WO2004025106A1 - Zylinderlaufbuchse für ein zylinderkurbelgehäuse - Google Patents
Zylinderlaufbuchse für ein zylinderkurbelgehäuse Download PDFInfo
- Publication number
- WO2004025106A1 WO2004025106A1 PCT/EP2003/008971 EP0308971W WO2004025106A1 WO 2004025106 A1 WO2004025106 A1 WO 2004025106A1 EP 0308971 W EP0308971 W EP 0308971W WO 2004025106 A1 WO2004025106 A1 WO 2004025106A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder liner
- cylinder
- contouring
- cutting
- tube
- Prior art date
Links
Classifications
-
- 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
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
- F16J10/04—Running faces; Liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- 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
- F02F1/004—Cylinder liners
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/4927—Cylinder, cylinder head or engine valve sleeve making
- Y10T29/49272—Cylinder, cylinder head or engine valve sleeve making with liner, coating, or sleeve
Definitions
- the invention relates to a cylinder liner according to claim 1 and a method according to claim 5.
- Cylinder crankcases in particular of light metal engines, are often locally reinforced by a cylinder liner in the area of the cylinder liners.
- Cast-in cylinder liners usually run completely through the so-called cylinder tube from a crank chamber to a cylinder head parting surface.
- the cast-in cylinder liner may move towards the crankcase. This is called setting the socket.
- the setting can be avoided in a relatively complex manner by casting methods or by surface treatment of the bushing.
- the object of the invention is to provide an inexpensive device and method to prevent the cylinder liner from being set.
- the object is achieved in a cylinder liner according to claim 1 and in a method for producing a cylinder liner according to claim 5.
- the cylinder liner according to the invention according to claim 1 has a contour on one end face.
- the contouring causes the cylinder liner to be supported on a quill in a die casting tool in such a way that at least one highest elevation of the cylinder liner bears against an edge of the quill on the tool side. This edge in turn forms in the cylinder crankcase the limitation of a cylinder tube to a crank chamber.
- Recesses in the contouring of the cylinder liner are filled in the cylinder crankcase by a metal of the cylinder crankcase (casting).
- a cylinder running surface is formed by the crankcase metal in the region of the recesses in the contouring.
- the filling of the contour by casting material has the effect that the cylinder liner is supported and thus an axial movement of the cylinder liner in the direction of the crank chamber is prevented.
- the contouring saves the cylinder liner material, which is generally more expensive than the material of the overmold.
- the cylinder liners are usually separated from a longer tube.
- the material saving of the cylinder liner can be increased considerably if the contouring of a cylinder liner has the negative image of the contouring of a further, corresponding cylinder liner.
- the material saving can be half the maximum contour depth per cylinder liner.
- each cylinder liner has a periodic symmetry. It is then also expedient for the corresponding cylinder liner to have the same, but phase-shifted periodic symmetry.
- Another component of the invention is a method for producing a cylinder liner according to claim 5.
- the method according to the invention in which cylinder liners are separated from a tube, is characterized in that a visual cutting tool describes an axial movement with respect to the tube, whereas the tube itself revolves is moved.
- Suitable control enables the material-saving cutting out of the cylinder liners according to the invention. In comparison to a conventional saw cut, 3 mm to 4 mm material can be saved.
- the cylinder liners are separated from the inside to the outside. This prevents a burr from remaining in the interior of the cylinder liner without the need for reworking.
- Water jet cutting, laser cutting, roller cutting, fine cutting or fine blanking are available as cutting processes.
- Another advantageous method is the so-called punching rack, which is based on fineblanking, but in which the cutting process is supported by an axially applied force.
- 1 is a cylinder liner with contouring on a quill in a die casting tool
- 2 a cylinder liner with contouring in a cylinder crankcase
- Fig. 6 is a cylinder liner with sinusoidal contouring and a maximum
- Fig. 7 shows a separation process of two cylinder liners from a tube.
- a cylinder liner 2 according to the invention is shown, which is placed on a quill 4 of a die casting tool, not shown, for a cylinder crankcase.
- the cylinder liner 2 (socket) has a contour 6 on the end face 5 facing a crank chamber 14.
- the contouring 6 is here, for example, approximately sinusoidal and has a plurality of depressions 10, each with a minimum 11 and as many elevations 8 (maxima).
- the socket consists of a hypereutectic aluminum-silicon alloy.
- the socket 2 is supported on an edge 12 of the sleeve 4 by the maxima.
- the edge 12 of the sleeve 4 forms the crank chamber side 14 in the cylinder crankcase.
- the opposite side of the bushing 2 is delimited by a cylinder head separating surface 16.
- a maxima 8 is preferably arranged on the quill 4 in such a way that it largely shields the socket 2 from an aluminum stream during the die casting. This measure reduces the back-pouring of the bush, ie the penetration of molten aluminum between the bush and the sleeve.
- the depressions 10 are filled with a material of the cylinder crankcase (casting). This material consists of a conventional casting alloy, for example AlSi9Cu3.
