CN114658511A - Early warning method and device for engine oil pressure, readable storage medium and engine - Google Patents
Early warning method and device for engine oil pressure, readable storage medium and engine Download PDFInfo
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- CN114658511A CN114658511A CN202210457161.8A CN202210457161A CN114658511A CN 114658511 A CN114658511 A CN 114658511A CN 202210457161 A CN202210457161 A CN 202210457161A CN 114658511 A CN114658511 A CN 114658511A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
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Abstract
The invention provides an early warning method and device of engine oil pressure, a readable storage medium and an engine, wherein the early warning method of the engine oil pressure comprises the following steps: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine; setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data; and under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time, performing engine oil pressure early warning to compare the real-time measured value of the engine oil pressure with the first dynamic threshold value in a corresponding state, so that the flexibility of the oil pressure early warning method is improved, and the false fault report caused by the error between the engine oil pressure value and the first dynamic threshold value is reduced.
Description
Technical Field
The invention relates to the field of engine state detection, in particular to an early warning method and device of engine oil pressure, a readable storage medium and an engine.
Background
In the prior art, an engine oil pressure sensor belongs to a core part of an engine, monitors the engine oil pressure of the engine in real time, has important influence on the performance and safety of the engine, and is also a requirement of regulations.
Disclosure of Invention
The present invention is directed to solving at least the problems of the prior art or the related art.
Therefore, the invention provides a method for early warning of engine oil pressure in a first aspect.
The invention provides an early warning device for engine oil pressure.
A third aspect of the invention provides an early warning device of engine oil pressure.
A fourth aspect of the invention provides a readable storage medium.
A fifth aspect of the invention provides an engine.
In view of this, a first aspect of the present invention provides an engine oil pressure warning method, including: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine; setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data; and under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time, carrying out engine oil pressure early warning.
According to the technical scheme, first data of the engine are obtained, the first data comprise a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine, a first dynamic threshold value is set according to the rotating speed and the engine oil temperature of the engine in the first data, the engine oil pressure value in the first data is compared with the first dynamic threshold value, the engine oil pressure value is continuously smaller than the first dynamic threshold value within a first preset time period, and engine oil pressure early warning is conducted.
In the technical scheme, the first dynamic threshold is set according to the engine speed value and the engine oil temperature value in the first data, the first dynamic threshold is the low engine oil pressure dynamic threshold and is used for being compared with the engine oil pressure value to achieve the purpose of early warning of too low engine oil pressure, the first dynamic threshold can be changed according to the change of the engine speed and the engine oil temperature by measuring the engine speed and the engine oil temperature value in real time, the real-time measured value of the engine oil pressure can be compared with the first dynamic threshold in the corresponding state, the flexibility of the oil pressure early warning method is improved, and the false fault caused by the error between the engine oil pressure value and the first dynamic threshold is reduced.
In the technical scheme, engine oil pressure early warning is carried out under the condition that the engine oil pressure value is continuously smaller than a first dynamic threshold value within a first preset time period, wherein the first preset time period can range from 3 minutes to 5 minutes, namely the engine oil pressure value is lower than the dynamic threshold value and the duration time reaches 3 minutes to 5 minutes, then engine oil pressure early warning is carried out, and false alarm of the engine oil pressure early warning is avoided through real-time monitoring of the engine oil pressure.
Illustratively, an engine oil temperature value, an engine speed value and an engine oil pressure value at the moment i are obtained, a first dynamic threshold value at the moment i is set according to the engine oil temperature value and the engine speed value at the moment i, the first dynamic threshold value at the moment i and the engine oil pressure value at the moment i are compared, if the engine oil pressure value at the moment i is smaller than the first dynamic threshold value at the moment i, an engine oil temperature value, an engine speed value and an engine oil pressure value at the moment (i +1) are obtained on the basis, the first dynamic threshold value at the moment (i +1) and the engine oil pressure value at the moment (i +1) are compared, if the engine oil pressure value at the moment (i +1) is smaller than the first dynamic threshold value at the moment (i +1), the comparison of the first dynamic threshold value and the engine oil pressure value is continued, the duration is a first preset duration, namely the first dynamic threshold value at the same moment and the engine oil pressure value at the same moment in the first preset duration are continuously compared, and if the engine oil pressure value at the same moment is continuously lower than the first dynamic threshold value at the same moment, early warning of the engine is carried out.
In any of the above technical schemes, the engine oil pressure is monitored in real time through the engine oil pressure sensor, the first dynamic threshold value is dynamically adjusted through the engine oil temperature and the engine rotating speed, the engine oil pressure value and the first dynamic threshold value can be compared in the state of the same engine, safety and accuracy are both considered, harm to the engine and a user is avoided, and meanwhile, false alarm is reduced, and the fault occurrence rate is reduced.
According to the early warning method for the engine oil pressure provided by the invention, the following additional technical characteristics can be realized:
in any of the above technical solutions, the first data further includes an oil injection amount, and before the engine oil pressure warning is performed, the engine oil pressure warning method further includes: and comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value under the condition that the rotating speed value of the engine is greater than the first rotating speed threshold value and the fuel injection quantity is greater than the first fuel injection quantity threshold value.
In the technical scheme, before the oil pressure of the engine is early warned by comparing the oil pressure value with the first dynamic threshold value, the rotating speed value and the fuel injection quantity of the engine are respectively compared with the first rotating speed threshold value and the first fuel injection quantity threshold value, comparing the engine oil pressure value with a first dynamic threshold value under the condition that the rotating speed value of the engine is greater than a first rotating speed threshold value and the oil injection quantity is greater than a first oil injection threshold value, alternatively, the first speed threshold is set to 500 rpm to 550 rpm, the first injection threshold is set to 5mg, namely, under the condition that the rotating speed value of the engine is more than 500 rpm to 550 rpm and the fuel injection quantity is more than 5mg, the engine oil pressure value is compared with the first dynamic threshold value, and the engine oil pressure value can be compared only when the rotating speed value and the fuel injection quantity of the engine meet set conditions.
