CN106224054A - A kind of engine oil level measuring method and electronic control unit - Google Patents

A kind of engine oil level measuring method and electronic control unit Download PDF

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Publication number
CN106224054A
CN106224054A CN201610753771.7A CN201610753771A CN106224054A CN 106224054 A CN106224054 A CN 106224054A CN 201610753771 A CN201610753771 A CN 201610753771A CN 106224054 A CN106224054 A CN 106224054A
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China
Prior art keywords
oil level
engine oil
level
engine
electronic machine
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CN201610753771.7A
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CN106224054B (en
Inventor
么丽丽
申加伟
王贵琛
房佳威
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/10Indicating devices; Other safety devices
    • F01M11/12Indicating devices; Other safety devices concerning lubricant level

Abstract

The present invention proposes a kind of engine oil level measuring method and electronic control unit.A kind of engine oil level measuring method, is applied to electronic control unit, and the method includes: according to electronic machine dipstick measuring machine oil liquid level;The engine oil level measured according to the last time, computer oil mass difference;Distance that in the time period between moment according to current time and last measuring machine oil liquid level, vehicle travels and Oil Consumption of Engine, calculate the oil level of the distance internal consumption that electromotor travels at described vehicle;Judge the difference of the oil level of the distance internal consumption that oil level difference and electromotor travel at described vehicle, if more than setting value;If greater than setting value, then the engine oil level recorded is inaccurate, gives a warning;If no more than setting value, then the engine oil level recorded is accurate, is stored by described engine oil level and shows.Use the engine oil level measuring method that the present invention proposes, it is possible to use electronic machine dipstick records engine oil level accurately.

Description

A kind of engine oil level measuring method and electronic control unit
Technical field
The present invention relates to technical field of engine control, particularly relate to a kind of engine oil level measuring method and Electronic Control list Unit.
Background technology
During electromotor uses, need machine oil that internal bearings is carried out cooling, when engine shortage of oil, It is likely to result in engine damage.Accordingly, it would be desirable to periodically carry out engine sump tank inner engine oil service condition observing measuring, in order to Add machine oil in time, it is ensured that electromotor can normally work.Traditional method uses oil rule to measure engine sump tank inner engine oil Liquid level, by observe oil rule leaching mark position in machine oil, learn oil level number.
Along with development and the application of sensor technology, and user is to convenience and the raising of intelligent requirement, based on biography The electronic machine dipstick of sensor technology has the trend progressively substituting tradition oil rule.Abroad, electronic machine dipstick has become heavy truck mark Join.At home, also there is the electromotor apolegamy electronic machine dipstick of a lot of high-end vehicle, but there is no good control using method, Measurement to engine oil level is inaccurate.
Summary of the invention
In order to solve above-mentioned defect of the prior art and deficiency, the present invention proposes a kind of engine oil level measuring method and electricity Sub-control unit, it is possible to utilize electronic machine dipstick to record engine oil level accurately.
A kind of engine oil level measuring method, is applied to electronic control unit, and the method includes:
According to the magnitude of voltage of electronic machine dipstick output, obtain engine oil level;
Calculate engine oil level and the difference of described engine oil level that the last time measures, and poor by described mathematic interpolation oil level Value;
Calculate current time and on once measuring machine oil liquid level moment between time period in, the road that vehicle travels Journey;
The distance travelled according to Oil Consumption of Engine and described vehicle, calculates electromotor in the distance that described vehicle travels The oil level consumed;
Judge the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value, if more than setting value;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value, more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is inaccurate, gives a warning;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value, no more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is accurate, is stored by described engine oil level And show.
Preferably, described in determine with engine oil level that electronic machine dipstick records inaccurate after, the method also includes:
Recycling electronic machine dipstick measuring machine oil liquid level also judges that the engine oil level recorded is the most accurate;
If in the number of repetition set, the engine oil level recorded is the most inaccurate, then give a warning;
If in certain one-shot measurement in the number of repetition set, the engine oil level recorded is accurately, then stop weight Repetition measurement amount, stores the engine oil level recorded and shows.
Preferably, after described engine oil level is stored and shown, the method also includes:
Judge that whether described engine oil level is less than the minimum liquid level set;
If described engine oil level is less than the minimum liquid level set, then sends the too low warning of engine oil level, calculate also simultaneously The oil level that display requires supplementation with;
If described engine oil level is not less than the minimum liquid level of setting, then machine that described engine oil level corresponding is calculated and be shown Oil mass is available for the mileage number travelled.
Preferably, the described magnitude of voltage according to the output of electronic machine dipstick, obtain engine oil level, including:
In judging the setting time period before current time, whether electromotor is constantly in flameout state;
If in the setting time period before current time, electromotor is not constantly in flameout state, then terminate machine Oil liquid level is measured;
If in the setting time period before current time, electromotor is constantly in flameout state, then when judging current Whether the time that quarter, distance powered on to electronic machine dipstick is more than setting duration;
If current time distance was more than to the time that electronic machine dipstick powers on sets duration, then read electronic machine dipstick defeated The magnitude of voltage gone out, obtains engine oil level;
If current time distance no more than sets duration to the time that electronic machine dipstick powers on, then when repeating to judge current Whether the time that quarter, distance powered on to electronic machine dipstick is more than setting duration, until current time distance powers on to electronic machine dipstick Time more than set duration time, read electronic machine dipstick output magnitude of voltage, obtain engine oil level.
Preferably, in judging the setting time period before current time, after electromotor is constantly in flameout state, Before judging whether current time distance is more than setting duration to the time that electronic machine dipstick powers on, the method also includes:
Judge that electronic machine dipstick is the most faulty;If electronic machine dipstick is faulty, then give a warning, terminate engine oil level Measure.
Preferably, the magnitude of voltage of described reading electronic machine dipstick output, obtain engine oil level, including:
Read the magnitude of voltage of electronic machine dipstick output, inquiry electronic machine dipstick magnitude of voltage and engine oil level synopsis, obtain Engine oil level;
Angle of inclination according to electromotor and the setting angle of electronic machine dipstick, be modified described engine oil level.
Preferably, described in the oil level that require supplementation with is calculated and be shown, including:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that the highest engine oil level set is corresponding is corresponding with described engine oil level is taken difference Process, obtain the oil level required supplementation with;
The oil level required supplementation with described in display.
Preferably, described in be calculated and be shown oil level corresponding to described engine oil level be available for travel mileage number, including:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that described engine oil level is corresponding is corresponding with minimum liquid level taking difference process, obtaining can Use oil level;
According to described available oil level and Oil Consumption of Engine, calculate the mileage number that described available oil level is available for travelling.
A kind of electronic control unit, including:
Initial measurement unit, for obtaining engine oil level according to the magnitude of voltage of electronic machine dipstick output;
First computing unit, the difference of engine oil level with described engine oil level for calculating last measurement, and by institute State mathematic interpolation oil level difference;
Second computing unit, for calculate current time and on once measuring machine oil liquid level moment between time period In, the distance that vehicle travels;
3rd computing unit, for the distance travelled according to Oil Consumption of Engine and described vehicle, calculates electromotor in institute State the oil level of the distance internal consumption that vehicle travels;
Judge processing unit, for judging that described oil level difference and described electromotor are in the distance that described vehicle travels Whether the difference of the oil level consumed is more than setting value;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value is more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is inaccurate, and gives a warning;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value is not more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is accurate, is stored by described engine oil level And show.
Preferably, described judgement processing unit determine with engine oil level that electronic machine dipstick records inaccurate after, described Judge that processing unit is additionally operable to:
Repeat to drive described initial measurement unit to utilize electronic machine dipstick measuring machine oil liquid level, and judge the machine oil liquid recorded Position is the most accurate;
If in the number of repetition set, the engine oil level recorded is the most inaccurate, then give a warning;
If in certain one-shot measurement in the number of repetition set, the engine oil level recorded is accurately, then stop weight Drive described initial measurement unit to utilize electronic machine dipstick measuring machine oil liquid level again, the engine oil level recorded is stored and shows Show.
Preferably, described electronic control unit also includes:
Second judges processing unit, for when described engine oil level is stored by described judgement processing unit and shows After, it is judged that whether described engine oil level is less than the minimum liquid level set;
If described engine oil level is less than the minimum liquid level set, then sends the too low warning of engine oil level, calculate also simultaneously The oil level that display requires supplementation with;
If described engine oil level is not less than the minimum liquid level of setting, then machine that described engine oil level corresponding is calculated and be shown Oil mass is available for the mileage number travelled.
Preferably, described initial measurement unit, including:
First initial treatment unit, in judging the setting time period before current time, electromotor is the most always It is in flameout state;
If in the setting time period before current time, electromotor is not constantly in flameout state, then terminate machine Oil liquid level is measured;
Second initial treatment unit, for during when the setting before current time of the described first initial treatment unit judges Between in section, when electromotor is constantly in flameout state, it is judged that the time that current time distance powers on to electronic machine dipstick is the biggest In setting duration;
If current time distance was more than to the time that electronic machine dipstick powers on sets duration, then read electronic machine dipstick defeated The magnitude of voltage gone out, obtains engine oil level;
If current time distance no more than sets duration to the time that electronic machine dipstick powers on, then when repeating to judge current Whether the time that quarter, distance powered on to electronic machine dipstick is more than setting duration, until current time distance powers on to electronic machine dipstick Time more than set duration time, read electronic machine dipstick output magnitude of voltage, obtain engine oil level.
Preferably, described electronic control unit also includes:
Breakdown judge unit, within first initial treatment unit judges setting time period before current time, After electromotor is constantly in flameout state, power on to electronic machine dipstick in the second initial treatment unit judges current time distance Time whether more than setting duration before, it is judged that electronic machine dipstick is the most faulty;If electronic machine dipstick is faulty, then send out Go out warning, terminate engine oil level and measure.
Preferably, described second initial treatment unit reads the magnitude of voltage of electronic machine dipstick output, when obtaining engine oil level, Specifically for:
Read the magnitude of voltage of electronic machine dipstick output, inquiry electronic machine dipstick magnitude of voltage and engine oil level synopsis, obtain Engine oil level;
Angle of inclination according to electromotor and the setting angle of electronic machine dipstick, be modified described engine oil level.
Preferably, described second judges when processing unit is calculated and be shown the oil level required supplementation with, specifically for:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that the highest engine oil level set is corresponding is corresponding with described engine oil level is taken difference Process, obtain the oil level required supplementation with;
The oil level required supplementation with described in display.
Preferably, described second judges that processing unit is calculated and be shown oil level corresponding to described engine oil level and is available for travelling Mileage number time, specifically for:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that described engine oil level is corresponding is corresponding with minimum liquid level taking difference process, obtaining can Use oil level;
According to described available oil level and Oil Consumption of Engine, calculate the mileage number that described available oil level is available for travelling.
