JPH0592680U - Internal combustion engine cylinder pressure detection device - Google Patents
Internal combustion engine cylinder pressure detection deviceInfo
- Publication number
- JPH0592680U JPH0592680U JP3887292U JP3887292U JPH0592680U JP H0592680 U JPH0592680 U JP H0592680U JP 3887292 U JP3887292 U JP 3887292U JP 3887292 U JP3887292 U JP 3887292U JP H0592680 U JPH0592680 U JP H0592680U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder pressure
- cylinder
- internal combustion
- combustion engine
- pressure
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 title abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 10
- 210000000078 claw Anatomy 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
(57)【要約】
【目的】 本考案の内燃機関筒内圧力検出装置の目的は
ディーゼル機関の筒内圧力を常時検出し監視する装置を
提供することである。
【構成】 本装置はシリンダライナのフランジ部に取付
けられたひずみゲージと、前記ひずみゲージの信号を受
けて筒内圧力に比例したひずみ出力を増巾検出し筒内圧
力を判定する機能と監視機能とを備えたことを特徴とす
る。
(57) [Summary] [Object] An object of the internal combustion engine cylinder pressure detection device of the present invention is to provide a device for constantly detecting and monitoring the cylinder pressure of a diesel engine. [Structure] This device has a strain gauge attached to the flange part of the cylinder liner, and a function to determine the in-cylinder pressure by detecting the amplitude of the strain output proportional to the in-cylinder pressure by receiving the signal from the strain gauge and monitoring function. It is characterized by having and.
Description
【０００１】[0001]
本考案は内燃機関の筒内圧力検出装置に関する。 The present invention relates to a cylinder pressure detecting device for an internal combustion engine.
【０００２】[0002]
ディーゼル機関の運転中の筒内圧力は性能運転時に圧力計で燃焼室内の圧力を 詳細に解析しているもので本考案のように常時筒内圧力を燃焼室外部から検出し 監視装置としたものはない。 The in-cylinder pressure during operation of the diesel engine is a detailed analysis of the pressure in the combustion chamber with a pressure gauge during performance operation.As in the present invention, the in-cylinder pressure is constantly detected from outside the combustion chamber and used as a monitoring device. There is no.
【０００３】[0003]
従来ディーゼル機関の筒内圧力を運転中常時監視できない不具合がある。 本考案の目的は前記不具合を解消し、ディーゼル機関の筒内圧力を運転中常時 検出し監視する装置を提供することである。 Conventionally, there is a problem that the cylinder pressure of a diesel engine cannot be constantly monitored during operation. An object of the present invention is to solve the above problems and provide a device for constantly detecting and monitoring the cylinder pressure of a diesel engine during operation.
【０００４】[0004]
シリンダライナ上部フランジ部の周方向変化とシリンダ内圧力が比例すること を利用するもので前記周方向変化をひずみ信号としてキャッチできる様あらかじ めひずみゲージを貼付けた金属板をシリンダライナのフランジ部に設けた取付溝 にはめこみ設置し、前記ひずみゲージのひずみ信号を増巾検出して筒内圧力を判 定する機能と監視機能とを備えたことを特徴とする。 By utilizing the fact that the circumferential direction change of the cylinder liner upper flange part is proportional to the cylinder internal pressure, a metal plate with a strain gauge is attached to the flange part of the cylinder liner so that the circumferential direction change can be caught as a strain signal. It is characterized in that it is fitted into the provided mounting groove, and has a function of detecting the amplification of the strain signal of the strain gauge to determine the in-cylinder pressure and a monitoring function.
【０００５】[0005]
シリンダライナ上部フランジ部はそのシリンダ内で燃焼したときその圧力に比 例した変化をする。この変化量を検出のため、ひずみゲージを貼り付けた金属板 がシリンダライナのフランジ部に設けられた２本の溝に着脱可能にはめこまれて いる。この検出装置はひずみゲージのひずみ出力信号を常時検出監視する機能を もって居り、前記ひずみ出力信号は筒内圧力に比例するので、筒内圧縮圧力値と 燃焼圧力値を常時把握可能であり、これを判定することにより燃焼の異常を検出 できる。 When the cylinder liner upper flange part burns in the cylinder, it changes relative to its pressure. To detect this amount of change, a metal plate to which a strain gauge is attached is detachably fitted into two grooves provided on the flange of the cylinder liner. This detector has the function of constantly detecting and monitoring the strain output signal of the strain gauge.Since the strain output signal is proportional to the in-cylinder pressure, the in-cylinder compression pressure value and the combustion pressure value can be constantly grasped. It is possible to detect the combustion abnormality by judging.
