EP1041268B1 - Combustion engine and its method of operating - Google Patents
Combustion engine and its method of operating Download PDFInfo
- Publication number
- EP1041268B1 EP1041268B1 EP00100869A EP00100869A EP1041268B1 EP 1041268 B1 EP1041268 B1 EP 1041268B1 EP 00100869 A EP00100869 A EP 00100869A EP 00100869 A EP00100869 A EP 00100869A EP 1041268 B1 EP1041268 B1 EP 1041268B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- water
- exhaust
- cooling water
- heat exchanger
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- 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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using 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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P2011/205—Indicating devices; Other safety devices using heat-accumulators
-
- 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
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/16—Outlet manifold
-
- 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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
- F02M26/43—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
Definitions
- the invention relates to an internal combustion engine with a cooling water heat accumulator and an exhaust gas recirculation with cooled in an exhaust gas heat exchanger Exhaust gas and a work process that can be carried out with it.
- the components required in each case namely the cooling water heat accumulator and the heat exchanger of the exhaust gas recirculation, are very large-volume components which, in particular in the case of smaller vehicles, can be accommodated in an engine compartment and applied to the engine only with great design effort.
- Another disadvantage is that each individual component has a weight that cannot be neglected.
- the object of the invention is to provide an internal combustion engine which allows the use of a cooling water heat accumulator and an exhaust gas heat exchanger even in a confined space with a considerably smaller space requirement and weight. Furthermore, a more efficient working method of an internal combustion engine is to be made available.
- Cooling water heat accumulator of the storage heat exchanger arranged a valve which that coming from the cooling water outlet of the internal combustion engine Cooling water flow can enter the cooling water inlet of the cooling water heat accumulator or bypasses it through the storage heat exchanger.
- the advantage of this is that the amount of water to be heated first inside Cooling circuit is significantly reduced, so that the internal combustion engine faster can approach their optimal operating temperature.
- the Valve in front of the cooling water heat accumulator of the storage heat exchanger is closed, can recirculated exhaust gas through the exhaust gas heat exchanger of the storage heat exchanger are passed through to the intake manifold and cools due to of the cold water located in the storage heat exchanger, it being advantageous heated.
- the time from which exhaust gases are led through the cooling water heat accumulator and in what amount is preferably arranged in the exhaust gas stream Valve regulated.
- An embodiment of the inventive is also of particular importance Internal combustion engine, in which the cooling water heat accumulator of the storage heat exchanger is provided with an additional vent closure, so that it is in a third function can also serve as an expansion tank for the cooling water, so that this, as a separately executed component, can also be dispensed with and that Additional weight of the integrated cooling water heat accumulator with exhaust gas heat exchanger by saving the own weight of the expansion tank with filling, about 3 kg a small vehicle that can be fully compensated.
- the heat exchanger which is heat-insulated from the outside, before the start of the Internal combustion engine is still filled with hot cooling water from the last engine run, is immediately after starting the engine by a in front of the cooling water heat accumulator arranged valve is opened briefly and the hot cooling water in it against cold cooling water from the internal cooling circuit of the internal combustion engine exchanged, after which the valve closes and the cooling water flow through one Bypass past the storage heat exchanger until it reaches a minimum operating temperature has reached, from which the valve the flow of cooling water through the cooling water heat accumulator of the storage heat exchanger releases again.
- the cold cooling water heats up in the cooling water heat accumulator through the recirculated exhaust gas and the cooling water in the internal cooling circuit Internal combustion engine, the temperature difference between cooling water and Exhaust gas always remains so large that the exhaust gas is cooled even when the valve is open remains guaranteed.
- a partial flow of the exhaust gas 9 is branched off via an exhaust gas recirculation valve 14 and passed through an exhaust gas heat exchanger 4 of a storage heat exchanger 1 integrated in a cooling water heat accumulator 2 and then passed through an exhaust gas recirculation line 10 to a suction pipe 15, where it is supplied with fresh air 8 mixed is fed back to the combustion process.