The present invention proposes a kind of engine oil level measuring method, is applied to electronic control unit, first with electronic machine dipstick Record engine oil level;Then the engine oil level measured according to the last time and the difference of described engine oil level, computer oil mass difference; According to Oil Consumption of Engine calculate current time and on once measuring machine oil liquid level moment between time period in, electromotor The oil level consumed;Finally judge the difference of the oil level of the distance internal consumption that described oil level difference and electromotor travel at vehicle Whether value is more than setting value;If greater than setting value, then the engine oil level that explanation utilizes electronic machine dipstick to record is inaccurate, sends Warning;If no more than setting value, then described engine oil level stored and show.Use the engine oil level that the present invention proposes Measuring method, when the engine oil level of confirmatory measurement is inaccurate, gives a warning, and reminds user maintenance electronic machine dipstick;Only when When the engine oil level of confirmatory measurement is accurate, just engine oil level is exported, therefore, it is possible to utilize electronic machine dipstick to record machine accurately Oil liquid level.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is the schematic flow sheet of a kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 4 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 5 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 6 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 7 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 8 is the schematic flow sheet of another kind of engine oil level measuring method disclosed in the embodiment of the present invention;
Fig. 9 is the structural representation of a kind of electronic control unit disclosed in the embodiment of the present invention;
Figure 10 is the structural representation of another kind of electronic control unit disclosed in the embodiment of the present invention;
Figure 11 is the structural representation of another kind of electronic control unit disclosed in the embodiment of the present invention;
Figure 12 is the structural representation of another kind of electronic control unit disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the invention discloses a kind of engine oil level measuring method, be applied to electronic control unit, see Fig. 1 institute Showing, the method includes:
S101, the magnitude of voltage exported according to electronic machine dipstick, obtain engine oil level;
Concrete, the electronic machine dipstick used in the embodiment of the present invention is actually a hot wire type liquid level sensor. Having resistance wire described hot wire type liquid level sensor is internally installed, resistance wire is immersed in inside machine oil, the height meeting of engine oil level The resistance making resistance wire is different, and then the magnitude of voltage making liquid level sensor export is different.The different electricity of liquid level sensor output Pressure value correspond to different engine oil levels respectively, and this corresponding relation is stored in inside electronic control unit with the form of corresponding table. When, after electronic machine dipstick output voltage values, electronic control unit, according to described magnitude of voltage, by the corresponding table of inquiry, can obtain machine Oil liquid level.
Clearly limit it should be noted that described electronic machine dipstick is not made by the embodiment of the present invention.Described electronic machine Dipstick is not limited only to the hot wire type liquid level sensor that the embodiment of the present invention is used, and any can be used to measuring machine oil liquid level, energy Enough reach the sensor device of embodiment of the present invention purpose, such as ultrasonic electronic oil rule, or infrared electronic oil rule etc., all Can be used.
S102, the engine oil level calculating last time measurement and the difference of described engine oil level, and by described mathematic interpolation machine Oil mass difference;
Concrete, in electromotor design process, when electronic machine dipstick mates with engine sump tank, by electronics machine oil The oil level that the engine oil level that chi records is corresponding with this engine oil level, is stored in electronic control unit with the form of synopsis. After electronic control unit records engine oil level by electronic machine dipstick, by inquiring about the right of described engine oil level and oil level According to table, the i.e. available oil level corresponding with the engine oil level recorded.Electronic control unit can store the machine measured each time Oil liquid level, can obtain and preserve, by inquiry synopsis, the oil level that the engine oil level measured each time is corresponding simultaneously.Work as electricity Sub-control unit is after this records engine oil level, and inquiry synopsis obtains the oil level that this engine oil level recorded is corresponding. The oil level that oil level that the engine oil level that recorded last time is corresponding is corresponding with the engine oil level that this records takes at difference Reason, i.e. can get oil level difference.
S103, calculate current time and on once measuring machine oil liquid level moment between time period in, vehicle travels Distance;
Concrete, when measuring machine oil liquid level each time, time when electronic control unit record is measured, and with for the moment Carve the vehicle driving mileage of speedometer for automobile recorder trace.After this electronic control unit records engine oil level, survey with this Vehicle driving mileage during amount, deducts vehicle driving mileage during last measurement, i.e. can get current time and surveys with last The distance that in time period between the moment of amount engine oil level, vehicle travels.
S104, the distance travelled according to Oil Consumption of Engine and described vehicle, calculate what electromotor travelled at described vehicle The oil level of distance internal consumption;
Concrete, the oil level of electromotor traveling unit mileage consumption is referred to as the engine oil consumption of electromotor.Owing to road conditions are different And engine operating environments is different, Oil Consumption of Engine is change, but each electromotor has an average engine oil consumption, Its change is small.In embodiments of the present invention, certain value in electromotor average engine oil consumption excursion is taken as engine motor oil Consumption, for calculating the oil level that electromotor consumes in the process of moving.The engine oil consumption of electronic control unit electromotor is multiplied by institute State the distance that vehicle travels, i.e. can get the oil level of the distance internal consumption that electromotor travels at described vehicle.
S105, judge the oil level of the distance internal consumption that described oil level difference travels at described vehicle with described electromotor Difference, if more than setting value.
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value, more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is inaccurate, gives a warning;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value, no more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is accurate, is stored by described engine oil level And show;
Concrete, the embodiment of the present invention is chosen certain value in the excursion of the small average engine oil consumption of electromotor of change and is made For Oil Consumption of Engine, in error allowed band, it is believed that the Oil Consumption of Engine chosen is accurately, due to vehicle The measurement travelling distance is also accurately, and therefore electronic control unit is travelled at described vehicle by calculated electromotor The oil level of distance internal consumption is accurately.Electronic control unit to described oil level difference and described electromotor at described vehicle The oil level of the distance internal consumption travelled carries out taking difference and processes, the i.e. available engine oil level recorded by this electronic machine dipstick The error of the oil level difference obtained.If error is more than setting value, then the embodiment of the present invention thinks that this utilizes electronics machine oil The engine oil level that chi records is inaccurate;If error is not more than setting value, then it is assumed that this utilizes the machine that electronic machine dipstick records Oil liquid level is accurate.
