JPH0510543B2 - - Google Patents
Info
- Publication number
- JPH0510543B2 JPH0510543B2 JP59262274A JP26227484A JPH0510543B2 JP H0510543 B2 JPH0510543 B2 JP H0510543B2 JP 59262274 A JP59262274 A JP 59262274A JP 26227484 A JP26227484 A JP 26227484A JP H0510543 B2 JPH0510543 B2 JP H0510543B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- long fibers
- ceramic long
- piston
- aluminum
- 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.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910010271 silicon carbide Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- -1 Syria Inorganic materials 0.000 description 1
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018134 Al-Mg Inorganic materials 0.000 description 1
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018137 Al-Zn Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910018467 Al—Mg Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 229910018573 Al—Zn Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910019064 Mg-Si Inorganic materials 0.000 description 1
- 229910019406 Mg—Si Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
Description
〔産業上の利用分野〕
この発明は、内燃機関のピストンリングに関す
る。
〔従来技術〕
従来、内燃機関のピストンリングとしては、株
式会社山海堂から刊行された自動車工学全書第４
巻ガソリンエンジン第27頁に記載されているよう
に、ねずみ鋳鉄にクロムメツキしたものが多く用
いられている。
〔発明が解決しようとする問題点〕
しかしながら、このような従来のピストンリン
グにあつては、リング本体が鉄系材料で構成され
ているため、リング重量の軽減には限界があり、
エンジンの高速回転域でリングがフタツタリング
を起こることがあり、トルクの低下、オイル消費
の増加という問題点があつた。加えて、近年のタ
ーボ過給によるシリンダ最大内圧の増加により、
前記クロムメツキでは、耐焼付性、耐摩耗性が充
分ではない場合も生じ得るという問題点があつ
た。
〔問題点を解決するための手段〕
この発明は、このような従来の問題点に着目し
てなされたもので、ピストンリングをＣ，Al2
O3，SiC等のセラミツク長繊維で強化したアルミ
ニウムで構成し、該セラミツク長繊維をリング状
に配し、かつリングのフエース面はセラミツク長
繊維が部分的に突出しており、あらさがRz1.2〜
20とすることにより、上記問題点を解決すること
を目的としている。
本発明において、母材であるアルミニウム系合
金には、通常の純アルミニウム、あるいは、Al
−Cu系、Al−Mn系、Al−Si系、Al−Mg系、Al
−Mg−Si系、Al−Zn系、Al−Fe系などを用い
ることができる。
セラミツク長繊維は、炭素（Ｃ）、アルミナ、
シリア、炭化珪素（β−SiC）等を用いることが
できる。長さは、リングの円周方向の長さと等し
い方が好ましいが、１cm以上であれば良い。太さ
は、一般に市販されている直径数μm〜数十μm、
好ましくは10μm前後が用いられる。
本発明のピストンリングは、型内にセラミツク
長繊維を配し、熔融した母材金属を型内に流し込
み、好ましくは溶湯鍛造、プレツシヤーダイカス
トの如く、圧力を加えて鋳込む方法により製造で
きる。勿論、一度に複数本分の円筒状の形状に成
形し、後で切断してピストンリングとしても良
い。
〔作用〕
本発明のピストンリングは、母材金属としてア
ルミニウム、又は、アルミニウム系合金を用いて
いるので軽量である。さらにピストンリング中に
リング状、すなわちフエース面の長手方向に沿つ
てセラミツク長繊維を配し、かつリングのフエー
ス面はセラミツク長繊維が部分的に突出してお
り、あらさをRz1.2〜20とすることにより、フエ
ース面の微細な凹部にエンジンオイルが溜り、耐
摩耗性を一層向上させることができ、しかも、セ
ラミツク長繊維の端面がフエース面に突出さない
ので、シリンダ内面の摩耗も少なく抑えることが
できる。
〔実施例〕
以下、この発明を図面に基づいて説明する。第
１図はこの発明の一実施例を示す図である。
まず構成を説明すると、１はリング本体、２は
母材金属であるアルミニウム、３はセラミツク長
繊維である。セラミツク長繊維３は、リングの円
周方向に配向して、アルミニウム２中に分散させ
た。リング断面の詳細は第２図に示す模式図の如
き形態となつており、フエース面４に、前記セラ
ミツク長繊維３が部分的に突出している。
セラミツク長繊維としては、第１表に示す、炭
素繊維（Ｃ；実施例１）、アルミナとシリカの混
合繊維（Al2O3：85重量％、SiO2：15重量％；実
施例２）、炭化珪素（β−SiC；実施例３）の３
種類のピストンリングを作成した。尚、ピストン
リングには、ピストンへのリング装着時に装着時
応力が作用し、シリンダライナへ挿入時に使用時
応力が作用する。第３図にシリンダライナ径φ83
の４気筒ガソリンエンジン用のピストンリングと
して厚さ：1.5mm、巾：3.6mm、ライナとリングフ
エースの面圧：2.9Kg／cm2に設定して、装着時応
力線と使用時応力線を示す。リングとして成立さ
せるには、第３図の斜線域の引張強度と弾性率の
材料でリングを構成する必要がある。本実施例で
はこの点を考慮に入れて、第１表に示す材料でリ
ングを構成した。
[Industrial Application Field] This invention relates to a piston ring for an internal combustion engine. [Prior Art] Conventionally, piston rings for internal combustion engines have been manufactured using the Automotive Engineering Zensho No. 4 published by Sankaido Co., Ltd.
