JPS6114432A - Engine fault detection - Google Patents
Engine fault detectionInfo
- Publication number
- JPS6114432A JPS6114432A JP13557584A JP13557584A JPS6114432A JP S6114432 A JPS6114432 A JP S6114432A JP 13557584 A JP13557584 A JP 13557584A JP 13557584 A JP13557584 A JP 13557584A JP S6114432 A JPS6114432 A JP S6114432A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- sound
- sound pressure
- enclosure
- fault
- 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
- 238000001514 detection method Methods 0.000 title claims description 10
- 230000002159 abnormal effect Effects 0.000 claims abstract description 14
- 230000005856 abnormality Effects 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業」二の利用分野〉
この発明は、エンジンヒートポンプやエンジン発電機等
の主として据置型エンジン機器におけるエンジンの故障
を早期に検出するための装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industry> Second Field of Application The present invention relates to a device for early detection of engine failure mainly in stationary engine equipment such as engine heat pumps and engine generators.
く従来技術〉
１、−、記据置望エンジン（蔑器においては、潤滑油圧
の低Ｆ’、油温１−昇、冷却水温のに昇、排気温度の七
シ１等か所定の一］−限に接近又は到達することを検出
して、−・層の悪化を抑制するために種々のインターロ
ンクＨ’ｌｆ！ｕを１動かぜるよう１こしている。Prior art> 1. -, the stationary engine (in the case of a standalone engine, the lubricating oil pressure is low F', the oil temperature is raised by 1, the cooling water temperature is raised, and the exhaust temperature is set to 7 or 1 or a predetermined value). In order to detect when the limit is approached or reached, various interlocks H'lf!u are moved by one in order to suppress the deterioration of the layer.
く解決しようとする問題点〉
しかし、共振による回転系の破損や、測定月未タトの箇
所での故障や破損に対しては月応しきれないものであっ
た。However, it has not been possible to deal with damage to the rotating system due to resonance or failures or damage at locations where measurements have not yet been made.
、−の発明は、予測できない箇所での故障を早期に検出
発見して適切な処理を施こすことによって、大きい損害
への発展を未然に防止するために有効な故障検出方法を
提供しようとしたものである。The inventions of , - sought to provide an effective failure detection method to prevent the development of major damage by detecting and discovering failures at an early stage in unpredictable locations and taking appropriate measures. It is something.
〈問題を解決するための手段〉
このための本発明は、エンジンを収容シたエンクローン
ヤーの内部に集音マイクロフォンを取イ」け、集めたエ
ンジン音を複数種の周波数域のフィルターにかけ、各フ
ィルターで抽出された音波の音圧か夫々に対して予め設
定した所定レベル以−にの異常音圧に達したことを判別
して、異った種類の安全処理用信号を出すようにし、低
す・周波数域の異常音圧を判別した場合には、エンジン
停止信号を発してエンジンを停止させ、高い周波数域の
異常音圧を判別した場合には、エンジン異常警報信号を
発して、エンジン異常警報装置を作動させるとともに、
エンジンの運転を維持させることを特徴とするものであ
る。<Means for Solving the Problem> To this end, the present invention installs a sound collection microphone inside the enclosure housing the engine, filters the collected engine sound in multiple frequency ranges, It is determined that the sound pressure of the sound waves extracted by each filter has reached an abnormal sound pressure of a predetermined level or higher, and different types of safety processing signals are output. If abnormal sound pressure in the low frequency range is detected, an engine stop signal is issued to stop the engine, and if abnormal sound pressure is detected in the high frequency range, an engine abnormality warning signal is issued to stop the engine. In addition to activating the abnormality alarm device,
It is characterized by maintaining the operation of the engine.
〈作 用〉
上記方法によると、エンクロージャーで外部騒音か遮断
された状態で、エンクロージャ−内にこモッたエネルギ
ー密度の高いエンジン音のみがマイクロフォンに高感度
に集音され、各周波数域での異常音圧が的確に検出判別
され、この場合において、エンジンが重破損を起して低
い周波数域で異常音圧を発生したときに、これを判別す
る事に基づき、エンジンを速やかに停止させてエンジン
がそれ以上に重破損する危険を無くす。<Operation> According to the above method, with external noise blocked by the enclosure, only the engine sound with high energy density contained within the enclosure is collected with high sensitivity by the microphone, and abnormalities in each frequency range are detected. Sound pressure is accurately detected and determined, and in this case, when the engine is severely damaged and abnormal sound pressure is generated in a low frequency range, based on this determination, the engine is immediately stopped and the engine eliminates the risk of further damage.
また、エンジンが軽破損を起して高い周波数域の異常音
圧を発生したとぎに、これを判別する事に基づきエンジ
ン異常警報を発してエンジンに軽破損が発生した事を警
報するとともに、エンジンを運転させ続けて作業を不意
に中断させない。In addition, when the engine has suffered minor damage and abnormal sound pressure in a high frequency range is generated, an engine abnormality warning is issued based on this identification to warn that the engine has suffered minor damage. Do not allow the machine to continue operating and cause work to be interrupted unexpectedly.
〈実施例〉
第１図に本発明方法の概略構成かブロンク図として示さ
れる。<Example> FIG. 1 shows a schematic structure of the method of the present invention as a bronc diagram.
タロこおいで１は、エンジンヒートポンプユニットやエ
ンジン発電機などの据置型のエンジン応用ＫＥ器を示し
ており、エンジン２はユニットケースやり】音ケースな
どのエンクロージャー３内に収容されている。1 indicates a stationary engine-applied KE device such as an engine heat pump unit or an engine generator, and the engine 2 is housed in an enclosure 3 such as a unit case or a sound case.
エンジン２には、潤滑油圧検出センサー４、油温検出セ
ンサー５、冷却水温検出センサー６、排気温度検出、、
ｌ、ア、、、−・７、等。＋アや一類７、設（１，へれ
、これらの情報が制御装置８に入力され、各検出系での
異常の程度によって、エンジン減速制御、エンジン停止
制御等の安全処理信号かエンジン１に出力されるととも
に、エンジン異常警報表示装置９か作動される。The engine 2 includes a lubricating oil pressure detection sensor 4, an oil temperature detection sensor 5, a cooling water temperature detection sensor 6, an exhaust temperature detection sensor, etc.
l, a,, -・7, etc. This information is input to the control device 8, and depending on the degree of abnormality in each detection system, safety processing signals such as engine deceleration control and engine stop control are sent to the engine 1. At the same time, the engine abnormality warning display device 9 is activated.
エンクロージャー３の壁面にはマイクロフォン１０か装
備され、エンクローツヤ−内のエンジン音か集音される
。検出されたエンジン音は周波数域の異なる複数種のフ
ィルター１１ａ・１１１）・Ｊｌｃに通されて、各周波
数域ごとの音波が抽出される。A microphone 10 is installed on the wall of the enclosure 3, and the engine sound inside the enclosure is collected. The detected engine sound is passed through multiple types of filters 11a, 111) and Jlc with different frequency ranges, and sound waves in each frequency range are extracted.
抽出された各周波数域の音波の音圧か次の比較器１２ａ
・１２１）・１２ｃ１こおいて、予め計測し入力しであ
る正常運転時の各周波数域の音圧と比較され、検出音波
に異常音が含まれて音圧か高くなっていると、これが制
御回路８で判別されて、エンジン２に安全処理のための
制御信号が出されるのである。The sound pressure of the extracted sound waves in each frequency range is determined by the next comparator 12a.
・121)・12c1 The sound pressure in each frequency range during normal operation, which has been measured and input in advance, is compared, and if the detected sound waves include abnormal sound and the sound pressure is high, this is the control The circuit 8 makes a determination and sends a control signal to the engine 2 for safety processing.
例えば、第２図に示すように正常運転時におけるエンジ
ン音のスペクトラムＡに対して１０００ Ｈｚ乃至２０
０００ Ｈｚの範囲で高・中・低の３段階周波数域１’
、ｎ、Ｉを設定し、高い周波数域■で異常音か含まれて
いるときには軽度故障とみなし、エンジン運転は続行し
ながらエンジン異常警報表示のみを行ってエンジン異常
警報を発する。又、中間の周波数域１１で異常か認めら
れたときは中度故障とみなし、エンジン回転をアイドリ
ングまで減速制御腰一定時間後にエンジンを停止すると
とも痙
に、警報を出す。更に高い周波数域■で異常があっブこ
場合１こは、重度故障とみなし、直ちにエンジン停止制
御して警報を出す。For example, as shown in Fig. 2, the spectrum A of the engine sound during normal operation is 1000 Hz to 20
3-step frequency range of high, medium, and low in the range of 000 Hz1'
. Further, when an abnormality is detected in the intermediate frequency range 11, it is regarded as a moderate failure, and the engine rotation is decelerated to idling. After a certain period of time, the engine is stopped and a warning is issued. If there is an abnormality in the higher frequency range (1), it will be treated as a severe failure, and the engine will be immediately controlled to stop and a warning will be issued.
〈効 果〉
以」二説明し仁ように、本発明方法によれば、センサー
が設置できないような不測な箇所や現像に月するエンジ
ンの故障をエンジン音の異常として直ちに検出判別し、
エンジンが重破損を起しで低い周波数域の異常音圧を生
したときに、これを検出判別してエンジンを速やかに停
止させることにより、大きい故障への発展を確実に防止
する事かでと、また、エンジンが軽破損を起して高い周
波数域の異常音圧を生したとぎに、これを検出判別し、
警報を発してエンジンに軽破損が生じた事を１′名・μ
・１−ろととも：ニエンノ／を運転ざ・ぜ続けて作置を
Ｋ” ｂ： ｌ遅Ｉ ｌ１ｔｌｌ’ｉさぜる！１１なく
作業かひと段落−バまで−１１−常に作業し叙：げる事
かで゛きる。<Effects> As explained above, according to the method of the present invention, an unexpected location where a sensor cannot be installed or an engine failure during development can be immediately detected and determined as an abnormal engine sound.
