WO2020105938A1 - Chemise de cylindre résistante à l'usure et résistante à la chaleur - Google Patents

Chemise de cylindre résistante à l'usure et résistante à la chaleur

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Publication number
WO2020105938A1
WO2020105938A1 PCT/KR2019/015380 KR2019015380W WO2020105938A1 WO 2020105938 A1 WO2020105938 A1 WO 2020105938A1 KR 2019015380 W KR2019015380 W KR 2019015380W WO 2020105938 A1 WO2020105938 A1 WO 2020105938A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder liner
block
heat
inner sleeve
resistant
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
Application number
PCT/KR2019/015380
Other languages
English (en)
Korean (ko)
Inventor
김성규
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2020105938A1 publication Critical patent/WO2020105938A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/44—Methods of heating in heat-treatment baths
    • C21D1/46—Salt baths
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • 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 present invention relates to a cylinder liner for an internal combustion engine, and more specifically, the cylinder liner is divided into an outer body and an inner sleeve, and the inner sleeve is secured to abrasion resistance by heat treatment with a salt bath, and the inner sleeve and cooling jacket are circulated.
  • the present invention relates to a wear-resistant and heat-resistant cylinder liner that secures heat resistance through direct heat exchange between media.
  • the engine of an internal combustion engine obtains power by converting and outputting a piston lifting motion caused by combustion pressure generated by a mixer in a combustion chamber inside a cylinder into a rotational motion by a crank mechanism, and such important components include a cylinder Blocks, pistons, and crank mechanisms.
  • the cylinder block has the feature of preventing the compressed mixer or the combustion explosive gas from leaking between the cylinder and the piston in order to obtain as much power as possible from the given thermal energy, and at the same time, the friction and wear of the piston must be reduced.
  • a separate cylinder liner is applied to the cylinder block in order to solve the difficulties such as the precise polishing process.
  • Conventional cylinder liners are used made of special cast iron to match the cylinder block of cast iron.
  • the cylinder liner must satisfy both cooling and heat retention, and also wear resistance.
  • Patent document (Patent Publication No. 10-2007-0060326) is coupled to the inside of the cylinder block to form a water jacket, in the cylinder liner of the engine having a coolant contact with the coolant circulating inside the water jacket, A polymer coating layer is formed on the surface of the coolant contact portion, which transfers heat of the coolant through the polymer coating layer, and has disadvantages in ensuring wear resistance and satisfying heat resistance together.
  • Patent document is a secondary cooling channel formed in an annular shape on the upper circumference of the cylinder liner to cool the upper portion of the cylinder liner inserted into the inner wall of the cylinder block, around the cylinder block and the cylinder liner
  • an outlet connected to flow to the cooling water outlet is formed close to the starting position of the cooling water outlet, and the horizontal position of the secondary cooling channel and the outlet
  • a separate connection passage is formed.
  • the present invention is to solve the problems as described above, the cylinder liner is divided into an outer body and an inner sleeve, and the inner sleeve is secured to abrasion resistance by heat treatment with a salt bath, and a cooling medium circulating the inner sleeve and the cooling jacket
  • the aim is to provide a wear-resistant and heat-resistant cylinder liner that secures heat resistance through direct heat exchange between the liver.
  • the wear-resistant and heat-resistant cylinder liner comprises: a cylindrical cylinder liner body fixedly inserted into a hole of a cylinder block; An inner sleeve whose surface is heat-treated and inserted and fixed inside the cylinder liner body; And a heat transfer block which is connected to the inner sleeve to be heat-transfer to the circumference of the cylinder liner body and corresponds to a cooling jacket of the cylinder block and cools the inner sleeve through a cooling medium circulating the cooling jacket, wherein the cylinder liner
  • the body is formed on an outer circumferential surface and includes a block insertion groove into which the heat transfer block is inserted and a hole formed through the inner and outer portions of the block insertion groove, wherein the heat transfer block does not protrude from the outer peripheral surface of the cylinder liner body into the block insertion groove. It is characterized in that it comprises a contact portion that is formed to protrude on the inner circumferential surface of the block body and the block body which
  • the sliding portion of the piston is made of an inner sleeve having excellent wear resistance and a portion corresponding to the cooling jacket of the cylinder block is made of a heat transfer block made of a material having excellent heat conductivity, thereby ensuring both wear resistance and heat resistance. It has the effect of improving the performance of the internal combustion engine and improving the durability.
  • FIG. 1 is a cross-sectional view of the wear-resistant and heat-resistant cylinder liner according to the present invention.
  • Figure 2 is an exploded perspective view of the wear-resistant and heat-resistant cylinder liner according to the present invention.
  • Figure 3 is a cross-sectional view showing another example of a heat transfer block applied to the wear-resistant and heat-resistant cylinder liner according to the present invention.
  • Figure 4 is a surface treatment process of the inner sleeve applied to the wear-resistant and heat-resistant cylinder liner according to the present invention.
  • the wear-resistant and heat-resistant cylinder liner 100 includes a cylindrical cylinder liner body 10 and an inner sleeve 20 that is inserted and fixed inside the cylinder liner body 10. , It consists of a heat transfer block 30 for directing the cooling of the inner sleeve 20 by transferring the heat of the inner sleeve 20 directly to the cooling medium circulating the cooling jacket 2 of the cylinder block 10.
  • the cylinder liner body 10 is a material having a lower strength than the inner sleeve 20 or the same cast iron as the inner sleeve 20, but the surface is not high-strength and is a base for installing the inner sleeve 20 and a heat transfer block 30. Is the base to apply only to the optimal position for heat transfer, and the structural features are as follows.
  • the cylinder liner body 10 is a vertical cylinder in the vertical direction, and the upper end (or lower end part) is provided with an outward flange 11 seated on the chin of the cylinder block 1.
  • the cylinder liner body 10 is formed on the outer circumferential surface and a block insertion groove 12 into which the heat transfer block 30 is inserted is formed, and the heat transfer block 30 and the inner sleeve 20 inserted into the block insertion groove 12 are installed.
  • a hole 13 is formed to penetrate inside and outside for a connection (connection capable of direct heat transfer).
  • the block insertion groove 12 is formed as a groove having a uniform depth as a whole and has the same shape as the shape of the heat transfer block 30, and may be formed in a ring shape on the outer circumferential surface of the cylinder liner body 10 or as shown in the drawing Likewise, two or more may be formed at regular intervals along the circumferential direction.
  • the block insertion groove 12 is a position where the heat transfer block 30 corresponds to the cooling jacket 2 of the cylinder block 1, and thus, does not form the heat transfer block 30 on the cylinder liner 100 as a whole, and thus performs cooling. Can only form where necessary.
  • the cylinder liner body 10 may perform only the function of supporting the inner sleeve 20 and the heat transfer block 30. Do not require.
  • the hole 13 is such that the contact portion 32 of the heat transfer block 30 is in contact with the inner sleeve 20 so that the heat of the inner sleeve 20 is transferred to the cooling medium through the contact portion 32, the block insertion groove ( In 12), at least one is formed in a cross section such as a circle or a square.
  • the inner sleeve 20 is preferably cast iron and is treated with a salt bath to secure abrasion resistance, and preferably consists of a sleeve preheating-salt bath heat treatment-cooling process.
  • the sleeve made of cast iron is put in a heater and preheated, and the preheating temperature is lower than the salt bath heat treatment temperature, for example, 400 °C to 500 °C, and the salt bath is increased by increasing the sleeve temperature through a preheating process of 10 minutes to 30 minutes.
  • the salt bath heat treatment temperature for example, 400 °C to 500 °C
  • the salt bath is increased by increasing the sleeve temperature through a preheating process of 10 minutes to 30 minutes.
  • Cooling the salt-heated sleeve and cooling conditions are primary cooling (250 °C ⁇ 350 °C in the salt bath, primary cooling for 30 ⁇ 60 minutes)-Second cooling (sleeve is put in the cooling furnace and cooled through the cooling medium (cooling water) 70 °C ⁇ 150 °C, 1st rapid cooling for 10 ⁇ 30 minutes)-2nd cooling (room temperature, 22 hours ⁇ 24 hours), and the inner sleeve 20 completed through 3rd cooling is a property due to cooling Does not cause changes or cracks.
  • the heat transfer block 30 is a material having excellent heat conductivity (preferably copper and, of course, not limited to copper), and the structure is composed of a block body 31 and a contact portion 32.
  • the block body 31 is inserted into the block insertion groove 12 of the cylinder liner body 10 and induces the exchange of heat of the inner sleeve 20 and heat of the cooling medium.
  • the block body 31 may have an outer circumferential surface in an uneven shape in order to increase the heat transfer area with the cooling medium.
  • the contact portion 32 is configured to contact the inner sleeve 20 so that the heat of the inner sleeve 20 is not directly transmitted through the cylinder liner body 10 but indirectly, and passes through the hole 13 so that the end portion is the inner sleeve. (20).
  • a contact portion insertion groove into which an end portion of the contact portion 32 is inserted into the outer circumferential surface of the inner sleeve 20 may be configured.
  • the heat transfer block 30 is inserted and installed in the cylinder liner body 10.
  • production errors and assembly errors occur between the heat transfer block 30 and the cylinder liner body 10, resulting in assembly failure and cooling.
  • Leakage of the medium or deterioration of heat transfer efficiency may occur, and in order to solve this, the heat transfer block 30 is manufactured through curing after the heat transfer material (liquid copper, etc.) is filled in the block insertion groove 12 and the hole 13 It is also possible.
  • the inner sleeve 20 must be coupled to the inner circumferential surface of the cylinder liner body 10 to block the hole 13, and the cylinder liner body 10 is circular, so that the filling material is not leaked
  • a cover capable of injecting and filling the filling material while covering the insertion groove 12 may be used.
  • the method of manufacturing the heat transfer block is changed.
  • the manufacturing method for the prefabricated heat transfer block consists of the process of assembling the cylinder liner body 10 and the inner sleeve 20-assembling the heat transfer block 30, and the manufacturing method for the filling type heat transfer block is the cylinder liner body 10 and Assembling the inner sleeve 20-Filling the filling material into the block insertion groove 12 and the hole 13 of the cylinder liner body 10-consists of a process of curing.
  • the present invention is applied to the thermal insulation cap 40 to prevent the penetration of external air from the bottom to prevent wear and heat retention degradation due to the penetration of air.
  • the insulating cap 40 includes a wedge portion 41 which is tubular and is coupled wedge-type with the cylinder liner body 10. Therefore, a wedge portion of an inclination corresponding to the wedge portion 41 is formed on the lower outer circumferential surface of the cylinder liner body 10.
  • a ring-shaped blocking jaw 42 that covers the lower ends of the cylinder liner body 10 and the inner sleeve 20 to prevent air from penetrating between the cylinder liner body 10 and the inner sleeve 20.
  • the heat-retaining cap 40 can be made of a metal having low thermal conductivity (iron, nickel, etc.), forcibly pressing the assembly of the cylinder liner body 10 and the inner sleeve 20 and the heat transfer block 30 into the cylinder block 1, etc. After assembling to can be post-coupled between the cylinder liner body 10 and the cylinder block 1, of course, it is also possible to be installed in the cylinder block 1 after being pre-coupled to the cylinder liner body 10.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

