DE102010047574A1 - Cylinder head for metal alloy for assembly of internal combustion engine, has cooling channel for coolant, where cooling channel has wear-resistant coating or channel wall has alloy constituents - Google Patents

Cylinder head for metal alloy for assembly of internal combustion engine, has cooling channel for coolant, where cooling channel has wear-resistant coating or channel wall has alloy constituents Download PDF

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Publication number
DE102010047574A1
DE102010047574A1 DE102010047574A DE102010047574A DE102010047574A1 DE 102010047574 A1 DE102010047574 A1 DE 102010047574A1 DE 102010047574 A DE102010047574 A DE 102010047574A DE 102010047574 A DE102010047574 A DE 102010047574A DE 102010047574 A1 DE102010047574 A1 DE 102010047574A1
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Prior art keywords
cooling channel
channel
cylinder head
coolant
wear
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DE102010047574A
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German (de)
Inventor
Markus Geminn
Andreas Steigert
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Tenneco GmbH
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Tenneco GmbH
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Priority to DE102010047574A priority Critical patent/DE102010047574A1/en
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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 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
    • 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 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The cylinder head (2) has a cooling channel (3a-3c) for coolant. The cooling channel has a wear-resistant coating or a channel wall has alloy constituents that increase the wear resistance relative to the metal alloy. The wear resistant coating is partially made up of chromium, titanium nitride or boron nitride.

Description

Die Erfindung bezieht sich auf einen Zylinderkopf und/oder einen Abgaskrümmer aus einer Metalllegierung für eine Brennkraftmaschine mit mindestens einem Kühlkanal für Kühlmittel und auf einen Zylinderkopf mit einem darin zumindest teilweise integrierten oder daran angeflanschten Abgaskrümmer, wobei mindestens ein Kühlkanal innerhalb des Zylinderkopfes und/oder innerhalb des integrierten Abgaskrümmers vorgesehen ist.The invention relates to a cylinder head and / or an exhaust manifold made of a metal alloy for an internal combustion engine having at least one cooling channel for coolant and on a cylinder head with an at least partially integrated or flanged thereto exhaust manifold, wherein at least one cooling channel within the cylinder head and / or within the integrated exhaust manifold is provided.

Es ist bereits ein in den Zylinderkopf einer Brennkraftmaschine integrierter Krümmer aus der US 2009/0126659 A1 bekannt. Zwecks Vermeidung von Kavitation wird beschrieben, die Kühlmittelpumpe saugseitig zu platzieren.It is already integrated into the cylinder head of an internal combustion engine manifold from the US 2009/0126659 A1 known. In order to avoid cavitation, it is described to place the coolant pump on the suction side.

Der Erfindung liegt die Aufgabe zugrunde, einen Zylinderkopf und/oder Krümmer derart auszubilden und anzuordnen, dass die Standzeit verlängert wird.The invention has for its object to form a cylinder head and / or manifold in such a way and to arrange that the service life is extended.

Gelöst wird die Aufgabe erfindungsgemäß dadurch, dass der Kühlkanal eine verschleißfeste Beschichtung aufweist oder zumindest die Kanalwand oder die kühlmittelführende Oberfläche Legierungsbestandteile aufweist, die die Verschleißfestigkeit relativ zu der der Metalllegierung erhöhen. Wenn es sich um einen integrierten Abgaskrümmer handelt, d. h. einen Abgaskrümmer, der an den Zylinderkopf angegossen ist, so wird die Verschleißfestigkeit über das Maß der verwendeten Metalllegierung, vorzugsweise eine Aluminiumlegierung, hinaus entsprechend erhöht. Dies gilt auch für einen angeflanschten Abgaskrümmer, sofern dieser wie auch der Zylinderkopf aus einer ähnlichen, also weniger verschleißfesten Legierung gebildet ist.The object is achieved according to the invention in that the cooling channel has a wear-resistant coating or at least the channel wall or the coolant-carrying surface has alloying constituents which increase the wear resistance relative to the metal alloy. If it is an integrated exhaust manifold, d. H. an exhaust manifold which is molded to the cylinder head, the wear resistance over the level of the metal alloy used, preferably an aluminum alloy, is increased accordingly. This also applies to a flanged exhaust manifold, provided that this as well as the cylinder head is formed of a similar, ie less wear-resistant alloy.

Hierdurch wird erreicht, dass der durch Kavitation des Kühlmittels oder andere Einflüsse wie Partikel im flüssigen Kühlmittel begründeten Erosion des Kühlkanals bzw. der Kühlkanalwand entgegengewirkt bzw. dass diese verringert wird. Insbesondere bei integrierten Krümmern sind zwecks Gewährleistung ausreichender Kühlung hohe Strömungsgeschwindigkeiten des flüssigen Kühlmittels erforderlich. Damit verbunden sind hohe Temperatur- und Geschwindigkeitsgradienten innerhalb des Kühlmittels. Dies führt zu Kavitation und somit zu Materialerosion im Kühlkanal des Zylinderkopfes bzw. des Krümmers. Durch die erfindungsgemäße Beschichtung bzw. wandnahe Legierung wird die Verschleißfestigkeit des Kühlkanals über ein für Abgaskrümmer bzw. Zylinderköpfe übliches Maß hinaus erhöht und somit diesen Nachteilen entgegengewirkt.It is thereby achieved that the erosion of the cooling channel or the cooling channel wall due to cavitation of the coolant or other influences such as particles in the liquid coolant is counteracted or that this is reduced. Particularly in the case of integrated manifolds, in order to ensure adequate cooling, high flow velocities of the liquid coolant are required. This is associated with high temperature and velocity gradients within the coolant. This leads to cavitation and thus to material erosion in the cooling channel of the cylinder head or the manifold. As a result of the coating according to the invention or near-wall alloy, the wear resistance of the cooling channel is increased beyond a level customary for exhaust manifolds or cylinder heads and thus counteracts these disadvantages.

Ferner kann es vorteilhaft sein, wenn die Beschichtung zumindest teilweise aus Chrom, Titan-Nitrid und/oder Bor-Nitrid gebildet ist. Dies lässt geringe Herstellungskosten bei gleichzeitig hohen Standzeiten zu.Furthermore, it may be advantageous if the coating is formed at least partially from chromium, titanium nitride and / or boron nitride. This allows low production costs and high service life.

Vorteilhaft kann es auch sein, wenn zumindest die Kanalwand oder die kühlmittelführende Oberfläche des Kühlkanals hartverchromt ist. Chrom stellt aufgrund seiner Härte einen sehr guten Erosionsschutz dar.It may also be advantageous if at least the channel wall or the coolant-carrying surface of the cooling channel is hard chromium-plated. Chromium is a very good erosion protection due to its hardness.

In diesem Zusammenhang kann es von Vorteil sein, wenn als Legierungsbestandteile Chrom, Titan-Nitrid oder Bor-Nitrid in der kühlmittelführenden Oberfläche oder der Kanalwand enthalten sind. Vorteilhafterweise ist der Legierungsbestandteil von Chrom, Titan-Nitrid oder Bor-Nitrid im Bereich der Kanalwand oder der kühlmittelführenden Oberfläche größer als in anderen bzw. tiefer liegenden Bereichen des Kanals bzw. des Zylinderkopfes oder des Abgaskrümmers.In this context, it may be advantageous if chromium, titanium nitride or boron nitride are contained in the coolant-carrying surface or the channel wall as alloying constituents. Advantageously, the alloying constituent of chromium, titanium nitride or boron nitride in the region of the channel wall or the coolant-carrying surface is greater than in other or lower regions of the channel or the cylinder head or the exhaust manifold.

Weitere Vorteile und Einzelheiten der Erfindung sind in den Patentansprüchen und in der Beschreibung erläutert und in den Figuren dargestellt. Es zeigt:Further advantages and details of the invention are explained in the patent claims and in the description and illustrated in the figures. It shows:

1a einen Zylinderkopf mit integriertem Abgaskrümmer und Kühlkanal; 1a a cylinder head with integrated exhaust manifold and cooling channel;

1b eine Detailansicht des Kühlkanals; 1b a detailed view of the cooling channel;

1c eine Detailansicht des Kühlkanals. 1c a detailed view of the cooling channel.

Ein in 1a dargestellter Zylinderkopf 2 weist sechs Einlasskanäle 2.1–2.6 sowie einen integrierten Abgas- bzw. Auslasskrümmer 1 mit sechs Krümmerrohren bzw. Krümmerkanälen 1.1–1.6 auf. Ferner sind drei Ausnehmungen 4.1–4.3 für Haltemittel vorgesehen.An in 1a illustrated cylinder head 2 has six inlet channels 2.1 - 2.6 and an integrated exhaust or exhaust manifold 1 with six manifolds or manifolds 1.1 - 1.6 on. Furthermore, there are three recesses 4.1 - 4.3 intended for holding means.

Innerhalb des Zylinderkopfes 2 sowie innerhalb des Auslasskrümmers 1 sind Kühlkanäle 3a–3c, 3a'–3c' für Kühlmittel vorgesehen, die wahlweise mit Chrom, Titan-Nitrid und/oder Bor-Nitrid beschichtet sind oder deren kühlmittelführende Oberfläche erhöhte Legierungsbestandteile wie Chrom, Titan-Nitrid und/oder Bor-Nitrid enthält.Inside the cylinder head 2 and within the exhaust manifold 1 are cooling channels 3a - 3c . 3a ' - 3c ' for coolants which are optionally coated with chromium, titanium nitride and / or boron nitride or whose coolant-carrying surface contains elevated alloy constituents such as chromium, titanium nitride and / or boron nitride.

Gemäß Detailansicht 1b – beispielhaft für den Kühlkanal 3c des Krümmer – ist die Innenseite des jeweiligen Kühlkanals 3a–3c bzw. dessen Kanalwand 3.3 mit einer Beschichtung 3.1 aus Chrom, Titan-Nitrid und/oder Bor-Nitrid versehen. Die Beschichtung 3.1 bildet die kühlmittelführende Oberfläche.According to detailed view 1b - exemplary for the cooling channel 3c of the manifold - is the inside of the respective cooling channel 3a - 3c or its channel wall 3.3 with a coating 3.1 made of chromium, titanium nitride and / or boron nitride. The coating 3.1 forms the coolant-carrying surface.

Nach Detailansicht 1c – beispielhaft für den Kühlkanal 3c des Krümmer – ist keine Beschichtung 3.1 vorgesehen. Mithin bildet die Kanalwand 3.3 die kühlmittelführende Oberfläche. Die Kanalwand 3.3 bzw. die kühlmittelführende Oberfläche weist einen erhöhten Legierungsbestandteil 3.2 auf. Vorgenannte Anreicherung der kühlmittelführenden Oberfläche 3.3 mit Legierungsbestandteilen könnte beispielsweise durch eine entsprechende Beschichtung der zum Guss vorzusehenden Guss-Kerne gewährleistet werden, die durch die kern- bzw. wandnahen Bereiche bzw. die Kanalwand 3.3 des Gussteils 1, 2 aufgenommen wird.After detailed view 1c - exemplary for the cooling channel 3c of the manifold - is not a coating 3.1 intended. Thus forms the channel wall 3.3 the coolant-carrying surface. The canal wall 3.3 or the coolant-carrying surface has an increased alloying component 3.2 on. The aforementioned accumulation of the coolant-carrying surface 3.3 with alloy components could be ensured, for example, by a corresponding coating to be provided for casting cast cores, through the core or wall near areas or the channel wall 3.3 of the casting 1 . 2 is recorded.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Abgaskrümmer, Auslasskrümmer, GussteilExhaust manifold, exhaust manifold, casting
1.11.1
Krümmerrohr, KrümmerkanalHeader pipe, manifold channel
1.21.2
Krümmerrohr, KrümmerkanalHeader pipe, manifold channel
1.31.3
Krümmerrohr, KrümmerkanalHeader pipe, manifold channel
1.41.4
Krümmerrohr, KrümmerkanalHeader pipe, manifold channel
1.51.5
Krümmerrohr, KrümmerkanalHeader pipe, manifold channel
1.61.6
Krümmerrohr, KrümmerkanalHeader pipe, manifold channel
1.71.7
Metalllegierungmetal alloy
22
Zylinderkopf, GussteilCylinder head, casting
2.12.1
Einlasskanalinlet channel
2.22.2
Einlasskanalinlet channel
2.32.3
Einlasskanalinlet channel
2.42.4
Einlasskanalinlet channel
2.52.5
Einlasskanalinlet channel
2.62.6
Einlasskanalinlet channel
2.72.7
Metalllegierungmetal alloy
3a3a
Kühlkanalcooling channel
3b3b
Kühlkanalcooling channel
3c3c
Kühlkanalcooling channel
3a'3a '
Kühlkanalcooling channel
3b'3b '
Kühlkanalcooling channel
3c'3c '
Kühlkanalcooling channel
3.13.1
Beschichtungcoating
3.23.2
erhöhter Legierungsbestandteilincreased alloying ingredient
3.33.3
Kanalwand, kühlmittelführende Oberfläche (1c)Channel wall, coolant-carrying surface ( 1c )
4.14.1
Ausnehmung für HaltemittelRecess for holding means
4.24.2
Ausnehmung für HaltemittelRecess for holding means
4.34.3
Ausnehmung für HaltemittelRecess for holding means

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • US 2009/0126659 A1 [0002] US 2009/0126659 A1 [0002]

Claims (7)

Zylinderkopf (2) aus einer Metalllegierung (2.7) für eine Brennkraftmaschine mit mindestens einem Kühlkanal (3a–3c) für Kühlmittel, dadurch gekennzeichnet, dass der Kühlkanal (3a–3c) eine verschleißfeste Beschichtung (3.1) aufweist oder zumindest eine Kanalwand (3.3) Legierungsbestandteile (3.2) aufweist, die die Verschleißfestigkeit relativ zu der der Metalllegierung (2.7) erhöhen.Cylinder head ( 2 ) of a metal alloy ( 2.7 ) for an internal combustion engine having at least one cooling channel ( 3a - 3c ) for coolant, characterized in that the cooling channel ( 3a - 3c ) a wear-resistant coating ( 3.1 ) or at least one channel wall ( 3.3 ) Alloy components ( 3.2 ), the wear resistance relative to that of the metal alloy ( 2.7 ) increase. Abgaskrümmer (1) aus einer Metalllegierung (1.7) für einen Zylinderkopf (2) einer Brennkraftmaschine mit mindestens einem Kühlkanal (3a–3c) für Kühlmittel, dadurch gekennzeichnet, dass der Kühlkanal (3a–3c) eine verschleißfeste Beschichtung (3.1) aufweist oder zumindest die Kanalwand (3.3) Legierungsbestandteile (3.2) aufweist, die die Verschleißfestigkeit relativ zu der der Metalllegierung (1.7) erhöhen.Exhaust manifold ( 1 ) of a metal alloy ( 1.7 ) for a cylinder head ( 2 ) of an internal combustion engine having at least one cooling channel ( 3a - 3c ) for coolant, characterized in that the cooling channel ( 3a - 3c ) a wear-resistant coating ( 3.1 ) or at least the channel wall ( 3.3 ) Alloy components ( 3.2 ), the wear resistance relative to that of the metal alloy ( 1.7 ) increase. Baugruppe bestehend aus einem Zylinderkopf (2) nach Anspruch 1 und einem Abgaskrümmer (1) nach Anspruch 2, dadurch gekennzeichnet, dass der Abgaskrümmer (1) an den Zylinderkopf (2) angeflanscht oder in den Zylinderkopf (2) zumindest teilweise integriert ist.Assembly consisting of a cylinder head ( 2 ) according to claim 1 and an exhaust manifold ( 1 ) according to claim 2, characterized in that the exhaust manifold ( 1 ) to the cylinder head ( 2 ) or in the cylinder head ( 2 ) is at least partially integrated. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Beschichtung (3.1) zumindest teilweise aus Chrom, Titan-Nitrid und/oder Bor-Nitrid gebildet ist.Device according to claim 1, 2 or 3, characterized in that the coating ( 3.1 ) is at least partially formed of chromium, titanium nitride and / or boron nitride. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Kanalwand (3.3) des Kühlkanals (3a–3c) hartverchromt ist.Apparatus according to claim 1, 2 or 3, characterized in that the channel wall ( 3.3 ) of the cooling channel ( 3a - 3c ) is hard chromed. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Legierungsbestandteile Chrom, Titan-Nitrid oder Bor-Nitrid in der kühlmittelführenden Oberfläche enthalten sind.Device according to one of the preceding claims, characterized in that are contained as alloying constituents chromium, titanium nitride or boron nitride in the coolant-carrying surface. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Legierungsbestandteil (3.2) von Chrom, Titan-Nitrid oder Bor-Nitrid im Bereich der Kanalwand (3.3) größer ist als in anderen Bereichen des Zylinderkopfes (2) oder des Abgaskrümmers (1).Device according to claim 6, characterized in that the alloying component ( 3.2 ) of chromium, titanium nitride or boron nitride in the region of the channel wall ( 3.3 ) is greater than in other areas of the cylinder head ( 2 ) or the exhaust manifold ( 1 ).
DE102010047574A 2010-10-07 2010-10-07 Cylinder head for metal alloy for assembly of internal combustion engine, has cooling channel for coolant, where cooling channel has wear-resistant coating or channel wall has alloy constituents Withdrawn DE102010047574A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089477A (en) * 2016-07-15 2016-11-09 阿尔特汽车技术股份有限公司 Novel integrated discharge manifold formula four-cylinder cylinder cap

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623360A1 (en) * 1986-07-11 1988-01-14 Cameron Iron Works Gmbh Device with adjacent surfaces, between which high pressures and/or high friction loads occur
JPH01155062A (en) * 1987-12-10 1989-06-16 Nippon Piston Ring Co Ltd Cylinder liner
DE10334701A1 (en) * 2003-07-30 2005-02-24 Daimlerchrysler Ag Thermally sprayed cylinder liner for internal combustion engines is made from an iron-based alloy containing dispersed friction- and wear-reducing particles made from a metal alloy of aluminum, copper, zinc, tin and/or molybdenum
US20090126659A1 (en) 2007-11-19 2009-05-21 Gm Global Technology Operations, Inc. Turbocharged engine cylinder head internal cooling
DE102008061936A1 (en) * 2007-12-12 2009-06-18 Hyundai Motor Co. Cylinder head with a integrally formed Abgasauslasskrümmeranordnung
DE102010012004A1 (en) * 2009-03-13 2010-09-16 Ipt International Plating Technologies Gmbh Workpiece with at least one nickel-containing layer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623360A1 (en) * 1986-07-11 1988-01-14 Cameron Iron Works Gmbh Device with adjacent surfaces, between which high pressures and/or high friction loads occur
JPH01155062A (en) * 1987-12-10 1989-06-16 Nippon Piston Ring Co Ltd Cylinder liner
DE10334701A1 (en) * 2003-07-30 2005-02-24 Daimlerchrysler Ag Thermally sprayed cylinder liner for internal combustion engines is made from an iron-based alloy containing dispersed friction- and wear-reducing particles made from a metal alloy of aluminum, copper, zinc, tin and/or molybdenum
US20090126659A1 (en) 2007-11-19 2009-05-21 Gm Global Technology Operations, Inc. Turbocharged engine cylinder head internal cooling
DE102008061936A1 (en) * 2007-12-12 2009-06-18 Hyundai Motor Co. Cylinder head with a integrally formed Abgasauslasskrümmeranordnung
DE102010012004A1 (en) * 2009-03-13 2010-09-16 Ipt International Plating Technologies Gmbh Workpiece with at least one nickel-containing layer

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* Cited by examiner, † Cited by third party
Title
Abstract & JP 01155062 A *
JP01-155 062 A (Abstract)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089477A (en) * 2016-07-15 2016-11-09 阿尔特汽车技术股份有限公司 Novel integrated discharge manifold formula four-cylinder cylinder cap

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