EP2852750A1 - Chemise de cylindre et bloc cylindres associe - Google Patents
Chemise de cylindre et bloc cylindres associeInfo
- Publication number
- EP2852750A1 EP2852750A1 EP13723844.0A EP13723844A EP2852750A1 EP 2852750 A1 EP2852750 A1 EP 2852750A1 EP 13723844 A EP13723844 A EP 13723844A EP 2852750 A1 EP2852750 A1 EP 2852750A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- liner
- wall
- cylinder block
- coating
- 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.)
- Ceased
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
- 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
- F02F2001/008—Stress problems, especially related to thermal stress
Definitions
- an internal combustion engine or heat engine, comprises a motor unit in which is formed at least one cylinder inside which is mounted movably a piston connected by a connecting element such a connecting rod, to a crankshaft.
- the engine block generally comprises three main parts, one of which is called cylinder block (s), because it comprises one or more cylinders.
- cylinder block for the rest of the drafting, the single spelling block "cylinders" is adopted without this does not exclude the invention the engines having a single cylinder.
- the cylinder block is covered on one side of a cylinder head (second main part) in which are arranged the means necessary for the operation of the internal combustion, including the intake means, the exhaust means and optionally the ignition means.
- a crankcase third main part in which is housed a crankshaft.
- the invention relates to the cylinder block and more precisely its upper part called barrel or cylinder.
- Each cylinder of the cylinder block must allow the transfer of the pressure from the combustion of air and fuel to the piston, by guiding the piston / piston assembly in translation. It is therefore one of the most sensitive and important areas of the cylinder block because it undergoes strong thermomechanical stresses: pressure in the cylinder, heat flow, mechanical clamping of the cylinder head on the cylinder block.
- the deformed and the surface states of the drums directly impact the performance and performance of the engine, and more particularly its oil consumption, the flow of crankcase gases (so-called gas "blow-by”) as well as mechanical friction losses.
- the drums undergoing significant stress are generally made of a very resistant material, for example cast iron, while the rest of the crankcase can be made of a lighter material, typically an aluminum alloy.
- Drums can be either:
- the invention relates to a sleeve inserted in the casting, and the cylinder blocks thus obtained.
- a shirt inserted in the casting undergoes many constraints:
- the casing as a drum must remain as cylindrical as possible during operation of the engine, to ensure good efficiency of the segmentation to avoid over-consumption of oil or a too large passage of gas to the sump oil.
- One of the most important elements to achieve this goal is to ensure good cohesion between the block and the shirt. This cohesion makes it possible to mechanically control the deformations of the jacket, but also to ensure good thermal conductivity between the jacket and the cylinder block, which allows a good evacuation of the energy resulting from the combustion and not transformed into reciprocating movement of the jacket. piston.
- document FR2887926 discloses a cylinder block liner having a conical upper portion and which is coated, with the exception of the upper part, striations.
- a conical, or more generally flared shape of the upper part of the shirt besides the fact that it geometrically reduces the space between two shirts neighboring, improves the behavior of the assembly when it rises in temperature: the cylinder block, usually aluminum, expanding more than the shirts, usually cast iron, pushes the shirt at its conical portion so as to tend to close the bent inwards (towards its main axis) while the tightening of the cylinder head tends to open outwards in the upper part.
- the invention therefore relates to a cylinder liner for the cladding of the cylindrical wall of a cylinder of an internal combustion engine, the liner having an inner wall for guiding a piston in translation and an outer wall intended to bear on the cylindrical wall of the cylinder, the inner and outer walls of the cylinder liner being substantially co-cylindrical and delimiting between them an upper edge of the jacket intended to receive at least a portion of a cylinder head gasket, the outer wall of the cylinder liner comprising a flared upper part, characterized in that the outer wall is coated, over all or part of its surface but not on the flared upper part which is bare, of a coating capable of promoting the mechanical connection between the outer wall and a metal piece cast around said outer wall.
- Such a shirt will thus have, once cast in a cylinder block, a good cohesion with the block.
- the flaring of the upper part contributes to the maintenance of a good cylindricity of the shirt, but, this part not being intimately linked to the metal cast around the shirt, the harmful effects of the differential expansion between the metal of the shirt and that of the block in this area are limited.
- the outer wall is completely coated with the exception of the flared upper part which is bare.
- the flared upper portion is substantially conical.
- the upper part comprises a conical zone and a cylindrical end zone.
- the coating is an aluminum alloy.
- the aluminum alloy is an aluminum-silicon alloy.
- the aluminum-silicon alloy may contain around 12% silicon.
- the coating is applied by spraying.
- the coating is of the type allowing an intermetallic bond between the jacket and aluminum cast around said jacket.
- the invention also relates to a cylinder block of an internal combustion engine comprising: ⁇ a casing comprising at least one cylinder having a cylindrical wall;
- a cylinder liner as previously defined covering the cylindrical wall of the cylinder.
- the casing comprises a plurality of cylinders all dressed with a cylinder liner as previously defined.
- the upper edges of two cylinder liners covering the walls of two neighboring cylinders have between them a negligible space when the engine is cold.
- the space between the upper edges of two cylinder liners covering the walls of two neighboring cylinders are void.
- the invention relates to a motor vehicle equipped with such a cylinder block.
- the invention is described in more detail below and with reference to the figures schematically showing the system in its preferred embodiment.
- Figure 1 shows schematically and in axial section, a cylinder liner according to a first embodiment of the invention.
- Figure 2 shows schematically and in axial section, a detail view of the upper part of a cylinder liner according to the first embodiment of the invention.
- Figure 3 shows schematically and in axial section, two cylinder liners according to the first embodiment of the invention, dressing two neighboring cylinders.
- Figure 4 shows schematically and in axial section, two cylinder liners according to a second embodiment of the invention, dressing two neighboring cylinders.
- Figure 5 shows schematically and in axial section, two cylinder liners according to a third embodiment of the invention, dressing two neighboring cylinders.
- Figure 6 shows schematically and in three dimensions, a cylinder block of the four-cylinder in-line type.
- FIG. 7 shows, schematically and in three dimensions, in an extract view, two cylinder liners covering two adjacent cylinders of a cylinder block according to a variant of the invention.
- a cylinder liner 2 according to the first embodiment of the invention is intended for the cladding of the cylindrical wall 1 of a cylinder C cylinder cylinder of an internal combustion engine.
- the liner 2 has an inner wall 3 for guiding a piston in translation and an outer wall 4 for bearing on the cylindrical wall of the cylinder.
- the inner and outer walls 4 of the cylinder liner are substantially cocylindrical and delimit between them an upper edge 5 of the cylinder liner for receiving at least a portion of a cylinder head gasket interposed between the cylinder block and a cylinder head.
- the outer wall 4 of the cylinder liner 2 comprises an upper portion 6 flaring towards the upper edge 5 of the liner 2.
- the outer wall 4 of the liner cylinder 2 comprises an upper portion 6 substantially conical.
- the outer wall 4 of the cylinder liner 2 is coated, in whole or in part, but with the exception of the flared upper part which is bare, a coating 8 adapted to promote the connection mechanical between the outer wall and a metal piece cast around said outer wall.
- the coating 8 covers the entire outer wall 4 with the exception of the flared upper part.
- it is an aluminum-silicon coating 8.
- the silicon content can be of the order of 12%.
- the coating 8 is for example deposited on the jacket by a projection method.
- the coating 8 may typically have a thickness of the order of 0.2 mm.
- the coating when the cylinder block is cast around the shirts to form the cylinder block, the coating will melt, totally or partially, to intimately bind the shirts to the cylinder block.
- This coating therefore typically allows, during the casting of aluminum in a cylinder block mold around the jacket, a very good cohesion between the cylinder housing aluminum and the insert (the sleeve) which is usually cast iron. This allows, during the rise in temperature of the cylinder block during operation of the engine, to obtain a better thermal conductivity between the inside of the liner and the aluminum of the cylinder block, and therefore to minimize deformation the barrel of the crankcase in the part below the conical zone
- the upper portion may comprise a conical zone 61 and a cylindrical end zone 62.
- a conical zone 61 may comprise a conical zone 61 and a cylindrical end zone 62.
- Such an arrangement provides the advantage of a same support diameter for the cylinder head gasket after machining.
- FIG. 4 shows shirts 2 having an upper portion having a concave flare
- FIG. 5 shows sheaths 2 comprising an upper part having the succession a concave flare and a convex flare.
- Many other flare geometries can be envisaged, but the largest diameter of the upper part 6 is in any case at the upper edge 5 of the cylinder liner.
- the difference in diameter between that of the outer wall 4 of the liner 2 in its cylindrical portion and that at its upper edge 5 (where the flare is maximum) may be by way of example, for an application to a motor vehicle engine, of the order of 3mm.
- the height of the flare can be in this context and as an example, of the order of 20mm.
- the flaring of the upper portion 6 of the outer wall 4 of a jacket according to the invention can be determined, for a given application, as a function of a space 7 (shown in Figure 6) between the walls. outer 4 of the two cylinder liners 2 for covering the cylindrical walls 1 of two neighboring cylinders.
- This provision of the invention allows, in addition to limiting or eliminating this area of the cylinder block favorable to the appearance of cracks, to create a thermal bridge between the adjacent shirts 2.
- This arrangement makes it possible to obtain a substantially continuous bearing surface for the support of a cylinder head gasket interposed between all the upper edges 5 of the cylinder liners 2 and the yoke covering the cylinders.
- the upper flared portion of the jacket being devoid of means for improving its cohesion with the cylinder block in the upper part, so that the metal of the shirt can slide on the metal of the block in this zone.
