EP1721072A1 - Cylinder sleeve for an internal combustion engine - Google Patents
Cylinder sleeve for an internal combustion engineInfo
- Publication number
- EP1721072A1 EP1721072A1 EP05714992A EP05714992A EP1721072A1 EP 1721072 A1 EP1721072 A1 EP 1721072A1 EP 05714992 A EP05714992 A EP 05714992A EP 05714992 A EP05714992 A EP 05714992A EP 1721072 A1 EP1721072 A1 EP 1721072A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liner
- bushing
- bushings
- roughening
- liner according
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
-
- 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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
-
- 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
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0436—Iron
- F05C2201/0439—Cast iron
-
- 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
- F05C2201/90—Alloys not otherwise provided for
- F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37
-
- 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
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
-
- 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 liner for an internal combustion engine according to the preamble of claim 1.
- the roughening on the outer surface of the rough cast bushing provides a very large outer surface in contact with the material of the engine block, through which the heat of combustion can be easily dissipated.
- the large number of surveys with undercuts results in tight clamping between the bushing and engine block, which prevents the formation of a thermally insulating gap between the bushing and engine block given different expansion coefficients due to different materials of the bushing and engine block.
- 1 is a bushing package consisting of 4 rough cast iron bushings for use in a four-cylinder engine
- FIG. 8 shows an arrangement of 4 rough cast iron bushes with an elliptical outer contour according to FIG. 5 for use in a four-cylinder engine
- FIG. 12 shows an arrangement of 4 rough cast iron bushes with an elliptical outer contour according to FIG. 9 for use in a four-cylinder engine
- FIG. 26 shows an enlarged illustration of the spacer according to FIG. 25.
- FIG. 1 shows a perspective view
- FIG. 2 shows a top view of a bushing package 5 consisting of four rough cast bushings 1 to 4.
- the four rough cast bushings 1 to 4 have roughened outer surfaces over their entire axial length.
- the common wall areas 6 to 8 of adjoining bushes 1 to 4 have a web width x which corresponds to the other wall thickness of the rough cast bushings 1 to 4.
- the entire bushing package 5 is produced in a single casting process from an aluminum-silicon alloy, using the free-standing casting process or the “lost-foarrY” casting process. Both casting processes are known from the prior art (see DE 199 58 185 A1 for “released” -foam “casting process) and are not explained in more detail here.
- the entire bushing package 5 is placed in the mold provided for this purpose and cast with casting material.
- the cross sections 9 and 10 shown in FIGS. 3 and 4 through parts of the wall of the rough cast bushings show configurations of the roughening, the roughening According to cross section 9 irregularly distributed elevations 11 and the roughening according to cross section 10 has regularly distributed elevations 12.
- the elevations 10 and 11 are shaped such that they form undercuts 13 and 14, the function of which is to anchor the rough cast bushings in the encapsulation material of the engine block.
- the height of the elevations 11 and 12 and thus the depth y of the roughening have a value of 0.2 mm to 2 mm.
- the flattened rough cast bushings shown in cross section in FIGS. 5 to 15 can consist of cast iron and are then preferably produced by centrifugal casting. However, they can also consist of an aluminum-silicon alloy, which opens up the possibility of producing the rough cast bushings using the upright casting process, the centrifugal casting process or the “lost foam” casting process. Ultimately, there is the possibility of producing the rough cast bushings from a sintered metal. Here, the bushings can get their final, one- or two-sided flattened shape as part of the casting process. However, there is also the option of flattening the bushings after machining by machining (milling).
- FIG. 5 A bushing 15 is shown with an elliptical cross-sectional shape, variable thickness of the bushing wall 19 and constant depth of the roughening 20th
- FIG. 6 A bushing 16 is shown with a variable thickness of the bushing wall 19 ', with a constant depth of the roughening 20 and with an outer shape which in cross section consists of four circular segments 21 to 24 of approximately the same size, the opposing segments 21 and 22 thicker areas of the bushing wall 19 'and the opposing segments 23 and 24 thinner areas of the bushing wall 19', that is, their flattened areas delimit outwards.
- FIG. 7 A bushing 17 is shown with a variable thickness of the bushing wall 19 ", with a constant depth of the roughening 20 and with an outer shape, which in cross section consists of two opposing arcuate segments 25 and 26 and two opposing, flat segments 27 and 28. The flattened regions of the bushing 17 lying opposite one another are delimited to the outside by the segments 27 and 28.
