CN110533255B - Engine maintenance time prediction method, device, equipment and storage medium - Google Patents
Engine maintenance time prediction method, device, equipment and storage medium Download PDFInfo
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Abstract
The disclosure provides an engine maintenance time prediction method, an engine maintenance time prediction device, engine maintenance time prediction equipment and a storage medium, and relates to the field of mechanical equipment. The method comprises the following steps: the method comprises the steps of obtaining filter element loss data of an oil way filter at least twice at different times before the current moment, wherein the filter element loss data comprise oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure, determining oil outlet oil pressure falling slope of the oil way filter based on the filter element loss data at least twice different times, and determining maintenance time information of an engine based on the oil outlet oil pressure falling slope and a preset oil outlet oil pressure threshold. The method and the device can solve the problem that the maintenance time prediction of the engine is inaccurate in the prior art.
Description
Technical Field
The present disclosure relates to the field of mechanical devices, and in particular, to an engine maintenance time prediction method, an apparatus, a device, and a storage medium.
Background
With the development of mechanical technology, the application range of various mechanical equipment is wider and wider, and the mechanical equipment plays an important role in aspects of transportation, mineral development, water conservancy construction, road construction and the like. In general, an engine is provided in a machine, and the performance of the engine directly affects the life of the machine, so that maintenance of the engine is required.
In the prior art, a fuel oil path or a lubricating oil path of an engine is provided with an oil path filter, and the oil path filter can be gradually blocked along with the use of the engine, so that the engine is possibly damaged, the running time of the engine can be counted, and when the accumulated running time of the engine reaches the preset running time, the engine is determined to be required to be maintained.
However, since the working conditions of the mechanical equipment are not stable, the loss conditions of the oil filter in the engine are not the same correspondingly, and the maintenance prediction is not accurate by a single mode of counting the running time of the engine.
Disclosure of Invention
The disclosure aims to provide an engine maintenance time prediction method, device, equipment and storage medium, so as to solve the problem that the maintenance time prediction of an engine is inaccurate in the prior art.
In order to achieve the above purpose, the technical scheme adopted in the present disclosure is as follows:
in a first aspect, the present disclosure presents a method of engine maintenance prediction, the method comprising:
acquiring filter element loss data of an oil way filter at least twice at different times before the current moment, wherein the filter element loss data comprises oil pressure of an oil outlet of the oil way filter and detection time information corresponding to the oil pressure of the oil outlet;
Determining an oil outlet oil pressure drop slope of the oil way filter based on the filter element loss data of at least two different times;
and determining maintenance time information of the engine based on the oil outlet oil pressure drop slope and a preset oil outlet oil pressure threshold value.
Optionally, the detection time information is used for indicating a total duration that the engine speed is greater than or equal to a preset speed threshold, and the method further includes:
acquiring the engine speed and counting the operation time length when the engine speed is greater than or equal to the preset speed threshold;
when the operation time length is increased to be equal to the integral multiple of a preset operation time length threshold value, acquiring current oil pressure of an oil outlet of the oil way filter and current detection time information;
storing the current oil outlet oil pressure and the current detection time information into a historical filter element loss database;
the obtaining of the filter element loss data of the oil way filter at least twice at different times before the current moment comprises the following steps:
and acquiring the filter element loss data of at least two different times from the historical filter element loss database.
Optionally, the acquiring the filter element loss data of the oil path filter at least twice at different times before the current moment includes:
And acquiring the two times of filter element loss data closest to the current moment.
Optionally, the determining maintenance time information of the engine based on the slope of the oil pressure drop of the oil outlet and a preset oil pressure threshold value includes:
and calculating and acquiring the maintenance time information based on the oil outlet oil pressure drop slope, the preset oil outlet oil pressure threshold, filter element loss data which is closer to the current moment in the filter element loss data of at least two times of different times, and a preset algorithm.
Optionally, the maintenance time information includes a remaining running time of the engine, and after the determining the maintenance time information of the engine based on the slope of the drop of the oil pressure of the oil outlet and a preset oil pressure threshold value, the method further includes:
when the residual running time is greater than or equal to a first preset time threshold value and less than a second preset time threshold value, a maintenance reminding signal is sent out;
when the residual running time is smaller than the first preset time threshold value, an engine locking signal is sent out;
wherein the first preset time threshold is less than the second preset time threshold.
In a second aspect, the present disclosure also proposes an engine maintenance prediction apparatus, the apparatus comprising:
The first acquisition module is used for acquiring filter element loss data of the oil way filter at least twice at different times before the current moment, wherein the filter element loss data comprises oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure;
the first determining module is used for determining the oil pressure drop slope of the oil outlet of the oil way filter based on the filter element loss data of at least two different times;
the second determining module is used for determining maintenance time information of the engine based on the oil outlet oil pressure descending slope and a preset oil outlet oil pressure threshold value.
Optionally, the detection time information is used for indicating a total duration that the engine speed is greater than or equal to a preset speed threshold, and the device further includes:
the second acquisition module is used for acquiring the engine speed and counting the operation duration of the engine speed which is greater than or equal to the preset speed threshold;
the third acquisition module is used for acquiring the current oil pressure of the oil outlet of the oil way filter and the current detection time information when the operation time is increased to be equal to the integral multiple of the threshold value of the preset operation time;
the storage module is used for storing the current oil outlet oil pressure and the current detection time information into a historical filter element loss database;
The first obtaining module is specifically configured to:
and acquiring the filter element loss data of at least two different times from the historical filter element loss database.
Optionally, the first obtaining module is specifically configured to:
and acquiring the two times of filter element loss data closest to the current moment.
Optionally, the second determining module is specifically configured to:
and calculating and acquiring the maintenance time information based on the oil outlet oil pressure drop slope, the preset oil outlet oil pressure threshold, filter element loss data which is closer to the current moment in the filter element loss data of at least two times of different times, and a preset algorithm.
Optionally, the maintenance time information includes a remaining running time of the engine, and the apparatus further includes:
the first reminding module is used for sending a maintenance reminding signal when the residual running time is greater than or equal to a first preset time threshold value and smaller than a second preset time threshold value;
the second reminding module is used for sending out an engine locking signal when the residual running time is smaller than the first preset time threshold value;
wherein the first preset time threshold is less than the second preset time threshold.
In a third aspect, the present disclosure also proposes an engine maintenance prediction apparatus comprising: a processor, a storage medium storing machine-readable instructions executable by the processor, the processor in communication with the storage medium via the bus when the engine maintenance pre-test device is running, the processor executing the machine-readable instructions to perform the steps of the method as described in the first aspect above.
In a fourth aspect, the present disclosure also proposes a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, performs the steps of the method of the first aspect.
In the embodiment of the disclosure, filter element loss data of an oil way filter at least twice before the current moment can be obtained, wherein the filter element loss data comprises oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure, the oil outlet oil pressure descending slope of the oil way filter can be accurately determined based on the filter element loss data of at least twice different times, the oil outlet oil pressure descending slope can be used for describing the trend of gradually descending the oil outlet oil pressure, namely, the descending trend of the working performance of the oil way filter is described, and maintenance time information of an engine is determined based on the oil outlet oil pressure descending slope and a preset oil outlet oil pressure threshold value, so that the engine is accurately maintained according to the loss condition of the oil way filter, and the possibility of engine damage is reduced.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the disclosure. The objectives and other advantages of the disclosure will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
For a clearer description of the technical solutions of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present disclosure and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 illustrates a schematic diagram of an engine maintenance prediction system provided by the present disclosure;
FIG. 2 illustrates a flow diagram of an engine maintenance prediction method provided by the present disclosure;
FIG. 3 illustrates a schematic view of a maintenance time prediction provided by the present disclosure;
FIG. 4 illustrates a flow chart of another engine maintenance prediction method provided by the present disclosure;
FIG. 5 shows a functional block diagram of an engine maintenance prediction device provided by the present disclosure;
FIG. 6 illustrates a functional block diagram of another engine maintenance prediction device provided by the present disclosure;
FIG. 7 illustrates a functional block diagram of another engine maintenance prediction device provided by the present disclosure;
fig. 8 shows a functional block diagram of an engine maintenance prediction apparatus provided by the present disclosure.
Detailed Description
The technical solutions in the present disclosure will be clearly and completely described below with reference to the drawings in the present disclosure.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Before explaining the present disclosure in detail, an application scenario of the present disclosure is described.
In general, an engine is provided in a machine to obtain power, such as an automobile and various construction machines. The engine comprises a fuel oil way and a lubricating oil way, in order to filter fuel oil and lubricating oil, the fuel oil way and the lubricating oil way can be provided with an oil way filter, and the performance of the oil way filter is reduced along with the continuous increase of the use date, so that the filtering effect of the fuel oil and the lubricating oil is reduced, the problems of poor fuel oil combustion effect, weak working and abrasion of a mechanical hydraulic part are caused, the service life and the safety of the engine and mechanical equipment are influenced, and therefore, the engine needs to be maintained, and the maintenance time of the engine is also correspondingly required to be predicted.
Referring to fig. 1, a schematic structure diagram of an engine maintenance prediction system provided in the present disclosure is shown. The system 100 may include a pressure sensor 101, a memory 102, a controller 103, an ECM (Engine Control Module ) 104, and a display 105, wherein the pressure sensor 101 may be disposed at an outlet of an oil filter of a mechanical device, and the controller 103 is communicatively coupled to the pressure sensor 101, the memory 102, the ECM104, and the display 105, respectively.
The pressure sensor 101 is used for detecting the oil outlet oil pressure of the oil outlet of the oil path filter and detecting time information of the oil outlet oil pressure, and when the filter element in the oil path filter is gradually blocked, the oil outlet oil pressure is gradually reduced. The pressure sensor 101 in the present disclosure may also send the oil outlet oil pressure and detection time information for detecting the oil outlet oil pressure to the controller 103, and the controller 103 may write the oil outlet oil pressure and detection time information for detecting the oil outlet oil pressure to the memory 102.
The oil path filter can be arranged in the fuel oil path and/or the lubricating oil path, so that the engine maintenance prediction method provided by the disclosure predicts the engine maintenance time.
Memory 102 may be used to store data related to engine maintenance predictions, such as cartridge loss data, such as oil outlet oil pressure and sensed time information, as well as other preset data and intermediate data required by the engine maintenance prediction process.
The filter element loss data can be used for describing the loss condition of the filter element in the engine oil-way filter. The detection time information is used for describing and detecting the oil pressure of the oil outlet, and can comprise actual time or other predefined duration.
For example, from 7.7.7.early morning, the oil outlet oil pressure is detected every 1 hour, the detection time information may include the actual time at which the oil outlet oil pressure is detected, i.e., 1.7.7.7.1, 2.7.7.7, 3.7.7, etc., or the detection time information may include the cumulative time period at which the detection is started, i.e., 1 hour, 2 hours, 3 hours, etc. In practical applications, the detection time information may be determined by the controller 103, which is not limited to the above example.
The ECM104 may be a core component for engine control, control fuel injection and ignition timing of the engine based on input from various sensors, and provide control commands to other output devices.
The ECM104 may be communicatively coupled to the controller 103 via a CAN (Controller Area Network ) bus, among other things.
The display 105 may be used to interact with a user, such as to display to the user the results of making engine maintenance predictions, the manner in which engine maintenance is to be performed, and the like.
The display 105 may be displayed through a pop-up window or other manners, and the display manner of the display 105 is not specifically limited in this disclosure.
The controller 103 is configured to interact with the pressure sensor 101, the memory 102, the ECM104, and the display 105, including sending operating instructions related to engine maintenance predictions to the pressure sensor 101, the memory 102, the ECM104, and the display 105, and retrieving information related to engine maintenance predictions from the pressure sensor 101, the memory 102, the ECM104, and the display 105.
Additionally, in another alternative embodiment of the present disclosure, one or more of the memory 102, controller 103, and display 105 may be located within the machine or may be located external to the machine.
The present disclosure will be specifically described below in connection with the above application scenario.
Referring to fig. 2, a flow chart of an engine maintenance prediction method provided by the present disclosure is shown. The method may be applied to the controller 103 shown in fig. 1. It should be noted that, the engine maintenance prediction method according to the present disclosure is not limited by the specific order shown in fig. 2 and described below, and it should be understood that, in other embodiments, the order of some steps in the engine maintenance prediction method according to the present disclosure may be interchanged according to actual needs, or some steps may be omitted or deleted. The flow shown in fig. 2 will be described in detail.
Step 201, obtaining filter element loss data of at least two times of different times before the current moment of the oil way filter, wherein the filter element loss data comprises oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure.
With the use of an oil way filter in an engine, the oil way filter can be gradually blocked, the oil pressure of an oil outlet can be gradually reduced, and in order to determine the loss condition of a filter element in the oil way filter, the time for maintaining the engine is predicted, and the oil pressure of the oil outlet, the detection time information corresponding to the oil pressure of the oil outlet and other filter element loss data can be obtained.
Cartridge loss data for at least two different times prior to the current time may be retrieved from memory 102 and cartridge loss data in memory 102 may be detected and stored by pressure sensor 101.
Step 202, determining the oil pressure drop slope of an oil outlet of the oil way filter based on the filter element loss data of at least two different times.
Because the filter element loss data comprises the oil outlet oil pressure of the oil way filter and the detection time information corresponding to the oil outlet oil pressure, the falling slope of the oil outlet oil pressure can be determined based on the filter element loss data of at least two different times, the falling slope of the oil outlet oil pressure can be used for determining the falling trend of the oil outlet oil pressure, namely the speed of the filtration performance attenuation of the oil way filter, and when the slope is larger, the faster the filtration performance attenuation of the oil way filter is indicated, and the oil way filter is close to being completely blocked.
The filter element loss data of different times can be selected from the filter element loss data of at least two times of different times, and the difference value of the oil outlet oil pressure in the filter element loss data of the two times is divided by the difference value of detection time information (namely, the time interval for detecting the oil outlet oil pressure of the two times), and the ratio of the difference value of the oil outlet oil pressure to the difference value of the detection time information is the falling slope of the oil outlet oil pressure.
For example, the filter element loss data is obtained including P 1 、t 1 、P 2 、t 2 Wherein t is 1 Is P 1 Corresponding detection time information, t 2 Is P 2 Corresponding detection time information, the falling slope of the oil pressure of the oil outlet is
It should be noted that, the filter element loss data of two different times may be randomly selected from the filter element loss data of at least two different times, or the filter element loss data of two different times closest to the current may be selected from the filter element loss data of at least two different times, or the filter element loss data of two different times may be selected according to other preset selection manners, where the manner of selecting the filter element loss data of two different times from the filter element loss data of at least two different times is not specifically limited.
In addition, in another alternative embodiment of the disclosure, a plurality of oil-outlet oil pressure drop slopes may be calculated based on any two adjacent filter core loss data of at least two different times, and the maximum oil-outlet oil pressure drop slope may be obtained from the plurality of oil-outlet oil pressure drop slopes as the finally determined oil-outlet oil pressure drop slope of the oil-way filter.
Step 203, determining maintenance time information of the engine based on the oil outlet oil pressure drop slope and a preset oil outlet oil pressure threshold value.
In order to facilitate predicting the timing of engine maintenance according to the loss condition of the oil-way filter, thereby enabling a user to maintain the engine in advance and reducing the possibility of engine damage, maintenance time information of the engine can be determined based on the oil-outlet oil pressure drop slope and a preset oil-outlet oil pressure threshold value.
The preset oil outlet oil pressure threshold may be used to indicate a minimum oil outlet oil pressure for normal operation of the engine. The preset oil outlet oil pressure threshold may be preset, for example, the pressure value submitted by the user may be received by the controller 103 in advance as the preset oil outlet oil pressure threshold, and the preset oil outlet oil pressure threshold may be stored in the memory 102.
The maintenance time information may be used to indicate the timing of maintenance of the engine, and may include a point in time or a period of time.
A preset oil outlet oil pressure threshold may be retrieved from memory 102 and maintenance time information for the engine may be determined based on the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold.
Wherein, filter element loss data can be selected from filter element loss data of at least two different times before the current moment, when maintenance time information is determined based on the oil outlet oil pressure, the oil outlet oil pressure drop slope and a preset oil outlet oil pressure threshold value in the filter element loss data, the ratio of the difference value between the oil outlet oil pressure in the filter element loss data and the preset oil outlet oil pressure threshold value to the oil outlet oil pressure drop slope can be determined as the maintenance time information, and the maintenance time information can comprise the residual running time of the engine. Or when determining maintenance time information based on the oil outlet oil pressure in the filter element loss data, the detection time information, the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold value, determining a ratio of a difference value between the oil outlet oil pressure in the filter element loss data and the preset oil outlet oil pressure threshold value to the oil outlet oil pressure drop slope, determining a sum of the ratio and the detection time information as maintenance time information, wherein the maintenance time information can be used for indicating a time point of maintenance of the engine.
For example, the slope of the drop of the oil pressure at the oil outlet of the oil line filter is k, and the preset oil pressure threshold value isSelecting one filter element loss data from the filter element loss data at least two different times before the current time, including P 2 、t 2 Then determine the maintenance time information as +.>Or->Wherein t is x T 'for the remaining operating time of the engine' x Indicating the point in time at which maintenance is to be performed on the engine.
It should be noted that, the method of selecting the filter element loss data from the filter element loss data at least two times before the current moment is not particularly limited, and the filter element loss data may be randomly selected from the filter element loss data at least two times before the current moment, or the filter element loss data closest to the current moment is selected, or the filter element loss data is selected according to other preset selecting methods.
Of course, in practical application, maintenance time information of the engine may be determined based on the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold in other manners, for example, a corresponding relationship between the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold submitted by a related technician and the maintenance time information may be received, so that the corresponding maintenance time information may be obtained from the corresponding relationship between the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold and the maintenance time information based on the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold.
In the embodiment of the disclosure, filter element loss data of an oil way filter at least twice before the current moment can be obtained, wherein the filter element loss data comprises oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure, the oil outlet oil pressure descending slope of the oil way filter can be accurately determined based on the filter element loss data of at least twice different times, the oil outlet oil pressure descending slope can be used for describing the trend of gradually descending the oil outlet oil pressure, namely, the descending trend of the working performance of the oil way filter is described, and maintenance time information of an engine is determined based on the oil outlet oil pressure descending slope and a preset oil outlet oil pressure threshold value, so that the engine is accurately maintained according to the loss condition of the oil way filter, and the possibility of engine damage is reduced.
Optionally, the detecting time information is used for indicating a total duration that the engine speed is greater than or equal to a preset speed threshold, the engine speed may be obtained and an operation duration that the engine speed is greater than or equal to the preset speed threshold may be counted, when the operation duration increases to be equal to an integer multiple of the preset operation duration threshold, current oil outlet oil pressure and current detecting time information of the oil way filter are obtained, the current oil outlet oil pressure and the current detecting time information are stored in a historical filter element loss database, and accordingly, the operation of obtaining filter element loss data of the oil way filter at least twice different times before the current time in step 201 may include: filter element loss data for at least two different times is obtained from a historical filter element loss database.
When the engine speed is low, the consumed fuel oil or lubricating oil is small, and thus the loss of the oil path filter is negligible, so in order to further accurately predict the time for engine maintenance, the filter element loss data can be detected and acquired according to the engine speed, and the detected filter element loss data can be stored in a filter element loss database.
The engine speed may be obtained by the controller 103 from the ECM104 via a communication bus in the machine.
The predicted rotational speed threshold may be obtained by a preset. For example, the rotational speed submitted in advance by the user may be received by the controller 103 as the preset rotational speed threshold, and the preset rotational speed threshold may be stored in the memory 102.
The preset operation time threshold may be obtained by setting in advance. For example, the duration submitted in advance by the user may be received by the controller 103 as the preset operation duration threshold, and the preset operation duration threshold may be stored in the memory 102.
When the detection time information is used for indicating the total duration that the engine speed is greater than or equal to the preset speed threshold, the detection time information may be an integer multiple of the preset operation duration threshold.
The controller 103 may obtain the engine speed from the ECM104, obtain the preset operation duration threshold and the predicted speed threshold from the memory 102, count the operation duration that the engine speed is greater than or equal to the preset operation duration threshold, and when the operation duration increases to be equal to an integer multiple of the preset operation duration threshold, control the pressure sensor 101 to obtain the current oil outlet oil pressure and the current detection time information of the oil circuit filter, and store the current oil outlet oil pressure and the current detection time information in the historical filter element loss database in the memory 102. That is, in the case where the engine speed is greater than or equal to the preset speed threshold, the pressure sensor 101 may detect the current oil outlet oil pressure every time a duration corresponding to the preset operation duration threshold, and store the current oil outlet oil pressure and the current detection time information to the memory 102.
Optionally, when the detection time information may be an integer multiple of a preset operation time threshold, the detection time information corresponding to the oil pressures of the adjacent two oil outlets is a fixed time, the detected oil pressures of the oil outlets may be stored according to the detected order, and then the total time between any two oil pressures of the oil outlets, in which the engine speed is greater than or equal to the preset operation time threshold, may be determined according to the order of the oil pressures of any two oil outlets, so that the detection time information does not need to be stored.
Optionally, the operation of obtaining the filter element loss data of the oil filter at least twice different times before the current time in step 201 may include: and acquiring the two times of filter element loss data closest to the current moment. Accordingly, the historical cartridge loss database may store only two cartridge loss data that are closest to the current time.
The filtering efficiency of the oil way filter can be gradually bad along with the increase of the working time, and the more the filter element loss data close to the current moment changes, the more the nearest loss condition of the oil way filter can be described, so that in order to predict the maintenance time of the engine as much as possible in real time, the accuracy of predicting the maintenance time of the engine is further improved, and the two times of filter element loss data closest to the current moment can be obtained.
Optionally, the operation of determining maintenance time information of the engine in step 203 based on the slope of the drop in the oil pressure of the oil outlet and the preset oil pressure threshold may include: and calculating and acquiring maintenance time information based on the oil outlet oil pressure drop slope, a preset oil outlet oil pressure threshold value, filter element loss data which is closer to the current moment in filter element loss data of at least two times of different times, and a preset algorithm.
The filtering efficiency of the oil way filter can be gradually bad along with the increase of the working time, and the more the filter element loss data close to the current moment changes, the more the latest loss condition of the oil way filter can be described, so that in order to predict the maintenance time of the engine as much as possible in real time, the accuracy of predicting the maintenance time of the engine is further improved, and the maintenance time information can be determined based on the oil outlet oil pressure descending slope, the preset oil outlet oil pressure threshold value and the filter element loss data close to the current moment in the filter element loss data of at least two times of different times.
The preset algorithm can be obtained through the prior determination. The maintenance time information may be determined based on the oil outlet oil pressure, the oil outlet oil pressure drop slope, and the preset oil outlet oil pressure threshold value in the filter element loss data that is closer to the current time, including determining a ratio of a difference between the oil outlet oil pressure in the filter element loss data that is closer to the current time and the preset oil outlet oil pressure threshold value, to the oil outlet oil pressure drop slope, as the maintenance time information, which may include indicating a remaining running time of the engine. Or, maintenance time information may be determined based on the oil outlet oil pressure in the filter element loss data that is closer to the current time, the detection time information, the oil outlet oil pressure drop slope, and the preset oil outlet oil pressure threshold value, including determining a ratio of a difference between the oil outlet oil pressure in the filter element loss data that is closer to the current time and the preset oil outlet oil pressure threshold value, and the oil outlet oil pressure drop slope, and determining a sum of the ratio and the detection time information as the maintenance time information, which may be used to indicate a time point at which maintenance is performed on the engine.
Optionally, when it is determined that the historical cartridge loss database stores new cartridge loss data, the two times of cartridge loss data closest to the current time are obtained.
When the historical filter element loss database stores new filter element loss data, the filter element loss data of two times closest to the current moment is acquired, so that the maintenance time information of the engine can be determined by the engine maintenance prediction method provided by the embodiment of the disclosure, the real-time performance of predicting the maintenance time of the engine is further improved, and the predicted maintenance time information is more accurate.
For example, referring to FIG. 3, a maintenance time prediction diagram is provided, wherein the y-axis represents the oil pressure p of the oil outlet, the x-axis represents the detection time information t, and the preset oil pressure threshold isWhen earlier cartridge loss data is obtained including P 1 、t 1 、P 2 、t 2 When the maintenance time information is determined to be t x1 . When newly acquired filter element loss data comprises P 3 、t 3 Then based on P 2 、t 2 、P 3 、t 3 Determining that the maintenance time information is t x2 Thereby realizing updating of the maintenance time information.
Optionally, the maintenance time information includes a remaining operation time of the engine, and accordingly, after the operation of determining the maintenance time information of the engine based on the slope of the drop of the oil pressure of the oil outlet and the preset oil pressure threshold value in step 203, when the remaining operation time is greater than or equal to a first preset time threshold value and less than a second preset time threshold value, a maintenance reminding signal is sent, and when the remaining operation time is less than the first preset time threshold value, an engine locking signal is sent, wherein the first preset time threshold value is less than the second preset time threshold value. Of course, when the remaining operating time is greater than or equal to the second preset time threshold, the maintenance time information of the engine may be determined again in the above manner to continuously predict the timing of engine maintenance.
In order to prompt a user in time and maintain the engine, the possibility of unexpected shutdown maintenance is reduced, and a maintenance prompt signal and an engine locking signal can be sent out based on the currently determined maintenance time information. The maintenance reminding signal can be used for reminding a user to carry out maintenance on the engine, such as replacing a filter element or an oil way filter; the engine lock signal may be used to indicate that the engine is locked to prohibit continued engine operation.
The first preset time threshold and the second preset time threshold may be obtained by setting in advance. For example, the time submitted by the user may be received by the controller 103 as a first preset maintenance time threshold and a second preset maintenance time threshold, respectively, and stored to the memory 102.
It should be noted that, in the embodiment of the present disclosure, the magnitudes of the first preset time threshold and the second preset time threshold are not specifically limited.
Alternatively, the first preset time threshold and the second preset time threshold may be obtained from the memory by the controller 103, and the determined remaining running time may be compared with the first preset time threshold and the second preset time threshold, respectively. When the remaining operation time is determined to be greater than or equal to the first preset time threshold and less than the second preset time threshold, the control display 105 sends out maintenance reminding signals such as oil-way filter replacement through a flashing icon or a popup window. The control ECM104 issues an engine lock signal when the remaining operating time is determined to be less than a first preset time threshold.
Referring to fig. 4, a flowchart of an engine maintenance prediction method provided in the present disclosure includes:
step 401, detecting oil pressure of an oil outlet by a pressure sensor 101;
step 402, the controller 103 determines the remaining operation time of the engine, determines whether the remaining operation time is greater than or equal to a second preset time threshold, if yes, returns to step 401, otherwise, executes step 403;
step 403, the controller 103 determines whether the remaining running time is greater than or equal to a first preset time threshold, if yes, step 404A is executed, otherwise step 404B is executed;
step 404A, sending a maintenance reminding signal, and returning to step 401;
step 404B, an engine lock signal is sent, the oil filter is replaced, and the process returns to step 401.
Referring to fig. 5, a functional block diagram of an engine maintenance prediction apparatus 500 provided in the present disclosure is shown. The engine maintenance prediction apparatus 500 may be applied to the controller 103. It should be noted that, the basic principle and the technical effects of the engine maintenance prediction apparatus 500 provided in this embodiment are the same as those of the corresponding method embodiment described above, and for brevity, reference may be made to the corresponding contents of the method embodiment for the sake of brevity. The engine maintenance prediction apparatus 500 includes a first acquisition module 501, a first determination module 502, and a second determination module 503.
A first obtaining module 501, configured to obtain filter element loss data of an oil path filter at least twice at different times before a current moment, where the filter element loss data includes oil pressure of an oil outlet of the oil path filter and detection time information corresponding to the oil pressure of the oil outlet;
a first determining module 502, configured to determine an oil pressure drop slope of an oil outlet of the oil path filter based on the at least two filter element loss data at different times;
a second determining module 503 is configured to determine maintenance time information of the engine based on the slope of the drop of the oil pressure of the oil outlet and a preset oil pressure threshold value of the oil outlet.
Optionally, the detection time information is used for indicating a total duration that the engine speed is greater than or equal to a preset speed threshold, referring to fig. 6, the apparatus further includes:
a second obtaining module 504, configured to obtain the engine speed and count an operation duration in which the engine speed is greater than or equal to the preset speed threshold;
a third obtaining module 505, configured to obtain current oil pressure of an oil outlet and current detection time information of the oil path filter when the operation duration increases to be equal to an integer multiple of a preset operation duration threshold;
the storage module 506 is configured to store the current oil pressure of the oil outlet and the current detection time information into a historical filter element loss database;
The first obtaining module 501 is specifically configured to:
and acquiring the filter element loss data of at least two different times from the historical filter element loss database.
Optionally, the first obtaining module 501 is specifically configured to:
and acquiring the two times of filter element loss data closest to the current moment.
Optionally, the second determining module 503 is specifically configured to:
and calculating and acquiring the maintenance time information based on the oil outlet oil pressure drop slope, the preset oil outlet oil pressure threshold value, filter element loss data which is closer to the current moment in the filter element loss data of at least two times of different times, and a preset algorithm.
Optionally, the maintenance time information includes a remaining operation time of the engine, referring to fig. 7, the apparatus further includes:
the first reminding module 507 is configured to send a maintenance reminding signal when the remaining operation time is greater than or equal to a first preset time threshold and less than a second preset time threshold;
a second reminding module 508, configured to send out an engine locking signal when the remaining running time is less than the first preset time threshold;
wherein the first preset time threshold is less than the second preset time threshold.
The foregoing apparatus is used for executing the method provided in the foregoing embodiment, and its implementation principle and technical effects are similar, and are not described herein again.
The above modules may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), or one or more microprocessors (digital singnal processor, abbreviated as DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGA), or the like. For another example, when a module above is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Referring to fig. 8, a functional block diagram of an engine maintenance prediction apparatus provided in the present disclosure is shown. The engine maintenance prediction device may include a processor 801, a storage medium 802, and a bus 803, where the storage medium 802 stores machine readable instructions executable by the processor 801, where when the engine maintenance prediction device is running, the processor 801 communicates with the storage medium 802 through the bus 803, and where the processor 801 executes the machine readable instructions, where the above-described method embodiments may be implemented. The specific implementation manner and the technical effect are similar, and are not repeated here.
Optionally, the disclosure further provides a computer readable storage medium having stored thereon a computer program which when executed by a processor is executed to implement the above-described method embodiments.
In the several embodiments provided by the present disclosure, it should be understood that the apparatus embodiments described above are illustrative only and that the disclosed apparatus and methods may be implemented in other ways. For example, the division of the units is merely a logic function division, and there may be another division manner when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed, for example, each unit may be integrated into one processing unit, each unit may exist alone physically, or two or more units are integrated into one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description of the preferred embodiments of the present disclosure is provided only and not intended to limit the disclosure so that various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (5)
1. An engine maintenance prediction method, comprising:
acquiring filter element loss data of an oil way filter at least twice before the current moment when the engine speed is greater than or equal to a preset speed threshold value, wherein the filter element loss data comprises oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure;
determining an oil outlet oil pressure drop slope of the oil way filter based on the filter element loss data of the engine at least twice when the rotational speed of the engine is greater than or equal to a preset rotational speed threshold value;
determining maintenance time information of the engine based on the oil outlet oil pressure drop slope and a preset oil outlet oil pressure threshold value;
the detection time information is used for indicating the total duration that the engine speed is greater than or equal to a preset speed threshold, and the method further comprises:
Acquiring the engine speed and counting the operation time length when the engine speed is greater than or equal to the preset speed threshold;
when the operation time length is increased to be equal to the integral multiple of a preset operation time length threshold value, acquiring current oil pressure of an oil outlet of the oil way filter and current detection time information;
storing the current oil outlet oil pressure and the current detection time information into a historical filter element loss database;
the obtaining the filter element loss data of the oil way filter at least twice before the current moment when the engine speed is greater than or equal to a preset speed threshold value comprises the following steps:
acquiring two times of filter element loss data which are closest to the current moment and are when the engine speed is greater than or equal to a preset speed threshold value from the historical filter element loss database;
the maintenance time information of the engine is determined based on the oil outlet oil pressure descending slope and a preset oil outlet oil pressure threshold value, and the maintenance time information comprises the following steps:
and calculating and acquiring the maintenance time information based on the oil outlet oil pressure drop slope, the preset oil outlet oil pressure threshold, filter element loss data which is closer to the current moment in the filter element loss data at least twice when the engine speed is greater than or equal to the preset speed threshold and a preset algorithm.
2. The method of claim 1, wherein the service time information comprises a remaining run time of the engine, the method further comprising, after the determining the service time information of the engine based on the slope of the drop in the oil pressure of the oil outlet and a preset oil pressure threshold value:
when the residual running time is greater than or equal to a first preset time threshold value and less than a second preset time threshold value, a maintenance reminding signal is sent out;
when the residual running time is smaller than the first preset time threshold value, an engine locking signal is sent out;
wherein the first preset time threshold is less than the second preset time threshold.
3. An engine maintenance prediction apparatus, comprising:
the first acquisition module is used for acquiring filter element loss data of the oil way filter at least twice before the current moment when the engine speed is greater than or equal to a preset speed threshold value, wherein the filter element loss data comprises oil outlet oil pressure of the oil way filter and detection time information corresponding to the oil outlet oil pressure;
the first determining module is used for determining the oil pressure drop slope of the oil outlet of the oil way filter based on the filter element loss data of the engine at least twice when the rotating speed of the engine is greater than or equal to a preset rotating speed threshold value;
A second determining module, configured to determine maintenance time information of an engine based on the oil outlet oil pressure drop slope and a preset oil outlet oil pressure threshold, where determining the maintenance time information of the engine based on the oil outlet oil pressure drop slope and the preset oil outlet oil pressure threshold includes:
calculating and acquiring the maintenance time information based on the oil outlet oil pressure drop slope, the preset oil outlet oil pressure threshold, filter element loss data which is closer to the current moment in the filter element loss data at least twice when the engine speed is greater than or equal to a preset speed threshold and a preset algorithm;
the detection time information is used for indicating the total duration that the engine speed is greater than or equal to a preset speed threshold, and the device further comprises:
the second acquisition module is used for acquiring the engine speed and counting the operation duration of the engine speed which is greater than or equal to the preset speed threshold;
the third acquisition module is used for acquiring the current oil pressure of the oil outlet of the oil way filter and the current detection time information when the operation time is increased to be equal to the integral multiple of the threshold value of the preset operation time;
the storage module is used for storing the current oil outlet oil pressure and the current detection time information into a historical filter element loss database;
The first obtaining module is specifically configured to:
and acquiring the two-time filter element loss data which are closest to the current moment and are when the engine speed is greater than or equal to a preset speed threshold value from the historical filter element loss database.
4. An engine maintenance prediction apparatus, comprising: a processor, a storage medium, and a bus, the storage medium storing machine-readable instructions executable by the processor, the processor in communication with the storage medium via the bus when the engine maintenance pre-test device is running, the processor executing the machine-readable instructions to perform the steps of the method of any of claims 1-2.
5. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the method according to any of claims 1-2.
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