- the cooling water conveyed out of the internal combustion engine 11 flows through a cooling water drain line 5 to a valve 3, which is arranged in front of the cooling water heat accumulator 2 of the storage heat exchanger 1 and which either guides the cooling water flow through the cooling water heat accumulator 2 or via a cooling water Bypass 6 bypasses the storage heat exchanger 1.
- the cooling water flows through a heating heat exchanger 16 and is then fed back to the internal combustion engine 11.
- the storage heat exchanger 1 is additionally provided with a vent lock 17 equipped so that it can also serve as a surge tank.
Abstract
Description
Die Erfindung betrifft eine Verbrennungskraftmaschine mit einem Kühlwasser-Wärmespeicher und einer Abgasrückführung mit in einem Abgas-Wärmetauscher gekühltem Abgas sowie ein damit durchführbares Arbeitsverfahren.The invention relates to an internal combustion engine with a cooling water heat accumulator and an exhaust gas recirculation with cooled in an exhaust gas heat exchanger Exhaust gas and a work process that can be carried out with it.
Es ist bekannt einen Teil eines Abgasstromes einer Verbrennungskraftmaschine gekühlt dem
Verbrennungsprozeß wieder zuzuführen, DE 196 29 015 C 2, welches eine bewährte Methode
darstellt, die Stickoxyd-Werte im Abgasstrom zu reduzieren sowie eine effizientere
Verbrennung herbeizuführen um damit Kraftstoff einzusparen. Weiterhin sind Kühlwasser-Wärmespeicher
bekannt, die nach dem Prinzip einer Thermoskanne ausgebildet sind und die
dazu dienen, das von der letzten Fahrt stammende heiße Kühlwasser warm zu halten, um es
zu Beginn der nächsten Fahrt gegen das kalte Wasser im Motorblock bzw. des inneren
Kühlkreislaufes der Verbrennungskraftmaschine auszutauschen und so die Kaltstartphase des
Motors zu verkürzen bzw. einen Warmstart des Motors zu gewährleisten.It is known to cool part of an exhaust gas stream of an internal combustion engine
Feed the combustion process again, DE 196 29 015
Die jeweils benötigten Bauteile, nämlich der Kühlwasser-Wärmespeicher und der
Wärmetauscher der Abgasrückführung sind sehr großvolumige Bauteile, die insbesondere bei
kleineren Fahrzeugen nur unter hohem konstruktiven Aufwand in einem Motorraum
untergebracht und am Motor appliziert werden können. Nachteilig ist weiterhin, daß jedes
einzelne Bauteil ein nicht zu vernachlässigendes Eigengewicht besitzt.
Aufgabe der Erfindung ist es, eine Verbrennungskraftmaschine zur Verfügung zu stellen,
welche bei einem erheblich geringeren Platzbedarf und Eigengewicht den Einsatz eines
Kühlwasser-Wärmespeichers und eines Abgas-Wärmetauschers auch auf engem Raum
ermöglicht. Weiterhin soll ein effizienteres Arbeitsverfahren einer
Verbrennungskraftmaschine zur Verfügung gestellt werden. The components required in each case, namely the cooling water heat accumulator and the heat exchanger of the exhaust gas recirculation, are very large-volume components which, in particular in the case of smaller vehicles, can be accommodated in an engine compartment and applied to the engine only with great design effort. Another disadvantage is that each individual component has a weight that cannot be neglected.
The object of the invention is to provide an internal combustion engine which allows the use of a cooling water heat accumulator and an exhaust gas heat exchanger even in a confined space with a considerably smaller space requirement and weight. Furthermore, a more efficient working method of an internal combustion engine is to be made available.
