DE102018129956B4 - Pipe for injecting water into an internal combustion engine, motor vehicle with and use of such a line - Google Patents

Pipe for injecting water into an internal combustion engine, motor vehicle with and use of such a line Download PDF

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DE102018129956B4
DE102018129956B4 DE102018129956.7A DE102018129956A DE102018129956B4 DE 102018129956 B4 DE102018129956 B4 DE 102018129956B4 DE 102018129956 A DE102018129956 A DE 102018129956A DE 102018129956 B4 DE102018129956 B4 DE 102018129956B4
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internal combustion
combustion engine
water
line
motor vehicle
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DE102018129956A1 (en
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Jan Kirschbaum
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
    • F01P9/02—Cooling by evaporation, e.g. by spraying water on to cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • F16L9/19—Multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for 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
    • 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

Die Erfindung stellt eine Leitung zum Einspritzen von Wasser in eine Verbrennungskraftmaschine mit den folgenden Merkmalen bereit: ein Innenrohr (11) zum Führen des einzuspritzenden Wassers, einen Vorlauf (12) zum Führen von Kühlwasser der Verbrennungskraftmaschine entlang des Innenrohres (11) und einen Rücklauf (13) zum Rückführen des Kühlwassers zur Verbrennungskraftmaschine.Die Erfindung stellt ferner ein Kraftfahrzeug mit einer solchen Leitung sowie ein Verwendungsverfahren für selbige Leitung bereit.The invention provides a line for injecting water into an internal combustion engine with the following features: an inner tube (11) for guiding the water to be injected, a flow (12) for guiding cooling water of the internal combustion engine along the inner tube (11) and a return ( 13) for returning the cooling water to the internal combustion engine. The invention further provides a motor vehicle with such a line and a method for using the same line.

Description

Die vorliegende Erfindung betrifft eine Leitung zum Einspritzen von Wasser in eine Verbrennungskraftmaschine. Die vorliegende Erfindung betrifft darüber hinaus ein Kraftfahrzeug mit einer solchen Leitung sowie ein Verwendungsverfahren für selbige Leitung.The present invention relates to a line for injecting water into an internal combustion engine. The present invention also relates to a motor vehicle with such a line and a method for using the same line.

Stand der TechnikState of the art

In der Einspritztechnik ist die Wassereinspritzung als ein Verfahren zur Senkung der Ansauglufttemperatur von Verbrennungskraftmaschinen bekannt. Sie wird zur Leistungssteigerung (sogenanntes Downsizing oder Tuning), zur Senkung von Emissionen oder des Kraftstoffverbrauchs eingesetzt. Um etwa die Maximaltemperatur eines etwaigen Katalysators bei Höchstleistung nicht zu überschreiten, wird hierbei Wasser in den Ansaugtrakt oder Brennraum eines Kolbenmotors oder eines Verdichters einer Gasturbine eingespritzt.In injection technology, water injection is known as a method for lowering the intake air temperature of internal combustion engines. It is used to increase performance (so-called downsizing or tuning), to reduce emissions or fuel consumption. In order not to exceed the maximum temperature of a possible catalytic converter at maximum output, water is injected into the intake tract or combustion chamber of a piston engine or a compressor of a gas turbine.

Bei Ottomotoren wird durch Einspritzung von Wasser in die Ansaugbrücke die Ansauglufttemperatur signifikant gesenkt, was sich wiederum direkt auf die Abgastemperatur auswirkt. Mitunter wird auch ein Wasser-Benzin-Gemisch direkt in den Brennraum eingespritzt und kann die Temperatur der Zylinderladung auf diese Weise ebenfalls deutlich senken. Die solchermaßen verminderte Temperatur ermöglicht ein stöchiometrisches Kraftstoffgemisch, womit der Katalysator in seinem Arbeitsbereich bleibt. Ebenso sinkt der Kraftstoffverbrauch, da das Gemisch nicht mehr mit überschüssigem Benzin angereichert werden muss. Durch die verschobene Klopfgrenze kann die Verdichtung erhöht werden, was eine Leistungssteigerung oder weitere Verbrauchsreduzierung ermöglicht. Automobilhersteller nutzen eine Wassereinspritzung bei Motoren zunehmend auch zur Verringerung der Emissionen in bestimmten Lastfällen. In petrol engines, the intake air temperature is significantly reduced by injecting water into the intake manifold, which in turn has a direct effect on the exhaust gas temperature. Sometimes a water-gasoline mixture is injected directly into the combustion chamber and can also significantly lower the temperature of the cylinder charge in this way. The temperature reduced in this way enables a stoichiometric fuel mixture, which keeps the catalytic converter in its working range. Fuel consumption also drops because the mixture no longer has to be enriched with excess petrol. The shifted knock limit can increase the compression, which enables an increase in performance or a further reduction in consumption. Car manufacturers are increasingly using water injection for engines to reduce emissions in certain load cases.