La présente invention concerne une chemise de cylindre présentant une résistance à l'usure et une résistance à la chaleur. Le but de la présente invention est de diviser la chemise de cylindre en un corps sur l'extérieur et un manchon sur l'intérieur, pour garantir une résistance à l'usure en soumettant le manchon sur l'intérieur à un traitement thermique dans un bain de sel, et pour sécuriser la résistance à la chaleur par échange de chaleur direct entre le manchon sur l'intérieur et un milieu de refroidissement circulant à travers une double enveloppe de refroidissement. Une chemise de cylindre présentant une résistance à l'usure et une résistance à la chaleur selon la présente invention comprend : un corps de chemise de cylindre cylindrique (10) inséré/fixé dans un trou dans un bloc-cylindres ; un manchon interne (20) inséré/fixé dans le corps de chemise de cylindre, le manchon interne (20) ayant une surface traitée thermiquement ; et un bloc de transfert de chaleur (30) relié à la partie périphérique du corps de chemise de cylindre de telle sorte que de la chaleur est transférée entre ce dernier et le manchon interne, le bloc de transfert de chaleur (30) correspondant à une double enveloppe de refroidissement (2) du bloc-cylindres (1) et refroidissant le manchon interne au moyen d'un milieu de refroidissement circulant à travers la double enveloppe de refroidissement. Le corps de chemise de cylindre comprend une rainure d'insertion de bloc (12) ménagée sur sa surface périphérique externe de telle sorte que le bloc de transfert de chaleur est inséré en son sein, et un trou (13) ménagé dans la rainure d'insertion de bloc de telle sorte que l'intérieur et l'extérieur de ce dernier sont pénétrés. Le bloc de transfert de chaleur comprend un corps de bloc en forme de plaque (31) inséré/fixé dans la rainure d'insertion de bloc de façon à ne pas dépasser de la surface périphérique externe du corps de chemise de cylindre, et une partie de contact (32) formée de façon à faire saillie à partir de la surface périphérique interne du corps de bloc de telle sorte qu'une de ses extrémités pénètre dans le trou et entre en contact avec le manchon interne.
PCT/KR2019/015380 2018-11-20 2019-11-13 Chemise de cylindre résistante à l'usure et résistante à la chaleur Ceased WO2020105938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180143357A KR102128537B1 (ko) 2018-11-20 2018-11-20 내마모성과 내열성 실린더 라이너
KR10-2018-0143357 2018-11-20

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Publication Number Publication Date
WO2020105938A1 true WO2020105938A1 (fr) 2020-05-28

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PCT/KR2019/015380 Ceased WO2020105938A1 (fr) 2018-11-20 2019-11-13 Chemise de cylindre résistante à l'usure et résistante à la chaleur

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KR (1) KR102128537B1 (fr)
WO (1) WO2020105938A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119878389A (zh) * 2024-12-27 2025-04-25 中国船舶集团有限公司第七一一研究所 气缸套、发动机及船舶

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200645U (fr) * 1981-06-16 1982-12-20
JPH10103150A (ja) * 1996-09-30 1998-04-21 Mitsubishi Heavy Ind Ltd 二層シリンダライナ
US20040231630A1 (en) * 2003-05-22 2004-11-25 Liebert Jeffrey W. Cylinder sleeve support for an internal combustion engine
JP2005201084A (ja) * 2004-01-13 2005-07-28 Toyota Motor Corp シリンダブロック
JP2018021505A (ja) * 2016-08-03 2018-02-08 マツダ株式会社 エンジンの冷却構造

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100409567B1 (ko) 2000-09-22 2003-12-18 현대자동차주식회사 엔진의 실린더라이너 냉각구조
KR101183345B1 (ko) 2005-12-08 2012-09-14 두산인프라코어 주식회사 엔진의 실린더라이너

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200645U (fr) * 1981-06-16 1982-12-20
JPH10103150A (ja) * 1996-09-30 1998-04-21 Mitsubishi Heavy Ind Ltd 二層シリンダライナ
US20040231630A1 (en) * 2003-05-22 2004-11-25 Liebert Jeffrey W. Cylinder sleeve support for an internal combustion engine
JP2005201084A (ja) * 2004-01-13 2005-07-28 Toyota Motor Corp シリンダブロック
JP2018021505A (ja) * 2016-08-03 2018-02-08 マツダ株式会社 エンジンの冷却構造

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119878389A (zh) * 2024-12-27 2025-04-25 中国船舶集团有限公司第七一一研究所 气缸套、发动机及船舶

Also Published As

Publication number Publication date
KR102128537B1 (ko) 2020-06-30
KR20200058800A (ko) 2020-05-28

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