Die Lösung dieser Aufgabe wird in Verbindung mit den Oberbegriffsmerkmalen erfindungsgemäß durch die im kennzeichnenden Teil des Hauptanspruches angegebene technische Lehre vermittelt. Dadurch, daß ein Kühlwasser-Wärmespeicher und ein Abgas-Wärmetauscher für in den Verbrennungsprozeß gekühlt zurückzuführendes Abgas in einem gemeinsamen Speicher-Wärmetauscher integriert sind, wobei das Kühlwasser das Kühlmedium für das Abgas liefert, erübrigt sich ein separates Bauteil, da durch die vorhandenen Temperaturdifferenzen zwischen Kühlwasser und Abgas, welches in der Regel sehr viel heißer ist als das Kühlwasser, der Kühlwasser-Wärmespeicher gleichzeitig als Abgas-Wärmetauscher fungieren kann. Weiterhin wird durch den Wegfall eines separaten Bauteils nicht nur Bauvolumen im Motorraum eingespart, sondern auch eine erhebliche Gewichtsreduzierung erzielt.The solution to this problem is in connection with the generic features according to the invention specified in the characterizing part of the main claim teaches technical teaching. The fact that a cooling water heat accumulator and an exhaust gas heat exchanger for exhaust gas to be returned cooled in the combustion process in one common storage heat exchanger are integrated, the cooling water Cooling medium for the exhaust gas supplies, a separate component is unnecessary, as through the existing temperature differences between cooling water and exhaust gas, which is usually is much hotter than the cooling water, the cooling water heat storage at the same time as Exhaust gas heat exchanger can act. Furthermore, by eliminating a separate Component not only saved construction volume in the engine compartment, but also considerable Weight reduction achieved.
Weitere vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous refinements of the subject matter of the invention result from the Dependent claims.
Gemäß einer besonders bevorzugten Ausführungsform der Erfindung ist vor dem Kühlwasser-Wärmespeicher des Speicher-Wärmetauschers ein Ventil angeordnet, welches den aus dem Kühlwasseraustritt der Verbrennungskraftmaschine kommenden Kühlwasserstrom in den Kühlwasser-Eintritt des Kühlwasser-Wärmespeichers eintreten läßt oder diesen durch einen Bypass am Speicher-Wärmetauscher vorbei leitet. Mit Hilfe dieses Ventiles ist es möglich, bei einem Kaltstart einer Verbrennungskraftmaschine das in dem Kühlwasser-Wärmespeicher befindliche heiße Kühlwasser des letzten Motorlaufes in den inneren Kühlkreislauf der Verbrennungskraftmaschine umzupumpen, wonach das kalte Kühlwasser aus dem Motorblock so lange im Kühlwasser-Wärmespeicher zwischengelagert wird, bis eine Mindestbetriebstemperatur der Verbrennungskraftmaschine erreicht ist, wonach dieses Ventil wieder öffnet, so daß das im Kühlwasser-Wärmespeicher befindliche kalte Kühlwasser wieder am Kreislauf des inneren Kühlkreises teilnehmen kann, bis dieser seine Betriebstemperatur erreicht hat, wonach überschüssige Wärme im äußeren Kühlkreislauf an die Umgebung abgegeben wird.According to a particularly preferred embodiment of the invention is before Cooling water heat accumulator of the storage heat exchanger arranged a valve which that coming from the cooling water outlet of the internal combustion engine Cooling water flow can enter the cooling water inlet of the cooling water heat accumulator or bypasses it through the storage heat exchanger. With the help of this Valves, it is possible in a cold start of an internal combustion engine in the Cooling water heat storage located hot cooling water from the last engine run in the pump around the internal cooling circuit of the internal combustion engine, after which the cold Cooling water from the engine block is temporarily stored in the cooling water heat accumulator until a minimum operating temperature of the internal combustion engine is reached after which this valve opens again, so that is located in the cooling water heat accumulator cold cooling water can participate in the circuit of the inner cooling circuit again until this has reached its operating temperature, after which excess heat in the outside Cooling circuit is released to the environment.
