CN113864048A - High-sulfur oil identification processing method and device, vehicle and computer readable storage medium - Google Patents
High-sulfur oil identification processing method and device, vehicle and computer readable storage medium Download PDFInfo
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- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 130
- 239000011593 sulfur Substances 0.000 title claims abstract description 130
- 238000003672 processing method Methods 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 244
- 230000008929 regeneration Effects 0.000 claims abstract description 79
- 238000011069 regeneration method Methods 0.000 claims abstract description 79
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims description 22
- 230000001960 triggered effect Effects 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 16
- 230000001172 regenerating effect Effects 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 239000010913 used oil Substances 0.000 abstract description 9
- 238000012805 post-processing Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 3
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1621—Catalyst conversion efficiency
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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
- Y02T10/12—Improving ICE efficiencies
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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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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a high-sulfur oil identification processing method, a high-sulfur oil identification processing device, a vehicle and a computer readable storage medium, and relates to the technical field of vehicle post-processing. This application discerns whether the used oil of vehicle is high sulfur oil through SCR conversion efficiency combination under the different temperatures, compares in current scheme, and is just regarded as the scheme of high sulfur oil when SCR efficiency is less than the limit value purely, and its judgement is more accurate. In addition, the mode does not need to additionally arrange a sulfur sensor or manually intervene, so that the identification method is more accurate. In addition, through the regeneration operation in the preset operation, the vehicle exhaust is treated while the oil is judged, and the environment protection is improved.
Description
Technical Field
The invention relates to the technical field of vehicle post-processing, in particular to a high-sulfur oil identification processing method, a high-sulfur oil identification processing device, a vehicle and a computer readable storage medium.
Background
In the sixth phase of the state, the emission standard of pollutants of motor vehicles (hereinafter referred to as "six") stipulates that diesel engines strictly require nitrogen and oxygen emission in order to meet the regulations, high-efficiency SCR technology (selective catalytic reduction of diesel engines, hereinafter referred to as "SCR") is adopted, but SCR is easily poisoned by sulfur. Therefore, the national six diesel engine has high requirements on fuel quality, and users need to use the national six diesel oil which meets the requirements. However, a lot of diesel which does not meet the requirements of the nation and the Hei exist in the market, once a user uses oil with poor quality, SCR poisoning, excessive emission and OBD (on-board diagnostics) alarming can be caused, and then torque limitation and speed limitation are carried out on the vehicle.
The control logic of the present engine has no function of identifying and processing the high sulfur oil used by the user, and the method for judging sulfur poisoning in the prior art has the following main problems:
1. judging whether SCR sulfur poisoning occurs or not by judging the SCR efficiency, judging that the SCR efficiency is high sulfur oil when the SCR efficiency is lower than a limit value, and solving the problem of easy misjudgment without causing low SCR efficiency under special conditions such as a specific temperature interval;
2. the method for comparing the sulfur content accumulated by consuming a certain amount of fuel with the preset fuel sulfur content is only suitable for the engine capable of determining the fuel consumption, and all working conditions are difficult to consider;
3. the method of directly measuring and calculating the sulfur content of the fuel by adopting the sulfur sensor increases the hardware cost;
4. the method for measuring the acidity of the tail gas by adopting the acid-base test paper needs manual intervention and cannot automatically identify the acidity by an electric control means.
Therefore, how to invent a method capable of accurately diagnosing and treating high-sulfur oil becomes a problem to be solved urgently at present.
Disclosure of Invention
In order to solve the problem that the prior art cannot accurately diagnose and process high-sulfur oil according to various special conditions well, the invention provides a high-sulfur oil identification processing method in a first aspect.
The second aspect of the invention also provides a high-sulfur oil identification processing device.
The third aspect of the invention also provides a vehicle.
The fourth aspect of the present invention also proposes a computer-readable storage medium.
In view of this, the first aspect of the present invention provides a high-sulfur oil identification processing method, which is applicable to a diesel engine vehicle, and specifically includes: monitoring the conversion efficiency of the SCR device in a high-temperature interval, and recording as a first conversion efficiency; monitoring the conversion efficiency of the SCR device in a low-temperature interval, and recording the conversion efficiency as a second conversion efficiency, wherein the high-temperature interval is higher than the low-temperature interval; when the second conversion efficiency is higher than the preset conversion efficiency, determining that the oil in the vehicle is non-high-sulfur oil; executing a preset operation when the first conversion efficiency is lower than a preset conversion efficiency; after the first conversion efficiency is higher than the preset conversion efficiency, if the second conversion efficiency is monitored to be lower than the preset conversion efficiency, executing preset operation; wherein the preset operation comprises: after the temperature in the SCR device is raised, the conversion efficiency of the SCR device is re-determined, and whether the oil in the vehicle is high-sulfur oil is judged based on the re-determined conversion efficiency.
