DE10221563A1 - Motor vehicle with main IC engine and auxiliary IC engine to operate turbocharger, to improve performance and increase environmental friendliness - Google Patents

Motor vehicle with main IC engine and auxiliary IC engine to operate turbocharger, to improve performance and increase environmental friendliness

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Publication number
DE10221563A1
DE10221563A1 DE10221563A DE10221563A DE10221563A1 DE 10221563 A1 DE10221563 A1 DE 10221563A1 DE 10221563 A DE10221563 A DE 10221563A DE 10221563 A DE10221563 A DE 10221563A DE 10221563 A1 DE10221563 A1 DE 10221563A1
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DE
Germany
Prior art keywords
motor vehicle
internal combustion
combustion engine
engine
auxiliary internal
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Withdrawn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
DE10221563A
Other languages
German (de)
Inventor
Peter Fledersbacher
Siegfried Sumser
Alexander Von Gaisberg
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE10221563A priority Critical patent/DE10221563A1/en
Publication of DE10221563A1 publication Critical patent/DE10221563A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/14—Control of the alternation between or the operation of exhaust drive and other drive of a pump, e.g. dependent on speed
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The vehicle has an auxiliary IC engine (10) to drive the device (11) for charging pressure intensification and/or exhaust gas processing. The device is esp. an exhaust turbocharger. Exhaust from the auxiliary engine is supplied to the turbocharger during at least one operating phase, for run-up of the turbocharger. Exhaust may also be supplied to a catalytic converter (12) for warming-up, and to a particle filter for regeneration. The auxiliary engine is connected to a generator (15) to supply vehicle mains, and to a compressor (16).

Description

Die Erfindung betrifft ein Kraftfahrzeug mit einer Hauptbrennkraftmaschine und einer Vorrichtung zur Ladedruckerhöhung der Hauptbrennkraftmaschine nach dem Oberbegriff des Anspruchs 1. The invention relates to a motor vehicle with a Main engine and a device for boost pressure increase the Main internal combustion engine according to the preamble of claim 1.

Um den Ladedruck und damit insbesondere die Leistung einer Brennkraftmaschine zu erhöhen, ist bekannt, eine Vorrichtung zur Erhöhung des Ladedrucks, wie insbesondere einen Abgasturbolader oder einen oder einen direkt vom Motor angetriebenen Kompressor, vorzusehen. To the boost pressure and thus in particular the performance of a Increase internal combustion engine is known, a device to increase the boost pressure, in particular a Exhaust gas turbocharger or one or one directly driven by the engine Compressor, to provide.

Ferner ist aus der DE 38 43 673 C2 eine Stromversorgungsanlage für ein Kraftfahrzeug mit einer Batterie sowie einem durch eine Hilfsbrennkraftmaschine antreibbaren elektrischen Generator bekannt, über den ein Bordnetz versorgbar ist. Furthermore, from DE 38 43 673 C2 a power supply system for a motor vehicle with a battery and a through an auxiliary internal combustion engine drivable electric generator known via which a vehicle electrical system is supplied.

Der Erfindung liegt insbesondere die Aufgabe zugrunde, ein gattungsgemäßes Kraftfahrzeug mit einem verbesserten Wirkungsgrad und/oder mit einer verbesserten Umweltverträglichkeit bereitzustellen. Sie wird gemäß der Erfindung durch die Merkmale des Anspruchs 1 gelöst. Weitere Ausgestaltungen ergeben sich aus den Unteransprüchen. The invention is in particular the object of a generic motor vehicle with an improved Efficiency and / or improved environmental compatibility provide. It is according to the invention by the features of claim 1. Further embodiments arise from the dependent claims.

Die Erfindung geht aus von einem Kraftfahrzeug mit wenigstens einer Hauptbrennkraftmaschine für einen Kraftfahrzeugantrieb und mit einer Vorrichtung zur Ladedruckerhöhung der Hauptbrennkraftmaschine. The invention relates to a motor vehicle with at least a main engine for a motor vehicle drive and with a device for boost pressure increase of Main engine.