In any of the above technical solutions, the acquired first data includes a rotation speed value, an engine oil pressure value, an engine oil temperature value, and an oil injection amount of the engine, and the detection range is wider because the invention only relates to information of the rotation speed value, the engine oil pressure value, the engine oil temperature value, and the oil injection amount, and is not limited by other conditions.
In any of the above technical solutions, the step of comparing the engine oil pressure value within the first preset time period with the magnitude of the first dynamic threshold specifically includes: setting the time that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value as starting time; and continuously comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value within a first preset time period from the starting time.
In the above technical scheme, the step of comparing the oil pressure value with the first dynamic threshold specifically includes setting an initial time for comparing the oil pressure value with the first dynamic threshold, setting a time when the rotation speed value of the engine is greater than the first rotation speed threshold and the fuel injection amount is greater than the first fuel injection amount threshold as the initial time, and starting at the initial time, continuously comparing the oil pressure value with the first dynamic threshold, wherein the duration is a first preset duration.
Furthermore, the engine oil pressure value needs to be continuously detected within a first preset time period, and because the first dynamic threshold is set according to the rotating speed value and the engine oil temperature value of the engine, the first dynamic threshold is continuously changed within the first preset time period, so that the engine oil pressure value and the first dynamic threshold can be compared in the same engine state, and the accuracy of engine oil pressure early warning is improved.
In any of the above technical solutions, the early warning method for engine oil pressure further includes: and under the condition that the engine oil pressure value is continuously greater than the first dynamic threshold value within the second preset time, stopping the engine oil pressure early warning.
In the above technical solution, under the condition that the engine oil pressure value is greater than the first dynamic threshold and continues for a second preset time, the engine oil pressure warning is stopped, that is, the engine oil pressure value is continuously monitored in the above state of performing the engine oil pressure warning, optionally, the second preset time may be set to 3 minutes to 5 minutes, so that when the engine oil pressure value is greater than the first dynamic threshold, the engine oil pressure value is continuously monitored for 3 minutes to 5 minutes, and when the engine oil pressure value is continuously greater than the first dynamic threshold within a time period of 3 minutes to 5 minutes, the engine oil pressure warning is stopped.
In any of the above technical solutions, before comparing the magnitude relationship between the rotation speed value of the engine and the first rotation speed threshold, the engine oil pressure warning further includes: under the condition that the rotating speed value of the engine is smaller than or equal to the second rotating speed threshold value, the step of acquiring the first data of the engine is executed again; the second rotational speed threshold is less than the first rotational speed threshold.
In the above technical solution, before comparing the relationship between the magnitude of the engine speed value and the magnitude of the first speed threshold, the relationship between the engine speed value and the second speed threshold is compared, and in the case that the engine speed value is smaller than the second speed threshold, the first data of the engine is acquired again, where the second speed threshold is smaller than the first speed threshold, and in the present invention, the second speed threshold may be set to 400 rpm to 450 rpm, and the first speed threshold may be set to 500 rpm to 550 rpm, so that the second speed threshold is smaller than the first speed threshold.
In the technical scheme, before the comparison of the engine oil pressure values, the rotating speed values of the engine can be compared firstly, and when the rotating speed value of the engine is lower than the second rotating speed threshold value, the engine oil pressure values of the engine can not be monitored continuously, so that the loss of the engine oil pressure sensor is reduced.
In any of the above technical solutions, the early warning method for engine oil pressure further includes: and under the condition that the rotating speed value of the engine is smaller than or equal to the first rotating speed threshold value and/or the fuel injection quantity is smaller than or equal to the first fuel injection quantity threshold value, the step of acquiring the first data of the engine is executed again.
In the above technical solution, when the rotation speed value of the engine is less than or equal to the first rotation speed threshold or the fuel injection amount is less than or equal to the first fuel injection amount threshold, the first data of the engine is re-acquired, that is, the diagnosis of the oil pressure state of the engine is stopped and the step of acquiring the first data of the engine is re-executed as long as one of the two data of the rotation speed value and the fuel injection amount of the engine does not reach the preset standard.
A second aspect of the present invention provides an engine oil pressure warning device, including: a first acquisition unit: the engine oil temperature control system is used for obtaining first data of an engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine; a first setting unit: the engine oil temperature control device is used for setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data; a first comparison unit: and the engine oil pressure early warning is carried out under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time.
According to the technical scheme, first data of the engine are obtained through a first obtaining unit, the first data comprise a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine, a first dynamic threshold value is set through a first setting unit according to the rotating speed and the engine oil temperature of the engine in the first data, after the first dynamic threshold value is set, the engine oil pressure value in the first data is compared with the first dynamic threshold value through a first comparing unit, the engine oil pressure value is continuously smaller than the first dynamic threshold value within a first preset time period, and engine oil pressure early warning is conducted.
In the technical scheme, the first dynamic threshold is set according to the engine speed value and the engine oil temperature value in the first data, the first dynamic threshold is the low engine oil pressure dynamic threshold and is used for being compared with the engine oil pressure value to achieve the purpose of early warning of too low engine oil pressure, the first dynamic threshold can be changed according to the change of the engine speed and the engine oil temperature by measuring the engine speed and the engine oil temperature value in real time, namely, the real-time measured value of the engine oil pressure can be compared with the first dynamic threshold in the corresponding state, the flexibility of the oil pressure early warning method is improved, and the false fault caused by the error between the engine oil pressure value and the first dynamic threshold is reduced.
In the technical scheme, under the condition that the engine oil pressure value is smaller than a first dynamic threshold value within a first preset time, engine oil pressure early warning is carried out, wherein the first preset time can be 3 minutes to 5 minutes, namely the engine oil pressure value is lower than the dynamic threshold value, and the duration time reaches 3 minutes to 5 minutes, then the engine oil pressure early warning is carried out, and the false alarm of the engine oil pressure early warning is avoided by monitoring the engine oil pressure in real time.
In any of the above technical schemes, the engine oil pressure is monitored in real time through the engine oil pressure sensor, the first dynamic threshold value is dynamically adjusted through the engine oil temperature and the engine rotating speed, the engine oil pressure value and the first dynamic threshold value can be compared in the state of the same engine, safety and accuracy are both considered, harm to the engine and a user is avoided, and meanwhile, false alarm is reduced, and the fault occurrence rate is reduced.
The early warning device for the engine oil pressure provided by the invention can also have the following additional technical characteristics:
in any one of the above technical solutions, the first data further includes an oil injection amount, and before the engine oil pressure early warning is performed, the early warning device for the engine oil pressure further includes: the third comparison unit is used for comparing the magnitude relation between the fuel injection quantity and the first fuel injection quantity threshold value; and comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value under the condition that the rotating speed value of the engine is greater than the first rotating speed threshold value and the fuel injection quantity is greater than the first fuel injection quantity threshold value.
In the above technical solution, before the engine oil pressure value and the first dynamic threshold are compared by the first comparing unit to perform the engine oil pressure warning, the second comparing unit and the third comparing unit compare the rotation speed value and the injected fuel quantity of the engine with the first rotation speed threshold and the first injected fuel quantity threshold, respectively, and when the rotation speed value of the engine is greater than the first rotation speed threshold and the injected fuel quantity is greater than the first injected fuel threshold, the comparison between the oil pressure value and the first dynamic threshold is performed, optionally, the first rotation speed threshold is set to 500 rpm to 550 rpm, the first injected fuel quantity threshold is set to 5mg, that is, when the rotation speed value of the engine is greater than 500 rpm to 550 rpm and the injected fuel quantity is greater than 5mg, the comparison between the oil pressure value and the first dynamic threshold is performed, wherein only when the rotation speed value and the injected fuel quantity of the engine both satisfy the set conditions, the comparison of the oil pressure values can be made.
In any of the above technical solutions, the acquired first data includes a rotation speed value, an engine oil pressure value, an engine oil temperature value, and an oil injection amount of the engine, and the detection range is wider because the invention only relates to information of the rotation speed value, the engine oil pressure value, the engine oil temperature value, and the oil injection amount, and is not limited by other conditions.
In any of the above technical solutions, the step of comparing the engine oil pressure value within the first preset time period with the magnitude of the first dynamic threshold specifically includes: setting the time that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value as starting time; and continuously comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value within a first preset time period from the starting time.
In the above technical scheme, the step of comparing the oil pressure value with the first dynamic threshold specifically includes setting an initial time for comparing the oil pressure value with the first dynamic threshold, setting a time when the rotation speed value of the engine is greater than the first rotation speed threshold and the fuel injection amount is greater than the first fuel injection amount threshold as the initial time, and starting at the initial time, continuously comparing the oil pressure value with the first dynamic threshold, wherein the duration is a first preset duration.
Furthermore, the engine oil pressure value needs to be continuously detected within a first preset time period, and because the first dynamic threshold is set according to the rotating speed value and the engine oil temperature value of the engine, the first dynamic threshold is continuously changed within the first preset time period, so that the engine oil pressure value and the first dynamic threshold can be compared in the same engine state, and the accuracy of engine oil pressure early warning is improved.
In any of the above technical scheme, the early warning device of engine oil pressure still includes: and under the condition that the engine oil pressure value is greater than the first dynamic threshold value within a second preset time period, stopping the engine oil pressure early warning, wherein the second preset time period is less than or equal to the first preset time period.
In the above technical solution, under the condition that the engine oil pressure value is greater than the first dynamic threshold and continues for the second preset duration, the engine oil pressure early warning is stopped, that is, the engine oil pressure value is continuously monitored in the above state of performing the engine oil pressure early warning, optionally, the second preset duration may be set to 3 minutes to 5 minutes, so that when the engine oil pressure value is greater than the first dynamic threshold, the engine oil pressure is continuously monitored for 5 minutes, and when the engine oil pressure value is continuously monitored for 3 minutes to 5 minutes and is greater than the first dynamic threshold, the engine oil pressure early warning is stopped.
In any of the above technical solutions, before comparing the magnitude relationship between the rotation speed value of the engine and the first rotation speed threshold, the engine early warning further includes: under the condition that the rotating speed value of the engine is smaller than or equal to the second rotating speed threshold value, the step of acquiring the first data of the engine is executed again; the second rotational speed threshold is less than the first rotational speed threshold.
In the above technical solution, before comparing the relationship between the magnitude of the engine speed value and the magnitude of the first speed threshold, the relationship between the engine speed value and the second speed threshold is compared, and when the engine speed value is smaller than the second speed threshold, the first data of the engine is acquired again, wherein the second speed threshold is smaller than the first speed threshold, in the present invention, the second speed threshold may be set to 400 rpm to 450 rpm, and the first speed threshold may be set to 500 rpm to 550 rpm, so that the second speed threshold is smaller than the first speed threshold.
In the technical scheme, before the comparison of the engine oil pressure values, the rotating speed values of the engine can be compared firstly, and when the rotating speed value of the engine is lower than the second rotating speed threshold value, the engine oil pressure values of the engine can not be monitored continuously, so that the loss of the engine oil pressure sensor is reduced.
In any one of the above technical solutions, the early warning device for engine oil pressure further includes: and under the condition that the rotating speed value of the engine is smaller than or equal to the first rotating speed threshold value and/or the fuel injection quantity is smaller than or equal to the first fuel injection quantity threshold value, the step of acquiring the first data of the engine is executed again.
In the above technical solution, when the rotation speed value of the engine is less than or equal to the first rotation speed threshold or the fuel injection amount is less than or equal to the first fuel injection amount threshold, the first data of the engine is obtained again, that is, the diagnosis of the oil pressure state of the engine is stopped as long as one of the two data of the rotation speed value and the fuel injection amount of the engine does not meet the preset standard, and the step of obtaining the first data of the engine is executed again.
A third aspect of the present invention provides an early warning device for engine oil pressure, including: a memory for storing a program of a push method of information; a processor for executing a program of an early warning method of engine oil pressure to realize: the early warning method for the engine oil pressure in any technical scheme.
A fourth aspect of the present invention provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method for early warning of engine oil pressure according to any one of the above-mentioned aspects.
A fifth aspect of the invention provides an engine, comprising: the early warning device of the engine oil pressure in any one technical scheme; and/or a readable storage medium as in any of the above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows one of the flow diagrams of a warning method of engine oil pressure according to an embodiment of the present invention;
FIG. 2 is a second schematic flow chart of a method for warning engine oil pressure according to an embodiment of the present invention;
FIG. 3 is a third schematic flow chart illustrating a method for warning engine oil pressure according to an embodiment of the present invention;
FIG. 4 is a fourth flowchart of a warning method of engine oil pressure according to an embodiment of the present invention;
FIG. 5 is a fifth flowchart of a method for warning engine oil pressure according to an embodiment of the present invention;
FIG. 6 shows a sixth flowchart of an early warning method of engine oil pressure according to an embodiment of the present invention;
FIG. 7 is a seventh schematic flow chart showing an early warning method of engine oil pressure according to an embodiment of the present invention;
fig. 8 is a block diagram showing a configuration of an engine oil pressure warning device according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, taken in conjunction with the accompanying drawings and detailed description, is set forth below. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
As shown in fig. 1, an embodiment of a first aspect of the present invention provides a method for early warning of engine oil pressure, where the method for early warning of engine oil pressure includes:
step 102: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
step 104: setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
step 106: and under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time, carrying out engine oil pressure early warning.
In the embodiment of the invention, first data of the engine is obtained, the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine, a first dynamic threshold value is set according to the rotating speed and the engine oil temperature in the first data, the engine oil pressure value in the first data is compared with the first dynamic threshold value, and the engine oil pressure is early-warned when the engine oil pressure value is smaller than the first dynamic threshold value within a first preset time.
In the above embodiment, the first dynamic threshold is set according to the engine speed value and the engine oil temperature value in the first data, and the first dynamic threshold is a dynamic threshold with low engine oil pressure and is used for comparing with the engine oil pressure value to warn that the engine oil pressure is too low.
In the above embodiment, the engine oil pressure early warning is performed when the engine oil pressure value is smaller than the first dynamic threshold within the first preset time period, where the first preset time period may be 3 minutes to 5 minutes, that is, when the engine oil pressure value is lower than the dynamic threshold and the duration time reaches 3 minutes to 5 minutes, the engine oil pressure early warning is performed, and the engine oil pressure early warning is prevented from being falsely reported by monitoring the engine oil pressure in real time.
In any of the above embodiments, the oil pressure sensor belongs to a core component of an engine, and the oil pressure sensor monitors the oil pressure in real time, so that the oil pressure of the engine is monitored in real time, and the oil pressure sensor has important influence on the performance and safety of the engine and is also a requirement of regulations. The problem of too low engine oil pressure needs to be detected in time so as not to damage the engine and users.
Illustratively, obtaining an engine oil temperature value, an engine speed value and an engine oil pressure value at a time i, setting a first dynamic threshold value at the time i according to the engine oil temperature value and the engine speed value at the time i, comparing the first dynamic threshold value at the time i with the engine oil pressure value at the time i, if the engine oil pressure value at the time i is smaller than the first dynamic threshold value at the time i, obtaining the engine oil temperature value, the engine speed value and the engine oil pressure value at a time (i +1) on the basis of the first dynamic threshold value, comparing the first dynamic threshold value at the time (i +1) with the engine oil pressure value at the time (i +1), if the engine oil pressure value at the time (i +1) is smaller than the first dynamic threshold value at the time (i +1), continuing to compare the first dynamic threshold value with the engine oil pressure value, wherein the duration is a first preset duration, that is, the first dynamic threshold value at the same time and the engine oil pressure value at the same time are continuously compared within the first preset duration, and if the engine oil pressure value at the same moment is continuously lower than the first dynamic threshold value at the same moment, early warning of the engine is carried out. Furthermore, the first dynamic threshold value is dynamically adjusted through the engine oil temperature and the engine rotating speed, so that the engine oil pressure value and the first dynamic threshold value can be compared in the same engine state, safety and accuracy are both considered, harm to the engine and a user is avoided, false alarm is reduced, and the fault occurrence rate is reduced. Example two
As shown in fig. 2, in any of the above embodiments, the first data further includes an oil injection amount, and before the engine oil pressure warning is performed, the engine oil pressure warning method further includes:
step 202: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
step 204: setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
step 206: comparing the magnitude relation between the engine oil pressure value and a first dynamic threshold value under the condition that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value;
step 208: and under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time, carrying out engine oil pressure early warning.
In the above embodiment, before the engine oil pressure warning is performed by comparing the oil pressure value with the first dynamic threshold, the rotation speed value and the fuel injection quantity of the engine are compared with the first rotation speed threshold and the first fuel injection quantity threshold respectively, when the rotating speed value of the engine is larger than the first rotating speed threshold value and the oil injection quantity is larger than the first oil injection threshold value, the engine oil pressure value is compared with the first dynamic threshold value, alternatively, the first speed threshold is set to 500 rpm to 550 rpm, the first injection threshold is set to 5mg, namely, under the condition that the rotating speed value of the engine is more than 500 rpm to 550 rpm and the fuel injection quantity is more than 5mg, the engine oil pressure value is compared with the first dynamic threshold value, and the engine oil pressure value can be compared only when the rotating speed value and the fuel injection quantity of the engine meet set conditions.
In any of the embodiments, the acquired first data includes a rotation speed value, an oil pressure value, an oil temperature value, and an oil injection amount of the engine, and the detection range is wider because the present invention only relates to information of the rotation speed value, the oil pressure value, the oil temperature value, and the oil injection amount, and is not limited by other conditions.
EXAMPLE III
As shown in fig. 3, in any of the above embodiments, the step of comparing the magnitude of the oil pressure value and the first dynamic threshold specifically includes:
step 302: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
step 304: setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
step 306: setting the time that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value as starting time;
step 308: continuously comparing the magnitude relation between the engine oil pressure value and a first dynamic threshold within a first preset time period from the starting time;
step 310: and under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time, carrying out engine oil pressure early warning.
In the above embodiment, the step of comparing the oil pressure value with the first dynamic threshold specifically includes setting a starting time for comparing the oil pressure value with the first dynamic threshold, setting a time when the rotation speed value of the engine is greater than the first rotation speed threshold and the fuel injection amount is greater than the first fuel injection amount threshold as the starting time, and starting at the starting time, continuously comparing the oil pressure value with the first dynamic threshold, where the duration is a first preset duration.
Furthermore, the engine oil pressure value needs to be continuously detected within a first preset time period, and because the first dynamic threshold is set according to the rotating speed value and the engine oil temperature value of the engine, the first dynamic threshold is continuously changed within the first preset time period, so that the engine oil pressure value and the first dynamic threshold can be compared in the same engine state, and the accuracy of engine oil pressure early warning is improved.
Example four
As shown in fig. 4, in any of the above embodiments, the method for warning of engine oil pressure further includes:
step 402: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
step 404: setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
step 406: setting the time that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value as starting time;
step 408: continuously comparing the magnitude relation between the engine oil pressure value and a first dynamic threshold within a first preset time period from the starting time;
step 410: under the condition that the engine oil pressure value is continuously smaller than a first dynamic threshold value within a first preset time, performing engine oil pressure early warning;
step 412: and under the condition that the engine oil pressure value is continuously greater than the first dynamic threshold value within the second preset time, stopping the engine oil pressure early warning.
In the above embodiment, when the oil pressure value is greater than the first dynamic threshold and continues for the second preset time period, the step of obtaining the first data of the engine is performed again, that is, the oil pressure value is continuously monitored in the state of performing the engine oil pressure warning, optionally, the range of the second preset time period may be set to 3 minutes to 5 minutes, so that when the oil pressure value is greater than the first dynamic threshold, the oil pressure value is continuously monitored for 3 minutes to 5 minutes, and when the oil pressure value is continuously monitored for 3 minutes to 5 minutes and is greater than the first dynamic threshold, the engine oil pressure warning is stopped.
EXAMPLE five
As shown in fig. 5, in any of the above embodiments, before comparing the magnitude relationship between the engine speed value and the first speed threshold, the method includes:
step 502: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
step 504: setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
step 506: under the condition that the rotating speed value of the engine is smaller than or equal to the second rotating speed threshold value, the step of acquiring the first data of the engine is executed again; the second rotation speed threshold value is smaller than the first rotation speed threshold value;
step 508: setting the time when the rotating speed value of the engine is greater than a first rotating speed threshold and the fuel injection quantity is greater than a first fuel injection quantity threshold as starting time;
step 510: continuously comparing the magnitude relation between the engine oil pressure value and a first dynamic threshold within a first preset time period from the starting time;
step 512: under the condition that the engine oil pressure value is continuously smaller than a first dynamic threshold value within a first preset time, performing engine oil pressure early warning;
step 514: and under the condition that the engine oil pressure value is continuously greater than the first dynamic threshold value within a second preset time, stopping the engine oil pressure early warning.
In the above embodiment, before comparing the magnitude relationship between the engine speed value and the first speed threshold, the relationship between the engine speed value and the second speed threshold is compared, and the engine oil pressure warning is stopped when the engine speed value is smaller than the second speed threshold, which is smaller than the first speed threshold, in the present invention, the second speed threshold may be set to 400 rpm to 450 rpm, the first speed threshold may be set to 500 rpm to 550 rpm, and the second speed threshold may be smaller than the first speed threshold.
In the above embodiment, before the comparison of the oil pressure values, the rotation speed values of the engine may be compared, and when the rotation speed value of the engine is lower than the second rotation speed threshold, the oil pressure values may not be continuously monitored, so that the loss of the oil pressure sensor is reduced.
EXAMPLE six
As shown in fig. 6, in any of the above embodiments, the method for warning of engine oil pressure further includes:
step 602: acquiring first data of the engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
step 604: setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
step 606: under the condition that the rotating speed value of the engine is smaller than or equal to the second rotating speed threshold value, the step of acquiring the first data of the engine is executed again; the second rotation speed threshold value is smaller than the first rotation speed threshold value;
step 608: under the condition that the rotating speed value of the engine is smaller than or equal to the first rotating speed threshold value and/or the fuel injection quantity is smaller than or equal to the first fuel injection quantity threshold value, the step of obtaining the first data of the engine is executed again;
step 610: setting the time when the rotating speed value of the engine is greater than a first rotating speed threshold and the fuel injection quantity is greater than a first fuel injection quantity threshold as starting time;
step 612: continuously comparing the magnitude relation between the engine oil pressure value and a first dynamic threshold within a first preset time period from the starting time;
step 614: under the condition that the engine oil pressure value is continuously smaller than a first dynamic threshold value within a first preset time, performing engine oil pressure early warning;
step 616: and under the condition that the engine oil pressure value is continuously greater than the first dynamic threshold value within the second preset time, stopping the engine oil pressure early warning.
In the above embodiment, when the rotation speed value of the engine is less than or equal to the first rotation speed threshold or the fuel injection amount is less than or equal to the first fuel injection amount threshold, the first data of the engine, that is, the rotation speed value and the fuel injection amount of the engine, are obtained again, and as long as one of the data does not reach the preset standard, the diagnosis of the oil pressure state of the engine is stopped, and the step of obtaining the first data of the engine is performed again.
Further, the method for determining that the engine oil pressure value of the engine is too low further comprises the step of determining that the pressure of the engine system is too low and engine oil pressure warning is required when the engine speed is greater than 550 revolutions per minute and the current fuel injection amount is greater than 5mg and the engine oil pressure is less than 150kPa within 5 minutes.
Further, when the engine speed is greater than 550 rpm and the current fuel injection amount is greater than 5mg, and the engine oil pressure is greater than 200kPa within 3 minutes, it is determined that the engine system pressure is low and the trend is vanished, and the early warning of the engine oil pressure needs to be stopped.
EXAMPLE seven
In the embodiment of the invention, an engine oil pressure sensor is used for obtaining an accurate engine oil pressure value, then a dynamic low oil pressure limit value (namely a first dynamic threshold value) is set according to the engine oil temperature and the engine rotating speed value, and a real-time measured value of the engine oil pressure is compared with the first dynamic threshold value in a corresponding state (the rotating speed value and the engine oil temperature value of the same engine) in a MAP (three-dimensional MAP) checking mode to perform engine oil pressure early warning, so that the safety of the engine and a user is improved, and false failure alarm is reduced.
Specifically, as shown in fig. 7:
step 702: acquiring four variable numerical values of a rotating speed value, an oil injection quantity, an engine oil pressure value and an engine oil temperature value of the engine from the data stream;
step 704: setting an engine oil pressure low dynamic threshold (a first dynamic threshold) according to the engine oil temperature value and the rotating speed value;
step 706: judging the rotating speed value of the engine, and detecting whether the rotating speed value of the engine is greater than 400 revolutions per minute;
step 708: detecting whether the rotating speed value of the engine is greater than 550 revolutions per minute and whether the fuel injection quantity is greater than 5 mg; judging the engine rotating speed value and the fuel injection quantity based on the condition that the engine rotating speed value is more than 400 revolutions per minute; if one condition is not met, stopping comparing the diagnostic engine oil pressure value with the first dynamic threshold value, and acquiring first data again;
step 710: detecting whether the engine oil pressure value is smaller than a first dynamic threshold value or not and the duration time reaches 5min, and comparing the engine oil pressure value with the corresponding first dynamic threshold value by checking MAP;
step 712: under the condition that the engine oil pressure value is smaller than a first dynamic threshold value and the duration time reaches 5min, performing engine oil pressure early warning;
step 714: detecting whether the engine oil pressure value is greater than a first dynamic threshold value and the duration time reaches 5min under the condition that the engine oil pressure value does not meet the condition that the engine oil pressure value is less than the first dynamic threshold value and the duration time reaches 5 min; under the condition that the engine oil pressure value does not meet the condition that the engine oil pressure value is larger than a first dynamic threshold value and the duration time reaches 5min, acquiring first data again;
step 716: and stopping the engine oil pressure early warning under the condition that the engine oil pressure value is greater than the first dynamic threshold and the duration time reaches 5 min.
In the MAP three-dimensional graph, an x axis of the MAP three-dimensional graph points to an engine speed value, a y axis of the MAP three-dimensional graph points to an engine oil temperature value, a z axis of the MAP three-dimensional graph points to a first dynamic threshold value, and a formula of the first dynamic threshold value calculated through the engine speed value and the engine oil temperature value is as follows:
z＝f(x1,y1)；
wherein z is a first dynamic threshold, x1For actually obtained engine speed values, y1The actual obtained engine oil temperature value.
Further, the first dynamic threshold value z and the actually obtained oil pressure value z are compared1Making a comparison if z1And if the duration is less than z for 5min, performing engine oil pressure early warning.
Example eight
As shown in fig. 8, a second embodiment of the present invention provides an engine oil pressure warning device 800, including: the first acquisition unit 802: the engine oil temperature control system is used for obtaining first data of an engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine; first setting unit 804: the engine oil temperature control device is used for setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data; first comparing unit 806: and the engine oil pressure early warning is carried out under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within the first preset time.
In the embodiment of the invention, first data of an engine are obtained through a first obtaining unit, the first data comprise a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine, a first dynamic threshold value is set through a first setting unit according to the rotating speed and the engine oil temperature in the first data, after the first dynamic threshold value is set, the engine oil pressure value in the first data is compared with the first dynamic threshold value through a first comparing unit, and the engine oil pressure value is smaller than the first dynamic threshold value within a first preset duration, so that engine oil pressure early warning is carried out.
In the above embodiment, the first dynamic threshold is set according to the engine speed value and the engine oil temperature value in the first data, and the first dynamic threshold is a dynamic threshold with low engine oil pressure and is used for comparing with the engine oil pressure value to warn that the engine oil pressure is too low.
In the above embodiment, the engine oil pressure early warning is performed when the engine oil pressure value is smaller than the first dynamic threshold within the first preset time period, where the first preset time period may be 3 minutes to 5 minutes, that is, when the engine oil pressure value is lower than the dynamic threshold and the duration time reaches 3 minutes to 5 minutes, the engine oil pressure early warning is performed, and the engine oil pressure early warning is prevented from being falsely reported by monitoring the engine oil pressure in real time.
In any of the above embodiments, the engine oil pressure is monitored in real time by the engine oil pressure sensor, and the first dynamic threshold is dynamically adjusted by the engine oil temperature and the engine speed, so that the engine oil pressure value and the first dynamic threshold can be compared in the same engine state, and safety and accuracy are both considered, so that damage to the engine and a user is avoided, and false alarm is reduced and the failure rate is reduced.
Example nine
In any of the above embodiments, the first data further includes an amount of fuel injected, and before the engine oil pressure warning is performed, the warning device for the engine oil pressure further includes: the third comparison unit is used for comparing the magnitude relation between the fuel injection quantity and the first fuel injection quantity threshold value; and comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value under the condition that the rotating speed value of the engine is greater than the first rotating speed threshold value and the fuel injection quantity is greater than the first fuel injection quantity threshold value.
In the above embodiment, before the engine oil pressure warning is performed by comparing the oil pressure value and the first dynamic threshold value by the first comparing unit, the rotation speed value and the injected fuel quantity of the engine are compared with the first rotation speed threshold value and the first injected fuel quantity threshold value by the second comparing unit and the third comparing unit, respectively, and the oil pressure value and the first dynamic threshold value are compared in the case that the rotation speed value of the engine is greater than the first rotation speed threshold value and the injected fuel quantity is greater than the first injected fuel threshold value, optionally, the first rotation speed threshold value is set to 500 rpm to 550 rpm, the first injected fuel quantity threshold value is set to 5mg, that is, in the case that the rotation speed value of the engine is greater than 500 rpm to 550 rpm and the injected fuel quantity is greater than 5mg, the oil pressure value and the first dynamic threshold value are compared, wherein only in the case that the rotation speed value and the injected fuel quantity of the engine both satisfy the set conditions, the comparison of the oil pressure values can be made.
In any of the embodiments, the acquired first data includes the rotation speed value, the oil pressure value, the oil temperature value, and the fuel injection quantity of the engine, and the detection range is wider because the present invention only relates to the information of the rotation speed value, the oil pressure value, the oil temperature value, and the fuel injection quantity, and is not limited by other conditions.
Example ten
In any of the above embodiments, the step of comparing the engine oil pressure value within the first preset time period with the magnitude of the first dynamic threshold specifically includes: setting the time that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value as starting time; and continuously comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value within a first preset time period from the starting time.
In the above embodiment, the step of comparing the oil pressure value with the first dynamic threshold specifically includes setting a starting time for comparing the oil pressure value with the first dynamic threshold, setting a time when the rotation speed value of the engine is greater than the first rotation speed threshold and the fuel injection amount is greater than the first fuel injection amount threshold as the starting time, and starting at the starting time, continuously comparing the oil pressure value with the first dynamic threshold, where the duration is a first preset duration.
Furthermore, the engine oil pressure value needs to be continuously detected within a first preset time period, and because the first dynamic threshold is set according to the rotating speed value and the engine oil temperature value of the engine, the first dynamic threshold is continuously changed within the first preset time period, so that the engine oil pressure value and the first dynamic threshold can be compared in the same engine state, and the accuracy of engine oil pressure early warning is improved.
EXAMPLE eleven
In any of the above embodiments, the early warning device for engine oil pressure further includes: and stopping the engine oil pressure early warning under the condition that the engine oil pressure value is greater than the first dynamic threshold value within the second preset time.
In the above embodiment, when the engine oil pressure value is greater than the first dynamic threshold and continues for the second preset time period, the engine oil pressure warning is stopped, that is, the engine oil pressure value is continuously monitored in the above state of performing the engine oil pressure warning, optionally, the second preset time period may be set to 3 minutes to 5 minutes, so that when the engine oil pressure value is greater than the first dynamic threshold, the engine oil pressure value is continuously monitored for 3 minutes to 5 minutes, and when the engine oil pressure value is continuously greater than the first dynamic threshold within the time period of 3 minutes to 5 minutes, the engine oil pressure warning is stopped.
In any of the above embodiments, before comparing the magnitude relationship between the rotational speed value of the engine and the first rotational speed threshold, the engine warning further includes: under the condition that the rotating speed value of the engine is smaller than or equal to the second rotating speed threshold value, the step of acquiring the first data of the engine is executed again; the second rotational speed threshold is less than the first rotational speed threshold.
In the above embodiment, before comparing the magnitude relationship between the engine speed value and the first speed threshold, the relationship between the engine speed value and the second speed threshold is compared, and in the case that the engine speed value is smaller than the second speed threshold, the first data of the engine is acquired again, wherein the second speed threshold is smaller than the first speed threshold, in the present invention, the second speed threshold may be set to 400 rpm to 450 rpm, the first speed threshold may be set to 500 rpm to 550 rpm, and the second speed threshold is smaller than the first speed threshold.
In the above embodiment, before the comparison of the oil pressure values, the rotation speed values of the engine may be compared, and when the rotation speed value of the engine is lower than the second rotation speed threshold, the oil pressure values may not be continuously monitored, so that the loss of the oil pressure sensor is reduced.
Example twelve
In any of the above embodiments, the engine oil pressure warning device further includes: and under the condition that the rotating speed value of the engine is smaller than or equal to the first rotating speed threshold value and/or the fuel injection quantity is smaller than or equal to the first fuel injection quantity threshold value, the step of acquiring the first data of the engine is executed again.
In the above embodiment, when the rotation speed value of the engine is less than or equal to the first rotation speed threshold or the fuel injection amount is less than or equal to the first fuel injection amount threshold, the first data of the engine, that is, the rotation speed value and the fuel injection amount of the engine, are obtained again, and as long as one of the data does not reach the preset standard, the diagnosis of the oil pressure state of the engine is stopped, and the step of obtaining the first data of the engine is performed again.
EXAMPLE thirteen
A third aspect of the present invention provides an early warning device for engine oil pressure, including: a memory for storing a program of an early warning method of an engine oil pressure; a processor for executing a program of an early warning method of engine oil pressure to realize: the method for early warning of engine oil pressure in any one of the above embodiments.
In the above embodiment, the early warning device for engine oil pressure includes: a memory for storing a program of an early warning method of an engine oil pressure; a processor for executing a program of an early warning method of engine oil pressure to realize: the method for early warning of engine oil pressure according to any one of the above embodiments, therefore, the information pushing device has all the advantages of the method for early warning of engine oil pressure according to any one of the above embodiments.
Example fourteen
A fourth aspect of the present invention provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the method of warning of engine oil pressure as in any one of the embodiments described above.
In the above embodiment, the readable storage medium has stored thereon a program or instructions which, when executed by the processor, implement the steps of the method for warning of engine oil pressure as in any of the above embodiments, and therefore, the readable storage medium includes all the advantageous effects of the method for warning of engine oil pressure as provided in any of the above embodiments.
Example fifteen
A fifth aspect of the invention provides an engine, comprising: the early warning device for the engine oil pressure in any one of the above embodiments; and/or a readable storage medium as in any of the embodiments described above.
In the above embodiment, the engine includes the early warning device for engine oil pressure in any of the above embodiments; and/or the readable storage medium in any of the above embodiments, therefore, the engine includes all the benefits of the engine oil pressure warning device and the readable storage medium provided in any of the above embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An early warning method for engine oil pressure is characterized by comprising the following steps:
acquiring first data of an engine, wherein the first data comprises a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
setting a first dynamic threshold value according to the engine speed value and the engine oil temperature value in the first data;
and under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within a first preset time, carrying out engine oil pressure early warning.
2. The method of warning engine oil pressure according to claim 1, wherein the first data further includes an amount of fuel injected, and the method of warning engine oil pressure further includes, before the warning engine oil pressure, the step of:
and comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold value within a first preset time period under the condition that the rotating speed value of the engine is greater than a first rotating speed threshold value and the oil injection quantity is greater than a first oil injection quantity threshold value.
3. The method for early warning of engine oil pressure according to claim 2, wherein the step of comparing the magnitude of the engine oil pressure value within a first preset time period with the magnitude of the first dynamic threshold specifically comprises:
setting the time that the rotating speed value of the engine is greater than a first rotating speed threshold value and the fuel injection quantity is greater than a first fuel injection quantity threshold value as starting time;
and continuously comparing the magnitude relation between the engine oil pressure value and the first dynamic threshold within a first preset time length from the starting time.
4. The warning method of engine oil pressure according to any one of claims 1 to 3, characterized by further comprising:
and stopping the engine oil pressure early warning under the condition that the engine oil pressure value is continuously greater than the first dynamic threshold value within a second preset time.
5. The engine oil pressure warning method according to claim 2, wherein the engine oil pressure warning further includes, before comparing a magnitude relationship between the rotation speed value of the engine and the first rotation speed threshold:
under the condition that the rotating speed value of the engine is less than or equal to the second rotating speed threshold value, the step of acquiring the first data of the engine is executed again;
the second rotational speed threshold is less than the first rotational speed threshold.
6. The method of warning engine oil pressure as recited in claim 2, further comprising:
and under the condition that the rotating speed value of the engine is smaller than or equal to a first rotating speed threshold value and/or the fuel injection quantity is smaller than or equal to a first fuel injection quantity threshold value, executing the step of acquiring the first data of the engine again.
7. The early warning device of engine oil pressure, its characterized in that, the early warning device of engine oil pressure includes:
a first acquisition unit: the engine oil temperature control method comprises the steps of obtaining first data of an engine, wherein the first data comprise a rotating speed value, an engine oil pressure value and an engine oil temperature value of the engine;
a first setting unit: the engine oil temperature control device is used for setting a first dynamic threshold value according to the engine rotating speed value and the engine oil temperature value in the first data;
a first comparison unit: and the engine oil pressure value is used for carrying out engine oil pressure early warning under the condition that the engine oil pressure value is continuously smaller than the first dynamic threshold value within a first preset time.
8. An early warning device of engine oil pressure, characterized by includes:
a memory for storing a program of an early warning method of an engine oil pressure;
a processor for executing a program of the early warning method of engine oil pressure to realize: the warning method of engine oil pressure according to any one of claims 1 to 6.
9. A readable storage medium on which a program or instructions are stored, characterized in that the program or instructions, when executed by a processor, implement the steps of the method of warning of engine oil pressure according to any one of claims 1 to 6.
10. An engine, characterized in that the engine comprises:
the engine oil pressure warning device according to claim 7; and/or the presence of a gas in the atmosphere,
the early warning device of engine oil pressure according to claim 8; and/or the presence of a gas in the gas,
the readable storage medium of claim 9.
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