【０００６】[0006]
実施例を図１〜３によって説明する。 図１は実施例の全体構成図、図２は筒内圧力検出用金属板とシリンダライナの フランジ部の図、（ａ）はシリンダライナの図、（ｂ）はシリンダライナフラン ジ部の図、（ｃ）は筒内圧力検出用金属板の図である。図３は筒内圧力波形と監 視ボードの図、（ａ）は筒内圧力の線図、（ｂ）は監視ボードの図である。 実施例はディーゼル機関の運転中の筒内圧力を常時検知し常時機関状態を把握 する目的の装置で、ディーゼル機関の燃焼状態監視に使用する。本考案の筒内圧 力検出装置は機関組立後に燃焼室外周部に容易に装着でき、全シリンダの筒内圧 を各シリンダ同時に把握可能である。筒内圧力検出部はシリンダライナ上部フラ ンジ部に設ける。前記フランジ部の円周部に取付溝を設け前記溝にひずみゲージ を貼付けた金属板をはさみ込む。 An example will be described with reference to FIGS. FIG. 1 is an overall configuration diagram of an embodiment, FIG. 2 is a diagram of a metal plate for in-cylinder pressure detection and a flange portion of a cylinder liner, (a) is a diagram of a cylinder liner, (b) is a diagram of a cylinder liner flange portion, (C) is a figure of a metal plate for cylinder pressure detection. FIG. 3 is a diagram of the in-cylinder pressure waveform and the monitoring board, (a) is a diagram of the in-cylinder pressure, and (b) is a diagram of the monitoring board. The embodiment is a device for the purpose of constantly detecting the cylinder pressure during operation of the diesel engine to constantly grasp the engine state, and is used for monitoring the combustion state of the diesel engine. The in-cylinder pressure detection device of the present invention can be easily mounted on the outer peripheral portion of the combustion chamber after the engine is assembled, and the in-cylinder pressures of all cylinders can be grasped simultaneously for each cylinder. The in-cylinder pressure detector is installed in the upper flange of the cylinder liner. A mounting groove is provided in the circumferential portion of the flange portion, and a metal plate having a strain gauge attached thereto is inserted into the groove.
【０００７】 前記はさみ込み部は金属板が容易に着脱できるように加工製作されている。燃 焼圧力に比例した信号を取り出すためひずみゲージを貼り付けた前記金属板から のひずみ出力信号を検出し、筒内圧力判定機能と監視機能を持たせたことを特徴 とする。 図において１はディーゼル機関、２は発電機でディーゼル機関１に連結されて いる。３はシリンダライナフランジ部、４は筒内圧力検出用金属板でシリンダラ イナフランジ部３の外周に添う円弧をなし両端に爪が設けられている。５はひず み増巾器波形整形器でひずみゲージに接続されている。６は各シリンダ別筒内圧 力監視ボードでひずみ増巾器波形整形器５に接続されている。７はシリンダライ ナである。９は金属板はめ込み溝でシリンダライナのフランジ部３の外周にシリ ンダライナ７の軸方向に設けられた２本の溝である。８はひずみゲージで筒内圧 力検出用金属板４の外側表面に円周方向に貼り付けられている。前記筒内圧力検 出用金属板４は両端の爪を介してはめ込み溝９にはめ込まれて固定される。１２ は筒内圧力波形で各シリンダからのひずみ出力信号の波形を整形したものである 。１３は表示板である。１４は筒内圧力ＬＥＤ表示で表示板１３上に示されてい る。（ａ）（ｂ）…（ｆ）…（ｌ）はシリンダ符号で筒内圧力ＬＥＤ表示１４に おけるシリンダの符号である。The sandwiching portion is processed and manufactured so that the metal plate can be easily attached and detached. In order to extract a signal proportional to the burning pressure, a strain output signal from the metal plate attached with a strain gauge is detected, and a cylinder pressure determination function and a monitoring function are provided. In the figure, 1 is a diesel engine, and 2 is a generator connected to the diesel engine 1. Reference numeral 3 is a cylinder liner flange portion, and 4 is a metal plate for in-cylinder pressure detection, which has an arc along the outer circumference of the cylinder liner flange portion 3 and is provided with claws at both ends. Numeral 5 is a strain amplifier waveform shaper and is connected to the strain gauge. Reference numeral 6 is a cylinder pressure monitoring board for each cylinder, which is connected to the strain amplifier waveform shaper 5. 7 is a cylinder liner. Reference numeral 9 denotes a metal plate fitting groove, which is two grooves provided on the outer periphery of the flange portion 3 of the cylinder liner in the axial direction of the cylinder liner 7. Reference numeral 8 denotes a strain gauge, which is circumferentially attached to the outer surface of the in-cylinder pressure detection metal plate 4. The in-cylinder pressure detection metal plate 4 is fitted and fixed in the fitting groove 9 via the claws at both ends. Reference numeral 12 is a cylinder pressure waveform obtained by shaping the waveform of the strain output signal from each cylinder. Reference numeral 13 is a display plate. Reference numeral 14 is an in-cylinder pressure LED display and is shown on the display plate 13. (A) (b) ... (f) ... (l) are cylinder codes and are cylinder codes in the cylinder pressure LED display 14.
【０００８】 前記実施例の作用を説明する。 機関１が運転されるとシリンダライナ７内で空気の圧縮、燃料噴射が行われ燃 焼するので筒内圧力が変化し、前記圧力に比例してシリンダライナフランジ部が 変形する。これにしたがって筒内圧力検出用金属板４が変形し、それによるひず みゲージ８のひずみ出力信号をひずみ増巾器波形整形器５に伝えて増巾波形整形 すると、筒内圧力波形１２が得られる。筒内圧力波形１２の波の高さ（圧力）最 大圧力値がシリンダ毎に表示板１３上に筒内圧力ＬＥＤ表示１４の（ａ）（ｂ） （ｃ）……（ｌ）として表示される。前記筒内圧力をシリンダ毎に比較し表示す ることにより燃焼状況監視が可能となる。 各シリンダの圧力が正常の範囲を示していれば異常なしとし正常な範囲を外れ れば異常ありとされる。The operation of the above embodiment will be described. When the engine 1 is operated, air is compressed and fuel is injected and burned in the cylinder liner 7, so that the cylinder pressure changes and the cylinder liner flange portion deforms in proportion to the pressure. In accordance with this, the in-cylinder pressure detecting metal plate 4 is deformed, and the strain output signal of the strain gauge 8 due to the deformation is transmitted to the strain-amplifier waveform shaper 5 and the intensifying waveform is shaped. can get. The wave height (pressure) maximum pressure value of the in-cylinder pressure waveform 12 is displayed for each cylinder on the display plate 13 as (a), (b), (c), ... (l) of the in-cylinder pressure LED display 14. It Combustion status can be monitored by comparing and displaying the in-cylinder pressure for each cylinder. If the pressure in each cylinder is within the normal range, it is considered to be normal, and if it is out of the normal range, there is an error.
【０００９】[0009]
本考案の装置は前記のとおり構成され機関内部に検出器を埋込む必要がなく又 筒内圧力を常時把握できる。従って前記ひずみ出力信号を常時監視しておれば機 関の燃焼状況の把握が可能で機関故障診断装置としての機能を持つものである。 よって本考案はディーゼル機関の筒内圧力を常時検出し監視する装置を提供で きる。 The device of the present invention is constructed as described above, and it is not necessary to embed a detector inside the engine, and the pressure inside the cylinder can be constantly grasped. Therefore, if the strain output signal is constantly monitored, the combustion state of the engine can be grasped and it has a function as an engine failure diagnosis device. Therefore, the present invention can provide a device for constantly detecting and monitoring the cylinder pressure of a diesel engine.
【図１】本考案の実施例の全体構成図。FIG. 1 is an overall configuration diagram of an embodiment of the present invention.
【図２】実施例の筒内圧力検出部と筒内圧力検出用金属
板の図。FIG. 2 is a diagram of an in-cylinder pressure detection unit and an in-cylinder pressure detection metal plate according to the embodiment.
【図３】実施例の筒内圧力波形と監視ボードの表示図。FIG. 3 is a display diagram of a cylinder pressure waveform and a monitoring board according to the embodiment.