Es wird vorgeschlagen, daß zumindest eine Hilfsbrennkraftmaschine vorgesehen ist, die zum Antrieb der Vorrichtung zur Ladedruckerhöhung und/oder zur Abgasnachbehandlung nutzbar ist. Die Hilfsbrennkraftmaschine kann vorteilhaft unabhängig von einer Antriebsleistung wirkungsgradoptimiert auf ein kleines Kennfeldfenster ausgelegt und betrieben werden, wodurch der Gesamtwirkungsgrad und/oder die Umweltverträglichkeit verbessert werden kann. Die Hilfsbrennkraftmaschine wird vorteilhaft in einem Betriebsbereich hoher Last möglichst nahe am Optimum, von größer 40% für Diesel- und größer 35% für Ottomotoren, betrieben. It is suggested that at least one Auxiliary internal combustion engine is provided, which is used to drive the device for Boost pressure increase and / or exhaust gas aftertreatment is available. The auxiliary internal combustion engine can advantageously independent of a drive power efficiency optimized to a small Map window can be designed and operated, whereby the Overall efficiency and / or environmental compatibility can be improved. The auxiliary internal combustion engine becomes advantageous in a high load operating range as close to the optimum as possible, of greater than 40% for diesel engines and greater than 35% for gasoline engines, operated.

Die Vorrichtung zur Ladedruckerhöhung kann von einem Kompressor gebildet sein, der zumindest in einzelnen Betriebsbereichen von der Hilfsbrennkraftmaschine angetrieben sein kann, beispielsweise über ein gestuft oder stufenlos einstellbares Getriebe oder über eine Direktverbindung. Insbesondere kann der Kompressor vorteilhaft bei einem Kaltstart von der Hilfsbrennkraftmaschine angetrieben werden, um Frischluft in einen Abgastrakt einzublasen; damit ist ein schnelleres Anspringen des Katalysators gewährleistet. The device for boost pressure increase of a Compressor be formed, at least in individual Operating ranges can be driven by the auxiliary engine, for example, via a stepped or infinitely adjustable Gearbox or via a direct connection. In particular, can the compressor advantageous in a cold start of the Auxiliary internal combustion engine are driven to fresh air into one Blow in the exhaust tract; this is a faster start ensured the catalyst.

Besonders vorteilhaft ist die erfindungsgemäße Lösung jedoch bei einer Hauptbrennkraftmaschine anwendbar, die durch einen Abgasturbolader aufladbar ist. Sich aus einer Abkühlung der Abgase der Hauptbrennkraftmaschine im Abgasturbolader beim Kaltstart ergebenden negativen Effekte für eine Abgasnachbehandlung können vorteilhaft zumindest weitgehend vermieden werden, und zwar indem Abgase der Hilfsbrennkraftmaschine in zumindest einer Betriebsphase zumindest einem Katalysator zugeführt und zur Aufheizung des Katalysators nutzbar sind und/oder in zumindest einer Betriebsphase zumindest einem Partikelfilter zugeführt und zur Regeneration des Partikelfilters nutzbar sind. However, the solution according to the invention is particularly advantageous applicable to a main engine, which by a Exhaust gas turbocharger is chargeable. Getting out of a cool down Exhaust gases of the main engine in the exhaust gas turbocharger Cold start resulting negative effects for a Exhaust gas aftertreatment can advantageously be at least largely avoided be in the exhaust gases of the auxiliary internal combustion engine in at least one operating phase at least one catalyst fed and used to heat the catalyst and / or in at least one phase of operation at least one Particle filter supplied and for the regeneration of the particulate filter are usable.

Die Hilfsbrennkraftmaschine kann bereits kurz nach einem Kaltstart unter hoher Last betrieben werden, was bei der Hauptbrennkraftmaschine in der Regel nicht der Fall ist. Die dadurch relativ heißen Abgase der Hilfsbrennkraftmaschine können vorteilhaft zur Aufheizung des oder der Katalysatoren oder zur Regeneration von Partikelfiltern verwendet werden. Die Zugabe von Additiven und/oder Veränderungen des Verbrennungsluftverhältnisses zur Temperatursteigerung im Partikelfilter und eine damit in der Regel verbundene Verbrauchserhöhung können vermieden werden. The auxiliary engine can already shortly after a Cold start to operate under high load, resulting in the Main engine is not usually the case. The thereby relatively hot exhaust gases of the auxiliary internal combustion engine can advantageous for heating the catalyst or catalysts or Regeneration of particulate filters are used. The addition of additives and / or modifications of the Combustion air ratio to increase the temperature in the particulate filter and a so that usually associated consumption increase can be avoided.