As described on page 27 of Vol. Gasoline Engines, chrome-plated gray cast iron is often used. [Problems to be Solved by the Invention] However, in such conventional piston rings, since the ring body is made of iron-based material, there is a limit to the reduction in ring weight.
The ring could sometimes flop in the high-speed rotation range of the engine, resulting in a decrease in torque and an increase in oil consumption. In addition, due to the increase in cylinder maximum internal pressure due to turbocharging in recent years,
The chrome plating has a problem in that it may not have sufficient seizure resistance or wear resistance. [Means for solving the problems] This invention was made by focusing on such conventional problems, and the piston ring is made of C, Al 2
It is made of aluminum reinforced with ceramic long fibers such as O 3 and SiC, and the ceramic long fibers are arranged in a ring shape, and the ceramic long fibers partially protrude from the face surface of the ring, and the roughness is Rz1.2. ~
20, the aim is to solve the above problems. In the present invention, the aluminum-based alloy that is the base material may be ordinary pure aluminum or Al
-Cu series, Al-Mn series, Al-Si series, Al-Mg series, Al
-Mg-Si system, Al-Zn system, Al-Fe system, etc. can be used. Ceramic long fibers are made of carbon (C), alumina,
Syria, silicon carbide (β-SiC), etc. can be used. The length is preferably equal to the circumferential length of the ring, but may be 1 cm or more. The thickness is generally commercially available from several μm to several tens of μm in diameter,
Preferably, a thickness of around 10 μm is used. The piston ring of the present invention can be manufactured by placing ceramic long fibers in a mold, pouring a molten base metal into the mold, and casting under pressure, preferably by molten metal forging or pressure die casting. . Of course, it is also possible to form a plurality of piston rings at once into a cylindrical shape and cut them later. [Function] The piston ring of the present invention is lightweight because aluminum or an aluminum-based alloy is used as the base metal. Further, ceramic long fibers are arranged in a ring shape in the piston ring, that is, along the longitudinal direction of the face surface, and the ceramic long fibers partially protrude from the face surface of the ring, and the roughness is set to Rz1.2 to 20. As a result, engine oil accumulates in the minute recesses on the face surface, further improving wear resistance.Furthermore, since the end surfaces of the ceramic long fibers do not protrude into the face surface, wear on the inner surface of the cylinder can be kept to a minimum. I can do it. [Example] The present invention will be described below based on the drawings. FIG. 1 is a diagram showing an embodiment of the present invention. First, to explain the structure, 1 is a ring body, 2 is aluminum which is a base metal, and 3 is a ceramic long fiber. The ceramic long fibers 3 were oriented in the circumferential direction of the ring and dispersed in the aluminum 2. The details of the cross section of the ring are as shown in the schematic diagram shown in FIG. 2, and the ceramic long fibers 3 partially protrude from the face 4. Ceramic long fibers include carbon fiber (C; Example 1), mixed fiber of alumina and silica ( Al2O3 : 85% by weight, SiO2 : 15% by weight; Example 2), as shown in Table 1. 3 of silicon carbide (β-SiC; Example 3)
Created different types of piston rings. Note that stress acts on the piston ring when the ring is attached to the piston, and stress acts on the piston ring during use when it is inserted into the cylinder liner. Figure 3 shows cylinder liner diameter φ83.
A piston ring for a 4-cylinder gasoline engine with a thickness of 1.5 mm, a width of 3.6 mm, and a surface pressure of 2.9 Kg/cm 2 between the liner and ring face, and shows the stress lines when installed and during use. . In order to form a ring, it is necessary to construct the ring with a material having a tensile strength and an elastic modulus in the shaded area in FIG. In this example, taking this point into consideration, the ring was constructed using the materials shown in Table 1.
【表】 １【table】 1
Claims (1)
ミツク長繊維をリング状に配し、かつリングのフ
エース面はセラミツク長繊維が部分的に突出して
おり、あらさがRz1.2〜20であることを特徴とす
るピストンリング。1. Ceramic long fibers are arranged in a ring shape in a base material made of aluminum alloy, and the ceramic long fibers partially protrude from the face of the ring, and the roughness is Rz1.2 to 20. piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26227484A JPS61140673A (en) | 1984-12-12 | 1984-12-12 | Piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26227484A JPS61140673A (en) | 1984-12-12 | 1984-12-12 | Piston ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61140673A JPS61140673A (en) | 1986-06-27 |
| JPH0510543B2 true JPH0510543B2 (en) | 1993-02-10 |
Family
ID=17373515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26227484A Granted JPS61140673A (en) | 1984-12-12 | 1984-12-12 | Piston ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61140673A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02217666A (en) * | 1989-02-17 | 1990-08-30 | Honda Motor Co Ltd | Piston ring for internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5893842A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Fiber reinforced metallic composite member |
-
1984
- 1984-12-12 JP JP26227484A patent/JPS61140673A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5893842A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Fiber reinforced metallic composite member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61140673A (en) | 1986-06-27 |
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