CN112196684A - Method and system for judging diesel engine oil fuel oil dilution - Google Patents
Method and system for judging diesel engine oil fuel oil dilution Download PDFInfo
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- 239000012895 dilution Substances 0.000 title claims abstract description 105
- 238000010790 dilution Methods 0.000 title claims abstract description 105
- 239000000295 fuel oil Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000010710 diesel engine oil Substances 0.000 title claims abstract description 26
- 239000010705 motor oil Substances 0.000 claims abstract description 174
- 239000007788 liquid Substances 0.000 claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000002159 abnormal effect Effects 0.000 claims abstract description 11
- 239000000446 fuel Substances 0.000 claims description 58
- 238000012544 monitoring process Methods 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 19
- 238000004364 calculation method Methods 0.000 claims description 18
- 238000007865 diluting Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/228—Warning displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/11—Oil dilution, i.e. prevention thereof or special controls according thereto
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses a method and a system for judging diesel engine oil fuel oil dilution, which relate to the field of on-line analysis of engine oil fuel oil dilution, and the method comprises the steps of obtaining the liquid level variation of engine oil, and obtaining the moisture content of the engine oil when the liquid level variation is not less than the preset liquid level variation; judging whether the moisture content of the engine oil is abnormal or not based on the acquired moisture content: if yes, judging that the fuel oil is diluted by water; and if not, acquiring the viscosity variation of the engine oil, and calculating the fuel oil dilution rate according to the acquired viscosity variation. The invention can monitor the fuel oil dilution phenomenon in time and can monitor whether the fuel oil is diluted by water.
Description
Technical Field
The invention relates to the field of on-line analysis of engine oil fuel dilution, in particular to a method and a system for judging diesel engine oil fuel dilution.
Background
Under the condition of high pressure, incompletely combusted fuel easily penetrates through a piston ring to enter a crankcase, and engine oil is polluted, so that the engine oil is subjected to fuel dilution. Fuel dilution can lead to a range of undesirable consequences including poor lubrication, increased fuel consumption, increased emissions, etc. Due to the change of an oil injection control strategy, the fuel dilution phenomenon of engine oil is more easily caused by technologies such as direct injection, post injection and the like in the cylinder of the national engine model, and therefore, the monitoring of the fuel dilution is an important item for controlling the quality of the engine oil.
After the fuel dilution occurs, the corresponding fuel consumption will increase, the viscosity of the engine oil will decrease, and the oil volume of the oil pan will also increase. In the prior art, fuel dilution monitoring usually only concerns fuel in a single way, does not take the influence of engine oil into consideration, and does not take the water dilution into consideration, so that the final monitoring result is unilateral and inaccurate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for judging the dilution of diesel engine oil fuel, which can timely monitor the dilution phenomenon of the fuel and can monitor whether the obtained fuel is subjected to the water dilution phenomenon.
In order to achieve the above object, the present invention provides a method for determining diesel engine oil fuel dilution, comprising the steps of:
acquiring the liquid level variation of the engine oil, and acquiring the moisture content of the engine oil when the liquid level variation is not less than the preset liquid level variation;
judging whether the moisture content of the engine oil is abnormal or not based on the acquired moisture content:
if yes, judging that the fuel oil is diluted by water;
and if not, acquiring the viscosity variation of the engine oil, and calculating the fuel oil dilution rate according to the acquired viscosity variation.
On the basis of the technical scheme, the liquid level variation of the engine oil is obtained, and when the liquid level variation is not less than the preset liquid level variation, the moisture content of the engine oil is obtained, and the specific steps comprise:
s101: acquiring the liquid level variation of the engine oil, and turning to S102;
s102: judging whether the liquid level variation is not less than a preset liquid level variation or not based on the acquired liquid level variation, if so, turning to S103, and if not, turning to S101;
s103: the moisture content of the engine oil is obtained.