Vorteilhaft hieran ist, daß die zunächst zu erwärmende Wassermenge im inneren Kühlkreislauf deutlich herabgesetzt ist, so daß sich die Verbrennungskraftmaschine schneller ihrer optimalen Betriebstemperatur annähern kann. Bereits während dieser Phase, in der das Ventil vor dem Kühlwasser-Wärmespeicher des Speicher-Wärmetauschers geschlossen ist, kann zurückgeführtes Abgas durch den Abgas-Wärmetauscher des Speicher-Wärmetauschers hindurch zum Saugrohr hindurchgeführt werden und kühlt sich aufgrund des im Speicher-Wärmetauscher befindlichen kalten Wassers ab, wobei es dieses vorteilhaft erwärmt. Der Zeitpunkt, ab dem Abgase durch den Kühlwasser-Wärmespeicher geführt werden und in welcher Menge, wird bevorzugt von einem im Abgasstrom angeordneten Ventil geregelt.The advantage of this is that the amount of water to be heated first inside Cooling circuit is significantly reduced, so that the internal combustion engine faster can approach their optimal operating temperature. Already during this phase, in which the Valve in front of the cooling water heat accumulator of the storage heat exchanger is closed, can recirculated exhaust gas through the exhaust gas heat exchanger of the storage heat exchanger are passed through to the intake manifold and cools due to of the cold water located in the storage heat exchanger, it being advantageous heated. The time from which exhaust gases are led through the cooling water heat accumulator and in what amount is preferably arranged in the exhaust gas stream Valve regulated.
Von besonderer Bedeutung ist weiterhin eine Ausführungsform der erfinderischen Verbrennungskraftmaschine, bei dem der Kühlwasser-Wärmespeicher des Speicher-Wärmetauschers mit einem zusätzlichen Entlüftungsverschluß versehen ist, so daß er in einer dritten Funktion auch als Ausgleichsbehälter für das Kühlwasser dienen kann, so daß auf diesen, als separat ausgeführtes Bauteil, ebenfalls verzichtet werden kann und das Zusatzgewicht des integrierten Kühlwasser-Wärmespeichers mit Abgas-Wärmetauscher durch Einsparung des Eigengewichts des Ausgleichsbehälters mit Füllung, etwa 3 kg bei einem kleinen Fahrzeug, vollständig kompensiert werden kann.An embodiment of the inventive is also of particular importance Internal combustion engine, in which the cooling water heat accumulator of the storage heat exchanger is provided with an additional vent closure, so that it is in a third function can also serve as an expansion tank for the cooling water, so that this, as a separately executed component, can also be dispensed with and that Additional weight of the integrated cooling water heat accumulator with exhaust gas heat exchanger by saving the own weight of the expansion tank with filling, about 3 kg a small vehicle that can be fully compensated.
Diese Zusammenfassung zweier oder dreier Bauteile liefert demnach als Vorteil einen geringeren Platzbedarf, Gewichtseinsparung sowie wesentliche Kostenvorteile, da die Gesamtkosten eines kombinierten Bauteiles inklusive der Montagekosten günstiger ausfallen als bei zwei oder drei separaten Bauteilen. Weiterhin ist ein solcher kombinierter Speicher-Wärmetauscher sowohl für Otto- als auch für Dieselmotoren geeignet und faßt die Vorteile eines Kühlwasser-Wärmespeichers, oder auch Latent-Wärmespeichers, mit den Vorteilen einer gekühlten Abgasrückführung zusammen.This combination of two or three components therefore provides one advantage less space, weight saving and significant cost advantages, because the Total costs of a combined component, including assembly costs, turn out to be cheaper than with two or three separate components. Furthermore, such a combined storage heat exchanger Suitable for both petrol and diesel engines and summarizes the advantages a cooling water heat storage, or latent heat storage, with the advantages a cooled exhaust gas recirculation.
Die Arbeitsschritte des erfinderischen Arbeitsverfahrens werden im folgenden erläutert:The working steps of the inventive working method are explained in the following:
Der nach außen wärmeisolierte Speicher-Wärmetauscher, der vor einem Start der Verbrennungskraftmaschine noch mit heißem Kühlwasser des letzten Motorlaufes gefüllt ist, wird unmittelbar nach dem Motorstart durch ein vor dem Kühlwasser-Wärmespeicher angeordnetes Ventil kurzzeitig geöffnet und das darin befindliche heiße Kühlwasser gegen kaltes Kühlwasser aus dem inneren Kühlkreislauf der Verbrennungskraftmaschine ausgetauscht, wonach das Ventil schließt und den Kühlwasserstrom so lange durch einen Bypass am Speicher-Wärmetauscher vorbeiführt, bis es eine Mindestbetriebstemperatur erreicht hat, ab der das Ventil den Durchfluß des Kühlwassers durch den Kühlwasser-Wärmespeicher des Speicher-Wärmetauschers wieder freigibt. Kurz nach dem Start der Verbrennungskraftmaschine wird deren Abgas bereits durch den Abgas-Wärmetauscher im Kühlwasser-Wärmespeicher geleitet, wobei das darin befindliche ausgetauschte kalte Kühlwasser aus dem inneren Kühlkreislauf die Abgase herunterkühlt, die anschließend im Saugrohr mit Frischluft vermischt und dann wieder dem Verbrennungsprozeß zugeführt werden.The heat exchanger, which is heat-insulated from the outside, before the start of the Internal combustion engine is still filled with hot cooling water from the last engine run, is immediately after starting the engine by a in front of the cooling water heat accumulator arranged valve is opened briefly and the hot cooling water in it against cold cooling water from the internal cooling circuit of the internal combustion engine exchanged, after which the valve closes and the cooling water flow through one Bypass past the storage heat exchanger until it reaches a minimum operating temperature has reached, from which the valve the flow of cooling water through the cooling water heat accumulator of the storage heat exchanger releases again. Shortly after the start of the Internal combustion engine is already the exhaust gas through the exhaust gas heat exchanger in the Cooling water heat accumulator directed, the exchanged cold inside Cooling water from the internal cooling circuit cools the exhaust gases, which are then in the Intake pipe mixed with fresh air and then fed back to the combustion process become.
Im Laufe des Betriebes erhitzt sich das kalte Kühlwasser im Kühlwasser-Wärmespeicher durch das rückgeführte Abgas sowie das Kühlwasser im inneren Kühlkreislauf der Verbrennungskraftmaschine, wobei die Temperaturdifferenz zwischen Kühlwasser und Abgas stets so groß bleibt, daß auch bei geöffnetem Ventil die Kühlung des Abgases gewährleistet bleibt.In the course of operation, the cold cooling water heats up in the cooling water heat accumulator through the recirculated exhaust gas and the cooling water in the internal cooling circuit Internal combustion engine, the temperature difference between cooling water and Exhaust gas always remains so large that the exhaust gas is cooled even when the valve is open remains guaranteed.
Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben.
- Fig. 1
- zeigt eine schematische Darstellung der Verbrennungskraftmaschine mit einem aus einem Kühlwasser-Wärmespeicher und einem Abgas-Wärmetauscher kombinierten Speicher-Wärmetauscher in einer denkbaren Einbaulage.
- Fig. 1
- shows a schematic representation of the internal combustion engine with a combination of a cooling water heat accumulator and an exhaust gas heat exchanger storage heat exchanger in a conceivable installation position.
Aus der Verbrennungskraftmaschine 11 wird ein Teilstrom des Abgases 9 über ein
Abgasrückführventil 14 abgezweigt und durch einen in einem Kühlwasser-Wärmespeicher 2
integrierten Abgas-Wärmetauscher 4 eines Speicher-Wärmetauschers 1 geleitet und
anschließend durch eine Abgasrückführleitung 10 einem Saugrohr 15 zugeleitet, wo es mit
Frischluft 8 gemischt dem Verbrennungsprozeß wieder zugeführt wird.
