JPH09226688A - Diesel engine supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support from on the ground operation/maintenance of a Diesel engine mounted in many ships by accurate diagnosis. SOLUTION: A data is transceived between a ship and on the ground, of an operating condition having a causal relation to an abnormal condition of an engine, from a difference between a detection value of a first operating condition automatically detected and a reference value and from a degree of the causl relation, possibility generating the abnormal condition is calculated by an analytic computer 3, a second operating condition (not automatically detected) related to the abnormal condition is displayed in a CRT11, this display is checked by a person, by inputting its difference from a reference condition from a keyboard 12, including this input is recalculated by the analytic computer 3. Accordingly, related all operating conditions can be input, so as to enhance reliability of diagnosis. A number of sensors and kinds can be reduced with a small number of accessories of the ship, a device is economical as the Diesel engine supporting device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diesel engine adapted to automatically detect a first operating state among operating states related to a diagnosis of a diesel engine which comprises a first operating state and a second operating state. The present invention also relates to a diesel engine support device that supports handling of a diesel engine mounted on a ship.

[0002]

2. Description of the Related Art In ships, in order to cope with the decrease in crew members and the decrease in skilled workers, labor saving in operation management and ensuring safe driving have become important issues. For this reason, a land support system has been proposed and partially implemented, such as mounting a diagnosis and prediction device for a diesel main engine on a ship and assisting the monitoring and storage of data and maintenance plans from land.

In the conventional engine diagnosis and prediction system, generally, a method is used in which input values of various sensors are compared with initial values, and an abnormality of the engine is predicted or a maintenance time is notified based on the relationship between them. However, the accuracy of such a diagnosis based only on the sensor input is insufficient. That is, for example, when predicting a certain failure of the engine, the occurrence of the failure or the possibility of the occurrence of the failure can be accurately known by considering all of the failure or the state of the engine appearing as a precursor of the failure. However, there are various types of sensors that can be actually equipped and used for diagnosis, that is, the sensor itself has not been developed, it is unreliable for marine use, it is expensive, and it is a narrow ship. However, there are restrictions on the installation location, and it is uneconomical to equip a main engine for propelling a ship with an automatic detection sensor for each cylinder because of the large number of cylinders. As a result, in the conventional engine diagnosis system, the judgment result is rough or unclear, and the reliability is low.

Further, an arithmetic processing unit such as a computer is usually used for engine diagnosis, but there are various obstacles in mounting such a unit on a ship. In other words, the ship is subject to vibrations and vibrations, the equipment space is small, and the environment is poor for installing computers, etc., the operations of these are unfamiliar to the crew members of the ship, and the crew members change frequently. There are various problems such as difficulty in learning, especially in a 500 to 2000 ton class domestic vessel, it is technically and economically burdensome to have such a device for each vessel.

On the other hand, the conventional onshore support system mainly has an engine monitoring function, a data storage function, a maintenance management function, and the like, and cannot be placed on land to perform highly reliable engine diagnosis. .

[0006]