Eine besonders effektive und schnelle Aufheizung des Katalysators oder des Partikelfilters kann erreicht werden, indem die Abgase in zumindest einer Betriebsphase strömungstechnisch nach dem Abgasturbolader und vor dem Katalysator oder dem Partikelfilter zugeführt sind. A particularly effective and fast heating of the Catalyst or the particulate filter can be achieved by the Exhaust gases in at least one operating phase fluidly after the exhaust gas turbocharger and before the catalyst or Particle filter are supplied.

Ferner können die Abgase der Hilfsbrennkraftmaschine vorteilhaft dazu genutzt werden, den Abgasturbolader anzutreiben, und zwar indem Abgase der Hilfsbrennkraftmaschine in zumindest einer Betriebsphase dem Abgasturbolader zugeführt und für einen Hochlauf des Abgasturboladers nutzbar sind. Ein Ansprechverhalten des Abgasturboladers kann verbessert und insbesondere kann bei niedrigen Drehzahlen der Hauptbrennkraftmaschine ein sogenanntes Turboloch zumindest weitgehend vermieden werden. Further, the exhaust gases of the auxiliary internal combustion engine be used to advantage to drive the exhaust gas turbocharger, and Although by exhaust gases of the auxiliary internal combustion engine in at least an operating phase fed to the exhaust gas turbocharger and for a Run-up of the exhaust gas turbocharger can be used. On Response of the exhaust gas turbocharger can be improved and in particular can at low speeds of the main engine a so-called turbo lag at least largely avoided.

Die Abgase der Hilfsbrennkraftmaschine können strömungstechnisch ohne Steuermittel stets vor und/oder nach dem Abgasturbolader zugeführt sein. Vorteilhaft sind diese jedoch über zumindest ein Steuermittel steuerbar, so daß die Zuführung der Abgase der Hilfsbrennkraftmaschine gezielt auf bestimmte Betriebsphasen abgestimmt und der Wirkungsgrad dadurch verbessert werden kann. The exhaust gases of the auxiliary internal combustion engine can fluidically without control means always before and / or after the Be supplied exhaust turbocharger. However, these are advantageous over at least one control means controllable, so that the supply of the Exhaust gases of the auxiliary internal combustion engine targeted to certain Operating phases tuned and the efficiency thereby can be improved.

In einer weiteren Ausgestaltung der Erfindung wird vorgeschlagen, daß die Hilfsbrennkraftmaschine mit zumindest einer bordeigenen Maschine in Wirkverbindung steht. Durch die Möglichkeit der antriebsunabhängigen Auslegung und Betriebsweise kann wiederum Energie eingespart bzw. der Gesamtwirkungsgrad gesteigert werden. In a further embodiment of the invention proposed that the auxiliary internal combustion engine with at least one on-board machine is in operative connection. By the Possibility of drive independent design and operation can energy saved or the overall efficiency be increased.

Die bordeigene Maschine kann von verschiedenen, dem Fachmann als sinnvoll erscheinenden Maschinen gebildet sein, wie beispielsweise von einer Lenkhilfspumpe, einer Hochdruckpumpe für eine Direkteinspritzung usw., jedoch insbesondere von einem Generator zur Versorgung eines Bordnetzes und/oder von einem Kompressor für eine Klimaanlage, eine Kühlanlage eines Nutzfahrzeugs usw. Eine Nutzung der Hauptbrennkraftmaschine im wirkungsgradungünstigen Leerlaufbetrieb zum Antrieb bordeigener Maschinen kann vorteilhaft zumindest weitgehend vermieden werden. The on-board machine can be different, the expert be formed as meaningful machines, such as For example, from a power steering pump, a high-pressure pump for a direct injection, etc., but in particular of one Generator for supplying a vehicle electrical system and / or from a Compressor for an air conditioner, a cooling system one Commercial vehicle, etc. A use of the main engine in the low-efficiency idle operation to the drive onboard machines can advantageously at least largely avoided become.

Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Further advantages result from the following Drawing description. In the drawing, an embodiment of the Invention shown. The description and the claims contain numerous features in combination. The specialist will expediently consider the features individually and to summarize meaningful further combinations.

Fig. 1 zeigt einen schematisch dargestellten Ausschnitt eines Kraftfahrzeugs mit einer Hauptbrennkraftmaschine 17 für einen Kraftfahrzeugantrieb und mit einer Vorrichtung 11 zur Ladedruckerhöhung der Hauptbrennkraftmaschine 17, und zwar mit einem Abgasturbolader. Fig. 1 shows a schematically illustrated section of a motor vehicle with a main engine 17 for a motor vehicle drive and with a device 11 for boost pressure increase of the main engine 17 , with an exhaust gas turbocharger.

Erfindungsgemäß besitzt das Kraftfahrzeug eine Hilfsbrennkraftmaschine 10, die zum Antrieb der Vorrichtung 11 bzw. des Abgasturboladers und zur Abgasnachbehandlung nutzbar ist. According to the invention, the motor vehicle has an auxiliary internal combustion engine 10 , which can be used to drive the device 11 or the exhaust-gas turbocharger and for exhaust-gas aftertreatment.

Abgase der Hilfsbrennkraftmaschine 10 können über Kanäle 18, 19 strömungstechnisch wahlweise vor oder nach der als Abgasturbolader ausgebildeten Vorrichtung 11 einem Abgaskanal 20 der Hauptbrennkraftmaschine 17 zugeführt werden. In den Kanälen 18, 19 sind als Ventile ausgebildete Steuermittel 13, 14 vorgesehen, über die die Abgase der Hilfsbrennkraftmaschine 10 steuerbar sind. Exhaust gases of the auxiliary internal combustion engine 10 can be fed via channels 18 , 19, either upstream or downstream of the device 11 designed as exhaust gas turbocharger, to an exhaust gas channel 20 of the main internal combustion engine 17 . In the channels 18 , 19 designed as valves control means 13 , 14 are provided, via which the exhaust gases of the auxiliary internal combustion engine 10 are controllable.

In einer Kaltstartphase ist das Steuermittel 13 geschlossen und das Steuermittel 14 ist geöffnet. Sämtliche Abgase der Hilfsbrennkraftmaschine 10 werden unmittelbar zur Aufheizung eines Katalysators 12 genutzt. Die vorteilhaft als Einzylindermaschine ausgebildete Hilfsbrennkraftmaschine 10 läuft dabei in ihrem wirkungsgradoptimalen Betriebsbereich hoher Last. Ist die Kaltstartphase beendet, wird das Steuermittel 14 geschlossen und das Steuermittel 13 geöffnet. Sämtliche Abgase der Hilfsbrennkraftmaschine 10 werden unmittelbar der als Abgasturbolader ausgeführten Vorrichtung 11 zugeführt, und zwar zur Unterstützung eines Hochlaufs der Vorrichtung 11 bzw. zur Vermeidung eines sogenannten Turbolochs. In a cold start phase, the control means 13 is closed and the control means 14 is opened. All exhaust gases of the auxiliary internal combustion engine 10 are used directly for heating a catalytic converter 12 . The advantageously designed as a single-cylinder engine auxiliary internal combustion engine 10 runs in its efficiency-optimal operating range of high load. If the cold start phase is ended, the control means 14 is closed and the control means 13 is opened. All exhaust gases of the auxiliary internal combustion engine 10 are supplied directly to the device 11 designed as an exhaust-gas turbocharger, specifically to support a run-up of the device 11 or to avoid a so-called turbo lag.

Die Hilfsbrennkraftmaschine 10 ist ferner mit bordeigenen Maschinen verbunden, und zwar über eine Welle 21 mit einem Generator 15 zur Versorgung eines Bordnetzes und über die Welle 21 und über ein Zahnradpaar 22 mit einer Eingangswelle 23 eines Kompressors 16 einer nicht näher dargestellten Klimaanlage. The auxiliary internal combustion engine 10 is further connected to onboard machines, via a shaft 21 with a generator 15 for supplying an electrical system and via the shaft 21 and a gear pair 22 with an input shaft 23 of a compressor 16 of an air conditioner, not shown.

