JPH09317553A - Piston for internal combustion engine - Google Patents
Piston for internal combustion engineInfo
- Publication number
- JPH09317553A JPH09317553A JP8156196A JP15619696A JPH09317553A JP H09317553 A JPH09317553 A JP H09317553A JP 8156196 A JP8156196 A JP 8156196A JP 15619696 A JP15619696 A JP 15619696A JP H09317553 A JPH09317553 A JP H09317553A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- combustion engine
- internal combustion
- cylinder
- peripheral surface
- 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.)
- Withdrawn
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は内燃機関用のピスト
ンに関する。TECHNICAL FIELD The present invention relates to a piston for an internal combustion engine.
【０００２】[0002]
【従来の技術】図４（Ａ）は従来用いられている内燃機
関の要部を示すもので、内燃機関用ピストンのピストン
本体９１はシリンダ９５内を往復動して吸入、圧縮、爆
発、排気の各作用をし、爆発の圧力をピストンピン９２
により連結されたコネクティングロッド（以下、コンロ
ッドという）９３を介して図略のクランク軸に伝達する
ようになっている。ピストン本体９１のピストンヘッド
部９１ａには、ピストン本体９１とシリンダ９５内周面
間の気密保持等のため複数のピストンリング９４が設け
られている。2. Description of the Related Art FIG. 4A shows a main part of a conventionally used internal combustion engine. A piston body 91 of a piston for an internal combustion engine reciprocates in a cylinder 95 to suck, compress, explode and exhaust. The piston pin 92
It is adapted to be transmitted to a crank shaft (not shown) via a connecting rod (hereinafter referred to as a connecting rod) 93 connected by. The piston head 91a of the piston body 91 is provided with a plurality of piston rings 94 for maintaining airtightness between the piston body 91 and the inner peripheral surface of the cylinder 95.
【０００３】[0003]
【発明が解決しようとする課題】内燃機関においては、
作動時の騒音を可及的に小さくすることが要請されてい
る。ところでコンロッド９３はピストン本体９１の往復
動を上記クランク軸の回転に変換するため、図４（Ｂ）
に示すようにピストンピン９２を中心に揺動する。この
結果、ピストン本体９１はその往復動にともないコンロ
ッド９３の揺動方向に傾き、スカート部９１ｂがこれと
対向するシリンダ９５内周面の２つの側と交互に接触
し、打音やスリップ音が発生して内燃機関の騒音の原因
となっている。SUMMARY OF THE INVENTION In an internal combustion engine,
It is required to reduce the noise during operation as much as possible. By the way, since the connecting rod 93 converts the reciprocating motion of the piston main body 91 into the rotation of the crankshaft, the connecting rod 93 shown in FIG.
As shown in FIG. As a result, the piston body 91 tilts in the swinging direction of the connecting rod 93 as the piston body 91 reciprocates, and the skirt portion 91b alternately contacts two sides of the inner peripheral surface of the cylinder 95 facing the skirt portion 91b. It causes the noise of the internal combustion engine.
【０００４】本発明はかかる課題に鑑みなされたもの
で、打音やスリップ音を防止して内燃機関の騒音が低減
できる内燃機関用ピストンを提供することを目的とす
る。The present invention has been made in view of the above problems, and an object of the present invention is to provide a piston for an internal combustion engine capable of reducing the noise of the internal combustion engine by preventing hammering noise and slip noise.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明で
は、ピストン本体の外周面は、ピストンピンよりも上方
位置にあるピストンリングに加えて、上記ピストンピン
の下方位置で、かつコンロッドが揺動する方向の対称位
置を含む部位に、シリンダの内周面と弾接する傾斜防止
部材を設けることにより、上記ピストン本体の往復動に
応じてコンロッドが揺動しても、ピストンリングおよび
上記傾斜防止部材が常に上記ピストンピンの上方位置と
下方位置の両方で上記シリンダと当接するから上記ピス
トン本体が傾くのが防止される。また上記傾斜防止部材
により、上記シリンダの内周面を押圧する力が吸収され
て上記往復動がスムーズに行われる。According to a first aspect of the invention, in addition to the piston ring located above the piston pin on the outer peripheral surface of the piston body, the piston rod is located below the piston pin and the connecting rod swings. By providing an inclination prevention member that makes elastic contact with the inner peripheral surface of the cylinder at a portion including a symmetrical position in the moving direction, even if the connecting rod swings in response to the reciprocating movement of the piston body, the piston ring and the inclination prevention are provided. Since the member always contacts the cylinder both above and below the piston pin, the tilting of the piston body is prevented. Further, the inclination preventing member absorbs the force pressing the inner peripheral surface of the cylinder to smoothly perform the reciprocating motion.
【０００６】傾斜防止部材は、請求項２記載の発明のよ
うにピストン本体の外周面の全周に設けて上記シリンダ
の内周面と均等に弾接するようにしてもよいし、請求項
３記載の発明のように２か所に分割して設けて軽量化を
図ってもよい。The tilt preventing member may be provided on the entire outer peripheral surface of the piston main body so as to make uniform elastic contact with the inner peripheral surface of the cylinder, as in the invention described in claim 2. The invention may be divided into two parts to reduce the weight.
【０００７】傾斜防止部材はまた、請求項４記載の発明
にようにピストン本体の外周面の溝に弾性部材を介して
嵌設し、該弾性部材の弾性により上記シリンダの内周面
に弾接する構造としてもよいし、請求項５記載の発明の
ように傾斜防止部材自身を弾性体で構成してその弾性に
より上記シリンダの内周面と弾接する構造としてもよ
い。Further, the tilt preventing member is fitted in the groove of the outer peripheral surface of the piston body through the elastic member as in the invention described in claim 4, and elastically contacts the inner peripheral surface of the cylinder by the elasticity of the elastic member. The structure may be such that the tilt preventing member itself is made of an elastic body and elastically contacts the inner peripheral surface of the cylinder due to its elasticity.
【０００８】傾斜防止部材はまた、請求項６記載の発明
のようにシリンダの内周面との弾接面を上側が小径とな
るテーパ面に形成することにより、上記シリンダ内周面
のオイルをかき落とすことができる。In the tilt preventing member, the oil on the inner peripheral surface of the cylinder is removed by forming the elastic contact surface with the inner peripheral surface of the cylinder into a tapered surface having a small diameter on the upper side. Can be scraped off.
【０００９】[0009]
（第１実施形態）本発明の内燃機関用ピストンを適用し
た内燃機関の要部を図１（Ａ）に示す。内燃機関用ピス
トン１Ａは、内燃機関のシリンダブロックに形成された
シリンダ８内に上端が閉鎖した円筒状のピストン本体２
Ａが挿置してあり、シリンダ８内を往復動可能としてあ
る。ピストン本体２Ａにはピストンピンボス２１が形成
され、パイプ状のピストンピン４によりコンロッド５の
一端が連結してある。コンロッド５はその他端が図略の
クランク軸と接続され、ピストン本体２Ａの往復動を上
記クランク軸の回転運動に変換する。(First Embodiment) FIG. 1A shows a main part of an internal combustion engine to which a piston for an internal combustion engine of the present invention is applied. A piston 1A for an internal combustion engine includes a cylindrical piston body 2 having an upper end closed inside a cylinder 8 formed in a cylinder block of the internal combustion engine.
A is inserted and can reciprocate in the cylinder 8. A piston pin boss 21 is formed on the piston body 2A, and one end of a connecting rod 5 is connected by a pipe-shaped piston pin 4. The other end of the connecting rod 5 is connected to a crank shaft (not shown), and converts the reciprocating motion of the piston body 2A into the rotary motion of the crank shaft.
【００１０】ピストンピン４よりも上方位置のピストン
ヘッド部２ａの外周面には、３本のピストンリング３が
周方向に設けてあり、これらは上記燃焼室内の燃焼ガス
の漏れ防止用に上側に２本設けられたコンプレッション
リングと、シリンダ８内周面のオイルをかき落とし回収
をするために下側に１本設けられたオイルリングよりな
る。On the outer peripheral surface of the piston head portion 2a located above the piston pin 4, three piston rings 3 are provided in the circumferential direction, and these piston rings 3 are provided on the upper side to prevent leakage of combustion gas in the combustion chamber. Two compression rings are provided, and one oil ring is provided on the lower side for scraping and collecting oil on the inner peripheral surface of the cylinder 8.
【００１１】図１（Ｂ）は内燃機関用ピストン１Ａの水
平断面図で、ピストン本体２Ａには、ピストンピン４よ
りも下方位置のスカート部２ｂ（図１（Ａ））の外周面
に全周に溝２２が形成してあり、溝の底部に沿って波形
の弾性部材たる板ばね７Ａが、その面を溝２２の底部側
に向けて設けてある。溝２２にはまた板ばね７Ａの外側
に傾斜防止部材６Ａが嵌設してある。すなわち傾斜防止
部材６Ａは切り欠き６１を形成した鋳鉄製のリング状部
材で、外径がシリンダ８内径よりも若干大きくしてあ
り、シリンダ８内に挿置されたときに板ばね７Ａのばね
力と傾斜防止部材６Ａ自体のばね力とによりシリンダ８
内周面（図１（Ａ））と弾接するようになっている。な
お傾斜防止部材６Ａのピストン本体２Ａへの組付けは、
傾斜防止部材６Ａに切り欠き６１が形成されているので
容易に行われる。FIG. 1 (B) is a horizontal sectional view of a piston 1A for an internal combustion engine. The piston body 2A has a skirt portion 2b (FIG. 1 (A)) located below the piston pin 4 along the entire circumference. A groove 22 is formed in the groove 22, and a leaf spring 7A, which is a corrugated elastic member, is provided along the bottom of the groove with its surface facing the bottom of the groove 22. An inclination preventing member 6A is fitted in the groove 22 outside the leaf spring 7A. That is, the tilt prevention member 6A is a cast iron ring-shaped member in which the notch 61 is formed, the outer diameter of which is slightly larger than the inner diameter of the cylinder 8, and the spring force of the leaf spring 7A when inserted into the cylinder 8. And the spring force of the tilt prevention member 6A itself, the cylinder 8
It is designed to make elastic contact with the inner peripheral surface (Fig. 1 (A)). The assembly of the tilt prevention member 6A to the piston body 2A is as follows.
Since the notch 61 is formed in the inclination preventing member 6A, it is easily performed.
【００１２】図１（Ｃ）は傾斜防止部材６Ａの断面形状
で、傾斜防止部材６Ａはシリンダ８内周面との弾接面６
２をテーパ状としてあり、上側が小径となる向きに取り
付けられる。しかして弾接面６２の鋭角部６２１が上記
オイルリングとともにオイルを効率よくかき落とすから
オイル消費量が低減できる。FIG. 1C is a sectional view of the inclination preventing member 6A. The inclination preventing member 6A has an elastic contact surface 6 with the inner peripheral surface of the cylinder 8.
2 has a taper shape, and is attached so that the upper side has a small diameter. Therefore, the acute angle portion 621 of the elastic contact surface 62 efficiently scrapes off the oil together with the oil ring, so that the oil consumption amount can be reduced.
【００１３】上記内燃機関用ピストン１Ａの作動を説明
する。内燃機関用ピストン１Ａが上記燃焼室における爆
発の圧力によりシリンダ８内を往復動し、この往復動に
ともないコンロッド５がピストンピン４を中心として図
の左右方向に揺動する。このときピストン本体２Ａはコ
ンロッド５からピストンピン４を介して左右方向の力が
作用するが、ピストンピン４の上方位置にあるピストン
リング３に加えてピストンピン４の下方位置にある傾斜
防止部材６Ａがシリンダ８内周面と当接しているからピ
ストン本体２が傾くのが防止される。またコンロッド５
が傾斜防止部材６Ａを介してシリンダ８内周面を押圧す
る力は板ばね７Ａにより吸収されてスムーズにシリンダ
８内を往復動できる。The operation of the internal combustion engine piston 1A will be described. The piston 1A for the internal combustion engine reciprocates in the cylinder 8 due to the pressure of the explosion in the combustion chamber, and the reciprocating movement causes the connecting rod 5 to swing in the left-right direction around the piston pin 4. At this time, the piston body 2A receives a lateral force from the connecting rod 5 via the piston pin 4, but in addition to the piston ring 3 located above the piston pin 4, the tilt prevention member 6A located below the piston pin 4 Is in contact with the inner peripheral surface of the cylinder 8, so that the piston body 2 is prevented from tilting. Also connecting rod 5
The force for pressing the inner peripheral surface of the cylinder 8 via the inclination preventing member 6A is absorbed by the leaf spring 7A and can smoothly reciprocate in the cylinder 8.
【００１４】なお上記傾斜防止部材は、シリンダ内周面
との弾接面の全面がシリンダ内周面と当接する構造とし
てもよい。The inclination preventing member may have a structure in which the entire elastic contact surface with the cylinder inner peripheral surface is in contact with the cylinder inner peripheral surface.
【００１５】（第２実施形態）図２（Ａ）に本発明の別
の内燃機関用ピストンを適用した内燃機関の要部を示
す。図中、図１と同一番号を付したものは実質的に同じ
作用をするので第１実施形態との相違点を中心に説明す
る。傾斜防止部材６Ｂは、ピストン本体２Ｂのスカート
部２ｂに、周方向に沿って２か所に分割して設けてあ
り、軽量化を図っている。(Second Embodiment) FIG. 2A shows a main part of an internal combustion engine to which another internal combustion engine piston of the present invention is applied. In the figure, those denoted by the same reference numerals as those in FIG. 1 have substantially the same operation, and therefore differences from the first embodiment will be mainly described. The inclination preventing member 6B is provided on the skirt portion 2b of the piston body 2B at two locations along the circumferential direction so as to reduce the weight.
【００１６】図２（Ｂ）は内燃機関用ピストン１Ｂの水
平断面図で、ピストン本体２Ｂのスカート部２ｂ（図２
（Ａ））の外周面には、ピストンピン４の中心軸Ｃ２と
直交するピストン本体２Ｂの径方向に対称となる２点Ｐ
１，Ｐ２のおのおのを中心として周方向に溝２３が形成
してあり、溝の底部に沿って波形の弾性部材たる板ばね
７Ｂが、その面を溝２３の底部側に向けて設けてある。
溝２２にはまた板ばね７Ｂの外側に傾斜防止部材６Ｂが
嵌設してあり、シリンダ８内に挿置されたときに板ばね
７Ｂのばね力によりシリンダ８内周面と弾接するように
なっている。かかる構成によっても、第１実施形態と同
様にピストン本体２Ｂは傾くことが防止され、かつシリ
ンダ８内をスムーズに往復動する。FIG. 2B is a horizontal sectional view of the piston 1B for an internal combustion engine, showing a skirt portion 2b (FIG. 2) of the piston body 2B.
On the outer peripheral surface of (A), there are two points P which are symmetrical in the radial direction of the piston body 2B orthogonal to the central axis C2 of the piston pin 4.
A groove 23 is formed in the circumferential direction centering on each of P1 and P2, and a leaf spring 7B, which is a corrugated elastic member, is provided along the bottom of the groove with its surface facing the bottom of the groove 23.
An inclination preventing member 6B is fitted in the groove 22 outside the plate spring 7B so that when it is inserted into the cylinder 8, the spring force of the plate spring 7B makes elastic contact with the inner peripheral surface of the cylinder 8. ing. With this configuration as well, the piston body 2B is prevented from tilting and reciprocates smoothly in the cylinder 8 as in the first embodiment.
【００１７】なお第１、第２実施形態では傾斜防止部材
と溝の間に介設する弾性部材は板ばねとしたが、コイル
ばね等の他の種類の弾性部材が用いられ得る。In the first and second embodiments, the elastic member provided between the inclination preventing member and the groove is a leaf spring, but other kinds of elastic members such as a coil spring may be used.
【００１８】（第３実施形態）図３に本発明のさらに別
の内燃機関用ピストンを示す。内燃機関用ピストン１Ｃ
は、傾斜防止部材６Ｃ以外の構成が上記第２実施形態の
ものと同じである。傾斜防止部材６Ｃは弾性体たる耐熱
性のゴム製でなり、ピストン本体２Ｂの外周面に形成さ
れた溝２３の形状に合わせて円弧状に成形されて溝２３
に嵌設してある。また傾斜防止部材６Ｃ自身の弾性によ
りシリンダ８内周面と弾接するので上記第１、第２実施
形態のような弾性部材が省略してある。かかる構成によ
れば、第２実施形態と同様にピストン本体２Ｂは傾くの
が防止され、かつシリンダ８内をスムーズに往復動する
とともに、部品の数が減って簡素化する。(Third Embodiment) FIG. 3 shows still another piston for an internal combustion engine of the present invention. Internal combustion engine piston 1C
Is the same as that of the second embodiment except for the inclination preventing member 6C. The tilt prevention member 6C is made of heat-resistant rubber that is an elastic body, and is formed in an arc shape in accordance with the shape of the groove 23 formed on the outer peripheral surface of the piston body 2B.
It is fitted in. Further, since the inclination preventing member 6C itself elastically contacts the inner peripheral surface of the cylinder 8, the elastic member as in the first and second embodiments is omitted. According to this structure, the piston body 2B is prevented from inclining similarly to the second embodiment, and smoothly reciprocates in the cylinder 8, and the number of parts is reduced and the structure is simplified.
【００１９】なお弾性体で構成した上記傾斜防止部材は
第１実施形態のごとくリング状に成形して、これをピス
トン本体の外周面の全周に形成した溝に嵌設してもよ
い。また傾斜防止部材のシリンダ内周面との弾接面を第
１実施形態のごとくテーパ面としてオイルのかき落とし
作用が得られるようにしてもよいし、弾接面の全面がシ
リンダ内周面と当接する構造としてもよい。The inclination preventing member made of an elastic body may be formed in a ring shape as in the first embodiment, and may be fitted into a groove formed on the entire outer peripheral surface of the piston body. Further, the elastic contact surface of the tilt prevention member with the inner peripheral surface of the cylinder may be tapered as in the first embodiment so as to obtain the effect of scraping off the oil, or the entire elastic contact surface contacts the inner peripheral surface of the cylinder. The structure may be in contact with each other.
【図１】（Ａ）は本発明の第１の内燃機関用ピストンを
適用した内燃機関の要部の縦断面図であり、（Ｂ）は
（Ａ）のＩＢ−ＩＢ線に沿う上記内燃機関用ピストンの
水平断面図であり、（Ｃ）は（Ｂ）のＩＣ−ＩＣ線に沿
う上記内燃機関用ピストンの要部の縦断面図である。FIG. 1A is a vertical cross-sectional view of a main part of an internal combustion engine to which a first piston for an internal combustion engine of the present invention is applied, and FIG. 1B is the internal combustion engine taken along line IB-IB in FIG. It is a horizontal cross-sectional view of the piston for, and (C) is a longitudinal cross-sectional view of the main part of the piston for an internal combustion engine taken along the line IC-IC in (B).
【図２】（Ａ）は本発明の第２の内燃機関用ピストンを
適用した内燃機関の要部の縦断面図であり、（Ｂ）は
（Ａ）のIIＢ−IIＢ線に沿う上記内燃機関用ピストンの
水平断面図である。FIG. 2A is a vertical cross-sectional view of a main part of an internal combustion engine to which a second piston for internal combustion engine of the present invention is applied, and FIG. 2B is the internal combustion engine taken along line IIB-IIB of FIG. It is a horizontal sectional view of a piston for use.
【図３】本発明の第３の内燃機関用ピストンの要部の水
平断面図である。FIG. 3 is a horizontal cross-sectional view of a main part of a third piston for an internal combustion engine of the present invention.
【図４】（Ａ），（Ｂ）はそれぞれ従来の内燃機関用ピ
ストンを適用した内燃機関の要部の縦断面図である。4 (A) and 4 (B) are vertical cross-sectional views of a main part of an internal combustion engine to which a conventional piston for an internal combustion engine is applied.
１Ａ，１Ｂ，１Ｃ 内燃機関用ピストン ２Ａ，２Ｂ ピストン本体 ２２，２３ 溝 ３ ピストンリング ４ ピストンピン ５ コネクティングロッド ６Ａ，６Ｂ，６Ｃ 傾斜防止部材 ７Ａ，７Ｂ 板ばね（弾性部材） ８ シリンダ Ｃ１，Ｃ２ 中心軸 1A, 1B, 1C Pistons for internal combustion engine 2A, 2B Piston body 22,23 Groove 3 Piston ring 4 Piston pin 5 Connecting rod 6A, 6B, 6C Tilt prevention member 7A, 7B Leaf spring (elastic member) 8 Cylinder C1, C2 Center axis
Claims (6)
よりコネクティングロッドが連結されて上記シリンダ内
を往復動するピストン本体の、上記ピストンピンよりも
上方位置の外周面にピストンリングを設けた内燃機関用
ピストンにおいて、上記ピストン本体の外周面には、上
記ピストンピンの下方位置で、かつ上記ピストンピンの
中心軸と直交する上記ピストン本体の径方向対称位置を
含む部位に、上記シリンダの内周面と弾接して上記ピス
トン本体の傾斜を防止する傾斜防止部材を上記ピストン
本体の周方向に設けたことを特徴とする内燃機関用ピス
トン。1. An internal combustion engine in which a piston ring is provided on an outer peripheral surface of a piston main body which is inserted in a cylinder and reciprocates in the cylinder by connecting a connecting rod by a piston pin and which reciprocates in the cylinder. In the piston for use, on the outer peripheral surface of the piston main body, the inner peripheral surface of the cylinder is located at a position below the piston pin and including a radial symmetrical position of the piston main body orthogonal to the central axis of the piston pin. A piston for an internal combustion engine, comprising: an inclination preventing member that is elastically contacted with the piston body to prevent inclination of the piston body in a circumferential direction of the piston body.
いて、上記傾斜防止部材を、上記ピストン本体の外周面
の全周に設けた内燃機関用ピストン。2. A piston for an internal combustion engine according to claim 1, wherein the inclination preventing member is provided on the entire circumference of the outer peripheral surface of the piston body.
いて、上記傾斜防止部材を、上記径方向対称位置となる
２か所に分割して設けた内燃機関用ピストン。3. A piston for an internal combustion engine according to claim 1, wherein the inclination preventing member is divided and provided at two positions which are symmetrical in the radial direction.
関用ピストンにおいて、上記傾斜防止部材はこれを、上
記ピストン本体の外周面に溝を形成して該溝内に弾性部
材を介して嵌設した内燃機関用ピストン。4. The piston for an internal combustion engine according to any one of claims 1 to 3, wherein the inclination preventing member has a groove formed on an outer peripheral surface of the piston body and is fitted in the groove via an elastic member. Installed piston for internal combustion engine.
関用ピストンにおいて、上記傾斜防止部材はこれを、弾
性体で構成するとともに、上記ピストン本体の外周面に
溝を形成して該溝に嵌設した内燃機関用ピストン。5. The piston for an internal combustion engine according to claim 1, wherein the tilt prevention member is formed of an elastic body, and a groove is formed on the outer peripheral surface of the piston body to form the groove in the groove. Fitted piston for internal combustion engine.
関用ピストンにおいて、上記傾斜防止部材は、上記シリ
ンダの内周面との弾設面を上側が小径となるテーパ面に
形成した内燃機関用ピストン。6. The internal combustion engine piston according to claim 1, wherein the inclination preventing member has an elastic surface formed with the inner peripheral surface of the cylinder formed into a taper surface having a small diameter on the upper side. For piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8156196A JPH09317553A (en) | 1996-05-27 | 1996-05-27 | Piston for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8156196A JPH09317553A (en) | 1996-05-27 | 1996-05-27 | Piston for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09317553A true JPH09317553A (en) | 1997-12-09 |
Family
ID=15622474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8156196A Withdrawn JPH09317553A (en) | 1996-05-27 | 1996-05-27 | Piston for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09317553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120085642A (en) * | 2011-01-24 | 2012-08-01 | 베르트질레 슈바이츠 악티엔게젤샤프트 | Piston for a reciprocating internal combustion engine |
-
1996
- 1996-05-27 JP JP8156196A patent/JPH09317553A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120085642A (en) * | 2011-01-24 | 2012-08-01 | 베르트질레 슈바이츠 악티엔게젤샤프트 | Piston for a reciprocating internal combustion engine |
| JP2012154331A (en) * | 2011-01-24 | 2012-08-16 | Waertsilae Schweiz Ag | Piston for reciprocating internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030805 |