- FIG. 8 shows a possibility of arranging the rough cast bushings 15 with an elliptical outer contour next to one another in a space-saving manner, so that a bushing package 18 suitable for a four-cylinder engine results.
- the minor axis regions of the elliptical contour limit the flattened regions of the bushes 15, which flattened regions are at a distance from one another when the bushes 15 are arranged to form a bushing package 18.
- FIG. 9 A bushing 29 is shown with a constant thickness of the bushing wall 32, with a variable depth of the roughening 33 and with an outer contour that is elliptical in cross section, which is similar to the outer shape of the bushing 15 according to FIG. 5.
- Fig. 10 A bushing 30 is shown with a constant thickness of the bushing wall 32, with a variable depth of the roughening 33 'and with an outer contour consisting of segments in the form of an arc of a circle, which is similar to the outer shape of the bushing 16 according to FIG. 6.
- FIG. 11 A bushing 31 is shown with a constant thickness of the bushing wall 32, with a variable depth of the roughening 33 "and with an outer contour formed in cross-section from two circular arc-shaped segments and two flat segments, which are opposite each other, which corresponds to the outer shape of the in Fig. 7 shown socket 17 is similar.
- the rough cast bushings 29 to 31 shown in FIGS. 9 to 11 are produced using the centrifugal casting process, the variation in the depth of the roughenings 33, 33 'and 33 "being achievable by appropriate setting of the process parameters.
- FIG. 12 shows an arrangement of 4 of the rough cast bushings 29 shown in FIG. 9 to form a bushing pack 34 similar to the bushing pack 18 shown in FIG. 8 for use in a four-cylinder engine.
- the rough cast bushings of the type shown can be arranged side by side at a distance z of 0.5 mm to 0.05 mm.
- Fig. 13 A bushing 35 is shown with a variable bushing wall thickness, constant depth of roughening and an elliptical outer contour which is similar to the outer contour of the bushing 15 shown in FIG. 5.
- the opposed, flattened bushing areas 38 and 39 have no rough cast structures.
- Fig. 14 A bushing 36 is shown with a variable bushing wall thickness, constant depth of roughening and an outer contour consisting of several segments in the form of a circular arc, which is similar to the outer shape of the bushing 16 shown in FIG. 6.
- the opposed, flattened bushing areas 40 and 41 have no rough cast structures.
- FIG. 15 A bushing 37 is shown with a variable bushing wall thickness, constant depth of roughening and an outer contour, which in cross section consists of two circular-arcuate and two flat segments, and which resembles the outer shape of the bushing 17 shown in FIG. 7.
- a flat segment 43 of the outer contour can be provided with a rough cast structure and that opposite segment 42 without a rough cast structure.
- those segments 38 to 42 of the outer contours of the rough cast bushings 35 to 37 that have no rough cast structures can already be produced in the course of the casting process.
- FIG. 17 A further possibility of connecting bushings to one another before casting into an engine block is shown in FIG. 17.
- Bridges 45 and 46 are used here, which are glued or soldered to adjoining areas of the end faces 47 and 48 or 49 and 50 of the sockets 51 and 52 and thereby connect the sockets 51 and 52.
- the bridges 45, 46 can have the shape of round disks. 19, the bridges 45 ', 46' can also be given the shape of rectangular disks.
- the bridges are made of light metal or a light metal alloy.
- the steps 53, 53 ' also have flattened areas 54, 54' (FIGS. 20, 23, 24), which must be aligned parallel to one another when the bushes are pushed onto quills, so that the sockets fit onto the quills, and therefore for this ensure that the bushings always take a clearly defined rotational position relative to one another.
- the bushings can be joined to one another via the flattened regions 54, 54 'of the steps 53, 53', ie glued to one another or soldered.
- the width of the gap 55 is 1 mm to 3.5 mm for a rough cast bushing with a wall thickness 56 of 2.5 mm and a depth 57 of the roughening of 1.5 mm.
- the web width 60 is 5.5 mm for bushes with a cylinder diameter 58 of 82 mm.
- a cylinder distance 59 of 87.5 mm can be achieved here.
- FIG. 23 shows a side view and a top view in FIG. 24 shows the flattened portion 61 molded into the sleeve surface, which in contrast to the rest of the sleeve surface has no roughening.
- opposite areas of the outer surfaces of bushings arranged next to one another can be made concave.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004007774A DE102004007774A1 (en) | 2004-02-18 | 2004-02-18 | Bushing for an internal combustion engine |
PCT/DE2005/000283 WO2005078265A1 (en) | 2004-02-18 | 2005-02-18 | Cylinder sleeve for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1721072A1 true EP1721072A1 (en) | 2006-11-15 |
EP1721072B1 EP1721072B1 (en) | 2017-04-05 |
Family
ID=34853501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05714992.4A Expired - Fee Related EP1721072B1 (en) | 2004-02-18 | 2005-02-18 | Cylinder sleeve for an internal combustion engine |
Country Status (8)
Country | Link |
---|---|
US (1) | US7806098B2 (en) |
EP (1) | EP1721072B1 (en) |
JP (1) | JP4653762B2 (en) |
KR (1) | KR101279846B1 (en) |
CN (1) | CN2900814Y (en) |
BR (1) | BRPI0507731A (en) |
DE (1) | DE102004007774A1 (en) |
WO (1) | WO2005078265A1 (en) |
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DE102007041010A1 (en) * | 2007-08-29 | 2009-03-05 | Mahle International Gmbh | Cylinder crankcase for an internal combustion engine |
JP5276530B2 (en) * | 2009-06-24 | 2013-08-28 | 日本ピストンリング株式会社 | Dry cylinder liner for internal combustion engines |
DE102009043566A1 (en) * | 2009-09-30 | 2011-04-07 | Mahle International Gmbh | Cylinder crankcase for use in internal combustion engine of motor vehicle, has cylinder liner or assembly comprising outer shell surface with axial area surrounded by chamber, where lower area of surface is connected with crankcase casting |
JP5572847B2 (en) * | 2010-03-17 | 2014-08-20 | 株式会社Moresco | Cylinder liner and manufacturing method thereof |
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CN110857671B (en) * | 2018-08-22 | 2022-03-08 | 帝伯爱尔株式会社 | Cylinder liner, method for manufacturing engine block, and method for manufacturing cylinder liner |
JP6657341B2 (en) | 2018-08-22 | 2020-03-04 | Tpr株式会社 | Cylinder liner, block manufacturing method, and cylinder liner manufacturing method |
CN110894813B (en) * | 2018-08-22 | 2023-05-02 | 帝伯爱尔株式会社 | Cylinder liner, method for manufacturing the same, and method for manufacturing cylinder block using the same |
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US10895218B2 (en) | 2019-02-01 | 2021-01-19 | Caterpillar Inc. | Liner for engine cylinder with lower liner support |
KR102494359B1 (en) | 2020-11-23 | 2023-02-07 | 한국철도기술연구원 | Cooling structure for driver built-in motor |
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-
2004
- 2004-02-18 DE DE102004007774A patent/DE102004007774A1/en not_active Withdrawn
-
2005
- 2005-02-18 JP JP2006553431A patent/JP4653762B2/en not_active Expired - Fee Related
- 2005-02-18 BR BRPI0507731-1A patent/BRPI0507731A/en not_active Application Discontinuation
- 2005-02-18 WO PCT/DE2005/000283 patent/WO2005078265A1/en active Application Filing
- 2005-02-18 EP EP05714992.4A patent/EP1721072B1/en not_active Expired - Fee Related
- 2005-02-18 KR KR1020067016912A patent/KR101279846B1/en active IP Right Grant
- 2005-02-18 US US10/589,792 patent/US7806098B2/en not_active Expired - Fee Related
- 2005-02-18 CN CNU200590000003XU patent/CN2900814Y/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2005078265A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7806098B2 (en) | 2010-10-05 |
WO2005078265A1 (en) | 2005-08-25 |
EP1721072B1 (en) | 2017-04-05 |
BRPI0507731A (en) | 2007-07-10 |
KR101279846B1 (en) | 2013-06-28 |
CN2900814Y (en) | 2007-05-16 |
JP2007524787A (en) | 2007-08-30 |
JP4653762B2 (en) | 2011-03-16 |
DE102004007774A1 (en) | 2005-09-15 |
US20070209627A1 (en) | 2007-09-13 |
KR20060129027A (en) | 2006-12-14 |
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