- a lower edge 19 of the socket 2 lies - apart from the maxima 8 - on the encapsulation material. This prevents the bush from being set in the direction of the crank chamber 14. Furthermore, this prevents the possibility that coolant can get into the oil space through a gap that may exist between the bushing 2 and the encapsulation 18 (not shown).
- Line 17 marks the bottom dead center or turning point of a lowermost piston ring of a cylinder (not shown).
- the minima 11 of the contouring 6 are expediently guided up to this line 17. Deeper contouring is fundamentally possible, but would negatively influence the tribological properties of cylinder running surfaces 15 and possibly lead to increased wear.
- the depressions are between 10 mm and 30 mm, preferably between 15 mm and 25 mm.
- the cylinder running surfaces are formed above the line 17 by the bushing 2 and below the line 17 in equal parts by the bushing 2 and the encapsulation material 18.
- FIGS. 3 to 6 show examples of the contouring of a cylinder liner.
- the contouring can have any shape, but considering an optimal material saving, periodic and symmetrical contouring is advisable.
- FIG. 3 shows a sinusoidal contour 6-3 of the socket 2-3 with eight maxima 8-3 and eight minima 11-3.
- the contouring 6-4 of the bush 2-4 is crenellated with seven maxima 8-4 and seven minima 11-4. (The second digit of the reference symbols stands for the corresponding figure).
- the number of maxima can also be reduced, e.g. B to two maxima 8-5 in FIG. 5 and to a maximum 8-6 in FIG. 6. Also conceivable as a contour, but not shown here, would be a zigzag pattern, a trapezoidal pattern or another curve shape.
- a tube 20 which consists of a kneaded ubereutectic Al-Si alloy, is made by a cutting tool. 22 a contour 6 cut out according to FIG. 7.
- the cutting tool 22 is moved axially with respect to the tube 20, a rotational movement of the tube 20 being superimposed on this movement. The movements are controlled centrally and are tailored to the contour to be achieved.
- force F can be applied in axial directions. Starting from the cut that is made by the cutting tool 22, the force F causes a so-called cracking along the contouring 6.
- the process is referred to as punch punching.
- the cutting tool 22 is moved along the contour 6-5 according to the method described above. This is only used here, for example, and corresponds to the contouring 6 shown in FIG. 5. After the separation process, there are two identical bushings 2 and 3.
- a vertical cut 23 following each of two bushings can be made by a conventional saw cut or by a so-called roller cutting.
- the method also with low pressure differential hurdle analogous to the method of Figure 7 are applicable.
- Laser cutting, the "water jet cutting or fine blanking are.
- the cutting is advantageously carried out from the inside to the outside in order to avoid burr formation. Burr formation is easier to avoid when laser welding. Due to the complexity of the equipment, laser welding can also be carried out from the outside.
- tribologically suitable materials can be used for the bushing according to the invention.
- these are hypereutectic Al-Si alloys, preferably alloys with an Si content between 15% and 25%, and iron-based alloy.
- material savings also mean weight savings.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03794872A EP1530678A1 (de) | 2002-08-24 | 2003-08-13 | Zylinderlaufbuchse für ein zylinderkurbelgehäuse |
US10/525,557 US7240608B2 (en) | 2002-08-24 | 2003-08-13 | Cylinder liner for a cylinder crankcase |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002138873 DE10238873B4 (de) | 2002-08-24 | 2002-08-24 | Zylinderlaufbuchse für ein Zylinderkurbelgehäuse |
DE10238873.3 | 2002-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004025106A1 true WO2004025106A1 (de) | 2004-03-25 |
Family
ID=31895577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/008971 WO2004025106A1 (de) | 2002-08-24 | 2003-08-13 | Zylinderlaufbuchse für ein zylinderkurbelgehäuse |
Country Status (4)
Country | Link |
---|---|
US (1) | US7240608B2 (de) |
EP (1) | EP1530678A1 (de) |
DE (1) | DE10238873B4 (de) |
WO (1) | WO2004025106A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2008740A1 (de) * | 2007-06-29 | 2008-12-31 | Trimet Aluminium AG | Verfahren und Vorrichtung zum Druckgießen von gegliederten Metallgussstücken |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1899592A1 (de) * | 2005-07-06 | 2008-03-19 | Team Orion Europe SA | Zweitaktmotor, insbesondere für modelle von land-, wasser oder luftfahrzeugen |