Eine Herausforderung liegt in der Gefahr, dass ein im Kraftfahrzeug mitgeführter Wassertank für die Wassereinspritzung in den Motor bei Temperaturen unter 0 °C einfrieren kann. Da in der Regel keine Additive gegen Einfrieren zugeführt werden dürfen, ist ein entsprechendes System daher derart auszulegen, dass alle notwendigen Teile, in denen Wasser geführt wird, beheizt werden. Zum Zwecke der Leitungsheizung mittels Kühlwassers wurde etwa vorgeschlagen, die Leitung in einer Richtung mit dem Kühlwasser zu durchströmen. Dies jedoch birgt den Nachteil, dass das Kühlwasser über eine separate Leitung wieder zurückgeführt werden muss.One challenge is the risk that a water tank carried in the motor vehicle for water injection into the engine can freeze at temperatures below 0 ° C. Since, as a rule, no additives to prevent freezing may be added, a corresponding system must therefore be designed in such a way that all necessary parts in which water is conducted are heated. For the purpose of line heating by means of cooling water, it has been proposed, for example, that the cooling water flow through the line in one direction. However, this has the disadvantage that the cooling water has to be returned via a separate line.

DE 10 2014 222 461 A1 offenbart den Gegenstand des Oberbegriffs von Anspruch 1. DE 10 2014 222 461 A1 discloses the subject of the preamble of claim 1.

DE 10 2007 000 526 A1 offenbart eine Leitung zum Einspritzen von Harnstofflösung in eine Brennkraftmaschine. DE 10 2007 000 526 A1 discloses a line for injecting urea solution into an internal combustion engine.

DE 10 2016 211 826 A1 stellt fest, die Problematik des Einfrierens bei einer Leitung zum Einspritzen von Wasser entspräche jener bei einer Leitung zum Einspritzen wässriger Harnstofflösung in eine Verbrennungskraftmaschine. DE 10 2016 211 826 A1 notes that the problem of freezing in a line for injecting water corresponds to that in a line for injecting aqueous urea solution into an internal combustion engine.

Offenbarung der ErfindungDisclosure of the invention

Die Erfindung stellt eine Leitung zum Einspritzen von Wasser in eine Verbrennungskraftmaschine, ein Kraftfahrzeug mit einer solchen Leitung sowie ein Verwendungsverfahren für selbige Leitung gemäß den unabhängigen Ansprüchen bereit.The invention provides a line for injecting water into an internal combustion engine, a motor vehicle with such a line and a method of using the same line according to the independent claims.

Ein Vorzug dieser Lösung liegt darin, dass der Kühlwasservorlauf und Kühlwasserrücklauf innerhalb einer Leitung realisiert sind.One advantage of this solution is that the cooling water supply and cooling water return are implemented within one line.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.Further advantageous refinements of the invention are specified in the dependent claims.

FigurenlisteFigure list

Ausführungsbeispiele sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.

  • 1 zeigt den Querschnitt einer Leitung gemäß einer ersten Variante.
  • 2 zeigt den Querschnitt der Leitung gemäß einer zweiten Variante.
Exemplary embodiments are shown in the drawings and are described in more detail below.
  • 1 shows the cross section of a line according to a first variant.
  • 2nd shows the cross section of the line according to a second variant.

AusführungsformenEmbodiments

1 illustriert eine erfindungsgemäße Leitung (10) zum Einspritzen von Wasser in eine - in ihrer Gesamtheit nicht dargestellte - Verbrennungskraftmaschine. Die vorliegende Leitung (10) umfasst ein zylindrisches Innenrohr (11), welches das einzuspritzende Wasser führt, einen Vorlauf (12), welcher das Kühlwasser der Verbrennungskraftmaschine entlang des Innenrohres (11) führt, sowie einen Rücklauf (13), welcher das Kühlwasser zur Verbrennungskraftmaschine zurückführt. Vorlauf (12) und Rücklauf (13) sind hierbei jeweils derart halbhohlzylindrisch geformt, dass sie einander zu einem das Innenrohr (11) umschließenden Hohlzylinder ergänzen. 1 illustrates a line according to the invention ( 10th ) for injecting water into an internal combustion engine (not shown in its entirety). The present management ( 10th ) includes a cylindrical inner tube ( 11 ), which carries the water to be injected, a flow ( 12 ), which the cooling water of the internal combustion engine along the inner tube ( 11 ) leads, as well as a return ( 13 ), which returns the cooling water to the internal combustion engine. Leader ( 12 ) and return ( 13 ) are each shaped semi-hollow cylindrical so that they form the inner tube ( 11 ) complete the surrounding hollow cylinder.

2 beleuchtet eine Abwandlung dieser Geometrie. Vorlauf (12) und Rücklauf (13) sind hier jeweils hohlzylindrisch, wobei der Vorlauf (12) das Innenrohr (11) vollumfänglich umschließt. Der Rücklauf (13) wiederum umschließt den Vorlauf (12) vollumfänglich, sodass Innenrohr (11), Vorlauf (12) und Rücklauf (13) koaxial zueinander verlaufen. 2nd illuminates a modification of this geometry. Leader ( 12 ) and return ( 13 ) are each hollow cylindrical, with the lead ( 12 ) the inner tube ( 11 ) completely encloses. The return ( 13 ) in turn encloses the lead ( 12 ) in full, so that the inner tube ( 11 ), Leader ( 12 ) and return ( 13 ) run coaxially to each other.