The high-sulfur oil identification processing method provided by the invention is used for vehicles, and is mainly used for diesel vehicles. In the method, temperature intervals where SCR devices are located are firstly distinguished, SCR conversion efficiencies in different temperature interval ranges are monitored, specifically, a first conversion efficiency is the SCR conversion efficiency monitored in a high-temperature interval, and the first conversion efficiency comprises two conditions of high-temperature high-efficiency and high-temperature low-efficiency; the second conversion efficiency is the SCR conversion efficiency monitored in the low-temperature interval and comprises two conditions of low-temperature high efficiency and low-temperature low efficiency, so that different combinations of the low-temperature interval and the high-temperature interval and the SCR efficiency are increased, the four different conditions are divided, and further, through the steps of presetting operation (and whether refueling exists) and the like, more accurate diagnosis on whether the oil used by the vehicle is high-sulfur oil is realized. The preset operation mainly refers to raising the temperature and then monitoring the conversion efficiency of the SCR reaction, and the raising the temperature may specifically include performing thermal management and regeneration operation. According to the scheme, whether the oil used by the vehicle is the high-sulfur oil or not is judged and identified through the combination of the SCR conversion efficiencies at different temperatures, when the SCR conversion efficiency is determined to be high-temperature high-efficiency and low-temperature low-efficiency or the SCR conversion efficiency is determined to be high-temperature low-efficiency, heating operation such as thermal management or thermal regeneration is carried out, and whether the oil used by the vehicle is the high-sulfur oil or not is further identified based on the conversion efficiency after heating. In addition, the mode does not need to additionally arrange a sulfur sensor and does not need manual intervention, so that the identification method is more accurate.
In addition, the efficiency of judging SCR still directly has carried out the intensification management when low temperature inefficiency in this application to this conversion efficiency that has improved SCR has also realized the processing to vehicle exhaust, has reduced the sulphur content, has improved the protection to the environment.
When the conversion efficiency of the SCR device in different temperature zones is determined, the determination criteria may be the same or different. That is, the criterion for determining whether the conversion efficiency of the SCR device is high-efficiency or low-efficiency (the preset conversion efficiency) at low temperature may be the same as or different from the criterion for determining whether the conversion efficiency of the SCR device is high-efficiency or low-efficiency (the preset conversion efficiency) at high temperature. For example, in the present application, the step that the second conversion efficiency is higher than the preset conversion efficiency may specifically be to determine whether the second conversion efficiency is higher than the second preset conversion efficiency, and the step that the first conversion efficiency is lower than the preset conversion efficiency may specifically be to determine whether the second conversion efficiency is higher than the second preset conversion efficiency.
Further, the high temperature range is 300 to 350 ℃ and the low temperature range is 250 to 280 ℃, and of course, the high temperature range and the low temperature range can be expanded or reduced as required.
Further, when the second conversion efficiency is higher than the preset conversion efficiency, that is, when the conversion efficiency is low, the reaction temperature representing the SCR reaction can ensure high conversion efficiency even if the reaction temperature is low, and the sulfur content in the oil is low, so that the oil used by the vehicle can be directly judged to be non-high-sulfur oil.
Further, when the first conversion efficiency is lower than the preset conversion efficiency, that is, when the conversion efficiency is high, the conversion efficiency is not sufficient although the temperature of the SCR reaction is high, in this case, the high sulfur oil is not directly determined due to the low efficiency, but the high sulfur oil is further determined after the preset operation.
Further, after the first conversion efficiency is higher than the preset conversion efficiency, if the second conversion efficiency is monitored to be lower than the preset conversion efficiency, the situation that the oil is high in temperature and efficient in the first detection is also monitored, at the moment, the oil is not high-sulfur oil and is not directly judged to be high-sulfur oil due to high efficiency, but low in temperature and low in efficiency in the second detection after the temperature is reduced, and under the situation, the oil is judged after the preset operation is performed.
In addition, the high-sulfur oil identification processing method in the technical scheme provided by the invention can also have the following additional technical characteristics:
in the above technical solution, preferably, the increasing of the temperature in the SCR device includes a regeneration operation and/or a non-regeneration heating, and the temperature in the SCR device at the time of the non-regeneration heating is lower than the temperature in the SCR device at the time of the regeneration operation.
In this solution, in the preset operation, the temperature of the SCR device is raised, including triggering the regeneration operation and the non-regeneration operation (which may be thermal management), and when the non-regeneration is heated, the temperature in the SCR device is lower than the temperature in the SCR device during the regeneration operation. Generally, the regeneration operation temperature range is generally 500 ℃ to 600 ℃, the non-regeneration operation temperature range is generally 250 ℃ to 350 ℃, the non-regeneration operation temperature is higher than the low temperature range so as to play a role of heating the low temperature state, and the thermal regeneration operation temperature is higher than the high temperature range so as to recover the conversion efficiency through the regeneration mode.
In any of the above technical solutions, preferentially, when it is monitored that the first conversion efficiency is lower than the preset conversion efficiency, the preset operation specifically includes: triggering a regeneration operation and re-determining a conversion efficiency of the SCR device; and if the conversion efficiency of the SCR device is higher than the preset conversion efficiency after the regeneration operation is triggered, determining that the oil in the vehicle is non-high-sulfur oil.
In the technical scheme, for the case of high-temperature low efficiency, the preset operation is a regeneration operation, and then the conversion efficiency is monitored again, if the high-temperature low efficiency is changed into the high-temperature high efficiency after the regeneration operation is performed, which means that the conversion efficiency is influenced by the temperature, and the oil used by the vehicle is not high-sulfur oil because the sulfur content in the oil is too high.
In the above technical solution, if the conversion efficiency of the SCR device is lower than the preset conversion efficiency after the regeneration operation is triggered, it is determined that the SCR is deteriorated, specifically, the catalyst performance is deteriorated.
In this embodiment, if the efficiency is not changed after the regeneration operation or the high temperature is maintained at the low efficiency in the case of the high temperature low efficiency, it is said that the conversion efficiency is not affected by raising the temperature, and therefore, the conversion efficiency is considered to be low due to other causes, and it is generally considered to be caused by the deterioration of the SCR.
In any of the above technical solutions, preferentially, after monitoring that the first conversion efficiency is higher than the preset conversion efficiency, if monitoring that the second conversion efficiency is lower than the preset conversion efficiency, the preset operation specifically includes: non-regenerative heating of the SCR device and re-monitoring of the conversion efficiency of the SCR device; and if the conversion efficiency of the SCR device is higher than the preset conversion efficiency after the non-regenerative heating, judging that the oil in the vehicle is non-high-sulfur oil.
In the technical scheme, under the condition that the oil is high in temperature and high in efficiency during the first detection and low in temperature and low in efficiency during the second detection after the temperature is reduced, the condition that the oil is high in temperature and low in conversion efficiency is proved to be normal, so that the oil cannot be directly distinguished, non-regenerative heating operation (namely, thermal management) is carried out on the oil, the conversion efficiency of SCR reaction is monitored again, if the conversion efficiency is increased, the temperature influences the efficiency instead of the fact that the sulfur content in the oil is too high, and the oil can be judged to be non-high-sulfur oil.
In the technical scheme, if the conversion efficiency of the SCR device is lower than the preset conversion efficiency after non-regenerative heating, the regeneration operation is triggered, and then the conversion efficiency of the SCR device is monitored again; if the conversion efficiency of the SCR device is higher than the preset conversion efficiency after the regeneration operation is triggered, judging whether the vehicle has refueling operation within a first preset time period; and when the vehicle is refueled within a first preset time period, determining that the oil in the vehicle is high-sulfur oil.
In this embodiment, if the conversion efficiency is not increased after the non-regenerative heating (i.e., thermal management) is performed, it is indicated that the efficiency is not increased due to the increase in temperature, and therefore, it can be determined that other factors affect the efficiency in addition to the temperature. Therefore, once regeneration operation is performed, if the conversion efficiency is increased after the regeneration operation is triggered, the further increase of the temperature is indicated to improve the efficiency, and for the high-sulfur oil, when the temperature is within a certain range, the conversion efficiency is affected, the temperature increase cannot improve the efficiency, and after all, the influence of the high-sulfur oil on the temperature is limited, so that after the temperature is further increased, the conversion efficiency breaks through the influence of the high-sulfur oil, and the conversion efficiency is increased (namely, although the temperature is increased by thermal management, the efficiency is not improved, and after the regeneration operation at higher temperature is performed, the limitation of the high-sulfur oil on the temperature and the efficiency is broken through, so that the efficiency is improved). In this case, if it is checked that the vehicle has been refueled for the latest time, the oil used in the vehicle is determined to be high-sulfur oil.
In the technical scheme, if the conversion efficiency of the SCR device is lower than the preset conversion efficiency after the regeneration operation is triggered, marking the oil in the vehicle as to be identified; if the regeneration operation is triggered, the conversion efficiency of the SCR device is higher than the preset conversion efficiency, and when the vehicle is not refueled within a first preset time, oil in the vehicle is marked to be identified.
In the technical scheme, if the conversion efficiency is not improved after the regeneration operation is triggered, whether the used oil is high-sulfur oil or not (the regeneration operation at higher temperature can be carried out subsequently) cannot be judged under the condition, and the oil is marked as a state to be identified at the moment; or the vehicle is not refueled for the first few hours (no refuelling operation for the first preset duration), the oil is also marked as a to-be-identified state.
In the above technical solution, after the oil in the vehicle is marked to be recognized, the regeneration operation is triggered again.
In the technical scheme, after the regeneration operation is triggered, the conversion efficiency is not improved, the oil is marked as the oil in a state to be identified, and after a period of time, the regeneration operation with higher temperature is carried out again. The high sulfur oil can be further judged by combining other conditions. Through regeneration treatment, the deposited solid particles in the vehicle exhaust can be combusted, so that the solid particles are changed into carbon dioxide and then discharged, and the pollution to the environment is reduced.
In any of the above technical solutions, preferably, when it is detected that the oil level change in the oil tank of the vehicle is greater than the preset height within the second preset time period, it is determined that the vehicle has an oil filling operation.
In the technical scheme, if the oil level in the oil tank rises within a second preset time period, the vehicle is refueled. Whether the oil is added or not is judged, and whether the oil in the oil tank has sudden change or not is mainly judged.
In any of the above solutions, preferably, when the time of two adjacent regeneration operations is less than the third preset time, the temperature of the later triggered regeneration operation is higher than the temperature of the previous triggered regeneration operation.
In the technical scheme, if the time interval between the two times of triggering the regeneration operation is less than the third preset time length, the triggering interval between the two times of regeneration operation is relatively close, so that the conversion efficiency of the oil in the vehicle is relatively low, and therefore, the temperature can be increased during the next regeneration operation so as to improve the regeneration efficiency.
A second aspect of the present invention provides a high-sulfur oil identification processing apparatus, including: a processor; a memory having a computer program stored thereon; wherein the processor is configured to implement the steps of any of the above-mentioned methods when executing the computer program.
According to the high-sulfur oil identification processing device provided by the technical scheme of the invention, because the processor included in the device can realize the steps of any one of the above technical schemes, the high-sulfur oil identification processing device provided by the second aspect of the invention has all the technical effects of the high-sulfur oil identification processing method provided by any one of the first aspect, and details are not repeated herein.
A third aspect of the invention provides a vehicle including the high-sulfur oil identification processing device provided in any one of the second aspects of the invention.
According to the vehicle provided by the invention, since the vehicle includes the high-sulfur oil identification processing device provided by any one of the second aspects, the vehicle provided by the third aspect of the invention has all the technical effects of the high-sulfur oil identification processing device provided by any one of the second aspects, and details thereof are omitted here.
A fourth aspect of the invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the above-described solution methods.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart illustrating a different status determination process of a high sulfur oil identification processing method according to an embodiment of the present invention;
FIG. 2 illustrates a flow diagram of a method for high sulfur oil discrimination in high temperature inefficient situations in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart of a method for identifying high sulfur oil under high temperature and high efficiency conditions according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a high-sulfur oil identification processing device provided by an embodiment of the invention.
Wherein, the correspondence between the reference numbers and the names in fig. 4 is: high sulfur oil identification processing device 400, processor 402, memory 404.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The embodiment of the first aspect of the present invention provides a high sulfur oil identification processing method, which is applicable to a diesel engine vehicle, and specifically includes:
monitoring the conversion efficiency of the SCR device in a high-temperature interval, and recording as a first conversion efficiency;
monitoring the conversion efficiency of the SCR device in a low-temperature interval, and recording the conversion efficiency as a second conversion efficiency, wherein the high-temperature interval is higher than the low-temperature interval;
when the second conversion efficiency is higher than the preset conversion efficiency, determining that the oil in the vehicle is non-high-sulfur oil;
executing a preset operation when the first conversion efficiency is lower than a preset conversion efficiency;
after the first conversion efficiency is higher than the preset conversion efficiency, if the second conversion efficiency is monitored to be lower than the preset conversion efficiency, executing preset operation;
wherein the preset operation comprises: after the temperature in the SCR device is raised, the conversion efficiency of the SCR device is re-determined, and whether the oil in the vehicle is high-sulfur oil is judged based on the re-determined conversion efficiency.