In embodiments of the present invention, described setting value is 1 liter, if i.e. being utilized, by this, the machine oil that electronic machine dipstick records The error of the oil level difference that liquid level obtains is within 1 liter, then it is assumed that this engine oil level utilizing electronic machine dipstick to record is accurate Really, otherwise it is assumed that this engine oil level utilizing electronic machine dipstick to record is inaccurate.
It should be noted that according to the requirement to electronic machine dipstick certainty of measurement, can arbitrarily adjust setting value: if right The certainty of measurement of electronic machine dipstick requires higher, then use less setting value;If the certainty of measurement of electronic machine dipstick is wanted Ask relatively low, then can use bigger setting value.Setting value is not clearly limited by the embodiment of the present invention, any can reach The setting value of comparative purpose, can be used.
The present invention proposes a kind of engine oil level measuring method, is applied to electronic control unit, first with electronic machine dipstick Record engine oil level;Then the engine oil level measured according to the last time and the difference of described engine oil level, computer oil mass difference; Calculate current time and on once measuring machine oil liquid level moment between time period in, the oil level that electromotor consumes;? Whether the difference of the rear oil level judging distance internal consumption that described oil level difference and electromotor travel at vehicle is more than setting Value;If greater than setting value, then the engine oil level that explanation utilizes electronic machine dipstick to record is inaccurate, gives a warning;If it is little In setting value, then described engine oil level stored and show;The engine oil level measuring method that the present invention proposes, only when testing When the engine oil level of card measurement is accurate, just engine oil level is exported;When the engine oil level of confirmatory measurement is inaccurate, send police Accuse, remind user maintenance electronic machine dipstick, therefore, it is possible to utilize electronic machine dipstick to record engine oil level accurately.
Optionally, in another embodiment of the present invention, the engine oil level that electronic machine dipstick records is determined with described in After inaccurate, as in figure 2 it is shown, the method also includes:
Repeated execution of steps S201~S205, utilize the engine oil level that electronic machine dipstick measuring machine oil liquid level judgement record The most accurate;
Concrete, in embodiment of the method shown in step S201 in the embodiment of the present invention~S205 corresponding diagram 1 step S101~S105, its particular content refers to the embodiment of the method shown in corresponding diagram 1, and here is omitted.
If in the number of repetition set, the engine oil level recorded is the most inaccurate, then perform step S206, send police Accuse;
If in certain one-shot measurement in the number of repetition set, the engine oil level recorded is accurately, then stop weight Repetition measurement amount, performs step S207, is stored by the engine oil level recorded and show.
Concrete, in order to get rid of accidentalia or the impact on electronic machine dipstick certainty of measurement of other uncertain factor, When electronic control unit judges that the engine oil level that electronic machine dipstick records is inaccurate, further engine oil level can be carried out weight New measurement, to confirm the most real misalignment of electronic machine dipstick.
In embodiments of the present invention, judge that the engine oil level that electronic machine dipstick records is forbidden for the first time when electronic control unit Time really, it is repeated two more times measurement process.If during this twice measurement, electronic control unit all judges that electronic machine dipstick is surveyed The engine oil level obtained is inaccurate, then give a warning;If in certain one-shot measurement of repeated measure, electronic control unit judges to survey The engine oil level obtained is accurate, then stop continuing to measure, stored by the engine oil level recorded and show.
Optionally, in another embodiment of the present invention, after described engine oil level is stored and shows, such as figure Shown in 3, the method also includes:
S306, judge that described engine oil level is whether less than the minimum liquid level set;
If described engine oil level is less than the minimum liquid level set, then performs step S307, send the too low police of engine oil level Accuse, the oil level that require supplementation with is calculated and be shown simultaneously;
If described engine oil level is not less than the minimum liquid level of setting, then performs step S308, described machine is calculated and be shown The oil level that oil liquid level is corresponding is available for the mileage number travelled.
Concrete, contain the highest engine oil level and minimum engine oil level at electronic control unit internal memory, when Electronic Control list When the engine oil level that unit records is less than minimum engine oil level, in order to ensure that electromotor can the most normally work, gives a warning and carry Awake user adds machine oil, and calculates the oil level required supplementation with, and provides data support for artificial repairing or automatic oil recharging device.
If in-engine engine oil level is not below minimum liquid level, then can ensure that engine work, now, Electronic control unit, according to engine oil level, enquiry machine oil liquid level and oil level synopsis, obtains corresponding with described engine oil level Oil level, calculates, according to Oil Consumption of Engine, the mileage number that residue oil level is available for travelling the most further, makes user slap in real time Hold in-engine oil level.
Concrete, in embodiment of the method shown in step S301 in the embodiment of the present invention~S305 corresponding diagram 1 step S101~S105, its particular content refers to the embodiment of the method shown in corresponding diagram 1, and here is omitted.
Optionally, in another embodiment of the present invention, the described magnitude of voltage according to the output of electronic machine dipstick, obtain machine Oil liquid level, shown in Figure 4, specifically include:
S401, judge the setting time period before current time in, whether electromotor is constantly in flameout state;
If in the setting time period before current time, electromotor is not constantly in flameout state, then terminate machine Oil liquid level is measured;
Concrete, after engine misses, the machine oil in engine body will slowly flow back to oil sump, and this process needs one The fixed time.So, if electronic control unit is after the electromotor short time is flame-out, carry out engine oil level measurement, the machine recorded Oil liquid level is inaccurate, because the most a certain amount of machine oil does not flow back to engine sump tank.Therefore, in the embodiment of the present invention In, if electromotor is flame-out exceedes the setting time period (for example, it can be set to being half an hour), i.e. before current time Setting in the time period, electromotor is not to be constantly in flameout state, then, when electronic control unit power-up initializing again, do not enter Row engine oil level is measured.
If in the setting time period before current time, electromotor is constantly in flameout state, then perform step S402, judge that whether time that current time distance powers on to electronic machine dipstick is more than setting duration;
If current time distance was more than to the time that electronic machine dipstick powers on sets duration, then perform step S403, reading The magnitude of voltage of power taking handset dipstick output, obtains engine oil level;
If current time distance no more than sets duration to the time that electronic machine dipstick powers on, then when repeating to judge current Whether the time that quarter, distance powered on to electronic machine dipstick is more than setting duration, until current time distance powers on to electronic machine dipstick Time more than set duration time, perform step S403, read electronic machine dipstick output magnitude of voltage, obtain engine oil level.
Concrete, in the starting stage that electronic machine dipstick powers on, the resistance of its internal resistance wire is unstable, now The magnitude of voltage of electronic machine dipstick output is the most unstable, and the engine oil level obtained with magnitude of voltage now is inaccurate certainly.Cause This, in the embodiment of the present invention, after powering on to electronic machine dipstick, wait for a period of time, and makes the resistance wire in electronic machine dipstick fill Divide preheating, after waiting that its magnitude of voltage exported is stably, then read the magnitude of voltage of electronic machine dipstick output, it is ensured that the machine oil recorded The accuracy of liquid level.
In the present embodiment, after powering on 2 seconds to electronic machine dipstick, read the magnitude of voltage of electronic machine dipstick output.
Concrete, in embodiment of the method shown in step S404 in the embodiment of the present invention~S407 corresponding diagram 1 step S102~S105, its particular content refers to the embodiment of the method shown in corresponding diagram 1, and here is omitted.
Optionally, in another embodiment of the present invention, shown in Figure 5, when performing step S501, judging current In the setting time period before quarter, after electromotor is constantly in flameout state, perform step S503, judge current time away from Before whether the time powered on to electronic machine dipstick is more than setting duration, the method also includes:
S502, judge that electronic machine dipstick is the most faulty;If electronic machine dipstick is faulty, then give a warning, terminate machine Oil liquid level is measured.
Concrete, electronic control unit, after powering on to electronic machine dipstick, first determines whether whether electronic machine dipstick has event Barrier, if occur open circuit, short circuit or other cause the fault of cisco unity malfunction, if electronic machine dipstick is faulty, then send Warning, reminds user to overhaul, and exits engine oil level measurement procedure.
Step S501 in the embodiment of the present invention, the step in S503~the S508 embodiment of the method shown in corresponding diagram 4 respectively Rapid S401, S402~S407, its particular content refers to the embodiment of the method shown in corresponding diagram 4, and here is omitted.
Optionally, in another embodiment of the present invention, the magnitude of voltage of described reading electronic machine dipstick output, obtain machine Oil liquid level, shown in Figure 6, specifically include:
S603, the magnitude of voltage of reading electronic machine dipstick output, inquiry electronic machine dipstick magnitude of voltage and engine oil level synopsis, Obtain engine oil level;
S604, according to the angle of inclination of electromotor and the setting angle of electronic machine dipstick, described engine oil level is repaiied Just.
Concrete, the gradient in vehicle parking section and the setting angle of electronic machine dipstick, all can be to the survey of engine oil level Amount produces impact.Utilize the obliquity sensor on vehicle, such as gyroscope, the angle of inclination of vehicle, i.e. car engine can be obtained The angle of inclination of machine.And the setting angle of electronic machine dipstick, it is the parameter set the electromotor design phase, and fixes not Become, contain this fixed angle at electronic control unit internal memory.Electronic control unit is according to the angle of inclination of electromotor and electronics The engine oil level recorded is modified by the setting angle of oil rule, can get rid of the gradient and the electronic machine in vehicle parking section The impact on engine oil level of the setting angle of dipstick.
Step S601 in the embodiment of the present invention, S602, S605~S608, the respectively embodiment of the method shown in corresponding diagram 4 In step S401, S402, S404~S407, the content of the embodiment of the method that its particular content is shown in Figure 4, the most not Repeat again.
Optionally, in another embodiment of the present invention, described in the oil level that require supplementation with is calculated and be shown, see figure Shown in 7, specifically include:
S707, calculate the oil level that described engine oil level is corresponding;
Concrete, preserve inside electronic control unit and calculated, characterize engine oil level corresponding with oil level The synopsis of relation, electronic control unit after utilizing electronic machine dipstick to record engine oil level, by enquiry machine oil liquid level with Oil level synopsis, i.e. can get the oil level that described engine oil level is corresponding.
S708, the oil level that oil level corresponding to the highest engine oil level set is corresponding with described engine oil level is taken Difference processes, and obtains the oil level required supplementation with;
The oil level required supplementation with described in S709, display.
Concrete, step S701 in the embodiment of the present invention~S706, S710 embodiment of the method shown in corresponding diagram 3 respectively In step S301~S306, S308, the content of the embodiment of the method that its particular content is shown in Figure 3, the most superfluous State.
Optionally, in another embodiment of the present invention, machine oil that described engine oil level corresponding is calculated and be shown described in Amount is available for the mileage number travelled, shown in Figure 8, specifically includes:
S808, calculate the oil level that described engine oil level is corresponding;
Concrete, preserve inside electronic control unit and calculated, characterize engine oil level corresponding with oil level The synopsis of relation, electronic control unit after utilizing electronic machine dipstick to record engine oil level, by enquiry machine oil liquid level with Oil level synopsis, i.e. can get the oil level that described engine oil level is corresponding.
S809, the oil level that the oil level that described engine oil level is corresponding is corresponding with minimum liquid level is taken difference process, Obtain available oil level;
S810, according to described available oil level and Oil Consumption of Engine, calculate described available oil level be available for travel in Number of passes.
Concrete, with available oil level divided by Oil Consumption of Engine, obtain the mileage number that described oil level is available for travelling.
Step S801 in the embodiment of the present invention~step S301 in the embodiment of the method shown in S807 corresponding diagram 3~ S307, the content of the embodiment of the method that its particular content is shown in Figure 3, here is omitted.
Another embodiment of the present invention also discloses a kind of electronic control unit, shown in Figure 9, this electronic control unit bag Include:
Initial measurement unit 101, for obtaining engine oil level according to the magnitude of voltage of electronic machine dipstick output;
First computing unit 102, the difference of engine oil level with described engine oil level for calculating last measurement, and by Described mathematic interpolation oil level difference;
Second computing unit 103, for calculate current time and on once measuring machine oil liquid level moment between time Between in section, the distance that vehicle travels;
3rd computing unit 104, for the distance travelled according to Oil Consumption of Engine and described vehicle, calculates electromotor and exists The oil level of the distance internal consumption that described vehicle travels;
Judge processing unit 105, for judging the road that described oil level difference travels at described vehicle with described electromotor Whether the difference of the oil level of journey internal consumption is more than setting value.
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value is more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is inaccurate, and gives a warning;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle Value is not more than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is accurate, is stored by described engine oil level And show;
Concrete, the specific works content of each several part in the embodiment of the present invention, refer to the interior of corresponding embodiment of the method Holding, here is omitted.
The present invention proposes a kind of electronic control unit, when measuring machine oil liquid level, first by initial measurement unit 101 profit Engine oil level is recorded with electronic machine dipstick;Then the engine oil level that the first computing unit 102 was measured according to the last time and described machine The difference of oil liquid level, computer oil mass difference;Second computing unit 103 and the 3rd computing unit 104 calculate current time with In time period between the moment of last measuring machine oil liquid level, the oil level that electromotor consumes;Finally judge processing unit 105 Judge whether the difference of the oil level of the distance internal consumption that described oil level difference and electromotor travel at vehicle is more than setting value; If greater than setting value, then the engine oil level that explanation utilizes electronic machine dipstick to record is inaccurate, gives a warning;If no more than set Definite value, then store described engine oil level and show;The electronic control unit that the present invention proposes, can pass through electronics machine oil Chi measuring machine oil liquid level also carries out Accuracy Verification, only when the engine oil level measured is accurate, is just exported by engine oil level;When When the engine oil level of measurement is inaccurate, give a warning, remind user maintenance electronic machine dipstick, therefore, it is possible to utilize electronic machine dipstick Record engine oil level accurately.
Optionally, in another embodiment of the present invention, it is judged that processing unit 105 determines with electronic machine dipstick and records Engine oil level inaccurate after, it is judged that processing unit 105 is additionally operable to:
Repeat to drive initial measurement unit 101 to utilize electronic machine dipstick measuring machine oil liquid level, and judge the machine oil liquid recorded Position is the most accurate;
If in the number of repetition set, the engine oil level recorded is the most inaccurate, then give a warning;
If in certain one-shot measurement in the number of repetition set, the engine oil level recorded is accurately, then stop weight Drive described initial measurement unit 101 to utilize electronic machine dipstick measuring machine oil liquid level again, the engine oil level recorded is stored And show.
Concrete, in embodiments of the present invention, it is judged that processing unit 105 has calling function, it is judged that processing unit 105 can To send driving instruction to initial measurement unit 101, drive initial measurement unit 101 to carry out engine oil level measurement, and will measure Value is sent to the first computing unit 102, makes the first computing unit 102 complete self work.
It should be noted that initial measure unit 101 is started working, and when recording engine oil level, can drive follow-up respectively Partial response ground performs the work of self, the engine oil level measurement side that each several part of electronic control unit proposes according to the present invention Method, completes a whole set of technical scheme.
Optionally, in another embodiment of the present invention, shown in Figure 10, described electronic control unit also includes:
Second judges processing unit 106, for when judging that described engine oil level is stored and shows by processing unit 105 After, it is judged that whether described engine oil level is less than the minimum liquid level set;
If described engine oil level is less than the minimum liquid level set, then sends the too low warning of engine oil level, calculate also simultaneously The oil level that display requires supplementation with;
If described engine oil level is not less than the minimum liquid level of setting, then machine that described engine oil level corresponding is calculated and be shown Oil mass is available for the mileage number travelled.
Concrete, in the embodiment of the present invention, second judges the specific works content of processing unit 106, refers to the side of correspondence The content of method embodiment, here is omitted.
Optionally, in another embodiment of the present invention, shown in Figure 11, initial measurement unit 101, including:
First initial treatment unit 1011, in judging the setting time period before current time, whether electromotor It is constantly in flameout state;
If in the setting time period before current time, electromotor is not constantly in flameout state, then terminate machine Oil liquid level is measured;
Second initial treatment unit 1012, for judging before current time when described first initial treatment unit 1011 The setting time period in, when electromotor is constantly in flameout state, it is judged that current time distance to electronic machine dipstick power on time Between whether more than setting duration;
If current time distance was more than to the time that electronic machine dipstick powers on sets duration, then read electronic machine dipstick defeated The magnitude of voltage gone out, obtains engine oil level;
If current time distance no more than sets duration to the time that electronic machine dipstick powers on, then when repeating to judge current Whether the time that quarter, distance powered on to electronic machine dipstick is more than setting duration, until current time distance powers on to electronic machine dipstick Time more than set duration time, read electronic machine dipstick output magnitude of voltage, obtain engine oil level.
Concrete, the specific works content of each several part in the embodiment of the present invention, refer to the interior of corresponding embodiment of the method Holding, here is omitted.