Claims (5)

Leitung (10) zum Einspritzen von Wasser in eine Verbrennungskraftmaschine, mit folgenden Merkmalen: - ein zylindrisches Innenrohr (11) zum Führen des einzuspritzenden Wassers, - einen Vorlauf (12) zum Führen von Kühlwasser der Verbrennungskraftmaschine entlang des Innenrohres (11) und - einen Rücklauf (13) zum Rückführen des Kühlwassers zur Verbrennungskraftmaschine, gekennzeichnet durch folgendes Merkmal: - der Vorlauf (12) und der Rücklauf (13) sind halbhohlzylindrisch.Line (10) for injecting water into an internal combustion engine, with the following features: - a cylindrical inner tube (11) for guiding the water to be injected, - a flow (12) for guiding cooling water of the internal combustion engine along the inner tube (11) and - one Return (13) for returning the cooling water to the internal combustion engine, characterized by the following feature: - The flow (12) and the return (13) are semi-hollow cylindrical. Leitung (10) nach Anspruch 1, gekennzeichnet durch folgendes Merkmal: - der Vorlauf (12) und der Rücklauf (13) ergänzen einander zu einem das Innenrohr (11) umschließenden Hohlzylinder.Line (10) after Claim 1 , characterized by the following feature: - the flow (12) and the return (13) complement each other to form a hollow cylinder surrounding the inner tube (11). Kraftfahrzeug, gekennzeichnet durch folgende Merkmale: - das Kraftfahrzeug umfasst eine Verbrennungskraftmaschine, einen Kühlwasserkreislauf zum Kühlen der Verbrennungskraftmaschine und eine Leitung (10) nach einem der Ansprüche 1 oder 2, - der Vorlauf (12) und der Rücklauf (13) sind fluidisch in den Kühlwasserkreislauf eingebunden und - das Innenrohr (11) ist fluidisch an die Verbrennungskraftmaschine angebunden.Motor vehicle, characterized by the following features: - The motor vehicle comprises an internal combustion engine, a cooling water circuit for cooling the internal combustion engine and a line (10) according to one of the Claims 1 or 2nd , - The flow (12) and the return (13) are fluidly integrated into the cooling water circuit and - The inner tube (11) is fluidly connected to the internal combustion engine. Kraftfahrzeug nach Anspruch 3, gekennzeichnet durch folgende Merkmale: - das Kraftfahrzeug umfasst ferner einen Wassertank und - das Innenrohr (11) verbindet fluidisch den Wassertank mit der Verbrennungskraftmaschine.Motor vehicle after Claim 3 , characterized by the following features: - the motor vehicle further comprises a water tank and - the inner tube (11) fluidly connects the water tank to the internal combustion engine. Verwendung einer Leitung (10) nach einem der Ansprüche 1 oder 2, gekennzeichnet durch mindestens eines der folgenden Merkmale: - der Vorlauf (12) und Rücklauf (13) heizen das Wasser derart, dass das Wasser nicht gefriert, wenn die Verbrennungskraftmaschine betrieben wird und - der Vorlauf (12) und Rücklauf (13) heizen das Wasser derart, dass das Wasser auftaut, wenn die Verbrennungskraftmaschine startet.Use of a line (10) according to one of the Claims 1 or 2nd , characterized by at least one of the following features: - the flow (12) and return (13) heat the water in such a way that the water does not freeze when the internal combustion engine is operated and - the flow (12) and return (13) heat it Water such that the water thaws when the internal combustion engine starts.
DE102018129956.7A 2018-11-27 2018-11-27 Pipe for injecting water into an internal combustion engine, motor vehicle with and use of such a line Active DE102018129956B4 (en)

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CN116045299B (en) * 2023-02-08 2023-10-31 华能临沂发电有限公司 Flue gas cooling device
CN116696528B (en) * 2023-08-09 2023-11-17 潍柴动力股份有限公司 Aftertreatment system, vehicle, and vehicle control method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000526A1 (en) 2006-10-19 2008-04-24 Denso Corp., Kariya Exhaust gas purification device for an engine
DE102014222461A1 (en) 2014-11-04 2016-05-04 Bayerische Motoren Werke Aktiengesellschaft Combustion engine, water injection of an internal combustion engine and method for operating an internal combustion engine
DE102016211826A1 (en) 2016-06-30 2018-01-04 Continental Automotive Gmbh Dosing device for dosing a reducing agent liquid and method for operating a dosing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000526A1 (en) 2006-10-19 2008-04-24 Denso Corp., Kariya Exhaust gas purification device for an engine
DE102014222461A1 (en) 2014-11-04 2016-05-04 Bayerische Motoren Werke Aktiengesellschaft Combustion engine, water injection of an internal combustion engine and method for operating an internal combustion engine
DE102016211826A1 (en) 2016-06-30 2018-01-04 Continental Automotive Gmbh Dosing device for dosing a reducing agent liquid and method for operating a dosing device

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