The high-sulfur oil identification processing method provided by the invention is mainly used for diesel vehicles. In the method, temperature intervals where SCR devices are located are firstly distinguished, SCR conversion efficiencies in different temperature interval ranges are monitored, specifically, a first conversion efficiency is the SCR conversion efficiency monitored in a high-temperature interval, and the first conversion efficiency comprises two conditions of high-temperature high-efficiency and high-temperature low-efficiency; the second conversion efficiency is the SCR conversion efficiency monitored in the low-temperature interval and comprises two conditions of low-temperature high efficiency and low-temperature low efficiency, so that different combinations of the low-temperature interval and the high-temperature interval and the SCR efficiency are increased, the four different conditions are divided, and further, through the steps of presetting operation (and whether refueling exists) and the like, more accurate diagnosis on whether the oil used by the vehicle is high-sulfur oil is realized. The preset operation mainly refers to raising the temperature and then monitoring the conversion efficiency of the SCR reaction, and the raising the temperature may specifically include performing thermal management and regeneration operation. According to the scheme, whether the oil used by the vehicle is the high-sulfur oil or not is judged and identified through the combination of the SCR conversion efficiencies at different temperatures, when the SCR conversion efficiency is determined to be high-temperature high-efficiency and low-temperature low-efficiency or the SCR conversion efficiency is determined to be high-temperature low-efficiency, heating operation such as thermal management or thermal regeneration is carried out, and whether the oil used by the vehicle is the high-sulfur oil or not is further identified based on the conversion efficiency after heating. In addition, the mode does not need to additionally arrange a sulfur sensor and does not need manual intervention, so that the identification method is more accurate.
Fig. 1 shows a schematic flow diagram of a high sulfur oil identification processing method according to an embodiment of the present invention. Wherein, the method comprises the following steps:
s1011 determines whether the SCR device temperature is in the high temperature range, and if so, the process proceeds to S1031, and if not, the process proceeds to S1012.
S1012, determining whether the SCR temperature is in the low temperature range, if yes, proceeding to S1032, otherwise, proceeding to S102.
And S102, no sampling is carried out.
In the steps S1011 and S1012, the temperature at which the SCR device reacts is first divided into the high temperature range and the low temperature range, so that the conversion efficiency can be combined later to accurately determine whether the used oil is high sulfur oil.
And S1031, judging whether the conversion efficiency of the SCR reaction is high in the high-temperature range, if so, entering S1041, and if not, entering S1042.
And S1032, judging whether the conversion efficiency of the SCR reaction is high in the low-temperature range, if so, entering S1043, and otherwise, entering S1044.
And S1041, judging that the current SCR reaction state is high-temperature and high-efficiency.
S1042, judging that the current SCR reaction state is high temperature and low efficiency.
And S1043, judging that the current SCR reaction state is low-temperature and efficient.
And S1044, judging that the current SCR reaction state is low-temperature and low-efficiency.
By the steps S1031 to S1044, it is determined whether the conversion efficiency of the SCR reaction is high-efficiency or low-efficiency in different temperature ranges, and then four different conditions of high-temperature high-efficiency, high-temperature low-efficiency, low-temperature high-efficiency, and low-temperature low-efficiency are distinguished, so as to determine the accuracy of whether the used oil is high-sulfur oil.
And S1051, executing a preset operation.
In step S1051, that is, when the temperature is low, the conversion efficiency is not sufficient although the temperature of the SCR reaction is high, and in this case, the high-sulfur oil is not directly determined due to the low efficiency, but a predetermined operation is performed and then further determination is performed.
S1052, directly judging the used oil to be non-high sulfur oil.
In step S1052, that is, in the case of low temperature and high efficiency, if the reaction temperature representing the SCR reaction is low, high conversion efficiency can be ensured, and the sulfur content in the oil is low, it can be directly determined that the oil used in the vehicle is a non-high sulfur oil.
The high-sulfur oil identification processing method provided by the invention is used for vehicles, and is mainly used for diesel vehicles. In the method, temperature intervals where SCR devices are located are firstly distinguished, SCR conversion efficiencies in different temperature interval ranges are monitored, specifically, a first conversion efficiency is the SCR conversion efficiency monitored in a high-temperature interval, and the first conversion efficiency comprises two conditions of high-temperature high-efficiency and high-temperature low-efficiency; the second conversion efficiency is the SCR conversion efficiency monitored in the low-temperature interval and comprises two conditions of low-temperature high efficiency and low-temperature low efficiency, so that different combinations of the low-temperature interval and the high-temperature interval and the SCR efficiency are increased, the four different conditions are divided, and further, through the steps of presetting operation (and whether refueling exists) and the like, more accurate diagnosis on whether the oil used by the vehicle is high-sulfur oil is realized. The preset operation mainly refers to raising the temperature and then monitoring the conversion efficiency of the SCR reaction, and the raising the temperature may specifically include performing thermal management and regeneration operation. According to the scheme, whether the oil used by the vehicle is the high-sulfur oil or not is judged and identified through the combination of the SCR conversion efficiencies at different temperatures, when the SCR conversion efficiency is determined to be high-temperature high-efficiency and low-temperature low-efficiency or the SCR conversion efficiency is determined to be high-temperature low-efficiency, heating operation such as thermal management or thermal regeneration is carried out, and whether the oil used by the vehicle is the high-sulfur oil or not is further identified based on the conversion efficiency after heating. In addition, the mode does not need to additionally arrange a sulfur sensor and does not need manual intervention, so that the identification method is more accurate.
In addition, the efficiency of judging SCR still directly has carried out the intensification management when low temperature inefficiency in this application to this conversion efficiency that has improved SCR has also realized the processing to vehicle exhaust, has reduced the sulphur content, has improved the protection to the environment.
When the conversion efficiency of the SCR device in different temperature zones is determined, the determination criteria may be the same or different. That is, the criterion for determining whether the conversion efficiency of the SCR device is high-efficiency or low-efficiency (the preset conversion efficiency) at low temperature may be the same as or different from the criterion for determining whether the conversion efficiency of the SCR device is high-efficiency or low-efficiency (the preset conversion efficiency) at high temperature. For example, in the present application, the step that the second conversion efficiency is higher than the preset conversion efficiency may specifically be to determine whether the second conversion efficiency is higher than the second preset conversion efficiency, and the step that the first conversion efficiency is lower than the preset conversion efficiency may specifically be to determine whether the second conversion efficiency is higher than the second preset conversion efficiency.
Further, when the second conversion efficiency is higher than the preset conversion efficiency, that is, when the conversion efficiency is low, the reaction temperature representing the SCR reaction can ensure high conversion efficiency even if the reaction temperature is low, and the sulfur content in the oil is low, so that the oil used by the vehicle can be directly judged to be non-high-sulfur oil.
Further, when the first conversion efficiency is lower than the preset conversion efficiency, that is, when the conversion efficiency is high, the conversion efficiency is not sufficient although the temperature of the SCR reaction is high, in this case, the high sulfur oil is not directly determined due to the low efficiency, but the high sulfur oil is further determined after the preset operation.
Further, after the first conversion efficiency is higher than the preset conversion efficiency, if the second conversion efficiency is monitored to be lower than the preset conversion efficiency, the situation that the oil is high in temperature and efficient in the first detection is also monitored, at the moment, the oil is not high-sulfur oil and is not directly judged to be high-sulfur oil due to high efficiency, but low in temperature and low in efficiency in the second detection after the temperature is reduced, and under the situation, the oil is judged after the preset operation is performed.
In this embodiment, the predetermined operation is to increase the temperature of the SCR device, including triggering a regeneration operation and a non-regeneration operation (which may be thermal management), while the temperature in the SCR device is less than the temperature in the SCR device during the regeneration operation when the non-regeneration is heating. Generally, the temperature within the regeneration operation SCR unit is between 500 ℃ and 600 ℃.
In this embodiment, it is preferred that if the level of oil in the tank rises within the second predetermined period of time, it is indicative that the vehicle is being refueled. Whether the oil is added or not is judged, and whether the oil in the oil tank has sudden change or not is mainly judged.
FIG. 2 shows a flow diagram of a method for high sulfur oil discrimination in high temperature inefficient situations, according to an embodiment of the present invention. The method for judging the high-sulfur oil under the condition of high temperature and low efficiency specifically comprises the following steps:
s202, when the reaction state of the SCR device is high-temperature and low-efficiency, triggering regeneration operation;
s204, judging whether the reaction state of the SCR device is changed from high-temperature low efficiency to high-temperature high efficiency, if so, entering S2061, and if not, entering S2062;
s2061, judging the used oil to be non-high-sulfur oil;
s2062, SCR degradation is determined.
In this embodiment, for the case of low efficiency at high temperature, the preset operation is a regeneration operation, and then the conversion efficiency is monitored again, if the regeneration operation is performed, the high-temperature low efficiency condition is changed into high-temperature high efficiency, which means that the temperature affects the conversion efficiency, and not because the sulfur content in the oil is too high, the oil used by the vehicle can be determined to be non-high sulfur oil. However, in the case of the high-temperature inefficiency, if the efficiency is not changed after the regeneration operation or the high-temperature inefficiency is maintained, it is said that the conversion efficiency is not affected by the increase in temperature, and therefore, the conversion efficiency is considered to be low due to other reasons, and is generally considered to be caused by the deterioration of the SCR.
Fig. 3 is a flow chart showing a method for discriminating high-sulfur oil under high-temperature and high-efficiency conditions according to an embodiment of the present invention. The method for judging the high-sulfur oil under the high-temperature and high-efficiency condition specifically comprises the following steps:
s301, when the reaction state of the SCR device is high-temperature and high-efficiency, standing, and triggering heat management when the reaction state is changed into low-temperature and low-efficiency;
in S301, in the case that the first detection is high-temperature and high-efficiency, and the second detection is low-temperature and low-efficiency after the temperature is reduced, it is reasonable to say that the high-temperature conversion efficiency is high, and the low-temperature conversion efficiency is also low, so that the oil cannot be directly distinguished in this case, so that the oil is subjected to non-regenerative heating operation (i.e., thermal management), and the conversion efficiency of the SCR reaction is monitored again, and if the conversion efficiency is increased (as in S3031), the temperature affects the efficiency instead of the oil with too high sulfur content, so that the oil used can be judged to be non-high-sulfur oil.
S302, judging whether the reaction state of the SCR device is changed from low-temperature low-efficiency to low-temperature high-efficiency, if so, entering S3031, and if not, entering S3032.
S3031, judging the used oil to be non-high-sulfur oil.
S3032, triggering a regeneration operation.
S304, judging whether the reaction state of the SCR device is changed from low-temperature low-efficiency to low-temperature high-efficiency, and if yes, entering S3051, otherwise, entering S3052.
S3051, judging that the used oil is high-sulfur oil.
And S3052, if the judgment cannot be made, marking the used oil as the oil to be identified.
In steps S3032 to S3052, if the conversion efficiency does not increase after the non-regenerative heating (i.e., thermal management) is performed, it is indicated that the efficiency is not improved by the increase in temperature, and therefore, it can be determined that the efficiency is affected by other factors than the temperature. Therefore, once the regeneration operation is performed (for example, step S3032), if the conversion efficiency is increased after the regeneration operation is triggered, it is indicated that the further increase of the temperature improves the efficiency, and for the high-sulfur oil, when the temperature is within a certain range, the conversion efficiency is affected, the temperature increase does not improve the efficiency, and after all, the influence of the high-sulfur oil on the temperature is limited, so that after the temperature is further increased, the conversion efficiency breaks through the influence of the high-sulfur oil, and thus the conversion efficiency is increased (that is, although the temperature is increased by thermal management, the efficiency is not improved, and after the regeneration operation at a higher temperature is performed, the limitation of the high-sulfur oil on the temperature and the efficiency is broken through, so that the efficiency is improved). In this case, if it is checked that the vehicle has been refueled for the latest time, the oil used in the vehicle is determined to be high-sulfur oil.
In the above-described embodiment, if the conversion efficiency is not improved after the regeneration operation is triggered, in such a case, it is impossible to determine whether the oil used is a high-sulfur oil (a higher-temperature regeneration operation may be performed later), and at this time, the oil is marked as a state to be identified; or the vehicle is not refueled for the first few hours (no refuelling operation for the first preset duration), the oil is also marked as a to-be-identified state.
In the above embodiment, preferably, the oil marked as oil in the state to be identified is subjected to a higher temperature regeneration operation after a certain time interval, as long as the conversion efficiency is not improved after the regeneration operation is triggered. The high sulfur oil can be further judged by combining other conditions. Through regeneration treatment, the deposited solid particles in the vehicle exhaust can be combusted, so that the solid particles are changed into carbon dioxide and then discharged, and the pollution to the environment is reduced. If the time interval between the two times of regeneration triggering operations is less than the third preset time, the triggering interval between the two times of regeneration triggering operations is relatively close, so that the conversion efficiency of the oil in the vehicle is low, and therefore, the temperature can be increased during the later regeneration operation so as to improve the regeneration efficiency.
In an embodiment of the second aspect of the present invention, as shown in fig. 4, a high-sulfur oil identification processing apparatus 400 is provided, where the high-sulfur oil identification processing apparatus 400 specifically includes a processor 402 and a memory 404. The memory 404 is used for storing instructions executable by the processor 402; the processor 402 is configured to execute the executable instructions stored in the memory 404 to implement the steps of the method according to any of the above embodiments.
In the embodiment of the third aspect of the present invention, since the vehicle includes the high-sulfur oil identification processing device 400 provided in any one of the embodiments of the second aspect, the vehicle provided in the third aspect of the present invention has all the technical effects of the high-sulfur oil identification processing device 400 provided in any one of the embodiments of the second aspect, and details thereof are not repeated herein.
Embodiments of the fourth aspect of the present invention provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when being executed by a processor, implements the steps of any of the above-mentioned embodiments of the method, so as to achieve all the technical effects of the high-sulfur oil identification processing method, and will not be described herein again.
Computer readable storage media may include any medium that can store or transfer information. Examples of computer readable storage media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
In this specification, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A high-sulfur oil identification processing method is used for a vehicle, and comprises the following steps:
monitoring the conversion efficiency of the SCR device in a high-temperature interval, and recording as a first conversion efficiency;
monitoring the conversion efficiency of the SCR device in a low-temperature interval, and recording the conversion efficiency as a second conversion efficiency, wherein the high-temperature interval is higher than the low-temperature interval;
when the second conversion efficiency is higher than a preset conversion efficiency, determining that the oil in the vehicle is non-high-sulfur oil;
executing a preset operation when the first conversion efficiency is lower than a preset conversion efficiency;
after the first conversion efficiency is higher than the preset conversion efficiency, if the second conversion efficiency is monitored to be lower than the preset conversion efficiency, executing the preset operation;
wherein the preset operation comprises: after the temperature in the SCR device is increased, the conversion efficiency of the SCR device is redetermined, and whether the oil in the vehicle is high-sulfur oil is judged based on the redetermined conversion efficiency.
2. The high-sulfur oil identification processing method according to claim 1,
increasing the temperature within the SCR device includes regenerative operation and/or non-regenerative heating;
the temperature within the SCR device during the non-regenerative heating is less than the temperature within the SCR device during the regenerative operation.
3. The high-sulfur oil identification processing method according to claim 2, wherein when it is monitored that the first conversion efficiency is lower than a preset conversion efficiency, the preset operation is specifically:
triggering a regeneration operation and re-determining a conversion efficiency of the SCR device;
and if the conversion efficiency of the SCR device is higher than the preset conversion efficiency after the regeneration operation is triggered, determining that the oil in the vehicle is non-high-sulfur oil.
4. The high-sulfur oil identification processing method according to claim 3,
and if the conversion efficiency of the SCR device is lower than a preset conversion efficiency after the regeneration operation is triggered, judging that the SCR device is degraded.
5. The method for identifying and processing high-sulfur oil according to claim 1 or 2, wherein after monitoring that the first conversion efficiency is higher than a preset conversion efficiency, if monitoring that the second conversion efficiency is lower than the preset conversion efficiency, the preset operation specifically comprises:
non-regeneratively heating the SCR device and re-monitoring the conversion efficiency of the SCR device;
and if the conversion efficiency of the SCR device is higher than the preset conversion efficiency after the non-regenerative heating, determining that the oil in the vehicle is non-high-sulfur oil.
6. The high-sulfur oil identification processing method according to claim 5,
if the conversion efficiency of the SCR device is lower than the preset conversion efficiency after the non-regenerative heating, triggering the regeneration operation, and then monitoring the conversion efficiency of the SCR device again;
if the conversion efficiency of the SCR device is higher than the preset conversion efficiency after the regeneration operation is triggered, judging whether the vehicle has refueling operation within a first preset time;
and when the vehicle is subjected to refueling operation within the first preset time, determining that the oil in the vehicle is high-sulfur oil.
7. The high-sulfur oil identification processing method according to claim 6,
if the conversion efficiency of the SCR device is lower than the preset conversion efficiency after the regeneration operation is triggered, marking the oil in the vehicle as to be identified;
and if the regeneration operation is triggered, the conversion efficiency of the SCR device is higher than a preset conversion efficiency, and when the vehicle is not subjected to refueling operation within the first preset time, oil in the vehicle is marked to be identified.
8. The high-sulfur oil identification processing method according to claim 7,
after marking the oil in the vehicle as to be identified, the regeneration operation is again triggered.
9. The high-sulfur oil identification processing method according to claim 1, further comprising:
when the change of the oil level in the oil tank of the vehicle is detected to be larger than the preset height within a second preset time, determining that the vehicle has refueling operation; and/or
When the time of the two adjacent regeneration operations is less than a third preset time, the temperature for triggering the regeneration operation at the next time is higher than the temperature for triggering the regeneration operation at the previous time.
10. A high-sulfur oil identification processing device, comprising:
a memory having a computer program stored thereon;
a processor configured to carry out the steps of the high sulfur oil identification processing method of any one of claims 1 to 9 when executing the computer program.
11. A vehicle characterized by comprising the high-sulfur oil identification processing device according to claim 10.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the high sulfur oil identification processing method according to any one of claims 1 to 9.
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