DE10356806A1 - Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine - Google Patents
Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine Download PDFInfo
- Publication number
- DE10356806A1 DE10356806A1 DE10356806A DE10356806A DE10356806A1 DE 10356806 A1 DE10356806 A1 DE 10356806A1 DE 10356806 A DE10356806 A DE 10356806A DE 10356806 A DE10356806 A DE 10356806A DE 10356806 A1 DE10356806 A1 DE 10356806A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- residual gas
- motor vehicle
- combustion chambers
- fuel cells
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/03—Adding water into the cylinder or the pre-combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
- F02M25/0222—Water recovery or 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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
Die Erfindung betrifft ein Kraftfahrzeug und ein Verfahren zum Betreiben eines Kraftfahrzeugs gemäß dem Oberbegriff der Patentansprüche 1 bzw. 8.The The invention relates to a motor vehicle and a method of operation of a motor vehicle according to the preamble of the claims 1 or 8.
Aus
der Zeitschrift "Energie" Jahrgang 1992, Heft
6, Seite 34 und Heft 7, Seite 42 sowie aus der
Kraftfahrzeuge,
die mit einem auch als Auxiliary Power Unit (APU) bezeichneten Stromaggregat ausgestattet
sind, das ein Brennstoffzellensystem mit einem Brennstoffzellenstapel
umfasst, sind bereits an sich bekannt, beispielsweise aus der
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, ein Kraftfahrzeug und ein Verfahren der eingangs genannten Art dahingehend zu verbessern, dass das in die Brennräume des Verbrennungsmotors zugeführte Wasser ohne eine regelmäßige Betankung des Kraftfahrzeugs mit entmineralisiertem Wasser und ohne die Gefahr von Korrosionserscheinungen oder Ablagerungen in den Brennräumen bereitgestellt werden kann.outgoing This is the object of the invention, a motor vehicle and to improve a method of the type mentioned in the introduction, that in the combustion chambers supplied to the internal combustion engine Water without regular refueling of the motor vehicle with demineralised water and without the risk provided by corrosion phenomena or deposits in the combustion chambers can be.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das in die Brennräume zugeführte Wasser aus Brennstoffzellen eines zur Stromerzeugung dienenden Brennstoffzellensystems des Kraftfahrzeugs stammt. Der Erfindung liegt der Gedanke zugrunde, das bei der Stromerzeugung im Brennstoffzellensystem anfallende unbelastete und pH-neutrale Wasser zur Schadstoffminderung in die Brennräume des Verbrennungsmotors zuzuführen.These Task is inventively characterized solved, that in the combustion chambers supplied water from fuel cells of a power generation fuel cell system of the motor vehicle. The invention is based on the idea the resulting in the generation of electricity in the fuel cell system unloaded and pH neutral Water for pollutant reduction in the combustion chambers of the internal combustion engine supply.
Da das aus den Brennstoffzellen stammende Wasser in Form von Wasserdampf als Bestandteil des Kathodenrestgases und des Anodenrestgases aus dem Brennstoffzellenstapel austritt und in dieser Form und Zusammensetzung nicht ohne weiteres zum Verbrennungsmotor zugeführt werden kann, wird es gemäß einer bevorzugten Ausgestaltung der Erfindung durch Abkühlung verflüssigt und in einem Abscheider von den gasförmigen Bestandteilen des Kathodenrestgases und des Anodenrestgases getrennt, um es dann in flüssiger Form zum Verbrennungsmotor zu transportieren.There the water originating from the fuel cells in the form of water vapor as part of the cathode remainder gas and the anode remainder gas the fuel cell stack exits and in this form and composition It can not be readily supplied to the internal combustion engine, it is according to a preferred embodiment of the invention liquefied by cooling and in a separator of the gaseous Components of the cathode remainder gas and the anode remainder gas are separated to liquidify it then Shape to transport the internal combustion engine.
Da die bei der Stromerzeugung anfallende Wassermenge nicht konstant ist, so dass eine direkte Zufuhr in die Brennräume zu Schwankungen der zugeführten Wassermenge führen würde, sieht eine weitere bevorzugte Ausgestaltung der Erfindung vor, das verflüssigte Wasser in einem Speichertank zwischenzuspeichern, aus dem bedarfsabhängig die benötigte Wassermenge entnommen und in die Brennräume des Verbrennungsmotors zugeführt werden kann.There the amount of water generated during power generation is not constant is, allowing a direct feed into the combustion chambers to fluctuations in the amount of water supplied to lead would, provides a further preferred embodiment of the invention, the liquefied Catch water in a storage tank, from the demand-dependent the needed Water quantity removed and into the combustion chambers of the internal combustion engine supplied can be.
Die Zufuhreinrichtung umfasst vorzugsweise eine Injektoreinrichtung zum dosierten Einspritzen von flüssigem Wasser in die Brennräume, kann jedoch alternativ auch eine Einrichtung zum dosierten Zuführen von verdampftem Wasser in die Brennräume umfassen.The Supply means preferably comprises an injector device for the metered injection of liquid Water in the combustion chambers, However, alternatively, a means for metered feeding of evaporated water in the combustion chambers include.
Bei einem Einsatz des erfindungsgemäßen Verfahrens in einem Kraftfahrzeug mit einem Ottomotor und einem Abgasturbolader sieht eine weitere bevorzugte Ausgestaltung der Erfindung vor, dass das Wasser während einer Beschleunigungsphase des Kraftfahrzeugs in die Brennräume des Verbrennungsmotors zugeführt wird, um durch die Verdampfung des zugeführten Wassers das Abgasvolumen während der Beschleunigungsphase und damit den Abgasvolumenstrom zur Turbine des Abgasturboladers zu erhöhen. Dadurch kann in diesem transienten Beschleunigungszustand des Kraftfahrzeugs das Problem eines verzögerten Ansprechens des Turboladers beseitigt werden, da die Anlaufgeschwindigkeit des Turboladers in direkter Beziehung mit dem durch den Turbolader geleiteten Abgasvolumen steht.at an application of the method according to the invention in a motor vehicle with a gasoline engine and an exhaust gas turbocharger provides a further preferred embodiment of the invention that the Water while an acceleration phase of the motor vehicle in the combustion chambers of Internal combustion engine supplied is to by the evaporation of the supplied water, the exhaust gas volume during the Acceleration phase and thus the exhaust gas flow to the turbine to increase the exhaust gas turbocharger. As a result, in this transient acceleration state of the motor vehicle the problem of a delayed Response of the turbocharger be eliminated because the startup speed of the turbocharger in direct relation with that through the turbocharger guided exhaust gas volume is.
Gemäß einer weiteren bevorzugten Ausgestaltung der Erfindung kann das Wasser auch in denjenigen Betriebszuständen des Kraftfahrzeugs in die Brennräume des Verbrennungsmotors zugeführt werden, in denen der Saugdruck des Turboladers über dem Umgebungsdruck liegt. Während eine Wasserzufuhr bei einem unterhalb des Umgebungsdrucks liegenden Saugdruck eine Minderung der Abgasemissionen bewirkt, hat eine Wasserzufuhr bei einem über dem Umgebungsdruck liegenden Saugdruck eine Optimierung der Verbrennung zur Folge. Zum einen wird nämlich durch eine solche dynamische Wassereinspritzung ein größerer Abgasvolumenstrom zur Turbine des Abgasturboladers zugeführt, wodurch der von der Turbine erzeugte Ladedruck steigt. Zum anderen kann durch die zusätzliche Kühlung der Ansaugluft infolge der Wassereinspritzung die Klopfneigung des Motors verringert werden, was wiederum zu einer Erhöhung seines Wirkungsgrades führt, der bei klopfender Verbrennung nicht optimal ist.According to one Another preferred embodiment of the invention, the water also in those operating states of the motor vehicle in the combustion chambers be supplied to the internal combustion engine, in which the suction pressure of the turbocharger is above the ambient pressure. While a