JPH051620A - piston - Google Patents
pistonInfo
- Publication number
- JPH051620A JPH051620A JP15446691A JP15446691A JPH051620A JP H051620 A JPH051620 A JP H051620A JP 15446691 A JP15446691 A JP 15446691A JP 15446691 A JP15446691 A JP 15446691A JP H051620 A JPH051620 A JP H051620A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- skirt
- frictional resistance
- fixed
- thrust
- 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
Links
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 125000002560 nitrile group Chemical group 0.000 claims abstract description 5
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 14
- 150000002825 nitriles Chemical class 0.000 description 14
- 229920000570 polyether Polymers 0.000 description 14
- 239000000463 material Substances 0.000 description 9
- 229920000049 Carbon (fiber) Polymers 0.000 description 6
- 239000004917 carbon fiber Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004696 Poly ether ether ketone Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920002530 polyetherether ketone Polymers 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
(57)【要約】
【目的】 ピストンがシリンダに摺接して生じる摩擦抵
抗を低減化する。
【構成】 ピストンＡのスカート２の少なくともスラス
ト側表面及び反スラスト側表面に、主鎖にフェニレン基
を有し且つ側鎖にニトリル基を有する樹脂３を固着して
ある。
(57) [Abstract] [Purpose] To reduce the frictional resistance that occurs when a piston slides against a cylinder. A resin 3 having a phenylene group in the main chain and a nitrile group in the side chain is fixed to at least the thrust-side surface and the anti-thrust-side surface of the skirt 2 of the piston A.
Description
【０００１】[0001]
【産業上の利用分野】本発明は自動車用エンジン等に使
用されるピストンに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piston used in an automobile engine or the like.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】この種
のピストンのうち、とりわけ自動車用エンジンに使用さ
れるピストンは、シリンダとの摺接時に生じる摩擦抵抗
を低減し、摩擦抵抗に起因する動力損失を低減化するた
め、様々な工夫が施されている。例えば、特開平２−２
７１０５９号公報に開示されたピストンは、そのスカー
ト表面に高弾性率の繊維で補強されたスルホン基含有樹
脂を固着して摩擦抵抗の低減化を図っているが、未だ十
分に摩擦抵抗を低減するこができなかった。そのため、
より一層摩擦抵抗を低減化したピストンの提供が望まれ
ていた。2. Description of the Related Art Among pistons of this kind, particularly pistons used in automobile engines, reduce frictional resistance generated during sliding contact with a cylinder and reduce the power generated by the frictional resistance. Various measures have been taken to reduce loss. For example, Japanese Patent Laid-Open No. 2-2
In the piston disclosed in Japanese Patent No. 71059, a sulfo group-containing resin reinforced with fibers having a high elastic modulus is fixed to the surface of the skirt to reduce the frictional resistance, but the frictional resistance is still sufficiently reduced. I couldn't do this. for that reason,
It has been desired to provide a piston with further reduced frictional resistance.
【０００３】[0003]
【課題を解決するための手段】本発明は上記要望に応え
るために案出されたもので、ピストンのスカートの少な
くともスラスト側表面及び反スラスト側表面に、主鎖に
フェニレン基を有し且つ側鎖にニトリル基を有する樹脂
を固着したことを特徴としている。又、前記樹脂に高弾
性率を有する繊維を所定量含有させてなることを特徴と
している。SUMMARY OF THE INVENTION The present invention has been devised in order to meet the above-mentioned needs, and has a phenylene group in the main chain and a side surface having at least a thrust-side surface and an anti-thrust-side surface of a piston skirt. It is characterized in that a resin having a nitrile group is fixed to the chain. Further, it is characterized in that the resin contains a predetermined amount of fibers having a high elastic modulus.
【０００４】[0004]
【実施例】以下本発明の実施例を図面に基づき詳述す
る。Embodiments of the present invention will be described in detail below with reference to the drawings.
【０００５】図１〜図３において１は金属製ピストン本
体（例えばＡＣ８Ａ）である。このピストン本体１のス
カート２の表面には、主鎖に耐熱性に優れたフェニレン
基を有し且つ側鎖に油との親和性を増すニトリル基を有
するポリエーテルニトリル（ＰＥＮ）３を固着してあ
る。このポリエーテルニトリル３は、全体を略筒状に形
成し、これをピストン本体１に嵌合して、接着剤（例え
ば、ポリアミド，エポキシまたはこれに類似の接着剤、
好ましくはＮ−メチル−２−ピロリドンポリアミドイミ
ド）で固着してある。そして、その後機械加工によりピ
ストンＡの全体形状を所定寸法に仕上げてある。1 to 3, reference numeral 1 is a metal piston body (for example, AC8A). On the surface of the skirt 2 of the piston body 1, a polyether nitrile (PEN) 3 having a phenylene group having excellent heat resistance in the main chain and a nitrile group having an increased affinity for oil in the side chain is fixed. There is. The polyether nitrile 3 is formed into a substantially tubular shape as a whole, and is fitted into the piston body 1 to form an adhesive (for example, polyamide, epoxy or an adhesive similar thereto,
It is preferably fixed with N-methyl-2-pyrrolidone polyamideimide). After that, the entire shape of the piston A is finished to a predetermined size by machining.
