DE10011155A1 - Aluminium piston, particularly for diesel engine, has intermetallic ring support-cooling channel combination connected with basic material - Google Patents
Aluminium piston, particularly for diesel engine, has intermetallic ring support-cooling channel combination connected with basic materialInfo
- Publication number
- DE10011155A1 DE10011155A1 DE10011155A DE10011155A DE10011155A1 DE 10011155 A1 DE10011155 A1 DE 10011155A1 DE 10011155 A DE10011155 A DE 10011155A DE 10011155 A DE10011155 A DE 10011155A DE 10011155 A1 DE10011155 A1 DE 10011155A1
- Authority
- DE
- Germany
- Prior art keywords
- ring carrier
- sheet metal
- metal part
- piston
- flank
- 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- Withdrawn
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/22—Rings for preventing wear of grooves or like seatings
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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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
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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
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- 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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Die Erfindung betrifft einen Aluminium-Kolben für Verbren nungsmotoren, insbesondere Dieselmotoren, mit einer inter metallisch mit dem Grundmaterial verbundenen Ringträger- Kühlkanal-Kombination nach dem Oberbegriff des Anspruchs 1.The invention relates to an aluminum piston for burning voltage engines, especially diesel engines, with an inter ring carrier connected metallically to the base material Cooling channel combination according to the preamble of claim 1.
Derartige Kolben sind bekannt aus der FR 2044242, der DE 72 12 560 U, der DE 26 24 412 A, der DE 76 17 370 U, der US 4,907,545, der JP 4-300466 A, der JP 5-69240 A, JP 5-240347 A und der JP 11-82738 A.Such pistons are known from FR 2044242, the DE 72 12 560 U, DE 26 24 412 A, DE 76 17 370 U, the US 4,907,545, JP 4-300466 A, JP 5-69240 A, JP 5-240347 A and JP 11-82738 A.
Bei allen bekannten Ringträger-Kühlkanal-Kombinationen wird ein Blechteil an den Ringträger angesetzt, entweder mit stumpfem Stoß oder mit Überlappung. Wenn das Blechteil mit Überlappung an die obere oder untere Flanke eines Ringträ gers angesetzt und verschweißt wird, so wird die Länge der Überlappung regelmäßig klein gehalten und auf das Maß be grenzt, das zur Erzielung einer brauchbaren Schweißverbin dung notwendig ist. Es sind keine Ringträger-Kühlkanal-Kom binationen bekannt, bei denen ein Blechteil mit Überlappung an die Flanken eines Ringträgers angesetzt ist und das Blechteil die Flanken des Ringträgers nach radial außen deutlich über den Nutgrundradius hinweg überlappt.In all known ring carrier-cooling channel combinations a sheet metal part attached to the ring carrier, either with butt joint or with overlap. If the sheet metal part with Overlap on the upper or lower flank of a ring beam gers is attached and welded, the length of the Overlap regularly kept small and be to the measure limits that to achieve a usable weld joint is necessary. They are not ring carrier cooling channel com binations known in which a sheet metal part with overlap is attached to the flanks of a ring carrier and that Sheet metal part the flanks of the ring carrier radially outwards clearly overlaps across the groove base radius.
Bei hoch belasteten gattungsgemäßen Dieselkolben besteht die Gefahr einer Schädigung der intermetallischen Bindung.In the case of highly loaded generic diesel pistons the risk of damage to the intermetallic bond.
Die Erfindung beschäftigt sich daher mit dem Problem, Bin dungsrisse in der intermetallischen Bindung zu vermeiden. The invention is therefore concerned with the problem, Bin avoid cracks in the intermetallic bond.
Dieses Problem wird gelöst durch die kennzeichnenden Merk male des Anspruchs 1. Vorteilhafte Weiterbildungen sind Ge genstand der Unteransprüche.This problem is solved by the characteristic note male of claim 1. Advantageous further developments are Ge subject of the subclaims.