SUMMARY OF THE INVENTION The present invention solves the above problems in the prior art, has less equipment on board, less burden on crew, has a simple structure, is highly economical, is reliable and quantitative. An object of the present invention is to provide a diesel engine support device having various diagnostic functions.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention automatically determines the first operating state of the operating states related to the diagnosis of the diesel engine, which is composed of the first operating state and the second operating state. In a diesel engine supporting device for supporting handling of a diesel engine mounted on a ship, the ship side transceiver unit and the ship side expression unit mounted on each ship, wherein the ship has a plurality of ships. And a ship side input unit, a land side transmitter / receiver unit installed on land, an analysis unit, a storage unit, and a land side expression unit, and the ship side transmitter / receiver unit transmits the detection value of the first operating state to the land side. In addition, the transmission from the land side is received, the land side transmission / reception unit receives and outputs the transmission from the ship side and transmits the input content to the ship side, and the storage unit is a reference of the first operating state. Value and the Holding a correlation of a predetermined causal relationship between each of the plurality of abnormal states of the diesel engine and each of the operating state items, the analysis unit, the output of the land-side transceiver unit and the storage unit of the storage unit. A reference value is input and these are compared to calculate the degree of the difference, and the degree of the difference and the degree of the causal relationship of the first operating state extracted from the storage unit are calculated for each of the abnormal states. The degree of abnormal condition is calculated, and the land-side expression unit retrieves from the storage unit an item of a specific second operating condition that correlates with at least one specific abnormal condition of the abnormal conditions calculated by the analyzing unit. The ship-side expression unit can express the specific second operating state via the land-side transmitting / receiving unit and the ship-side transmitting / receiving unit, and the boat-side input unit can display the specific second operating state and its reference state. The degree of difference The analysis unit can re-calculate the degree of the specific abnormal state according to the input of the ship side input unit and the degree of the causal relationship of the second operating state extracted from the storage unit, and the land side expression The section is further characterized in that the calculation result of the recalculation section can be expressed.

[0008]

FIG. 1 shows an example of the configuration of a diesel engine support device to which the present invention is applied. The present device is a diesel engine for assisting handling of a diesel engine, which is adapted to automatically detect a first operating state among operating states related to a diagnosis of the diesel engine including a first operating state and a second operating state. A ship side communication computer 1 which is a support device and is mounted on a ship as a ship side transmitting / receiving unit, a ship side CRT 11 connected thereto as a ship side representation unit, and a ship side keyboard 12 as a ship side input unit also connected to the computer 1. And a land-side communication computer 2 as a land-side transmitting / receiving unit installed on land, an analysis computer 3 as an analysis unit, a storage device 4 as a storage unit, and an analysis computer 3 as a land-side expression unit. Analysis CRT
31 and an analysis keyboard 32.

The ship-side one shown above the chain line in the figure is mounted on each of a number of ships. The land type shown below the chain line may be located in one place such as an engine manufacturing plant. With such a configuration, the land support apparatus of this example has a function of collectively diagnosing each of the diesel engines mounted on many ships on land. Reference numeral 5 is a sensor for automatically detecting the first operating state, reference numeral 6 is a signal conversion unit for the detected value, and reference numeral 7 is a server. Further, the above-mentioned first operating state is an operating state that is relatively easy to measure with a sensor or the like, for example, general temperature, pressure, rotational speed, etc. correspond, and the second operating state is An operating state that is impossible or difficult to detect with a sensor, has low reliability, or is uneconomical. For example, abnormal colors, abnormal sounds, special abnormal vibrations, data for each cylinder, etc. are applicable. .

The ship-side and land-side communication computers 1 and 2 are
It is possible to mutually transmit and receive via a ship telephone line or the like. The ship-side keyboard 12 and the CRT 11 can input transmission contents and display transmission / reception contents as necessary. The ship-side communication computer 1 is provided with a normal transmission mode for controlling the transmission timing and the like, for example, transmitting once every four hours, and an irregular communication mode performed in response to an emergency or a call. The land-side communication computer 2 is normally in a standby state and can always receive data on the ship side.

The server 7 sorts out the signals when a plurality of analysis computers 3 are provided. Also, so that communication from many ships can be accepted,
If necessary, put the received data in the storage device 4,
Management of data transfer in and out of the storage device 4 is performed. However, the communication computer and the analysis computer may have such a function.

The storage device 4 stores the reference value of the first operating state,
It holds data related to engine diagnosis such as a correlation of a predetermined degree of causal relationship between each of a plurality of abnormal states of a diesel engine and each of operating condition items. When such data is different for each ship, it is stored for each ship. Furthermore, the received operation data of many ships is accumulated for each ship.

When diagnosing a diesel engine mounted on any ship, the analysis computer 3 first inputs the detected value of the first operating state of the ship detected by the sensors 5 and uses this as a reference value. Calculate the degree of difference from the reference value by comparing with. The detection value received from the ship side together with the reference value is once stored in the storage device 4 for each ship as described above.
Called when calculating. The degree of difference between the detected value and the reference value is calculated, for example, as the ratio of the difference between the detected value and the reference value to the reference value.

The analysis computer 3 then determines from the degree of the above difference and the degree of the predetermined causal relationship between each of the plurality of abnormal states of the diesel engine and each of the first operating state items. The degree of abnormal condition is calculated for each abnormal condition. Here, the abnormal state is a defective state of the engine part such as breakage, damage, wear, and adjustment failure.
The correlation of the degree of causal relation between the abnormal state and the operating state item is
Similarly, it is stored in the storage device 4 as a correlation table, for example, and is called at the time of calculation.

The degree of causal relationship is, for example, 3 of A, B and C.
Rank in stages. These may be input as numerical values in advance, or may be calculated and numerically calculated by the analysis computer 3. In this case, for example, a total number of driving states having a causal relationship and a numerical value proportionally distributed from each degree are given. The degree of abnormal condition is
For example, the product of the degree of the difference and the degree of the causal relationship,
It is calculated as a value aggregated for each causal relationship.
This result indicates that, for example, the possibility of fuel valve body cracking is 40
It is given as a numerical value such as%.

In the analysis CRT 31, the item of the specific second operating state having a correlation with at least one of the calculated abnormal states can be read out from the storage device 4 and expressed. If the specific abnormal state is, for example, "fuel valve body crack", the items of the specific second operating state correlated with this are "arbitrary cylinder explosion pressure, arbitrary cylinder explosion pressure deviation, fuel consumption, exhaust color, There are six items displayed, "rotational speed fluctuation, rotational speed hunting". In order to clarify the purpose of expressing such an item, it is desirable that the item be in the form of a question, for example, "is the exhaust color black?" Note that the expression unit is a CRT visual display in this example, but may be a voice display.

The display items of the analysis CRT 31 are put in the ship side communication computer 1 via the analysis computer 1 and the like, and can be displayed on the ship side CRT 11. At this time,
An alarm or the like will occur, and someone on the ship side will look at the screen of the CRT 11 to know the above-mentioned questions. Since the second operating state is not automatically detected by the detecting means, it is possible to input the second operating state by the keyboard 12 on the ship side. For that purpose, a person must confirm the second operating state as described above. In this case, the equipment on the ship side is usually installed in the steering room or the engine control room, so the person who sees the screen can check the operation status by himself or investigate the operation monitoring of the engine by telephone on the ship. Ask. Then, the survey result is input by the keyboard 12 on the ship side.

The reference state of the second operating state is usually held also on the ship side. That is, the engine manager or engineer who is the driver of the diesel engine constantly operates and monitors the diesel engine, so that the engine that is in the standard state regarding sound, color, vibration, etc. is operating normally. You are aware of the condition. Therefore, although some subjective factors are included, considering the difficulty of detection by a sensor or the like, low detection accuracy, possibility of false detection, etc., there can be no serious error in the judgment of the observer, That judgment is much more reliable. In reality, when the assisting device having the diagnostic function as in the present invention is not equipped, the driver considers the second operating state related to the abnormal state and uses the actual engine to determine the second operating state. Since the difficult work of checking the states and making a comprehensive judgment on them in the head, there is a difference between the normal state and the abnormal state of the mere second operation state performed by using the support device of the present invention. The degree of recognition can be easily and accurately made by the driver.

However, the expression of the second operating state item may include the display of the reference state. When the display is in the question format, for example, "whether the exhaust color changes from gray-white to black when normal" is large or small, or "whether the rotational speed fluctuation is greater than 3%. The contents may include the reference state and the degree of difference from the reference state, such as "is it small?" In this case,
Any of "Large", "Medium", "None", etc. will be input with the keyboard 12 on the ship side.

