EP2703630A1 - Chemise cylindre pour un moteur à combustion - Google Patents

Chemise cylindre pour un moteur à combustion Download PDF

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Publication number
EP2703630A1
EP2703630A1 EP13177249.3A EP13177249A EP2703630A1 EP 2703630 A1 EP2703630 A1 EP 2703630A1 EP 13177249 A EP13177249 A EP 13177249A EP 2703630 A1 EP2703630 A1 EP 2703630A1
Authority
EP
European Patent Office
Prior art keywords
cylinder liner
cylinder
cooling
coolant
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.)
Withdrawn
Application number
EP13177249.3A
Other languages
German (de)
English (en)
Inventor
Konrad Räss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wartsila NSD Schweiz AG
Original Assignee
Wartsila NSD Schweiz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wartsila NSD Schweiz AG filed Critical Wartsila NSD Schweiz AG
Priority to EP13177249.3A priority Critical patent/EP2703630A1/fr
Publication of EP2703630A1 publication Critical patent/EP2703630A1/fr
Withdrawn legal-status Critical Current

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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 
    • 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

Definitions

  • the invention relates to a cylinder liner for a reciprocating internal combustion engine, in particular for a longitudinally-flushed two-stroke large diesel engine with a thermally asymmetrically designed cooling system for the asymmetric cooling of the cylinder liner according to the preamble of the independent claim 1.
  • Crosshead two-stroke engines are not necessary, but usually two or three injectors per cylinder liner which usually inject tangential into the combustion chamber. Due to the different temperature distribution in the combustion chamber while the cylinder shape of the cylinder liner, especially in the region of top dead center (TDC) can be negatively influenced so that the cylindrical shape of the cylinder liner is deformed into a kind of polygon. In the area of top dead center (TDC), as already mentioned, very high pressures and temperatures are measured. Any deviation of the cylinder from the optimal round cylindrical shape, for example, can be harmful
  • Piston ring deformations lead, which in the extreme case to "blow through” of Gas, especially combustion gases and even damage or destruction of the lubricating oil film on the cylinder surface can lead.
  • the object of the invention is therefore to provide an improved cylinder liner for a reciprocating internal combustion engine, in particular for a longitudinally-purged slow-running two-stroke large diesel engine, in which the problems known from the prior art are avoided, in particular the static and dynamic thermal expansions occurring therewith can be better controlled, so that a higher reliability of the internal combustion engine is ensured, maintenance intervals can be extended, the life of the cylinder liner and other components are significantly increased, and thus ultimately the cost of operating the engine can be significantly reduced.
  • the invention thus relates to a cylinder liner for a reciprocating internal combustion engine, in particular for a longitudinally-flushed two-stroke large diesel engine, wherein in the cylinder liner, a piston can be arranged, in the operating and installed state between a top dead center and a bottom dead center so along a cylinder axis of the cylinder liner is arranged reciprocable, that an upper surface of the piston together with a running surface of the cylinder liner and a cylinder liner arranged on the cylinder cover limits a combustion chamber.
  • a cooling system designed to asymmetrically cool the cylinder liner with respect to a circumferential direction and / or with respect to the cylinder axis of the cylinder liner is provided.
  • Cooling holes mounted in the area of the cylinder near top dead center (TDC), are symmetrically arranged in the state of the art to date, often equidistant from the cylinder surface.
  • TDC top dead center
  • cooling bores are preferably provided in the cylinder wall of the cylinder liner at a non-constant distance from the cylinder surface.
  • Another possibility is to install the cooling holes as known per se from the prior art, symmetrically with a constant distance, but for example, locally with insulation means, in particular with the same or different highly thermally insulating insulating tube to provide.
  • the cooling of the cylinder liner to the asymmetrically distributed tread temperatures that occur in the operating state be aligned, which are not least caused by the spatially targeted introduced into the combustion chamber fuel injection jet, which leads to different degrees heated points of the cylinder wall of the cylinder liner.
  • cylinder liners without cooling holes which may instead have a refrigerator, to isolate locally.
  • Measures according to the invention may be particularly preferably provided in the region of top dead center (TDC) but also at other locations of the cylinder. For example, at a local cooling water inlet but also, for example, at locations where a cooling fan blows cold air to the cylinder.
  • TDC top dead center
  • Essential for the invention is that the proposed measures ultimately lead to the cylinder liner is thermally stressed in the operating state as uniform as possible in order to avoid the harmful effects described above.
  • FIG. 1 to Fig. 4 is schematic, and shown for reasons of clarity only partially in section respectively an inventive cylinder liner 1 for a reciprocating internal combustion engine, in particular for a longitudinally purged two-stroke large diesel engine.
  • a piston not shown in detail is arranged in the cylinder liner 1 in a conventional manner, which is in the operating and installed state between a top dead center and a bottom dead center OT along such a cylinder axis A of the cylinder liner 1 and herbewegbar arranged that an upper side of the piston together with a running surface 2 of the cylinder liner 1 and arranged on the cylinder liner 1, also not shown cylinder cover a combustion chamber 3 limited.
  • asymmetric cooling system 4 for the asymmetric cooling of Cylinder liner provided.
  • Fig. 1 is a first cooling chamber 4, 41, 42 arranged at a first axial height H1, while a second cooling space is arranged at a second axial height H2, whereby the inventive asymmetric cooling of the cylinder liner 1 is made possible.
  • a cooling system 4 which is formed in the cylinder wall 11 of the cylinder liner 1 in the form of at least two, inside the cylinder wall 11 asymmetrically configured cooling chambers 41, 42, wherein the at least two cooling chambers 41, 42 within the Cylinder wall 11 are not connected to each other in the specific embodiment shown here, but in an alternative embodiment, of course, all or some of the cooling chambers 41, 42 may be interconnected.
  • the refrigerator 41, 42 in the specific example of Fig. 1 is formed in the form of a with respect to the cylinder axis A perpendicular or parallel or obliquely extending bore-like cooling chamber 41, 42 and is in the specific embodiments of Fig. 1 to Fig. 4 formed in particular in the form of a bore in the cylinder wall 11.
  • Fig. 2 to Fig. 4 represent a vertical section through an inventive cylinder liner and could, for example, a section through a cylinder liner 1 according to Fig. 1 be; but may also relate to embodiments in which a part or all of the cooling chambers 41, 42 are arranged at the same axial height.
  • Fig. 2 is in the circumferential direction U a first distance D1 between two cooling chambers 41, 42 different from a second distance D2 between two cooling chambers 41, 42, whereby according to the invention a geometrically asymmetric cooling of the cylinder liner 1 is achieved.
  • a first cooling space 41 has a cooling volume different from a second cooling space 42, which is realized here in particular in that a first cooling space 41 has a different diameter from a second cooling space 42, the first cooling space 41 and / or the second cooling space 42 is preferably provided in the form of a bore-like cooling space 41, 42. It goes without saying by itself, that according to another embodiment Fig. 3 the distance D1, D2 between two cooling chambers 41, 42 of different volumes can also be the same.
  • the cooling chamber 41, 42 extend in the cylinder wall 11 in a predetermined range in the circumferential direction U, but of course this is not absolutely necessary.
  • the cylinder liner 1 has a cooling system 4, which is provided for asymmetric cooling of the cylinder liner 1 partially with a heat insulation 5, wherein in the present specific embodiment, the cooling system 4 comprises a hole-like cooling chamber 41, 42, the is provided with a thermal insulation 5 in the form of an insulation tube.
  • a cooling system 4 may be formed in the cylinder wall 11 of the cylinder liner 1 in the form of a cooling space 41, 42 to be filled with a coolant, the coolant preferably being circulatable in a manner known per se through the cooling space 41, 42.
  • the cooling system 4 can be configured in the cylinder wall 11 in a very specific embodiment also in the form of regions with thermally different properties, in which no coolant is circulated.
  • the cylinder wall 11 locally have different material thicknesses or it may be provided as such thermal bridges with a different thermal conductivity than the cylinder liner 1 or any other suitable measure with which the asymmetric thermal load of the cylinder liner 1 is suitably compensated.
  • cooling system 4 in the cylinder wall 11 of the cylinder liner 1 in the form of a single contiguous, asymmetrically designed cooling space 41, 42 may be formed.
  • the coolant may be a liquid coolant, in particular water or oil and / or the coolant may be a gaseous coolant, in particular air and / or the coolant may be a solid provided on the cylinder wall, for example be the aforementioned thermal bridge, with which a geometrically asymmetric heat flow in the wall of the cylinder liner is adjustable.

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)
EP13177249.3A 2012-08-31 2013-07-19 Chemise cylindre pour un moteur à combustion Withdrawn EP2703630A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13177249.3A EP2703630A1 (fr) 2012-08-31 2013-07-19 Chemise cylindre pour un moteur à combustion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12182592 2012-08-31
EP13177249.3A EP2703630A1 (fr) 2012-08-31 2013-07-19 Chemise cylindre pour un moteur à combustion

Publications (1)

Publication Number Publication Date
EP2703630A1 true EP2703630A1 (fr) 2014-03-05

Family

ID=46799106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13177249.3A Withdrawn EP2703630A1 (fr) 2012-08-31 2013-07-19 Chemise cylindre pour un moteur à combustion

Country Status (4)

Country Link
EP (1) EP2703630A1 (fr)
JP (1) JP2014047784A (fr)
KR (1) KR20140030066A (fr)
CN (1) CN103670772A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105569796B (zh) * 2015-12-18 2018-09-04 燕山大学 一种基于温差发电式内燃机冷却装置
EP3219970A1 (fr) * 2016-03-17 2017-09-20 Winterthur Gas & Diesel AG Cylindre pour un gros moteur diesel deux temps lave longitudinalement et gros moteur diesel
DE102018211169A1 (de) * 2018-07-06 2020-01-09 Bayerische Motoren Werke Aktiengesellschaft Verbrennungskraftmaschine für ein Kraftfahrzeug, insbesondere für einen Kraftwagen, sowie Kraftfahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937200A (en) 1909-03-09 1909-10-19 Floyd T Wood Whip-socket.
JPH02145646U (fr) * 1989-05-15 1990-12-11
WO1997042406A1 (fr) * 1996-05-07 1997-11-13 Man B & W Diesel A/S Chemise de cylindre pour moteur a combustion interne
WO2012008335A1 (fr) * 2010-07-12 2012-01-19 三菱重工業株式会社 Chemise de cylindre
WO2012023502A1 (fr) * 2010-08-17 2012-02-23 三菱重工業株式会社 Chemise de cylindre

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6123634Y2 (fr) * 1979-05-07 1986-07-15
JPS5958749U (ja) * 1982-10-13 1984-04-17 川崎重工業株式会社 水冷４サイクル内燃機関のシリンダ
JPH0674090A (ja) * 1992-06-26 1994-03-15 Mazda Motor Corp エンジンの冷却装置
JPH06221219A (ja) * 1993-01-29 1994-08-09 Mitsubishi Heavy Ind Ltd 内燃機関のシリンダライナ
EP0904209A1 (fr) * 1996-06-11 1999-03-31 The Boler Company. Organe de commande reglable pour chassis et essieux de vehicule
JP3584860B2 (ja) * 2000-07-11 2004-11-04 トヨタ自動車株式会社 シリンダブロックの冷却構造
US6799541B1 (en) * 2002-10-25 2004-10-05 Darton International, Inc. Cylinder sleeve with coolant groove
JP4442542B2 (ja) * 2005-09-30 2010-03-31 マツダ株式会社 往復動ピストン型エンジン
JP2007297923A (ja) * 2006-04-27 2007-11-15 Toyota Motor Corp シリンダライナの構造
JP5164210B2 (ja) * 2008-09-19 2013-03-21 日野自動車株式会社 シリンダライナの冷却装置及びシリンダライナ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937200A (en) 1909-03-09 1909-10-19 Floyd T Wood Whip-socket.
JPH02145646U (fr) * 1989-05-15 1990-12-11
WO1997042406A1 (fr) * 1996-05-07 1997-11-13 Man B & W Diesel A/S Chemise de cylindre pour moteur a combustion interne
WO2012008335A1 (fr) * 2010-07-12 2012-01-19 三菱重工業株式会社 Chemise de cylindre
WO2012023502A1 (fr) * 2010-08-17 2012-02-23 三菱重工業株式会社 Chemise de cylindre

Also Published As

Publication number Publication date
KR20140030066A (ko) 2014-03-11
CN103670772A (zh) 2014-03-26
JP2014047784A (ja) 2014-03-17

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