Durch die weitgehende Überlappung der Flanken des Ringträ gers durch das Blechteil wird in kritischen Bereichen das Spannungsniveau vermindert. Gemäß Anspruch 1 wird ausgehend von einem dem Nutgrunddurchmesser entsprechenden Radius ei ne Erstreckung des Blechteils in radialer Richtung und eine entsprechende Überlappung des Ringträgers an zumindest ei ner Nutflanke durch das Blechteil über mindestens zusätz lich 50% der Nuttiefe beansprucht.Due to the extensive overlap of the flanks of the Ringträ gers through the sheet metal part in critical areas Voltage level decreased. According to claim 1 is starting from a radius corresponding to the groove base diameter ei ne extension of the sheet metal part in the radial direction and one corresponding overlap of the ring carrier on at least egg ner flank through the sheet metal part via at least additional 50% of the groove depth.
Im Idealfall werden Oberflanke und Unterflanke des Ringträ gers komplett vom Blechteil überlappt.Ideally, the top flank and bottom flank of the ring beam completely overlapped by the sheet metal part.
Das Einformen des Ringträgers in das Blechteil erfolgt vor zugsweise, indem der Ringträger auf ein zunächst ebenes kreisringförmiges Blechteil gelegt wird und anschließend das Blech um den Ringträger herumgeformt wird, wie in der DE 26 24 412 A beschrieben.The ring carrier is molded into the sheet metal part before preferably by placing the ring carrier on an initially flat surface circular sheet metal part is placed and then the sheet is formed around the ring carrier, as in the DE 26 24 412 A described.
Die Flanken des Ringträgers müssen nicht notwendigerweise exakt radial verlaufen - wie in den Zeichnungen dargestellt -, sondern können durchaus bis zu 20° Abwei chung vom exakt radialen Verlauf aufweisen. Dadurch kann z. B. der Kühlkanal etwas höher ausgeführt werden als der Ringträger.The flanks of the ring carrier do not necessarily have to run exactly radially - as in the drawings shown -, but can quite up to 20 ° deviation have the exact radial course. This can, for. B. the cooling channel is designed to be slightly higher than that Ring bearer.
Die das Blechteil und den Ringträger verbindenden Schweiß nähte können entweder als Radialnähte etwa parallel zu den Flanken des Ringträgers oder als Axialnähte senkrecht zu den Flanken des Ringträgers liegen.The sweat connecting the sheet metal part and the ring carrier Seams can either be radial seams approximately parallel to the Flanks of the ring carrier or as axial seams perpendicular to the flanks of the ring bearer.
Die Erfindung wird im folgenden anhand von Zeichnungen nä her erläutert. Es zeigt:The invention is based on drawings ago explained. It shows:
Fig. 1 einen erfindungsgemäßen Kolben im Querschnitt Fig. 1 shows a piston according to the invention in cross section
Fig. 2 eine Ringträger-Kühlkanal-Kombination mit Radialschweißnähten Fig. 2 is a ring carrier-cooling channel combination with radial welds
Fig. 3 eine Ringträger-Kühlkanal-Kombination mit Axialschweißnähten Fig. 3 is a ring carrier-cooling channel combination with axial welds
Fig. 4 eine zweite Ringträger-Kühlkanal-Kombination mit Axialschweißnähten. Fig. 4 shows a second ring carrier-cooling channel combination with axial welds.
In der Zeichnung ist der Nutgrundradius als Bezugsmaß mit RN bezeichnet.In the drawing, the base groove radius is included as a reference dimension Designated RN.
