EP1591639A1 - Method for producing an internal combustion engine - Google Patents
Method for producing an internal combustion engine Download PDFInfo
- Publication number
- EP1591639A1 EP1591639A1 EP04101829A EP04101829A EP1591639A1 EP 1591639 A1 EP1591639 A1 EP 1591639A1 EP 04101829 A EP04101829 A EP 04101829A EP 04101829 A EP04101829 A EP 04101829A EP 1591639 A1 EP1591639 A1 EP 1591639A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant channel
- internal combustion
- combustion engine
- insulation layer
- insulating layer
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
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- 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
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
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- 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
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
Definitions
- the invention relates to a method for producing an internal combustion engine with at least one cylinder liner of at least one coolant channel is surrounded, wherein the coolant channel to its outside a Insulation layer is assigned. But the invention also relates to a Internal combustion engine with at least one cylinder liner of at least a coolant channel is surrounded, wherein the coolant channel an insulation layer is assigned to its outer sides.
- the Internal combustion engines are used in motor vehicles.
- the Internal combustion engines usually have a cylinder block with one or several cylinder liners and a cylinder block associated Cylinder head up.
- the cylinder block or the cylinder head is usually casting technology of aluminum or other suitable cast materials such.
- JP 2001-020738 relates to a cooling device for an internal combustion engine.
- the Cooling device has a water jacket, which has an internal heat insulation includes.
- the cooling device has such a structure that a coolant a outer wall surface of a cylinder liner contacted.
- An inner surface of the Water jacket, not the outer wall surface of the cylinder liner, is of the Insulation material covered.
- the insulation material is with a cylinder head gasket connected.
- JP 2001-020738 As a major disadvantage of JP 2001-020738 is to be considered that the insulation material is inserted into the water jacket. This is only for so-called “open-deck” variants possible and can not with so-called “closed deck” variants or Cylinder heads are also used there because of existing webs Insertion is impossible. In addition, by pushing coolant behind get the insulation layer, whereby the insulation effect significantly reduced would.
- DE 199 35 335 A1 relates to an encapsulation for internal combustion engines, in which as the material for the encapsulation polyurethane foam is used. This is the internal combustion engine with an insulating layer on its outer walls Provided.
- US 5,115,771 relates to a cooling system for cylinder liners in an engine.
- the cooling system comprises a cylinder liner which is housed in a cylinder block is arranged and a thermal insulation channel in an upper area the cylinder block is introduced and spaced from the cylinder liner. As a result, the temperature of the wall surface of the cylinder liner at the increased upper range.
- a coolant jacket is inserted in the cylinder block to to surround an area of the cylinder liner.
- the coolant jacket has a Coolant inlet, which is arranged at a lower portion of the cylinder liner and a coolant outlet located on an upper side of the Cylinder liner is arranged.
- a cylinder block construction In US 6,101,994 a cylinder block construction is disclosed.
- the cylinder block construction comprises a cylinder block and a plurality of cylinder bores in the Cylinder block are introduced, with intermediate areas between each adjacent cylinder bores are formed.
- a water jacket is in the Cylinder block introduced to surround the plurality of cylinder bores.
- a plurality of oil passages are in the cylinder block outside the water jacket introduced to allow oil from the cylinder head through it can fall to a crankcase. The majority of oil shafts are between adjacent intermediate edge regions generally along the cooling jacket brought in.
- a cylinder block for an internal combustion engine has a twin cylinder bushing containing metal.
- the Twin cylinder bushing has a radially outwardly directed, round Flange approach, spaced but adjacent to the bottom of the Twin cylinder socket is.
- the cylinder block has a surrounding sheath spaced apart from around the flange unit Twin cylinder bushing, wherein the shell and the flange unit with each other are shed.
- the jacket is made of molded fiber-reinforced plastic, which is essentially due to the thermal expansion properties of Cylinder sleeve unit is adapted.
- GB 1,561,638 relates to a liquid cooling system of an internal combustion engine, in which seawater as a liquid coolant through a cooling space of the engine is passed and surrounds a cylinder liner.
- a heat transfer retarder (Heat insulator) is provided, which is a thermally insulating socket comprising between the outer surface of the cylinder liner and the Refrigerator is arranged.
- the invention is based on the object, an internal combustion engine of the above mentioned type with simple means to improve, so that this after a Cold start is faster to a required operating temperature.
- the object is achieved in that the insulating layer at least partially on inner walls of the coolant channel to his Outside sides is introduced, wherein the insulating layer integral with the Coolant channel is formed, so that the insulation layer form-fitting with the Inner wall of the coolant channel is connected.
- the task but also solved in that the insulation layer at least partially an inner wall of the coolant channel to its outer sides so introduced is that the insulating layer is formed integrally with the coolant channel, so that the insulating layer form-fitting with the inner walls of the coolant channel connected is.
- the inventive production and arrangement of the insulating layer be during the cold start or during a warm-up of the Combustion engine advantageous only the inner part of the cylinder block or the Cylinder liner, the cylinder head and the coolant itself warmed up.