Das aus der Verbrennungskraftmaschine 11 herausgeförderte Kühlwasser strömt durch eine
Kühlwasser-Abflußleitung 5 zu einem Ventil 3, welches vor dem Kühlwasser-Wärmespeicher
2 des Speicher-Wärmetauschers 1 angeordnet ist und welches den Kühlwasserstrom
entweder durch den Kühlwasser-Wärmespeicher 2 führt oder über einen Kühlwasser-Bypass
6 an dem Speicher-Wärmetauscher 1 vorbeileitet.From the
The cooling water conveyed out of the
Im Anschluß daran strömt das Kühlwasser durch einen Heizungs-Wärmetauscher 16 und
wird anschließend wieder der Verbrennungskraftmaschine 11 zugeführt. Following this, the cooling water flows through a
Der Speicher-Wärmetauscher 1 ist zusätzlich mit einem Entlüftungsverschluß 17
ausgestattet, so daß er gleichzeitig als Ausgleichsbehälter dienen kann. The
- 1.1.
- Speicher-WärmetauscherStorage heat exchanger
- 2.Second
- Kühlwasser-WärmespeicherCoolant heat storage
- 3.Third
- VentilValve
- 4.4th
- Abgas-WärmetauscherExhaust gas heat exchanger
- 5.5th
- Kühlwasser-AbflußleitungCooling water discharge duct
- 6.6th
- Kühlwasser-BypassCooling water bypass
- 7.7th
- Kühlwasser-RückflußleitungCooling water return line
- 8.8th.
- Frischluftfresh air
- 9.9th
- Abgasexhaust
- 10.10th
- AbgasrückführleitungExhaust gas recirculation line
- 11.11th
- VerbrennungskraftmaschineInternal combustion engine
- 12.12th
- KühlwasseraustrittCooling water outlet
- 13.13th
- Kühlwasser-EintrittCooling water inlet
- 14.14th
- AbgasrückführventilExhaust gas recirculation valve
- 15.15th
- Saugrohrsuction tube
- 16.16th
- Heizungheater
- 17.17th
- Entlüftungsverschlußventing closure
Claims (6)
- Internal combustion engine having a cooling-water heat store and exhaust-gas recirculation with exhaust gas cooled by an exhaust-gas heat exchanger, characterized in that a cooling-water heat store (2) and an exhaust-gas heat exchanger (4) for exhaust gas to be fed back into the combustion process are combined in a storage heat exchanger (1) and the cooling water forms the cooling medium for the exhaust-gas heat exchanger (4).
- Internal combustion engine according to Claim 1, characterized in that a valve (3) is arranged upstream of the cooling-water heat store (2) of the storage heat exchanger (1) and can be used to introduce cooling water emerging from a cooling-water outlet (12) of the internal combustion engine (11) into a cooling-water inlet (13) of the cooling-water heat store (2) or to divert cooling water into a cooling-water bypass (6) around the storage heat exchanger (1).
- Internal combustion engine according to Claim 1, characterized in that an exhaust-gas recirculation valve (14) is arranged in the exhaust-gas flow downstream of the internal combustion engine (11) and can be used to partially divert said flow into the exhaust-gas heat exchanger (4) of the storage heat exchanger (1).
- Internal combustion engine according to Claim 1, characterized in that the cooling-water heat store (2) of the storage heat exchanger (1) is provided with a venting closure (17) and is designed as an equalizing tank for the cooling water.