DE102007003135B3 (de) * | 2007-01-16 | 2008-03-06 | Peak Werkstoff Gmbh | Verfahren zur Herstellung eines Zylinderkurbelgehäuses mit mehreren Zylinderlaufbuchsen sowie kurze Zylinderlaufbuchse mit daran festgelegtem Materialstreifen |
US10233862B1 (en) * | 2016-11-16 | 2019-03-19 | Brunswick Corporation | Marine engines having a cylinder block with cylinder liner |
US11499499B1 (en) * | 2021-10-05 | 2022-11-15 | Brunswick Corporation | Marine engines, cylinder liners for marine engines, and methods and assemblies for forming marine engines |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB390625A (en) * | 1932-03-11 | 1933-04-13 | Cecil Francis Simmonds | Improvements in or relating to the fitting of liners to cylinder bores |
DE1291865B (de) * | 1959-05-07 | 1969-04-03 | Nat Lead Co | Verfahren zur Herstellung eines Verbunddruckgussstueckes aus Aluminium mit einer zylindrischen Innenschicht aus Stahl |
DE4230584A1 (de) * | 1992-09-12 | 1994-03-17 | Bayerische Motoren Werke Ag | Verfahren zum Herstellen eines Zylinderblocks einer mehrzylindrigen Brennkraftmaschine |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1106977A (en) * | 1914-08-11 | Maschf Augsburg Nuernberg Ag | Cylinder. | |
US982739A (en) * | 1910-11-17 | 1911-01-24 | Allis Chalmers | Cylinder-liner. |
US1562555A (en) * | 1919-06-05 | 1925-11-24 | Harley Davidson Motor Co Inc | Cylinder |
US1836798A (en) * | 1929-08-13 | 1931-12-15 | Sulzer Ag | Liner for the cylinders of reciprocating engines |
US3903951A (en) * | 1972-01-14 | 1975-09-09 | Toyota Motor Co Ltd | Method of manufacturing aluminum alloy cylinders and cylinder liners for internal combustion engines |
JPS60178958A (ja) * | 1984-02-24 | 1985-09-12 | Yamaha Motor Co Ltd | 2サイクルエンジン用シリンダスリ−ブの製造方法 |
SE470055B (sv) * | 1991-03-05 | 1993-11-01 | Volvo Ab | Sätt och verktyg för pressgjutning |
US5080056A (en) * | 1991-05-17 | 1992-01-14 | General Motors Corporation | Thermally sprayed aluminum-bronze coatings on aluminum engine bores |
US5320158A (en) * | 1993-01-15 | 1994-06-14 | Ford Motor Company | Method for manufacturing engine block having recessed cylinder bore liners |
DE19755557C1 (de) * | 1997-12-13 | 1999-02-04 | Vaw Alucast Gmbh | Gießform zur Herstellung eines Motorblocks |
DE19906026B4 (de) * | 1999-02-12 | 2006-10-05 | Audi Ag | Vorrichtung zum Eingießen zumindest einer Buchse in ein Gehäuse |
DE19909135A1 (de) | 1999-03-03 | 2000-09-07 | Roellgen Bernd | Flaches Kennzeichnungselement |
DE19937934A1 (de) * | 1999-08-11 | 2001-02-15 | Bayerische Motoren Werke Ag | Zylinderkurbelgehäuse, Verfahren zur Herstellung der Zylinderlaufbuchsen dafür und Verfahren zur Herstellung des Zylinderkurbelgehäuses mit diesen Zylinderlaufbuchsen |
DE10009135A1 (de) * | 2000-02-26 | 2001-08-30 | Volkswagen Ag | Laufbuchsen aus einer Aluminiumlegierung zum Eingießen in Zylinderblöcke aus Leichtmetall von Verbrennungsmotoren und Verfahren zu deren Herstellung und Einguß |
DE20121215U1 (de) * | 2001-10-31 | 2002-04-11 | Daimler Chrysler Ag | Zylinderkurbelgehäuse mit einer Zylinderlaufbuchse und Gießwerkzeug |
DE10153721C5 (de) * | 2001-10-31 | 2011-04-28 | Daimler Ag | Gießwerkzeug zur Herstellung eines Zylinderkurbelgehäuses |
-
2002
- 2002-08-24 DE DE2002138873 patent/DE10238873B4/de not_active Expired - Fee Related
-
2003
- 2003-08-13 US US10/525,557 patent/US7240608B2/en not_active Expired - Fee Related
- 2003-08-13 EP EP03794872A patent/EP1530678A1/de not_active Withdrawn
- 2003-08-13 WO PCT/EP2003/008971 patent/WO2004025106A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB390625A (en) * | 1932-03-11 | 1933-04-13 | Cecil Francis Simmonds | Improvements in or relating to the fitting of liners to cylinder bores |
DE1291865B (de) * | 1959-05-07 | 1969-04-03 | Nat Lead Co | Verfahren zur Herstellung eines Verbunddruckgussstueckes aus Aluminium mit einer zylindrischen Innenschicht aus Stahl |
DE4230584A1 (de) * | 1992-09-12 | 1994-03-17 | Bayerische Motoren Werke Ag | Verfahren zum Herstellen eines Zylinderblocks einer mehrzylindrigen Brennkraftmaschine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2008740A1 (de) * | 2007-06-29 | 2008-12-31 | Trimet Aluminium AG | Verfahren und Vorrichtung zum Druckgießen von gegliederten Metallgussstücken |
Also Published As
Publication number | Publication date |
---|---|
US20060112924A1 (en) | 2006-06-01 |
EP1530678A1 (de) | 2005-05-18 |
US7240608B2 (en) | 2007-07-10 |
DE10238873B4 (de) | 2004-09-09 |
DE10238873A1 (de) | 2004-03-25 |
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