Optionally, in another embodiment of the present invention, as shown in figure 12, described initial measurement unit 101 also includes:
Breakdown judge unit 1013, for when the first initial treatment unit 1011 judges the setting before current time Between in section, after electromotor is constantly in flameout state, judge that current time distance is to electricity at the second initial treatment unit 1012 Before whether the time that handset dipstick powers on is more than setting duration, it is judged that electronic machine dipstick is the most faulty;If electronics machine oil Chi is faulty, then give a warning, and terminates engine oil level and measures.
Concrete, the specific works content of breakdown judge unit 1013 in the embodiment of the present invention, the method referring to correspondence The content of embodiment, here is omitted.
Optionally, in another embodiment of the present invention, to read electronic machine dipstick defeated for the second initial treatment unit 1012 The magnitude of voltage gone out, when obtaining engine oil level, specifically for:
Read the magnitude of voltage of electronic machine dipstick output, inquiry electronic machine dipstick magnitude of voltage and engine oil level synopsis, obtain Engine oil level;
Angle of inclination according to electromotor and the setting angle of electronic machine dipstick, be modified described engine oil level.
Concrete, the specific works content of the second initial treatment unit 1012 in the embodiment of the present invention, refer to correspondence The content of embodiment of the method, here is omitted.
Optionally, in another embodiment of the present invention, second judges that processing unit 106 is calculated and be shown and requires supplementation with Oil level time, specifically for:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that the highest engine oil level set is corresponding is corresponding with described engine oil level is taken difference Process, obtain the oil level required supplementation with;
The oil level required supplementation with described in display.
Concrete, in the embodiment of the present invention, second judges the specific works content of processing unit 106, refers to the side of correspondence The content of method embodiment, here is omitted.
Optionally, in another embodiment of the present invention, second judges that processing unit 106 is calculated and be shown described machine oil When oil level corresponding to liquid level is available for the mileage number travelled, specifically for:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that described engine oil level is corresponding is corresponding with minimum liquid level taking difference process, obtaining can Use oil level;
According to described available oil level and Oil Consumption of Engine, calculate the mileage number that described available oil level is available for travelling.
Concrete, in the embodiment of the present invention, second judges the specific works content of processing unit 106, refers to the side of correspondence The content of method embodiment, here is omitted.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one The widest scope caused.

Claims (16)

1. an engine oil level measuring method, it is characterised in that be applied to electronic control unit, the method includes:
According to the magnitude of voltage of electronic machine dipstick output, obtain engine oil level;
Calculate engine oil level and the difference of described engine oil level that the last time measures, and by described mathematic interpolation oil level difference;
Calculate current time and on once measuring machine oil liquid level moment between time period in, the distance that vehicle travels;
The distance travelled according to Oil Consumption of Engine and described vehicle, calculates the distance internal consumption that electromotor travels at described vehicle Oil level;
Judge the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle, be No more than setting value;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle, greatly In setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is inaccurate, gives a warning;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle, no More than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is accurate, is stored by described engine oil level and shows Show.
Method the most according to claim 1, it is characterised in that described in determine with the engine oil level that electronic machine dipstick records After inaccurate, the method also includes:
Recycling electronic machine dipstick measuring machine oil liquid level also judges that the engine oil level recorded is the most accurate;
If in the number of repetition set, the engine oil level recorded is the most inaccurate, then give a warning;
If in certain one-shot measurement in the number of repetition set, the engine oil level recorded is accurately, then stop repeating to survey Amount, stores the engine oil level recorded and shows.
Method the most according to claim 1, it is characterised in that after described engine oil level is stored and shown, should Method also includes:
Judge that whether described engine oil level is less than the minimum liquid level set;
If described engine oil level is less than the minimum liquid level set, then sends the too low warning of engine oil level, be calculated and be shown simultaneously The oil level required supplementation with;
If described engine oil level is not less than the minimum liquid level of setting, then oil level that described engine oil level corresponding is calculated and be shown It is available for the mileage number travelled.
Method the most according to claim 1, it is characterised in that the described magnitude of voltage according to the output of electronic machine dipstick, obtains Engine oil level, including:
In judging the setting time period before current time, whether electromotor is constantly in flameout state;
If in the setting time period before current time, electromotor is not constantly in flameout state, then terminate machine oil liquid Position is measured;
If in the setting time period before current time, electromotor is constantly in flameout state, then judge current time away from From the time powered on to electronic machine dipstick whether more than setting duration;
If current time distance was more than to the time that electronic machine dipstick powers on sets duration, then read the output of electronic machine dipstick Magnitude of voltage, obtains engine oil level;
If current time distance no more than sets duration to the time that electronic machine dipstick powers on, then repeat to judge current time away from From the time powered on to electronic machine dipstick whether more than setting duration, until current time distance to electronic machine dipstick power on time Between more than set duration time, read electronic machine dipstick output magnitude of voltage, obtain engine oil level.
Method the most according to claim 4, it is characterised in that in judging the setting time period before current time, sends out After motivation is constantly in flameout state, set judging whether current time distance was more than to the time that electronic machine dipstick powers on Before duration, the method also includes:
Judge that electronic machine dipstick is the most faulty;If electronic machine dipstick is faulty, then give a warning, terminate engine oil level and survey Amount.
Method the most according to claim 4, it is characterised in that the magnitude of voltage of described reading electronic machine dipstick output, obtains Engine oil level, including:
Read the magnitude of voltage of electronic machine dipstick output, inquiry electronic machine dipstick magnitude of voltage and engine oil level synopsis, obtain machine oil Liquid level;
Angle of inclination according to electromotor and the setting angle of electronic machine dipstick, be modified described engine oil level.
Method the most according to claim 3, it is characterised in that described in the oil level that require supplementation with is calculated and be shown, including:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that the highest engine oil level set is corresponding is corresponding with described engine oil level is taken difference process, Obtain the oil level required supplementation with;
The oil level required supplementation with described in display.
Method the most according to claim 3, it is characterised in that described in machine oil that described engine oil level corresponding is calculated and be shown Amount is available for the mileage number travelled, including:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that described engine oil level is corresponding is corresponding with minimum liquid level takes difference process, obtain available machine Oil mass;
According to described available oil level and Oil Consumption of Engine, calculate the mileage number that described available oil level is available for travelling.
9. an electronic control unit, it is characterised in that including:
Initial measurement unit, for obtaining engine oil level according to the magnitude of voltage of electronic machine dipstick output;
First computing unit, the difference of engine oil level with described engine oil level for calculating last measurement, and by described difference Value computer oil mass difference;
Second computing unit, for calculate current time and on once measuring machine oil liquid level moment between time period in, The distance that vehicle travels;
3rd computing unit, for the distance travelled according to Oil Consumption of Engine and described vehicle, calculates electromotor at described car The oil level of distance internal consumption travelled;
Judge processing unit, for judging the distance internal consumption that described oil level difference travels at described vehicle with described electromotor The difference of oil level whether more than setting value;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle is big In setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is inaccurate, and gives a warning;
If the difference of the oil level of the distance internal consumption that described oil level difference and described electromotor travel at described vehicle is not More than setting value, it is determined that the engine oil level utilizing electronic machine dipstick to record is accurate, is stored by described engine oil level and shows Show.
Electronic control unit the most according to claim 9, it is characterised in that described judgement processing unit determines with electricity After engine oil level that handset dipstick records is inaccurate, described judgement processing unit is additionally operable to:
Repeat to drive described initial measurement unit to utilize electronic machine dipstick measuring machine oil liquid level, and judge that the engine oil level recorded is No accurately;
If in the number of repetition set, the engine oil level recorded is the most inaccurate, then give a warning;
If in certain one-shot measurement in the number of repetition set, the engine oil level recorded is accurately, then stop repeating to drive Dynamic described initial measurement unit utilizes electronic machine dipstick measuring machine oil liquid level, is stored by the engine oil level recorded and shows.
11. electronic control units according to claim 9, it is characterised in that described electronic control unit also includes:
Second judges processing unit, for after described engine oil level is stored and shows by described judgement processing unit, sentences Whether disconnected described engine oil level is less than the minimum liquid level set;
If described engine oil level is less than the minimum liquid level set, then sends the too low warning of engine oil level, be calculated and be shown simultaneously The oil level required supplementation with;
If described engine oil level is not less than the minimum liquid level of setting, then oil level that described engine oil level corresponding is calculated and be shown It is available for the mileage number travelled.
12. electronic control units according to claim 9, it is characterised in that described initial measurement unit, including:
First initial treatment unit, in judging the setting time period before current time, whether electromotor is constantly in Flameout state;
If in the setting time period before current time, electromotor is not constantly in flameout state, then terminate machine oil liquid Position is measured;
Second initial treatment unit, for when described first initial treatment unit judges setting time period before current time In, when electromotor is constantly in flameout state, it is judged that whether current time distance was more than to the time that electronic machine dipstick powers on sets Timing is long;
If current time distance was more than to the time that electronic machine dipstick powers on sets duration, then read the output of electronic machine dipstick Magnitude of voltage, obtains engine oil level;
If current time distance no more than sets duration to the time that electronic machine dipstick powers on, then repeat to judge current time away from From the time powered on to electronic machine dipstick whether more than setting duration, until current time distance to electronic machine dipstick power on time Between more than set duration time, read electronic machine dipstick output magnitude of voltage, obtain engine oil level.
13. electronic control units according to claim 12, it is characterised in that described electronic control unit also includes:
Breakdown judge unit, for, within first initial treatment unit judges setting time period before current time, starting After machine is constantly in flameout state, the second initial treatment unit judges current time distance to electronic machine dipstick power on time Between whether more than setting duration before, it is judged that electronic machine dipstick is the most faulty;If electronic machine dipstick is faulty, then send police Accuse, terminate engine oil level and measure.
14. electronic control units according to claim 12, it is characterised in that described second initial treatment unit reads electricity The magnitude of voltage of handset dipstick output, when obtaining engine oil level, specifically for:
Read the magnitude of voltage of electronic machine dipstick output, inquiry electronic machine dipstick magnitude of voltage and engine oil level synopsis, obtain machine oil Liquid level;
Angle of inclination according to electromotor and the setting angle of electronic machine dipstick, be modified described engine oil level.
15. electronic control units according to claim 11, it is characterised in that described second judges that processing unit calculates also During the oil level that display requires supplementation with, specifically for:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that the highest engine oil level set is corresponding is corresponding with described engine oil level is taken difference process, Obtain the oil level required supplementation with;
The oil level required supplementation with described in display.
16. electronic control units according to claim 11, it is characterised in that described second judges that processing unit calculates also Show when the oil level that described engine oil level is corresponding is available for the mileage number travelled, specifically for:
Calculate the oil level that described engine oil level is corresponding;
The oil level that the oil level that described engine oil level is corresponding is corresponding with minimum liquid level takes difference process, obtain available machine Oil mass;
According to described available oil level and Oil Consumption of Engine, calculate the mileage number that described available oil level is available for travelling.
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CN110926553A (en) * 2019-12-13 2020-03-27 深圳市元征科技股份有限公司 Vehicle engine oil consumption detection method and device, vehicle-mounted equipment and storage medium
CN112377283A (en) * 2020-11-26 2021-02-19 湖南行必达网联科技有限公司 Automatic engine oil compensation control method and device and engine system
CN112576373A (en) * 2020-11-30 2021-03-30 潍柴动力股份有限公司 Method and device for monitoring engine wear

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CN110926553A (en) * 2019-12-13 2020-03-27 深圳市元征科技股份有限公司 Vehicle engine oil consumption detection method and device, vehicle-mounted equipment and storage medium
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