- a suitable coating preferably an aluminum-silicon alloy, ensuring good cohesion between the crankcase cylinders and the shirts, further limit the deformation of the barrels compared to an application employing a shirt on its outer wall striations. This allows a reduction in oil consumption, which is a good indicator of the efficiency (no friction, tightness) of the interface between the piston (and its segments) and the jacket.
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
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1254594A FR2990727B1 (fr) | 2012-05-21 | 2012-05-21 | Chemise de cylindre et bloc cylindres associe |
| PCT/FR2013/050883 WO2013175094A1 (fr) | 2012-05-21 | 2013-04-22 | Chemise de cylindre et bloc cylindres associe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2852750A1 true EP2852750A1 (fr) | 2015-04-01 |
Family
ID=46754608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13723844.0A Ceased EP2852750A1 (fr) | 2012-05-21 | 2013-04-22 | Chemise de cylindre et bloc cylindres associe |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2852750A1 (fr) |
| CN (1) | CN104781529A (fr) |
| FR (1) | FR2990727B1 (fr) |
| WO (1) | WO2013175094A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015219638A1 (de) * | 2015-10-09 | 2017-04-13 | Volkswagen Aktiengesellschaft | Zylinderkurbelgehäuse für eine Hubkolben-Brennkraftmaschine und Hubkolben-Brennkraftmaschine |
| CN105909416B (zh) * | 2016-06-03 | 2019-04-05 | 河南省中原华工激光工程有限公司 | 一种抗穴蚀的环保型气缸套 |
| US11480131B2 (en) | 2018-09-17 | 2022-10-25 | GM Global Technology Operations LLC | Engine block for an internal combustion engine |
| US10781769B2 (en) * | 2018-12-10 | 2020-09-22 | GM Global Technology Operations LLC | Method of manufacturing an engine block |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5996457A (ja) * | 1982-11-24 | 1984-06-02 | Honda Motor Co Ltd | 内燃機関用エンジンのシリンダブロツク |
| CN1026500C (zh) * | 1992-05-12 | 1994-11-09 | 湖南省进出口总公司通联公司 | 高硅低铝合金及其生产工艺 |
| DE10018730A1 (de) * | 2000-04-15 | 2001-10-18 | Audi Ag | Zylindergehäuse für eine mehrzylindrige Hubkolbenmaschine |
| DE10146850A1 (de) * | 2001-09-24 | 2003-01-30 | Daimler Chrysler Ag | Zylinderblock einer Brennkraftmaschine |
| DE10338979A1 (de) * | 2003-08-25 | 2005-03-31 | Ernst, Armin | Flüssigkeitgekühltes Zylindergehäuse für eine Brennkraftmaschine |
| DE10347512C5 (de) * | 2003-10-13 | 2012-09-06 | Federal-Mogul Burscheid Gmbh | Zylinderlaufbuchse mit thermisch gespritzter Rauschicht für Verbrennungskraftmaschinen, ihre Anbindung an einen Verbundkörper und so hergestellter Verbundkörper |
| US20050109429A1 (en) * | 2003-11-21 | 2005-05-26 | Showa Denko K.K. | Aluminum alloy, bar-like material, forge-formed article, machine-formed article, wear-resistant aluminum alloy with excellent anodized coat using the same and production methods thereof |
| FR2887926B1 (fr) * | 2005-06-29 | 2010-08-13 | Peugeot Citroen Automobiles Sa | Chemise de cylindre pour un moteur a combustion interne et bloc cylindres equipes d'une telle chemise |
| JP4491385B2 (ja) * | 2005-07-08 | 2010-06-30 | トヨタ自動車株式会社 | 鋳ぐるみ用部品、シリンダブロック及びシリンダライナ製造方法 |
| CN100577835C (zh) * | 2008-01-16 | 2010-01-06 | 无锡海特铝业有限公司 | 一种生产高硅铝合金的方法 |
| CN101503773B (zh) * | 2009-03-11 | 2010-09-08 | 华中科技大学 | 一种耐热低膨胀高硅铝合金及其制备方法 |
| JP2011202576A (ja) * | 2010-03-25 | 2011-10-13 | Teikoku Piston Ring Co Ltd | シリンダライナ |
-
2012
- 2012-05-21 FR FR1254594A patent/FR2990727B1/fr active Active
-
2013
- 2013-04-22 CN CN201380026953.9A patent/CN104781529A/zh active Pending
- 2013-04-22 EP EP13723844.0A patent/EP2852750A1/fr not_active Ceased
- 2013-04-22 WO PCT/FR2013/050883 patent/WO2013175094A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2013175094A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2990727B1 (fr) | 2014-05-16 |
| WO2013175094A1 (fr) | 2013-11-28 |
| FR2990727A1 (fr) | 2013-11-22 |
| CN104781529A (zh) | 2015-07-15 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Extension state: BA ME |
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| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PEUGEOT CITROEN AUTOMOBILES SA |
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| 17Q | First examination report despatched |
Effective date: 20170227 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PSA AUTOMOBILES SA |
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| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
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| 18R | Application refused |
Effective date: 20180329 |