Die Hilfsbrennkraftmaschine 10 wird unter anderem aktiviert, wenn ein Ladezustand eines Bordnetzspeichers unter einen definierten Grenzwert fällt. Die Hilfsbrennkraftmaschine 10 kann deaktiviert werden, wenn kein Antrieb der Vorrichtung 11 sowie keine Aufheizung des Katalysators 12 erforderlich ist und wenn der Ladezustand des Bordnetzspeichers einen definierten Wert erreicht hat oder kann innerhalb ihres wirkungsgradoptimierten Betriebsbereichs mit niedriger Last weiterlaufen, um einen aktuellen Bedarf an elektrischer Energie des Kraftfahrzeugs abzudecken. The auxiliary internal combustion engine 10 is activated inter alia when a state of charge of a vehicle electrical system storage falls below a defined limit. The auxiliary internal combustion engine 10 can be deactivated when no drive of the device 11 and no heating of the catalyst 12 is required and when the state of charge of the on-board storage has reached a defined value or can run within their efficiency-optimized operating range with low load to a current need for electrical energy of the motor vehicle.

Claims (10)

1. Kraftfahrzeug mit wenigstens einer Hauptbrennkraftmaschine für einen Kraftfahrzeugantrieb und mit einer Vorrichtung zur Ladedruckerhöhung der Hauptbrennkraftmaschine, gekennzeichnet durch zumindest eine Hilfsbrennkraftmaschine (10), die zum Antrieb der Vorrichtung (11) zur Ladedruckerhöhung und/oder zur Abgasnachbehandlung nutzbar ist. 1. Motor vehicle with at least one main internal combustion engine for a motor vehicle drive and with a device for boost pressure increase of the main engine, characterized by at least one auxiliary internal combustion engine ( 10 ) which is used to drive the device ( 11 ) for boost pressure increase and / or exhaust gas aftertreatment. 2. Kraftfahrzeug nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung (11) zur Ladedruckerhöhung von einem Abgasturbolader gebildet ist. 2. Motor vehicle according to claim 1, characterized in that the device ( 11 ) is formed for boost pressure increase of an exhaust gas turbocharger. 3. Kraftfahrzeug nach Anspruch 2, dadurch gekennzeichnet, daß Abgase der Hilfsbrennkraftmaschine (10) in zumindest einer Betriebsphase dem Abgasturbolader zugeführt und für einen Hochlauf des Abgasturboladers nutzbar sind. 3. Motor vehicle according to claim 2, characterized in that exhaust gases of the auxiliary internal combustion engine ( 10 ) are supplied to the exhaust gas turbocharger in at least one operating phase and can be used for a run-up of the exhaust gas turbocharger. 4. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Abgase der Hilfsbrennkraftmaschine (10) in zumindest einer Betriebsphase zumindest einem Katalysator (12) zugeführt und zur Aufheizung des Katalysators (12) nutzbar sind. 4. Motor vehicle according to one of the preceding claims, characterized in that exhaust gases of the auxiliary internal combustion engine ( 10 ) in at least one operating phase at least one catalyst ( 12 ) supplied and for heating the catalyst ( 12 ) are usable. 5. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Abgase der Hilfsbrennkraftmaschine in zumindest einer Betriebsphase zumindest einem Partikelfilter zugeführt und zur Regeneration des Partikelfilters nutzbar sind. 5. Motor vehicle according to one of the preceding claims, characterized, that exhaust gases of the auxiliary internal combustion engine in at least one Operating phase supplied to at least one particulate filter and the Regeneration of the particulate filter can be used. 6. Kraftfahrzeug nach Anspruch 4 oder 5 und Anspruch 2, dadurch gekennzeichnet, daß die Abgase der Hilfsbrennkraftmaschine (10) in zumindest einer Betriebsphase strömungstechnisch nach dem Abgasturbolader und vor dem Katalysator (12) oder dem Partikelfilter zugeführt sind. 6. Motor vehicle according to claim 4 or 5 and claim 2, characterized in that the exhaust gases of the auxiliary internal combustion engine ( 10 ) in at least one operating phase are fluidly fed to the exhaust gas turbocharger and before the catalyst ( 12 ) or the particulate filter. 7. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Abgase der Hilfsbrennkraftmaschine (10) mit zumindest einem Steuermittel (13, 14) steuerbar sind. 7. Motor vehicle according to one of the preceding claims, characterized in that exhaust gases of the auxiliary internal combustion engine ( 10 ) with at least one control means ( 13 , 14 ) are controllable. 8. Kraftfahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Hilfsbrennkraftmaschine (10) mit zumindest einer bordeigenen Maschine in Wirkverbindung steht. 8. Motor vehicle according to one of the preceding claims, characterized in that the auxiliary internal combustion engine ( 10 ) is in operative connection with at least one onboard machine. 9. Kraftfahrzeug nach Anspruch 8, dadurch gekennzeichnet, daß die Hilfsbrennkraftmaschine (10) mit einem Generator (15) zur Versorgung eines Bordnetzes in Wirkverbindung steht. 9. Motor vehicle according to claim 8, characterized in that the auxiliary internal combustion engine ( 10 ) with a generator ( 15 ) for supplying an electrical system is in operative connection. 10. Kraftfahrzeug nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß die Hilfsbrennkraftmaschine (10) mit wenigstens einem Kompressor (16) in Wirkverbindung steht. 10. Motor vehicle according to claim 8 or 9, characterized in that the auxiliary internal combustion engine ( 10 ) with at least one compressor ( 16 ) is in operative connection.
DE10221563A 2002-05-15 2002-05-15 Motor vehicle with main IC engine and auxiliary IC engine to operate turbocharger, to improve performance and increase environmental friendliness Withdrawn DE10221563A1 (en)

