JPH0530624U - Pressure ring for internal combustion engine - Google Patents
Pressure ring for internal combustion engineInfo
- Publication number
- JPH0530624U JPH0530624U JP8596191U JP8596191U JPH0530624U JP H0530624 U JPH0530624 U JP H0530624U JP 8596191 U JP8596191 U JP 8596191U JP 8596191 U JP8596191 U JP 8596191U JP H0530624 U JPH0530624 U JP H0530624U
- Authority
- JP
- Japan
- Prior art keywords
- ring
- pressure ring
- pressure
- gap
- notch
- 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
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 ２本の圧力リングを備えた内燃機関用圧力リ
ングにおいて、高速高負荷運転時にもハイブースト運転
時にもオイル消費が低減する圧力リングを提供すること
を目的とする。
【構成】 第２圧力リングの合口隙間をリングの両端が
突当らない程度に極力小さくするとともに、リングの下
側面の合口部の少くとも一方のリング端部に外周面から
内周面に通ずる切欠きを設け、リング下面での切欠を含
む合口隙間が第１圧力リングの合口隙間より大きくなる
ようにする。
(57) [Summary] (Modified) [Purpose] To provide a pressure ring for an internal combustion engine having two pressure rings, in which oil consumption is reduced during high speed and high load operation as well as during high boost operation. With the goal. [Structure] The joint gap of the second pressure ring is made as small as possible so that both ends of the ring do not abut, and at least one of the joints on the lower side surface of the ring is cut from the outer peripheral surface to the inner peripheral surface. A notch is provided so that the abutment gap including the notch on the lower surface of the ring is larger than the abutment gap of the first pressure ring.
Description
【０００１】[0001]
本考案は、内燃機関用圧力リングに関する。 The present invention relates to a pressure ring for an internal combustion engine.
【０００２】[0002]
内燃機関のピストンの上部には、燃焼室側から順に通常２本の圧力リングと１ 本のオイルリングがリング溝に嵌め込まれて設けられている。圧力リングはピス トンをシリンダに嵌合させた際、外周面がシリンダ内面に弾発的に圧接してガス 洩れを防止することができるように、合口部に隙間が設けられている。したがっ て、内燃機関の運転時、その隙間からブローバイガスが洩れたり、あるいはオイ ルが燃焼室へ行き、消費されたりする。その対策として、最近の内燃機関では、 第１、第２圧力リングの仕様は、第２リングの合口隙間Ｃ2 は、第１リングの合 口隙間Ｃ1 の上限値＋αとしており、これにより高速高負荷運転時、第２リング の合口よりブローバイガスを抜け易くし、第１、第２リング溝の間の第２ランド のランド圧力が低下し、オイル消費を低減する効果が得られる。しかし、エンジ ンブレーキ時の如きハイブースト運転時においては、第２リングの流通面積が大 きくなる分、オイルが合口隙間を通って燃焼室へ行ってしまい、オイル消費が増 大する欠点がある。At the upper part of the piston of the internal combustion engine, usually two pressure rings and one oil ring are installed in the ring groove in order from the combustion chamber side. The pressure ring has a gap at the abutment portion so that when the piston is fitted in the cylinder, the outer peripheral surface is elastically pressed against the inner surface of the cylinder to prevent gas leakage. Therefore, during operation of the internal combustion engine, blow-by gas leaks from the gap or oil goes to the combustion chamber and is consumed. Fast As a countermeasure, a recent internal combustion engine, first, the specifications of the second pressure ring, closed gap C 2 of the second ring, the upper limit of the interleaf port clearance C 1 of the first ring + alpha and to have, thereby During high load operation, the blow-by gas is easily released from the joint of the second ring, the land pressure of the second land between the first and second ring grooves is reduced, and the oil consumption is reduced. However, during high boost operation, such as engine braking, there is a drawback that the amount of oil flowing through the second ring increases to the combustion chamber due to the larger distribution area of the second ring, increasing oil consumption. .
【０００３】[0003]
本考案は、従来の上記構成の内燃機関用圧力リングの上記の欠点にかんがみ、 高速高負荷運転時には第２ランドのランド圧を下げ、ハイブースト運転時には合 口隙間流通面積を小さくしてオイルアップを防止することのできる圧力リングを 提供することを課題とする。 In view of the above-mentioned drawbacks of the conventional pressure ring for an internal combustion engine, the present invention reduces the land pressure of the second land during high-speed and high-load operation, and reduces the joint clearance flow area during high-boost operation to increase oil. It is an object to provide a pressure ring capable of preventing the above.
【０００４】[0004]
本考案は、上記の課題を解決するため、第２圧力リングの合口隙間をリングの 両端が突き当らない程度に極力小さくするとともに、リングの下側面の合口部の 少くとも一方のリング端部に外周面から内周面に通ずる切欠きを設け、該切欠き を含むリング下面の合口隙間が第１圧力リングの合口隙間より大きくなるように したことを特徴とする。 In order to solve the above problems, the present invention minimizes the abutment gap of the second pressure ring so that both ends of the ring do not abut, and at the same time, at least one ring end of the abutment part on the lower surface of the ring is provided. It is characterized in that a notch communicating from the outer peripheral surface to the inner peripheral surface is provided, and the abutment gap of the ring lower surface including the notch is larger than the abutment gap of the first pressure ring.
【０００５】[0005]
以上の如く構成したことにより、高速、高負荷運転時第２圧力リングがリング 溝下面に圧接している時は、ブローバイガスは第２圧力リングの上面、内側面と リング溝のこれらに相対する面の間を通り、リング溝の下側面と切欠き面の間を 内側より外側へ抜けるので、第２ランド圧力が上らず、第１リングに悪影響を及 ぼすことはない。 With the above configuration, when the second pressure ring is in pressure contact with the lower surface of the ring groove during high-speed, high-load operation, the blow-by gas faces the upper surface, the inner surface of the second pressure ring and the ring groove. Since it passes between the surfaces and passes between the lower surface of the ring groove and the notch surface from the inside to the outside, the second land pressure does not rise and the first ring is not adversely affected.
【０００６】 一方、ハイブースト運転時、第２圧力リングがピストンリング溝の上面に圧接 している時は、合口隙間は極めて小さくなっており、オイル上昇は効果的に防止 される。On the other hand, during the high boost operation, when the second pressure ring is in pressure contact with the upper surface of the piston ring groove, the abutment gap is extremely small, and the oil rise is effectively prevented.
【０００７】[0007]
以下に、本考案の実施例を、図面に基づいて詳細に説明する。図１は本考案の 実施例の第２圧力リングの合口部近傍を示す斜視図である。第２圧力リング１の 合口部２には、リングの両端が互いに突き当らない程度に極力小さい合口隙間３ が設けられているとともに、合口部２の下面側に、リングの両端部の隅に、リン グ１の外周面から内周面に通ずる切欠き４が設けられている。切欠き４の下面に おける隙間５は、図示しない第１圧力リングの合口隙間の上限値よりも若干広く なるように設定されている。このように構成したことにより、作用の項で説明し た作用が得られ、高速高負荷運転時にも、ハイブースト運転時にもオイル消費低 減効果が得られる。 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing the vicinity of an abutment portion of a second pressure ring according to an embodiment of the present invention. The abutment portion 2 of the second pressure ring 1 is provided with an abutment gap 3 which is as small as possible so that both ends of the ring do not abut each other, and at the bottom surface side of the abutment portion 2 and at the corners of both ends of the ring. A notch 4 is provided which extends from the outer peripheral surface of the ring 1 to the inner peripheral surface thereof. The gap 5 on the lower surface of the notch 4 is set to be slightly larger than the upper limit value of the joint gap of the first pressure ring (not shown). With this configuration, the operation described in the section of operation can be obtained, and the oil consumption reduction effect can be obtained during both high speed and high load operation and high boost operation.
【０００８】 図３は、高速高負荷運転時と、ハイブースト条件となるパターン運転時とにつ いて、第２圧力リングの合口隙間を単純に第１圧力リングの合口隙間の上限値よ り大きくした従来の圧力リングと本考案の圧力リングとを夫々装着して運転した 場合のオイル消費を、従来品を使用して高速高負荷運転した場合を１００とした 比率で示したグラフである。図より明らかなように、高速高負荷運転時では、本 考案の圧力リングを使用した場合も従来の圧力リングを使用した場合も同等レベ ルであるが、パターン運転時では本考案の圧力リングを使用した場合は、従来品 を使用した場合に比してオイル消費は顕著な低減が見られる。FIG. 3 shows that, at the time of high-speed and high-load operation and at the time of pattern operation that is a high boost condition, the joint gap of the second pressure ring is simply larger than the upper limit value of the joint gap of the first pressure ring. 6 is a graph showing the oil consumption when the conventional pressure ring and the pressure ring of the present invention were respectively installed and operated, with the ratio of 100 when the conventional product was used and high-speed and high-load operation was performed. As can be seen from the figure, at high speed and high load operation, the level is the same whether the pressure ring of the present invention is used or the conventional pressure ring is used. When used, a significant reduction in oil consumption is seen compared to when using conventional products.
【０００９】 第２圧力リングの合口部の下面側に形成される外周面から内周面迄通ずる切欠 きの断面形状は、図１に例示した四角形断面に限られるものではなく、どんな形 状でもよい。又、合口の両側でなく、図２に示す如く、合口部２の一方のリング 端の下側の隅にのみ切欠き４を設けることも可能である。その場合の下面側合口 隙間５は切欠きの端とこれに対向するリング端面との間の距離となる。The cross-sectional shape of the notch formed on the lower surface side of the abutment portion of the second pressure ring and extending from the outer peripheral surface to the inner peripheral surface is not limited to the rectangular cross section illustrated in FIG. 1, and any shape is possible. Good. It is also possible to provide notches 4 not only on both sides of the abutment but only on the lower corner of one ring end of the abutment 2 as shown in FIG. In this case, the gap 5 on the lower surface side is the distance between the end of the notch and the ring end surface facing the notch.
【００１０】[0010]
以上の如く、本考案によれば、高速高負荷運転時にも、ハイブースト運転時に もオイル消費を低減することができる。 As described above, according to the present invention, it is possible to reduce oil consumption during both high speed and high load operation and high boost operation.
【図１】本考案の実施例の第２圧力リングの合口部近傍
を示す斜視図である。FIG. 1 is a perspective view showing the vicinity of an abutment portion of a second pressure ring according to an embodiment of the present invention.
【図２】本考案の他の実施例の第２圧力リングの合口部
近傍を示す斜視図である。FIG. 2 is a perspective view showing the vicinity of an abutment portion of a second pressure ring according to another embodiment of the present invention.
【図３】本考案による第２圧力リングを使用した場合と
従来の第２圧力リングを使用した場合との高速高負荷運
転時とパターン運転時のオイル消費率を比較して示すグ
ラフである。FIG. 3 is a graph showing a comparison of oil consumption rates during high-speed high-load operation and pattern operation when a second pressure ring according to the present invention is used and when a conventional second pressure ring is used.
１ 第２圧力リング ２ 合口部 ３ 合口隙間 ４ 切欠き ５ リング下面における合口隙間 1 2nd pressure ring 2 Abutment part 3 Abutment gap 4 Notch 5 Abutment gap on the lower surface of the ring
Claims (1)
ング及び第２圧力リングが設けられて成る内燃機関用圧
力リングにおいて、上記の第２圧力リングの合口隙間を
リングの両端が突き当らない程度に極力小さくするとと
もに、リングの下側面の合口部の少くとも一方のリング
端部に外周面から内周面に通ずる切欠きを設け、該切欠
きを含むリング下面の合口隙間が第１圧力リングの合口
隙間より大きくなるようにしたことを特徴とする内燃機
関用圧力リング。1. A pressure ring for an internal combustion engine, comprising a piston having a first pressure ring and a second pressure ring provided in order from the combustion chamber side, and both ends of the ring do not abut the abutment gap of the second pressure ring. In addition to making it as small as possible, at least one ring end of the lower surface of the ring has a notch communicating from the outer peripheral surface to the inner peripheral surface, and the notch gap on the lower surface of the ring including the notch is the first pressure. A pressure ring for an internal combustion engine, wherein the pressure ring is larger than the gap of the rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8596191U JPH0530624U (en) | 1991-09-26 | 1991-09-26 | Pressure ring for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8596191U JPH0530624U (en) | 1991-09-26 | 1991-09-26 | Pressure ring for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0530624U true JPH0530624U (en) | 1993-04-23 |
Family
ID=13873343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8596191U Pending JPH0530624U (en) | 1991-09-26 | 1991-09-26 | Pressure ring for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0530624U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151013A (en) * | 2008-12-25 | 2010-07-08 | Teikoku Piston Ring Co Ltd | Piston device for internal combustion engine |
| JP2014222039A (en) * | 2013-05-13 | 2014-11-27 | 株式会社クボタ | Gas seal device for combustion chamber of engine |
| JP2016527460A (en) * | 2013-08-07 | 2016-09-08 | フェデラル−モーグル コーポレイション | piston ring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604740B2 (en) * | 1977-10-27 | 1985-02-06 | 株式会社豊田中央研究所 | rotary cutting device |
| JPH03213643A (en) * | 1990-01-19 | 1991-09-19 | Nippon Piston Ring Co Ltd | Second pressure ring |
-
1991
- 1991-09-26 JP JP8596191U patent/JPH0530624U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604740B2 (en) * | 1977-10-27 | 1985-02-06 | 株式会社豊田中央研究所 | rotary cutting device |
| JPH03213643A (en) * | 1990-01-19 | 1991-09-19 | Nippon Piston Ring Co Ltd | Second pressure ring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151013A (en) * | 2008-12-25 | 2010-07-08 | Teikoku Piston Ring Co Ltd | Piston device for internal combustion engine |
| EP2206909A1 (en) | 2008-12-25 | 2010-07-14 | Teikoku Piston Ring Co., Ltd. | Piston device for internal combustion engines |
| JP2014222039A (en) * | 2013-05-13 | 2014-11-27 | 株式会社クボタ | Gas seal device for combustion chamber of engine |
| JP2016527460A (en) * | 2013-08-07 | 2016-09-08 | フェデラル−モーグル コーポレイション | piston ring |
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