CN115422491A - PN detection processing method and device and electronic equipment - Google Patents
PN detection processing method and device and electronic equipment Download PDFInfo
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Abstract
The application discloses a PN detection processing method and device and electronic equipment, wherein the method comprises the following steps: determining a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after DPF treatment; determining a decision parameter based on the first content value and the second content value; if the judgment parameter meets the first preset condition, connecting the exhaust gas of the oil-gas separator into an air inlet pipeline to perform DPF treatment on the exhaust gas at the outlet of the oil-gas separator; and if the judgment parameter does not meet the first preset condition, exhausting the exhaust gas of the oil-gas separator. And a corresponding PN processing mode is selected according to the real-time PN content, so that the PN processing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of tail gas treatment, in particular to a PN detection treatment method and device and electronic equipment.
Background
At present, six national regulations increase monitoring on PN (particle number), and the PN of an engine is required to meet the requirements of the regulations. PN is the total number of particles with a particle size of more than 23nm after volatile substances are removed in the exhaust gas. At present, PN generated by an engine is discharged from two paths, one path is discharged from an engine exhaust pipe, the path is processed by a DPF (Diesel Particulate Filter) and discharged to the atmosphere, the second path is processed by an oil-gas separator on the engine, the discharged gas also contains PN, and an Electronic Control Unit (ECU) at present lacks a processing mechanism for the PN.
Disclosure of Invention
The application aims to provide a PN detection processing method and device and electronic equipment. The method is used for selecting the corresponding PN processing mode according to the real-time PN content, and the PN processing efficiency is improved.
In a first aspect, an embodiment of the present application provides a method for detecting and processing a PN, where the method includes:
determining a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after the treatment of the DPF;
determining a decision parameter based on the first and second content values;
if the judgment parameter meets a first preset condition, connecting the exhaust gas of the oil-gas separator into an air inlet pipeline to perform DPF treatment on the exhaust gas at the outlet of the oil-gas separator;
and if the judgment parameter does not meet the first preset condition, exhausting the gas of the oil-gas separator.
The judgment parameters are determined through the first content value and the second content value, when the judgment parameters do not meet the first preset condition, the oil-gas separator can directly discharge atmosphere, and pollution of waste gas to the supercharger and the air inlet pipeline is reduced; when the judgment parameter meets the first preset condition, the leaked gas of the oil-gas separator needs to enter the engine again from the gas inlet pipeline for DPF treatment, so that the problem that the PN content value does not meet the regulation is solved, the PN treatment efficiency is improved, and an adaptive PN treatment mode can be selected according to the real-time PN content value.
In some possible embodiments, an uncorrected content value of PN in the gas-oil separator outlet exhaust is determined based on the current engine speed and the amount of engine oil;
determining a first correction coefficient corresponding to the uncorrected content value according to a preset corresponding relation between the PN content value of the oil-gas separator and the correction coefficient;
and correcting the uncorrected content value according to the first correction coefficient to obtain the first content value.
In some possible embodiments, an original engine PN value before DPF processing is determined based on the current engine speed and engine oil amount;
determining a basic conversion efficiency value corresponding to the current DPF temperature according to the corresponding relation between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN;
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the original machine PN value and the basic conversion efficiency value.
In some possible embodiments, a second correction coefficient corresponding to the current original machine PN value is determined according to the preset corresponding relation between the original machine PN value and the correction coefficient;
correcting the original machine PN value according to the second correction coefficient to obtain a corrected original machine PN value;
determining a second value for the PN content of the exhaust after DPF treatment, comprising:
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the corrected original machine PN value and the PN basic conversion efficiency.
In some possible embodiments, determining a third correction coefficient corresponding to the current carbon loading of the DPF according to a preset corresponding relationship between the carbon loading of the DPF and the carbon loading correction coefficient;
determining a fourth correction coefficient corresponding to the current vehicle speed according to a preset corresponding relation between the vehicle speed and the vehicle speed correction coefficient;
determining a fifth correction coefficient corresponding to the current DPF aging time according to the preset corresponding relation between the DPF aging time and the aging time correction coefficient;
determining a PN conversion efficiency value according to the PN basic conversion efficiency value, the third correction coefficient, the fourth correction coefficient and the fifth correction coefficient;
determining a second value for the PN content of the exhaust after DPF treatment, comprising:
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the corrected original machine PN value and the PN conversion efficiency value.