The input contents of the ship-side keyboard 12 are transmitted to the land side and entered in the analysis computer 3. This content can be displayed on the analysis CRT 31. The analysis computer 3 recalculates the degree of the abnormal state once calculated from this input, the specific abnormal state stored in the storage device 4, and the degree of the causal relationship with this input. Analytical CRT3
1 can display this result. This result is expressed as a numerical value obtained by modifying the first calculated value, for example, the probability of fuel valve body cracking is 80%. According to such a recalculation, all operating states are taken into the engine diagnosis, so that even if not a special diesel engine expert, it is highly reliable because of the uniform and objective method. The final judgment of institutional diagnosis can be obtained. Then, by utilizing this for maintenance and repair of the diesel engine, it is possible to rationalize it and improve driving safety.

The contents of the diagnostic function of the diesel engine support system of the present invention will be described in more detail below with reference to specific examples. Tables 1 and 2 show an example of an abnormal state that may occur in a main engine diesel engine for propulsion mounted on a ship and an example of the correlation of the degree of a predetermined causal relationship between the operating state items related to the abnormal state. Indicates. Of these, Table 1 relates to items in the first operating state that are automatically detected by the sensor 5, and Table 2 relates to items in the second operating state where there is no sensor input.

[Table 1]

[0022]

[Table 2]

Tables 1 and 2 show examples of abnormal states of machines and parts of the fuel system. The overall diagnostic functions are as follows: the structural part of the engine body, the structural parts of auxiliary equipment, the lubrication system, the cooling water system,
A correlation table is created between all abnormal states to be diagnosed and the operating states having a causal relationship with respect to devices and parts of various systems such as the intake system, the exhaust system, and the compressed air system. Then, the sensor 4 is provided for all of these first operating states (Table 1), and the detected values are automatically input. It should be noted that the abnormal state also includes a state of maintenance or poor adjustment.

Along with these tables, reference values or reference states of these operating state items are stored in the storage device 4. This reference value may be a fixed value,
In a diesel engine for propulsion of a ship, even if the reference value of the engine speed is initially stored as 220 rpm, the rotation speed will decrease due to the effects of dirt on the hull and propellers, etc. The reference value may be modified for the state. In this case, the analysis computer 3
It is also possible to automatically correct by trend analysis or the like using.

In Tables 1 and 2, the degree of causality is divided into three stages of A, B, and C in descending order. For example,
If an abnormal state such as a plunger stick of the fuel pump occurs, the engine speed in the first operating state obviously decreases. Therefore, in this example, if an operating state such as a decrease in the engine rotational speed occurs, the cause of the above abnormality is We interpret it as having a big impact of A. If the plunger of the fuel pump sticks, the operating state of various engines will differ from the reference value or the reference state. Therefore, the degree of the causal relationship of A is also determined numerically in relation to all items. In the examples of Tables 1 and 2, there are 6, 5, and 8 of A, B, and C, respectively, for the above-mentioned abnormality, so for one A, the analysis computer 3 + (5 × 2) + (8 × 1)] ≈0.0
The calculated value of 83 is given.

Note that, with respect to the above-mentioned abnormal state, there is a causal relationship in both cases where the supercharger rotation speed is higher or lower than the reference value, so any one of them is used to calculate the degree of influence. Other abnormal states are also calculated in this way when the operating states on both sides (high or low) of the reference value have a causal relationship. Further, instead of the symbols such as A and B, the above numerical values may be calculated in advance and entered in the correlation table.
Furthermore, the degree of causality is complicated to calculate, but take into consideration the vertical columns in Tables 1 and 2 that show how much abnormality may occur for a certain operating state item. You may

The degree of difference between the measured value and the reference value is calculated as described above, for example, as a ratio of the difference to the reference value. For example, the detected value of the engine speed is 205 rp
If the reference value is 220 rpm in m, the analysis computer 3 calculates 6.8%. This value can be used as is in the next calculation of the degree of abnormal condition,
For example, the rank may be ranked in seven stages from 1 to 0 at appropriate intervals, the above 6.8% may be applied to the rank, and the rank may be converted into a numerical value. Since there are various calculation methods for quantifying the magnitude of the causal relationship and the difference from the reference value, any other calculation method may be used as long as it is rational.

The analysis computer 3 calculates the degree (hereinafter referred to as "confidence degree") for each abnormal state based on the causal relationship and the degree of difference as described above. For example, in the calculation using the above rank, when all the ranks including the second driving state are 1, the certainty factor of the abnormality is 1, that is, 100%. In the example of the plunger stick,
If the ranks of the causal relationships A, B, and C are all 0.6, 0.6, and 0.4, respectively, the confidence factor P is
Calculating only in the first operating state, P ₁ = [(2x3x0.6) + (2x2x0.6) + (5x1x0.4)] / 36 = 2
2.2%, including the second operating state, P ₂ = [(6x3x0.6) + (5x2x0.6) + (8x1x0.4)] / 36 = 5
It will be 5.5%. Of course, as such a calculation method, another rational calculation method may be used.

Table 3 shows an example of the degree of the abnormal state calculated as described above, that is, an example of the diagnostic result, and Table 4 shows the cause and effect of the T / C (turbocharger) bearing damage in the abnormal state. One operation state, that is, the content of the diagnostic element is shown. Any of these tables can be displayed on the analysis CRT 31. The large, medium, and small impacts in this table are A shown in Tables 1 and 2,
It corresponds to B and C. The numbers in the left column show the numbers of abnormal condition items in Table 3 and the numbers of operating condition items in Table 4.

[Table 3]

[0030]

[Table 4] Table 5 shows an example in which the second operating state having a causal relationship with the T / C bearing damage is displayed in the analysis CRT 31 in a question format. In the other items except 102, the character of the driving state itself indicates the reference state. That is, since the surging, the abnormal sound, and the rotational speed hunting do not normally occur, "NO" in the arrow selection column in the drawing is the reference state. In item 102,
It is also possible to show the numerical reference state, that is, the reference value of the maximum pressure in the cylinder, and the degree to which the measured value deviates from the reference value (low degree), but this is not explicitly shown in this example, and is held by the engine operator. Data and judgment criteria.

[0031]

[Table 5]

However, for those items that can numerically indicate the reference value and the degree of difference, a reference value column is provided and the question content is "the difference from the reference value is larger than 10 kgf / cm ^{2 and} smaller than 10 kgf / cm ^2. It is possible to further reduce the driver's burden by displaying such as “” and only making a selection. The items in this example cannot be detected by the sensor.
Regarding the maximum pressure in the cylinder of item 102,
Durable sensors that can operate under high pressure conditions are hard to come by and are expensive to automatically measure on all cylinders.

The item of the second operation state is transmitted to the ship side and put in the ship side communication computer 1, and the ship side CRT 1
1 can be displayed. The computer 1 on the ship side is arranged in, for example, the wheelhouse, and when a transmission from the land side is received, an alarm sounds and the engine manager or engineer who is in charge of the engine is notified. Then, the ship side CRT 11 confirms the inquiry items which are the contents of communication, enters the engine room, and investigates them. In some cases, the investigation may be requested by telephone to another engineer who is operating and monitoring in the engine room. As a result of examining such a second operation state,
In the example of Table 5, the same screen is used to display the keyboard 12 on the ship side.
You can input by moving the cursor to the relevant place. In the figure, the black squares indicate the answers. That is, an item 158 having a medium degree of influence
It shows that the surging was quite large. The contents are input to the analysis computer 3 on the land side again via the communication computers 1 and 2.

Table 6 shows the result of recalculation by the analysis computer 3 by the above input and its diagnostic element. In this recalculation, the input second operating state is corrected by the same calculation method as the calculation in the first operating state. This recalculation result can be displayed on the analysis CRT 31 by operating the analysis keyboard 32. In this example, as shown in Table 7, the contents of the treatment based on the result can be displayed.

[Table 6]

[0035]

[Table 7] As described above, the diesel engine support device of the present invention has an engine diagnosis function, and in addition, various functions such as an engine data trend analysis function, an engine maintenance management function, and a spare parts management function are added to the diesel engine support device. It is desirable to make it a comprehensive support device for engine operation and maintenance. In that case, as shown by the chain double-dashed line in FIG. 1, other operating states other than the operating state for engine diagnosis are detected by the sensors 5'added as necessary, or the boat side keyboard 12 is used.
Use to to enter the data manually and send the necessary data to the land side. At this time as well, the various computers, storage devices, and the like described above can be used.

FIGS. 2 to 4 show the relationship between the engine speed and the output using the analysis computer 3 and its CRT screen as an example of trend analysis by the diesel engine support device configured as described above. , Rotational speed, propeller blade angle and FO rack scale with time, and performance changes of turbocharger speed, supply pressure, cylinder outlet exhaust temperature and supercharger inlet exhaust temperature are analyzed and displayed. The result is shown. In this example, the data for two months is displayed, but it may be displayed in units of days or years.

According to such a trend analysis function, a huge amount of various kinds of long-term data can be easily organized and analyzed / displayed, and a diesel engine which cannot be easily understood only by a logbook recorded on a normal ship. It is possible to very easily and accurately know the operating state and the tendency of changes in performance. And according to the result of such trend analysis,
It is also possible to correct the base data that is the basis of the diagnostic function, and to further enhance the final judgment of the diagnostic function. or,
More accurate support for ship operation and maintenance can be provided.

[0038]

The transmitting / receiving sections provided on the ship side and the land side can input the detected value of the first operating state to the analysis section provided on the land side. The analysis unit first calculates the degree of difference between these detected values and the reference value held in the storage unit, and then from the storage unit, the causal relationship between the abnormal state of the diesel engine and the first operating state. Is extracted, and the degree of the abnormal state as far as the first operating state is specifically calculated as a numerical value. However, at this stage, since the causal relationship of the second operating state has not been taken into consideration, the certainty factor of the calculation result is still insufficient.

The land-side expression unit retrieves from the storage unit all the items of the specific second operating state that have a causal relationship with the target abnormal state calculated by the calculation unit and are not automatically detected. Can be expressed. All of these items cannot be easily figured out for the time being, even by a high-level diesel engine engineer, but with this expression section, anyone can instantly know all of them. it can.

Since the ship-side expression unit can express the items displayed on the land-side expression unit via the land-side and ship-side communication units, the crew member of the ship equipped with the diesel engine can express the expression items. You can check and check the degree of difference between these items and the standard condition. The result can be input to the analysis unit via the ship-side and land-side transmission / reception units, and the analysis unit recalculates the degree of abnormal state by taking this input into account and expresses it on the land-side expression. Since the recalculation result can be expressed in the section, finally, the diagnostic result including all the operating states that have a causal relationship with the abnormal state is included in the calculation, and the reliability of the diesel engine diagnostic result is significantly improved. . And according to such a diagnosis function of the support device, since it is almost unnecessary to incorporate human thoughts and judgments,
It can be diagnosed uniformly and objectively, and does not require an engine engine with a high level of technical skill.

Further, in the present invention, the operating state related to the diesel engine is divided into the first operating state and the second operating state,
Only the operating state is automatically detected, but the second operating state is also added to the judgment. Therefore, the sensor for automatic detection has been developed and is practical and reliable. It is sufficient to use only those that do not cost too much. In particular, the main engine diesel engine for ship propulsion often has a large number of cylinders, and installing various automatic detection instruments for each cylinder of such a multi-cylinder engine unnecessarily increases the cost, but such a problem Is also solved. Therefore, according to the present invention, highly accurate engine diagnosis can be performed without complicating the structure of the engine or increasing the cost. According to such a reliable diagnosis result, it is possible to contribute to the rationalization of maintenance and the ensuring of operation safety.

In this case, since a simple device having a display and an input part as a device having a computer function only needs to be provided on the ship side, the equipment cost is extremely low, and the cost of the coastal ship is low. Even if the ship has a small space like this, you can easily secure the installation space,
For example, it may be installed in the wheelhouse where the ship operator is resident. Further, since the device of this degree is easy to operate, even a crew member of the ship can easily learn the handling method.

On the other hand, the land side is provided with a multi-functional analysis unit and a storage unit capable of holding a large amount of data. Since these are devices common to many ships, they are equipped for each ship. Compared with this, a large reduction in equipment can be achieved for the support device as a whole. Then, if a person who is familiar with the operation of the computer and the like is centrally managed at one place on land, the labor saving of the whole support system can be achieved. In this case, the normal operator on land does not necessarily have to be an advanced engineer of the diesel engine, but may simply be a person who can operate the OA equipment. Then, by installing the onshore part of the support device at, for example, an engine manufacturing plant, all data and expertise of the engine, including design data, etc., can be utilized as necessary to operate and maintain the diesel engine. Can be supported more accurately. Therefore, according to the support system as in the present invention, it is possible to effectively utilize people and materials. .

Further, in the diesel engine support device having a portion having an analysis function and a memory function for exchanging data between the ship side and the land side as in the present invention, by adding detection items and calculation analysis items, Various functions such as engine trend analysis, maintenance, spare parts management, etc. can be added to easily become a comprehensive support device for diesel engine operation and maintenance, and land support can be enhanced. Become.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration example of a diesel engine support device to which the present invention has been applied.

FIG. 2 is a curve diagram showing an example of an analysis result when the device has a trend analysis function.

FIG. 3 is a curve diagram showing another example of the trend analysis result.

FIG. 4 is a curve diagram showing still another example of the trend analysis result.

[Explanation of symbols]

 1 Ship side communication computer (ship side transmitter / receiver) 2 Land side communication computer (land side transmitter / receiver) 3 Analysis computer (analysis part) 4 Storage device (storage part) 11 Ship side CRT (ship side expression part) 12 Ship side keyboard (ship side input part) 31 Analytical CRT (landside expression department)

Claims (1)

[Claims] 1. A first operating condition related to the diagnosis of a diesel engine, which comprises a first operating condition and a second operating condition.
A diesel engine support device for automatically handling the operation of a diesel engine, which is designed to automatically detect an operating state, and which includes a plurality of the ships, and a ship-side transceiver installed on each ship. Unit, a ship side expression unit, a ship side input unit, a land side transmission / reception unit installed on land, an analysis unit, a storage unit, and a land side expression unit, wherein the ship side transmission / reception unit detects the first operating state. To the land side and receive the transmission from the land side, the land side transceiver unit receives and outputs the transmission from the ship side and transmits the input content to the ship side, the storage unit, the storage unit, 1 reference value of the operating state, a plurality of abnormal states of the diesel engine and a correlation of the degree of a predetermined causal relationship with each of the operating state items, the analysis unit, the land side Send and receive Output and the reference value of the storage unit are input and compared to calculate the degree of the difference, and from the degree of the difference and the degree of the causal relationship of the first operating state extracted from the storage unit. The degree of the abnormal state is calculated for each of the abnormal states, and the land-side expression unit is an item of the specific second operating state that is correlated with at least one specific abnormal state of the abnormal states calculated by the analysis unit. Can be expressed by extracting from the storage unit, the ship side expression unit can express the specific second operating state via the land side transmitter / receiver unit and the ship side transmitter / receiver unit, and the ship side input unit can be the specific second unit. The degree of difference between the operating state and its reference state can be input, and the analysis unit further determines the specific abnormality by the degree of the causal relationship between the input of the ship side input unit and the second operating state extracted from the storage unit. Degree of condition Recalculated, the landside expression unit may further represent a calculation result of the recalculation unit, diesel engine assist system according to claim.