- the Outer part of the cylinder block or the cylinder head remains here for a longer time cooler.
- a form-locking connection in the sense of the invention comes about in such a way that For example, in a casting process existing heat the material of Main body (cylinder block or cylinder head) with the material of Insulation layer binds to an intimate unit.
- the wall portion in the Cross-section seen from the cylinder liner is oriented away. One for this opposite inner side is therefore oriented towards the cylinder liner.
- the insulation layer form-fitting with the respective walls is connected, it is therefore advantageously provided that the insulating layer at the same time is produced by casting in the production of the coolant channel.
- the Coolant channel is suitably provided that the insulation layer at its Production is poured directly into this.
- the insulating layer in a production of cores in particular the cores for the formation of the coolant channel is integrated in these.
- the Insulation layer is in this case preferably arranged on the regions of the cores, which should form the outside of the inner wall of the coolant channel.
- the Insulation material is preferably seen in a cross section in one Partial circle portion of the core surface integrated into the core accordingly, so that preferably one half of the inner wall surface has the insulating layer.
- the insulating material seen in cross section also more or less than one half of the coolant channel or even fully cover.
- the insulating material or the insulating layer in the production of Cores, especially sand cores, is already integrated is advantageously achieved that a use of much thinner cores is possible because a minimum thickness the cores are affected by their strength. If additional Insulation material is incorporated into the cores, the core has a higher Strength, so that it can be made much thinner, which significant cost savings are achieved.
- the volume of the insulating layer is preferably about 10 - 50%.
- the Insulation layer may extend over the entire length of the coolant channel. It is also possible, however, that the insulation layer is slightly shorter than the Coolant channel length is.
- the insulating layer consists of ceramic, wherein the Insulation layer also consist of a heat-resistant, synthetic material can.
- the insulating layer directly to the internal combustion engine in particular is poured into its coolant channel
- inventive Method in particular cylinder heads or for example so-called “closed Deck”
- variableants can be made with the insulating layer positive connection of the insulating layer with the inner walls of the Coolant channel to its outsides is also an improved Thermal insulation guaranteed.
- the insulation layer only is provided on the outer sides of the coolant channel, wherein a to Cylinder liner towards arranged region of the inner wall of the coolant channel just does not have this insulation layer, the coolant can in the Cylinder liner absorb heat generated, the insulation layer a Heat transfer to the other cylinder block or cylinder head largely prevented. Further, a heat transfer from the engine to him surrounding ambient air is reduced.
- the inventive method for producing the internal combustion engine and the internal combustion engine according to the invention with the insulating layer is a achieved faster warm up of the internal combustion engine during a cold start. This not only reduces fuel consumption, it also creates it at the same time less pollutant emissions, adding a faster activation (Light-off) of a catalyst is achieved, with the light-off temperature rather is reached. Further, the operating oil is faster to the required Operating temperature led, so that the wear is reduced even in short trips, whereby the internal combustion engine has an increased life.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Verbrennungsmotors mit zumindest einer Zylinderlaufbuchse die von mindestens einem Kühlmittelkanal umgeben ist, wobei dem Kühlmittelkanal zu seiner Außenseite hin eine Isolationsschicht zugeordnet ist. Die Erfindung betrifft aber auch einen Verbrennungsmotor mit zumindest einer Zylinderlaufbuchse die von mindestens einem Kühlmittelkanal umgeben ist, wobei dem Kühlmittelkanal eine Isolationsschicht zu seinen Außenseiten hin zugeordnet ist.The invention relates to a method for producing an internal combustion engine with at least one cylinder liner of at least one coolant channel is surrounded, wherein the coolant channel to its outside a Insulation layer is assigned. But the invention also relates to a Internal combustion engine with at least one cylinder liner of at least a coolant channel is surrounded, wherein the coolant channel an insulation layer is assigned to its outer sides.
Derartige Verbrennungsmotoren werden in Kraftfahrzeugen eingesetzt. Die Verbrennungsmotoren weisen üblicherweise einen Zylinderblock mit einer oder mehreren Zylinderlaufbuchsen sowie einen dem Zylinderblock zugeordneten Zylinderkopf auf. Der Zylinderblock bzw. der Zylinderkopf wird üblicherweise gießtechnisch aus Aluminium oder anderen geeigneten Gußwerkstoffen wie z. B. Grauguß hergestellt. Bekannt ist hierbei, daß ein bzw. mehrere Kerne zur Ausbildung des bzw. der Kühlmittelkanäle vor dem Gießen entsprechend in der Gießform positioniert werden.Such internal combustion engines are used in motor vehicles. The Internal combustion engines usually have a cylinder block with one or several cylinder liners and a cylinder block associated Cylinder head up. The cylinder block or the cylinder head is usually casting technology of aluminum or other suitable cast materials such. B. Cast iron produced. It is known that one or more cores for training the or the coolant channels before casting according to the mold be positioned.
Bei dem Betrieb des Verbrennungsmotors wird Kraftstoff verbraucht. Während eines Kaltstarts ist der Kraftstoffverbrauch typischerweise 10 bis 15 % höher, verglichen mit einem Kraftstoffverbrauch eines Verbrennungsmotors, der sich schon längere Zeit in einem Betriebszustand befindet. Dies ist der sogenannte Aufwärmfaktor (Cold/Hot-Faktor). Der Verbrennungsmotor ist bei einem Kaltstart einer höheren Reibung ausgesetzt, da das kalte Betriebsöl eine wesentlich höhere Viskosität als warmes Betriebsöl aufweist. Insbesondere bei Kraftfahrzeugen, die überwiegend für Kurzstrecken eingesetzt werden, kann der Verbrennungsmotor dabei einem erhöhten Verschleiß ausgesetzt sein, so daß der Verbrennungsmotor eine relativ kurze Lebensdauer bezogen auf seine mögliche Lebensdauer hat. Zudem werden höhere Drosselverluste, insbesondere bei Otto-Motoren, wegen des höheren volumetrischen Wirkungsgrades bei tieferen Temperaturen beobachtet.In the operation of the internal combustion engine fuel is consumed. During one Cold starts, fuel consumption is typically 10 to 15% higher compared with a fuel consumption of an internal combustion engine, which is already longer Time is in an operating state. This is the so-called warm-up factor (Cold / Hot-factor). The combustion engine is at a cold start of a higher Friction exposed because the cold operating oil has a much higher viscosity than has warm operating oil. Especially for motor vehicles, mainly for Short distances can be used, the internal combustion engine thereby increased Be exposed to wear, so that the internal combustion engine is a relatively short Lifespan related to its possible life. In addition, higher Throttling losses, especially in gasoline engines, because of the higher volumetric Efficiency observed at lower temperatures.
Die JP 2001-020738 betrifft eine Kühlvorrichtung für einen Verbrennungsmotor. Die Kühlvorrichtung weist einen Wassermantel auf, der eine innere Wärmeisolierung beinhaltet. Die Kühlvorrichtung hat eine derartige Struktur, daß ein Kühlmittel eine äußere Wandfläche einer Zylinderbuchse kontaktiert. Eine innere Fläche des Wassermantels, nicht die äußere Wandfläche der Zylinderbuchse, wird von dem Isolationsmaterial bedeckt. Das Isolationsmaterial ist mit einer Zylinderkopfdichtung verbunden.JP 2001-020738 relates to a cooling device for an internal combustion engine. The Cooling device has a water jacket, which has an internal heat insulation includes. The cooling device has such a structure that a coolant a outer wall surface of a cylinder liner contacted. An inner surface of the Water jacket, not the outer wall surface of the cylinder liner, is of the Insulation material covered. The insulation material is with a cylinder head gasket connected.
Als ein Hauptnachteil der JP 2001-020738 ist anzusehen, daß das Isolationsmaterial in den Wassermantel eingeschoben wird. Dies ist nur bei sogenannten "open-deck"-Varianten möglich und kann nicht bei sogenannten "closed deck"-Varianten oder auch Zylinderköpfen verwendet werden, da dort wegen vorhandener Stege ein Einschieben unmöglich ist. Zudem könnte durch das Einschieben Kühlmittel hinter die Isolationsschicht gelangen, wodurch die Isolationswirkung deutlich reduziert würde.As a major disadvantage of JP 2001-020738 is to be considered that the insulation material is inserted into the water jacket. This is only for so-called "open-deck" variants possible and can not with so-called "closed deck" variants or Cylinder heads are also used there because of existing webs Insertion is impossible. In addition, by pushing coolant behind get the insulation layer, whereby the insulation effect significantly reduced would.
Die DE 199 35 335 A1 betrifft eine Umkapselung für Verbrennungsmotoren, bei der als Material für die Umkapselung Polyurethanschaum verwendet wird. Hierbei wird der Verbrennungsmotor mit einer Isolationsschicht an seinen Außenwänden versehen.DE 199 35 335 A1 relates to an encapsulation for internal combustion engines, in which as the material for the encapsulation polyurethane foam is used. This is the internal combustion engine with an insulating layer on its outer walls Provided.
Als ein Hauptnachteil der Umkapselung der DE 199 35 335 A1 ist anzusehen, daß durch die außenseitige, separate Isolation des Verbrennungsmotors, insbesondere seines Zylinderblockes sowie des zugeordneten Zylinderkopfes diese zwar relativ schnell aufgewärmt werden, allerdings muß der gesamte Körper (Zylinderblock bzw. Zylinderkopf) vollständig aufgeheizt werden, wodurch wiederum die zuvor genannten Nachteile dennoch beobachtet werden. Zudem läßt sich die Umkapselung äußerst kompliziert und aufwendig an dem Verbrennungsmotor anbringen.As a major disadvantage of the encapsulation of DE 199 35 335 A1 is to be considered that by the outside, separate isolation of the internal combustion engine, in particular his cylinder block and the associated cylinder head while this relatively warmed up quickly, but the entire body (cylinder block or Cylinder head) are completely heated, which in turn the aforementioned Disadvantages can still be observed. In addition, the encapsulation can be extremely complicated and expensive to attach to the engine.
Die US 5,115,771 betrifft ein Kühlsystem für Zylinderlaufbuchsen in einem Motor. Das Kühlsystem umfaßt eine Zylinderlaufbuchse, die in einem Zylinderblock angeordnet ist und einen thermischen Isolationskanal der in einem oberen Bereich des Zylinderblocks eingebracht und zu der Zylinderlaufbuchse beabstandet ist. Hierdurch wird die Temperatur der Wandoberfläche der Zylinderlaufbuchse an dem oberen Bereich erhöht. Ein Kühlmittelmantel ist in dem Zylinderblock eingebracht, um einen Bereich der Zylinderlaufbuchse zu umgeben. Der Kühlmittelmantel weist einen Kühlmitteleingang, der an einem unteren Bereich der Zylinderlaufbuchse angeordnet ist und einen Kühlmittelausgang auf, der an einer oberen Seite der Zylinderlaufbuchse angeordnet ist.US 5,115,771 relates to a cooling system for cylinder liners in an engine. The cooling system comprises a cylinder liner which is housed in a cylinder block is arranged and a thermal insulation channel in an upper area the cylinder block is introduced and spaced from the cylinder liner. As a result, the temperature of the wall surface of the cylinder liner at the increased upper range. A coolant jacket is inserted in the cylinder block to to surround an area of the cylinder liner. The coolant jacket has a Coolant inlet, which is arranged at a lower portion of the cylinder liner and a coolant outlet located on an upper side of the Cylinder liner is arranged.
In der US 6,101,994 ist ein Zylinderblockaufbau offenbart. Der Zylinderblockaufbau umfaßt einen Zylinderblock sowie eine Mehrzahl von Zylinderbohrungen, die in den Zylinderblock eingebracht sind, wobei Zwischenbereiche zwischen jeweils benachbarten Zylinderbohrungen gebildet sind. Ein Wassermantel ist in dem Zylinderblock eingebracht, um die Mehrzahl der Zylinderbohrungen zu umgeben. Eine Mehrzahl von Ölkanälen ist in dem Zylinderblock außerhalb des Wassermantels eingebracht, um zu ermöglichen, daß Öl von dem Zylinderkopf durch diese hindurch zu einem Kurbelgehäuse fallen kann. Die Mehrzahl der Ölschächte ist zwischen benachbarten Zwischenrandbereichen im allgemeinen entlang des Kühlmantels eingebracht.In US 6,101,994 a cylinder block construction is disclosed. The cylinder block construction comprises a cylinder block and a plurality of cylinder bores in the Cylinder block are introduced, with intermediate areas between each adjacent cylinder bores are formed. A water jacket is in the Cylinder block introduced to surround the plurality of cylinder bores. A plurality of oil passages are in the cylinder block outside the water jacket introduced to allow oil from the cylinder head through it can fall to a crankcase. The majority of oil shafts are between adjacent intermediate edge regions generally along the cooling jacket brought in.
In der US 5, 083,537 wird ein Zylinderblock für einen Verbrennungsmotor offenbart. Der Zylinderblock weist eine Zwillingszylinderbuchse auf, die Metall enthält. Die Zwillingszylinderbuchse weist einen radial nach auswärts gerichteten, runden Flanschansatz auf, der beabstandet aber benachbart zum Boden der Zwillingszylinderbuchse ist. Weiter weist der Zylinderblock einen Umgebungsmantel auf, der, außer um die Flanscheinheit herum, beabstandet zur Zwillingszylinderbuchse ist, wobei der Mantel und die Flanscheinheit miteinander vergossen sind. Der Mantel besteht aus gegossenem faserverstärkten Kunststoff, der im Wesentlichen an die thermischen Expansionseigenschaften der Zylinderbuchseneinheit angepaßt ist.In US 5 083 535 a cylinder block for an internal combustion engine is disclosed. The cylinder block has a twin cylinder bushing containing metal. The Twin cylinder bushing has a radially outwardly directed, round Flange approach, spaced but adjacent to the bottom of the Twin cylinder socket is. Next, the cylinder block has a surrounding sheath spaced apart from around the flange unit Twin cylinder bushing, wherein the shell and the flange unit with each other are shed. The jacket is made of molded fiber-reinforced plastic, which is essentially due to the thermal expansion properties of Cylinder sleeve unit is adapted.
In der US 4,596,212 wird ebenfalls ein Verbrennungsmotor offenbart. Dieser weist einen Zylinder zur Verbrennung einer Kraftstoff-Luftmischung auf und umfaßt ein geschlossenes System, das einen Flüssigkeitsmantel beinhaltet, um einer Flüssigkeit zu ermöglichen, daß diese um den Zylinder herum zirkuliert und diesen kühlt. Ein anorganischer, im Wesentlichen flüssigkeits- und dampfundurchlässiger Schaum ist in einem festen Bereich des Flüssigkeitsmantels angeordnet. Die Flüssigkeitskapazität des Flüssigkeitsmantels ist reduziert, ohne die Kühlkapazität des reduzierten Kühlmittels in dem Kühlmittelmantel zu beeinflussen. In US 4,596,212 also an internal combustion engine is disclosed. This one points a cylinder for combustion of a fuel-air mixture and includes a closed system that includes a liquid jacket to a liquid to allow it to circulate around and cool the cylinder. On inorganic, substantially liquid and vapor impermeable foam arranged in a fixed region of the liquid jacket. The Liquid capacity of the liquid jacket is reduced without the cooling capacity of the reduced coolant in the coolant jacket.
Die GB 1,561,638 betrifft ein Flüssigkeitskühlsystem einer Verbrennungsmaschine, in welcher Seewasser als Flüssigkeitskühlmittel durch einen Kühlraum des Motors geleitet wird und eine Zylinderbuchse umgibt. Ein Wärmeübergangsverzögerer (Wärmeisolator) wird zur Verfügung gestellt, der eine thermisch isolierende Buchse umfaßt, die zwischen der äußeren Oberfläche der Zylinderbuchse und dem Kühlraum angeordnet ist.GB 1,561,638 relates to a liquid cooling system of an internal combustion engine, in which seawater as a liquid coolant through a cooling space of the engine is passed and surrounds a cylinder liner. A heat transfer retarder (Heat insulator) is provided, which is a thermally insulating socket comprising between the outer surface of the cylinder liner and the Refrigerator is arranged.
Der Erfindung liegt die Aufgabe zugrunde, einen Verbrennungsmotor der eingangs genannten Art mit einfachen Mitteln zu verbessern, so daß dieser nach einem Kaltstart schneller auf eine erforderliche Betriebstemperatur geführt wird.The invention is based on the object, an internal combustion engine of the above mentioned type with simple means to improve, so that this after a Cold start is faster to a required operating temperature.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die Isolationsschicht zumindest bereichsweise an Innenwänden des Kühlmittelkanals zu seinen Außenseiten hin eingebracht ist, wobei die Isolationsschicht einstückig mit dem Kühlmittelkanal gebildet wird, so daß die Isolationsschicht formschlüssig mit der Innenwand des Kühlmittelkanals verbunden ist. Erfindungsgemäß wird die Aufgabe aber auch dadurch gelöst, daß die Isolationsschicht zumindest bereichsweise an einer Innenwand des Kühlmittelkanals zu seinen Außenseiten hin derart eingebracht ist, daß die Isolationsschicht einstückig mit dem Kühlmittelkanal gebildet ist, so daß die Isolationsschicht formschlüssig mit den Innenwänden des Kühlmittelkanals verbunden ist.According to the invention the object is achieved in that the insulating layer at least partially on inner walls of the coolant channel to his Outside sides is introduced, wherein the insulating layer integral with the Coolant channel is formed, so that the insulation layer form-fitting with the Inner wall of the coolant channel is connected. According to the invention, the task but also solved in that the insulation layer at least partially an inner wall of the coolant channel to its outer sides so introduced is that the insulating layer is formed integrally with the coolant channel, so that the insulating layer form-fitting with the inner walls of the coolant channel connected is.
Durch die erfindungsgemäße Herstellung und Anordnung der Isolationsschicht werden während des Kaltstarts bzw. während einer Aufwärmphase des Verbrennungsmotors vorteilhaft lediglich der innere Teil des Zylinderblockes bzw. der Zylinderlaufbuchse, des Zylinderkopfes und das Kühlmittel selbst aufgewärmt. Der äußere Teil des Zylinderblockes bzw. des Zylinderkopfes bleibt hierbei für eine längere Zeit kühler.By the inventive production and arrangement of the insulating layer be during the cold start or during a warm-up of the Combustion engine advantageous only the inner part of the cylinder block or the Cylinder liner, the cylinder head and the coolant itself warmed up. The Outer part of the cylinder block or the cylinder head remains here for a longer time cooler.
Eine im Sinne der Erfindung formschlüssige Verbindung kommt derart zustande, daß beispielsweise bei einem Gießprozeß vorhandene Wärme den Werkstoff des Grundkörpers (Zylinderblock bzw. Zylinderkopf) mit dem Werkstoff der Isolationsschicht zu einer innigen Einheit bindet. Als Außenseite der Innenwand des Kühlmittelkanals wird im Sinne der Erfindung der Wandabschnitt definiert, der im Querschnitt gesehen von der Zylinderlaufbuchse weg orientiert ist. Eine dazu gegenüberliegende Innenseite ist daher zur Zylinderlaufbuchse hin orientiert.A form-locking connection in the sense of the invention comes about in such a way that For example, in a casting process existing heat the material of Main body (cylinder block or cylinder head) with the material of Insulation layer binds to an intimate unit. As outside of the inner wall of the Coolant channel is defined in the context of the invention, the wall portion in the Cross-section seen from the cylinder liner is oriented away. One for this opposite inner side is therefore oriented towards the cylinder liner.
Um zu erreichen, daß die Isolationsschicht formschlüssig mit den jeweiligen Wänden verbunden ist, ist daher vorteilhaft vorgesehen, daß die Isolationsschicht gleichzeitig bei der Herstellung des Kühlmittelkanals gießtechnisch hergestellt wird.In order to achieve that the insulation layer form-fitting with the respective walls is connected, it is therefore advantageously provided that the insulating layer at the same time is produced by casting in the production of the coolant channel.
Zur Herstellung des erfindungsgemäßen Verbrennungsmotors, insbesondere des Kühlmittelkanals ist zweckmäßig vorgesehen, daß die Isolationsschicht bei dessen Herstellung direkt in diesen eingegossen wird. Hierzu ist es günstig im Sinne der Erfindung, wenn die Isolationsschicht bei einer Fertigung von Kernen, insbesondere der Kerne zur Ausbildung des Kühlmittelkanals in diesen integriert ist. Die Isolationsschicht ist hierbei bevorzugt an den Bereichen der Kerne angeordnet, welche die Außenseite der Innenwand des Kühlmittelkanals bilden sollen. Das Isolationsmaterial ist in einem Querschnitt gesehen vorzugsweise in einem Teilkreisabschnitt der Kernoberfläche entsprechend in dem Kern integriert, so daß vorzugsweise eine Hälfte der Innenwandoberfläche die Isolationsschicht aufweist. Selbstverständlich kann das Isolationsmaterial im Querschnitt gesehen auch mehr oder weniger als eine Hälfte des Kühlmittelkanals oder diesen gar vollumfänglich bedecken.For the production of the internal combustion engine according to the invention, in particular the Coolant channel is suitably provided that the insulation layer at its Production is poured directly into this. For this purpose, it is favorable in terms of Invention, when the insulating layer in a production of cores, in particular the cores for the formation of the coolant channel is integrated in these. The Insulation layer is in this case preferably arranged on the regions of the cores, which should form the outside of the inner wall of the coolant channel. The Insulation material is preferably seen in a cross section in one Partial circle portion of the core surface integrated into the core accordingly, so that preferably one half of the inner wall surface has the insulating layer. Of course, the insulating material seen in cross section also more or less than one half of the coolant channel or even fully cover.
Dadurch, daß das Isolationsmaterial bzw. die Isolationsschicht bei der Fertigung von Kernen, insbesondere Sandkernen, bereits integriert ist, wird vorteilhaft erreicht, daß eine Verwendung wesentlich dünnerer Kerne ermöglicht wird, da eine Mindestdicke der Kerne durch deren Festigkeit beeinflußt wird. Sofern zusätzliches Isolationsmaterial in die Kerne eingearbeitet wird, hat der Kern eine höhere Festigkeit, so daß dieser wesentlich dünner hergestellt werden kann, wodurch erhebliche Kosteneinsparungen erzielt werden. Bezogen auf ein Kernvolumen beträgt das Volumen der Isolationsschicht vorzugsweise ca. 10 - 50 %. Die Isolationsschicht kann sich über die gesamte Länge des Kühlmittelkanals erstrecken. Möglich ist allerdings auch, daß die Isolationsschicht etwas kürzer als die Kühlmittelkanallänge ist. Due to the fact that the insulating material or the insulating layer in the production of Cores, especially sand cores, is already integrated, is advantageously achieved that a use of much thinner cores is possible because a minimum thickness the cores are affected by their strength. If additional Insulation material is incorporated into the cores, the core has a higher Strength, so that it can be made much thinner, which significant cost savings are achieved. Relative to a core volume the volume of the insulating layer is preferably about 10 - 50%. The Insulation layer may extend over the entire length of the coolant channel. It is also possible, however, that the insulation layer is slightly shorter than the Coolant channel length is.
Um eine ausreichende Wärmeisolierung gewährleisten zu können, ist zweckmäßig vorgesehen, daß die Isolationsschicht aus Keramik besteht, wobei die Isolationsschicht auch aus einem wärmeresistenten, synthetischen Material bestehen kann.In order to ensure sufficient heat insulation is appropriate provided that the insulating layer consists of ceramic, wherein the Insulation layer also consist of a heat-resistant, synthetic material can.
Dadurch, daß die Isolationsschicht direkt mit dem Verbrennungsmotor, insbesondere in seinen Kühlmittelkanal eingegossen wird, können mit dem erfindungsgemäßen Verfahren, insbesondere Zylinderköpfe oder beispielsweise sogenannte "closed deck"-Varianten mit der Isolationsschicht hergestellt werden. Durch die formschlüssige Verbindung der Isolationsschicht mit den Innenwänden des Kühlmittelkanals zu seinen Außenseiten hin ist zudem eine verbesserte Wärmeisolierung gewährleistet. Denn, dadurch , daß die Isolationsschicht lediglich an den Außenseiten des Kühlmittelkanals vorgesehen ist, wobei ein zur Zylinderlaufbuchse hin angeordneter Bereich der Innenwand des Kühlmittelkanals eben diese Isolationsschicht nicht aufweist, kann das Kühlmittel die in der Zylinderlaufbuchse entstehende Wärme aufnehmen, wobei die Isolationsschicht eine Wärmeabgabe an den übrigen Zylinderblock bzw. Zylinderkopf weitgehend verhindert. Weiter wird eine Wärmeübertragung von dem Verbrennungsmotor zur ihn umgebenden Umgebungsluft verringert.Characterized in that the insulating layer directly to the internal combustion engine, in particular is poured into its coolant channel, can with the inventive Method, in particular cylinder heads or for example so-called "closed Deck "variants can be made with the insulating layer positive connection of the insulating layer with the inner walls of the Coolant channel to its outsides is also an improved Thermal insulation guaranteed. Because, by the fact that the insulation layer only is provided on the outer sides of the coolant channel, wherein a to Cylinder liner towards arranged region of the inner wall of the coolant channel just does not have this insulation layer, the coolant can in the Cylinder liner absorb heat generated, the insulation layer a Heat transfer to the other cylinder block or cylinder head largely prevented. Further, a heat transfer from the engine to him surrounding ambient air is reduced.
Mit dem erfindungsgemäßen Verfahren zur Herstellung des Verbrennungsmotors sowie dem erfindungsgemäßen Verbrennungsmotor mit der Isolationsschicht wird ein schnelleres Aufwärmen des Verbrennungsmotors bei einem Kaltstart erreicht. Hierdurch verringert sich nicht nur der Kraftstoffverbrauch, sondern es entstehen gleichzeitig weniger Schadstoffemissionen, indem eine schnellere Aktivierung (Anspringen) eines Katalysators erreicht wird, wobei die Light-off Temperatur eher erreicht wird. Weiter wird das Betriebsöl schneller auf die erforderliche Betriebstemperatur geführt, so daß der Verschleiß auch bei Kurzfahrten reduziert ist, wodurch der Verbrennungsmotor eine erhöhte Lebensdauer aufweist.With the inventive method for producing the internal combustion engine and the internal combustion engine according to the invention with the insulating layer is a achieved faster warm up of the internal combustion engine during a cold start. This not only reduces fuel consumption, it also creates it at the same time less pollutant emissions, adding a faster activation (Light-off) of a catalyst is achieved, with the light-off temperature rather is reached. Further, the operating oil is faster to the required Operating temperature led, so that the wear is reduced even in short trips, whereby the internal combustion engine has an increased life.
Claims (10)
dadurch gekennzeichnet, daß
die Isolationsschicht zumindest bereichsweise an den Innenwänden des Kühlmittelkanals zu seinen Außenseiten hin eingebracht ist, wobei die Isolationsschicht einstückig mit dem Kühlmittelkanal gebildet ist, so daß die Isolationsschicht formschlüssig mit der Innenwand des Kühlmittelkanals verbunden ist.Method for producing an internal combustion engine with at least one cylinder liner which is surrounded by at least one coolant channel, wherein an insulating layer is assigned to the coolant channel towards its outside,
characterized in that
the insulating layer is at least partially introduced on the inner walls of the coolant channel to its outer sides, wherein the insulating layer is integrally formed with the coolant channel, so that the insulating layer is positively connected to the inner wall of the coolant channel.
dadurch gekennzeichnet, daß
die Isolationsschicht gleichzeitig mit dem Kühlmittelkanal hergestellt wird.Method according to claim 1,
characterized in that
the insulation layer is produced simultaneously with the coolant channel.
dadurch gekennzeichnet, daß
die Isolationsschicht bei der Herstellung des Kühlmittelkanals direkt in diesen eingegossen wird.Method according to claim 1 or 2,
characterized in that
the insulation layer is poured directly into the coolant channel during production.
dadurch gekennzeichnet, daß
die Isolationsschicht in Kernen zur Ausbildung des Kühlmittelkanals integriert ist.Method according to one of claims 1 to 3,
characterized in that
the insulation layer is integrated in cores to form the coolant channel.
dadurch gekennzeichnet, daß
die Isolationsschicht aus Keramik besteht. Method according to one of the preceding claims,
characterized in that
the insulation layer consists of ceramic.
dadurch gekennzeichnet, daß
die Isolationsschicht aus einem wärme-resistenten synthetischen Material besteht.Method according to one of claims 1 to 5,
characterized in that
the insulating layer is made of a heat-resistant synthetic material.
dadurch gekennzeichnet, daß
die Isolationsschicht zumindest bereichsweise an den Innenwänden des Kühlmittelkanals zu seinen Außenseiten hin derart eingebracht ist, daß die Isolationsschicht einstückig mit dem Kühlmittelkanal gebildet ist, so daß die Isolationsschicht formschlüssig mit der Innenwand des Kühlmittelkanals verbunden ist.Internal combustion engine with at least one cylinder liner which is surrounded by at least one coolant channel, wherein the coolant channel is assigned to its outside an insulating layer, in particular according to one of the preceding claims,
characterized in that
the insulation layer is at least partially introduced on the inner walls of the coolant channel to its outer sides such that the insulation layer is integrally formed with the coolant channel, so that the insulation layer is positively connected to the inner wall of the coolant channel.
dadurch gekennzeichnet, daß
die Isolationsschicht im Querschnitt gesehen in einem Teilkreisabschnitt an den Innenwänden des Kühlmittelkanals angeordnet ist.Internal combustion engine according to claim 7,
characterized in that
the insulation layer is seen in cross-section in a partial circle section on the inner walls of the coolant channel.
dadurch gekennzeichnet, daß
die Isolationsschicht aus Keramik besteht.Internal combustion engine according to claim 7 or 8,
characterized in that
the insulation layer consists of ceramic.
dadurch gekennzeichnet, daß
die Isolationsschicht aus einem wärme-resistenten synthetischen Material besteht.Internal combustion engine according to claim 7 or 8,
characterized in that
the insulating layer is made of a heat-resistant synthetic material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20040101829 EP1591639B1 (en) | 2004-04-29 | 2004-04-29 | Method for producing an internal combustion engine |
| DE200450011549 DE502004011549D1 (en) | 2004-04-29 | 2004-04-29 | Method for producing an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20040101829 EP1591639B1 (en) | 2004-04-29 | 2004-04-29 | Method for producing an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1591639A1 true EP1591639A1 (en) | 2005-11-02 |
| EP1591639B1 EP1591639B1 (en) | 2010-08-18 |
Family
ID=34929039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20040101829 Expired - Lifetime EP1591639B1 (en) | 2004-04-29 | 2004-04-29 | Method for producing an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1591639B1 (en) |
| DE (1) | DE502004011549D1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015200103A1 (en) | 2014-01-27 | 2015-07-30 | Ford Global Technologies, Llc | Internal combustion engine with liquid-cooled cylinder head |
| DE102014201411A1 (en) * | 2014-01-27 | 2015-08-13 | Ford Global Technologies, Llc | Internal combustion engine with cooled turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3408490A1 (en) * | 1984-03-08 | 1985-09-12 | Willibald 8000 München Hiemer | Cylinder block of a water-cooled reciprocating piston internal combustion engine |
| DE3602616A1 (en) * | 1986-01-29 | 1986-09-18 | Dalibor 44801 Bochum Plesek | Shortening of the warm-up phase in liquid-cooled internal combustion engines |
| EP0647804A1 (en) * | 1993-10-12 | 1995-04-12 | Yamaha Hatsudoki Kabushiki Kaisha | Internal combustion engine |
| FR2745332A1 (en) * | 1996-02-28 | 1997-08-29 | Renault | I.C. engine cooling system |
| DE19745585A1 (en) * | 1996-10-16 | 1998-04-30 | Avl List Gmbh | Internal combustion engine for motor vehicle |
-
2004
- 2004-04-29 DE DE200450011549 patent/DE502004011549D1/en not_active Expired - Lifetime
- 2004-04-29 EP EP20040101829 patent/EP1591639B1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3408490A1 (en) * | 1984-03-08 | 1985-09-12 | Willibald 8000 München Hiemer | Cylinder block of a water-cooled reciprocating piston internal combustion engine |
| DE3602616A1 (en) * | 1986-01-29 | 1986-09-18 | Dalibor 44801 Bochum Plesek | Shortening of the warm-up phase in liquid-cooled internal combustion engines |
| EP0647804A1 (en) * | 1993-10-12 | 1995-04-12 | Yamaha Hatsudoki Kabushiki Kaisha | Internal combustion engine |
| FR2745332A1 (en) * | 1996-02-28 | 1997-08-29 | Renault | I.C. engine cooling system |
| DE19745585A1 (en) * | 1996-10-16 | 1998-04-30 | Avl List Gmbh | Internal combustion engine for motor vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015200103A1 (en) | 2014-01-27 | 2015-07-30 | Ford Global Technologies, Llc | Internal combustion engine with liquid-cooled cylinder head |
| DE102014201411A1 (en) * | 2014-01-27 | 2015-08-13 | Ford Global Technologies, Llc | Internal combustion engine with cooled turbine |
| US9784127B2 (en) | 2014-01-27 | 2017-10-10 | Ford Global Technologies, Llc | Internal combustion engine with cooled turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1591639B1 (en) | 2010-08-18 |
| DE502004011549D1 (en) | 2010-09-30 |
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