JPH0248050B2 - - Google Patents
Info
- Publication number
- JPH0248050B2 JPH0248050B2 JP57106152A JP10615282A JPH0248050B2 JP H0248050 B2 JPH0248050 B2 JP H0248050B2 JP 57106152 A JP57106152 A JP 57106152A JP 10615282 A JP10615282 A JP 10615282A JP H0248050 B2 JPH0248050 B2 JP H0248050B2
- Authority
- JP
- Japan
- Prior art keywords
- abnormality
- nox concentration
- cylinder
- deviation
- gas temperature
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
- G01M15/104—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using oxygen or lambda-sensors
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Testing Of Engines (AREA)
Description
【発明の詳細な説明】
〔従来の技術〕
デイーゼルエンジンが正常に運転されているか
否かを判別する方法としては、デーゼルエンジン
の排気温度、排気圧力、振動、騒音等を測定し、
この測定結果と標準値との偏差を求める方法があ
る。[Detailed Description of the Invention] [Prior Art] A method for determining whether a diesel engine is operating normally is to measure the exhaust temperature, exhaust pressure, vibration, noise, etc. of the diesel engine.
There is a method to find the deviation between this measurement result and the standard value.
一方、特開昭52−40208号公報および特公昭47
−5855号公報には、エンジンの運転状態を、所定
の設定値に基いて制御する装置が開示されてい
る。 On the other hand, Japanese Patent Publication No. 52-40208 and Japanese Patent Publication No. 47
Japanese Patent Publication No. -5855 discloses a device that controls the operating state of an engine based on predetermined set values.
上述した、デイーゼルエンジンが正常に運転し
ているか否かを判別する従来の方法には、次のよ
うな問題がある。即ち、デイーゼルエンジンで燃
焼状態を悪化させる主な原因は、例えば、燃焼室
の機密の低下、排気弁や給気弁の損傷によるガス
の吹き抜け、燃料噴射ポンプの損耗による噴射圧
力や噴射量の低下および噴射タイミングの遅れ、
燃料噴射弁の損耗による霧化不良等、多岐にわた
る。従来の方法は、正常な運転状態で測定された
基準値との偏差が一定値を超えたときに異常であ
ると判断するものであるから、上述した各種の異
常の原因を判別することはできない。また、検出
された偏差値は、その値が同じであつても、上述
した各種の原因によつて、異常の程度は大きく異
なる。従つて、単に偏差値のみでは、異常の程度
を明確に知ることはできない。更に、エンジンの
燃焼状態は、大気条件、燃料性状等によつて大き
く変動するため、一般に許容偏差値は大きく設定
されている。従つて、従来の方法では、軽微な異
常は判別不能である。
The conventional method described above for determining whether or not a diesel engine is operating normally has the following problems. In other words, the main causes of deterioration in combustion conditions in diesel engines include, for example, a decrease in the confidentiality of the combustion chamber, gas blow-through due to damage to exhaust valves and intake valves, and a decrease in injection pressure and injection amount due to wear and tear on the fuel injection pump. and delayed injection timing;
There are a wide variety of problems, including poor atomization due to wear and tear on the fuel injector. Conventional methods determine that there is an abnormality when the deviation from the reference value measured under normal operating conditions exceeds a certain value, so it is not possible to determine the causes of the various abnormalities mentioned above. . Further, even if the detected deviation values are the same, the degree of abnormality varies greatly depending on the various causes mentioned above. Therefore, the degree of abnormality cannot be clearly known simply from the deviation value. Furthermore, since the combustion state of an engine varies greatly depending on atmospheric conditions, fuel properties, etc., allowable deviation values are generally set large. Therefore, with conventional methods, minor abnormalities cannot be determined.
特開昭52−40208号公報および特公昭47−5855
号に開示されている技術は、何れも、設定値に対
する測定値の偏差を求め、求められた偏差値に基
いて運転を制御するものであるから、上述したよ
うな、デイーゼルエンジンにおける各種の異常原
因および異常の程度を判別することはできない。 Japanese Patent Publication No. 52-40208 and Japanese Patent Publication No. 47-5855
All of the technologies disclosed in the above issue calculate the deviation of the measured value from the set value and control the operation based on the calculated deviation value. The cause and degree of abnormality cannot be determined.
従つて、この発明の目的は、デイーゼルエンジ
ンにおける、各種の異常の原因およびその程度を
適確に判別することができる、デイーゼルエンジ
ンの異常原因判別方法および装置を提供すること
にある。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method and apparatus for determining the cause of abnormality in a diesel engine, which can accurately determine the cause and degree of various abnormalities in a diesel engine.
この発明の方法は、デイーゼルエンジンにおけ
る複数基のシリンダの各々の出口の排ガス温度お
よびNOx濃度を測定し、
得られた排ガス温度およびNOx濃度の測定値
と、予め求めた排ガス温度およびNOx濃度の基
準値との偏差を各々演算し、得られた排ガス温度
の偏差値、および、NOx濃度の偏差値を、２次
元座標上にベクトル表示し、
ベクトルの方向から異常の原因を判別し、そし
て、ベクトルの長さから異常の程度を検出するこ
とに特徴を有するものである。また、この発明の
装置は、シリンダ出口ガスの温度測定器および
NOx濃度測定器と、前記温度測定器によつて得
られた測定値および前記NOx濃度測定器によつ
て得られた測定値と、基準値との偏差を各々演算
するための演算器と、前記演算器の出力に基づい
て、デイーゼルエンジンの異常原因を判別表示す
る表示手段とを備えたデイーゼルエンジンの異常
原因判別装置としたことに特徴を有するものであ
る。
The method of this invention measures the exhaust gas temperature and NOx concentration at the outlet of each of a plurality of cylinders in a diesel engine, and uses the obtained exhaust gas temperature and NOx concentration measurements and predetermined exhaust gas temperature and NOx concentration standards. The deviation from each value is calculated, the obtained exhaust gas temperature deviation value and NOx concentration deviation value are displayed as vectors on two-dimensional coordinates, the cause of the abnormality is determined from the direction of the vector, and the vector The feature is that the degree of abnormality can be detected from the length of the abnormality. The device of the present invention also includes a cylinder outlet gas temperature measuring device and a cylinder outlet gas temperature measuring device.
a NOx concentration measuring device, a computing unit for calculating the deviations between the measured value obtained by the temperature measuring device, the measured value obtained by the NOx concentration measuring device, and a reference value, respectively; The present invention is characterized by a device for determining the cause of an abnormality in a diesel engine, which includes a display means for distinguishing and displaying the cause of an abnormality in the diesel engine based on the output of the arithmetic unit.
この発明によれば、複数基のシリンダの各々の
出口の排ガス温度と、燃焼状態の変化と極めて密
接に対応して変動するNOx濃度とを、異常原因
の判別のための要因としている。従つて、例え
ば、燃焼室の気密が低下した場合には、NOx濃
度の低下が生じ、ガスの吹き抜けが生じた場合に
は、排ガス温度の上昇、および、NOx濃度の低
下が生じ、噴射量が低下した場合には、排ガス温
度の低下が生じ、噴射タイミングの遅れが生じた
場合には、NOx濃度の低下が生じ、そして、霧
化不良の場合には、排ガス温度の上昇が生ずる。
このように、排ガス温度とNOx濃度とを判別要
因とすることによつて、デイーゼルエンジンの各
種の異常の原因およびその程度を、適確に判別す
ることができる。
According to this invention, the exhaust gas temperature at the outlet of each of the plurality of cylinders and the NOx concentration, which fluctuates in very close correspondence with changes in the combustion state, are used as factors for determining the cause of the abnormality. Therefore, for example, if the airtightness of the combustion chamber decreases, the NOx concentration will decrease, and if gas blow-through occurs, the exhaust gas temperature will increase, the NOx concentration will decrease, and the injection amount will decrease. In the case of a decrease, the exhaust gas temperature decreases, in the case of a delay in injection timing, the NOx concentration decreases, and in the case of poor atomization, the exhaust gas temperature increases.
In this way, by using the exhaust gas temperature and the NOx concentration as the determining factors, it is possible to accurately determine the cause and degree of various abnormalities in the diesel engine.
更に、上述した排ガス温度およびNOx濃度の
偏差値を、２次元座標上にベクトル表示すること
によつて、ベクトルの方向から異常の原因が判別
でき、そして、ベクトルの長さから異常の程度を
検出することができる。 Furthermore, by displaying the above-mentioned deviation values of exhaust gas temperature and NOx concentration as vectors on two-dimensional coordinates, the cause of the abnormality can be determined from the direction of the vector, and the degree of abnormality can be detected from the length of the vector. can do.
以下この発明を実施例とともに図面を参照しな
がら説明する。 The present invention will be described below with reference to embodiments and drawings.
第１図はこの発明にかかる装置の概略構成図で
ある。図において、１は、デイーゼルエンジンの
シリンダ（実際には複数個あるが１つのみ図示し
た。）、２は、シリンダ１に接続した給気集合管、
３は、シリンダ１に接続した排気集合管、４は、
給気弁、５は、排気弁、６は、シリンダ１の排気
側に設けた吸引管、７は、吸引管６に接続した導
管、８は、複数のシリンダの吸引管からの複数の
導管７を順次切換えて後述するNOx濃度測定器
に接続するための切換弁、９は、NOx濃度測定
器、１２は、シリンダ１の出口排気温度を計測す
るための温度センサであり、シリンダ１に取り付
けられている。１３はその増巾器である。１０
は、温度センサ１２によつて得られた測定値およ
びNOx濃度測定器９によつて得られた測定値と、
あらかじめ定められている基準値との偏差を各々
演算するための演算器であり、１１は演算器１０
によつて得られた２つの演算値が許容値を越えた
ときに警報を発する警報器、１４は同２つの演算
値に基づいて後述するような表示を行なうための
表示器である。 FIG. 1 is a schematic diagram of an apparatus according to the present invention. In the figure, 1 is a cylinder of a diesel engine (actually there are multiple cylinders, but only one is shown), 2 is an air intake pipe connected to the cylinder 1,
3 is an exhaust manifold pipe connected to cylinder 1, 4 is
An air supply valve, 5 is an exhaust valve, 6 is a suction pipe provided on the exhaust side of the cylinder 1, 7 is a conduit connected to the suction pipe 6, and 8 is a plurality of conduits 7 from the suction pipes of the plurality of cylinders. 9 is a NOx concentration measuring device, and 12 is a temperature sensor for measuring the exhaust gas temperature at the outlet of the cylinder 1, which is attached to the cylinder 1. ing. 13 is its amplifier. 10
is the measured value obtained by the temperature sensor 12 and the measured value obtained by the NOx concentration measuring device 9,
Calculator 11 is a calculator for calculating each deviation from a predetermined reference value.
An alarm device 14 issues an alarm when the two calculated values obtained by the above exceed a permissible value. Reference numeral 14 is a display device for making a display as described later based on the two calculated values.
以上のような構成によつて、次のようにして異
常原因が判別される。 With the above configuration, the cause of the abnormality is determined as follows.
(1) NOx濃度及びシリンダ出口排気温度は次の
ように計測される。(1) NOx concentration and cylinder outlet exhaust temperature are measured as follows.
(i) NOx濃度
各シリンダ１からの排ガスは、切換弁８に
より順次切換えられて、吸引管６及び導管７
を通つて、NOx濃度測定器９に送られ、こ
こでNOx濃度が測定される。この測定結果
は、演算器１０に送られる。 (i) NOx concentration The exhaust gas from each cylinder 1 is sequentially switched by the switching valve 8 to the suction pipe 6 and the conduit 7.
The NOx concentration is then sent to the NOx concentration measuring device 9, where the NOx concentration is measured. This measurement result is sent to the computing unit 10.
(ii) シリンダ出口排気温度
各シリンダ１からの排ガスの温度は、温度
センサ１２で検知され、温度センサ増幅器１
３で増幅される。その結果は、演算器１０に
送られる。 (ii) Cylinder outlet exhaust temperature The temperature of the exhaust gas from each cylinder 1 is detected by the temperature sensor 12, and the temperature sensor amplifier 1
It is amplified by 3. The result is sent to the computing unit 10.
(2) 演算器１０で、その時点における各シリンダ
１のNOx濃度とシリンダ出口排気温度の偏差
は次のように求められる。(2) The computing unit 10 calculates the deviation between the NOx concentration of each cylinder 1 and the cylinder outlet exhaust temperature at that point in time as follows.
(i) 偏差を求めるための基準値は、シリンダ１
内の状態変化のみに着目し、全シリンダの平
均値又は、任意の１つのシリンダの値をと
る。 (i) The reference value for determining the deviation is cylinder 1.
Focusing only on state changes within the cylinder, the average value for all cylinders or the value for any one cylinder is taken.
このようにすれば、大気温度や大気圧など
の環境状態や機関の運転状態などの影響が排
除できる。 In this way, the influence of environmental conditions such as atmospheric temperature and atmospheric pressure, and engine operating conditions can be eliminated.
(ii) 正常運転状態における各シリンダの偏差を
あらかじめ把握しておき、測定時点での各偏
差を求めるときの補正に利用する。 (ii) The deviation of each cylinder under normal operating conditions is known in advance and used for correction when calculating each deviation at the time of measurement.
(3) 表示器１４には、第２図のような、横軸にシ
リンダ出口排気温度の偏差ΔTei、縦軸にNOx
濃度の偏差ΔNOxiを取つた２次元グラフがあ
り、このグラフにおいて、原点を中心として適
当な間隔で同心円が描かれており、かつ、円周
上を適当な間隔で分割している。この図の２次
元座標上に各シリンダの状態をベクトル表示す
る（これをシリンダ状態図と呼ぶ）。(3) The display 14 shows the deviation ΔTei of the cylinder outlet exhaust temperature on the horizontal axis and NOx on the vertical axis, as shown in Figure 2.
There is a two-dimensional graph of the concentration deviation ΔNOxi, in which concentric circles are drawn at appropriate intervals around the origin, and the circumference is divided at appropriate intervals. The state of each cylinder is expressed as a vector on the two-dimensional coordinates of this diagram (this is called a cylinder state diagram).
(i) すべてのシリンダが正常状態にあれば、当
然各シリンダのNOx濃度及びシリンダ出口
排気温度の偏差は０になり、測定値（状態
点）は原点に位置する。 (i) If all cylinders are in normal condition, the deviation of NOx concentration and cylinder outlet exhaust temperature of each cylinder will naturally be 0, and the measured value (state point) will be located at the origin.
(ii) 今、あるシリンダで何らかの異常が発生す
ると、そのシリンダのNOx濃度とシリンダ
出口排気温度は、他のシリンダのそれとは異
なつた値になり、偏差が生じる。このためシ
リンダ状態図上ではこのシリンダの状態点の
み原点からはずれる。 (ii) If some abnormality occurs in a certain cylinder, the NOx concentration and cylinder outlet exhaust temperature of that cylinder will be different from those of other cylinders, resulting in a deviation. Therefore, on the cylinder state diagram, only the state point of this cylinder deviates from the origin.
(iii) シリンダ内の燃焼によるNOxの発生機構
と、シリンダ出口排気温度の増減機構は互い
に異なつたものである。このため、異常又は
故障の種類及び程度によつてNOx濃度とシ
リンダ出口排気温度の変化の度合は、それぞ
れ異なつたものになる。 (iii) The mechanism for generating NOx due to combustion within the cylinder and the mechanism for increasing and decreasing the exhaust gas temperature at the cylinder outlet are different from each other. Therefore, the degree of change in NOx concentration and cylinder outlet exhaust gas temperature will vary depending on the type and degree of abnormality or failure.
(iv) このため、シリンダ状態図において、原点
からの方向が異常原因を表すことになる。当
然、異常の程度が大きくなれば偏差も大きく
なるから、シリンダ状態図における原点から
の距離が異常の程度を表す。 (iv) Therefore, in the cylinder state diagram, the direction from the origin represents the cause of the abnormality. Naturally, as the degree of abnormality increases, the deviation also increases, so the distance from the origin in the cylinder state diagram represents the degree of abnormality.
(v) ゆえに、シリンダ状態図上の異常Ａ、異常
Ｂ、異常Ｃ、…などの異常原因が把握されて
おれば、機関の異常検知及び異常原因判別が
できたことになる。 (v) Therefore, if the causes of abnormalities such as abnormality A, abnormality B, abnormality C, etc. on the cylinder status diagram are known, the engine abnormality can be detected and the cause of the abnormality can be determined.
(i) 次の供試機関を用い、その３シリンダのうち
の１つのシリンダのみに下記の異常を人為的に
起こし実験を行つた。その結果を第３図に示
す。
(i) Using the following test engine, we conducted an experiment by artificially causing the following abnormality in only one of its three cylinders. The results are shown in FIG.
供試機関：
シリンダ数３、シリンダ径400mm、機関回転
数514rpm、機関出力1950ps
異常条件：
燃料噴射時期を早め、また遅らせる。Test engine: Number of cylinders: 3, cylinder diameter: 400 mm, engine speed: 514 rpm, engine output: 1950 ps Abnormal conditions: Advance and retard fuel injection timing.
燃料量を増大させ、また減少させる。 Increase and decrease the amount of fuel.
排気弁タペツトのクリアランスを増大させ
る。 Increase exhaust valve tappet clearance.
排気弁吹き抜け。 Exhaust valve atrium.
第３図から、以上４条件が明確に区別され、図
示されていることが明らかである。 It is clear from FIG. 3 that the above four conditions are clearly distinguished and illustrated.
以上は、シリンダ出口排気温度とNOx濃度と
の相関を元にしたが、さらにシリンダ内圧力、燃
料噴射圧力などの機関性能特性値を加え、多次元
的に診断を行えば、さらに詳細な診断が行える。
また以上はデイーゼル機関を主に述べているが、
本発明の方法は、ガソリン機関などの内燃機関に
も適用可能である。 The above is based on the correlation between the cylinder outlet exhaust temperature and the NOx concentration, but a more detailed diagnosis can be made by adding engine performance characteristic values such as cylinder pressure and fuel injection pressure and performing a multidimensional diagnosis. I can do it.
Also, although the above has mainly talked about diesel engines,
The method of the invention is also applicable to internal combustion engines such as gasoline engines.
以上述べたように、この発明によれば、デイー
ゼル機関における、各種の異常の原因およびその
程度を適確に判別することができる工業上有用な
効果がもたらされる。
As described above, the present invention brings about the industrially useful effect of being able to accurately determine the cause and degree of various abnormalities in a diesel engine.
第１図はこの発明にかかる装置の概略構成図、
第２図および第３図はシリンダ状態図である。
９……NOx濃度測定器、１０……演算器、１
２……温度センサ、１４……表示器。
FIG. 1 is a schematic configuration diagram of a device according to the present invention;
2 and 3 are cylinder state diagrams. 9... NOx concentration measuring device, 10... Arithmetic unit, 1
2...Temperature sensor, 14...Display device.
Claims (1)
ダの各々の出口の排ガス温度およびNOx濃度を
測定し、 得られた排ガス温度およびNOx濃度の測定値
と、予め求めた排ガス温度およびNOx濃度の基
準値との偏差を各々演算し、得られた排ガス温度
の偏差値、および、NOx濃度の偏差値を、２次
元座標上にベクトル表示し、 ベクトルの方向から異常の原因を判別し、そし
て、ベクトルの長さから異常の程度を検出するこ
とを特徴とする、デイーゼルエンジンの異常原因
判別方法。 ２ シリンダ出口ガスの温度測定器およびNOx
濃度測定器と、 前記温度測定器によつて得られた測定値および
前記NOx濃度測定器によつて得られた測定値と、
基準値との偏差を各々演算するための演算器と、 前記演算器の出口に基づいて、デイーゼルエン
ジンの異常原因を判別表示する表示手段とを備え
たことを特徴とするデイーゼルエンジンの異常原
因判別装置。[Claims] 1. Measure the exhaust gas temperature and NOx concentration at the outlet of each of a plurality of cylinders in a diesel engine, and combine the obtained measured values of the exhaust gas temperature and NOx concentration with the previously determined exhaust gas temperature and NOx concentration. Calculate each deviation from the standard value, display the obtained exhaust gas temperature deviation value and NOx concentration deviation value as vectors on two-dimensional coordinates, determine the cause of the abnormality from the direction of the vector, and A method for determining the cause of an abnormality in a diesel engine, which is characterized by detecting the degree of abnormality from the length of a vector. 2 Cylinder outlet gas temperature measuring device and NOx
a concentration measuring device; a measured value obtained by the temperature measuring device and a measured value obtained by the NOx concentration measuring device;
A method for determining the cause of an abnormality in a diesel engine, comprising: a calculator for calculating each deviation from a reference value; and a display means for determining and displaying the cause of the abnormality in the diesel engine based on the output of the calculator. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10615282A JPS58223034A (en) | 1982-06-22 | 1982-06-22 | Diesel engine abnormality cause determination method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10615282A JPS58223034A (en) | 1982-06-22 | 1982-06-22 | Diesel engine abnormality cause determination method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223034A JPS58223034A (en) | 1983-12-24 |
| JPH0248050B2 true JPH0248050B2 (en) | 1990-10-23 |
Family
ID=14426349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10615282A Granted JPS58223034A (en) | 1982-06-22 | 1982-06-22 | Diesel engine abnormality cause determination method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223034A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI82142C (en) * | 1987-10-23 | 1991-01-10 | Wartsilae Diesel International | FOERFARANDE FOER TESTNING AV OLIKA MEDIER OCH DIESELMOTOR FOER TILLAEMPNING AV FOERFARANDET. |
| US8365078B2 (en) | 2004-01-08 | 2013-01-29 | International Business Machines Corporation | Method for multidimensional visual correlation of systems management data |
| EP1704482A2 (en) * | 2004-01-08 | 2006-09-27 | International Business Machines Corporation | Method for multidimensional visual correlation of systems management data |
| US7401142B2 (en) | 2004-01-08 | 2008-07-15 | International Business Machines Corporation | Method for multidimensional visual correlation of systems management data displaying orchesteration action threshold |
| AT506085B1 (en) * | 2008-04-07 | 2009-06-15 | Ge Jenbacher Gmbh & Co Ohg | Internal combustion engine |
| CN102733951A (en) * | 2012-06-29 | 2012-10-17 | 中国北车集团大连机车车辆有限公司 | Flameout monitoring and alarming method for first cylinder of diesel engine |
| JP6502735B2 (en) * | 2015-04-16 | 2019-04-17 | 安富 祐二 | Emergency generator testing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5240208A (en) * | 1975-09-26 | 1977-03-29 | Nippon Denso Co Ltd | Engine condition setting device |
| JPS5318424U (en) * | 1976-07-26 | 1978-02-16 |
-
1982
- 1982-06-22 JP JP10615282A patent/JPS58223034A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223034A (en) | 1983-12-24 |
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