JPH06174580A - Leakage detector for combustion gas of internal combustion engine - Google Patents
Leakage detector for combustion gas of internal combustion engineInfo
- Publication number
- JPH06174580A JPH06174580A JP4351130A JP35113092A JPH06174580A JP H06174580 A JPH06174580 A JP H06174580A JP 4351130 A JP4351130 A JP 4351130A JP 35113092 A JP35113092 A JP 35113092A JP H06174580 A JPH06174580 A JP H06174580A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- pressure
- temperature
- combustion chamber
- combustion
- 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
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
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 combustion gas leak detection device for 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 Combustion gas leakage detection of an internal combustion engine is not usually performed. As a result, they sometimes miss serious accidents. If the location where the combustion gas leaks is outside the engine, it is possible to detect it because the leak gas from the gas seal can be visually determined. However, it is difficult to discriminate when there is a combustion gas leak from 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。In the detection of combustion gas leakage in an internal combustion engine, there is no conventional abnormality diagnostic device using a special sensor. Therefore, for example, the combustion gas leaks and mixes into the cooling water around the combustion chamber during operation of the engine, and this phenomenon could not be detected early and was overlooked, which could lead to a secondary major accident. In addition, when combustion gas leaks due to high temperature and high pressure, a detection technique that pays attention to this has been desired. An object of the present invention is to provide a device for early detection of combustion gas leakage as a solution to the above problems.
【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。SUMMARY OF THE INVENTION A combustion gas leakage detection device according to the present invention comprises a temperature sensor and a pressure sensor installed for each cylinder in a cooling water system for cooling each combustion chamber, and the temperature sensor and the pressure sensor. It has a device having a function of increasing 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 issuing an alarm when the temperature and pressure are above or below a set level. It is characterized by
【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 where combustion gas leaks from the combustion chamber due to a damage accident around the combustion chamber during engine operation. The periphery of the combustion chamber is surrounded by a cooling chamber having a water channel. Any abnormality (fault) in the part between the combustion chamber and the cooling chamber
When there is a leak, the gas in the combustion chamber enters the cooling water, and the high-temperature high-pressure gas in the combustion chamber enters the cooling water, thereby changing 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 signals from the pressure detection sensor and the temperature detection sensor placed at the cooling water outlet of each cylinder are amplified and converted. The pressure and temperature of the cooling water are constantly monitored and displayed during engine operation. This allows the abnormality to be detected early. When the temperature and pressure are above or below the set level, an alarm is issued.
【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。EXAMPLES Examples will be described with reference to FIGS. FIG. 1 is a diagram of a place where a detection sensor is installed according to the embodiment, FIG. 2 is a block diagram of a measurement system according to the embodiment, and FIG. A pressure sensor and a temperature sensor for detecting combustion gas leakage are installed at the cooling water outlet of each cylinder of the engine. In order to constantly monitor the signal from the detection sensor, the detection signal is LED-displayed for each cylinder. A threshold value is provided for the value of the pressure or temperature to be monitored, and in the case of an abnormality, the alarm level value has a function of detecting an abnormality. 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. Reference numeral 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. The No. 1 combustion chamber pressure sensor. It is provided at the cooling water outlet of one combustion chamber. No. 11 is No. No. 1 in the temperature detection sensor for the combustion chamber. It is provided near the pressure detection sensor 9 for one combustion chamber. Reference numeral 10 is a pressure detection sensor for the nth combustion chamber, which is provided at the 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 is a pressure detection sensor, and 22 is a temperature detection sensor, both of which are provided for each combustion chamber. Reference numeral 23 denotes a temperature sensor input device and a pressure sensor input device, which are pressure detection sensors 2
1 and the temperature detection sensor 22 are connected to each other.
A temperature / pressure amplification converter 24 is connected to the temperature sensor input device and the pressure sensor input device 23. Reference numeral 25 is a monitoring display device, which is connected to the temperature / pressure amplification device 24. An alarm engine stop signal 26 is connected to the monitor display device 25. T H is alarm level 1 and T HH is alarm level 2.
S H is alarm level 1, S HH is alarm level 2, and S L is 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 chamber 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 is No. 1 The pressure at the outlet of the cooling water around the combustion chamber is detected, the pressure detection sensor 10 for the nth combustion chamber detects the pressure at the outlet of the cooling water 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 1 The temperature of the cooling water at the outlet of the cooling water around the combustion chamber is detected, and the temperature detection sensor 12 for the n-th combustion chamber detects the temperature of the cooling water at the outlet of the cooling water around the n-th combustion chamber, and the signals thereof are used as temperature sensors. Send to the input device 23. The temperature sensor input device and the pressure sensor input device 23 convert the signal into the temperature / pressure amplification conversion device 2
4 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 by LED 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 device 26 receives a signal from the monitor display device 25 and generates an alarm or an engine stop signal.
