JP3188003B2 - Combustion gas leak detection device for internal combustion engine - Google Patents
Combustion gas leak detection device for internal combustion engineInfo
- Publication number
- JP3188003B2 JP3188003B2 JP35113092A JP35113092A JP3188003B2 JP 3188003 B2 JP3188003 B2 JP 3188003B2 JP 35113092 A JP35113092 A JP 35113092A JP 35113092 A JP35113092 A JP 35113092A JP 3188003 B2 JP3188003 B2 JP 3188003B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- combustion chamber
- temperature
- cooling water
- detection sensor
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は内燃機関の燃焼ガス漏洩
検知装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting combustion gas leakage of an internal combustion engine.
【０００２】[0002]
【従来の技術】内燃機関の燃焼ガス漏洩検知は通常行わ
れていない。そのため時として重大事故を見逃す結果と
なっている。燃焼ガスの漏洩個所が機関外部にある場合
はガスシール部よりの漏洩ガスが目視で判断できるため
検知が可能である。しかしかくれた燃焼室内部から燃焼
ガス漏洩がある場合判別は困難である。2. Description of the Related Art Leakage detection of a combustion gas in an internal combustion engine is not usually performed. As a result, some serious accidents are sometimes overlooked. If the leaked portion of the combustion gas is outside the engine, the leaked gas from the gas seal portion can be visually determined, and thus detection is possible. However, it is difficult to determine when there is a combustion gas leak from the inside of the hidden combustion chamber.
【０００３】[0003]
【発明が解決しようとする課題】内燃機関の燃焼ガス漏
洩検知は従来特別なセンサを使用した異常診断的装置は
ない。このため例えば機関稼働中に燃焼ガスが燃焼室ま
わりの冷却水に漏洩混入し、この現象を早期に発見でき
ずに見逃したため、二次的大事故につながる恐れがあ
る。又燃焼ガスが高温高圧のため漏洩した場合これに注
目した検知技術がのぞまれていた。本発明の目的は前記
課題の解決策として燃焼ガスの漏洩を早期に検知する装
置を提供するにある。Conventionally, there is no abnormality diagnostic device using a special sensor for detecting a combustion gas leak of an internal combustion engine. Therefore, for example, the combustion gas leaks into the cooling water around the combustion chamber during operation of the engine, and this phenomenon can not be discovered early but overlooked, which may lead to a secondary major accident. In addition, when the combustion gas leaks due to high temperature and high pressure, a detection technique paying attention to the leakage has been desired. An object of the present invention is to provide a device for detecting a leakage of combustion gas at an early stage as a solution to the above-mentioned problem.
【０００４】[0004]
【課題を解決するための手段】本発明の燃焼ガスの漏洩
検出装置は、各燃焼室を冷却する冷却水系に各シリンダ
毎に設置された温センサ及び圧力センサと、前記温度セ
ンサ及び圧力センサの信号を増巾変換する機能を有する
装置と、前記冷却水の温度及び圧力を表示する機能を有
する装置と、温度及び圧力が設定レベル以上又は以下で
は警報を発生する機能を有する装置とを有してなること
を特徴とする。According to the present invention, there is provided a device for detecting a leakage of a combustion gas, comprising: a temperature sensor and a pressure sensor installed for each cylinder in a cooling water system for cooling each combustion chamber; A device having a function of amplifying and converting a signal, a device having a function of displaying the temperature and pressure of the cooling water, and a device having a function of generating an alarm when the temperature and pressure are above or below a set level. It is characterized by becoming.
【０００５】[0005]
【作用】機関運転中に燃焼室内から燃焼室まわりの破損
事故等により燃焼ガスもれが発生した場合を考える。燃
焼室の周囲は水路を持つ冷却室で囲まれている。この燃
焼室から冷却室までの間の部位に何らかの異常（故障）
により漏洩があったとき燃焼室内のガスが冷却水中に入
り込み、燃焼室内の高温高圧ガスが冷却水に入り込むこ
とにより水室内の圧力及び温度を変化させる。これを各
シリンダの冷却水系ラインに設置された圧力検知センサ
及び温度検知センサが検知する。各シリンダの冷却水出
口に置かれた圧力検知センサ及び温度検知センサからの
信号を増巾変換する。前記冷却水の圧力及び温度を機関
稼働時常時監視表示する。これにより異状を早期に検出
できる。前記温度及び圧力が設定レベル以上又は以下で
は警報を発生する。[Operation] Consider a case in which combustion gas leaks from the combustion chamber due to a breakage accident around the combustion chamber during operation of the engine. The periphery of the combustion chamber is surrounded by a cooling chamber having a water channel. Some abnormality (failure) in the part between the combustion chamber and the cooling chamber
When the gas leaks, the gas in the combustion chamber enters the cooling water, and the high-temperature and high-pressure gas in the combustion chamber enters the cooling water to change the pressure and temperature in the water chamber. This is detected by a pressure detection sensor and a temperature detection sensor installed in the cooling water system line of each cylinder. The signal from the pressure detection sensor and the temperature detection sensor placed at the cooling water outlet of each cylinder is amplified and converted. The pressure and temperature of the cooling water are constantly monitored and displayed during operation of the engine. Thereby, the abnormality can be detected at an early stage. If the temperature and pressure are above or below the set levels, an alarm is generated.
【０００６】[0006]
【実施例】実施例を図１〜３によって説明する。図１は
実施例の検知センサ設置場所の図、図２は実施例の計測
系ブロック線図、図３はＬＥＤによる監視表示の図であ
る。機関の各シリンダの冷却水出口に燃焼ガスもれを検
知する圧力センサ及び温度センサを設置する。前記検知
センサからの信号を常時監視するために検知信号をシリ
ンダ毎にＬＥＤ表示する。前記監視する圧力又は温度の
値にしきい値を設け異状の場合には警報レベル値により
異常が検知できる機能をもつものとする。図において、
１は機関本体、２は機関燃焼室、３は冷却水入口管、４
は冷却水タンク、５は供給ポンプで内燃機関の公知の要
素である。７は供給ライン圧力センサ、８は供給ライン
温度センサで共に供給ポンプ５の吐出管に設けられてい
る。９はＮｏ．１燃焼室用圧力検知センサでＮｏ．１燃
焼室の冷却水出口に設けられている。１１はＮｏ．１燃
焼室用温度検知センサでＮｏ．１燃焼室用圧力検知セン
サ９の近くに設けられている。１０はｎ番燃焼室用圧力
検知センサでｎ番燃焼室の冷却水出口に設けられてい
る。１２はｎ番燃焼室用温度検知センサでｎ番燃焼室用
圧力検知センサ１０の近くに設けられている。An embodiment will be described with reference to FIGS. FIG. 1 is a diagram of a detection sensor installation place of the embodiment, FIG. 2 is a block diagram of a measurement system of the embodiment, and FIG. At the cooling water outlet of each cylinder of the engine, a pressure sensor and a temperature sensor for detecting the leakage of the combustion gas are installed. In order to constantly monitor the signal from the detection sensor, the detection signal is displayed by LED for each cylinder. It is assumed that a threshold value is provided for the monitored pressure or temperature value, and in the case of an abnormality, a function of detecting an abnormality by an alarm level value is provided. In the figure,
1 is an engine body, 2 is an engine combustion chamber, 3 is a cooling water inlet pipe, 4
Is a cooling water tank, and 5 is a supply pump, which is a known element of an internal combustion engine. 7 is a supply line pressure sensor, and 8 is a supply line temperature sensor, both of which are provided in the discharge pipe of the supply pump 5. No. 9 is No. No. 1 in the pressure detection sensor for combustion chamber. It is provided at the cooling water outlet of one combustion chamber. No. 11 is No. No. 1 combustion chamber temperature detection sensor. It is provided near the pressure detection sensor 9 for one combustion chamber. Reference numeral 10 denotes an nth combustion chamber pressure detection sensor provided at a cooling water outlet of the nth combustion chamber. Reference numeral 12 denotes an n-th combustion chamber temperature detection sensor which is provided near the n-th combustion chamber pressure detection sensor 10.
