DE102014100841A1 - Cylinder head for internal combustion engine, has inlet and outlet that are separated using separating region that is provided with throttle point for defined short-circuit flow between inlet and outlet - Google Patents
Cylinder head for internal combustion engine, has inlet and outlet that are separated using separating region that is provided with throttle point for defined short-circuit flow between inlet and outlet Download PDFInfo
- Publication number
- DE102014100841A1 DE102014100841A1 DE201410100841 DE102014100841A DE102014100841A1 DE 102014100841 A1 DE102014100841 A1 DE 102014100841A1 DE 201410100841 DE201410100841 DE 201410100841 DE 102014100841 A DE102014100841 A DE 102014100841A DE 102014100841 A1 DE102014100841 A1 DE 102014100841A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- inlet
- outlet
- exit
- valve seat
- 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.)
- Withdrawn
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Images
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
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- 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
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/14—Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves
-
- 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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
Landscapes
- 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
Description
Die Erfindung betrifft einen Zylinderkopf für eine Brennkraftmaschine mit zumindest einem Zylinder, mit zumindest einem Ventilsitzring für ein Hubventil, wobei der Ventilsitzring von einem zumindest teilweise in den Zylinderkopf eingeformten ringförmigen Kühlkanal umgeben ist, wobei sich der Kühlkanal um einen Winkelbereich von mindestens 280°, vorzugsweise mindestens 300°, um den Ventilsitzring zwischen einem Eintritt und einem Austritt für ein Kühlmittel erstreckt, und wobei Eintritt und Austritt auf der selben Seite des Zylinders angeordnet sind und zwischen dem Eintritt und dem Austritt ein Trennbereich ausgebildet ist. The invention relates to a cylinder head for an internal combustion engine having at least one cylinder, with at least one valve seat ring for a globe valve, wherein the valve seat ring is surrounded by an at least partially molded into the cylinder head annular cooling channel, wherein the cooling channel by an angular range of at least 280 °, preferably at least 300 ° to extend the valve seat ring between an inlet and an outlet for a coolant, and wherein inlet and outlet are arranged on the same side of the cylinder and between the inlet and the outlet, a separation area is formed.
Aus der
Die
Weiters sind aus den Veröffentlichungen
Aus der
Die
Nachteilig ist, dass der Trennbereich zwischen Eintritt und Austritt eine ungekühlte Wärmebrücke bildet und es dadurch zur lokalen Überhitzungen und thermischen Spannungen kommen kann, insbesondere, wenn der Trennbereich nahe des thermisch hochbelasteten Steges zwischen zwei Auslassventilen positioniert ist. The disadvantage is that the separation region between inlet and outlet forms an uncooled thermal bridge and this can lead to local overheating and thermal stresses, in particular if the separation region is positioned near the thermally highly stressed web between two outlet valves.
Aufgabe der Erfindung ist es, diese Nachteile zu vermeiden und eine gleichmäßigere Kühlung des Ventilsitzringes zu ermöglichen. The object of the invention is to avoid these disadvantages and to allow a more uniform cooling of the valve seat ring.
Erfindungsgemäß wird dies dadurch erreicht, dass der Trennbereich eine Drosselstelle für eine definierte Kurzschlussströmung zwischen Eintritt und Austritt aufweist, wobei der Querschnitt der Drosselstelle zwischen 1% und 10% des maximalen Querschnitts des Kühlkanals beträgt. According to the invention this is achieved in that the separation region has a throttle point for a defined short-circuit flow between inlet and outlet, wherein the cross section of the throttle point is between 1% and 10% of the maximum cross section of the cooling channel.
Durch die definierte Drosselstelle kommt es zu einer beabsichtigten Leckageströmung zwischen dem Eintritt und dem Austritt im Trennbereich, wodurch zuverlässig ein lokales Hitzemaximum am Ventilumfang zwischen dem Eintritt und dem Austritt verhindert werden kann. Due to the defined throttle point, there is an intended leakage flow between the inlet and the outlet in the separation area, whereby a local heat maximum at the valve circumference between the inlet and the outlet can be reliably prevented.
Vorzugsweise ist vorgesehen, dass die Drosselstelle durch eine definierte Engestelle zwischen dem Zylinderkopf und dem Ventilsitzring ausgebildet ist. It is preferably provided that the throttle point is formed by a defined Engestelle between the cylinder head and the valve seat ring.
Der Eintritt steht dabei mit gegossenen oder gebohrten Eintrittskanälen, der Austritt mit gegossenen oder gebohrten Austrittskanälen des Zylinderkopfes in Strömungsverbindung. The entry stands in this case with cast or drilled inlet channels, the outlet with cast or drilled outlet channels of the cylinder head in fluid communication.
Dabei kann vorgesehen sein, dass der Eintritt mit einer Druckquelle im Zylinderkopf und der Austritt mit einer Drucksenke im Zylinderblock verbunden ist. Alternativ dazu ist es auch möglich, dass der Eintritt mit einer Druckquelle im Zylinderblock und der Austritt mit einer Drucksenke im Zylinderkopf verbunden ist. It can be provided that the inlet is connected to a pressure source in the cylinder head and the outlet with a pressure sink in the cylinder block. Alternatively, it is also possible that the inlet is connected to a pressure source in the cylinder block and the outlet with a pressure sink in the cylinder head.
In einer besonders vorteilhaften Ausführung der Erfindung ist vorgesehen, dass der Kühlkanal des Ventilsitzringes vom Kühlsystem des restlichten Zylinderkopfes getrennt ist. Dadurch ist es möglich, andere Drücke oder Kühlmedien zur Kühlung des Ventilsitzringes zu verwenden als beispielsweise zur Kühlung des Zylinderkopfes. Insbesondere kann dabei der Einritt und der Austritt mit dem Schmierölsystem der Brennkraftmaschine verbunden sein. In a particularly advantageous embodiment of the invention it is provided that the cooling channel of the valve seat ring is separated from the cooling system of the restlichten cylinder head. This makes it possible to use other pressures or cooling media for cooling the valve seat ring than, for example, for cooling the cylinder head. In particular, can while the entrance and the exit are connected to the lubricating oil system of the internal combustion engine.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen: The invention will be explained in more detail below with reference to FIGS. Show it:
Die Figuren zeigen einen Zylinderkopf
Zwischen dem Einritt
Um punktuelle Überhitzungen des Trennbereiches
Im Ausführungsbeispiel kann der Eintritt
Alternativ dazu sind auch Ausführungen möglich, bei denen der Eintritt
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
- DE 102011009513 A1 [0002] DE 102011009513 A1 [0002]
- CH 272380 A1 [0003] CH 272380 A1 [0003]
- JP 57-15918 U [0004] JP 57-15918 U [0004]
- JP 55-94422 U [0004] JP 55-94422 U [0004]
- WO 08/059108 A [0005] WO 08/059108 A [0005]
- CH 272380 B [0006] CH 272380 B [0006]
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50059/2013A AT513262B1 (en) | 2013-01-29 | 2013-01-29 | Cylinder head for an internal combustion engine |
AT50059/2013 | 2013-01-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102014100841A1 true DE102014100841A1 (en) | 2014-07-31 |
Family
ID=50238006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201410100841 Withdrawn DE102014100841A1 (en) | 2013-01-29 | 2014-01-24 | Cylinder head for internal combustion engine, has inlet and outlet that are separated using separating region that is provided with throttle point for defined short-circuit flow between inlet and outlet |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT513262B1 (en) |
DE (1) | DE102014100841A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107143430A (en) * | 2017-07-06 | 2017-09-08 | 中国船舶重工集团公司第七研究所 | Cylinder cover for diesel engine |
WO2018114022A1 (en) * | 2016-12-22 | 2018-06-28 | Daimler Ag | Method for producing a cylinder head, and cylinder head |
US11008973B2 (en) | 2017-02-24 | 2021-05-18 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014012807A1 (en) | 2014-08-28 | 2016-03-03 | Daimler Ag | Cylinder head for an internal combustion engine, in particular a motor vehicle |
AT519991B1 (en) | 2017-06-02 | 2019-07-15 | Avl List Gmbh | Cylinder head with valve seat ring cooling |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH272380A (en) | 1949-03-09 | 1950-12-15 | Sulzer Ag | Valve device on internal combustion engines. |
JPS5594422U (en) | 1978-12-25 | 1980-06-30 | ||
JPS5715918U (en) | 1980-06-30 | 1982-01-27 | ||
WO2008059108A1 (en) | 2006-11-14 | 2008-05-22 | Wärtsilä Finland Oy | Valve seat insert for a piston engine |
DE102011009513A1 (en) | 2010-01-26 | 2011-09-01 | Société de Motorisations Aéronautiques | Cylinder head of an internal combustion engine with a cooling circuit |
-
2013
- 2013-01-29 AT ATA50059/2013A patent/AT513262B1/en not_active IP Right Cessation
-
2014
- 2014-01-24 DE DE201410100841 patent/DE102014100841A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH272380A (en) | 1949-03-09 | 1950-12-15 | Sulzer Ag | Valve device on internal combustion engines. |
JPS5594422U (en) | 1978-12-25 | 1980-06-30 | ||
JPS5715918U (en) | 1980-06-30 | 1982-01-27 | ||
WO2008059108A1 (en) | 2006-11-14 | 2008-05-22 | Wärtsilä Finland Oy | Valve seat insert for a piston engine |
DE102011009513A1 (en) | 2010-01-26 | 2011-09-01 | Société de Motorisations Aéronautiques | Cylinder head of an internal combustion engine with a cooling circuit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018114022A1 (en) * | 2016-12-22 | 2018-06-28 | Daimler Ag | Method for producing a cylinder head, and cylinder head |
US11008973B2 (en) | 2017-02-24 | 2021-05-18 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
US11441512B2 (en) | 2017-02-24 | 2022-09-13 | Cummins Inc. | Engine cooling system including cooled exhaust seats |
CN107143430A (en) * | 2017-07-06 | 2017-09-08 | 中国船舶重工集团公司第七研究所 | Cylinder cover for diesel engine |
CN107143430B (en) * | 2017-07-06 | 2023-11-14 | 中国船舶集团有限公司第七一一研究所 | Cylinder cover of diesel engine |
Also Published As
Publication number | Publication date |
---|---|
AT513262B1 (en) | 2014-03-15 |
AT513262A4 (en) | 2014-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |