EP3298261A1 - Zylinderbohrung für ein zylindergehäuse eines verbrennungsmotors sowie anordnung aus einer derartigen zylinderbohrung und einem kolben - Google Patents
Zylinderbohrung für ein zylindergehäuse eines verbrennungsmotors sowie anordnung aus einer derartigen zylinderbohrung und einem kolbenInfo
- Publication number
- EP3298261A1 EP3298261A1 EP16724044.9A EP16724044A EP3298261A1 EP 3298261 A1 EP3298261 A1 EP 3298261A1 EP 16724044 A EP16724044 A EP 16724044A EP 3298261 A1 EP3298261 A1 EP 3298261A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder bore
- cylinder
- piston
- diameter
- region
- 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- Withdrawn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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000009750 centrifugal casting Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F02F1/18—Other cylinders
- F02F1/20—Other cylinders characterised by constructional features providing for lubrication
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/18—Other cylinders
-
- 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
- F02F3/0084—Pistons the pistons being constructed from specific materials
Definitions
- Cylinder bore for a cylinder housing of an internal combustion engine and arrangement of such a cylinder bore and a piston
- the present invention relates to a cylinder bore having a cylinder surface for a cylinder housing of an internal combustion engine, wherein in the cylinder bore, an upper reversal point and a lower reversal point are defined, in which
- the speed reaches zero, and the piston reaches a maximum speed in a range between the upper turning point and the lower turning point.
- a generic cylinder bore is disclosed, for example, in DE 10 2012 201 342 A1.
- the cylinder surface of such a cylinder bore has in
- DE 103 60 148 A1 discloses a cylinder bore with a cylinder surface into which microstructures are introduced at the top and bottom dead center.
- cylinder running surfaces should have a defined roughness in order to optimize the lubrication between the cylinder running surface and the piston rings of the piston guided in the cylinder bore, since lubricating oil is accommodated in the depressions of such cylinder running surfaces.
- it is required to reduce the roughness of the cylinder surfaces, in order to minimize friction in this way.
- Cylinder surface should be applied to ensure optimum guidance of the piston in the cylinder.
- reduces friction by increasing the clearance between the piston skirt and the cylinder surface can be.
- a measure is in practice only limited feasible.
- Inversion point must be closely managed to effectively avoid noise.
- a freely movable piston in the region between the upper and lower reversal point is exposed to significant lateral accelerations and thereby still tends to form noise.
- the object of the present invention is thus to develop a generic cylinder bore for an internal combustion engine such that the friction losses between the cylinder surface and piston skirt are reduced as possible without the leadership of the piston in the cylinder during engine operation
- the solution is that formed within the area at least two circumferential recesses whose diameter is greater than the diameter of the cylinder bore above the range and greater than the diameter below the range.
- the subject of the present invention is furthermore an arrangement of a cylinder bore according to the invention and a piston.
- cylinder bore both in one Engine block recorded cylinder liner as well as an introduced directly into the engine block hole understood.
- cylinder surface is in
- the solution according to the invention is characterized in that at least in a part of that region of the cylinder bore, in which in the engine operation of the piston guided therein up and down in the region of its piston shaft its maximum
- the cylinder bore according to the invention has at least two recesses with a larger diameter than above and below this range. In this area, the friction is minimized according to the invention, since the lubricant film thickness is increased. This reduces the hydrodynamic friction component between the piston skirt and the cylinder running surface. Furthermore, the friction behavior between piston rings and cylinder surface is improved.
- the piston skirt is guided at least partially in the cylinder, since there are running surface areas between the depressions which are in close sliding contact with the piston skirt. At the same time the game is between
- Piston shaft and cylinder surface in the range of high piston speed increased by the inventively provided wells.
- an effective reduction of the friction between piston skirt and cylinder surface is achieved.
- the piston by the occurrence of a outgoing of the adjacent cylinders or the movement of a vehicle
- Transverse accelerations is deflected so that the piston shaft abuts the cylinder surface and thereby causes unwanted noise.
- Reversal points of the cylinder bore are preferably identical, i. they have the same dimensions. It is further preferred that the diameters in the region of the upper and lower reversal point of the cylinder bore are constant in order to ensure optimum guidance of the piston shaft in the cylinder bore.
- the diameter of the cylinder bore in at least a portion of the range between the upper reversal point and the lower reversal point by 5 ⁇ to 30 ⁇ is greater than the diameter of the cylinder bore above and / or below this range.
- transitions between the depressions according to the invention and the partial surfaces of the cylinder running surface located above or below the recess are preferably rounded. This has the advantage that, in the cylinder bore formed according to the invention, the piston or the piston rings pass the recess provided according to the invention in a constantly sliding manner.
- the roughness R z of the cylinder surface is less in the region of the depression than in the regions outside the depression.
- the roughness R z in the region of the depression provided according to the invention is preferably smaller than 3 ⁇ m, particularly preferably smaller than 1 ⁇ m, in particular smaller than ⁇ m, ⁇ .
- a preferred development consists in that the cylinder running surface, at least in the area of its partial surfaces outside the inventively provided Groove a greater hardness (measured according to Vickers or Brinell) than in the area of the depression. This can, for example, by means of a known per se
- Induction hardening process can be achieved.
- the entire cylinder running surface may have a greater hardness than the material of the cylinder bore in the region to which the piston has no contact, for example.
- the material of a cylinder liner may be achieved.
- the inventive arrangement of a cylinder bore and a piston may, for example, comprise a piston whose piston shaft is made of a steel material and / or at least one piston ring at least in the contact area to the cylinder surface with a prepared by a PVD process CrN coating or DLC coating is provided.
- the present invention is particularly suitable for internal combustion engines for motor vehicles with at least two cylinders.
- Figure 1 shows a first embodiment of an inventive
- Cylinder bore in the form of a cylinder liner with piston guided up and down with a correlated thereto speed profile of the piston skirt in engine operation;
- Figure 2 shows another embodiment of an inventive
- Cylinder bore in the form of a cylinder liner with piston guided up and down with a correlated thereto speed profile the piston shaft in engine operation.
- the cylinder bore 10 according to the invention shown in Figure 1 is designed in the form of a cylinder liner 11.
- the cylinder liner 11 may, for example, consist of a cast iron material, in the exemplary embodiment of a cast iron material with lamellar graphite, and may be produced, for example, in a centrifugal casting process.
- the cylinder liner 1 1 has in the exemplary embodiment a shaft 12 with a circumferential flange 13 and a cylinder surface 14.
- a piston 20 is guided in engine operation upwards or downwards, the piston rings 21 and a piston shaft 22 has.
- the piston skirt 22 moves along the cylinder surface 14 between an upper reversal point OS and a lower reversal point US, where the piston 20 reaches a velocity v 0 which approaches zero.
- On the piston 20 itself is the point of minimum speed at the highest loaded point of the
- Piston shaft 22 defined. Within a range 15 between the upper turning point OS and the lower turning point US, the piston shaft 22 reaches a higher speed v at maximum speed in engine operation
- the invention provides that two circumferential depressions 18a, 18b are provided which have a diameter D2a, D2b
- Diameters D2a, D2b and the diameters D1 and D3 is preferably 5 ⁇ to 30 ⁇ .
- tread portions 14a, 14b of the cylinder surface 14 are formed, which are in frictional contact with the piston rings 21 during engine operation.
- diameters D1 and D3 are identical Dimensions on.
- the diameters D1 and D3 are also constant over their heights h1 and h3.
- Tread region 14c which is in frictional contact with the piston rings 21 during engine operation. This means that the piston 20 in the engine operation safely along the
- Tread areas 14a, 14b, 14c is guided, so that a deflection of the
- Piston shaft 22 is avoided due to possibly occurring lateral accelerations.
- the cylinder bore 1 10 according to the invention shown in Figure 2 is also in the form of a cylinder liner 1 1 1 executed.
- the cylinder liner 1 1 1 may, for example. From a cast iron material, in the embodiment of a
- Cast iron material with lamellar graphite exist and can, for example, in one
- the cylinder liner 1 1 in the exemplary embodiment, a shaft 1 12 with a peripheral flange 1 13 and a cylinder surface 1 14 on.
- the piston shaft 22 moves along the cylinder surface 1 14 between an upper reversal point OS and a lower reversal point US, where the piston 20 reaches a speed v 0 , which goes to zero.
- the point of minimum velocity is defined at the highest loaded point of the piston skirt 22.
- the piston shaft 22 reaches a higher speed v at maximum speed in engine operation
- the invention provides that three circumferential recesses 1 18a, 1 18b, 1 18c are provided, which have a diameter D2a, D2b and D2c, which are larger than the diameter D1 above the range 1 15 and the diameter D3 below the range 1 15.
- the difference between the diameters D2a, D2b, D2c and the diameters D1 and D3 is preferably 5 ⁇ to 30 ⁇ .
- tread areas 1 14a, 1 14b of the cylinder surface 1 14 are formed, which are in frictional contact with the piston rings 21 during engine operation.
- the diameters D2a, D2b, D2c have identical dimensions.
- the diameters D1 and D3 have identical dimensions.
- the diameters D1 and D3 are also constant over their heights h1 and h3.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015006498.3A DE102015006498A1 (de) | 2015-05-22 | 2015-05-22 | Zylinderbohrung für ein Zylindergehäuse eines Verbrennungsmotors sowie Anordnung aus einer derartigen Zylinderbohrung und einem Kolben |
PCT/EP2016/061468 WO2016188916A1 (de) | 2015-05-22 | 2016-05-20 | Zylinderbohrung für ein zylindergehäuse eines verbrennungsmotors sowie anordnung aus einer derartigen zylinderbohrung und einem kolben |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3298261A1 true EP3298261A1 (de) | 2018-03-28 |
Family
ID=56026879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16724044.9A Withdrawn EP3298261A1 (de) | 2015-05-22 | 2016-05-20 | Zylinderbohrung für ein zylindergehäuse eines verbrennungsmotors sowie anordnung aus einer derartigen zylinderbohrung und einem kolben |
Country Status (6)
Country | Link |
---|---|
US (1) | US11022063B2 (de) |
EP (1) | EP3298261A1 (de) |
JP (1) | JP2018515714A (de) |
CN (1) | CN107636286A (de) |
DE (1) | DE102015006498A1 (de) |
WO (1) | WO2016188916A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110131067B (zh) * | 2019-04-26 | 2021-04-27 | 华域科尔本施密特活塞有限公司 | 一种汽油机活塞裙部型线设计方法 |
US12105012B2 (en) * | 2021-05-14 | 2024-10-01 | Xtpl S.A. | Method of detecting surface irregularities on or in an internal surface of a cylinder for use in a piston-cylinder assembly, and related apparatus |
WO2023112125A1 (ja) * | 2021-12-14 | 2023-06-22 | ヤマハ発動機株式会社 | 内燃機関および輸送機器 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1193761A (ja) * | 1997-09-19 | 1999-04-06 | Ishikawajima Harima Heavy Ind Co Ltd | シリンダライナ |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3029215A1 (de) * | 1980-08-01 | 1982-03-11 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Brennkraftmaschine mit feingerillten gusseisernen zylinderinnenwaenden |
JPS6286198A (ja) * | 1985-10-11 | 1987-04-20 | Suzuki Motor Co Ltd | 内燃機関のシリンダ− |
DE4316012C2 (de) | 1993-05-13 | 1998-09-24 | Gehring Gmbh & Co Maschf | Verfahren zur Feinbearbeitung von Werkstück-Oberflächen |
DE19614328A1 (de) * | 1996-04-11 | 1997-10-16 | Gehring Gmbh & Co Maschf | Verfahren zum Beschichten und/oder spanabhebenden Bearbeiten von vorbehandelten Werkstück-Oberflächen |
DK56897A (da) * | 1997-05-16 | 1998-11-17 | Man B & V Diesel A S | Cylinderforing til en forbrændingsmotor af dieseltypen |
EP0943794A1 (de) * | 1998-03-18 | 1999-09-22 | Wärtsilä NSD Schweiz AG | Zylinderlaufbuchse |
DE19900386C1 (de) * | 1999-01-08 | 2000-11-16 | Man B & W Diesel As Kopenhagen | Hubkolbenmaschine |
EP1275864B2 (de) * | 2001-07-09 | 2010-10-27 | Gehring Technologies GmbH | Werkstück mit einer tribologisch beanspruchbaren Fläche und Verfahren zur Herstellung einer solchen Fläche |
DE10302107A1 (de) * | 2003-01-21 | 2004-07-29 | Fuchs Technology Ag | Zylinderoberfläche |
DE10355685B4 (de) | 2003-11-28 | 2009-05-20 | Gehring Gmbh & Co.Kg. | Werkstück mit einer als Zylinder ausgebildeten tribologisch beanspruchbaren Fläche und Verfahren zu deren Herstellung |
DE10360148A1 (de) | 2003-12-20 | 2005-07-21 | Daimlerchrysler Ag | Zylinderlaufbahn und Verfahren zur Herstellung einer Zylinderlaufbahn |
JP2007132247A (ja) * | 2005-11-09 | 2007-05-31 | Mazda Motor Corp | 摺動部材およびその製造方法 |
DE102006057111A1 (de) * | 2006-12-05 | 2008-06-12 | Mahle International Gmbh | Lauffläche eines Zylinders und Verfahren zu ihrer Herstellung |
US8381696B2 (en) * | 2007-10-05 | 2013-02-26 | Nippon Piston Ring., Ltd. | Cylinder |
DE102008026146B4 (de) | 2008-05-30 | 2014-05-28 | Audi Ag | Kolbenreibungsreduktion in einem Zylinder |
CN201991633U (zh) | 2011-02-01 | 2011-09-28 | 浙江银鑫工贸有限公司 | 一种新型缸套 |
US20120227699A1 (en) * | 2011-03-08 | 2012-09-13 | GM Global Technology Operations LLC | Linerless engine |
JP2013113275A (ja) | 2011-11-30 | 2013-06-10 | Honda Motor Co Ltd | シリンダブロックおよびその加工方法 |
KR101911550B1 (ko) | 2011-12-19 | 2018-10-25 | 두산인프라코어 주식회사 | 미세요철 최적 배치에 의해 내마모성이 개선된 실린더 장치 |
DE102012201342A1 (de) | 2012-01-31 | 2013-08-01 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung einer Innenfläche einer Bohrung mit lokal unterschiedlichen Rauheitsstrukturen und Bauteil mit einer Bohrung mit lokal unterschiedlichen Rauheitsstrukturen |
DE102014017361A1 (de) | 2014-11-25 | 2016-06-09 | Mahle International Gmbh | Zylinderbohrung für ein Zylindergehäuse eines Verbrennungsmotors sowie Anordnung aus einer derartigen Zylinderbohrung und einem Kolben |
-
2015
- 2015-05-22 DE DE102015006498.3A patent/DE102015006498A1/de not_active Withdrawn
-
2016
- 2016-05-20 JP JP2017559520A patent/JP2018515714A/ja active Pending
- 2016-05-20 CN CN201680028968.2A patent/CN107636286A/zh active Pending
- 2016-05-20 WO PCT/EP2016/061468 patent/WO2016188916A1/de active Application Filing
- 2016-05-20 US US15/576,274 patent/US11022063B2/en active Active
- 2016-05-20 EP EP16724044.9A patent/EP3298261A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1193761A (ja) * | 1997-09-19 | 1999-04-06 | Ishikawajima Harima Heavy Ind Co Ltd | シリンダライナ |
Also Published As
Publication number | Publication date |
---|---|
CN107636286A (zh) | 2018-01-26 |
US20180149109A1 (en) | 2018-05-31 |
WO2016188916A1 (de) | 2016-12-01 |
US11022063B2 (en) | 2021-06-01 |
DE102015006498A1 (de) | 2016-11-24 |
JP2018515714A (ja) | 2018-06-14 |
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