JPH06346789A - Sticking monitoring device for piston ring for reciprocating engine - Google Patents
Sticking monitoring device for piston ring for reciprocating engineInfo
- Publication number
- JPH06346789A JPH06346789A JP16382993A JP16382993A JPH06346789A JP H06346789 A JPH06346789 A JP H06346789A JP 16382993 A JP16382993 A JP 16382993A JP 16382993 A JP16382993 A JP 16382993A JP H06346789 A JPH06346789 A JP H06346789A
- Authority
- JP
- Japan
- Prior art keywords
- piston ring
- cylinder liner
- temperature
- piston
- reciprocating engine
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Of Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は往復動エンジンで用いら
れるピストンリングの固着監視装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sticking monitor device for a piston ring used in a reciprocating engine.
【０００２】[0002]
【従来の技術】シリンダ内のピストンの往復動を、連接
棒を経てクランク軸の回転運動に変えて動力を得る型式
の往復動エンジンは、舶用あるいは自動車用等のエンジ
ンとして広く普及している。2. Description of the Related Art A reciprocating engine of the type in which reciprocating motion of a piston in a cylinder is converted into rotational motion of a crankshaft via a connecting rod to obtain power is widely used as an engine for ships or automobiles.
【０００３】上記往復動エンジンでは、通常、図４に示
す如く、シリンダライナ１とピストン２との間の気密を
保ったり、シリンダライナ１の内壁の潤滑油を掻き落し
て燃焼室に入らないようにしたりするために、ピストン
２の外周部に設けた溝３内に、ピストンリング４を嵌設
した構成としてある。５はシリンダカバーを示す。In the reciprocating engine, normally, as shown in FIG. 4, the airtightness between the cylinder liner 1 and the piston 2 is maintained, and the lubricating oil on the inner wall of the cylinder liner 1 is not scraped off to enter the combustion chamber. For this reason, the piston ring 4 is fitted in the groove 3 provided on the outer peripheral portion of the piston 2. Reference numeral 5 indicates a cylinder cover.
【０００４】上記構成の往復動エンジンにおいては、シ
リンダライナ１とピストンリング４との間に異常摩耗に
よる焼き付きが発生する問題があるので、この焼き付き
を監視するための一手段として、従来では、シリンダラ
イナ１の壁面温度を計測する方式が採用されている。In the reciprocating engine having the above-described structure, there is a problem that seizure occurs between the cylinder liner 1 and the piston ring 4 due to abnormal wear. A method of measuring the wall surface temperature of the liner 1 is adopted.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記温度計
測方式の場合、シリンダライナ１の壁面温度の絶対値を
検出するのみであるため、実際に温度が上がらないと、
すなわち、軽微な焼き付きが発生しないと検知すること
ができず、又、シリンダライナ１の壁面温度は負荷条件
等の運転環境によっても変化することから、異常の有無
は熟練者の判断に頼っているのが実情である。However, in the case of the above temperature measuring method, since only the absolute value of the wall surface temperature of the cylinder liner 1 is detected, if the temperature does not actually rise,
That is, it cannot be detected that slight seizure does not occur, and the wall temperature of the cylinder liner 1 also changes depending on the operating environment such as load conditions. Therefore, the presence or absence of abnormality depends on the judgment of a skilled person. Is the reality.
【０００６】そこで、本発明は、ピストンリングがシリ
ンダライナに焼き付く予兆として、ピストンリングがピ
ストン溝に固着することに着目し、この固着を監視する
ことができるような往復動エンジン用ピストンリングの
固着監視装置を提供し、以って、シリンダライナへのピ
ストンリングの焼き付き事故を未然に防止することがで
きるようにしようとするものである。Therefore, the present invention focuses on the fact that the piston ring sticks to the piston groove as a sign that the piston ring will seize on the cylinder liner, and the sticking of the piston ring for a reciprocating engine that can monitor this sticking. It is an object of the present invention to provide a monitoring device, and thereby prevent the seizure accident of the piston ring on the cylinder liner.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記課題を解
決するために、外周部の溝にピストンリングを嵌設した
ピストンを往復動可能に収容するシリンダライナの周方
向複数個所に、該シリンダライナの壁面温度を検出する
ための温度計測端をそれぞれ取り付け、且つ上記シリン
ダライナの壁面温度計測結果に基づく温度分布からピス
トンリングの周方向変位を検出するようにした演算器を
備えた構成とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a plurality of circumferential circumferential positions of a cylinder liner which accommodates a piston having a piston ring fitted in a groove of an outer peripheral portion so as to reciprocate. A structure provided with a temperature measuring end for detecting the wall surface temperature of the cylinder liner, and an arithmetic unit for detecting the circumferential displacement of the piston ring from the temperature distribution based on the wall surface temperature measurement result of the cylinder liner. To do.
【０００８】[0008]
【作用】温度計測端を通じて計測されたシリンダライナ
の周方向複数個所の壁面温度の推移に基づき演算器によ
り温度分布が求められる。上記温度分布から最高温部の
移動がピストンリングの合い口の移動に変換され、ピス
トンリングの固着の有無が判定される。The temperature distribution is obtained by the calculator based on the transition of the wall surface temperature at a plurality of circumferential positions of the cylinder liner measured through the temperature measuring end. From the above temperature distribution, the movement of the highest temperature part is converted into the movement of the mating end of the piston ring, and it is determined whether or not the piston ring is stuck.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面を参照して説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１は本発明の一実施例を示すもので、図
４に示した往復動エンジンと同様に、外周部の溝３にピ
ストンリング４を嵌設したピストン２をシリンダライナ
１内に往復動可能に収容してある構成において、上記シ
リンダライナ１の周方向複数個所（実施例では対向する
２個所）に、温度計測端６をそれぞれ取り付け、且つ該
各温度計測端６を、シリンダライナ１の壁面温度計測結
果に基づき温度分布を求めてピストンリング４の周方向
変位を検出するようにした演算器７に接続し、上記ピス
トンリング４の周方向変位によってピストンリング４の
固着を監視できるようにする。FIG. 1 shows an embodiment of the present invention. As in the reciprocating engine shown in FIG. 4, a piston 2 having a piston ring 4 fitted in a groove 3 on the outer peripheral portion is provided in a cylinder liner 1. In a configuration in which the cylinder liner 1 is reciprocally accommodated, temperature measuring ends 6 are attached to a plurality of circumferential positions (two facing each other in the embodiment) of the cylinder liner 1, and the temperature measuring ends 6 are connected to the cylinder liner. 1 is connected to a computing unit 7 which detects the temperature distribution based on the wall surface temperature measurement result and detects the circumferential displacement of the piston ring 4, and the fixation of the piston ring 4 can be monitored by the circumferential displacement of the piston ring 4. To do so.
【００１１】次に、本発明によるピストンリング４の固
着監視の原理を説明する。Next, the principle of monitoring sticking of the piston ring 4 according to the present invention will be described.
【００１２】上記ピストンリング４には、図２に示す如
く、その組立構造上、必ず合い口（切り口）４ａが存在
し、この合い口４ａの部分より燃焼ガスが漏れるため、
これに対応するシリンダライナ１の壁面部分は温度が高
くなる。一方、ピストンリング４はピストン２の溝３及
びシリンダライナ１に対して、通常、周方向変位を起す
ことが知られている。したがって、シリンダライナ１の
壁面の最高温部の位置がわかれば、ピストンリング４の
合い口４ａの位置を知ることができ、この合い口４ａの
位置が周方向で止まればピストンリング４の固着を検出
することができる。As shown in FIG. 2, the piston ring 4 always has a gap (cut) 4a due to its assembly structure, and the combustion gas leaks from this gap 4a.
The temperature of the wall portion of the cylinder liner 1 corresponding to this becomes high. On the other hand, it is known that the piston ring 4 normally causes circumferential displacement with respect to the groove 3 of the piston 2 and the cylinder liner 1. Therefore, if the position of the highest temperature portion of the wall surface of the cylinder liner 1 is known, the position of the mating port 4a of the piston ring 4 can be known, and if the position of this mating port 4a stops in the circumferential direction, the piston ring 4 will be fixed. Can be detected.
【００１３】上記構成に基づくピストン２の具体的な固
着監視要領を説明すると、たとえば、図３の（イ）に示
す如く、シリンダライナ１とピストン２の組み合わせ
を、直交するＸ軸とＹ軸とからなる座標上に置き、Ｙ軸
上のシリンダライナ１の内壁部Ａ点とＢ点に温度計測端
６がある場合において、Ａ点とＢ点とが同一温度である
ときは、ピストンリング４の合い口４ａがＸ軸上のＣ点
又はＤ点にあることがわかる。一方、Ａ点の方がＢ点よ
りも温度が高いときには、ピストンリング４の合い口４
ａがＡ点−Ｃ点間の第Ｉ象限又はＡ点−Ｄ点間の第IV象
限にあることがわかる。したがって、Ａ点とＢ点の温度
計測によって図３の（ロ）に示す如き温度推移が得ら
れ、この計測により演算器７でＡ点−Ｂ点間の温度分布
が求められるので、最高温度点の移動状況からピストン
リング４の合い口４ａの移動状況がとらえられ、ピスト
ンリング４の固着の有無が判定される。A concrete procedure for monitoring the fixation of the piston 2 based on the above construction will be explained. For example, as shown in FIG. 3A, the combination of the cylinder liner 1 and the piston 2 is made into an X-axis and a Y-axis which are orthogonal to each other. When the temperature measuring ends 6 are located at the points A and B on the inner wall of the cylinder liner 1 on the Y-axis and the points A and B have the same temperature, the piston ring 4 It can be seen that the abutment 4a is at point C or point D on the X axis. On the other hand, when the temperature at the point A is higher than that at the point B, the mating port 4 of the piston ring 4
It can be seen that a is in the quadrant I between points A and C or the quadrant IV between points A and D. Therefore, by measuring the temperature at the points A and B, the temperature transition as shown in (B) of FIG. 3 is obtained, and the temperature distribution between the points A and B is obtained by the computing unit 7 by this measurement. The moving state of the abutment 4a of the piston ring 4 is grasped from the moving state of No. 4 and the presence or absence of the sticking of the piston ring 4 is determined.
【００１４】上記においては、２点計測であるため、ピ
ストンリング４の合い口４ａの位置は、第Ｉ，IV象限間
及び第II，III 象限の間では判別できないが３点以上の
計測であれば、全周にわたって位置を特定することがで
きる。すなわち、温度計測点が１個所であれば、焼き付
きにより温度が上がったのかピストンリング４の合い口
４ａが通過したことにより温度が上がったのかは短期間
では判別できないので、焼き付きが起った場合は重大な
事故になる。その点、温度計測点が２個所であれば、１
８０°の位相ずれは判別できないものの、最高温部の通
過により溝３及びシリンダライナ１に対するピストンリ
ング４の周方向変位の有無を判別することができ、更
に、温度計測点が３個所以上であれば、３６０°にわた
って合い口４ａの位置を特定することができる。In the above, since the measurement is made at two points, the position of the abutment 4a of the piston ring 4 cannot be discriminated between the I and IV quadrants and between the II and III quadrants, but it should be measured at three or more points. For example, the position can be specified over the entire circumference. That is, if there is one temperature measurement point, it cannot be determined in a short period of time whether the temperature has risen due to seizure or the temperature has risen due to the passage of the mating port 4a of the piston ring 4, so if seizure has occurred. Will be a serious accident. If there are two temperature measurement points, 1
Although a phase shift of 80 ° cannot be discriminated, it is possible to discriminate the presence or absence of circumferential displacement of the piston ring 4 with respect to the groove 3 and the cylinder liner 1 by passing through the highest temperature portion. Furthermore, if there are three or more temperature measurement points. For example, the position of the abutment 4a can be specified over 360 °.
【００１５】したがって、上記温度分布から、ピストン
リング４が固着してシリンダライナ１に対する周方向相
対運動が停止したと検出され、この期間が予め設定して
おいた期間より長いときは、シリンダライナ１とピスト
ンリング４の潤滑状態が変化して焼き付き事故を起す予
兆であるとして、エンジンを停止し適当な措置を講ずる
ように警告を発するようにする。これにより、実際に異
常摩耗が発生する前に、熟練者を要することなく異常の
有無を検出することができる。Therefore, from the above temperature distribution, it is detected that the piston ring 4 is stuck and the circumferential relative motion with respect to the cylinder liner 1 is stopped, and when this period is longer than the preset period, the cylinder liner 1 As a sign that the lubrication state of the piston ring 4 will change to cause a seizure accident, a warning is issued to stop the engine and take appropriate measures. As a result, before the abnormal wear actually occurs, it is possible to detect the presence or absence of the abnormality without requiring a skilled person.
【００１６】なお、本発明は上記実施例のみに限定され
るものではなく、本発明の要旨を逸脱しない範囲内にお
いて種々変更を加え得ることは勿論である。The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.
【００１７】[0017]
【発明の効果】以上述べた如く、本発明の往復動エンジ
ン用ピストンリングの固着監視装置によれば、シリンダ
ライナの周方向複数個所での壁面計測温度の推移に基づ
く温度分布を求めることができるようにしたので、シリ
ンダライナとピストンリングとの間に焼き付きが発生す
る前の段階で起るピストンリングの周方向運動の停止
（固着）をとらえることができ、これにより焼き付きが
発生する前に適切な措置を施すことができて重大事故の
発生を未然に防止することができ、又、従来の如き温度
の絶対値ではなく温度の変化に基づいて判定できること
から、熟練を要することなく焼き付きの予兆を確実に検
出することができる、等の優れた効果を発揮する。As described above, according to the sticking monitoring device for a piston ring for a reciprocating engine of the present invention, it is possible to obtain the temperature distribution based on the transition of the wall surface measured temperature at a plurality of circumferential positions of the cylinder liner. With this configuration, it is possible to catch the stop (sticking) of the circumferential movement of the piston ring that occurs before the seizure occurs between the cylinder liner and the piston ring. Since various measures can be taken to prevent serious accidents from occurring and the judgment can be made based on the change in temperature rather than the absolute value of temperature as in the past, it is possible to predict the occurrence of seizure without skill. It has an excellent effect such as being able to reliably detect
【図１】本発明の往復動エンジン用ピストンリングの固
着監視装置の一実施例を示す概要図である。FIG. 1 is a schematic view showing an embodiment of a reciprocating engine piston ring sticking monitoring device of the present invention.
【図２】ピストンリングの斜視図である。FIG. 2 is a perspective view of a piston ring.
【図３】本発明によるピストンリングの固着監視要領を
示すもので、（イ）は温度測定個所を座標上に置いた
図、（ロ）は計測した温度推移図である。3A and 3B show a procedure for monitoring adherence of a piston ring according to the present invention, in which FIG. 3A is a diagram in which a temperature measurement point is placed on a coordinate, and FIG. 3B is a measured temperature transition diagram.
【図４】往復動エンジンの一例を示す部分断面図であ
る。FIG. 4 is a partial cross-sectional view showing an example of a reciprocating engine.
１ シリンダライナ ２ ピストン ３ 溝 ４ ピストンリング ６ 温度計測端 ７ 演算器 1 Cylinder liner 2 Piston 3 Groove 4 Piston ring 6 Temperature measurement end 7 Computer
Claims (1)
ピストンを往復動可能に収容するシリンダライナの周方
向複数個所に、該シリンダライナの壁面温度を検出する
ための温度計測端をそれぞれ取り付け、且つ上記シリン
ダライナの壁面温度計測結果に基づく温度分布からピス
トンリングの周方向変位を検出するようにした演算器を
備えた構成を有することを特徴とする往復動エンジン用
ピストンリングの固着監視装置。1. A temperature measuring end for detecting a wall surface temperature of a cylinder liner is attached to each of a plurality of circumferential positions of a cylinder liner that accommodates a piston in which a piston ring is fitted in a groove of an outer peripheral portion so as to reciprocate. A piston ring sticking monitoring apparatus for a reciprocating engine, characterized in that it has a configuration including a calculator configured to detect the circumferential displacement of the piston ring from the temperature distribution based on the wall surface temperature measurement result of the cylinder liner. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16382993A JP3291842B2 (en) | 1993-06-10 | 1993-06-10 | Monitoring device for sticking of piston ring for reciprocating engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16382993A JP3291842B2 (en) | 1993-06-10 | 1993-06-10 | Monitoring device for sticking of piston ring for reciprocating engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06346789A true JPH06346789A (en) | 1994-12-20 |
| JP3291842B2 JP3291842B2 (en) | 2002-06-17 |
Family
ID=15781542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16382993A Expired - Fee Related JP3291842B2 (en) | 1993-06-10 | 1993-06-10 | Monitoring device for sticking of piston ring for reciprocating engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3291842B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009157436A1 (en) * | 2008-06-24 | 2009-12-30 | 株式会社Ihi | Device and method of monitoring sliding conditions of piston ring |
| JP2010223679A (en) * | 2009-03-23 | 2010-10-07 | Nissan Motor Co Ltd | Deviation detection method and deviation detection device of abutment position of piston ring |
| WO2020193825A1 (en) * | 2019-03-28 | 2020-10-01 | Xavier Mas Sanz | Pyrometer probe protection device |
-
1993
- 1993-06-10 JP JP16382993A patent/JP3291842B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009157436A1 (en) * | 2008-06-24 | 2009-12-30 | 株式会社Ihi | Device and method of monitoring sliding conditions of piston ring |
| JP2010008112A (en) * | 2008-06-24 | 2010-01-14 | Ihi Corp | Piston ring sliding state monitoring apparatus and method |
| US20110113873A1 (en) * | 2008-06-24 | 2011-05-19 | Yoshiyuki Saito | Apparatus and method for monitoring sliding state of piston |
| US8429958B2 (en) | 2008-06-24 | 2013-04-30 | Ihi Corporation | Apparatus and method for monitoring sliding state of piston |
| JP2010223679A (en) * | 2009-03-23 | 2010-10-07 | Nissan Motor Co Ltd | Deviation detection method and deviation detection device of abutment position of piston ring |
| WO2020193825A1 (en) * | 2019-03-28 | 2020-10-01 | Xavier Mas Sanz | Pyrometer probe protection device |
| ES2784954A1 (en) * | 2019-03-28 | 2020-10-02 | Sanz Xavier Mas | PYROMETRIC PROBE PROTECTION DEVICE (Machine-translation by Google Translate, not legally binding) |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3291842B2 (en) | 2002-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |