JPH0481552A - Cylinder liner - Google Patents

Cylinder liner

Info

Publication number
JPH0481552A
JPH0481552A JP19260390A JP19260390A JPH0481552A JP H0481552 A JPH0481552 A JP H0481552A JP 19260390 A JP19260390 A JP 19260390A JP 19260390 A JP19260390 A JP 19260390A JP H0481552 A JPH0481552 A JP H0481552A
Authority
JP
Japan
Prior art keywords
cylindrical body
water jacket
cylinder liner
heat
coating layer
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
JP19260390A
Other languages
Japanese (ja)
Inventor
Shigetoshi Jogan
茂利 成願
Ichizo Tsukuda
市三 佃
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.)
Altemira Co Ltd
Original Assignee
Showa Aluminum Corp
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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP19260390A priority Critical patent/JPH0481552A/en
Publication of JPH0481552A publication Critical patent/JPH0481552A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To make a cylinder liner lighter in wight as well as to cool it in an efficient manner by forming a heat-wear resistant coating layer on an inner circumferential surface of an aluminum expanded material-make cylindrical body, and installing a water jacket in the peripheral wall. CONSTITUTION:A cylinder liner is composed of an aluminum expanded material- make cylindrical body 1 as a whole. A heat-wear resistant coating layer 2 is formed on an inner circumferential surface of this cylindrical body 1. In addition, plural pieces of cooling water passages 3 are formed in a peripheral wall 1a of the cylindrical body 1 at specified intervals in the circumferential direction, through which a water jacket 4 is installed. This water jacket 4 is made so as to be interconnected to another water jacket being formed in a cylinder block by a proper means.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、たとえば自動車用エンジンのシリンダ内に
嵌められるシリンダライナに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cylinder liner that is fitted into the cylinder of, for example, an automobile engine.

この明細書において、「アルミニウム」という語には、
純アルミニウムの他にアルミニウム合金を含むものとす
る。また、この明細書において、「展伸材」とは、押出
加工、衝撃押出加工、鍛造等の塑性加工によって成形さ
れた物品を示すものとする。In this specification, the term "aluminum" refers to
In addition to pure aluminum, aluminum alloys are included. Furthermore, in this specification, the term "stretched material" refers to an article formed by plastic working such as extrusion, impact extrusion, and forging.

従来の技術 この種シリンダライナは、燃料が爆発するさいの燃焼熱
や、ピストンリングとの摺動熱の影響によって極めて高
温にさらされる。このため、シリンダライナには耐熱性
が要求されるとともに、耐摩耗性も要求される。そして
、一般に、シリンダライナは、シリンダブロックに形成
されたウォータジャケット内を流れる冷却水によって冷
却されるようになっている。BACKGROUND OF THE INVENTION Cylinder liners of this type are exposed to extremely high temperatures due to the heat of combustion during fuel explosion and the heat of sliding with piston rings. Therefore, the cylinder liner is required not only to have heat resistance but also to have wear resistance. Generally, the cylinder liner is cooled by cooling water flowing within a water jacket formed in the cylinder block.

従来、このようなシリンダライナとしては、高級鋳鉄を
用いてたとえば遠心鋳造法により成形された円筒状体よ
りなり、その内周面が硬質クロムメツキ層で被覆された
のものが用いられていた。Conventionally, such cylinder liners have been made of a cylindrical body made of high-grade cast iron, for example, by centrifugal casting, and whose inner peripheral surface is coated with a hard chrome plating layer.

発明が解決しようとする課題 しかしながら、従来のシリンダライナは、重量が大きい
ので、自動車の性能向上のための軽量化を阻害するとい
う問題があった。また、従来のシリンダライナは熱伝導
性が劣るので、シリンダブロックに形成されたウォータ
ジャケット内を流れる冷却水による冷却効果が十分では
なく、ピストンリングの焼き付きが生じるおそれがあっ
た。Problems to be Solved by the Invention However, conventional cylinder liners have a large weight, which hinders efforts to reduce the weight of automobiles in order to improve their performance. Further, since conventional cylinder liners have poor thermal conductivity, the cooling effect of the cooling water flowing in the water jacket formed in the cylinder block is not sufficient, and there is a risk that the piston rings may seize.

この発明の目的は、上記問題を解決したシリンダライナ
を提供することにある。An object of the present invention is to provide a cylinder liner that solves the above problems.

課遅を解決するための手段 この発明によるシリンダライナは、アルミニウム展伸材
製円筒状体よりなり、その内周面に耐熱耐摩耗性被覆層
が形成され、周壁にウォータジャケットが設けられてい
るものである。A cylinder liner according to the present invention is made of a cylindrical body made of expanded aluminum, and has a heat-resistant and abrasion-resistant coating layer formed on its inner peripheral surface, and a water jacket provided on its peripheral wall. It is something.

上記において、円筒状体は、たとえばＪＩＳ　Ａ６０６
３合金や、同６０６１合金を用いて押出加工により形成
される。In the above, the cylindrical body is, for example, JIS A606
It is formed by extrusion using 3 alloy or 6061 alloy.

作　　　用 アルミニウム展伸材製円筒状体よりなるので、従来のも
のに比べて軽量になる。また、円筒状体の周壁にウォー
タジャケットが設けられているので、その内部に冷却水
を流通させることにより、シリンダライナを効率良く冷
却することができる。Function: Since it is made of a cylindrical body made of expanded aluminum, it is lighter than conventional ones. Further, since the water jacket is provided on the peripheral wall of the cylindrical body, the cylinder liner can be efficiently cooled by circulating cooling water inside the water jacket.

実　　施　　例 以下、この発明の実施例を、図面を参照して説明する。Example Embodiments of the present invention will be described below with reference to the drawings.

