenden wird ein kurzes Beispielfür das obenerläuterteerfindungsgemäße Verfahrenangegeben. Bei einer Bergabfahrt auf einer Alpenpassstrasse liegtder Schwerpunkt auf Energierückgewinnung,d.h. auf dem Laden des oder der Energiespeicher. Voraussetzung istaber die Aufnahmefähigkeit derselben.Dies hängtaber insbesondere bei kleinen Energiespeichern von der Entladungab, welche durch dazwischenliegende Beschleunigungsstrecken abhängt. Reichendiese nicht aus, um den Energiespeicher genügend aufnahmefähig zu halten,ist auch die Verwendung der Überschussenergiebeispielsweise fürdie Motor-Innenraumaufheizung denkbar.Hierdurch wird ein Abkühlenverhindert bzw. ein Aufheizen des Motors gefördert, ohne Kraftstoff zu benötigen. Imeinfachsten Fall geschieht diese Bergabfahrt rein elektrisch, mitdem Nebeneffekt, dass der Verbrennungsmotor beim Starten bereits betriebswarmist, was neben einer deutlichen Emissionsminderung auch zu einerVerschleißminderung führt.The following is a brief examplefor the aboveexplainedinventive methodspecified. On a downhill run on an Alpine pass roadthe focus on energy recovery,i.e. on the charging of the energy store (s). Requirement isbut their receptivity.This dependsbut especially in the case of small energy stores from dischargewhich depends on the acceleration distances in between. Passnot enough to keep the energy storage sufficiently receptive,is also the use of excess energyfor example forthe engine interior heating conceivable.This will cool downprevents or promotes heating of the engine without using fuel. in theIn the simplest case, this downhill run is purely electric, withthe side effect that the internal combustion engine is already warm when startingis what, in addition to a significant reduction in emissions, also leads to aWear reduction leads.
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| DE10226143ADE10226143B4 (en) | 2002-06-13 | 2002-06-13 | Method for controlling a hybrid drive in a motor vehicle | 
| Application Number | Priority Date | Filing Date | Title | 
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| DE10226143ADE10226143B4 (en) | 2002-06-13 | 2002-06-13 | Method for controlling a hybrid drive in a motor vehicle | 
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| DE10226143A1true DE10226143A1 (en) | 2004-01-08 | 
| DE10226143B4 DE10226143B4 (en) | 2006-02-16 | 
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| DE10226143AExpired - Fee RelatedDE10226143B4 (en) | 2002-06-13 | 2002-06-13 | Method for controlling a hybrid drive in a motor vehicle | 
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| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8364 | No opposition during term of opposition | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
| R079 | Amendment of ipc main class | Free format text:PREVIOUS MAIN CLASS: B60W0020000000 Ipc:B60W0020120000 |