JPH0586890A - Abnormal condition detection by engine generator - Google Patents

Abstract

PURPOSE:To take countermeasures for driving abnormality by computing a real driving data in accordance with a driving condition detection data of an engine and an output data of a generator and by displaying an abnormal part in advance after comparing the real driving data and a standard performance table with each other. CONSTITUTION:A generator 2 is driven by an engine 1 with a supercharger in an engine generator. Output change of the generator 2, engine speed change of the engine 1 and change of intake pressure are input to a drive control device 3 as driving condition detection data. In this case, a memory part 4 and a computing part 5 are arranged in the drive control device 3. Additionally, a standard performance table of the engine generator is memorized in the memory part 4. Additionally, a real driving data is computed in accordance with a generator output data and the driving condition detection data in the computing part 5. Thereafter, the standard performance table and the real driving data are compared with each other, and an abnormal part is presumed in accordance with their discrepant amount. Thereafter the abnormal part is displayed in advance on a display device 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection method for detecting an abnormal operating condition in an engine power generator.

[0002]

2. Description of the Related Art Conventionally, in an engine power generator, the operating state of the engine is monitored by individually detecting the cooling water temperature and the lubricating oil pressure, and the engine is stopped when the detected values show abnormal values. Was there.

[0003]

However, in the conventional abnormality detecting method, the engine is stopped after the equipment fails and an abnormality occurs. Therefore, after the engine is stopped, a maintenance call is made or parts are procured. Therefore, there is a problem that the engine stop period becomes long and work is hindered. There is also a problem that if the engine suddenly stops during work, the worker will lose power without taking measures against power failure.

Further, in the conventional engine generator, the replacement time is set for each part so that the parts can be replaced even when there is no abnormality in the parts, which results in high maintenance cost and resource saving. There was a problem. The present invention focuses on such a point, and provides a driving abnormal state detection method that enables early countermeasures by predicting and warning the occurrence of abnormality before the engine falls into an abnormal state. With the goal.

[0005]

In order to achieve the above-mentioned object, the present invention stores a standard performance table of an engine power generator in an engine operation control device, and uses an operating state detection data detected from the engine and a generator. Input the detected power generation output data to the operation control device to calculate actual operation data, compare the actual operation data with the standard performance table,
When the amount of deviation between the actual operation data and the standard performance table exceeds a certain range, self-diagnosis is performed to estimate the abnormal point from each value of the actual operation data, and the abnormal point is displayed in advance based on the result of the self-diagnosis. It is characterized in that it is configured.

[0006]

In the present invention, the engine performance controller stores the standard performance table of the engine power generator, and the operating condition detection data detected from the engine and the power generation output data detected from the generator are input to the operation controller. Calculate the actual operation data, compare this actual operation data with the standard performance table, and if the deviation between the actual operation data and the standard performance table is within a certain range, estimate the abnormal point from each value of the actual operation data. Since the self-diagnosis is performed and the abnormal point is displayed in advance based on the result of the self-diagnosis, by detecting the abnormal point advance notice, it is possible to take preventive measures before the operation abnormality occurs.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the method of the present invention, FIG. 1 is a control flow chart, and FIG. 2 is a control conceptual diagram in an engine generator. This engine generator is a supercharged engine (1)
Drive the generator (2) with, and the output change from the generator (2),
A change in engine speed and a change in air supply pressure are input to the operation control device (3) as operation state detection data.

A storage unit (4) and a calculation unit (5) are arranged in the operation control unit (3), and a standard performance table of the engine generator is stored in the storage unit (4). .. Further, the calculation unit (5) calculates actual operation data from the input operation state detection data such as the engine speed and supply pressure and the generator output data. When it is found from the comparison between the standard performance table and the actual operation data that the engine has an abnormal portion, the display device (6)
Is configured to display a notice of abnormality.

As shown in the flow chart of FIG. 1, the abnormality determination procedure in the driving performance device (3) calculates actual driving data from the driving state detection data and the generator output data (step S
1). This actual operation data is compared with the standard performance table shown in FIG. 3 (step S2), and when the actual operation data is within the two-dot chain line area of FIG. 3, that is, when the deviation amount is within a certain range, If it is determined that the operating state is normal and the actual operating data is outside the two-dot chain line area, that is, if the deviation amount is outside the certain range, it is determined that the operating state is in transition to the abnormal state (step S3). ).

When it is determined in the above determination procedure that an abnormal state is being entered, the individual values of the operating state detection data of the actual operating data and the generator output data are checked to estimate the location of abnormality or the location of deterioration. In order to do so, self-diagnosis is performed (step S4), and if it is determined that an abnormality has occurred or deterioration has started as a result of self-diagnosis (step S5), an abnormality signal is output to the display device (6) (step S6), and the display device (6) A notice of abnormality is given on the display corresponding to the estimated abnormality occurrence point or deterioration start point.

It should be noted that this notice of abnormality is given without stopping the engine. Therefore, when the work is in progress, the work can be continued, and after the work has completed one stage, the abnormal portion can be inspected and maintained, or the maintenance call can be made. As a result, the maintenance time can be set arbitrarily, so that workability is not impaired. If you continue driving without checking and servicing the abnormal part after the abnormal notice is given, the abnormal condition will progress and you will be in a dangerous driving state.In that case, you can make an emergency stop as usual. I am doing it.

[0012]

According to the present invention, the standard performance table of the engine generator is stored in the engine controller, and the operating condition detection data detected from the engine and the power output data detected from the generator are input to the controller. Then, the actual operation data is calculated, and this actual operation data is compared with the standard performance table.If the deviation amount between the actual operation data and the standard performance table is within a certain range, the abnormal point is detected from each value of the actual operation data. It is configured to perform a self-diagnosis to estimate the situation and display a notice of the abnormal point based on the result of the self-diagnosis.Therefore, by detecting the notice of the abnormal point, it is possible to take preventive measures before the error occurs. it can. As a result, the maintenance time can be set to an arbitrary date and time after the advance notice is displayed, so that workability is not impaired.

Further, since the abnormality notice is displayed due to the occurrence of the abnormal tendency, it is not necessary to set the replacement time for each part, and the life of the parts can be used to the limit. As a result, maintenance costs can be reduced.

[Brief description of drawings]

FIG. 1 is a flowchart showing a specific example of a control method.

FIG. 2 is a conceptual diagram of control in the engine power generator.

FIG. 3 is a diagram showing an example of a standard performance table.

[Explanation of symbols]

1 ... Engine, 2 ... Generator, 3 ...
Operation control device.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F02D 45/00 376 H 8109-3G

Claims (1)

[Claims] 1. An engine power generator configured to drive a generator (2) with an engine (1), wherein a standard performance table of the engine power generator is stored in an engine operation controller (3), and the engine (1) is stored. ) Input the operation state detection data detected from) and the power generation output data detected from the generator (2) to the operation controller (3) to calculate the actual operation data, and compare the actual operation data with the standard performance table. However, if the amount of deviation between the actual operation data and the standard performance table exceeds a certain range, self-diagnosis is performed by estimating the abnormal point from each value of the actual operation data, and the abnormal point is displayed in advance based on the result of the self-diagnosis. Of detecting abnormal condition in engine generator configured as described above.