When the engine is severely damaged and produces abnormal sound pressure in the low frequency range, by detecting and determining this and promptly stopping the engine, it is possible to reliably prevent the development of a major failure. In addition, when the engine causes slight damage and produces abnormal sound pressure in a high frequency range, this is detected and determined,
An alarm was issued and 1 person/μ was found to have caused minor damage to the engine.
・1-Rototomo: Driving Nienno/, keep on working, K" b: I'm slow, I'll stir! 11- Work without a single paragraph-Ba-11- Constantly work and write: There are many things that can be done.
しから、本発明ではタト乱騒音をエンクローツヤ−でカ
ットするうえ、エンジン音をエンクローツヤー内にこも
らせて高エネルギ゛−化し、この高エネルギーのエンジ
ンＨ’ｆのみを集音して判別づ−るので、故障（二付う
異常ｔ；１を高感度で検出判別することか〔き、故１ｉ
ｉｃｉの］■１１期発見か【げ能となっている。Therefore, in the present invention, in addition to cutting the noise disturbance with the enclosure gloss, the engine sound is muffled within the enclosure gloss to make it high energy, and only this high energy engine H'f is collected and discriminated. - Therefore, it is possible to detect and discriminate a failure (anomaly t; 1 with 2) with high sensitivity.
ici's]■Is it the discovery of the 11th period?[It has become Geno.
・１０図面の簡ｉ’ｌｉな説明
第１図は本発明方法の天施に使用する故障検出装置の概
略を示す７０７・り図、第２図はエンジンｊ′Ｘの周波
数スベク１う１．を示す線図て゛ある。-10 Brief explanation of the drawings Fig. 1 is a diagram 707 showing an outline of the failure detection device used in the method of the present invention, and Fig. 2 is a diagram showing the frequency deviation of the engine j'X. There is a diagram showing this.
２ エンジン、 ；（・エンクローツヤ〜、３Ｊ
エンジン異常警報装置、 １０・“？イクロ７才ン、
］１・ フィルター。2 Engine, ;(・Encrow gloss ~, 3J
Engine abnormality warning system, 10.
]1. Filter.
■ ４．１ｎ四叱■ 4.1n four scoldings
Claims (1)
集音マイクロフォン１０を取付け、集めたエンジン音を
複数種の周波数域のフイルター１１にかけ、各フイルタ
ー１１で抽出された音波の音圧が夫々に対して予め設定
した所定レベル以上の異常音圧に達したことを判別して
、異つた種類の安全処理用信号を出すようにし、低い周
波数域の異常音圧を判別した場合には、エンジン停止信
号を発してエンジンを停止させ、高い周波数域の異常音
圧を判別した場合には、エンジン異常警報信号を発して
、エンジン異常警報装置９を作動させるとともに、エン
ジンの運転を維持させることを特徴とするエンジンの故
障検出方法1. A sound collecting microphone 10 is installed inside the enclosure 3 that houses the engine 2, and the collected engine sound is applied to filters 11 in multiple frequency ranges, so that the sound pressure of the sound waves extracted by each filter 11 is It determines when abnormal sound pressure has reached a preset level or higher and issues a different type of safety processing signal, and when it determines abnormal sound pressure in a low frequency range, it issues an engine stop signal. If abnormal sound pressure in a high frequency range is detected, an engine abnormality warning signal is generated, an engine abnormality warning device 9 is activated, and the engine is maintained in operation. Engine failure detection method
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13557584A JPS6114432A (en) | 1984-06-29 | 1984-06-29 | Engine fault detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13557584A JPS6114432A (en) | 1984-06-29 | 1984-06-29 | Engine fault detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6114432A true JPS6114432A (en) | 1986-01-22 |
Family
ID=15155019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13557584A Pending JPS6114432A (en) | 1984-06-29 | 1984-06-29 | Engine fault detection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114432A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0476942U (en) * | 1990-11-15 | 1992-07-06 | ||
| KR20030037938A (en) * | 2001-11-07 | 2003-05-16 | 현대자동차주식회사 | System for alarm abnormal noise of engine |
| JP2008198450A (en) * | 2007-02-13 | 2008-08-28 | Richell Corp | Operating part cover device |
-
1984
- 1984-06-29 JP JP13557584A patent/JPS6114432A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0476942U (en) * | 1990-11-15 | 1992-07-06 | ||
| KR20030037938A (en) * | 2001-11-07 | 2003-05-16 | 현대자동차주식회사 | System for alarm abnormal noise of engine |
| JP2008198450A (en) * | 2007-02-13 | 2008-08-28 | Richell Corp | Operating part cover device |
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