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DE10221563A DE10221563A1 (en) 2002-05-15 2002-05-15 Motor vehicle with main IC engine and auxiliary IC engine to operate turbocharger, to improve performance and increase environmental friendliness

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DE10221563A1 true DE10221563A1 (en) 2003-11-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025282A1 (en) * 2007-05-30 2008-12-04 Voith Patent Gmbh turbocharger
DE102009033519A1 (en) 2009-07-15 2010-11-11 Voith Patent Gmbh Drive train for use in commercial motor vehicle, has conveyor i.e. displacer supercharger, provided for conveying supply air to internal combustion engine, where conveyor is coupled to drive with gear unit of turbo compound system
DE102012003324A1 (en) 2011-03-15 2012-09-20 Keymount GmbH Drive unit for operating vehicle, has electric motor that drives displacement compressor for loading air in internal combustion engine, and gear box which provides variable output speeds

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DE1751686A1 (en) * 1967-07-26 1971-08-05 Jean Roche Motor vehicle, in particular for transport purposes
EP0235390B1 (en) * 1986-02-27 1989-03-15 BBC Brown Boveri AG Marine diesel engine assembly
EP0718482A1 (en) * 1994-12-22 1996-06-26 Kanesaka Gijyutsu Kenkyusho Ltd. Engine system
DE19639146C1 (en) * 1996-09-24 1997-11-06 Daimler Benz Ag IC engine with exhaust gas turbo system and incorporating catalyser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751686A1 (en) * 1967-07-26 1971-08-05 Jean Roche Motor vehicle, in particular for transport purposes
EP0235390B1 (en) * 1986-02-27 1989-03-15 BBC Brown Boveri AG Marine diesel engine assembly
EP0718482A1 (en) * 1994-12-22 1996-06-26 Kanesaka Gijyutsu Kenkyusho Ltd. Engine system
DE19639146C1 (en) * 1996-09-24 1997-11-06 Daimler Benz Ag IC engine with exhaust gas turbo system and incorporating catalyser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025282A1 (en) * 2007-05-30 2008-12-04 Voith Patent Gmbh turbocharger
DE102009033519A1 (en) 2009-07-15 2010-11-11 Voith Patent Gmbh Drive train for use in commercial motor vehicle, has conveyor i.e. displacer supercharger, provided for conveying supply air to internal combustion engine, where conveyor is coupled to drive with gear unit of turbo compound system
DE102012003324A1 (en) 2011-03-15 2012-09-20 Keymount GmbH Drive unit for operating vehicle, has electric motor that drives displacement compressor for loading air in internal combustion engine, and gear box which provides variable output speeds

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