Ein DI-Dieselkolben 1 weist eine Ringträger-Kühlkombination mit einem Ringträger 2 mit einer oberen Flanke 3 und einer unteren Flanke 4 und mit einem Blechteil 5 auf. Das Blech teil 5 erstreckt sich in Richtung nach radial außen an der unteren Flanke 4 ausgehend vom Nutgrundradius 8 einer Nut 7 über die gesamte Nuttiefe T und an der oberen Flanke 3 aus gehend vom Nutgrundradius über etwas mehr als 50% der Nut tiefe. Das Blechteil überlappt daher in radialer Richtung nicht nur - wie im Stand der Technik bekannt - ein Stegteil 6 des Ringträgers, sondern auch zumindest 50% der Nuttiefe gerechnet ab Nutgrundradius RN.A DI diesel piston 1 has a ring carrier cooling combination with a ring carrier 2 with an upper flank 3 and a lower flank 4 and with a sheet metal part 5 . The sheet metal part 5 extends radially outwards on the lower flank 4 starting from the groove base radius 8 of a groove 7 over the entire groove depth T and on the upper flank 3 going from the groove base radius over a little more than 50% of the groove depth. The sheet metal part therefore not only overlaps in the radial direction - as is known in the prior art - a web part 6 of the ring carrier, but also at least 50% of the groove depth calculated from the groove base radius RN.
In den Fig. 2, 3 und 4 ist die Lage der Radialschweiß nähte und der Axialschweißnähte dargestellt.In Figs. 2, 3 and 4, the position of the radial weld seams is shown the Axialschweißnähte.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10011155A DE10011155A1 (en) | 2000-03-07 | 2000-03-07 | Aluminium piston, particularly for diesel engine, has intermetallic ring support-cooling channel combination connected with basic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10011155A DE10011155A1 (en) | 2000-03-07 | 2000-03-07 | Aluminium piston, particularly for diesel engine, has intermetallic ring support-cooling channel combination connected with basic material |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10011155A1 true DE10011155A1 (en) | 2001-09-13 |
Family
ID=7633883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10011155A Withdrawn DE10011155A1 (en) | 2000-03-07 | 2000-03-07 | Aluminium piston, particularly for diesel engine, has intermetallic ring support-cooling channel combination connected with basic material |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10011155A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003054371A1 (en) * | 2001-12-21 | 2003-07-03 | Karl Merz | Piston ring carrier with a cooling channel |
DE102006043302A1 (en) * | 2006-09-14 | 2008-03-27 | Mahle International Gmbh | Ring carrier for piston of combustion engine, has cooling duct part firmly connected together with ring carrier part to form closed cooling duct, where gas-impermeable barrier layer is integrated in ring carrier part at cooling duct |
DE102006043301A1 (en) * | 2006-09-14 | 2008-03-27 | Mahle International Gmbh | Ring support has ring support part and cooling channel part, which is connected with ring support part and formed together with ring support part of closed cooling channel, and surface of ring support part that pointing to cooling channel |
WO2008122259A1 (en) * | 2007-04-05 | 2008-10-16 | Mahle International Gmbh | Piston for an internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE695709C (en) * | 1938-08-17 | 1940-08-31 | Argus Motoren Ges M B H | Pistons for two-stroke engines |
-
2000
- 2000-03-07 DE DE10011155A patent/DE10011155A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE695709C (en) * | 1938-08-17 | 1940-08-31 | Argus Motoren Ges M B H | Pistons for two-stroke engines |
Non-Patent Citations (1)
Title |
---|
JP 03138438 A.,In: Patent Abstracts of Japan * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003054371A1 (en) * | 2001-12-21 | 2003-07-03 | Karl Merz | Piston ring carrier with a cooling channel |
DE102006043302A1 (en) * | 2006-09-14 | 2008-03-27 | Mahle International Gmbh | Ring carrier for piston of combustion engine, has cooling duct part firmly connected together with ring carrier part to form closed cooling duct, where gas-impermeable barrier layer is integrated in ring carrier part at cooling duct |
DE102006043301A1 (en) * | 2006-09-14 | 2008-03-27 | Mahle International Gmbh | Ring support has ring support part and cooling channel part, which is connected with ring support part and formed together with ring support part of closed cooling channel, and surface of ring support part that pointing to cooling channel |
WO2008122259A1 (en) * | 2007-04-05 | 2008-10-16 | Mahle International Gmbh | Piston for an internal combustion engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |