AT507010A2 - Cylinder head for internal combustion engine, has gas-exchange channel, particularly outlet channel, where gas-exchange channel has segmented surface structure which is formed by recesses and projections - Google Patents
Cylinder head for internal combustion engine, has gas-exchange channel, particularly outlet channel, where gas-exchange channel has segmented surface structure which is formed by recesses and projections Download PDFInfo
- Publication number
- AT507010A2 AT507010A2 AT0127609A AT12762009A AT507010A2 AT 507010 A2 AT507010 A2 AT 507010A2 AT 0127609 A AT0127609 A AT 0127609A AT 12762009 A AT12762009 A AT 12762009A AT 507010 A2 AT507010 A2 AT 507010A2
- Authority
- AT
- Austria
- Prior art keywords
- cylinder head
- elevations
- depressions
- gas
- recesses
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 3
- 239000011159 matrix material Substances 0.000 claims abstract 2
- 238000005266 casting Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
- F02F1/4271—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels with an exhaust liner
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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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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
- 1 -- 1 -
·*··· · · ·· ·· ·· Φ· ··· ·««· ·· 55909· * · · · · · · · · · · · · · · · · Φ «« · · 55909
Die Erfindung betrifft einen Zylinderkopf für eine Brennkraftmaschine mit zumindest einem Gaswechselkanal, insbesondere einem Auslasskanal.The invention relates to a cylinder head for an internal combustion engine having at least one gas exchange channel, in particular an outlet channel.
Es ist bekannt, dass mit einer golfballähnlichen Oberflächenstruktur Strömungsverluste vermindert werden können.It is known that with a golf ball-like surface structure flow losses can be reduced.
Die DE 198 40 303 A beschreibt eine Oberflächenstruktur für Fahrzeuge mit der der Strömungswiderstandsbleiwert vermindert werden kann, indem die beström-ten Oberflächen eine Narbung zur Erzeugung von Mikroturbolenzen aufweisen.DE 198 40 303 A describes a surface structure for vehicles with which the flow resistance lead value can be reduced, in that the flow-through surfaces have a grain for generating microturbolences.
Aus der DE 196 13 304 Al ist eine Oberflächenstruktur für die Außenhaut bewegbar oder ruhender Körper bekannt, die einem Strömungsmedium ausgesetzt sind. Die Oberfläche der Außenhaut ist zur Zielung eines verbesserten Wirkungsgrades und zur Verbesserung der mechanischen Stabilität signifikant strukturiert ausgebildet, wobei in der Oberfläche oder Außenhaut des Körpers eine Vielzahl von Vertiefungen vorgesehen sind.From DE 196 13 304 Al a surface structure for the outer skin movable or stationary body is known, which are exposed to a flow medium. The surface of the outer skin is designed to target an improved efficiency and to improve the mechanical stability significantly structured, wherein in the surface or outer skin of the body a plurality of wells are provided.
Die JP 11-082860 Al offenbart ein Rohr, dessen innere Oberfläche mit einer Vielzahl an noppenförmigen Erhebungen ausgeführt ist. Durch diese Erhebungen kann der Durchfluss gesteigert werden.JP 11-082860 Al discloses a tube whose inner surface is designed with a plurality of knob-shaped elevations. Through these surveys, the flow can be increased.
Aus der DE 103 47 022 Al ist es bekannt umströmte Oberflächen mit Vertiefungen auszuführen, um die Partikelablagerung und die Eisbildung zu vermindern.From DE 103 47 022 Al it is known to perform flow-around surfaces with depressions in order to reduce the particle deposition and ice formation.
Es ist die Aufgabe der Erfindung, Strömungsverluste durch Ablöseerscheinungen in Gaswechselkanälen zu vermindern. Eine weitere Aufgabe ist es, die Bildung von Ablagerungen zu reduzieren.It is the object of the invention to reduce flow losses by separation phenomena in gas exchange channels. Another task is to reduce the formation of deposits.
Erfindungsgemäß wird dies dadurch erreicht, dass der Gaswechselkanal, zumindest abschnittsweise, zumindest eine Oberflächenstruktur aufweist, wobei vorzugsweise die Oberflächenstruktur durch Vertiefungen und/oder Erhebungen gebildet ist.According to the invention this is achieved in that the gas exchange channel, at least in sections, at least one surface structure, wherein preferably the surface structure is formed by depressions and / or elevations.
Die Vertiefungen oder Erhebungen können regelmäßig oder unregelmäßig angeordnet sein.The depressions or elevations may be arranged regularly or irregularly.
Besonders vorteilhaft ist es, wenn die Vertiefungen oder Erhebungen im Bereich zumindest einer Strömungsumlenkung des Gaswechselkanals angeordnet sind, wobei vorzugsweise die Vertiefungen oder Erhebungen im Bereich einer Bogeninnenseite der Strömungsumleitung angeordnet sind. • · - 2 - • · Μ ·· ·· ·♦····It is particularly advantageous if the depressions or elevations are arranged in the region of at least one flow deflection of the gas exchange channel, the depressions or elevations preferably being arranged in the region of an arc inside of the flow diversion. • · - 2 - • · Μ ·· ··· ♦ ····
Die Vertiefungen oder Erhebungen können gusstechnisch hergestellt werden.The depressions or elevations can be produced by casting.
In einer bevorzugten Ausführung ist vorgesehen, dass die Vertiefungen oder Erhebungen im Wesentlichen teilkugelförmig geformt sind. Alternativ dazu kann auch vorgesehen sein, dass die Vertiefungen oder Erhebungen im Grundriss elliptisch oder eckig ausgebildet sind.In a preferred embodiment, it is provided that the recesses or elevations are formed substantially part-spherical. Alternatively, it can also be provided that the recesses or elevations in the plan are elliptical or angular.
Die Höhe der Erhebungen oder Vertiefungen betragt mindestens 0,1 mm. Der größte Durchmesser und der Abstand zwischen den Vertiefungen oder Erhebungen sollte mindestens 1 mm betragen.The height of the elevations or depressions is at least 0.1 mm. The largest diameter and the distance between the depressions or elevations should be at least 1 mm.
In weiterer Ausführung der Erfindung kann vorgesehen sein, dass die Vertiefungen oder Erhebungen, zumindest teilweise, unterschiedliche Höhen, Durchmesser, Abstände und/oder Formen aufweisen.In a further embodiment of the invention it can be provided that the depressions or elevations, at least partially, have different heights, diameters, distances and / or shapes.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert.The invention will be explained in more detail below with reference to FIGS.
Es zeigen Fig. 1 einen erfindungsgemäßen Zylinderkopf in einem Querschnitt, Fig. 2 den Zylinderkopf in einem Schnitt gemäß der Linie II-II in Fig. 1 und Fig. 3 einen Gusskern zur Herstellung der Gaswechselkanäle in einer Schrägansicht.1 shows a cylinder head according to the invention in a cross section, Fig. 2 shows the cylinder head in a section along the line II-II in Fig. 1 and Fig. 3 a casting core for the production of the gas exchange channels in an oblique view.
Die Fig. 1 und Fig. 2 zeigen einen Zylinderkopf 1 mit Auslasskanäle 2 bildenden Gaswechselkanälen 3. Im Bereich der Bogeninnenseite 5 einer Strömungsumlen-kung 4 der Gaswechselkanäle 3 sind durch Erhebungen 6 gebildete Oberflächenstrukturen 7 vorgesehen. Die im Wesentlichen teilkugelförmigen Erhebungen 6 sind regelmäßig angeordnet und bilden im vorliegenden Fall ein Sechseck aus.1 and 2 show a cylinder head 1 with outlet channels 2 forming gas exchange channels 3. In the area of the arc inside 5 of a Strömungsumlen-kung 4 of the gas exchange channels 3 surface structures 7 formed by elevations 6 are provided. The substantially part-spherical elevations 6 are regularly arranged and form a hexagon in the present case.
Alternativ zu den Erhebungen 6 können im Bereich der Bogeninnenseite 5 auch teilkugelförmige Vertiefungen vorgesehen sein. Neben einer teilkugelförmigen Ausbildung können die Vertiefungen oder Erhebungen 6 auch andere geometrische Formen, beispielsweise kerbenartig, gestaltet sein.As an alternative to the elevations 6, it is also possible for part-spherical depressions to be provided in the region of the arc inside 5. In addition to a part-spherical design, the depressions or elevations 6, other geometric shapes, for example, like a box, be designed.
Fig. 3 zeigt einen Gusskern 8 für die Gaswechselkanäle 3 mit Formbereichen 9 für die Oberflächenstrukturen 7.FIG. 3 shows a casting core 8 for the gas exchange channels 3 with molding regions 9 for the surface structures 7.
Die in ablösekritischen Bereichen angeordneten Oberflächenstrukturen 7 bewirken Mikroturbolenzen, die einer Strömungsablösung entgegenwirken.The arranged in detachment critical areas surface structures 7 cause microturbulence, which counteract a flow separation.
Claims (12)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0127609A AT507010B1 (en) | 2009-08-13 | 2009-08-13 | CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE |
| DE102010036848A DE102010036848A1 (en) | 2009-08-13 | 2010-08-04 | Cylinder head for an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0127609A AT507010B1 (en) | 2009-08-13 | 2009-08-13 | CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AT507010A2 true AT507010A2 (en) | 2010-01-15 |
| AT507010A3 AT507010A3 (en) | 2010-05-15 |
| AT507010B1 AT507010B1 (en) | 2010-12-15 |
Family
ID=41480263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT0127609A AT507010B1 (en) | 2009-08-13 | 2009-08-13 | CYLINDER HEAD FOR AN INTERNAL COMBUSTION ENGINE |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT507010B1 (en) |
| DE (1) | DE102010036848A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19613304A1 (en) | 1996-04-03 | 1997-10-09 | Ernst Koelle | Upper surface structure for outer skin of bodies in flow medium |
| JPH1182860A (en) | 1997-08-30 | 1999-03-26 | Junichi Hirata | Flow rate increase channel |
| DE19840303A1 (en) | 1998-09-04 | 2000-03-09 | Brandhorst Ingo | Micro turbulence generator system to reduce flow losses for motor vehicles consists of grained parts imprinted on self-adhesive foil for e.g. Formula 1 racing cars |
| DE10347022A1 (en) | 2003-10-07 | 2005-05-04 | Nikolaus Vida | Transportation and heat exchange device for flowing media e.g. gases, liquids, multipurpose mixture, has several dimples provided and arranged periodically on at least one surface on which media flows |
-
2009
- 2009-08-13 AT AT0127609A patent/AT507010B1/en not_active IP Right Cessation
-
2010
- 2010-08-04 DE DE102010036848A patent/DE102010036848A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010036848A1 (en) | 2011-02-17 |
| AT507010B1 (en) | 2010-12-15 |
| AT507010A3 (en) | 2010-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM01 | Lapse because of not paying annual fees |
Effective date: 20160813 |