１…ディーゼル機関、３…シリンダライナのフランジ
部、４…筒内圧力検出用金属板、５…ひずみ増巾機波形
整形器、６…筒内圧力監視ボード、７…シリンダライ
ナ、８…ひずみゲージ、９…金属板はめ込み溝、１２…
筒内圧力波形、１３…表示板、１４…筒内圧力ＬＥＤ表
示。DESCRIPTION OF SYMBOLS 1 ... Diesel engine, 3 ... Cylinder liner flange, 4 ... In-cylinder pressure detection metal plate, 5 ... Strain amplifier waveform shaper, 6 ... In-cylinder pressure monitoring board, 7 ... Cylinder liner, 8 ... Strain gauge , 9 ... Metal plate fitting groove, 12 ...
In-cylinder pressure waveform, 13 ... Display plate, 14 ... In-cylinder pressure LED display.
Claims (1)
を目的とした装置において、シリンダライナのフランジ
部に取付けられたひずみゲージと、前記ひずみゲージの
信号を受けて筒内圧力に比例したひずみ出力を増巾検出
し筒内圧力を判定する機能と監視機能とを備えたことを
特徴とする内燃機関筒内圧力検出装置。1. A device for detecting and monitoring the in-cylinder pressure of an internal combustion engine, wherein a strain gauge attached to a flange portion of a cylinder liner and a signal from the strain gauge are proportional to the in-cylinder pressure. An in-cylinder pressure detecting device for an internal combustion engine, which is provided with a function of detecting an increase in strain output to determine an in-cylinder pressure and a monitoring function.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3887292U JPH0592680U (en) | 1992-05-15 | 1992-05-15 | Internal combustion engine cylinder pressure detection device |
| JP2446693U JPH0729436U (en) | 1992-05-15 | 1993-04-13 | Internal combustion engine cylinder pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3887292U JPH0592680U (en) | 1992-05-15 | 1992-05-15 | Internal combustion engine cylinder pressure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0592680U true JPH0592680U (en) | 1993-12-17 |
Family
ID=12537309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3887292U Pending JPH0592680U (en) | 1992-05-15 | 1992-05-15 | Internal combustion engine cylinder pressure detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0592680U (en) |
-
1992
- 1992-05-15 JP JP3887292U patent/JPH0592680U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2220473B1 (en) | Method and apparatus for using an accelerometer signal to detect misfiring in an internal combustion engine | |
| CN101652550B (en) | Indicating arrangement and method for determining an engine parameter | |
| US5934256A (en) | Method for detecting irregular combustion processes in a multicylinder diesel internal combustion engine | |
| US5179857A (en) | Monitoring system for cyclically operating machines | |
| US5935189A (en) | System and method for monitoring engine performance characteristics | |
| KR101891477B1 (en) | Combustion analysis apparatus for large-sized low-speed engine and method for determining combustion state of engine using the same | |
| CN101776032A (en) | Engine detonation control device and engine detonation control method | |
| US5369989A (en) | Misfire detection in automobile engine | |
| EP0855588B1 (en) | Normalized misfire detection method | |
| JPS6421226U (en) | ||
| JPH02293639A (en) | Knocking detection system | |
| JPH0729436U (en) | Internal combustion engine cylinder pressure detection device | |
| JP2946126B2 (en) | Internal combustion engine combustion state monitoring device | |
| RU2178158C2 (en) | Internal combustion engine condition diagnosing method | |
| RU2246103C1 (en) | Method of inspection of internal combustion engines | |
| JP2597002B2 (en) | Exhaust valve failure diagnosis method | |
| JPH0749403Y2 (en) | Fault diagnosis system for hydraulically driven exhaust valves | |
| JPH08144837A (en) | Misfire detector | |
| CN214149672U (en) | Pressure detection sensor for automobile engine cylinder | |
| JP2005121026A (en) | Apparatus and method for monitoring cylinder pressure | |
| JPS6415937U (en) | ||
| SU1828541A3 (en) | Device for diagnosing internal combustion carburetor engine | |
| JPH04259669A (en) | Combusting condition monitoring device for multi-cylinder internal combustion engine | |
| JPS5967543U (en) | Engine performance abnormality detection device | |
| JPS57106834A (en) | Detection of torque fluctuation of internal combustion engine |