The temperature of the cooling water is measured 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, nth combustion chamber temperature detection sensor 12).
Is higher than normal detection), but it is within a certain range when normal. When the combustion gas leaks into the cooling water, the temperature of the cooling water exiting the combustion chamber rises. As shown in FIG. 3, an alarm level 1 is set at the cooling water temperature T H , and an alarm level 2 is set at T HH . When the pressure of the cooling water is normal, the supply pump outlet (the supply line pressure detection sensor 7 detects) and the combustion chamber outlet (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 rises. An alarm level 1 is set at the pressure S H in FIG. 3, and an alarm level 2 is set at the pressure S HH . When the damage to the combustion chamber becomes large, the cooling water leaks into the combustion chamber to the contrary, the pressure of the cooling water decreases , and the alarm level 3 is set at the pressure S L in FIG. The alarm engine stop signal device 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 leakage detection device of the present invention, an abnormality (damage such as crack) of the cylinder liner and the cylinder cover around the combustion chamber cooling portion can be detected at an early stage. Therefore, the present invention can provide an apparatus for early detecting the leakage of combustion gas of 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 location where a detection sensor according to an embodiment is installed.
【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 an embodiment.
【図3】実施例の監視表示の図。FIG. 3 is a diagram of a monitor display of the embodiment.
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。1 ... Engine body, 2 ... Engine combustion chamber, 3 ... Cooling water inlet pipe, 5
… Supply pump, 9… No. 1 Combustion chamber pressure sensor,
No. 10 ... No. n combustion chamber pressure detection sensor, 11 ... No. DESCRIPTION OF SYMBOLS 1 combustion chamber temperature detection sensor, 12 ... nth combustion chamber temperature detection sensor, 21 ... pressure detection sensor, 22 ... temperature detection sensor,
23 ... Temperature sensor input device Pressure sensor input device, 24 ...
Temperature / pressure amplification converter, 25 ... Monitoring display device, 26 ... Alarm engine stop signal device.
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. A temperature sensor (11), (12), (2) provided for each cylinder in a cooling water system for cooling each combustion chamber.
2) and pressure sensors (9), (10) and (21), a device (24) having a function of increasing and converting the signals of the temperature sensor and the pressure sensor, and the temperature and pressure of the cooling water are displayed. A combustion gas leakage 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 temperature and pressure are above or below 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 true JPH06174580A (en) | 1994-06-24 |
JP3188003B2 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) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020082524A (en) * | 2001-04-24 | 2002-10-31 | 현대자동차주식회사 | a combustion gas leak sensing apparatus for a head gasket of engine |
KR100371766B1 (en) * | 2000-12-01 | 2003-02-11 | 기아자동차주식회사 | Burning gas leaking sensor |
KR100448123B1 (en) * | 2002-10-04 | 2004-09-10 | 현대자동차주식회사 | Device for knowing crack of cylinder head |
KR100482576B1 (en) * | 2002-10-04 | 2005-04-14 | 현대자동차주식회사 | Gas outflow testing device for vehicle engine |
CN106404294A (en) * | 2016-10-31 | 2017-02-15 | 苏州工业园区格比机电有限公司 | Plugging device for test of engine cooler |
FR3143687A1 (en) * | 2022-12-19 | 2024-06-21 | Psa Automobiles Sa | ARRANGEMENT OF A THERMAL ENGINE AND METHOD FOR CONTROLLING SUCH ARRANGEMENT |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108982025B (en) * | 2016-08-26 | 2020-04-28 | 青岛华涛汽车模具有限公司 | All-in-one machine with air tightness detection and metal sleeve cold insertion functions |
-
1992
- 1992-12-07 JP JP35113092A patent/JP3188003B2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100371766B1 (en) * | 2000-12-01 | 2003-02-11 | 기아자동차주식회사 | Burning gas leaking sensor |
KR20020082524A (en) * | 2001-04-24 | 2002-10-31 | 현대자동차주식회사 | a combustion gas leak sensing apparatus for a head gasket of engine |
KR100448123B1 (en) * | 2002-10-04 | 2004-09-10 | 현대자동차주식회사 | Device for knowing crack of cylinder head |
KR100482576B1 (en) * | 2002-10-04 | 2005-04-14 | 현대자동차주식회사 | Gas outflow testing device for vehicle engine |
CN106404294A (en) * | 2016-10-31 | 2017-02-15 | 苏州工业园区格比机电有限公司 | Plugging device for test of engine cooler |
FR3143687A1 (en) * | 2022-12-19 | 2024-06-21 | Psa Automobiles Sa | ARRANGEMENT OF A THERMAL ENGINE AND METHOD FOR CONTROLLING SUCH ARRANGEMENT |
Also Published As
Publication number | Publication date |
---|---|
JP3188003B2 (en) | 2001-07-16 |
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