図面において、シリンダライナは、全体がアルミニウム
展伸材製円筒状体（１）よりなる。円筒状体（１）の内
周面には、耐熱耐摩耗性被覆層（２）か形成されている
。円筒状体（１）の周壁（１ａ）には円周方向に所定間
隔をおいて複数の冷却水通路（３）形成され、これによ
りウォータジャケット（４）が設けられている。図示は
省略したか、このウォータジャケット（４）は適当な手
段によってシリンダブロックに形成されているウォータ
ジャケットに連通させられるようになされている。In the drawing, the cylinder liner is entirely made of a cylindrical body (1) made of wrought aluminum material. A heat-resistant and wear-resistant coating layer (2) is formed on the inner peripheral surface of the cylindrical body (1). A plurality of cooling water passages (3) are formed at predetermined intervals in the circumferential direction on the peripheral wall (1a) of the cylindrical body (1), thereby providing a water jacket (4). Although not shown, this water jacket (4) is made to communicate with a water jacket formed in the cylinder block by suitable means.

シリンダライナは、たとえば次のような方法でつくられ
る。The cylinder liner is made, for example, by the following method.

すなわち、押出加工により、図面に示すような横断面形
状を有するアルミニウム押出型材を形成し、これを所定
長さに切断して円筒状体（１）をつくる。ついで、ニッ
ケル、クロム、へΩ−Ｓｉ系合金等の耐熱耐摩耗性を有
する合金を用いて、線爆溶射法、またはその他の溶射法
により、円筒状体（１）の内周面に耐熱耐摩耗性被覆層
（２）を形成する。その後、耐熱耐摩耗性被覆層（２）
にホーニングを施して、その表面粗さを抜き取り部分の
最大粗さ（Ｒ，、、）でたとえば２〜３μｍ程度となる
ようにする。また、円筒状体（１）の外周面に、切削等
の仕上げ加工を施す。こうして、シリンダライナがつく
られる。That is, by extrusion processing, an aluminum extruded material having a cross-sectional shape as shown in the drawing is formed, and this is cut into a predetermined length to produce a cylindrical body (1). Next, the inner peripheral surface of the cylindrical body (1) is coated with a heat-resistant and wear-resistant alloy such as nickel, chromium, and Ω-Si alloy by wire blast spraying or other thermal spraying methods. Forming an abradable coating layer (2). After that, a heat-resistant and abrasion-resistant coating layer (2)
The surface roughness of the sampled portion is honed to a maximum roughness (R, . . . ) of about 2 to 3 μm, for example. Further, finishing processing such as cutting is performed on the outer circumferential surface of the cylindrical body (1). In this way, a cylinder liner is created.

発明の効果 この発明のシリンダライナは、上述のように、従来のも
のに比べて軽量になるので、たとえばエンジン全体の軽
量化を図ることができ、自動車の性能を向上させること
が可能となる。また、シリンダライナを効率良く冷却す
ることができるので、ピストンの焼き付きの発生を防止
できる。Effects of the Invention As described above, the cylinder liner of the present invention is lighter in weight than conventional cylinder liners, making it possible to reduce the weight of the entire engine, for example, and improve the performance of the automobile. Furthermore, since the cylinder liner can be efficiently cooled, seizure of the piston can be prevented.

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

図面はこの発明のシリンダライナの実施例を示す斜視図
である。 （１）・・・円筒状体、（１ａ）・・・周壁、（２）耐
熱耐摩耗性被覆層、（４）・・・ウォータジャケット。The drawing is a perspective view showing an embodiment of the cylinder liner of the present invention. (1)...Cylindrical body, (1a)...Peripheral wall, (2) Heat-resistant and wear-resistant coating layer, (4)...Water jacket.

Claims (1)

【特許請求の範囲】[Claims] アルミニウム展伸材製円筒状体よりなり、その内周面に
耐熱耐摩耗性被覆層が形成され、周壁にウォータジャケ
ットが設けられているシリンダライナ。A cylinder liner consisting of a cylindrical body made of expanded aluminum, with a heat-resistant and abrasion-resistant coating layer formed on its inner peripheral surface, and a water jacket provided on its peripheral wall.
JP19260390A 1990-07-19 1990-07-19 Cylinder liner Pending JPH0481552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19260390A JPH0481552A (en) 1990-07-19 1990-07-19 Cylinder liner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19260390A JPH0481552A (en) 1990-07-19 1990-07-19 Cylinder liner

Publications (1)

Publication Number Publication Date
JPH0481552A true JPH0481552A (en) 1992-03-16

Family

ID=16294012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19260390A Pending JPH0481552A (en) 1990-07-19 1990-07-19 Cylinder liner

Country Status (1)

Country Link
JP (1) JPH0481552A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006002606A (en) * 2004-06-16 2006-01-05 Honda Motor Co Ltd Cylinder block
WO2009060672A1 (en) * 2007-11-08 2009-05-14 Toyota Jidosha Kabushiki Kaisha Cylinder block and method of manufacturing same
US9803583B2 (en) 2015-03-18 2017-10-31 Federal-Mogul Llc Double wall self-contained liner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006002606A (en) * 2004-06-16 2006-01-05 Honda Motor Co Ltd Cylinder block
WO2009060672A1 (en) * 2007-11-08 2009-05-14 Toyota Jidosha Kabushiki Kaisha Cylinder block and method of manufacturing same
US8096270B2 (en) 2007-11-08 2012-01-17 Toyota Jidosha Kabushiki Kaisha Cylinder block and method for manufacturing the same
US9803583B2 (en) 2015-03-18 2017-10-31 Federal-Mogul Llc Double wall self-contained liner

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