WO2016151810A1 - Dispositif de sortie, procédé de sortie, programme et support d'enregistrement - Google Patents

Dispositif de sortie, procédé de sortie, programme et support d'enregistrement Download PDF

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Publication number
WO2016151810A1
WO2016151810A1 PCT/JP2015/059188 JP2015059188W WO2016151810A1 WO 2016151810 A1 WO2016151810 A1 WO 2016151810A1 JP 2015059188 W JP2015059188 W JP 2015059188W WO 2016151810 A1 WO2016151810 A1 WO 2016151810A1
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WIPO (PCT)
Prior art keywords
supercharger
data
output
load
main engine
Prior art date
Application number
PCT/JP2015/059188
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English (en)
Japanese (ja)
Inventor
隆志 三島
将史 植松
成洋 柴岡
中谷　博司
智生 大石
正幸 小塚
Original Assignee
日本郵船株式会社
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 日本郵船株式会社 filed Critical 日本郵船株式会社
Priority to JP2016505349A priority Critical patent/JP6106802B2/ja
Priority to PCT/JP2015/059188 priority patent/WO2016151810A1/fr
Publication of WO2016151810A1 publication Critical patent/WO2016151810A1/fr

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    • 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
    • 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
    • G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters

Definitions

  • This invention relates to the technique for grasping
  • Patent Document 1 calculates the operation operating point of the turbocharger based on the detected value obtained by detecting the operation state of the diesel engine and the turbocharger by a sensor, and the compressor characteristics and the motion operating point based on the design value of the turbocharger. By displaying, it is disclosed to monitor the state of fouling due to aging of the turbocharger.
  • the supercharger intake air temperature, the engine scavenging pressure, the supercharger turbine inlet exhaust gas pressure, the supercharger turbine inlet exhaust gas temperature, and the supercharger turbine outlet based on the detection value of the sensor.
  • the total efficiency of the turbocharger is calculated by calculating using the exhaust gas pressure.
  • an object of the present invention is to make it possible to accurately grasp the aging deterioration of a supercharger even when the data to be referred to is less than in the past.
  • the present invention acquires, for each of a plurality of time points, data on the scavenging pressure of the pressurized gas sent from the supercharger to the main engine, the exhaust temperature of the supercharger, and the load on the main engine.
  • an output device comprising: an acquisition unit configured to output; and an output unit configured to output a change over time of the scavenging pressure and the exhaust temperature according to a load within a predetermined range based on the acquired data.
  • the output means outputs data indicating aging deterioration of the supercharger based on the data during a period in which the scavenging pressure is decreased and the exhaust temperature is increased. Also good.
  • the acquisition unit may further acquire data of a disturbance element that acts on the supercharger, and the output unit may reflect the data of the disturbance element in an output. .
  • the acquisition unit may further acquire fuel consumption data of the main engine, and the output unit may reflect the fuel consumption data in the output.
  • the acquisition unit acquires data relating to the main engine and the supercharger mounted on a ship, and the acquisition unit further acquires weather or sea state data during the navigation of the ship.
  • the said output means is good also as a structure of not reflecting the data acquired when the said weather or the sea state data satisfy
  • the present invention relates to each of a plurality of time points, acquiring the scavenging pressure of the pressurized gas sent from the supercharger to the main engine, the exhaust gas temperature of the supercharger, and the load of the main engine, and acquiring And outputting a change with time of the scavenging pressure and the exhaust temperature according to a load within a predetermined range based on the data.
  • the present invention is a step of acquiring data on the scavenging pressure of the pressurized gas sent from the supercharger to the main engine, the exhaust temperature of the supercharger, and the load on the main engine for each of a plurality of time points. And a program for executing a step of outputting a change with time of the scavenging pressure and the exhaust gas temperature according to a load within a predetermined range based on the acquired data.
  • the present invention is a step of acquiring data on the scavenging pressure of the pressurized gas sent from the supercharger to the main engine, the exhaust temperature of the supercharger, and the load on the main engine for each of a plurality of time points. And a computer-readable recording of a program for executing the step of outputting the scavenging pressure and the exhaust gas temperature over time according to a load within a predetermined range based on the acquired data Recording medium is provided.