【０００６】図４はポリエーテルニトリル３と他の材料
（ピストンＡに適用可能な樹脂又は金属材料）との摩擦
係数の比較をしたものである。FIG. 4 shows a comparison of the friction coefficient between the polyether nitrile 3 and another material (resin or metal material applicable to the piston A).
【０００７】この比較試験は、比較材が摺接する材料を
シリンダ相当材料（ＦＣ２５）とし、摺接部の面圧：１
５０ｋｇ／ｃｍ2，摺動速度：１ｍ／ｓｅｃ，潤滑油：
エンジンオイル（７.５Ｗ−３０），摺接部材温度：８
０℃の条件の下で行われたものである。そして、比較材
料としては、ポリエーテルスルホン（ＰＥＳ）、ポリイ
ミド（ＰＩ）、ポリエーテルエーテルケトン（ＰＥＥ
Ｋ）、アルミニウム合金（ＡＣ８Ａ）を使用している。
尚、図中各材料の右側の値は各材料単体の場合の摩擦係
数を示し、その左側の値は各材料にカーボン繊維を３０
重量％含有させた場合の摩擦係数を示している。In this comparative test, the material with which the comparative material is in sliding contact is a cylinder-equivalent material (FC25), and the surface pressure of the sliding contact part is 1
50 kg / cm 2 , sliding speed: 1 m / sec, lubricating oil:
Engine oil (7.5W-30), sliding contact member temperature: 8
It was performed under the condition of 0 ° C. Then, as comparative materials, polyether sulfone (PES), polyimide (PI), polyether ether ketone (PEE)
K) and aluminum alloy (AC8A) are used.
In the figure, the value on the right side of each material shows the friction coefficient in the case of each material alone, and the value on the left side is 30 carbon fibers for each material.
The friction coefficient is shown when the alloy is contained in a weight percentage.
【０００８】この図４からわかるように、ポリエーテル
ニトリルは、それ自身単体の場合でも、ＰＥＥＫにカー
ボン繊維を含有させたものやＰＥＳにカーボン繊維を含
有させたものよりも小さな摩擦係数である。従って、図
１〜図３に示すように、ポリエーテルニトリル３をピス
トン本体１に固着した本実施例のピストンＡは、従来例
よりも摩擦抵抗を小さくすることができ、摩擦抵抗に起
因する動力損失を低減化することができる。As can be seen from FIG. 4, even when the polyether nitrile itself is used alone, it has a smaller friction coefficient than that of PEEK containing carbon fiber or PES containing carbon fiber. Therefore, as shown in FIGS. 1 to 3, the piston A of this embodiment in which the polyether nitrile 3 is fixed to the piston body 1 can have a smaller frictional resistance than the conventional example, and the power resulting from the frictional resistance can be reduced. The loss can be reduced.
【０００９】また、ポリエーテルニトリルにカーボン繊
維を３０重量％含有させたものを固着したピストンは、
更に顕著に摩擦抵抗を小さくでき、より一層摩擦抵抗に
起因する動力損失を低減化することができる。Further, a piston having a material in which 30% by weight of carbon fiber is contained in polyether nitrile is fixed,
Further, the frictional resistance can be remarkably reduced, and the power loss due to the frictional resistance can be further reduced.
【００１０】尚、ポリエーテルニトリルに含有させるカ
ーボン繊維の量は、３０重量％に限られず使用条件等に
応じて適宜調整する。また、カーボン繊維以外の高弾性
率を有する繊維（例えばガラス繊維等）をポリエーテル
ニトリルに所定量含有させてもよい。The amount of carbon fiber contained in the polyether nitrile is not limited to 30% by weight, and may be adjusted appropriately according to the conditions of use. Further, a predetermined amount of fibers having a high elastic modulus other than carbon fibers (for example, glass fibers) may be contained in the polyether nitrile.
