CN117345373A - Method, device, equipment and medium for calculating engine oil temperature - Google Patents
Method, device, equipment and medium for calculating engine oil temperature Download PDFInfo
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- CN117345373A CN117345373A CN202311482233.5A CN202311482233A CN117345373A CN 117345373 A CN117345373 A CN 117345373A CN 202311482233 A CN202311482233 A CN 202311482233A CN 117345373 A CN117345373 A CN 117345373A
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- 239000010705 motor oil Substances 0.000 title claims abstract description 317
- 238000000034 method Methods 0.000 title claims abstract description 60
- 230000000630 rising effect Effects 0.000 claims description 87
- 239000003921 oil Substances 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 238000004590 computer program Methods 0.000 claims description 16
- 238000012937 correction Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
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- 238000010586 diagram Methods 0.000 description 5
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- 238000004140 cleaning Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
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Classifications
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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
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
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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
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
-
- 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
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/005—Controlling temperature of lubricant
-
- 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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The embodiment of the application discloses a method, a device, equipment and a medium for calculating engine oil temperature. Wherein the method comprises the following steps: acquiring the working state of an engine; the working state comprises a starting state and an unactuated state; acquiring an associated parameter which corresponds to the working state and affects the temperature of engine oil; and determining the temperature of the engine oil in the engine under the working state according to the related parameters. According to the technical scheme, corresponding association parameters are acquired aiming at the working state of the engine, and the engine oil temperature in the engine in the working state is determined according to the association parameters, so that the effect of obtaining the engine oil temperature under the condition of no engine oil temperature sensor is achieved, and the cost of the whole vehicle is reduced.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a method, a device, equipment and a medium for calculating engine oil temperature.
Background
The engine oil has the functions of lubricating, cooling, sealing, cleaning and the like on engine system components, is inseparable from functions such as variable valve timing of the VVT, piston cooling and the like, and plays an important role in stable, efficient and reliable operation of the engine.
At present, the main scheme for acquiring the oil temperature is to acquire the oil temperature by configuring an oil temperature sensor in a vehicle, however, the cost is high in this way, and an accurate oil temperature signal cannot be acquired once the sensor fails.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for calculating engine oil temperature, which can calculate the engine oil temperature under the condition of no engine oil temperature sensor and reduce the cost of the whole vehicle.
According to an aspect of the present invention, there is provided a method of calculating an engine oil temperature, the method including:
acquiring the working state of an engine; the working state comprises a starting state and an unactuated state;
acquiring an associated parameter which corresponds to the working state and affects the temperature of engine oil;
and determining the temperature of the engine oil in the engine under the working state according to the related parameters.
According to another aspect of the present invention, there is provided a calculation device of an engine oil temperature, including:
the working state acquisition module is used for acquiring the working state of the engine; the working state comprises a starting state and an unactuated state;
the related parameter acquisition module is used for acquiring related parameters which correspond to the working state and influence the engine oil temperature;
And the engine oil temperature determining module is used for determining the engine oil temperature in the engine under the working state according to the related parameters.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of calculating the oil temperature according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to execute the method for calculating the engine oil temperature according to any one of the embodiments of the present invention.
The technical scheme of the embodiment of the application comprises the following steps: acquiring the working state of an engine; the working state comprises a starting state and an unactuated state; acquiring an associated parameter which corresponds to the working state and affects the temperature of engine oil; and determining the temperature of the engine oil in the engine under the working state according to the related parameters. According to the technical scheme, corresponding association parameters are acquired aiming at the working state of the engine, and the engine oil temperature in the engine in the working state is determined according to the association parameters, so that the effect of obtaining the engine oil temperature under the condition of no engine oil temperature sensor is achieved, and the cost of the whole vehicle is reduced.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for calculating oil temperature according to an embodiment of the present application;
fig. 2 is a flowchart of a method for calculating an oil temperature according to a second embodiment of the present application;
FIG. 3 is a flowchart of a method for calculating an oil temperature according to a third embodiment of the present application;
fig. 4 is a schematic structural diagram of an engine oil temperature calculating device according to a fourth embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device implementing a method for calculating an engine oil temperature according to an embodiment of the present application.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will be made in detail, with reference to the accompanying drawings, in which embodiments of the present invention are shown, and it is apparent that the described embodiments are only some, but not all, embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," "target," and the like in the description and claims of the present invention and in the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for calculating an engine oil temperature according to an embodiment of the present application, where the method may be performed by an engine oil temperature calculating device, and the engine oil temperature calculating device may be implemented in hardware and/or software, and the engine oil temperature calculating device may be configured in an electronic device with data processing capability. As shown in fig. 1, the method includes:
s110, acquiring the working state of an engine; the operating states include an activated state and an inactivated state.
The engine is started, namely the engine is running, the idle state or the running state of the vehicle driven by the engine is the starting state, and engine oil (also called engine lubricating oil) plays roles of lubricating and antifriction, auxiliary cooling, sealing and leakage preventing, rust prevention and corrosion prevention, shock absorption and buffering and the like on the engine in the starting state. An engine being in an inactive state refers to the engine not running, e.g., the vehicle is in a flameout state or the vehicle is powered on but the engine is not started.
Specifically, in one possible method, if the engine speed is detected to be 0, the operating state of the engine may be determined to be an inactive state, if the engine speed is detected to exceed the speed threshold, the operating state of the engine may be determined to be an active state, and if the vehicle is detected to be powered on but the engine is not activated, the engine may be determined to be an inactive state.
S120, acquiring relevant parameters which correspond to the working state and influence the engine oil temperature.
The relevant parameters are parameters which have an influence on the engine oil temperature, such as the engine start time, the engine stop time, the engine water temperature, the ambient temperature and the like. Depending on the operating state of the engine, the relevant parameters affecting the temperature of the engine oil may also be different, for example, in the case where the engine is in a start state, the rotation speed of the engine, the start duration, the intake pressure of the engine, etc. may be relevant parameters corresponding to the start state; in the case where the engine is in an inactive state, the engine's idle time period, engine water temperature, ambient temperature, etc. may be associated parameters corresponding to the inactive state.
Specifically, after the working state of the engine is obtained, determining the relevant parameters which are corresponding to the working state and affect the engine oil temperature according to the working state, and acquiring the relevant parameters through corresponding sensors and the like.
And S130, determining the temperature of engine oil in the engine under the working state according to the related parameters.
Specifically, after the working state of the engine and the related parameters affecting the engine oil temperature corresponding to the working state are obtained, the engine oil temperature in the engine in the working state is calculated according to the related parameters. For example, if the engine is in a starting state, the temperature of the engine oil increased after the engine is started can be calculated according to the started time period of the engine and the operation parameters (such as power, rotating speed and the like) of the engine in the starting time period, and the temperature of the engine in the starting state is determined by combining the temperature of the engine at the starting time and the increased temperature; if the engine is not started, the engine oil temperature in the engine not started can be determined according to related parameters such as the water tank temperature.
The technical scheme of the embodiment of the application comprises the following steps: acquiring the working state of an engine; the working state comprises a starting state and an unactuated state; acquiring an associated parameter which corresponds to the working state and affects the temperature of engine oil; and determining the temperature of the engine oil in the engine under the working state according to the related parameters. According to the technical scheme, corresponding association parameters are acquired aiming at the working state of the engine, and the engine oil temperature in the engine in the working state is determined according to the association parameters, so that the effect of obtaining the engine oil temperature under the condition of no engine oil temperature sensor is achieved, and the cost of the whole vehicle is reduced.
Example two
Fig. 2 is a flowchart of a method for calculating an engine oil temperature according to a second embodiment of the present application, which is optimized based on the foregoing embodiments. The working state in the embodiment of the present application is an inactive state.
As shown in fig. 2, the method in the embodiment of the application specifically includes the following steps:
s210, judging whether the shutdown time of the engine meets the preset time length condition and/or whether the water temperature of the engine meets the preset temperature condition, and if so, executing S220; otherwise, S240 is performed.
The engine stop time is the time that the engine is kept after the last stop, and the longer the engine stop time is, the closer the engine oil temperature is to the outside temperature is; the shorter the engine shutdown period, the more the engine oil temperature has not dropped, and the higher the temperature may be. The preset time length condition and the preset temperature condition can be determined according to practical situations, and the embodiment of the application is not limited to this.
Specifically, in one possible implementation, if the shutdown duration of the engine meets the preset duration condition, S220 is executed; otherwise, S240 is performed. In another possible implementation, if the engine water temperature meets the preset temperature condition, S220 is executed; otherwise, S240 is performed. In still another possible implementation, if the stop time length of the engine satisfies the preset time length condition and the water temperature of the engine satisfies the preset temperature condition, S220 is executed; otherwise, S240 is performed.
S220, acquiring the water temperature and/or the ambient temperature of the engine.
Specifically, at this time, the engine oil temperature is relatively close to the engine water temperature and the environment temperature, the engine water temperature and/or the environment temperature can be obtained, and the subsequent engine oil temperature calculation is performed according to the engine water temperature and/or the environment temperature.
S230, determining the engine oil temperature in the engine non-starting state according to the engine water temperature and/or the environment temperature.
Specifically, in one possible implementation, the engine water temperature is determined as the engine oil temperature in the engine-off state. In another possible implementation, the ambient temperature is determined as the temperature of the engine oil in the engine-off state. In still another possible embodiment, the average value of the engine water temperature and the ambient temperature is determined as the engine oil temperature in the engine-non-started state.
S240, acquiring the stop time of the engine, the ambient temperature and the engine oil temperature at the last time of engine stop.
In this case, the stop time period of the engine is short, that is, the engine oil temperature has not been reduced, and since the stop time period of the engine, the ambient temperature, and the engine oil temperature at the time of the last engine stop all have an influence on the engine oil temperature, the stop time period of the engine, the ambient temperature, and the engine oil temperature at the time of the last engine stop can be obtained and the engine oil temperature can be calculated accordingly.
S250, determining the engine oil temperature in the engine non-starting state according to the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time.
Specifically, the longer the engine stop time, the closer the engine oil temperature is to the ambient temperature, the shorter the engine stop time, the closer the engine oil temperature is to the engine oil temperature at the last engine stop time, and the lower the ambient temperature, the faster the engine oil temperature drops, the higher the ambient temperature, and the slower the engine oil temperature drops, so the engine oil temperature at the engine non-starting state can be calculated according to the engine stop time, the ambient temperature and the engine oil temperature at the last engine stop time.
In this embodiment, optionally, according to the stop time length of the engine, the ambient temperature, and the engine oil temperature when the engine is stopped last time, determining the engine oil temperature in the engine non-starting state includes: determining a second target temperature interval to which the ambient temperature belongs in each second temperature interval; in an engine oil temperature relation table corresponding to a second target temperature interval calibrated in advance, determining the engine oil temperature in an engine non-starting state according to the stop time of the engine and the engine oil temperature when the engine is stopped last time; the engine oil temperature relation table reflects the corresponding relation between the engine oil temperature when the engine is stopped last time and the engine oil temperature after the engine stopping time.
The second temperature ranges are preset, for example, three second temperature ranges are respectively corresponding to a low temperature mode, a normal temperature mode and a high temperature mode, the range of the temperature range corresponding to the low temperature mode is smaller than the first temperature threshold, the range of the temperature range corresponding to the normal temperature mode is larger than the first temperature threshold and smaller than the second temperature threshold, and the range of the temperature range corresponding to the high Wen Moshi is larger than the second temperature threshold.
Specifically, after the environmental temperature is obtained, determining a second target temperature interval to which the environmental temperature belongs in each second temperature interval, and determining an engine oil temperature relation table corresponding to the second target temperature interval, wherein the table can reflect the corresponding relation among the stopping time of the engine, the engine oil temperature when the engine is stopped last time and the engine oil temperature in the engine non-starting state, so that the engine oil temperature in the engine non-starting state can be determined according to the stopping time of the engine and the engine oil temperature when the engine is stopped last time.
Further, the engine oil temperature in the engine non-starting state may be limited, for example, a maximum value and a minimum value may be preset, if the engine oil temperature in the engine non-starting state is between the maximum value and the minimum value, the engine oil temperature in the engine non-starting state may be directly output, otherwise, the maximum value or the minimum value may be output.
In this embodiment, optionally, if the shutdown time of the engine meets a preset time condition and/or the water temperature of the engine meets a preset temperature condition, obtaining the water temperature of the engine and/or the ambient temperature includes: and if the stop time length of the engine is longer than the preset stop time length and/or the difference value between the water temperature of the engine and the ambient temperature is smaller than the preset temperature threshold value, acquiring the water temperature of the engine and/or the ambient temperature.
The preset machine halt time length and the preset temperature threshold value can be determined according to practical situations, and the embodiment of the application is not limited to this.
The technical scheme of the embodiment of the application comprises the following steps: judging whether the shutdown time of the engine meets a preset time length condition and/or whether the water temperature of the engine meets a preset temperature condition, and if so, acquiring the water temperature and/or the environmental temperature of the engine; the temperature of the engine oil in the engine-non-started state is determined based on the engine water temperature and/or the ambient temperature. Otherwise, acquiring the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time. And determining the engine oil temperature in the engine non-starting state according to the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time. According to the technical scheme, the engine oil temperature is calculated under two conditions when the engine is not started, and the effect of accurate calculation results is achieved.
Example III
Fig. 3 is a flowchart of a method for calculating an engine oil temperature according to a third embodiment of the present application, which is optimized based on the foregoing embodiments. The working state in the embodiment of the application is a starting state.
As shown in fig. 3, the method in the embodiment of the application specifically includes the following steps:
at the engine start time, the engine oil temperature in the engine non-start state is determined as the reference engine oil temperature S310.
It should be noted that, the determining process of the engine oil temperature in the engine non-started state may refer to the above embodiment, and the embodiments of the present application are not described herein again.
Specifically, when the engine is not started, the engine oil temperature is in a reduced state or is stable, and after the engine is started, the engine oil is affected by heat transfer of the engine, and the engine oil temperature can rise, so that at the time of starting the engine, a reference engine oil temperature needs to be calculated, and the influence of the engine operation on the engine oil temperature is calculated through subsequent steps on the basis of the reference engine oil temperature. Further, at the time of starting the engine, the temperature of the engine oil in the state where the engine is not started may be calculated, and the temperature may be used as the reference engine oil temperature.
S320, acquiring a reference engine oil temperature, an engine starting time period and an engine oil temperature rising rate.
Specifically, after the reference engine oil temperature is calculated, the engine oil temperature rising rate is obtained in real time within the starting time of the engine, for example, parameters such as the engine speed, the engine power and the like are obtained within each unit time period, and the corresponding engine oil temperature rising rate is determined according to the obtained parameters.
And S330, determining the engine oil temperature in the engine starting state according to the reference engine oil temperature, the engine starting time and the engine oil temperature rising rate.
In this embodiment of the present application, optionally, according to the reference oil temperature, the engine starting duration, and the oil temperature rising rate, determining the oil temperature in the engine starting state includes: determining the engine oil rising temperature in the engine starting time according to the engine starting time and the engine oil temperature rising rate; and determining the engine oil temperature in the engine starting state according to the superposition result of the engine oil rising temperature and the reference engine oil temperature.
Specifically, the oil temperature rising rate may reflect how much the oil temperature rises in a period of time, for example, may be 0.2 degrees celsius per second, and the oil temperature rising temperature in the engine starting period may be calculated according to the engine starting period and the oil temperature rising rate, so as to determine the oil temperature in the engine starting state according to the superposition result of the oil temperature rising temperature and the reference oil temperature.
For example, the engine oil temperature in the engine start state is determined according to the following formula:
Trun＝Tini+∑vi×ti；
wherein, trunk is the engine oil temperature under the engine start state, tini is the benchmark engine oil temperature, v is the engine oil temperature rising rate, t is the engine start time, t can be specifically divided into the sum of a plurality of time periods, each time period is represented by ti, and the engine oil temperature rising rate corresponding to each time period is represented by vi.
In this embodiment of the present application, optionally, according to the engine starting duration and the engine oil temperature rising rate, determining the engine oil rising temperature in the engine starting duration includes steps A1-A4:
step A1, for a unit time period within an engine starting duration, acquiring a target engine speed and a target engine intake pressure within the unit time period.
And step A2, determining a target engine speed and a target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the calibrated corresponding relation among the engine speed, the engine air inlet pressure and the engine oil temperature rising rate.
And step A3, multiplying the target engine oil temperature rising rate by the duration of the unit time period to obtain the engine oil rising temperature corresponding to the unit time period.
And A4, determining the rising temperature of the engine oil in the starting time period of the engine according to the rising temperature of the engine oil corresponding to each unit time period.
The duration of the unit time period may be determined according to practical situations, and the embodiment of the present application does not limit this, and may be, for example, 10 seconds, 2 seconds, or the like.
Specifically, for a unit time period, a target engine speed and a target engine air inlet pressure are obtained in the unit time period, a target engine oil temperature rising rate is determined according to the calibrated corresponding relation among the engine speed, the engine air inlet pressure and the engine oil temperature rising rate, the target engine oil temperature rising rate is multiplied by the duration of the unit time period to obtain the engine oil rising temperature corresponding to the unit time period, and the engine oil rising temperatures of the unit time periods are superposed to obtain the engine oil rising temperature in the engine starting duration.
In this embodiment, optionally, before determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air intake pressure according to the calibrated corresponding relationship between the engine speed, the engine air intake pressure and the engine oil temperature rising rate, the method further includes: acquiring an ambient temperature, and determining a first target temperature interval to which the ambient temperature belongs in each first temperature interval; acquiring a corresponding relation among an engine rotating speed, an engine air inlet pressure and an engine oil temperature rising rate corresponding to a first target temperature interval; correspondingly, according to the corresponding relation among the calibrated engine speed, the engine air inlet pressure and the engine oil temperature rising rate, determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air inlet pressure comprises the following steps: and determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the corresponding relation among the calibrated engine speed, the calibrated engine air inlet pressure and the calibrated engine oil temperature rising rate corresponding to the first target temperature interval.
The first temperature intervals may be preset temperature intervals, for example: the temperature ranges are 5 first temperature ranges, and the temperature ranges are respectively smaller than-30 ℃, larger than or equal to-30 ℃ and smaller than 0 ℃, larger than or equal to 0 ℃ and smaller than 20 ℃, larger than or equal to 20 ℃ and smaller than 30 ℃ and larger than or equal to 30 ℃. The different first temperature intervals correspond to different engine oil temperature rising rates maps, that is, the corresponding relationship among the engine speed, the engine intake air pressure and the engine oil temperature rising rates corresponding to the different first temperature intervals is different.
Specifically, acquiring an ambient temperature, and determining a first target temperature interval to which the ambient temperature belongs in each first temperature interval; and acquiring a corresponding relation among the engine speed, the engine air inlet pressure and the engine oil temperature rising rate corresponding to the first target temperature interval, and determining a target engine speed and a target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the calibrated corresponding relation among the engine speed, the engine air inlet pressure and the engine oil temperature rising rate corresponding to the first target temperature interval.
In this embodiment of the present application, the determining process of the corresponding relationship between the engine speed, the engine intake pressure, and the engine oil temperature rising rate corresponding to the different first temperature intervals may be: when the ambient temperature is in a certain first temperature interval, according to different engine speeds, engine initial temperature Ti under the working condition of engine intake pressure, engine steady-state temperature (balance value reached by engine oil temperature under the working condition) Tw and change time te (duration of time from engine oil initial temperature Ti to engine oil steady-state temperature Tw), calculating the engine oil temperature rising rate corresponding to the first temperature interval, and further obtaining the corresponding relation of the engine speed, engine intake pressure and engine oil temperature rising rate corresponding to the first temperature interval. The calculation formula of the oil temperature rising rate is as follows:
v＝(Tw–Ti)/te；
Where v is the oil temperature rising rate, ti is the oil initial temperature Ti, tw is the oil steady-state temperature, and te is the time period that the oil initial temperature Ti passes to the oil steady-state temperature Tw.
In this embodiment, optionally, according to a result of superposition of the oil rising temperature and the reference oil temperature, the determining the oil temperature in the engine starting state further includes: acquiring the residual service life of target engine oil; counting the target running times of the vehicle under the conditions that the temperature of the vehicle is smaller than a low-temperature threshold value and the running distance is smaller than a distance threshold value after the engine oil is replaced last time; determining a target temperature correction value corresponding to the target running times and the target engine oil residual life based on the corresponding relation among the running times, the engine oil residual life and the temperature correction value; and determining the engine oil temperature in the engine starting state according to the engine oil rising temperature, the superposition result of the reference engine oil temperature and the target temperature correction value.
The remaining life of the target engine oil can be calculated as follows: the driving mileage of the vehicle after the last engine oil replacement is obtained, the driving mileage is divided by the theoretical maintenance mileage (for example, ten thousand kilometers), the percentage of the driving mileage to the theoretical maintenance mileage is obtained, the percentage of the driving mileage to the theoretical maintenance mileage is subtracted by 1, the obtained result is the target engine oil remaining life, the greater the result is, the longer the engine oil remaining life is reflected, the smaller the result is, and the shorter the engine oil remaining life is reflected. The target number of traveling times reflects the degree of deterioration of the engine oil.
In this embodiment of the present application, since different remaining service lives of engine oils and different degradation degrees of engine oils have an influence on the engine oil temperature, the temperature correction value may be determined accordingly to correct the engine oil temperature in the engine start state.
Specifically, after the target engine oil remaining life and the target running times are obtained, determining a target temperature correction value corresponding to the target running times and the target engine oil remaining life based on a corresponding relation among the predetermined running times, the engine oil remaining life and the temperature correction value; and determining the engine oil temperature in the engine starting state according to the engine oil rising temperature, the superposition result of the reference engine oil temperature and the target temperature correction value.
In this embodiment of the present application, optionally, the process of determining the temperature of the engine oil in the engine start state further includes: determining a target upper temperature limit corresponding to the water temperature of the engine in a corresponding relation between the water temperature and the upper temperature limit; if the engine oil temperature in the engine start state is greater than the target upper temperature limit, the target upper temperature limit is determined as the engine oil temperature in the engine start state.
Specifically, after the engine water temperature is obtained, determining a target upper temperature limit corresponding to the engine water temperature in a corresponding relation between the water temperature and the upper temperature limit (specifically, a corresponding relation between a steady-state water temperature (the water temperature reaches an equilibrium value at the moment) and an engine oil highest temperature limit value, and if the engine oil temperature in an engine starting state is greater than the target upper temperature limit, determining the target upper temperature limit as the engine oil temperature in the engine starting state; otherwise, the engine oil temperature in the engine starting state is output.
The technical scheme of the embodiment of the application comprises the following steps: at the moment of starting the engine, determining the engine oil temperature in the state of not starting the engine as the reference engine oil temperature; acquiring a reference engine oil temperature, an engine starting time and an engine oil temperature rising rate; and determining the engine oil temperature in the engine starting state according to the reference engine oil temperature, the engine starting time and the engine oil temperature rising rate. According to the technical scheme, the engine oil temperature in the engine starting state is calculated through the reference engine oil temperature, the engine starting time and the engine oil temperature rising rate, and the effect of accurate calculation results is achieved.
Example IV
Fig. 4 is a schematic structural diagram of an engine oil temperature calculating device according to a fourth embodiment of the present application, where the device may execute the engine oil temperature calculating method according to any embodiment of the present invention, and the engine oil temperature calculating device has functional modules and beneficial effects corresponding to the executing method. As shown in fig. 4, the apparatus includes:
an operating state acquisition module 410, configured to acquire an operating state of an engine; the working state comprises a starting state and an unactuated state;
a related parameter obtaining module 420, configured to obtain a related parameter affecting an engine oil temperature corresponding to the operating state;
The engine oil temperature determining module 430 is configured to determine an engine oil temperature in the engine in the operating state according to the associated parameter.
The technical scheme of the embodiment of the application comprises the following steps: an operating state acquisition module 410, configured to acquire an operating state of an engine; the working state comprises a starting state and an unactuated state; a related parameter obtaining module 420, configured to obtain a related parameter affecting an engine oil temperature corresponding to the operating state; the engine oil temperature determining module 430 is configured to determine an engine oil temperature in the engine in the operating state according to the associated parameter. According to the technical scheme, corresponding association parameters are acquired aiming at the working state of the engine, and the engine oil temperature in the engine in the working state is determined according to the association parameters, so that the effect of obtaining the engine oil temperature under the condition of no engine oil temperature sensor is achieved, and the cost of the whole vehicle is reduced.
Optionally, the working state is an inactive state; the association parameter acquisition module 420 includes:
the first association parameter obtaining unit is used for obtaining the water temperature of the engine and/or the ambient temperature if the stop time length of the engine meets the preset time length condition and/or the water temperature of the engine meets the preset temperature condition;
Accordingly, the oil temperature determination module 430 includes:
a first oil temperature determination unit configured to determine an oil temperature in an engine non-started state based on an engine water temperature and/or an ambient temperature;
otherwise, acquiring the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time;
accordingly, the oil temperature determination module 430 includes:
and the second engine oil temperature determining unit is used for determining the engine oil temperature in the engine non-starting state according to the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time.
Optionally, the working state is a starting state; the apparatus further comprises:
the reference engine oil temperature determining module is used for determining that the engine oil temperature in the engine non-starting state is the reference engine oil temperature at the starting moment of the engine;
the association parameter acquisition module 420 includes:
the second related parameter acquisition unit is used for acquiring the reference engine oil temperature, the engine starting time and the engine oil temperature rising rate;
accordingly, the oil temperature determination module 430 includes:
and the third engine oil temperature determining unit is used for determining the engine oil temperature in the engine starting state according to the reference engine oil temperature, the engine starting time and the engine oil temperature rising speed.
Optionally, the third engine oil temperature determining unit includes:
the rising temperature determining subunit is used for determining the rising temperature of the engine oil in the starting time of the engine according to the starting time of the engine and the rising rate of the engine oil temperature;
and the third engine oil temperature determining subunit is used for determining the engine oil temperature in the engine starting state according to the superposition result of the engine oil rising temperature and the reference engine oil temperature.
Optionally, the temperature-raising determining subunit is specifically configured to:
aiming at a unit time period in the engine starting time, acquiring a target engine speed and a target engine air inlet pressure in the unit time period;
determining a target engine speed and a target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the calibrated corresponding relation among the engine speed, the engine air inlet pressure and the engine oil temperature rising rate;
multiplying the target engine oil temperature rising rate by the duration of the unit time period to obtain an engine oil rising temperature corresponding to the unit time period;
and determining the rising temperature of the engine oil in the starting time of the engine according to the rising temperature of the engine oil corresponding to each unit time period.
Optionally, the apparatus further includes:
The first target temperature interval determining module is used for acquiring the ambient temperature and determining a first target temperature interval to which the ambient temperature belongs in each first temperature interval;
the corresponding relation acquisition module is used for acquiring the corresponding relation among the engine rotating speed, the engine air inlet pressure and the engine oil temperature rising rate corresponding to the first target temperature interval;
correspondingly, according to the corresponding relation among the calibrated engine speed, the engine air inlet pressure and the engine oil temperature rising rate, determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air inlet pressure comprises the following steps:
and determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the corresponding relation among the calibrated engine speed, the calibrated engine air inlet pressure and the calibrated engine oil temperature rising rate corresponding to the first target temperature interval.
Optionally, if the shutdown time of the engine meets a preset time condition and/or the water temperature of the engine meets a preset temperature condition, acquiring the water temperature and/or the ambient temperature of the engine includes:
and if the stop time length of the engine is longer than the preset stop time length and/or the difference value between the water temperature of the engine and the ambient temperature is smaller than the preset temperature threshold value, acquiring the water temperature of the engine and/or the ambient temperature.
Optionally, the second engine oil temperature determining unit includes:
a second target temperature interval determining subunit, configured to determine a second target temperature interval to which the ambient temperature belongs in each second temperature interval;
the second engine oil temperature determining subunit is used for determining the engine oil temperature in the engine non-starting state according to the stop time of the engine and the engine oil temperature when the engine is stopped last time in an engine oil temperature relation table corresponding to a second target temperature interval calibrated in advance; the engine oil temperature relation table reflects the corresponding relation between the engine oil temperature when the engine is stopped last time and the engine oil temperature after the engine stopping time.
Optionally, the apparatus further includes:
the target engine oil residual life acquisition module is used for acquiring the target engine oil residual life;
the target running frequency determining module is used for counting the target running frequency of the vehicle under the conditions that the temperature of the vehicle is smaller than a low-temperature threshold value and the running distance is smaller than a distance threshold value since the last engine oil replacement of the vehicle;
the target temperature correction value determining module is used for determining target temperature correction values corresponding to the target running times and the target engine oil residual life based on the corresponding relation among the running times, the engine oil residual life and the temperature correction values;
And the engine oil temperature determining module is used for determining the engine oil temperature in the engine starting state according to the superposition result of the engine oil rising temperature and the reference engine oil temperature and the target temperature correction value.
Optionally, the apparatus further includes:
the target temperature upper limit determining module is used for determining a target temperature upper limit corresponding to the water temperature of the engine in the corresponding relation between the water temperature and the temperature upper limit;
and the engine oil temperature determining module is used for determining the target upper temperature limit as the engine oil temperature in the engine starting state if the engine oil temperature in the engine starting state is greater than the target upper temperature limit.
The engine oil temperature calculating device provided by the embodiment of the application can execute the engine oil temperature calculating method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Example five
Fig. 5 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 5, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the respective methods and processes described above, such as a calculation method of the engine oil temperature.
In some embodiments, the method of calculating the oil temperature may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the above-described method of calculating the engine oil temperature may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the method of calculating the oil temperature in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (13)
1. A method of calculating an engine oil temperature, the method comprising:
acquiring the working state of an engine; the working state comprises a starting state and an unactuated state;
acquiring an associated parameter which corresponds to the working state and affects the temperature of engine oil;
and determining the temperature of the engine oil in the engine under the working state according to the related parameters.
2. The method of claim 1, wherein the operational state is an inactive state; the acquiring the related parameters affecting the engine oil temperature corresponding to the working state comprises the following steps:
If the stop time length of the engine meets the preset time length condition and/or the water temperature of the engine meets the preset temperature condition, acquiring the water temperature and/or the ambient temperature of the engine;
correspondingly, according to the related parameters, determining the temperature of the engine oil in the engine under the working state comprises the following steps:
determining the temperature of engine oil in an engine non-starting state according to the water temperature and/or the ambient temperature of the engine;
otherwise, acquiring the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time;
correspondingly, according to the related parameters, determining the temperature of the engine oil in the engine under the working state comprises the following steps:
and determining the engine oil temperature in the engine non-starting state according to the stop time of the engine, the ambient temperature and the engine oil temperature when the engine is stopped last time.
3. The method of claim 2, wherein the operating state is a start-up state; the method further comprises the steps of:
at the moment of starting the engine, determining the engine oil temperature in the state of not starting the engine as the reference engine oil temperature;
the acquiring the related parameters affecting the engine oil temperature corresponding to the working state comprises the following steps:
acquiring a reference engine oil temperature, an engine starting time and an engine oil temperature rising rate;
Correspondingly, according to the related parameters, determining the temperature of the engine oil in the engine under the working state comprises the following steps:
and determining the engine oil temperature in the engine starting state according to the reference engine oil temperature, the engine starting time and the engine oil temperature rising rate.
4. The method according to claim 3, wherein determining the oil temperature in the engine-on state based on the reference oil temperature, the engine-on duration, and the oil temperature rise rate includes:
determining the engine oil rising temperature in the engine starting time according to the engine starting time and the engine oil temperature rising rate;
and determining the engine oil temperature in the engine starting state according to the superposition result of the engine oil rising temperature and the reference engine oil temperature.
5. The method of claim 4, wherein determining the oil temperature rise during the engine start time based on the engine start time and the oil temperature rise rate comprises:
aiming at a unit time period in the engine starting time, acquiring a target engine speed and a target engine air inlet pressure in the unit time period;
determining a target engine speed and a target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the calibrated corresponding relation among the engine speed, the engine air inlet pressure and the engine oil temperature rising rate;
Multiplying the target engine oil temperature rising rate by the duration of the unit time period to obtain an engine oil rising temperature corresponding to the unit time period;
and determining the rising temperature of the engine oil in the starting time of the engine according to the rising temperature of the engine oil corresponding to each unit time period.
6. The method of claim 5, wherein prior to determining the target engine speed and the target engine oil temperature rise rate corresponding to the target engine intake pressure based on the calibrated engine speed, engine intake pressure, and oil temperature rise rate correspondence, the method further comprises:
acquiring an ambient temperature, and determining a first target temperature interval to which the ambient temperature belongs in each first temperature interval;
acquiring a corresponding relation among an engine rotating speed, an engine air inlet pressure and an engine oil temperature rising rate corresponding to a first target temperature interval;
correspondingly, according to the corresponding relation among the calibrated engine speed, the engine air inlet pressure and the engine oil temperature rising rate, determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air inlet pressure comprises the following steps:
and determining the target engine speed and the target engine oil temperature rising rate corresponding to the target engine air inlet pressure according to the corresponding relation among the calibrated engine speed, the calibrated engine air inlet pressure and the calibrated engine oil temperature rising rate corresponding to the first target temperature interval.
7. The method according to claim 2, wherein obtaining the engine water temperature and/or the ambient temperature if the engine downtime satisfies a preset length of time condition and/or the engine water temperature satisfies a preset temperature condition, comprises:
and if the stop time length of the engine is longer than the preset stop time length and/or the difference value between the water temperature of the engine and the ambient temperature is smaller than the preset temperature threshold value, acquiring the water temperature of the engine and/or the ambient temperature.
8. The method of claim 2, wherein determining the oil temperature in the engine-out state based on the length of time the engine is shut down, the ambient temperature, and the oil temperature at the last time the engine was shut down, comprises:
determining a second target temperature interval to which the ambient temperature belongs in each second temperature interval;
in an engine oil temperature relation table corresponding to a second target temperature interval calibrated in advance, determining the engine oil temperature in an engine non-starting state according to the stop time of the engine and the engine oil temperature when the engine is stopped last time; the engine oil temperature relation table reflects the corresponding relation between the engine oil temperature when the engine is stopped last time and the engine oil temperature after the engine stopping time.
9. The method of claim 4, wherein determining the oil temperature in the engine start state based on the superposition of the oil rising temperature and the reference oil temperature, further comprises:
Acquiring the residual service life of target engine oil;
counting the target running times of the vehicle under the conditions that the temperature of the vehicle is smaller than a low-temperature threshold value and the running distance is smaller than a distance threshold value after the engine oil is replaced last time;
determining a target temperature correction value corresponding to the target running times and the target engine oil residual life based on the corresponding relation among the running times, the engine oil residual life and the temperature correction value;
and determining the engine oil temperature in the engine starting state according to the engine oil rising temperature, the superposition result of the reference engine oil temperature and the target temperature correction value.
10. The method according to claim 3, claim 4 or claim 9, wherein the process of determining the temperature of the engine oil in the engine start state further comprises:
determining a target upper temperature limit corresponding to the water temperature of the engine in a corresponding relation between the water temperature and the upper temperature limit;
if the engine oil temperature in the engine start state is greater than the target upper temperature limit, the target upper temperature limit is determined as the engine oil temperature in the engine start state.
11. A device for calculating a temperature of engine oil, the device comprising:
the working state acquisition module is used for acquiring the working state of the engine; the working state comprises a starting state and an unactuated state;
The related parameter acquisition module is used for acquiring related parameters which correspond to the working state and influence the engine oil temperature;
and the engine oil temperature determining module is used for determining the engine oil temperature in the engine under the working state according to the related parameters.
12. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of calculating the oil temperature of any one of claims 1-10.
13. A computer readable storage medium storing computer instructions for causing a processor to perform the method of calculating the oil temperature of any one of claims 1-10 when executed.
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| CN202311482233.5A CN117345373A (en) | 2023-11-08 | 2023-11-08 | Method, device, equipment and medium for calculating engine oil temperature |
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| CN202311482233.5A CN117345373A (en) | 2023-11-08 | 2023-11-08 | Method, device, equipment and medium for calculating engine oil temperature |
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