  • the scavenging pressure of the pressurized gas sent from the supercharger to the main engine and the change over time of the exhaust temperature of the supercharger according to the load within a predetermined range are output. Therefore, according to the present invention, it is possible to accurately grasp the aging deterioration of the supercharger even when the data to be referred to is smaller than in the past.
  • the schematic diagram of the ship which concerns on one Embodiment of this invention The figure which shows the structure of the supercharger which concerns on the embodiment, and its periphery. 2 is an exemplary block diagram showing the configuration of a computer apparatus according to the embodiment.
  • FIG. The figure which shows the structural example of the table which concerns on the same embodiment. 7 is a flowchart showing processing executed by the computer device according to the embodiment.
  • the graph which shows an example of the time-dependent change of the scavenging pressure of a supercharger, and exhaust temperature.
  • FIG. 1 shows a schematic diagram of a ship according to an embodiment of the present invention.
  • the ship 1 is, for example, a container ship, and includes a hull 100 that is a main body of the ship 1, a power generation unit 200, a computer device 300, and a measurement device 400.
  • the power generation unit 200 is provided in the hull 100 and generates power for rotating a propeller provided on the stern side.
  • the power generation unit 200 of the present embodiment includes a main engine 210 that is an internal combustion engine such as a diesel engine, a supercharger 220 that draws pressurized gas into the main engine 210 and is driven by exhaust gas from the main engine 210, and a main engine 210.
  • a load acquisition unit 230 that acquires data on the load (main machine load).
  • the load of the main engine means a work amount per unit time of the main engine (internal combustion engine).
  • the power generation unit 200 also has a function as a data logger.
  • the computer device 300 is a computer device provided in the hull 100 and disposed in a residential area 310 where sailors are active.
  • the measuring device 400 includes, for example, an anemometer, a barometer, a thermometer, a rain gauge, and a wave height meter, and identifies weather and sea conditions (hereinafter referred to as “meteorological sea conditions”) during the navigation of the ship 1. Measure the data. In addition, the measuring device 400 measures data for specifying information (navigation information) related to the voyage from the departure point of the ship 1 to the destination, such as the average ship speed, the cruising distance, and the fuel consumption.
  • FIG. 2 is a diagram showing a configuration of the supercharger 220 and its surroundings.
  • the turbine 221 rotates the compressor (compressor) 222 using the energy of the exhaust gas from the main engine 210.
  • the compressor 222 is rotationally driven by the turbine 221, it sucks and pressurizes outside air.
  • the scavenging receiver 223 is arranged immediately before the main unit 210, and when pressurized gas is supplied from the compressor 222, the scavenging receiver 223 temporarily stores the pressurized gas.
  • the scavenging receiver 223 sends the stored pressurized gas into the cylinder of the main unit 210.
  • the main engine 210 burns in the cylinder based on the pressurized gas supplied from the scavenging receiver 223, converts heat energy into kinetic energy, and generates power.
  • the exhaust receiver 224 is disposed immediately after the main unit 210 and temporarily stores the exhaust gas generated by the combustion of the main unit 210.
  • the exhaust receiver 224 sends exhaust gas into the exhaust pipe 225.
  • the exhaust gas is supplied from the exhaust pipe 225 to the turbine 221, drives the turbine 221, and is discarded outside the supercharger 220.
  • the supercharger 220 further includes an outside air temperature sensor 231A disposed in the vicinity of the outside air intake port of the compressor 222 (ie, the inlet of the supercharger 220), and a scavenging pressure sensor 231B disposed in the scavenging receiver 223. , And an exhaust temperature sensor 231C disposed in the exhaust pipe 225.
  • the outside air temperature sensor 231A is a sensor that measures the temperature of outside air (that is, the outside air temperature) sucked by the compressor 222, and outputs data indicating the measurement result of the outside air temperature.
  • the scavenging pressure sensor 231B is a sensor that measures the scavenging pressure of the pressurized gas sent from the supercharger 220 to the main engine 210, and outputs data indicating the scavenging pressure measurement result.
  • the exhaust temperature sensor 231C is a sensor that measures the exhaust temperature of the supercharger 220, and outputs data indicating the measurement result of the exhaust temperature.
  • the scavenging pressure sensor 231 ⁇ / b> B only needs to measure the scavenging pressure of the pressurized gas sent from the supercharger 220 to the main unit 210, and may be disposed in a conduction pipe that connects the scavenging receiver 223 and the main unit 210, for example. .
  • the exhaust temperature sensor 231 ⁇ / b> C only needs to measure the exhaust temperature of the supercharger 220, and may be disposed in the exhaust receiver 224, for example.
  • the load acquisition unit 230 acquires scavenging pressure data of the supercharger 220 as load data of the main unit 210. Since various data (including the scavenging pressure) of the main engine 210 are measured and recorded during the trial operation when the ship 1 is built, the approximate load on the main engine 210 is estimated by comparison with the scavenging pressure during the trial operation. Is possible.
  • the scavenging pressure is an index of the load on the main engine 210. Then, the load acquisition unit 230 outputs the acquired (estimated) load data.
  • FIG. 3 is a block diagram illustrating a configuration of the computer apparatus 300.
  • the computer device 300 functions as an output device that outputs data indicating the deterioration of the supercharger 220 over time.
  • the computer apparatus 300 includes a control unit 301, a storage unit 302, a display unit 303, an input / output unit 304, a communication unit 305, and an operation unit 306.
  • the control unit 301 is a microcomputer having a central processing unit (CPU), a read only memory (ROM), and a random access memory (RAM) as an arithmetic processing unit.
  • the CPU controls each unit of the computer apparatus 300 by reading the program stored in the ROM or the storage unit 302 into the RAM and executing the program.
  • the control unit 301 realizes functions corresponding to the acquisition unit 301A and the output unit 301B.
  • the acquisition unit 301 ⁇ / b> A is a unit that acquires data from the power generation unit 200 and the measurement device 400.
  • the acquisition unit 301A acquires the scavenging pressure of the supercharger 220, the exhaust temperature of the supercharger 220, the outside air temperature, and the load of the main unit 210 for each of a plurality of time points.
  • the acquisition unit 301 ⁇ / b> A acquires data obtained by measuring disturbance elements acting on the supercharger 220 and fuel consumption of the main engine 210.
  • the output unit 301B Based on the data acquired by the acquisition unit 301A, the output unit 301B outputs changes over time in the scavenging pressure and the exhaust temperature according to the load within a predetermined range.
  • the output unit 301 ⁇ / b> B may reflect the disturbance element acting on the supercharger 220 and the fuel consumption data of the main engine 210 in the output.
  • the storage unit 302 is a hard disk device, for example, and stores a program for operating the computer device 300 and a table T.
  • the table T is a table in which scavenging pressure, exhaust temperature, outside air temperature, and date / time data indicating the date / time of measurement or acquisition thereof are stored in association with each other for each load zone of the main engine 210.
  • the load band in the table T indicates each range when the entire range of the load of the main unit 210 is divided into a plurality of stages for each predetermined range (for example, every 10%). For example, when the maximum load value is set to 100% and divided every 10%, each range divided every 10% is set as a load band.
  • the display unit 303 is a liquid crystal display, for example, and displays various types of information.
  • the input / output unit 304 is an interface for inputting / outputting data between the power generation unit 200 and the measurement device 400.
  • the input / output unit 304 receives load data from the load acquisition unit 230, data from the outside air temperature sensor 231 ⁇ / b> A, the scavenging pressure sensor 231 ⁇ / b> B, and the exhaust gas temperature sensor 231 ⁇ / b> C, and measurement data indicating measurement results from the measurement device 400.
  • the communication unit 305 includes, for example, a communication circuit and an antenna for connecting to a network, and communicates with a computer device installed on land via the network.
  • the operation unit 306 includes, for example, a keyboard and a mouse, and receives an operation performed by an operator (here, a sailor).
  • FIG. 5 is a flowchart illustrating processing executed by the computer apparatus 300.
  • the computer device 300 executes the processing shown in FIG. 5 periodically or in response to an instruction from a sailor.
  • the control unit 301 of the computer device 300 acquires measurement data from the measurement device 400 (step S1).
  • the control unit 301 determines whether to collect data from the power generation unit 200 (step S2).
  • the control unit 301 specifies the weather and sea conditions at the current position based on the measurement data from the measurement device 400.
  • the control unit 301 determines that data is collected from the power generation unit 200 when it is not stormy weather (for example, during fine weather), and determines that data is not collected from the power generation unit 200 during stormy weather.
  • the control unit 301 may acquire data on the weather and sea conditions via the communication unit 305 and specify the weather and sea conditions at the current position.
  • the control unit 301 receives each data from the outside air temperature sensor 231A, the scavenging pressure sensor 231B, and the exhaust temperature sensor 231C via the input / output unit 304. 200 (step S3).
  • the control unit 301 acquires load data of the main unit 210 from the power generation unit 200 via the input / output unit 304 (step S4).
  • the control unit 301 associates each data of the scavenging pressure, the exhaust temperature and the outside air temperature acquired in step S3, and date and time data with a load band including the load indicated by the load data acquired in step S4.
  • Store in the table T step S5). In the table T, for example, data collected every several months or years is stored.
  • the control unit 301 outputs changes over time in the scavenging pressure and the exhaust temperature for each load zone of the main engine 210 based on the table T (step S6).
  • FIG. 6 is a graph showing an example of changes over time in the scavenging pressure and the exhaust temperature of the pressurized gas sent from the supercharger 220 to the main engine 210 in a certain load zone.
  • the horizontal axis represents time
  • the vertical axis represents scavenging pressure or exhaust temperature.
  • FIG. 6 shows the moving average of the scavenging pressure and the exhaust temperature, that is, the average value for each unit period.
  • the change with time of the scavenging pressure and the exhaust temperature is small. That is, when the main engine 210 is in a certain load zone, the scavenging pressure and the exhaust temperature are maintained in a substantially constant state.
  • the degree of aging of the supercharger 220 is small, and it is estimated that the supercharger 220 is operating normally.
  • the scavenging pressure decreases while the exhaust gas temperature increases.
  • the degree of aging of the supercharger 220 is greater than the period I.
  • the energy conversion efficiency of the main engine 210 is deteriorated when the scavenging pressure decreases and the exhaust temperature increases during a certain load zone.
  • the control unit 301 outputs, to the display unit 303, an image that visually represents changes over time in the scavenging pressure and the exhaust temperature, for example, display data for displaying the graph shown in FIG.
  • this display data is data for displaying a graph showing a change in exhaust temperature over time and a graph sharing a time axis with the graph and showing a change in scavenging pressure over time.
  • the sailor who saw the display content of the display unit 303 grasps the degree of deterioration of the supercharger 220 over time, and whether or not maintenance (for example, cleaning or replacement of parts) of the supercharger 220 is necessary or not.
  • the time can be judged. For example, as in the period II, a sailor who confirms that the scavenging pressure is decreasing and the exhaust temperature is increasing determines that maintenance of the supercharger 220 should be performed.
  • the control unit 301 may output data indicating the degree of aging deterioration of the supercharger 220 based on data during a period in which the scavenging pressure has decreased and the exhaust gas temperature has increased.
  • this data there is data (hereinafter referred to as “notification data”) for notifying the degree of deterioration over time.
  • the notification data is data for reporting the degree of aging deterioration of the supercharger 220 by, for example, a method that can be perceived by a human.
  • the notification method there are display on the display unit 303, output of an alarm sound, lighting of a lamp, and the like.
  • the notification data is output, for example, when a condition for performing maintenance of the supercharger 220 is satisfied.
  • the output condition of the notification data will be described.
  • the control unit 301 is based on the condition that the amount of decrease in the scavenging pressure in a predetermined period is equal to or greater than a threshold and the amount of increase in the exhaust temperature in the predetermined period is equal to or greater than the threshold.
  • Notification data is output.
  • the output condition of the notification data may be the same regardless of the type of the ship or the supercharger, or may be set for each type of the ship or the supercharger.
  • the control unit 301 may output notification data when the output condition is satisfied in any one load band, or output the notification data when the output condition is satisfied in two or more load bands. May be.
  • the output destination of the notification data is not limited to the device arranged in the ship 1.
  • the control unit 301 may transmit notification data to a computer device installed on land such as a dock via the communication unit 305.
  • the control unit 301 reflects external temperature data in the output as a disturbance factor.
  • the control unit 301 may use, as a notification data output condition, that the increase amount of the exhaust temperature is larger than the increase amount of the outside air temperature during the period in which the scavenging pressure is decreased.
  • the control unit 301 may correct the exhaust temperature based on the outside air temperature data, and output based on the corrected exhaust temperature.
  • the correction algorithm is not particularly limited. For example, correction is performed by subtracting a value obtained by multiplying the outside air temperature by a predetermined coefficient from the exhaust temperature. Thereby, the influence on the output by the fluctuation
  • control unit 301 may acquire disturbance element data and reflect it in the output of step S6. Further, the method of reflecting the disturbance element data is not limited to the example described here. For example, when outputting the display data described above, the control unit 301 may output display data for displaying a temporal change in the outside air temperature in addition to the scavenging pressure and the exhaust temperature.
  • the control unit 301 may acquire fuel consumption data of the main engine 210 and reflect the fuel consumption in the output. For example, the control unit 301, when the scavenging pressure is decreased and the exhaust gas temperature is increased, when the fuel efficiency is equal to or lower than a predetermined value, the control unit 301 generates data for notifying that the fuel efficiency has decreased due to the supercharger 220. When the fuel consumption becomes a predetermined value or less during other periods, data for notifying that there is a cause other than the supercharger 220 is output.
  • the method of reflecting the fuel consumption data on the output in step S6 is not limited to the example described here. For example, when outputting the display data described above, the control unit 301 may output display data for displaying a change in fuel consumption over time in addition to the scavenging pressure and the exhaust temperature.
  • the computer apparatus 300 outputs changes over time in the scavenging pressure and the exhaust temperature for each load band, it becomes possible to more accurately grasp the aging deterioration of the supercharger 220. .
  • the computer device 300 does not reflect the data at the time of the predetermined weather and sea conditions such as stormy weather in the output. It becomes possible to grasp deterioration more accurately.
  • the present invention may be implemented in a form different from the above-described embodiment. Moreover, you may combine each of the modification shown below.
  • the output in step S6 is not limited to the example described in the above embodiment. Various modifications can be made to the output contents, output destination, and output conditions. For example, when the ship 1 includes a plurality of superchargers 220, the control unit 301 stops the supercharger 220 in which the degree of aging of the supercharger 220 is relatively large, and operates the other superchargers 220. You may output the instruction data which instruct
  • the load data of the present application may be physical quantity data indicating the magnitude of the load of the main engine, and is not limited to the scavenging pressure data described in the above-described embodiment. Further, the load data of the present application is not limited to data measured by the supercharger. As the load data of the present application, for example, data such as a main engine load measured by a shaft horsepower meter, a fuel consumption per unit time, and a rotation speed of a turbocharger turbine can be used.
  • the computer apparatus 300 is configured not to collect data in case of stormy weather. Instead, instead of this, the data is collected for each weather or sea condition classified according to a predetermined rule. Based on output. For example, the computer apparatus 300 may perform output based on collected data for each Beaufort representing a wind class. In this case, the computer apparatus 300 does not reflect the data acquired when the meteorological sea state data satisfies the predetermined condition in the output.
  • the output device of this application is not restricted to the example implement
  • the output device of the present application is not limited to a ship, and can be applied to a main body and a mobile body (for example, a vehicle such as an automobile and other vehicles) provided with a supercharger that sucks pressurized gas into the main machine.
  • Each function realized by the control unit 301 of the computer apparatus 300 according to the above-described embodiment may be realized by one or a plurality of hardware circuits, or may be realized by executing one or a plurality of programs. , Or a combination thereof.
  • the program includes a magnetic recording medium (magnetic tape, magnetic disk (HDD (Hard Disk Drive), FD (Flexible Disk)), etc.), optical recording medium (optical disk). Etc.), may be provided in a state stored in a computer-readable recording medium such as a magneto-optical recording medium or a semiconductor memory, or distributed via a network.
  • a computer-readable recording medium such as a magneto-optical recording medium or a semiconductor memory, or distributed via a network.
  • the present invention can also be grasped as an output method.
  • the invention of the present application is not limited to the above-described embodiment, and various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these are also included in the scope of the invention. Absent.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un navire (1) équipé d'une coque (100) de navire, d'un moteur principal (210) qui est un moteur à combustion interne prévu dans la coque (100) de navire, d'un surcompresseur (220) destiné à fournir un gaz sous pression dans le moteur principal (210), d'un capteur de pression d'air de balayage destiné à mesurer la pression d'air de balayage du surcompresseur (220), d'un capteur de température de gaz d'échappement destiné à mesurer la température de gaz d'échappement du surcompresseur (220), d'une unité (230) d'acquisition de charge destinée à acquérir la charge du moteur principal (210) et d'un dispositif informatique (300) destiné à acquérir des données relatives à la pression d'air de balayage du surcompresseur (220), à la température de gaz d'échappement du surcompresseur (220) et à la charge du moteur principal (210), au niveau d'une pluralité de points dans le temps et, sur la base des données acquises, à délivrer en sortie le changement au cours du temps dans la température de gaz d'échappement et la pression d'air de balayage en fonction de la charge dans une plage prédéfinie. Par exemple, le dispositif informatique (300) de l'invention délivre en sortie des données indiquant le degré selon lequel le surcompresseur (220) se détériore au fil du temps, sur la base des résultats de mesure d'un intervalle pendant lequel la pression d'air de balayage diminue et la température de gaz d'échappement augmente.
PCT/JP2015/059188 2015-03-25 2015-03-25 Dispositif de sortie, procédé de sortie, programme et support d'enregistrement WO2016151810A1 (fr)

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JP2016505349A JP6106802B2 (ja) 2015-03-25 2015-03-25 出力装置、出力方法、プログラム及び記録媒体
PCT/JP2015/059188 WO2016151810A1 (fr) 2015-03-25 2015-03-25 Dispositif de sortie, procédé de sortie, programme et support d'enregistrement

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WO2021172467A1 (fr) * 2020-02-28 2021-09-02 いすゞ自動車株式会社 Appareil de diagnostic et procédé de diagnostic
WO2023149117A1 (fr) * 2022-02-03 2023-08-10 日立造船株式会社 Système d'aide à la surveillance

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JP2003269183A (ja) * 2002-03-12 2003-09-25 Ishikawajima Harima Heavy Ind Co Ltd ディーゼル機関の過給機の運転状態監視装置
JP2010007672A (ja) * 2009-10-13 2010-01-14 Kawasaki Heavy Ind Ltd 舶用ディーゼルエンジンの異常検出方法

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JP2001208649A (ja) * 2000-01-25 2001-08-03 Mitsubishi Heavy Ind Ltd エンジン部品の交換時期評価方法及びその装置
JP4685600B2 (ja) * 2005-11-14 2011-05-18 ヤンマー株式会社 船舶の航行管理システム
JP5550969B2 (ja) * 2010-04-08 2014-07-16 株式会社ディーゼルユナイテッド ディーゼル機関の状態監視運転方法
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JP2003269183A (ja) * 2002-03-12 2003-09-25 Ishikawajima Harima Heavy Ind Co Ltd ディーゼル機関の過給機の運転状態監視装置
JP2010007672A (ja) * 2009-10-13 2010-01-14 Kawasaki Heavy Ind Ltd 舶用ディーゼルエンジンの異常検出方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021172467A1 (fr) * 2020-02-28 2021-09-02 いすゞ自動車株式会社 Appareil de diagnostic et procédé de diagnostic
JP2021134757A (ja) * 2020-02-28 2021-09-13 いすゞ自動車株式会社 診断装置及び診断方法
CN115190940A (zh) * 2020-02-28 2022-10-14 五十铃自动车株式会社 诊断装置及诊断方法
JP7230853B2 (ja) 2020-02-28 2023-03-01 いすゞ自動車株式会社 診断装置及び診断方法
CN115190940B (zh) * 2020-02-28 2023-08-29 五十铃自动车株式会社 诊断装置及诊断方法
WO2023149117A1 (fr) * 2022-02-03 2023-08-10 日立造船株式会社 Système d'aide à la surveillance

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