water supply at a lying below the ambient pressure Suction pressure causes a reduction in exhaust emissions, has a water supply at one over the ambient pressure suction pressure optimization of combustion result. For one thing is by such a dynamic water injection a larger exhaust gas volume flow supplied to the turbine of the exhaust gas turbocharger, whereby the turbine generated boost pressure increases. On the other hand, the additional cooling of the Intake air due to the water injection the knock tendency of the engine be reduced, which in turn leads to an increase in its efficiency leads, which is not optimal with knocking combustion.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:The The invention is described below with reference to a in the drawing in schematic Way illustrated embodiment explained in more detail. It shows:
Das
in der Zeichnung schematisch dargestellte Kraftfahrzeug
Der
Verbrennungsmotor
Der
Verbrennungsmotor
Die
Wassereinspritzanlage
Das
Brennstoffzellensystem
Jede
der Brennstoffzellen
In
den Brennstoffzellen
Das
aus den Anodenräumen
Das übrige Anodenrestgas
kann zur Nutzung des noch darin enthaltenen Wasserstoffs zum Beispiel
in den Reformer
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10356806A DE10356806A1 (en) | 2003-12-05 | 2003-12-05 | Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10356806A DE10356806A1 (en) | 2003-12-05 | 2003-12-05 | Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10356806A1 true DE10356806A1 (en) | 2005-07-07 |
Family
ID=34638363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10356806A Ceased DE10356806A1 (en) | 2003-12-05 | 2003-12-05 | Vehicle with combustion engine whereby water from fuel cells is fed into the combustion chamber of the engine |
Country Status (1)
Country | Link |
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DE (1) | DE10356806A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109356750A (en) * | 2018-11-10 | 2019-02-19 | 天津大学 | A method of the fuel cell coupling engine water spray for passenger car |
CN109630292A (en) * | 2018-11-10 | 2019-04-16 | 天津大学 | A method of the fuel cell coupling engine water spray for commercial vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19912778A1 (en) * | 1999-03-12 | 1999-09-02 | Struck | IC engine performance improvement using a steam zone method |
EP1060942A2 (en) * | 1999-06-19 | 2000-12-20 | DaimlerChrysler AG | Vehicle having an internal combustion drive engine and comprising a fuel cell arrangement for the supply of current meeting the electrical requirements of the vehicle and method for operating such a vehicle |
WO2003008780A1 (en) * | 2001-06-14 | 2003-01-30 | Wartsila Nederland B.V. | Combined fuel cell - piston engine plant and method of operating a combined fuel cell - piston engine plant |
US6637382B1 (en) * | 2002-09-11 | 2003-10-28 | Ford Global Technologies, Llc | Turbocharger system for diesel engine |
-
2003
- 2003-12-05 DE DE10356806A patent/DE10356806A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19912778A1 (en) * | 1999-03-12 | 1999-09-02 | Struck | IC engine performance improvement using a steam zone method |
EP1060942A2 (en) * | 1999-06-19 | 2000-12-20 | DaimlerChrysler AG | Vehicle having an internal combustion drive engine and comprising a fuel cell arrangement for the supply of current meeting the electrical requirements of the vehicle and method for operating such a vehicle |
WO2003008780A1 (en) * | 2001-06-14 | 2003-01-30 | Wartsila Nederland B.V. | Combined fuel cell - piston engine plant and method of operating a combined fuel cell - piston engine plant |
US6637382B1 (en) * | 2002-09-11 | 2003-10-28 | Ford Global Technologies, Llc | Turbocharger system for diesel engine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109356750A (en) * | 2018-11-10 | 2019-02-19 | 天津大学 | A method of the fuel cell coupling engine water spray for passenger car |
CN109630292A (en) * | 2018-11-10 | 2019-04-16 | 天津大学 | A method of the fuel cell coupling engine water spray for commercial vehicle |
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Legal Events
Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |