JPH07248816A - Engine plant operation management support system - Google Patents

Abstract

PURPOSE:To support sure maintenance by reporting the overall condition of a main machine at any time to detect a fault. CONSTITUTION:A ship main engine plant consisting or the main engine, a propulsion auxiliary machine, etc., is provided with an arithmetic unit 1, a data input device 3, a storage device 2, and a display device 5, and not only data from instruments of the main engine 4 can be directly inputted to the input device 3 but also data picked up on the main engine side and data acquired from the outside can be inputted there, and operation formulas, in accordance with which a data base for diagnosis, performance data, and data inputted from the input device 3 are used to calculate performance information and combustion information of the main engine 4, and a data base for maintenance management are stored in the storage device 2, and performance information and combustion information of the main engine 4, information of items required for search of the cause of a fault, and information of necessities of preparation of principal parts required for maintenance management are calculated by the arithmetic unit 1 and are selected by the operation from the outside and can be displayed on the display device 5, and abnormality estimated pauses and fault avoiding means or estimated causes and estimated preparation necessary positions are displayed in the descending order of priority.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation management support system for a main engine internal combustion engine mounted on a ship and propulsion auxiliary equipment such as a fuel pump and a lubricating oil pump.

[0002]

2. Description of the Related Art As a conventional device of this type, Japanese Patent Laid-Open No.
There is a failure diagnosis support device for an internal combustion engine described in JP-A-3-214640. The schematic configuration is as follows: storage means for storing knowledge regarding failure diagnosis of an internal combustion engine; data input means for inputting data indicating the failure status when a failure occurs in the internal combustion engine; and this data input means. Data and the knowledge about the failure diagnosis stored in the storage means, the diagnosis means for diagnosing the cause of the failure, and the display means for displaying the diagnosis result of the diagnosis means. With this configuration, when the data indicating that an abnormality has occurred is input from the internal combustion engine, the cause of the failure stored in the storage device is inferred from the data and displayed on the display unit to notify the operator. In addition, it is possible to easily store knowledge about a new cause of failure in the storage device.

In the above conventional technique, the cause of failure is determined by the data input from the internal combustion engine through the data input device. Therefore, after the failure occurs, the cause of failure can be immediately known. It is like this. However, if the conventional failure diagnosis support device is applied, it cannot be dealt with until a failure occurs, so there is a problem in that it cannot be used for management support. In other words, the main engine installed in a ship has a major problem in terms of safe navigation as well as an obstacle to the voyage schedule if a failure that requires stopping the main engine for a certain period of time or more during repair occurs during navigation. It becomes a problem. For this reason, the main engine for a marine vessel is sufficiently managed so that a failure does not occur during navigation and further convenient for operation and control. A monitoring system that has already been put to practical use is used for its management. The monitoring system is one in which data from a main engine internal combustion engine is input to a computer by a data input device and displayed on a display device. Even if a monitoring system is used, the work for the management is considerably complicated, the work amount is large, and improvement is desired. However, there is no highly reliable device or system that can handle the management, and it is not practical even though it is expensive, and it is the current situation. That is, for example, the sensor for obtaining data from the main engine internal combustion engine is abnormally expensive, has a short life, and has poor reliability. However, there are some points that lack reliability and practicality, and the system does not meet the needs of the ship.

[0004]

SUMMARY OF THE INVENTION From the above, the present invention enables the crew to be informed of the overall situation of the main engine internal combustion engine (diesel engine) at any time, so that a failure may occur. The purpose of the present invention is to provide an engine plant operation management support system for ensuring reliable maintenance.

[0005]

SUMMARY OF THE INVENTION A first invention is a marine main engine plant composed of a main engine, propulsion auxiliaries and the like, a computing device, and a data input device, a storage device, and a data input device related to the computing device. A display device is provided, data from the instrument of the main engine can be directly input to the input device, and sampling data collected by the main engine side and data acquired from the outside can be input, and the storage device is provided with a diagnosis. Database, performance data, stores an arithmetic expression for calculating performance information and combustion information of the main engine using the data input from the input device, and the data input from the data input device by the arithmetic device And the performance information and combustion information of the main engine are calculated from the data and the arithmetic expression stored in the storage device, and the information can be externally selected and displayed on the display device. If there is Rutotomoni abnormality is characterized in that the probable cause and failure avoiding means to display in descending order of priority.

The terms "abnormal" and "fault" are used to mean a fault in which "abnormal" is less than "fault", and the following description is also used in this sense.

The above-mentioned collected data can be easily and accurately measured by a person using a manometer such as a minute pressure or wind pressure measurement, but if this is done by a machine, it is considerably difficult and unreliable. When the automatic measurement by such an instrument is difficult, input the data measured by a person as the collected data. The data obtained from the outside is, for example, the details of fuel oil or lubricating oil, and is created by the seller or obtained by the purchaser after the purchase is inspected, but is of course sufficiently reliable. Must. The performance information of the main engine is for diagnosing the current performance of the engine, and more specifically, by checking the consistency (or disengagement) of the engine output and the fuel consumption, the malfunction of the engine is known and the failure is predicted. This is for preventing excessive output (overload) by checking the engine output state. Therefore, specifically, it is the axial horsepower, the fuel consumption rate, the T / C rotation speed, the maximum pressure, the scavenging pressure, the exhaust temperature, the load indicator, the compression pressure, the T / C outlet exhaust temperature, and the like. The combustion information is for diagnosing whether the combustion state of each cylinder of the engine or all cylinders is good or bad. In a specific engine, the engine exhaust temperature, scavenging temperature, scavenging pressure, turbocharger speed, fuel oil temperature, and other values are determined as reference values depending on the engine speed. By comparing the values, the quality of the combustion state can be diagnosed. The reference value and the actual value are combustion information.

A second aspect of the present invention adds a function of searching for a cause of failure to the first aspect of the invention, and relates to a marine main engine plant composed of a main engine and propulsion auxiliary machines, a computing device, and the computing device. A data input device, a storage device, and a display device are provided so that the data from the instrument of the main engine can be directly input to the input device, and the collected data collected by the main engine and the data acquired from the outside can be input. The storage device stores a calculation database for calculating performance information and combustion information of the main engine using a diagnostic database, performance data, and data input from the input device.
The information input from the data input device by the arithmetic device and the data stored in the storage device and the arithmetic expression to calculate the performance information of the main engine, the combustion information, and the information of the items necessary for the search for the cause of the failure, The information can be selected and displayed on the display device by an operation from the outside, and if there is an abnormality, the probable cause and failure avoidance means are used.If a failure occurs, the probable cause and the estimated maintenance required location are prioritized. The feature is that they are displayed in descending order.

In the search for the cause of the failure, similarly to the conventional failure monitoring system, an alarm generation limit is set for each numerical data regarding the monitoring items for the failure monitoring, and an alarm is issued when the data exceeds the limit. However, simply issuing an alarm does not mean finding the cause of the failure. When investigating the cause of a failure, it is of great significance to know the state of some data obtained at an appropriate time interval immediately before the occurrence of the failure. That is, in many cases, the cause of failure is often the part related to the item in which the abnormality is first recognized. Therefore, it is preferable that the latest data and some data immediately before the latest data are always shifted and stored while being updated, and fixed when a failure occurs so that it can be displayed as failure cause search information.

A third aspect of the present invention adds the main part management function to the second aspect of the present invention, and relates to a marine main engine plant composed of a main engine, propulsion auxiliaries, etc., an arithmetic unit, and this arithmetic unit. A data input device, a storage device, and a display device are provided so that the data from the instrument of the main engine can be directly input to the input device, and the collected data collected by the main engine and the data acquired from the outside can be input. The storage device stores a diagnostic database, performance data, an arithmetic expression for computing performance information and combustion information of the main engine using the data input from the input device, and a maintenance management database. , Based on the data input from the data input device by the arithmetic device and the data and arithmetic expression stored in the storage device, performance information of the main engine, combustion information, Information on the items necessary for investigating the cause and information on the necessity of maintenance of the main parts required for maintenance management are calculated, and the information can be selected and displayed on the display device by an external operation, and an abnormality can be displayed. In some cases, the probable cause and failure avoidance means are displayed, and when a failure occurs, the probable cause and the estimated maintenance required place are displayed in descending order of priority.

Since the cumulative usage time is an important item of failure prediction for parts and the like whose usage time is fixed, it is necessary to manage the parts. It should be recorded daily so that the operator can be informed of the need for maintenance according to the maintenance intervals set. Further, it is preferable to calculate and predict the periodic maintenance time from the current data. Further, it is preferable to record the date and time of maintenance so that the maintenance time of each component that differs depending on the engine can be set to a more economical and unique setting by knowing the true durability time of the component.

[0012]

According to the first aspect of the invention, since the data input device can directly input the data from the instrument of the main engine and the sampling data and the data acquired from the outside, the data and the storage device The engine performance diagnosis information and the combustion diagnosis information can be calculated based on the data and the information can be displayed on the display device. In addition, do not use this information for automatic measuring instruments (sensors) where the automatic measuring data by the instrument is not always accurate or for too expensive automatic measuring instrument, and input the collected data by more accurate human measurement. By so doing, it is possible to obtain highly reliable engine performance diagnostic information and combustion diagnostic information by doing so. The operation manager selects the performance information and combustion information of the main engine and displays them on the display device.
The display can confirm the normal operating state of the main engine, and if there is an abnormality, its probable cause and failure avoidance means are displayed, so that it is possible to accurately deal with the abnormality and not cause a serious failure. It becomes possible to

According to the second invention, in addition to the means of the first invention, it is possible to display information necessary for exploring the cause of the failure and to display the estimated cause and the failure avoidance means in descending order of priority. By doing so, when a failure occurs, the crew can quickly and accurately deal with the failure.

According to the third invention, in addition to the means of the second invention, the necessity of maintenance of the main parts is displayed, so that a maintenance plan can be easily made and accurate maintenance can be performed.

[0015]

Embodiment An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of this engine plant operation management support system, which is an arithmetic unit (electronic computer).
1, a storage device 2, a data input device 3, a main engine 4, a display device 5, and keyboards 6 and 7. Arithmetic unit 1
Is an electronic computer, which performs various calculations, judgments, and graphic processings on the basis of the data from the storage device 2 and the data input device 3, and outputs the results and the necessary data to the display device 5. . The storage device 2 is a database for engine performance diagnosis, a database for combustion diagnosis, a database for exploring causes of abnormalities, performance data (basic data of the engine obtained by trial), engine performance diagnosis and combustion calculated from the above-mentioned data. It stores each arithmetic expression to obtain data necessary for diagnosis, search for cause of abnormality, and maintenance management of main parts.

The data input device 3 has a data input terminal 3a from the main engine and propulsion auxiliary machine 4 side, a data input terminal 3b from the keyboard 6, and a preliminary input terminal 3c.
The measurement data automatically measured from the instrument in the main engine 4 is introduced through the input terminal 3a, and the sampling data collected by the person on the machine side and the data obtained from the outside such as the details of fuel oil and lubricating oil are collected. It is introduced through the input terminal 3b by manual input with the keyboard 6 and input to the arithmetic unit 1.
The spare input terminal 3c is
When a reliable and durable sensor becomes available and can be automatically measured, the manual input is stopped and the sensor is used to automatically perform the input. As a result, it is possible to improve its own function as the sensor technology advances. The display device 5 uses, for example, an SRT, and is operated by the keyboard 7 to display the calculation result of the calculation device 1. The keyboard 6 can also be configured to serve as the keyboard 7.

As shown in FIG. 2, the engine plant operation management support system configured as described above starts the system in step S1, calls a menu in step S2, and in step S3, performs performance diagnosis, combustion diagnosis of the menu, If any one of fault cause search and maintenance management is selected, the operation is performed as shown in the flowcharts of FIGS. 3 to 6 corresponding to each. Each of them will be described below.

When the performance diagnosis is selected in step S3, the operation is performed as shown in the flowchart of FIG.
In step S4, the performance diagnosis mode is set, and in step S5, manually collected data from the machine side is input by the keyboard. The calculation program is called in step S6, and output and displayed on the display device 5 in step S7. In step S8, the operator is asked whether or not to change the base data. When the change is made, the process proceeds to step S9, and the data is input, for example, when the details of the fuel oil are changed, the data is input and the process proceeds to step S11. If no change is made, step S10 is directly followed by step S
Go to 11. In step S11, the diagnostic program and the base data are called, the performance diagnosis by location is performed in step S12, and in step S13, the operator is asked whether to display the result of location diagnosis in a comprehensive manner or as a single display. When the comprehensive display is selected, the process proceeds to step S14 to be started, the process proceeds to step S15 to call the diagnostic program and the base data, the comprehensive performance diagnosis is performed in step S16, and the diagnostic result is abnormal in step S17. Or normal. If it is abnormal, step S1
In step S20, the diagnostic program and the base data are called, the adjustment location that is considered to be the cause thereof is designated, and they are displayed on the display device 5 in descending order of possibility.

An example of the screen display is shown in FIGS.
become that way. FIG. 7 shows the main data required for main engine performance diagnosis. 8 and 9 are the main basic data (curve) of the main engine.
And the actual state of the main engine (marked with *) is displayed in a graph, which can be selected and displayed for each item. Curve a is shaft horsepower, curve b
Is the fuel consumption rate, curve c is the turbocharger speed (average), curve d
Is the maximum pressure (average), curve e is the scavenging pressure, curve f is the exhaust temperature (average), curve g is the load indicator, curve h is the compression pressure (average), curve i is the turbocharger outlet exhaust temperature, * The mark is the data of the main engine at that time displayed together with the curve of the basic data. An appropriate allowable range is determined for each of these basic data, and if the data at that time falls outside the allowable range, a message is displayed accordingly. The main engine is adjusted based on the message. After the adjustment is performed, the process proceeds to step S14, and when it is started, the process proceeds to step S17 through step S15 and step S16 as described above. When it is determined to be normal in step S17, the process proceeds to step S18 and ends. Also,
When the single display is selected in step S13, the process proceeds to step S22 to specify the specific location, and the process proceeds to step S23 to display the specific location,
In step S25, the diagnostic program and the base data are called, and the adjustment location is designated and displayed on the display device 5. In step S26, the maintenance engineer adjusts the main engine. After the adjustment of the main engine, the procedure returns to step S10, and the state after the adjustment is performed in the same manner as described above.

When the combustion diagnosis is selected in step S3, the operation is performed as shown in the flowchart of FIG. In step S30, the combustion diagnosis mode is set. In step S31, the menu is called by the keyboard to start. At this time, if the combustion diagnosis at the same time as the performance diagnosis has been performed after the performance diagnosis described above is performed, the external acquisition data may not be input, but if the external acquisition data at the time of the combustion diagnosis is not input. To step S31
Entered in. The menu at this time is a large item necessary for combustion diagnosis of fuel oil, scavenging, exhaust gas, lubricating oil, cooling fresh water, and the like. In step S32, a menu is selected, and in step S33, it is output and displayed on the display device 5 that the diagnosis is by cylinder. And the next step S34
Ask the operator if the display of diagnostic results is by cylinder or all cylinders. If it is classified by cylinder, the process proceeds to step S35, and the operator calls the specific cylinder by the keyboard. As a result, the state of the specific cylinder is displayed on the display device 5 in step S36, the diagnostic program and the base data are called in step S37, calculation is performed, and step S37 is performed.
At 38, a message designating the state of each small item and the adjustment location is displayed on the display device 5. With reference to the display, the maintenance staff performs adjustment in step S39. After the adjustment is performed, the process returns to step S33.

If all cylinders are selected in step S34, the process proceeds to step S40, and the operator starts with the keyboard. As a result, the diagnostic program and the base data are called in step S41 to perform a calculation, the diagnostic result is displayed in step S42, and the process proceeds to step S43. If there is no abnormality in the diagnosis result, the process proceeds to step S44, the keyboard is reset, and the process proceeds to step S45 and ends. If there is an abnormality in step S43, the process moves to step S46, and a message designating the small item-specific states and adjustment points is displayed on the display device 5. The maintenance staff performs adjustment in step S47 with reference to the display. After the adjustment is performed, the process returns to step S33.
The steps after step S33 are as described above.

As an example of the screen display in step S46 when the menu selected in step S32 is fuel oil, scavenging gas, exhaust gas, or lubricating oil, FIG.
~ It becomes like FIG. FIG. 10 shows a case where fuel oil is selected. Items related to combustion and numerical values are shown in a table, and a message designating the states and adjustment points of small items related to fuel oil is displayed in characters. Fig. 11 shows the case when scavenging is selected, the items related to combustion and numerical values are shown in the table (same as the above table), and the message specifying the state of small items related to scavenging and the adjustment point is displayed in characters. ing. FIG. 12 shows a case where exhaust gas is selected, items related to combustion and numerical values are shown in a table (same as the above table), and a message designating states of small items related to exhaust gas and adjustment points is written in characters. It is displayed. FIG. 13 shows a case where a lubricating oil is selected. Items related to combustion and numerical values are shown in the table (same as the above table), and the states of small items related to the lubricating oil and adjustment points are highly likely. The specified messages and are displayed in letters.

When the failure cause search is selected in step S3, the operation is performed as shown in the flowchart of FIG. In step S50, the failure cause search mode is set. In step S51, the menu is called by the keyboard to start. In step S52, the failure cause search program is called, and in step S53, the operator is asked whether the number of alarm occurrences of failure is plural or singular. If the number is plural, the process proceeds to step S54 and the diagnosis is started by the keyboard. The alarm data trend is displayed on the display device in step S56, and the operator is asked whether it is difficult or easy to determine the failure location in step S57. If it is difficult, the process shifts to step S58 and the diagnosis is made star by the keyboard. Step S59
Then, the diagnostic program and the database are called to perform calculation, and in step S60, the cause of failure at a specific location is displayed. The maintenance worker cancels the cause of the failure in step S61, the keyboard is reset in step S62, the process proceeds to step S63, and the process ends.

When it is easy to determine the failure point in step S57, the process proceeds to step S64, the specific point is designated by the keyboard, and the failure point is displayed on the display device in step S65. In step S66, the diagnosis can be started by the keyboard. In step S67, the diagnostic program and base data for the specific location are called to perform calculation, and in step S68 the cause of failure is displayed on the display device. In step S69, the maintenance worker cancels the cause of the failure, in step S70 the reset is performed by the keyboard, and the process proceeds to step S71 and ends. Step S5
If there is a single failure alarm occurrence in step 3, step S
Move to 72 and use the keyboard to specify a specific location (failure location)
Is designated, the failure location is displayed in step S73, and the diagnosis can be started by the keyboard in step S74. In step S75, the diagnostic program and base data for the specific location are called to perform calculation, and in step S76, the cause of failure is displayed on the display device. Step S
At 77, the maintenance personnel cancels the cause of the failure, and at step S78, it is reset by the keyboard. Then, the process proceeds to step S79 and ends.

An example of the screen display in step S60 is shown in FIG. On the screen, the item of the part related to the failure and the state or the numerical value indicating the state of being continuously measured at an appropriate time interval of the item are displayed at the time of the failure occurrence (measurement 6) and five steps up from the failure occurrence time. Up to the point of time (Measurement 5 to Measurement 1) are displayed as one table, and the state is displayed on the table of another same item so as to be easily read in the direction of the arrow. The arrow indicates whether the value at that point is approximately the same as the previous measurement, is slightly rising, is slightly descending, is rising significantly, or is descending greatly. It is indicated by an arrow.
Then, what can be estimated as the cause of the failure is displayed as a message in order from the most probable one. From the table on this screen, it can be seen that when a failure occurs, the first abnormality appears as a drop in the camshaft lubricating oil pressure. Therefore,
The maintenance staff can make a quick and accurate decision based on the contents and message of the table and deal with the failure.

When the maintenance management is selected in step S3, the operation is performed as shown in the flowchart of FIG. In step S80, the maintenance management mode is entered, and in step S81 the menu is called by the keyboard to start. The menu at this time is the main items required for normal maintenance management of the exhaust valve, fuel valve, start valve, safety valve, scavenging chamber, air cleaner (air side), air cleaner (water side), piston, crank, etc. . The menu is selected in step S82, the integrated time program and the maintenance program are called in step S83, and the record table is displayed on the display device in step S84. Step S85
The designated time for maintenance and the acquired data are input by the keyboard at, and the maintenance table is displayed on the display device at step S86.
When the operator wants to change the maintenance program in step S87, the process proceeds to step S88 and a program change message is input by the keyboard. And step S
The maintenance table changed in 89 is displayed on the display device, and the process proceeds to step S90. When the maintenance program is not changed in step S87, the process proceeds to step S90. In step S90, it is asked whether or not the operator inputs the maintenance message. When the maintenance message is input, the process proceeds to step S91, and the maintenance message is input by the keyboard.
And ends. When the maintenance message is not input in step S90, the process proceeds to step S92 and ends.

When the programs selected in step S82 are exhaust valves and fuel valves, the display screens in step S84 are illustrated in FIGS. 15 and 16, respectively. FIG. 15 shows a record of the date of the main engine exhaust valve, the accumulated operating time, the state, and the operating time for each cylinder number, a maintenance prediction table, and a maintenance recording table. And the number in the recorded number "" is displayed in orange, which means that the maintenance time is approaching, and the number in [] of the number in the maintenance forecast table is displayed in red. , This indicates that the scheduled maintenance time will be exceeded on the scheduled day. Figure 15
Since the fuel valve is shown in substantially the same manner as in FIG. 14, its description is omitted.

In this engine plant operation management support system, not all of the data on the main engine internal combustion engine and propulsion auxiliary equipment side enter the input device from the automatic measuring device (sensor), but part of it is input as sampling data from the keyboard. Therefore, it is not necessary to use unreliable sensors, too expensive sensors, short-lived sensors, etc., thus ensuring sufficient reliability of the results of performance diagnosis, combustion diagnosis, and fault cause search. This is a practical system that is advantageous in terms of manufacturing cost. The graphs of main engine performance judgment described with reference to FIGS. 8 and 9 are excellent in that an abnormality can be easily recognized because the difference between the reference value and the actual state can be grasped at a glance. Further, the screen of the result of the combustion diagnosis described with reference to FIGS. 10 to 13 is excellent in that actual numerical information, item states, and messages can easily grasp the combustion state.

In the above-described embodiment, the configuration in which the performance diagnosis, the combustion diagnosis, the failure cause search, and the maintenance management are all possible is shown, but depending on the case, one or both of the failure cause search and the maintenance management can be performed. It may be omitted.
This is because the performance diagnosis and the combustion diagnosis are basically effective in considerably supporting the engine plant operation management of the ship. In addition, since performance diagnosis, combustion diagnosis, and failure cause investigation can use most of the monitoring systems provided in conventional vessels, a device that supplements the shortfalls of existing monitoring systems must be installed. It can be implemented by providing. For example, the data from the instruments of the main engine in the examples are often used in the monitoring system, and they can be used.In addition, the sampling data collected by the main engine and the data obtained from the outside can be manually input. By making it possible to input to the data input device, most of the hardware part is completed.

[0030]

According to the invention of claim 1, the performance information and the combustion information of the main engine are calculated, and the information can be externally selected and displayed on the display device. By displaying the failure avoidance measures in order of priority, the crew can be informed of the overall situation of the main engine at any time, and the crew can respond to abnormalities accurately and promptly. The effect of being able to know in advance and reliably performing maintenance is achieved. That is, since the failure is predicted from the abnormality, the failure can be avoided by responding to the failure, and the number of failures can be reduced. And
The cause of the fundamental abnormality of the main engine performance and combustion is often poor fuel, and is therefore extremely effective as a countermeasure against poor fuel and a torque rich avoidance measure. According to the invention of claim 2, in addition to the means of the invention of claim 1, information necessary for exploring the cause of failure can be displayed, and the estimated cause and failure avoidance means are displayed in descending order of priority. Thus, when a failure occurs, the crew member can take prompt and accurate measures against the failure. According to the invention of claim 3, in addition to the means of the invention of claim 2, the necessity of maintenance of the main parts is displayed. Therefore, it is easy to make a maintenance plan, it is easy to deal with the change of the maintenance schedule, and it is appropriate. It has the effect of enabling maintenance.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is the first part of a flowchart for explaining the operation of the embodiment.

FIG. 3 is a flowchart for explaining an operation when the performance diagnosis of the embodiment is selected.

FIG. 4 is a flow chart for explaining an operation when the combustion diagnosis of the embodiment is selected.

FIG. 5 is a flow chart for explaining an operation when a failure cause search of the embodiment is selected.

FIG. 6 is a flowchart for explaining an operation when the maintenance management of the embodiment is selected.

FIG. 7 is a partial display content diagram showing an example of a screen display in the performance diagnosis of the embodiment.

FIG. 8 is a partial display content diagram showing an example of a screen display in the performance diagnosis of the embodiment.

FIG. 9 is a partial display content diagram showing an example of a screen display in the performance diagnosis of the embodiment.

FIG. 10 is a display content diagram showing an example of a screen display when fuel oil is selected in the combustion diagnosis of the simultaneous embodiment.

FIG. 11 is a display content diagram showing an example of a screen display when scavenging is selected in the combustion diagnosis of the simultaneous embodiment.

FIG. 12 is a display content diagram showing an example of a screen display when exhaust gas is selected in the combustion diagnosis of the simultaneous embodiment.

FIG. 13 is a display content diagram showing an example of a screen display when a lubricating oil is selected in the combustion diagnosis of the simultaneous embodiment.

FIG. 14 is a display content diagram showing an example of a screen display when the failure cause search of the simultaneous embodiment is selected.

FIG. 15 is a display content diagram showing an example of a screen display when the maintenance management of the simultaneous embodiment is selected and the exhaust valve is selected.

FIG. 16 is a display content diagram showing an example of a screen display when the maintenance control of the simultaneous embodiment is selected and the fuel valve is selected.

[Explanation of symbols]

 1 computing device 2 storage device 3 data input device 4 main engine and propulsion auxiliary device 5 display device 6 keyboard 7 keyboard

Claims (3)

[Claims] 1. A marine main engine plant including a main engine and propulsion auxiliary devices is provided with a computing device and a data input device, a storage device, and a display device related to the computing device, and the input device is provided with the computing device. The data from the instrument of the main engine can be directly input, and the collected data collected by the main engine and the data acquired from the outside can be input, and the storage device includes a diagnostic database, performance data, and the input device. An arithmetic expression for calculating performance information and combustion information of the main engine is stored using the input data, and the data input from the data input device by the arithmetic device and the data stored in the storage device and Performance information and combustion information of the main engine are calculated from a calculation formula, and the information can be selected and displayed on the display device from the outside and estimated when there is an abnormality. An engine plant operation management support system characterized in that causes and failure avoidance means are displayed in descending order of priority. 2. A marine main engine plant composed of a main engine, propulsion auxiliary equipment and the like is provided with an arithmetic unit and a data input unit, a storage unit and a display unit related to the arithmetic unit, and the input unit is provided with the arithmetic unit. The data from the instrument of the main engine can be directly input, and the collected data collected by the main engine and the data acquired from the outside can be input, and the storage device includes a diagnostic database, performance data, and the input device. An arithmetic expression for calculating performance information and combustion information of the main engine is stored using the input data, and the data input from the data input device by the arithmetic device and the data stored in the storage device and Performance information of the main engine, combustion information, and information of items necessary for exploring the cause of failure are calculated from a calculation formula, and the information is selected on the display device by an external operation. It is possible to select and display it, and when there is an abnormality, the probable cause and failure avoidance means are displayed, and when a failure occurs, the probable cause and the estimated maintenance required place are displayed in descending order of priority. Engine plant operation management support system. 3. A marine main engine plant composed of a main engine, propulsion machinery and the like is provided with a computing device and a data input device, a storage device and a display device related to the computing device, and the input device is provided. The data from the instrument of the main engine can be directly input, and the collected data collected by the main engine and the data acquired from the outside can be input, and the storage device includes a diagnostic database, performance data, and the input device. An arithmetic expression for calculating the performance information and combustion information of the main engine using the input data, and a maintenance management database are stored, and the data input from the data input device by the arithmetic device and the storage device. Performance information of the main engine, combustion information, information of items necessary for exploring the cause of failure, main parts required for maintenance management from the data and arithmetic expressions stored in The information on the necessity of maintenance is calculated, the information can be selected and displayed on the display device by an operation from the outside, and if there is an abnormality, the probable cause and failure avoidance means, and if a failure occurs, An engine plant operation management support system characterized in that the probable cause and the estimated maintenance required location are displayed in descending order of priority.