【０００７】２１は圧力検知センサ、２２は温度検知セ
ンサで共に各燃焼室毎に設けられている。２３は温度セ
ンサ入力装置、圧力センサ入力装置で圧力検知センサ２
１及び温度検知センサ２２がそれぞれ接続されている。
２４は温度圧力増巾変換器で温度センサ入力装置圧力セ
ンサ入力装置２３が接続されている。２５は監視表示装
置で温度圧力増巾装置２４に接続されている。２６は警
報機関停止信号器で監視表示装置２５に接続されてい
る。ＴH は警報レベル１、ＴHHは警報レベル２である。
ＳH は警報レベル１、ＳHHは警報レベル２、ＳL は警報
レベル３である。Reference numeral 21 denotes a pressure detection sensor, and reference numeral 22 denotes a temperature detection sensor, both provided for each combustion chamber. Reference numeral 23 denotes a temperature sensor input device and a pressure sensor input device.
1 and the temperature detection sensor 22 are connected respectively.
Reference numeral 24 denotes a temperature / pressure increase converter to which a temperature sensor input device 23 is connected. Reference numeral 25 denotes a monitoring display device which is connected to the temperature / pressure amplifier 24. Reference numeral 26 denotes an alarm engine stop signal which is connected to the monitoring display device 25. TH is the alarm level 1 and THH is the alarm level 2.
S H is the alarm level 1, S HH is the alarm level 2, and S L is the alarm level 3.
【０００８】前記実施例の作用を説明する。供給ポンプ
５は冷却水タンク４の冷却水を吸って冷却水入口管３を
通して各機関燃焼室２まわりの水室へ送る。前記冷却水
は各機関燃焼室２を冷やして冷却水タンクへ返される。
供給ライン圧力センサ７、供給ライン温度センサ８は供
給ポンプ５の出口の冷却水の圧力及び温度を検知する。
Ｎｏ．１燃焼室用圧力検知センサ９はＮｏ．１燃焼室ま
わりの冷却水の出口の圧力を検知し、ｎ番燃焼室用圧力
検出センサ１０はｎ番燃焼室まわりの冷却水出口の圧力
を検知し、それぞれ圧力センサ入力装置２３へ信号を送
る。Ｎｏ．１燃焼室用温度検知センサ１１はＮｏ．１燃
焼室まわりの冷却水の出口の冷却水温度を検知し、ｎ番
燃焼室用温度検出センサ１２はｎ番燃焼室まわりの冷却
水の出口の冷却水温度を検知しそれぞれその信号を温度
センサ入力装置２３へ送る。温度センサ入力装置、圧力
センサ入力装置２３は、信号を温度圧力増巾変換装置２
４に送りアナログ信号として監視表示装置２５へ送ら
れ、監視表示装置２５はシリンダ別に圧力、温度の値を
図３に示すようにＬＥＤ表示する。The operation of the above embodiment will be described. The supply pump 5 sucks the cooling water in the cooling water tank 4 and sends it to the water chambers around each engine combustion chamber 2 through the cooling water inlet pipe 3. The cooling water cools each engine combustion chamber 2 and is returned to the cooling water tank.
The supply line pressure sensor 7 and the supply line temperature sensor 8 detect the pressure and temperature of the cooling water at the outlet of the supply pump 5.
No. No. 1 combustion chamber pressure detection sensor 9 The pressure at the outlet of the cooling water around the first combustion chamber is detected, and the nth combustion chamber pressure detection sensor 10 detects the pressure at the cooling water outlet around the nth combustion chamber, and sends a signal to the pressure sensor input device 23, respectively. . No. No. 1 combustion chamber temperature detection sensor 11 The cooling water temperature at the outlet of the cooling water around the first combustion chamber is detected, and the nth combustion chamber temperature detection sensor 12 detects the temperature of the cooling water at the outlet of the cooling water around the nth combustion chamber. Send to input device 23. The temperature sensor input device and the pressure sensor input device 23 convert the signal into the temperature / pressure amplification converter 2
The monitor signal is sent to the monitor display device 25 as an analog signal, and the monitor display device 25 displays the pressure and temperature values for each cylinder as LEDs as shown in FIG.
【０００９】前記監視表示においてはそれぞれシリンダ
別に設定レベルを設け警報レベル１，２，３と表示す
る。警報機関停止信号器２６は、監視表示装置２５から
信号をそれぞれ受け警報或は機関停止信号を発生する。
冷却水の温度は供給ポンプ５の出口（供給ライン温度検
知センサ８が検知）より燃焼室出口（Ｎｏ．１燃焼室用
温度検知センサ１１，ｎ番燃焼室用温度検知センサ１２
が検知）の方が高くなるが正常の場合はある一定の範囲
内である。燃焼ガスが冷却水内に漏れると燃焼室出の冷
却水温度が上る。図３に示すとおり冷却水温度ＴH で警
報レベル１、ＴHHで警報レベル２とする。冷却水の圧力
は正常の場合は供給ポンプ出口（供給ライン圧力検知セ
ンサ７が検知）と燃焼室出口（Ｎｏ．１燃焼室用圧力検
知センサ９，ｎ番燃焼室用圧力検知センサ１０が検知）
と略同じである。燃焼ガスが冷却水内に漏れると燃焼室
出口の冷却水の圧力が上る。図３の圧力ＳH で警報レベ
ル１、圧力ＳHHで警報レベル２とする。燃焼室の損傷が
大きくなると冷却水が逆に燃焼室内に漏れて冷却水の圧
力が下り図３の圧力ＳL で警報レベル３とする。警報機
関停止信号器２６は前記警報レベルに応じ警報或は機関
停止信号を発生し事故の防止を図る。In the monitoring display, a set level is provided for each cylinder, and alarm levels 1, 2, and 3 are displayed. The alarm engine stop signal 26 receives a signal from the monitor display device 25 and generates an alarm or engine stop signal.
The temperature of the cooling water is supplied from the outlet of the supply pump 5 (detected by the supply line temperature detection sensor 8) to the combustion chamber outlet (No. 1 combustion chamber temperature detection sensor 11, temperature sensor for nth combustion chamber 12).
Is higher), but is normal within a certain range. If the combustion gas leaks into the cooling water, the temperature of the cooling water coming out of the combustion chamber rises. Warning level in the cooling water temperature T H as shown in FIG. 3 1, the alarm level 2 at T HH. When the pressure of the cooling water is normal, the supply pump outlet (detected by the supply line pressure detection sensor 7) and the combustion chamber outlet (detected by the No. 1 combustion chamber pressure detection sensor 9 and the nth combustion chamber pressure detection sensor 10)
Is almost the same as When the combustion gas leaks into the cooling water, the pressure of the cooling water at the outlet of the combustion chamber increases. Warning level 1 at a pressure S H of FIG. 3, the alarm level 2 at a pressure S HH. When the damage to the combustion chamber increases, the cooling water leaks into the combustion chamber and the pressure of the cooling water drops , and the alarm is set to the alarm level 3 at the pressure SL in FIG. The alarm engine stop signal 26 generates an alarm or an engine stop signal according to the alarm level to prevent an accident.
【００１０】[0010]
【発明の効果】本発明の内燃機関燃焼ガス漏洩検知装置
を設置することにより燃焼室冷却部周辺のシリンダライ
ナ，シリンダカバーの異常（割れ等の損傷）を早期に検
知することができる。よって本発明は内燃機関の燃焼ガ
スの漏洩を早期に検知する装置を提供できる。By installing the internal combustion engine combustion gas leak detection device of the present invention, abnormality (damage such as cracking) of the cylinder liner and cylinder cover around the cooling section of the combustion chamber can be detected at an early stage. Therefore, the present invention can provide a device for early detection of leakage of combustion gas from an internal combustion engine.
【図１】実施例の検知センサ設置場所の図。FIG. 1 is a diagram of a detection sensor installation location according to an embodiment.
【図２】実施例の計測系のブロック線図。FIG. 2 is a block diagram of a measurement system according to the embodiment.
【図３】実施例の監視表示の図。FIG. 3 is a diagram of a monitoring display according to the embodiment.
【符号の説明】 １…機関本体、２…機関燃焼室、３…冷却水入口管、５
…供給ポンプ、９…Ｎｏ．１燃焼室用圧力検知センサ、
１０…ｎ番燃焼室用圧力検知センサ、１１…Ｎｏ．１燃
焼室用温度検知センサ、１２…ｎ番燃焼室用温度検知セ
ンサ、２１…圧力検知センサ、２２…温度検知センサ、
２３…温度センサ入力装置圧力センサ入力装置、２４…
温度圧力増巾変換器、２５…監視表示装置、２６…警報
機関停止信号器。[Description of Signs] 1 ... Engine main body, 2 ... Engine combustion chamber, 3 ... Cooling water inlet pipe, 5
... supply pump, 9 ... No. 1 Combustion chamber pressure detection sensor,
10 ... No. n pressure sensor for combustion chamber, 11 ... No. 1 Temperature detection sensor for combustion chamber, 12 ... Temperature detection sensor for nth combustion chamber, 21 ... Pressure detection sensor, 22 ... Temperature detection sensor,
23 temperature input device pressure sensor input device, 24 input device
Temperature / pressure amplification converter, 25: monitoring display device, 26: alarm engine stop signal.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−108979（ＪＰ，Ａ) 特開 昭58−90138（ＪＰ，Ａ) 特開 昭56−160519（ＪＰ，Ａ) 実開 昭57−114293（ＪＰ，Ｕ) 実開 昭59−131041（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01M 3/28 F02D 45/00 360 F02D 45/00 368 G01M 3/02 G01M 15/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-108979 (JP, A) JP-A-58-90138 (JP, A) JP-A-56-160519 (JP, A) 114293 (JP, U) Actually open sho 59-131041 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G01M 3/28 F02D 45/00 360 F02D 45/00 368 G01M 3 / 02 G01M 15/00
Claims (1)
ダ毎に設置された温度センサ（１１），（１２），（２
２）及び圧力センサ（９），（１０），（２１）と、前
記温度センサ及び圧力センサの信号を増巾変換する機能
を有する装置（２４）と、前記冷却水の温度及び圧力を
表示する機能を有する装置（２５）と、温度及び圧力が
設定レベル以上又は以下では警報を発生する機能を有す
る装置（２６）とを有してなる内燃機関の燃焼ガス漏洩
検知装置。1. Temperature sensors (11), (12), (2) provided for each cylinder in a cooling water system for cooling each combustion chamber.
2) and a pressure sensor (9), (10), (21), a device (24) having a function of amplifying and converting the signals of the temperature sensor and the pressure sensor, and displaying the temperature and pressure of the cooling water. A combustion gas leak detection device for an internal combustion engine, comprising: a device (25) having a function; and a device (26) having a function of generating an alarm when the temperature and pressure are at or above a set level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35113092A JP3188003B2 (en) | 1992-12-07 | 1992-12-07 | Combustion gas leak detection device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35113092A JP3188003B2 (en) | 1992-12-07 | 1992-12-07 | Combustion gas leak detection device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06174580A JPH06174580A (en) | 1994-06-24 |
| JP3188003B2 true JP3188003B2 (en) | 2001-07-16 |
Family
ID=18415254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35113092A Expired - Fee Related JP3188003B2 (en) | 1992-12-07 | 1992-12-07 | Combustion gas leak detection device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3188003B2 (en) |
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Cited By (2)
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|---|---|---|---|---|
| CN106226008A (en) * | 2016-08-26 | 2016-12-14 | 青岛华涛汽车模具有限公司 | A kind of airtight cold plug in all-in-one |
| CN106226008B (en) * | 2016-08-26 | 2018-09-28 | 青岛华涛汽车模具有限公司 | A kind of airtight cold plug in all-in-one machine |
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