On the basis of the technical scheme, after judging that the fuel oil is diluted by the water, the method further comprises the following steps: prompt for engine oil replacement is made.
On the basis of the technical scheme, the method for obtaining the viscosity variation of the engine oil and calculating the fuel oil dilution rate according to the obtained viscosity variation comprises the following specific steps:
s401: obtaining the viscosity variation of the engine oil, and turning to S402;
s402: judging whether the viscosity variation is not less than a preset viscosity variation or not based on the obtained viscosity variation, if so, turning to S403, and if not, turning to S404;
s403: calculating the fuel oil dilution rate according to the obtained viscosity variation and outputting the fuel oil dilution rate, and turning to S404;
s404: prompt for engine oil replacement is made.
On the basis of the technical scheme, the fuel oil dilution rate is calculated and obtained according to the obtained viscosity variation and is output, wherein the fuel oil dilution rate is obtained through calculation, and the formula is as follows:
R＝αΔv2+βΔv
where R represents a fuel dilution ratio, Δ v represents a viscosity change amount, and α and β represent calculation coefficients.
On the basis of the technical scheme, the preset viscosity variation is related to the performance of the engine oil.
On the basis of the technical scheme, the preset liquid level variable quantity is related to the volume of the oil pan of the engine.
The invention provides a determination system for diesel engine oil fuel oil dilution, comprising:
an oil level sensor for monitoring a level change of the engine oil;
a moisture sensor for monitoring a moisture content of the engine oil;
an engine oil viscosity sensor for monitoring a change in viscosity of the engine oil;
the output display equipment is used for outputting a result of diluting the water content of the fuel oil and prompting to replace the engine oil when the liquid level variation of the engine oil is not less than the preset liquid level variation and the water content of the engine oil is abnormal according to the monitoring results of the oil level sensor, the water sensor and the engine oil viscosity sensor; when the liquid level variation of the engine oil is not less than the preset liquid level variation, the water content of the engine oil is normal, and the viscosity variation of the engine oil is less than the preset viscosity variation, prompting to replace the engine oil; and when the liquid level variation of the engine oil is not less than the preset liquid level variation, the water content of the engine oil is normal, and the viscosity variation of the engine oil is not less than the preset viscosity variation, calculating to obtain the fuel oil dilution rate and outputting, and simultaneously prompting to replace the engine oil.
On the basis of the technical scheme, the oil level sensor, the moisture sensor and the engine oil viscosity sensor are positioned in an oil pan of the vehicle.
On the basis of the technical scheme, the fuel oil dilution rate is obtained through calculation, and the method specifically comprises the following steps:
according to the viscosity variation quantity obtained by monitoring of the engine oil viscosity sensor, the fuel oil dilution rate is obtained by calculation, and the calculation formula is
R＝αΔv2+βΔv
Where R represents a fuel dilution ratio, Δ v represents a viscosity change amount, and α and β represent calculation coefficients.
Compared with the prior art, the invention has the advantages that: carry out real-time supervision through liquid level variation, moisture content and the viscosity variation to engine oil to can in time monitor when the fuel dilutes the phenomenon and reachs, with the suggestion of carrying out engine oil change, conveniently carry out the timely change of engine oil, and can calculate and obtain the fuel dilution rate, and whether the monitoring obtains the fuel and takes place the moisture and dilute the phenomenon, and the testing result is accurate.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for determining diesel engine oil fuel dilution according to an embodiment of the present invention;
FIG. 2 is a flow chart of calculating a fuel dilution ratio according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for determining the integrity of a data packet according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a diesel engine oil fuel dilution determination system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method for judging diesel engine oil fuel oil dilution, which is characterized in that the liquid level variation, the moisture content and the viscosity variation of engine oil are monitored in real time, so that the engine oil can be timely monitored when the fuel oil dilution phenomenon occurs, the engine oil replacement prompt can be carried out, the fuel oil dilution rate can be calculated, and whether the fuel oil is subjected to the moisture dilution phenomenon or not can be monitored. The embodiment of the invention correspondingly provides a system for judging the diesel engine oil fuel dilution.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a method for determining fuel dilution of diesel engine oil according to an embodiment of the present invention includes the following steps:
s1: the liquid level variation of the engine oil is obtained, and when the liquid level variation is not smaller than the preset liquid level variation, the moisture content of the engine oil is obtained. In the embodiment of the invention, the preset liquid level variation is related to the volume of the oil pan of the engine, and the value of the preset liquid level variation is 3.5 under a possible condition.
S2: judging whether the moisture content of the engine oil is abnormal or not based on the acquired moisture content, if so, going to S3, and if not, going to S4;
s3: and judging that the fuel oil is diluted by water. By monitoring the moisture content change of the engine oil, when the moisture content of the engine oil is abnormal, the current moisture dilution condition of the fuel oil is indicated, and by monitoring the moisture content, the judgment on whether the fuel oil has the moisture dilution phenomenon or not is realized. And when it is determined that the fuel is diluted with water, a prompt to replace the engine oil is given.
S4: and obtaining the viscosity variation of the engine oil, and calculating the fuel oil dilution rate according to the obtained viscosity variation. When the liquid level variation of the engine oil exceeds the preset liquid level variation, it is indicated that the engine oil is abnormal at the moment, because the liquid level variation of the engine oil is maintained at a normal level under a normal condition, even does not change, and when the liquid level variation of the engine oil exceeds the preset liquid level variation, it is indicated that the condition of entering fuel oil exists, so that the liquid level variation of the engine oil exceeds the preset liquid level variation.
When the liquid level variation of the engine oil exceeds the preset liquid level variation, two conditions exist at the moment, which cause the liquid level variation of the engine oil to exceed the preset liquid level variation, one is a water dilution condition, and the other is a fuel oil dilution condition. Therefore, the invention realizes the water dilution condition and the fuel oil dilution condition of the engine oil through the detection of the liquid level variable quantity of the engine oil and the water content of the engine oil, and the two conditions are targeted for detection, and the judgment result is more detailed and accurate compared with the existing detection mode.
In the embodiment of the invention, the liquid level variation of the engine oil is obtained, and when the liquid level variation is not less than the preset liquid level variation, the moisture content of the engine oil is obtained, and the method specifically comprises the following steps:
s101: acquiring the liquid level variable quantity of the engine oil, and turning to S101;
s102: judging whether the liquid level variation is not less than a preset liquid level variation or not based on the acquired liquid level variation, if so, turning to S103, and if not, turning to S101;
s103: the moisture content of the engine oil is obtained.
In the embodiment of the invention, based on the acquired liquid level variation, when the liquid level variation is not less than the preset liquid level variation, the liquid level variation of the engine oil is acquired again, namely when the liquid level variation of the engine oil is normal, the liquid level variation of the engine oil is continuously detected when the liquid level variation of the engine oil indicates that the engine oil does not have a dilution condition. Equivalently, through detecting the liquid level variation of engine oil in real time, when the liquid level variation of engine oil is unusual, continue to detect the moisture content of engine oil and the viscosity variation of engine oil, and the warning of changing of engine oil, guarantee the normal use of vehicle, when the liquid level variation of engine oil is normal, then continue to monitor the liquid level variation of engine oil, through the mode that continuously detects, in time discover that engine oil dilutes unusually, and remind, in order to guarantee the normal use of vehicle.
Referring to fig. 2, in the embodiment of the present invention, a viscosity variation of engine oil is obtained, and a fuel dilution ratio is calculated according to the obtained viscosity variation, and the specific steps include:
s401: obtaining the viscosity variation of the engine oil, and turning to S402;
s402: judging whether the viscosity variation is not less than a preset viscosity variation or not based on the obtained viscosity variation, if so, turning to S403, and if not, turning to S404; the preset viscosity variation in the embodiment of the present invention is related to the engine oil performance, and in a possible implementation manner, the value of the preset viscosity variation is 2.8.
S403: calculating the fuel oil dilution rate according to the obtained viscosity variation and outputting the fuel oil dilution rate, and turning to S404; and calculating the fuel oil dilution rate according to the obtained viscosity variation and outputting the fuel oil dilution rate, wherein the fuel oil dilution rate is obtained through calculation, and the formula is as follows:
R＝αΔv2+βΔv
wherein, R represents the fuel dilution rate, Δ v represents the viscosity variation, α and β represent the calculation coefficient, and the value of α can be 0.0027, and the value of β can be 0.0168.
S404: the prompt of changing the engine oil is convenient for a driver to change the engine oil in time, and the problem that the vehicle breaks down due to dilution of the engine oil and the normal running of the vehicle is influenced is avoided.
Through monitoring the viscosity variation to engine oil, when viscosity variation is less than predetermineeing the viscosity variation, need not to carry out the calculation of fuel dilution rate this moment, only change the warning of engine oil, when viscosity variation is not less than predetermineeing the viscosity variation, through the viscosity variation that the monitoring obtained, carry out the calculation of fuel dilution rate, obtain current fuel dilution rate through calculating, make things convenient for the driver more clear to know current concrete fuel dilution condition, provide the reference for its accurate understanding vehicle condition, and simultaneously, after calculating and obtaining the fuel dilution rate, change the warning of engine oil.
Referring to fig. 3, an overall flow of the method for determining diesel engine oil fuel dilution according to the embodiment of the present invention is specifically:
a: acquiring the liquid level variable quantity of the engine oil, and turning to B;
b: judging whether the liquid level variation is not less than the preset liquid level variation or not based on the acquired liquid level variation, if so, turning to C, and otherwise, turning to A;
c: acquiring the moisture content of the engine oil, judging whether the moisture content of the engine oil is abnormal or not, if so, turning to F, and if not, turning to D;
d: obtaining the viscosity variation of the engine oil, judging whether the viscosity variation is not less than the preset viscosity variation, if so, turning to E, and if not, turning to G;
e: calculating the fuel oil dilution rate according to the obtained viscosity variation and outputting the fuel oil dilution rate, and turning to G;
f: judging that the fuel oil is diluted by water, and turning to G;
g: prompt for engine oil replacement is made.
The method comprises the steps of firstly obtaining the liquid level variation of the engine oil, then judging whether the liquid level variation is not smaller than the preset liquid level variation based on the obtained liquid level variation, if not, continuing to obtain the liquid level variation of the engine oil, if so, obtaining the moisture content of the engine oil, judging whether the moisture content of the engine oil is abnormal, if so, judging that the fuel oil is subjected to moisture dilution, then prompting to replace the engine oil, if normal, obtaining the viscosity variation of the engine oil, judging whether the viscosity variation is not smaller than the preset viscosity variation, if not, calculating to obtain the fuel oil dilution rate according to the obtained viscosity variation and outputting the fuel oil dilution rate, and then prompting to replace the engine oil, and if not, directly prompting to replace the engine oil. Through carrying out real-time supervision to engine oil's liquid level variation, moisture content and viscosity variation to can in time monitor when the fuel dilutes the phenomenon and reachs, and can calculate and obtain the fuel dilution rate, and the monitoring obtains whether the fuel takes place to take place the moisture and dilutes the phenomenon.
The following describes the determination method according to the embodiment of the present invention with reference to an example.
Measure engine oil's liquid level variation, the liquid level variation who obtains engine oil is 5, and it is greater than and predetermines liquid level variation, then carries out the detection of engine oil's moisture content, and the testing result is moisture content normal, then continues to detect engine oil's viscosity variation, and the detection obtains viscosity variation and is 6, and it is greater than and predetermines viscosity variation, then calculates the oil dilution rate according to the viscosity variation that the detection obtained:
R＝0.0027×62+0.0168×6＝0.078
and finally, outputting the calculated fuel oil dilution rate, and simultaneously prompting to replace the engine oil, so that a driver can conveniently and timely replace the engine oil, and the normal running of the vehicle is prevented from being influenced due to the fault of the vehicle.