In some possible embodiments, whether the determination parameter satisfies the first preset condition is determined by:
when the judgment parameter is larger than a preset threshold value, determining that the first preset condition is met; and when the judgment parameter is not larger than the preset threshold value, determining that the first preset condition is not met.
In a second aspect, an embodiment of the present application provides a PN detection processing apparatus, where the apparatus includes:
the system comprises a determination value module, a control module and a control module, wherein the determination value module is used for determining a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after DPF treatment;
a decision parameter determining module for determining a decision parameter based on the first and second content values;
the first processing module is used for connecting the exhaust gas of the oil-gas separator into an air inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator if the judgment parameter meets a first preset condition;
and the second processing module is used for discharging the exhaust gas of the oil-gas separator if the judgment parameter does not meet the first preset condition.
In a third aspect, an embodiment of the present application provides an electronic device, including at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of PN detection processing as provided in the first aspect above.
In some possible embodiments, the electronic device further comprises: the method comprises the following steps that a first switch is arranged on a first air outlet pipeline leading the oil-gas separator to the atmosphere, a second switch is arranged on a second air outlet pipeline leading the oil-gas separator to an air inlet pipeline in front of the supercharger, and the processor is specifically used for executing the following steps:
when the vehicle starts to run, if the judgment parameter does not meet a first preset condition, the first switch is turned on, and the second switch is turned off so as to discharge the exhaust gas of the oil-gas separator;
and if the judgment parameter meets a first preset condition, closing the first switch, and opening the second switch so as to connect the exhaust gas of the oil-gas separator into the air inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator.
In a fourth aspect, an embodiment of the present application provides a computer storage medium storing a computer program for causing a computer to execute the method for training a temperature prediction model provided in the first aspect.
The application determines an uncorrected PN value (including an uncorrected content value of PN in the exhaust gas at the outlet of the oil-gas separator and an original PN value before DPF treatment) through the engine speed and the engine oil quantity. The PN conversion efficiency is determined by DPF temperature, DPF carbon loading, vehicle speed and DPF aging time. When the judgment parameter does not exceed the preset threshold value, the oil-gas separator can directly discharge the atmosphere, so that the pollution of waste gas to the supercharger and the air inlet pipeline is reduced; when the judgment parameter exceeds the preset threshold value, the gas leakage of the oil-gas separator needs to enter the engine again from the gas inlet pipeline for DPF treatment, so that the problem that the PN content value does not meet the regulation is solved, and the treatment efficiency of the PN content is integrally improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below 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 schematic circuit diagram of a PN detection processing apparatus according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a PN detection processing method according to an embodiment of the present application;
fig. 3 is a schematic diagram illustrating a specific flow of a PN detection processing method according to an embodiment of the present application, when the determination parameter is a tail PN value;
fig. 4 is a detailed flowchart of a PN detection processing method according to an embodiment of the present application when the determination parameter is a specific emission value;
fig. 5 is a schematic structural diagram of a PN detection processing apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described in detail and clearly with reference to the accompanying drawings. In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; the "and/or" in the text is only an association relation describing the association object, and indicates that three relations may exist, for example, a and/or B may indicate: three cases of a alone, a and B both, and B alone exist, and in addition, "a plurality" means two or more than two in the description of the embodiments of the present application.
In the description of the embodiments of the present application, the term "plurality" means two or more unless otherwise specified, and other terms and the like should be understood similarly, and the preferred embodiments described herein are only for the purpose of illustrating and explaining the present application, and are not intended to limit the present application, and features in the embodiments and examples of the present application may be combined with each other without conflict.
To further illustrate the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide method steps as shown in the following embodiments or figures, more or fewer steps may be included in the method based on conventional or non-inventive efforts. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application. The method can be executed in the order of the embodiments or the method shown in the drawings or in parallel in the actual process or the control device.
In view of the lack of adequate handling of PN in the related art. The application provides a PN detection processing method and device and electronic equipment, which can improve the PN processing efficiency and select an adaptive PN processing mode according to a real-time PN content value.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The following describes a PN detection processing method in the embodiment of the present application in detail with reference to the drawings.
Fig. 1 is a schematic structural diagram of a PN detection processing apparatus according to an embodiment of the present application.
As shown in fig. 1, a pipeline in front of the Air filter element at the upper left of fig. 1 is an Air inlet pipe of the atmosphere, intake Air passes through the Air filter element for preliminary filtering, passes through a MAF (Mass Air Flow), then passes through a trapezoidal supercharger connected up and down, an Air inlet end at the left side of the supercharger connected with the MAF, namely a pressure end, the pressure of the Air passing through the supercharger becomes higher, and then the Air entering the engine becomes more, and the power of the engine rises along with the pressure; then, the Air passes through a CAC (Charge Air Cooler), and the temperature is increased due to the fact that the Air is compressed by a supercharger, so that the Air is cooled by Air cooling or water cooling through the CAC; then, air is held back through an air inlet throttle valve, so that the air inlet quantity is reduced, and the temperature in the engine is increased; after gas enters an engine through an air inlet throttle valve, the gas is subjected to aftertreatment through an exhaust pipe and a supercharger, the aftertreatment comprises a DPF (Diesel Particulate Filter), a DOC (Diesel Oxidation Catalyst), and an SCR (Selective Catalytic Reduction), and a sensor 1 in the figure is used for measuring the temperature at the upstream of the DPF.
The engine comprises an oil-gas separator, a supercharger, an oil-gas separator, a first switch, a second switch and a third switch, wherein the first switch is arranged on a first air outlet pipeline of the oil-gas separator, which is communicated with the atmosphere, and the second switch is arranged on a second air outlet pipeline of an air inlet pipeline of the oil-gas separator, which is communicated with the supercharger. Different PN processing modes can be selected according to the actual PN content conditions by controlling the opening and closing of the first switch and the second switch.
Fig. 2 is a schematic flow chart illustrating a PN detection processing method according to an embodiment of the present application, including:
step 201: and determining a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after the DPF treatment.
Although most of the internal gas of the engine enters a post-treatment stage through the exhaust pipe and is exhausted after being treated by the DPF, the first content value of PN in the gas leaked from a small part of the oil-gas separator has great influence on the final detection treatment result of the PN detection treatment, so that the first content value of PN in the exhaust gas at the outlet of the oil-gas separator and the second content value of PN in the exhaust gas after being treated by the DPF need to be determined simultaneously.
As an alternative to the first content value of PN, the first content value of PN may be determined by:
determining the uncorrected content value of PN in the exhaust gas at the outlet of the oil-gas separator according to the current engine speed and the engine oil amount;
determining a first correction coefficient corresponding to the uncorrected content value according to a preset corresponding relation between the PN content value of the oil-gas separator and the correction coefficient;
and correcting the uncorrected content value according to the first correction coefficient to obtain the first content value.
Specifically, the main execution body in the present application is an ECU (Electronic Control Unit), a first table of PN content values in the exhaust gas at the outlet of the gas-oil separator corresponding to the engine speed and the engine oil amount is preset, after the ECU monitors the current engine speed and the current engine oil amount in real time, the corresponding PN content value in the exhaust gas at the outlet of the gas-oil separator is determined by looking up the first table, and since the PN content value at this time is not corrected, the PN content value at this time is named as an uncorrected PN content value in the present application.
The correspondence relationship between the PN content value of the gas-oil separator and the correction coefficient is preset, but not limited to, based on the correction of the engine operating time, when the vehicle operating time is too long, the engine performance changes, and at this time, the gas amount leaking in the gas-oil separator increases, and the first PN content value in the leaked gas amount also increases, and according to this phenomenon, the correspondence relationship between the PN content value of the gas-oil separator and the correction coefficient, for example, the correction coefficient 1 for one hour of vehicle operation, the correction coefficient 2 for ten hours of vehicle operation, and the like, can be preset.
