JPS6143253A - Cylinder liner - Google Patents

Cylinder liner

Info

Publication number
JPS6143253A
JPS6143253A JP16286884A JP16286884A JPS6143253A JP S6143253 A JPS6143253 A JP S6143253A JP 16286884 A JP16286884 A JP 16286884A JP 16286884 A JP16286884 A JP 16286884A JP S6143253 A JPS6143253 A JP S6143253A
Authority
JP
Japan
Prior art keywords
cylinder liner
cylinder
liner
piston ring
heat
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.)
Pending
Application number
JP16286884A
Other languages
Japanese (ja)
Inventor
Masatoshi Hashimoto
橋本　正俊
Yuichi Nakamura
祐一 中村
Nobuhiko Yasuda
保田　順彦
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.)
Japan Steel Works Ltd
Mitsubishi Heavy Industries Ltd
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Japan Steel Works Ltd
Mitsubishi Heavy Industries Ltd
Technical Research and Development Institute of Japan Defence Agency
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 Japan Steel Works Ltd, Mitsubishi Heavy Industries Ltd, Technical Research and Development Institute of Japan Defence Agency filed Critical Japan Steel Works Ltd
Priority to JP16286884A priority Critical patent/JPS6143253A/en
Publication of JPS6143253A publication Critical patent/JPS6143253A/en
Pending legal-status Critical Current

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 
    • F02F1/18—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
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0085—Materials for constructing engines or their parts
    • F02F7/0087—Ceramic materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • F16J10/04—Running faces; Liners

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To reduce the cooling loss from a cylinder liner by preparing a cylinder-liner basic member from sautenite casted-iron and forming a heat-insulating covered layer made of ceramics onto the inner surface in the upper part of the cylinder liner and applying porous chrome plating onto the slidable surface on the inner surface of the cylinder liner. CONSTITUTION:A cylinder-liner basic member 11 is made of austenite casted- iron, and a heat-insulated coated layer 12 made of ceramics is formed through the multilayered coating metallizing or shrink-fit from the upper edge of the inner peripheral surface of a cylinder liner to the nonslidable surface 11a of a piston ring 13. A porous chrome-plated layer 14 is formed onto the slidable part 11b of the piston ring 13 on the inner peripheral surface of the cylinder liner. Therefore, the cooling loss from the cylinder liner can be reduced.

Description

【発明の詳細な説明】 （産業上の利用分野ン 本発明は内燃機用シリンダライナの改良に関し、特にシ
リンダ内からの熱損失金低減しうるシリンダライナに関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a cylinder liner for an internal combustion engine, and more particularly to a cylinder liner capable of reducing heat loss from within the cylinder.

（従来の技術） 内燃機関用シリンダライナは、燃焼時、高温燃焼ガスに
、さらされている為、通常シリンダライナ外周部をエン
ジン・ジャケット・水で冷却しているが、この為シリン
ダライチ壁全通して、シリンダ内から冷却水へ熱が流れ
、これが冷却損失となって、エンジンの熱効率を低下さ
せる原因の一つになっている。この対策として、シリン
ダライナ材に熱伝導率の低い材料を適用してシリンダ内
からの熱損失を小さくシ、エンジン熱効率向上、又は冷
却損失低減によるクーラー類小型化等を計る試みが近年
、各方面で行われている。(Prior art) Cylinder liners for internal combustion engines are exposed to high-temperature combustion gas during combustion, so the outer circumference of the cylinder liner is normally cooled by the engine jacket and water, but for this reason, the entire cylinder lychee wall is Through this, heat flows from the inside of the cylinder to the cooling water, resulting in cooling loss, which is one of the causes of reducing the thermal efficiency of the engine. As a countermeasure to this problem, attempts have been made in recent years in various fields to reduce heat loss from within the cylinder by applying materials with low thermal conductivity to the cylinder liner, improve engine thermal efficiency, or downsize coolers by reducing cooling loss. It is being carried out in

第２図、第３図は、これらに関する従来例である。第２
図は鋳鉄等の金属ライナ・スリーブ１１Ｃ，ジルコニア
（ＺｒＯ富）、ＳＲ化はイ素（５ｉｌＮ４）、等、熱伝
導率の低いセラミックス裂シリンダ内筒２を焼嵌等によ
り挿入したものである。第３図は鋳鉄等のシリンダライ
ナ３内局面に、ジルコニア（ＺｒＯ，）等のセラミック
スを溶射によりコーティングし、断熱ニーティング層４
を設けたものである。FIGS. 2 and 3 are conventional examples related to these. Second
The figure shows a cylinder inner cylinder 2 made of a metal liner sleeve 11C made of cast iron or the like, zirconia (ZrO rich), SR made of ion (5ilN4), etc., which has a low thermal conductivity, and is inserted by shrink fitting or the like. Figure 3 shows the inner surface of a cylinder liner 3 made of cast iron or the like coated with ceramics such as zirconia (ZrO,) by thermal spraying to form a heat insulating neating layer 4.
It has been established.

以上のように第２図、第３図の従来例は、いずれもセラ
ミックス材料の材料特性により冷却損失低減を計ろうと
するものであるが、周昶の如く、セラミックス材料を構
造材料として使用することは、セラミックス材料の信頼
ｔ！＋、は、あまりに低く、セラミックスの焼嵌、溶射
コーティングについてもピストンリングとの高温摺動条
件で使用するのに、実用には程遠いのが現状である。As mentioned above, the conventional examples shown in Figures 2 and 3 both attempt to reduce cooling loss by utilizing the material properties of ceramic materials, but as in Shusho, it is not possible to use ceramic materials as structural materials. is the reliability of ceramic materials! + is so low that it is currently far from practical for ceramic shrink-fitting and thermal spray coating, even though they are used under high-temperature sliding conditions with piston rings.

そのため、シリンダ内からの冷却損失を低減してエンジ
ン熱効率向上１、クーラー類小型化等を計る為、シリン
ダライナ材料として熱伝導率の低い材料を適用する必要
があり、かつピストン、ピストンリング、との高温摺動
潤滑条件、及び材料強度釣にも充分、実用に供する信頼
性を持つシリンダライナが必要となった。Therefore, in order to reduce cooling loss from within the cylinder, improve engine thermal efficiency1, and downsize coolers, it is necessary to use a material with low thermal conductivity as the cylinder liner material, and the piston, piston ring, etc. There was a need for a cylinder liner that would be reliable enough for practical use, even under high-temperature sliding lubrication conditions and material strength.

（発明が解決しようとする問題点） 本発明は、上記要望に答え、熱損失が少なく、しかも高
温摺動潤滑特性に優れたシリンダライナを提供しようと
するものである。(Problems to be Solved by the Invention) The present invention is intended to meet the above-mentioned needs and provide a cylinder liner with low heat loss and excellent high-temperature sliding lubrication properties.

（問題点を解決するための手段） 本発明は上記問題点を解決するため下記の構成を採るも
のである。(Means for Solving the Problems) In order to solve the above problems, the present invention adopts the following configuration.

■　シリンダライナ母材としてオーステナイト系鋳鉄を
使用する。すなわち、シリンタ゛内〃λらの冷却損失を
低減する為、シリンダライナ材として、通常使用されて
いるシリンダライナ材熱伝導率の約１／４の低熱伝導率
値のオーステナイト系鋳鉄にレジスト）を使用する為、
冷却損失低減に効果があり、しかも通常シリンダライナ
打金上まわる強度、信頼性を有する。■ Austenitic cast iron is used as the cylinder liner base material. In other words, in order to reduce cooling loss inside the cylinder, we used austenitic cast iron (resist), which has a low thermal conductivity value of about 1/4 of the thermal conductivity of normally used cylinder liner materials, as the cylinder liner material. In order to
It is effective in reducing cooling loss, and has greater strength and reliability than ordinary cylinder liner hammers.

■　シリンダライナ内周面のピストンリンクドの非摺動
面には冷却損失低減効果を一層向上させる為、ジルコニ
ア（ＺｒＯ寞）窒化けい素（ｓｌ、Ｎ４）などの焼嵌・
溶射による断熱コーティング層を設ける。■ In order to further improve the cooling loss reduction effect on the non-sliding surface of the piston link on the inner circumferential surface of the cylinder liner, shrink-fitting materials such as zirconia (ZrO) and silicon nitride (SL, N4)
Provide a heat-insulating coating layer by thermal spraying.

■　シリンダライナ内局面のピストンリング摺動面には
高温摺動潤滑条件に充分な信頼性を有スる多孔質クロム
メッキを施す。■ The sliding surface of the piston ring inside the cylinder liner is coated with porous chrome plating, which is reliable enough to withstand high-temperature sliding lubrication conditions.

すなわち本発明はシリンダライナ母材の材質上オーステ
ナイト系鋳鉄とし、シリンダライナ内面上部のピストン
リング非摺動部分にセラミックスよすなる断熱被覆廣が
設けられ、かつシリンダライナ内面のピストンリング摺
動面には多孔質クロムメッキが施こされてなるシリンダ
ライナである。That is, in the present invention, the cylinder liner base material is made of austenitic cast iron, the piston ring non-sliding part on the upper inner surface of the cylinder liner is provided with a heat insulating coating made of ceramic, and the piston ring sliding surface on the inner surface of the cylinder liner is provided with a heat insulating coating made of ceramic. is a cylinder liner made of porous chrome plating.

以下、本発明の一実施態様を第１図に示し、本発明を更
に詳述する。第１図において、１１はオーステナイト系
鋳鉄（例えばニレジスト）よりなるシリンダライナ母材
であり、シリンダライナ内周面の上端よりピストンリン
グ１３非摺動部１１ａ　Ｉｃは、多層コーティングの溶
射又は焼嵌にヨｖＺｒＯ，，５ｔ３Ｎ４などのセラミッ
クスの断熱コーティング層１２が設けられている。又シ
リンダライナ内周面のピストンリング１５の摺動部１１
′ｂｌＣハ多孔度１５〜５５％の多孔質クロムメッキ層
１４が設けられている。Hereinafter, one embodiment of the present invention is shown in FIG. 1, and the present invention will be explained in further detail. In FIG. 1, 11 is a cylinder liner base material made of austenitic cast iron (for example Niresist), and a piston ring 13 non-sliding portion 11a Ic is formed from the upper end of the inner peripheral surface of the cylinder liner by thermal spraying or shrink fitting of a multilayer coating. A heat insulating coating layer 12 of ceramic such as ZrO, 5T3N4 is provided. Also, the sliding part 11 of the piston ring 15 on the inner peripheral surface of the cylinder liner
A porous chromium plating layer 14 having a porosity of 15 to 55% is provided.

本発明は上記したような構成をもつシリンダライナであ
る為、下記のような効果を奏する。Since the present invention is a cylinder liner having the above-described configuration, it has the following effects.

（効果） （１）　　シリンダライナ母材の材質をオーステナイト
系鋳鉄とすることにより通常の鋳鉄シリンダライナ材の
熱伝導率よりも、約１／４の熱伝導率となる為、シリン
ダライナからの冷却損失が低減する。(Effects) (1) By using austenitic cast iron as the material of the cylinder liner base material, the thermal conductivity is approximately 1/4 that of normal cast iron cylinder liner material, so cooling from the cylinder liner is reduced. Losses are reduced.

（２）　　シリンダライナ上部のピストンリング非摺動
部にセラミックスによる断熱コーティング層が設けであ
る為、ピストン上死点以後最も熱損失流の大きい部分で
の熱損失流低減に一層効果があり、断熱コーティング層
がピストンリング非摺動部分である為、セラミックス・
コーティング層の信頼性も高い。(2) Since the non-sliding part of the piston ring at the top of the cylinder liner is provided with a heat insulating coating layer made of ceramics, it is more effective in reducing the heat loss flow in the area where the heat loss flow is the largest after the piston top dead center. Since the coating layer is the non-sliding part of the piston ring, ceramics
The reliability of the coating layer is also high.

（３）　　シリンダライナのピストンリング摺動部分は
、多孔産金規定した多孔質クロムメッキ力玉施こされて
いる為、潤滑油の保油性が良く、シリンダライナ熱損失
低減によるシリンタ゛ライナ内周面摺動部の温度上昇に
対しても信頼性の高い高温摺動潤滑条件が得られる。(3) The piston ring sliding part of the cylinder liner is coated with porous chrome plating using porous gold, so it has good lubricating oil retention and reduces cylinder liner heat loss on the inner peripheral surface of the cylinder liner. Highly reliable high-temperature sliding lubrication conditions can be obtained even when the temperature of the sliding part increases.

（本発明の適用分野） 本発明は一般車両用、荷役運搬機械用、建設機械用、特
車用、舶用等に使用される２サイクル、４サイクル内燃
機関に広く利用すること７５；、できる。(Field of Application of the Present Invention) The present invention can be widely applied to two-stroke and four-stroke internal combustion engines used in general vehicles, cargo handling machines, construction machines, special vehicles, ships, etc.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明シリンダライチの一実施態様を示す図で
あり、第２図及び第３図は従来のシリンダライチの例を
示す図である。 復代理人　　内　１）　　明 復代理人　　萩　原　亮　− 第１図 第２図 第３図FIG. 1 is a diagram showing an embodiment of the cylinder lychee of the present invention, and FIGS. 2 and 3 are diagrams showing an example of a conventional cylinder lychee. Sub-Agents 1) Meifu Agent Ryo Hagiwara - Figure 1 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] シリンダライナ母材の材質をオーステナイト系鋳鉄とし
、シリンダライナ内面上部のピストンリング非摺動部分
にセラミックスよりなる断熱被覆層が設けられ、かつシ
リンダライナ内面のピストンリング摺動面には多孔質ク
ロムメッキが施こされてなるシリンダライナ。The material of the cylinder liner base material is austenitic cast iron, a heat insulating coating layer made of ceramic is provided on the non-sliding part of the piston ring on the upper inner surface of the cylinder liner, and porous chrome plating is applied to the sliding surface of the piston ring on the inner surface of the cylinder liner. Cylinder liner that has been applied.
JP16286884A 1984-08-03 1984-08-03 Cylinder liner Pending JPS6143253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16286884A JPS6143253A (en) 1984-08-03 1984-08-03 Cylinder liner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16286884A JPS6143253A (en) 1984-08-03 1984-08-03 Cylinder liner

Publications (1)

Publication Number Publication Date
JPS6143253A true JPS6143253A (en) 1986-03-01

Family

ID=15762786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16286884A Pending JPS6143253A (en) 1984-08-03 1984-08-03 Cylinder liner

Country Status (1)

Country Link
JP (1) JPS6143253A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014080903A (en) * 2012-10-16 2014-05-08 Tpr Co Ltd Cylinder liner, and method of manufacturing the same
JP2014173496A (en) * 2013-03-08 2014-09-22 Mazda Motor Corp Method for manufacturing heat insulation structure of engine combustion chamber

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627326B2 (en) * 1978-10-30 1981-06-24
JPS5732259U (en) * 1980-08-01 1982-02-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627326B2 (en) * 1978-10-30 1981-06-24
JPS5732259U (en) * 1980-08-01 1982-02-19

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014080903A (en) * 2012-10-16 2014-05-08 Tpr Co Ltd Cylinder liner, and method of manufacturing the same
JP2014173496A (en) * 2013-03-08 2014-09-22 Mazda Motor Corp Method for manufacturing heat insulation structure of engine combustion chamber

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