- Operating method of an internal combustion engine having a cooling-water heat store and exhaust-gas recirculation with cooled exhaust gas, characterized in that, when the internal combustion engine (11) is started, a valve (3) arranged upstream of the cooling-water heat store (2) is briefly switched in such a manner that hot cooling water which has been stored in the cooling-water heat store (2) and is from the last engine operation is exchanged for cold cooling water from an inner cooling circuit of the internal combustion engine (11), and, shortly after the start, the exhaust gas (9) is guided through an exhaust-gas heat exchanger (4) integrated in the cooling-water heat store (2), the exhaust gas (9) first of all heating the cold cooling water in the cooling-water heat store (2) and in the process being cooled itself, and in that, subsequently, when a minimum operating temperature of the cooling water of the inner cooling circuit is reached, the valve (3) is switched in such a manner that the cooling water is conducted through the cooling-water heat store (2) and in the process the exhaust gas (9) is cooled.
- Operating method according to Claim 5, characterized in that, after the cold cooling water from the inner cooling circuit of the internal combustion engine (11) has been exchanged for the still hot cooling water from the cooling-water heat store (2), the valve (3) is switched in such a manner that the cooling water of the internal combustion engine (11) is first of all guided through a bypass (6) until a minimum operating temperature of the cooling water in the inner cooling circuit is reached.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914438A DE19914438A1 (en) | 1999-03-30 | 1999-03-30 | Internal combustion engine and working method of an internal combustion engine |
| DE19914438 | 1999-03-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1041268A2 EP1041268A2 (en) | 2000-10-04 |
| EP1041268A3 EP1041268A3 (en) | 2001-03-07 |
| EP1041268B1 true EP1041268B1 (en) | 2004-06-02 |
Family
ID=7902970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00100869A Expired - Lifetime EP1041268B1 (en) | 1999-03-30 | 2000-01-18 | Combustion engine and its method of operating |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1041268B1 (en) |
| AT (1) | ATE268433T1 (en) |
| CA (1) | CA2301982A1 (en) |
| DE (2) | DE19914438A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006032852A1 (en) * | 2006-07-14 | 2008-01-17 | Bayerische Motoren Werke Ag | Automotive engine water cooling system has temperature equalization tank with integral heat exchanger |
| CN105102783A (en) * | 2013-04-18 | 2015-11-25 | 丰田自动车株式会社 | Heat transfer apparatus |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2823704B1 (en) * | 2001-04-20 | 2003-07-04 | Renault | THERMAL MANAGEMENT DEVICE OF A MOTOR VEHICLE |
| DE10340908A1 (en) * | 2003-09-05 | 2005-03-31 | Daimlerchrysler Ag | Internal combustion engine for motor vehicles |
| FR2873758B1 (en) * | 2004-08-02 | 2010-10-08 | Renault Sas | MOTOR VEHICLE POWERTRAIN COMPRISING AN EXHAUST GAS RECIRCULATION CIRCUIT |
| DE102008038629B4 (en) * | 2008-08-12 | 2019-12-05 | Mahle International Gmbh | Exhaust gas cooler for a motor vehicle |
| CN102808679A (en) * | 2011-05-30 | 2012-12-05 | 上海汽车集团股份有限公司 | Heat management method and system of engine |
| CN102536582A (en) * | 2012-01-13 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Preheating device of engine |
| CN103061947B (en) * | 2012-12-28 | 2015-12-09 | 浙江大学宁波理工学院 | Engine cold-start Preheating unit |