As an alternative embodiment, the ECU monitors the vehicle running time in real time, and determines the first correction factor corresponding to the uncorrected content value of the current oil-gas separator according to the current vehicle running time.
The uncorrected content value is corrected by the first correction coefficient, but not limited to, the first content value is obtained by multiplying the uncorrected content value by the first correction coefficient.
As an alternative to the second content value of PN, the second content value of PN may be determined by:
determining an original engine PN value before DPF processing according to the current engine rotating speed and the engine oil amount;
determining a basic conversion efficiency value corresponding to the current DPF temperature according to the corresponding relation between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN;
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the original machine PN value and the basic conversion efficiency value.
Presetting the corresponding relation between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN, wherein different DPF temperatures correspond to different basic conversion efficiencies, and determining the corresponding basic conversion efficiency value according to the current DPF temperature monitored in real time.
Specifically, a second table of the original machine PN value before DPF processing corresponding to the engine speed and the engine oil amount is preset, and after the ECU monitors the current engine speed and the current engine oil amount in real time, the corresponding original machine PN value before DPF processing is determined by looking up the second table, and the original machine PN value at this time is also not corrected.
As an optional implementation manner, determining a second correction coefficient corresponding to the current original machine PN value according to a preset corresponding relationship between the original machine PN value and the correction coefficient;
and correcting the original machine PN value according to the second correction coefficient to obtain a corrected original machine PN value.
The corresponding relationship between the original PN value and the correction coefficient is preset, but not limited to, based on the correction of the engine running time, when the vehicle running time is too long, the engine performance changes, and at this time, the gas volume entering the post-treatment stage through the exhaust pipe becomes larger, and the second content value of PN in the exhaust gas after the DPF treatment also becomes larger, and according to this phenomenon, the corresponding relationship between the original PN value and the correction coefficient, for example, a correction coefficient 3 corresponding to one hour of vehicle running, a correction coefficient 4 corresponding to ten hours of vehicle running, and the like, can be preset.
As an optional implementation manner, the ECU monitors the vehicle running time in real time, and determines a second correction coefficient corresponding to the current original PN value according to the current vehicle running time.
The original PN value is corrected by the second correction coefficient, but the corrected original PN value can be obtained by multiplying the original PN value by the second correction coefficient.
In the application, the basic conversion efficiency of the DPF on the original PN can be calibrated according to the temperature of the DPF, and the correction based on the carbon loading amount of the DPF, the vehicle speed and the aging time of the DPF is carried out.
As an alternative embodiment:
determining a third correction coefficient corresponding to the current carbon loading capacity of the DPF according to a preset corresponding relation between the carbon loading capacity of the DPF and the carbon loading capacity correction coefficient;
determining a fourth correction coefficient corresponding to the current vehicle speed according to a preset corresponding relation between the vehicle speed and the vehicle speed correction coefficient;
determining a fifth correction coefficient corresponding to the current DPF aging time according to the preset corresponding relation between the DPF aging time and the aging time correction coefficient;
and determining the PN conversion efficiency value according to the PN basic conversion efficiency value, the third correction coefficient, the fourth correction coefficient and the fifth correction coefficient.
Specifically, after the current DPF carbon loading amount is determined, the third correction coefficient is the carbon loading amount correction coefficient corresponding to the current DPF carbon loading amount determined by inquiring the carbon loading amount correction coefficient corresponding to the preset DPF carbon loading amount; the carbon loading correction coefficient corresponding to the current DPF carbon loading is named as a third correction coefficient, and the third correction coefficient is used as one of correction coefficients for correcting the PN basic conversion efficiency value.
After the current vehicle speed is determined, the fourth correction coefficient is the vehicle speed correction coefficient corresponding to the current vehicle speed by inquiring the vehicle speed correction coefficient corresponding to the preset vehicle speed; the vehicle speed correction coefficient corresponding to the current vehicle speed is named as a fourth correction coefficient, and the fourth correction coefficient is used as one of correction coefficients for correcting the PN basic conversion efficiency value.
The fifth correction coefficient is an aging time correction coefficient corresponding to the current DPF aging time determined by inquiring an aging time correction coefficient corresponding to the preset DPF aging time; the aging time correction coefficient corresponding to the current DPF aging time is named as a fifth correction coefficient, and the fifth correction coefficient is used as one of correction coefficients for correcting the PN basic conversion efficiency value.
The method comprises the steps of presetting the corresponding relations of the carbon loading capacity of the DPF and a carbon loading capacity correction coefficient, the vehicle speed and vehicle speed correction coefficient and the DPF aging time and aging time correction coefficient, monitoring the current carbon loading capacity of the DPF, the vehicle speed and the DPF aging time in real time when a vehicle runs, and determining a third correction coefficient, a fourth correction coefficient and a fifth correction coefficient.
As an alternative, the PN conversion efficiency value is determined by multiplying the PN base conversion efficiency value by the third correction factor, the fourth correction factor, and the fifth correction factor.
As an optional implementation mode, a second content value of PN in the exhaust after DPF treatment is determined according to the corrected original machine PN value and the PN conversion efficiency value.
Specifically, the second content value = corrected original PN value — corrected original PN value × PN conversion efficiency value.
Specifically, the present application determines a selected PN processing method based on a determination result by performing conditional determination on a determination parameter. The decision parameters in this application may be, but are not limited to, tail PN values, specific emissions values.
The tail row PN value is the sum of the first content value and the second content value;
the specific emission value is the tail bank PN value divided by the engine power value; the power is typically (speed torque/9550).
And 203, if the judgment parameter meets a first preset condition, connecting the exhaust gas of the oil-gas separator into an air inlet pipeline to perform DPF treatment on the exhaust gas at the outlet of the oil-gas separator.
And 204, if the judgment parameter does not meet the first preset condition, exhausting the gas of the oil-gas separator.
Specifically, referring to fig. 1, when the vehicle starts to operate, if the determination parameter does not satisfy the first preset condition, the first switch is turned on, and the second switch is turned off to discharge the exhaust gas of the gas-oil separator;
and if the judgment parameter meets a first preset condition, closing the first switch, and opening the second switch so as to connect the exhaust gas of the oil-gas separator into the air inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator.
As an alternative embodiment, whether the determination parameter satisfies the first preset condition is determined by: when the judgment parameter is larger than a preset threshold value, determining that the first preset condition is met; and when the judgment parameter is not larger than the preset threshold value, determining that the first preset condition is not met.
Specifically, when the determination parameter is a tail row PN value, if the tail row PN value is greater than a first preset threshold, it is determined that the first preset condition is satisfied; if the tail row PN value is not larger than a first preset threshold value, determining that the first preset condition is not met;
when the judgment parameter is a specific emission value, if the specific emission value is greater than a second preset threshold value, determining that the first preset condition is met; and if the specific emission value is not greater than a second preset threshold value, determining that the first preset condition is not met.
The first preset threshold value is a preset limit value of tail row PN, and if the tail row PN value is larger than the first preset threshold value, the exhaust gas of the oil-gas separator is connected to the gas inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator; and if the tail discharge PN value is not greater than a first preset threshold value, discharging the exhaust gas of the oil-gas separator.
The second preset threshold is a preset limit value of specific emission, and if the specific emission value is greater than the second preset threshold, the exhaust gas of the oil-gas separator is connected into the air inlet pipeline to perform DPF treatment on the exhaust gas at the outlet of the oil-gas separator; and if the specific discharge value is not greater than a second preset threshold value, discharging the exhaust gas of the oil-gas separator.
The application determines an uncorrected PN value (including an uncorrected content value of PN in the exhaust gas at the outlet of the oil-gas separator and an original PN value before DPF treatment) through the engine speed and the engine oil quantity. The PN conversion efficiency is determined by DPF temperature, DPF carbon loading, vehicle speed and DPF aging time. When the judgment parameter does not exceed the preset threshold value, the oil-gas separator can directly discharge the atmosphere, so that the pollution of waste gas to the supercharger and the air inlet pipeline is reduced; when the judgment parameter exceeds the preset threshold value, the gas leakage of the oil-gas separator needs to enter the engine again from the gas inlet pipeline for DPF treatment, and the problem that the PN content value does not meet the regulation is solved.
Referring to fig. 3, a specific flow diagram of a PN detection processing method is shown, when the determination parameter is the tail PN value:
step 3004, determining the original PN value before DPF processing according to the current engine speed and engine oil amount;
step 3005, determining a second correction coefficient corresponding to the current original machine PN value according to a preset corresponding relationship between the original machine PN value and the correction coefficient;
step 3007, determining a basic conversion efficiency value corresponding to the current DPF temperature according to the corresponding relationship between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN;
step 3008, determining a third correction coefficient corresponding to the current DPF carbon loading amount according to a preset correspondence between the DPF carbon loading amount and the carbon loading amount correction coefficient;
step 3009, determining a fourth correction coefficient corresponding to the current vehicle speed according to the preset corresponding relationship between the vehicle speed and the vehicle speed correction coefficient;
step 3011, determining a PN conversion efficiency value according to the PN basic conversion efficiency value, the third correction coefficient, the fourth correction coefficient, and the fifth correction coefficient;
3013, determining whether the tail row PN value is greater than a first preset threshold, if so, performing 3014, and if not, performing 3015;
3014, connecting the exhaust of the oil-gas separator to an air inlet pipeline to perform DPF treatment on the exhaust at the outlet of the oil-gas separator;
and step 3015, discharging the exhaust gas of the oil-gas separator.
Referring to fig. 4, a specific flow diagram of a PN detection processing method is shown, when the determination parameter is a specific emission value:
step 4004, determining an original engine PN value before DPF processing according to the current engine speed and the engine oil amount;
step 4005, determining a second correction coefficient corresponding to the current original machine PN value according to a preset corresponding relation between the original machine PN value and the correction coefficient;
step 4006, correcting the original machine PN value according to the second correction coefficient to obtain a corrected original machine PN value;
step 4007, determining a basic conversion efficiency value corresponding to the current DPF temperature according to the corresponding relation between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN;
step 4008, determining a third correction coefficient corresponding to the current DPF carbon loading amount according to a preset corresponding relationship between the DPF carbon loading amount and the carbon loading amount correction coefficient;
step 4009, determining a fourth correction coefficient corresponding to the current vehicle speed according to a preset corresponding relationship between the vehicle speed and the vehicle speed correction coefficient;
and step 4015, discharging the exhaust gas of the oil-gas separator.
Example 2
Based on the same inventive concept, the present application further provides a temperature prediction model training device, as shown in fig. 5, the device includes:
a content value determining module 501, configured to determine a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after DPF treatment;
a determine decision parameter module 502 for determining a decision parameter based on the first and second content values;
the first processing module 503 is configured to access the exhaust gas of the oil-gas separator to an air inlet pipeline to perform DPF processing on the exhaust gas at the outlet of the oil-gas separator if the determination parameter meets a first preset condition;
and a second processing module 504, configured to discharge the exhaust gas of the oil-gas separator if the determination parameter does not satisfy the first preset condition.
Optionally, the content determining module 501 is specifically configured to:
determining the uncorrected content value of PN in the exhaust gas at the outlet of the oil-gas separator according to the current engine speed and the engine oil amount;
determining a first correction coefficient corresponding to the uncorrected content value according to a preset corresponding relation between the PN content value of the oil-gas separator and the correction coefficient;
and correcting the uncorrected content value according to the first correction coefficient to obtain the first content value.
Optionally, the content determining module 501 is specifically configured to:
determining an original engine PN value before DPF processing according to the current engine speed and the engine oil amount;
determining a basic conversion efficiency value corresponding to the current DPF temperature according to the corresponding relation between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN;
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the original machine PN value and the basic conversion efficiency value.
Optionally, the determine content value module 501 is further configured to:
determining a second correction coefficient corresponding to the current original machine PN value according to the preset corresponding relation between the original machine PN value and the correction coefficient;
correcting the original machine PN value according to the second correction coefficient to obtain a corrected original machine PN value;
determining a second value for the PN content of the exhaust after DPF treatment, comprising:
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the corrected original machine PN value and the PN basic conversion efficiency.
Optionally, the determine content value module 501 is further configured to: determining a third correction coefficient corresponding to the current carbon loading capacity of the DPF according to a preset corresponding relation between the carbon loading capacity of the DPF and the carbon loading capacity correction coefficient;
determining a fourth correction coefficient corresponding to the current vehicle speed according to a preset corresponding relation between the vehicle speed and the vehicle speed correction coefficient;
determining a fifth correction coefficient corresponding to the current DPF aging time according to the preset corresponding relation between the DPF aging time and the aging time correction coefficient;
determining a PN conversion efficiency value according to the PN basic conversion efficiency value, the third correction coefficient, the fourth correction coefficient and the fifth correction coefficient;
determining a second value for the PN content of the exhaust after DPF treatment, comprising:
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the corrected original machine PN value and the PN conversion efficiency value.
Optionally, the first processing module 503 is specifically configured to determine whether the determination parameter meets a first preset condition by:
when the judgment parameter is larger than a preset threshold value, determining that the first preset condition is met; and when the judgment parameter is not larger than the preset threshold value, determining that the first preset condition is not met.
Having described the PN detection processing method and apparatus according to the exemplary embodiments of the present application, an electronic device according to another exemplary embodiment of the present application will be described next.
As will be appreciated by one skilled in the art, aspects of the present application may be embodied as a system, method or program product. Accordingly, various aspects of the present application may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
In some possible implementations, an electronic device according to the present application may include at least one processor, and at least one memory. The memory stores therein program code, which, when executed by the processor, causes the processor to perform the steps of the PN detection processing method according to various exemplary embodiments of the present application described above in the present specification.
In some possible embodiments, the electronic device further comprises: the method comprises the following steps that a first switch is arranged on a first air outlet pipeline leading the oil-gas separator to the atmosphere, a second switch is arranged on a second air outlet pipeline leading the oil-gas separator to an air inlet pipeline in front of the supercharger, and the processor is specifically used for executing the following steps:
when the vehicle starts to run, if the judgment parameter does not meet a first preset condition, the first switch is turned on, and the second switch is turned off so as to discharge the exhaust gas of the oil-gas separator;
if the judgment parameter meets a first preset condition, closing the first switch, and opening the second switch so as to connect the exhaust gas of the oil-gas separator into the air inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator
The electronic device 130 according to this embodiment of the present application, that is, the above-described PN detection processing device, is described below with reference to fig. 6. The electronic device 130 shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 6, the electronic device 130 is represented in the form of a general electronic device. The components of the electronic device 130 may include, but are not limited to: the at least one processor 131, the at least one memory 132, and a bus 133 that connects the various system components (including the memory 132 and the processor 131).
Bus 133 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.
The memory 132 may include readable media in the form of volatile memory, such as Random Access Memory (RAM) 1321 and/or cache memory 1322, and may further include Read Only Memory (ROM) 1323.
The electronic device 130 may also communicate with one or more external devices 134 (e.g., keyboard, pointing device, etc.), with one or more devices that enable a user to interact with the electronic device 130, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 130 to communicate with one or more other electronic devices. Such communication may occur via input/output (I/O) interfaces 135. Also, the electronic device 130 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 136. As shown, the network adapter 136 communicates with other modules for the electronic device 130 over the bus 133. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
In some possible embodiments, various aspects of a PN detection processing method provided by the present application may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of a PN detection processing method according to various exemplary embodiments of the present application described above in this specification when the program product is run on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product for monitoring of the embodiments of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on an electronic device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the consumer electronic device, partly on the consumer electronic device, as a stand-alone software package, partly on the consumer electronic device and partly on a remote electronic device, or entirely on the remote electronic device or server. In the case of remote electronic devices, the remote electronic devices may be connected to the consumer electronic device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external electronic device (e.g., through the internet using an internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, according to embodiments of the application. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.
Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and block diagrams, and combinations of flows and blocks in the flow diagrams and 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 block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A PN detection processing method is characterized by comprising the following steps:
determining a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after DPF treatment;
determining a decision parameter based on the first and second content values;
if the judgment parameter meets a first preset condition, connecting the exhaust gas of the oil-gas separator into an air inlet pipeline to perform DPF treatment on the exhaust gas at the outlet of the oil-gas separator;
and if the judgment parameter does not meet the first preset condition, exhausting the gas of the oil-gas separator.
2. The method of claim 1, wherein determining a first value of a PN content in an oil separator outlet exhaust comprises:
determining the uncorrected content value of PN in the exhaust gas at the outlet of the oil-gas separator according to the current engine speed and the engine oil amount;
determining a first correction coefficient corresponding to the uncorrected content value according to a preset corresponding relation between the PN content value of the oil-gas separator and the correction coefficient;
and correcting the uncorrected content value according to the first correction coefficient to obtain the first content value.
3. The method of claim 1, wherein determining a second value for the PN content of the DPF treated exhaust gas comprises:
determining an original engine PN value before DPF processing according to the current engine speed and the engine oil amount;
determining a basic conversion efficiency value corresponding to the current DPF temperature according to the corresponding relation between the DPF temperature and the basic conversion efficiency of the DPF to the original machine PN;
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the original machine PN value and the basic conversion efficiency value.
4. The method of claim 3, further comprising:
determining a second correction coefficient corresponding to the current original machine PN value according to the preset corresponding relation between the original machine PN value and the correction coefficient;
correcting the original machine PN value according to the second correction coefficient to obtain a corrected original machine PN value;
determining a second value for the PN content of the exhaust after DPF treatment, comprising:
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the corrected original machine PN value and the PN basic conversion efficiency.
5. The method of claim 4, further comprising:
determining a third correction coefficient corresponding to the current carbon loading capacity of the DPF according to a preset corresponding relation between the carbon loading capacity of the DPF and the carbon loading capacity correction coefficient;
determining a fourth correction coefficient corresponding to the current vehicle speed according to a preset corresponding relation between the vehicle speed and the vehicle speed correction coefficient;
determining a fifth correction coefficient corresponding to the current DPF aging time according to the preset corresponding relation between the DPF aging time and the aging time correction coefficient;
determining a PN conversion efficiency value according to the PN basic conversion efficiency value, the third correction coefficient, the fourth correction coefficient and the fifth correction coefficient;
determining a second value for the PN content of the exhaust after DPF treatment, comprising:
and determining a second content value of PN in the exhaust gas after the DPF treatment according to the corrected original machine PN value and the PN conversion efficiency value.
6. The method according to any one of claims 1 to 5, wherein the determination of whether the decision parameter satisfies the first preset condition is performed by:
when the judgment parameter is larger than a preset threshold value, determining that the first preset condition is met; and when the judgment parameter is not larger than the preset threshold value, determining that the first preset condition is not met.
7. An apparatus for detecting and processing a PN, the apparatus comprising:
the system comprises a determination value module, a control module and a control module, wherein the determination value module is used for determining a first content value of PN in the exhaust gas at the outlet of the oil-gas separator and a second content value of PN in the exhaust gas after DPF treatment;
a decision parameter determining module for determining a decision parameter based on the first and second content values;
the first processing module is used for connecting the exhaust gas of the oil-gas separator into an air inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator if the judgment parameter meets a first preset condition;
and the second processing module is used for discharging the exhaust gas of the oil-gas separator if the judgment parameter does not meet the first preset condition.
8. An electronic device comprising at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.
9. The electronic device of claim 8, further comprising: the method comprises the following steps that a first switch is arranged on a first air outlet pipeline leading the oil-gas separator to the atmosphere, a second switch is arranged on a second air outlet pipeline leading the oil-gas separator to an air inlet pipeline in front of the supercharger, and the processor is specifically used for executing the following steps:
when the vehicle starts to run, if the judgment parameter does not meet a first preset condition, the first switch is turned on, and the second switch is turned off so as to discharge the exhaust gas of the oil-gas separator;
and if the judgment parameter meets a first preset condition, closing the first switch, and opening the second switch so as to connect the exhaust gas of the oil-gas separator into the air inlet pipeline to carry out DPF treatment on the exhaust gas at the outlet of the oil-gas separator.
10. A computer storage medium, characterized in that the computer storage medium stores a computer program for causing a computer to perform the method according to any one of claims 1-6.
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