【００１１】以上の実施例では、ポリエーテルニトリル
３をピストン本体１のスカート２の全周に亘り固着する
態様を示したが、ポリエーテルニトリル３は少なくとも
スラスト側表面及び反スラスト側表面に固着してあれば
よい。更に、ポリエーテルニトリル３をスカート２に固
着する方法は、前記したような接着剤による固着方法に
限られず、筒状のポリエーテルニトリル３をスカート２
の外周に嵌合した後、ポリエーテルニトリル３を加熱・
加圧してスカート２に固着させたり、スカート２の外周
にスプレーで吹き付けるようにしてもよい。又、螺合等
の機械的固定方法と接着等の固定方法とを組み合わせて
ポリエーテルニトリル３とスカート２とを固定するよう
にしてもよい。In the above embodiments, the polyether nitrile 3 is fixed to the entire circumference of the skirt 2 of the piston body 1. However, the polyether nitrile 3 is fixed to at least the thrust side surface and the anti-thrust side surface. If there is. Further, the method of fixing the polyether nitrile 3 to the skirt 2 is not limited to the method of fixing with the adhesive as described above, and the cylindrical polyether nitrile 3 is fixed to the skirt 2.
After fitting on the outer periphery of the
The pressure may be fixed to the skirt 2 or the outer circumference of the skirt 2 may be sprayed. Further, the polyether nitrile 3 and the skirt 2 may be fixed by combining a mechanical fixing method such as screwing and a fixing method such as adhesion.
【００１２】[0012]
【発明の効果】以上の説明から明らかなように本発明
は、スカートの少なくともスラスト側表面及び反スラス
ト側表面に、主鎖にフェニレン基を有し且つ側鎖にニト
リル基を有する樹脂を固着してあるため、ピストンの作
動に伴う摩擦抵抗を小さくすることができ、その摩擦抵
抗に起因する動力損失を低減化することができる。又、
前記樹脂に所定量の高弾性率を有する繊維を所定量含有
することにより、より一層ピストンの作動に伴う摩擦抵
抗を小さくすることができる。As is apparent from the above description, according to the present invention, a resin having a phenylene group in the main chain and a nitrile group in the side chain is fixed to at least the thrust side surface and the anti-thrust side surface of the skirt. Therefore, the frictional resistance due to the operation of the piston can be reduced, and the power loss due to the frictional resistance can be reduced. or,
By containing a predetermined amount of fibers having a high elastic modulus in the resin, it is possible to further reduce the frictional resistance associated with the operation of the piston.
【図１】本発明の一実施例を示すピストンの正面図。FIG. 1 is a front view of a piston showing an embodiment of the present invention.
【図２】図１のＢ−Ｂ線に沿う断面図。FIG. 2 is a sectional view taken along line BB of FIG.
【図３】図１のＣ−Ｃ線に沿う断面図。3 is a cross-sectional view taken along the line CC of FIG.
【図４】摩擦抵抗比較図。FIG. 4 is a friction resistance comparison diagram.
Ａ…ピストン、１…ピストン本体、２…スカート、３…
樹脂（ポリエーテルニトリル）。A ... Piston, 1 ... Piston body, 2 ... Skirt, 3 ...
Resin (polyether nitrile).
Claims (2)
び反スラスト側表面に、主鎖にフェニレン基を有し且つ
側鎖にニトリル基を有する樹脂を固着したことを特徴と
するピストン。1. A piston having a resin having a phenylene group in the main chain and a nitrile group in the side chain fixed to at least the thrust-side surface and the anti-thrust-side surface of the skirt.
量含有させてなることを特徴とする請求項１記載のピス
トン。2. The piston according to claim 1, wherein the resin contains a predetermined amount of fibers having a high elastic modulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15446691A JPH051620A (en) | 1991-06-26 | 1991-06-26 | piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15446691A JPH051620A (en) | 1991-06-26 | 1991-06-26 | piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH051620A true JPH051620A (en) | 1993-01-08 |
Family
ID=15584863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15446691A Pending JPH051620A (en) | 1991-06-26 | 1991-06-26 | piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051620A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006058871A1 (en) * | 2006-12-06 | 2008-06-12 | Ks Kolbenschmidt Gmbh | Piston for internal-combustion engine, has piston cover in which Platinum-Iron free varnish coating on polymer base is applied with solid lubricant |
| JP2008144638A (en) * | 2006-12-08 | 2008-06-26 | Across Corp | Piston |
| WO2010067728A1 (en) | 2008-12-10 | 2010-06-17 | トヨタ自動車株式会社 | Gas lubrication structure for piston, and stirling engine |
-
1991
- 1991-06-26 JP JP15446691A patent/JPH051620A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006058871A1 (en) * | 2006-12-06 | 2008-06-12 | Ks Kolbenschmidt Gmbh | Piston for internal-combustion engine, has piston cover in which Platinum-Iron free varnish coating on polymer base is applied with solid lubricant |
| JP2008144638A (en) * | 2006-12-08 | 2008-06-26 | Across Corp | Piston |
| WO2010067728A1 (en) | 2008-12-10 | 2010-06-17 | トヨタ自動車株式会社 | Gas lubrication structure for piston, and stirling engine |
| US8763514B2 (en) | 2008-12-10 | 2014-07-01 | Toyota Jidosha Kabushiki Kaisha | Gas lubrication structure for piston, and stirling engine |
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