| FR3004495A3 (en) * | 2013-04-12 | 2014-10-17 | Renault Sa | DEVICE FOR COOLING A GAS RECIRCULATION LOOP IN A VEHICLE ENGINE |
| CN103790682A (en) * | 2013-09-17 | 2014-05-14 | 黑龙江省康格尔科技有限公司 | Energy-saving preheating system of vehicular engine |
| DE102013222557A1 (en) * | 2013-11-06 | 2015-05-07 | MAHLE Behr GmbH & Co. KG | Coolant circuit of an internal combustion engine |
| FR3013764A1 (en) * | 2013-11-27 | 2015-05-29 | Peugeot Citroen Automobiles Sa | COOLING CIRCUIT OF AN INTERNAL COMBUSTION ENGINE. |
| US10316801B2 (en) * | 2017-01-16 | 2019-06-11 | Ford Global Technologies, Llc | Method and system for an exhaust heat exchanger |
| DE102018209238B4 (en) * | 2018-06-11 | 2021-12-30 | Ford Global Technologies, Llc | Turbocharged internal combustion engine with exhaust gas recirculation and method for operating such an internal combustion engine |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE585910C (en) * | 1931-12-18 | 1933-10-12 | Max Groeck | Heating device for the cooling water circuit of internal combustion engines |
| US1892571A (en) * | 1932-03-31 | 1932-12-27 | Goodwin Robert Blythe | Device for heating automobile motors |
| DE819334C (en) * | 1948-10-02 | 1951-10-31 | Buessing Nutzkraftwagen G M B | Device for heat storage for motor vehicles using the exhaust gases from the drive motor |
| US4055158A (en) * | 1974-04-08 | 1977-10-25 | Ethyl Corporation | Exhaust recirculation |
| DE7435061U (en) * | 1974-10-19 | 1975-05-28 | Kotulla M | Water-cooled internal combustion engine |
| DK147207C (en) * | 1981-10-29 | 1984-11-05 | Niels Thure Hallin | REFRIGERATOR ENGINE COOLING COOLING SYSTEM |
| US5407130A (en) * | 1993-07-20 | 1995-04-18 | Honda Giken Kogyo Kabushiki Kaisha | Motor vehicle heat storage device with coolant bypass |
| ES2173412T3 (en) * | 1996-06-22 | 2002-10-16 | Mahle Filtersysteme Gmbh | CAR THAT CAN BE DRIVEN THROUGH AN INTERNAL COMBUSTION ENGINE. |
| DE19629015C2 (en) * | 1996-07-18 | 1998-07-02 | Mtu Friedrichshafen Gmbh | Device and method for cooling an exhaust gas stream of an internal combustion engine and its use |
| US6123144A (en) * | 1997-04-15 | 2000-09-26 | Cummins Engine Company, Inc. | Integrated heat exchanger and expansion tank |
| DE19722256C1 (en) * | 1997-05-28 | 1998-10-01 | Daimler Benz Ag | Heat exchanger for a water-cooled internal combustion engine |
| DE19750721A1 (en) * | 1997-11-15 | 1999-05-20 | Volkswagen Ag | Engine coolant circuit for IC engine |
| DE29722813U1 (en) * | 1997-12-24 | 1999-04-22 | Behr Thermot Tronik Gmbh & Co | Exhaust gas recirculation device for an internal combustion engine of a motor vehicle |
-
1999
- 1999-03-30 DE DE19914438A patent/DE19914438A1/en not_active Withdrawn
-
2000
- 2000-01-18 AT AT00100869T patent/ATE268433T1/en not_active IP Right Cessation
- 2000-01-18 EP EP00100869A patent/EP1041268B1/en not_active Expired - Lifetime
- 2000-01-18 DE DE50006644T patent/DE50006644D1/en not_active Expired - Lifetime
- 2000-03-22 CA CA002301982A patent/CA2301982A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006032852A1 (en) * | 2006-07-14 | 2008-01-17 | Bayerische Motoren Werke Ag | Automotive engine water cooling system has temperature equalization tank with integral heat exchanger |
| CN105102783A (en) * | 2013-04-18 | 2015-11-25 | 丰田自动车株式会社 | Heat transfer apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE268433T1 (en) | 2004-06-15 |
| EP1041268A3 (en) | 2001-03-07 |
| EP1041268A2 (en) | 2000-10-04 |
| DE50006644D1 (en) | 2004-07-08 |
| DE19914438A1 (en) | 2000-10-05 |
| CA2301982A1 (en) | 2000-09-30 |
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