According to the method for judging the dilution of the diesel engine oil fuel, disclosed by the embodiment of the invention, the liquid level variation, the moisture content and the viscosity variation of the engine oil are monitored in real time, so that the liquid level variation, the moisture content and the viscosity variation of the engine oil can be timely monitored when the dilution phenomenon of the fuel oil occurs, the prompt of the replacement of the engine oil is carried out, the engine oil can be conveniently and timely replaced, the dilution rate of the fuel oil can be calculated, whether the dilution phenomenon of the fuel oil occurs or not can be monitored, and the detection result is accurate.
Referring to fig. 4, a system for determining fuel dilution of diesel engine oil according to an embodiment of the present invention includes an oil level sensor, a moisture sensor, an engine oil viscosity sensor, and an output display device. The oil level sensor, the moisture sensor, and the engine oil viscosity sensor are located within an oil pan of the vehicle. The engine oil level sensor is an ultrasonic liquid level induction sensor.
The engine oil level sensor is used for monitoring the liquid level variation of the engine oil; the moisture sensor is used for monitoring the moisture content of the engine oil; the engine oil viscosity sensor is used for monitoring the viscosity variation of the engine oil; the output display equipment is used for outputting a result of diluting the water in the fuel oil and prompting to replace the engine oil when the liquid level variation of the engine oil is not less than the preset liquid level variation and the water content of the engine oil is abnormal according to the monitoring results of the engine oil level sensor, the water sensor and the engine oil viscosity sensor; when the liquid level variation of the engine oil is not less than the preset liquid level variation, the water content of the engine oil is normal, and the viscosity variation of the engine oil is less than the preset viscosity variation, prompting to replace the engine oil; and when the liquid level variation of the engine oil is not less than the preset liquid level variation, the water content of the engine oil is normal, and the viscosity variation of the engine oil is not less than the preset viscosity variation, calculating to obtain the fuel oil dilution rate and outputting, and simultaneously prompting to replace the engine oil.
In the embodiment of the invention, the oil level sensor, the moisture sensor and the engine oil viscosity sensor are positioned in an oil pan of the vehicle. Calculating to obtain the fuel oil dilution rate, which specifically comprises the following steps:
according to the viscosity variation quantity obtained by monitoring of the engine oil viscosity sensor, the fuel oil dilution rate is obtained by calculation, and the calculation formula is
R＝αΔv2+βΔv
Where R represents a fuel dilution ratio, Δ v represents a viscosity change amount, and α and β represent calculation coefficients.
According to the judging system for diesel engine oil fuel oil dilution provided by the embodiment of the invention, the liquid level variation, the moisture content and the viscosity variation of the engine oil are monitored in real time, so that the engine oil can be timely monitored when the fuel oil dilution phenomenon occurs, the prompt of engine oil replacement is carried out, the engine oil can be timely replaced conveniently, the fuel oil dilution rate can be calculated, and whether the water dilution phenomenon occurs to the fuel oil or not can be monitored.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (10)
1. A method for judging the fuel dilution of diesel engine oil is characterized by comprising the following steps:
acquiring the liquid level variation of the engine oil, and acquiring the moisture content of the engine oil when the liquid level variation is not less than the preset liquid level variation;
judging whether the moisture content of the engine oil is abnormal or not based on the acquired moisture content:
if yes, judging that the fuel oil is diluted by water;
and if not, acquiring the viscosity variation of the engine oil, and calculating the fuel oil dilution rate according to the acquired viscosity variation.
2. The method for determining dilution of diesel engine oil fuel according to claim 1, wherein the step of obtaining a liquid level variation of the engine oil and obtaining a moisture content of the engine oil when the liquid level variation is not less than a preset liquid level variation includes:
s101: acquiring the liquid level variation of the engine oil, and turning to S102;
s102: judging whether the liquid level variation is not less than a preset liquid level variation or not based on the acquired liquid level variation, if so, turning to S103, and if not, turning to S101;
s103: the moisture content of the engine oil is obtained.
3. The method for determining dilution of diesel engine oil fuel according to claim 1, further comprising, after it is determined that the fuel is diluted with water: prompt for engine oil replacement is made.
4. The method for determining the dilution of diesel engine oil with fuel according to claim 1, wherein the step of obtaining the viscosity variation of the engine oil and calculating the dilution ratio of fuel according to the obtained viscosity variation comprises the following steps:
s401: obtaining the viscosity variation of the engine oil, and turning to S402;
s402: judging whether the viscosity variation is not less than a preset viscosity variation or not based on the obtained viscosity variation, if so, turning to S403, and if not, turning to S404;
s403: calculating the fuel oil dilution rate according to the obtained viscosity variation and outputting the fuel oil dilution rate, and turning to S404;
s404: prompt for engine oil replacement is made.
5. The method for determining the dilution of diesel engine oil with fuel according to claim 4, wherein the fuel dilution ratio is calculated and outputted based on the acquired viscosity change amount, wherein the fuel dilution ratio is calculated by using the formula:
R＝αΔv2+βΔv
where R represents a fuel dilution ratio, Δ v represents a viscosity change amount, and α and β represent calculation coefficients.
6. The method for determining dilution of diesel engine oil fuel according to claim 5, characterized by: the preset viscosity change is related to the engine oil performance.
7. A method of determining dilution of diesel engine oil fuel according to claim 1, characterized by: the preset liquid level variation is related to the volume of an oil pan of the engine.
8. A system for determining dilution of diesel engine oil fuel, comprising:
an oil level sensor for monitoring a level change of the engine oil;
a moisture sensor for monitoring a moisture content of the engine oil;
an engine oil viscosity sensor for monitoring a change in viscosity of the engine oil;
the output display equipment is used for outputting a result of diluting the water content of the fuel oil and prompting to replace the engine oil when the liquid level variation of the engine oil is not less than the preset liquid level variation and the water content of the engine oil is abnormal according to the monitoring results of the oil level sensor, the water sensor and the engine oil viscosity sensor; when the liquid level variation of the engine oil is not less than the preset liquid level variation, the water content of the engine oil is normal, and the viscosity variation of the engine oil is less than the preset viscosity variation, prompting to replace the engine oil; and when the liquid level variation of the engine oil is not less than the preset liquid level variation, the water content of the engine oil is normal, and the viscosity variation of the engine oil is not less than the preset viscosity variation, calculating to obtain the fuel oil dilution rate and outputting, and simultaneously prompting to replace the engine oil.
9. A diesel engine oil fuel dilution determination system as set forth in claim 8, wherein: the oil level sensor, the moisture sensor and the engine oil viscosity sensor are located in an oil pan of the vehicle.
10. The system for determining the fuel dilution of diesel engine oil according to claim 8, wherein said calculation obtains a fuel dilution ratio, specifically:
according to the viscosity variation quantity obtained by monitoring of the engine oil viscosity sensor, the fuel oil dilution rate is obtained by calculation, and the calculation formula is
R＝αΔv2+βΔv
Where R represents a fuel dilution ratio, Δ v represents a viscosity change amount, and α and β represent calculation coefficients.
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| CN115370446A (en) * | 2022-08-24 | 2022-11-22 | 东风商用车有限公司 | Method, device, equipment and storage medium for judging engine oil replacement period of vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115370446B (en) * | 2022-08-24 | 2023-09-01 | 东风商用车有限公司 | Method, device, equipment and storage medium for judging vehicle engine oil replacement period |
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