CN114183226A - Efficiency monitoring method and device for particle catcher, electronic equipment and storage medium - Google Patents
Efficiency monitoring method and device for particle catcher, electronic equipment and storage medium Download PDFInfo
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- CN114183226A CN114183226A CN202111572153.XA CN202111572153A CN114183226A CN 114183226 A CN114183226 A CN 114183226A CN 202111572153 A CN202111572153 A CN 202111572153A CN 114183226 A CN114183226 A CN 114183226A
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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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/04—Filtering activity of particulate filters
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The application discloses an efficiency monitoring method and device of a particle trap, electronic equipment and a storage medium, wherein the efficiency monitoring method of the particle trap comprises the following steps: acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor in real time; judging whether the pressure difference between the current gas static pressure at the upstream of the particle catcher and the gas dynamic pressure at the downstream of the particle catcher is smaller than a preset limit value or not; if the pressure difference between the current gas static pressure at the upstream of the particle catcher and the current gas dynamic pressure at the downstream of the particle catcher is judged to be smaller than a preset limit value, the trapping efficiency fault of the particle catcher is fed back, and the difference between the pressure collected by the sensor and the set lower limit value is increased, so that the missing report and the false report are effectively avoided, and the efficiency of the particle catcher is accurately monitored.
Description
Technical Field
The present disclosure relates to the field of exhaust gas treatment technologies, and in particular, to a method and an apparatus for monitoring efficiency of a particle trap, an electronic device, and a storage medium.
Background
In order to reach the exhaust emission of the vehicle, a Particulate Filter (DPF) is installed in an aftertreatment system of the existing vehicle to trap solid particles in the exhaust gas through the DPF.
In order to avoid the exhaust emissions from being too high due to too low efficiency of the particulate trap, real-time monitoring of the efficiency of the particulate trap is required. Another method is mainly adopted in the prior art, and one method is as follows: the method comprises the steps that bleed air pipes are arranged on the outer walls of the upstream and the downstream of the particle catcher and connected with pressure sensors, so that the pressure difference between the static pressure of the tail gas of the upstream and the static pressure of the tail gas of the downstream of the particle catcher is measured through the pressure sensors, and an alarm is given when the pressure difference is smaller than a lower limit value. The other is as follows: the particulate matter concentration in the gas downstream of the particulate trap is directly measured by an additional PM sensor.
However, the use of PM sensors increases cost and decreases system reliability. In the first method, since the particulate trap is usually partially leaked, the pressure difference between the static pressure of the exhaust gas upstream and the static pressure of the exhaust gas downstream of the particulate trap is relatively large under normal conditions or fault conditions, so that the pressure difference is relatively close to the lower limit value, and the sensor is affected by the factors such as consistency and precision, so that false alarm or false alarm is easily caused.
Disclosure of Invention
Based on the defects of the prior art, the application provides an efficiency monitoring method and device of a particle trap, electronic equipment and a storage medium, so as to solve the problem that false alarm or missing report easily occurs in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
a first aspect of the present application provides a method of monitoring the efficiency of a particle trap, comprising:
acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor in real time;
judging whether the pressure difference between the current gas static pressure at the upstream of the particle catcher and the gas dynamic pressure at the downstream of the particle catcher is smaller than a preset limit value or not;
and if the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher is smaller than a preset limit value, feeding back that the particle catcher has a trapping efficiency fault.
Optionally, in the method of monitoring the efficiency of a particle trap described above, the target sensor comprises a sensor body, an upstream bleed air duct and a downstream bleed air duct; an air outlet of the upstream air entraining pipe is connected with the sensor main body, and an air inlet is arranged on the outer wall of the upstream of the particle catcher; the gas outlet of low reaches bleed pipe is connected the sensor main part, and the air inlet is horn mouth formula, sets up particle trap's low reaches, and just right particle trap's the direction of admitting air, acquire target sensor in real time and gather the aerostatic pressure of current particle trap upper reaches with the pressure differential of the gaseous dynamic pressure in particle trap low reaches includes:
and acquiring the pressure difference calculated by the sensor main body based on the air inlet of the upstream air-entraining pipe and the air inlet of the downstream air-entraining pipe in real time.
Optionally, in the method for monitoring the efficiency of the particle trap, before the acquiring, in real time, a pressure difference between a static gas pressure upstream of the particle trap and a dynamic gas pressure downstream of the particle trap, the acquiring, in real time, further includes:
monitoring whether a release condition is met currently; the release condition refers to a preset precondition for ensuring the measurement accuracy of the target sensor;
if the current condition is monitored to meet the release condition, executing the real-time acquisition of the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor;
if the current situation that the release condition is not met is monitored, stopping acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by the target sensor, and feeding back prompt information; wherein the prompt message is used to prompt that the efficiency of the particle trap cannot be monitored under current conditions.
Optionally, in the above method for monitoring the efficiency of the particle trap, the monitoring whether the release condition is currently met includes:
acquiring current environmental parameters; wherein the current environmental parameters include a current environmental pressure and a current environmental temperature;
judging whether the current environmental pressure is in a preset pressure range or not and whether the current environmental temperature is in a preset temperature range or not;
if the environmental pressure is within a preset pressure range and the environmental temperature is within a preset temperature range, detecting whether a specified fault exists; wherein the specified fault is a fault affecting the measurement accuracy of the target sensor;
if no specified fault exists, judging whether the target sensor is ready;
if the target sensor is judged to be ready, acquiring the data of each target working condition; the target working condition data comprises a fuel liquid level, an exhaust gas volume flow, an engine rotating speed, a fuel injection amount and a carbon carrying amount;
judging whether each target working condition data is in a corresponding range threshold value;
and if the target working condition data are judged to be in the corresponding range threshold, determining that the release conditions are met currently.
A second aspect of the present application provides an efficiency monitoring apparatus for a particle trap, comprising:
the first acquisition unit is used for acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor in real time;
the first judgment unit is used for judging whether the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher is smaller than a preset limit value or not;
and the feedback unit is used for feeding back that the particle catcher has a trapping efficiency fault when the pressure difference between the current gas static pressure at the upstream of the particle catcher and the gas dynamic pressure at the downstream of the particle catcher is judged to be smaller than a preset limit value.
Optionally, in the above-mentioned apparatus for monitoring the efficiency of a particle trap, the target sensor comprises a sensor body, an upstream bleed air duct and a downstream bleed air duct; an air outlet of the upstream air entraining pipe is connected with the sensor main body, and an air inlet is arranged on the outer wall of the upstream of the particle catcher; the gas outlet of low reaches bleed pipe is connected the sensor main part, the air inlet sets up for loudspeaker mouth formula the low reaches of particle trap, and just right the air inlet direction of particle trap, first acquisition unit includes:
and the first acquisition subunit is used for acquiring the pressure difference calculated by the sensor main body based on the air inlet of the upstream bleed air pipe and the air inlet of the downstream bleed air pipe in real time.
Optionally, in the above apparatus for monitoring efficiency of a particle trap, the apparatus further comprises:
the monitoring unit is used for monitoring whether the current release condition is met; the release condition refers to a preset precondition for ensuring the measurement accuracy of the target sensor; when the condition that the current passing condition is met is monitored, the first obtaining unit executes the real-time obtaining of the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is collected by the target sensor;
the forbidding unit is used for stopping acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by the target sensor, and feeding back prompt information when the situation that the current situation does not meet the release condition is monitored; wherein the prompt message is used to prompt that the efficiency of the particle trap cannot be monitored under current conditions.
Optionally, in the above-mentioned apparatus for monitoring the efficiency of a particle trap, the monitoring unit comprises:
the second acquisition unit is used for acquiring the current environment parameters; wherein the current environmental parameters include a current environmental pressure and a current environmental temperature;
the second judgment unit is used for judging whether the current environmental pressure is in a preset pressure range or not and whether the current environmental temperature is in a preset temperature range or not;
the detection unit is used for detecting whether a specified fault exists or not when the environmental pressure is judged to be in a preset pressure range and the environmental temperature is judged to be in a preset temperature range; wherein the specified fault is a fault affecting the measurement accuracy of the target sensor;
a third unit configured to determine whether the target sensor is ready when it is detected that there is no specified failure;
the third acquisition unit is used for acquiring the data of each target working condition when the target sensor is judged to be ready; the target working condition data comprises a fuel liquid level, an exhaust gas volume flow, an engine rotating speed, a fuel injection amount and a carbon carrying amount;
the third judging unit is used for judging whether each target working condition data is in the corresponding range threshold value;
and the determining unit is used for determining that each release condition is currently met when each target working condition data is judged to be in the corresponding range threshold.
A third aspect of the present application provides an electronic device comprising:
a memory and a processor;
wherein the memory is used for storing programs;
the processor is adapted to execute the program, which when executed is particularly adapted to carry out the method of efficiency monitoring of a particle trap as defined in any of the above.
A fourth aspect of the application provides a computer storage medium for storing a computer program which, when executed, is adapted to carry out the method of efficiency monitoring of a particle trap as defined in any of the above.
The application provides an efficiency monitoring method of a particle trap, which is used for acquiring the pressure difference between the static gas pressure at the upstream of the current particle trap and the dynamic gas pressure at the downstream of the particle trap in real time by a target sensor and judging whether the pressure difference between the static gas pressure at the upstream of the current particle trap and the dynamic gas pressure at the downstream of the current particle trap is smaller than a preset limit value or not. If the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher is smaller than the preset limit value, the trapping efficiency fault of the particle catcher is fed back, and because small standard leakage occurs in the particle catcher in time, all dynamic pressures of the inflowing gas can be almost measured, namely the dynamic pressure at the tail part is larger, when the particle catcher is in fault, the difference between the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher and the set limit value is larger, so that the situations of false alarm and false alarm can be effectively avoided, and the accurate monitoring of the efficiency of the particle catcher is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart illustrating a method for monitoring the efficiency of a particle trap according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a target sensor according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of another method for monitoring the efficiency of a particle trap according to another embodiment of the present application;
FIG. 4 is a flowchart of a method for monitoring whether a release condition is currently satisfied according to another embodiment of the present application;
FIG. 5 is a schematic diagram of an efficiency monitoring apparatus for a particle trap according to another embodiment of the present disclosure;
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 clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the present application provides a method for monitoring the efficiency of a particle trap, as shown in fig. 1, comprising the following steps:
s101, acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the particle catcher, which is acquired by a target sensor in real time.
Where static pressure refers to the pressure imparted by a fluid on a surface of an object parallel to the direction of fluid flow. The dynamic pressure refers to a pressure rise when energy possessed by a fluid due to having a flow velocity is converted into pressure without loss.
Alternatively, in embodiments of the present application, the pressure difference between the static gas pressure upstream of the particulate trap and the dynamic gas pressure downstream of the particulate trap is measured directly by a target sensor.
Alternatively, the target sensor may measure the static gas pressure upstream of the current particle trap and the dynamic gas pressure downstream of the current particle trap, and then calculate the difference between the static gas pressure upstream of the current particle trap and the dynamic gas pressure downstream of the current particle trap to obtain the pressure difference therebetween. Alternatively, the object sensors may comprise two sensors, by which the static gas pressure upstream of the particle trap and the dynamic gas pressure downstream of the particle trap are measured.
This approach is of course relatively costly and affects the reliability of the system. In the present embodiment, therefore, the primary target sensor directly measures the difference between the static gas pressure upstream of the particulate trap and the dynamic gas pressure downstream of the particulate trap.
In order to enable direct measurement of the pressure differential between the static gas pressure upstream of the particulate trap and the dynamic gas pressure downstream of the particulate trap, another embodiment of the present application provides a target sensor, as shown in fig. 2, comprising: a sensor body, an upstream bleed air duct and a downstream bleed air duct.
The air outlet of the upstream bleed air pipe is connected with the sensor main body, and the air inlet of the upstream bleed air pipe is arranged on the outer wall of the upstream of the particle catcher, so that the upstream static pressure of the gas in the upstream of the particle catcher can be measured.
The outlet opening of the downstream bleed air duct is likewise connected to the sensor body, but is arranged downstream of the particle trap and directly opposite the inlet direction of the particle trap, so that it can be used to measure the dynamic gas pressure downstream of the particle trap, so that the downstream bleed air duct can be a right-angled bend, as shown in fig. 2.
Alternatively, the inlet of the upstream bleed air duct may be flared in order to ensure that leaked air can flow into the downstream bleed air duct to accurately measure the dynamic pressure downstream of the particle trap, since it is uncertain where damage to the particle trap occurs.
The upstream bleed air duct may be configured to measure a static gas pressure upstream of the particulate trap and the downstream bleed air duct may be configured to measure a dynamic gas pressure downstream of the particulate trap, such that the sensor body is directly based on a pressure difference directly measured between an air intake of the upstream bleed air duct and an air intake of the downstream bleed air duct, i.e., a pressure difference between the static gas pressure upstream of the particulate trap and the dynamic gas pressure downstream of the particulate trap.
Accordingly, in the embodiment of the present application, the specific implementation manner of step S101 is:
and acquiring the pressure difference calculated by the sensor main body based on the air inlet of the upstream air guide pipe and the air inlet of the downstream air guide pipe in real time.
S102, judging whether the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher is smaller than a preset limit value or not.
The pressure difference between the static gas pressure upstream of the particle trap and the dynamic gas pressure downstream of the particle trap is smaller than a preset limit value, which indicates that the particle trap is damaged, the tail gas is not completely filtered through the walls around the particle trap, and a part of the tail gas passes through the bottom of the particle trap and directly goes downstream, as shown by a dotted square in fig. 2, so that the pressure difference between the static gas pressure upstream of the particle trap and the dynamic gas pressure downstream of the particle trap is smaller than the preset limit value, at this moment, part of the tail gas is not effectively filtered, so that the trapping efficiency of the particle trap is too low, and step S103 is executed at this moment.
S103, the trapping efficiency of the particle trap is failed in feedback.
Alternatively, the presence of a trapping efficiency failure of the particulate trap may be fed back to the driver by means of a malfunction light or a display directly on the central control screen, etc.
The embodiment of the application provides an efficiency monitoring method of a particle trap, which is used for acquiring the pressure difference between the static gas pressure at the upstream of the current particle trap and the dynamic gas pressure at the downstream of the current particle trap in real time by a target sensor and judging whether the pressure difference between the static gas pressure at the upstream of the current particle trap and the dynamic gas pressure at the downstream of the current particle trap is smaller than a preset limit value or not. If the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher is smaller than the preset limit value, the trapping efficiency fault of the particle catcher is fed back, and because small standard leakage occurs in the particle catcher in time, all dynamic pressures of the inflowing gas can be almost measured, namely the dynamic pressure at the tail part is larger, when the particle catcher is in fault, the difference between the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher and the set limit value is larger, so that the situations of false alarm and false alarm can be effectively avoided, and the accurate monitoring of the efficiency of the particle catcher is realized.
Another embodiment of the present application provides another method for monitoring the efficiency of a particle trap, as shown in fig. 3, comprising the steps of:
s301, whether the current release condition is met or not is monitored.
The release condition refers to a preset precondition for ensuring the measurement accuracy of the target sensor.
Because the accuracy of the target sensor measurement can be seriously reduced in a severe environment or a severe working condition, the efficiency of the particle catcher can not be accurately monitored based on the differential pressure measured by the target sensor. In the embodiment of the present application, therefore, it is necessary to set the release conditions and check whether each release condition is currently satisfied. If the release condition is not satisfied, step S302 is executed. If the current release condition is satisfied, step S303 is executed.
In another embodiment of the present application, a specific implementation manner of step S301, as shown in fig. 4, includes the following steps:
s401, obtaining current environment parameters.
Wherein the current environmental parameter includes a current environmental pressure and a current environmental temperature.
S402, judging whether the current environment pressure is in a preset pressure range or not and whether the current environment temperature is in a preset temperature range or not.
If the environmental pressure is within the preset pressure range and the environmental temperature is within the preset temperature range, it is determined that the environment is not in a severe environment, so that the next release condition can be determined, and step S403 is executed at this time. Accordingly, if it is determined that the ambient pressure is not within the preset pressure range or the ambient temperature is within the preset temperature range, step S408 is executed.
S403, detecting whether the specified fault exists.
Wherein the specified fault is a fault affecting the measurement accuracy of the target sensor, such as a sensor fault.
If it is checked that there is no specific failure, the next release condition is determined, that is, step S404 is executed. If it is checked that there is a specified failure, step S408 is directly performed.
S404, judging whether the target sensor is ready.
If it is determined that the target sensor is ready, the next release condition is determined, and step S405 is executed. If it is determined that the target sensor is not ready, step S408 is performed.
S405, obtaining target working condition data.
Wherein, because the vehicle of differential pressure also can be influenced to too much abominable operating condition of vehicle, consequently, whether monitoring vehicle is in the disclosure of comparatively steady state through a plurality of target operating condition data in this application embodiment.
The target working condition data comprises fuel liquid level, waste gas volume flow, engine rotating speed, fuel injection quantity and carbon carrying capacity.
And S406, judging whether each target working condition data is in the corresponding range threshold value.
If it is determined that each target operating condition data is within the corresponding range threshold, step S407 is executed. If it is determined that any one of the target operating condition data is within the corresponding range threshold, step S407 is executed.
S407, determining that the release condition is currently met.
It should be noted that in the embodiment of the present application, the order of determining each specific release condition is only one of the optional manners, and other manners may also be adopted, so long as all the release conditions are satisfied, step S407 is executed. When any one of the release conditions is not satisfied, step S408 is executed.
And S408, determining that the release condition is not met currently.
S302, stopping acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, and feeding back prompt information.
Wherein the prompt message is used to prompt that the efficiency of the particle trap cannot be monitored under the current conditions.
And S303, acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the particle catcher, which is acquired by the target sensor in real time.
It should be noted that, in the specific implementation of step S303, reference may be made to step S101 in the foregoing method embodiment, and details are not described here again.
S304, judging whether the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher is smaller than a preset limit value.
If the pressure difference between the static pressure of the gas upstream of the particle catcher and the dynamic pressure of the gas downstream of the particle catcher is smaller than the preset limit value, step S305 is executed.
It should be noted that, for the specific implementation of step S304, reference may be made to step S102 in the foregoing method embodiment, and details are not described here again.
S305, the trapping efficiency of the particle trap is failed through feedback.
It should be noted that, for the specific implementation of step S305, reference may be made to step S103 in the foregoing method embodiment, and details are not described here again.
It is to be noted that the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Although the operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous.
Another embodiment of the present application provides an efficiency monitoring apparatus of a particle trap, as shown in fig. 5, including the following units:
the first obtaining unit 501 is configured to obtain, in real time, a pressure difference between the static gas pressure upstream of the particle trap and the dynamic gas pressure downstream of the particle trap, where the pressure difference is collected by a target sensor.
The first determining unit 502 is configured to determine whether a pressure difference between a static gas pressure upstream of the particulate trap and a dynamic gas pressure downstream of the particulate trap is smaller than a preset limit.
And the feedback unit 503 is configured to feed back that the particle trap has a trapping efficiency failure when it is determined that a pressure difference between the static gas pressure upstream of the particle trap and the dynamic gas pressure downstream of the particle trap is smaller than a preset limit value.
Optionally, in another embodiment of the present application, an efficiency monitoring apparatus for a particle trap is provided in which the target sensor includes a sensor body, an upstream bleed air duct, and a downstream bleed air duct. An air outlet of the upstream air guide pipe is connected with the sensor main body, and an air inlet is arranged on the outer wall of the upstream of the particle catcher. The air outlet of the downstream air guide pipe is connected with the sensor main body, and the air inlet is of a horn mouth type, is arranged at the downstream of the particle catcher and is just opposite to the air inlet direction of the particle catcher. The first obtaining unit in the embodiment of the present application includes:
and the first acquisition subunit is used for acquiring the pressure difference calculated by the sensor main body based on the air inlet of the upstream air guide pipe and the air inlet of the downstream air guide pipe in real time.
Optionally, in an efficiency monitoring apparatus of a particle trap provided in another embodiment of the present application, the apparatus further includes:
and the monitoring unit is used for monitoring whether the current release condition is met. The release condition refers to a preset precondition for ensuring the measurement accuracy of the target sensor.
When the condition that the current passing condition is met is monitored, the first obtaining unit obtains the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher acquired by the target sensor in real time.
And the prohibiting unit is used for stopping acquiring the pressure difference between the current gas static pressure at the upstream of the particle catcher and the current gas dynamic pressure at the downstream of the particle catcher, which is acquired by the target sensor, and feeding back prompt information when the current situation that the release condition is not met is monitored. Wherein the prompt message is used to prompt that the efficiency of the particle trap cannot be monitored under the current conditions.
Optionally, in an efficiency monitoring apparatus of a particle trap provided in another embodiment of the present application, the monitoring unit includes:
and the second acquisition unit is used for acquiring the current environment parameters. Wherein the current environmental parameter includes a current environmental pressure and a current environmental temperature.
And the second judgment unit is used for judging whether the current environmental pressure is in a preset pressure range or not and whether the current environmental temperature is in a preset temperature range or not.
And the detection unit is used for detecting whether the specified fault exists or not when the environmental pressure is judged to be in the preset pressure range and the environmental temperature is in the preset temperature range. Wherein the specified fault is a fault affecting the measurement accuracy of the target sensor.
A third unit for judging whether the target sensor is ready or not when it is detected that there is no specified failure.
And the third acquisition unit is used for acquiring each target working condition data when the target sensor is judged to be ready. The target working condition data comprises fuel liquid level, waste gas volume flow, engine rotating speed, fuel injection quantity and carbon carrying capacity.
And the third judging unit is used for judging whether each target working condition data is in the corresponding range threshold value.
And the determining unit is used for determining that each release condition is currently met when each target working condition data is judged to be in the corresponding range threshold.
It should be noted that, for the specific working processes of each unit provided in the foregoing embodiments of the present application, corresponding steps in the foregoing method embodiments may be referred to accordingly, and are not described herein again.
Another embodiment of the present application provides an electronic device, as shown in fig. 6, including:
a memory 601 and a processor 602.
The memory 601 is used for storing programs.
The processor 602 is adapted to execute a program stored in the memory 601, which program, when executed, is adapted to carry out the method of monitoring the efficiency of a particle trap as provided in any of the above embodiments.
Another embodiment of the application provides a computer storage medium for storing a computer program which, when executed, is adapted to implement the method for monitoring the efficiency of a particle trap as provided in any of the above embodiments.
Computer storage media, including permanent and non-permanent, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of monitoring the efficiency of a particle trap, comprising:
acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor in real time;
judging whether the pressure difference between the current gas static pressure at the upstream of the particle catcher and the gas dynamic pressure at the downstream of the particle catcher is smaller than a preset limit value or not;
and if the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher is smaller than a preset limit value, feeding back that the particle catcher has a trapping efficiency fault.
2. The method of claim 1, wherein the target sensor comprises a sensor body, an upstream bleed air duct, and a downstream bleed air duct; an air outlet of the upstream air entraining pipe is connected with the sensor main body, and an air inlet is arranged on the outer wall of the upstream of the particle catcher; the gas outlet of low reaches bleed pipe is connected the sensor main part, and the air inlet is horn mouth formula, sets up particle trap's low reaches, and just right particle trap's the direction of admitting air, acquire target sensor in real time and gather the aerostatic pressure of current particle trap upper reaches with the pressure differential of the gaseous dynamic pressure in particle trap low reaches includes:
and acquiring the pressure difference calculated by the sensor main body based on the air inlet of the upstream air-entraining pipe and the air inlet of the downstream air-entraining pipe in real time.
3. The method of claim 1, wherein the obtaining the target sensor in real time further comprises, before the acquiring a pressure difference between a current static gas pressure upstream of the particle trap and a current dynamic gas pressure downstream of the particle trap:
monitoring whether a release condition is met currently; the release condition refers to a preset precondition for ensuring the measurement accuracy of the target sensor;
if the current condition is monitored to meet the release condition, executing the real-time acquisition of the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor;
if the current situation that the release condition is not met is monitored, stopping acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by the target sensor, and feeding back prompt information; wherein the prompt message is used to prompt that the efficiency of the particle trap cannot be monitored under current conditions.
4. The method of claim 3, wherein the monitoring whether a release condition is currently satisfied comprises:
acquiring current environmental parameters; wherein the current environmental parameters include a current environmental pressure and a current environmental temperature;
judging whether the current environmental pressure is in a preset pressure range or not and whether the current environmental temperature is in a preset temperature range or not;
if the environmental pressure is within a preset pressure range and the environmental temperature is within a preset temperature range, detecting whether a specified fault exists; wherein the specified fault is a fault affecting the measurement accuracy of the target sensor;
if no specified fault exists, judging whether the target sensor is ready;
if the target sensor is judged to be ready, acquiring the data of each target working condition; the target working condition data comprises a fuel liquid level, an exhaust gas volume flow, an engine rotating speed, a fuel injection amount and a carbon carrying amount;
judging whether each target working condition data is in a corresponding range threshold value;
and if the target working condition data are judged to be in the corresponding range threshold, determining that the release conditions are met currently.
5. An efficiency monitoring apparatus of a particle trap, comprising:
the first acquisition unit is used for acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by a target sensor in real time;
the first judgment unit is used for judging whether the pressure difference between the static gas pressure at the upstream of the particle catcher and the dynamic gas pressure at the downstream of the particle catcher is smaller than a preset limit value or not;
and the feedback unit is used for feeding back that the particle catcher has a trapping efficiency fault when the pressure difference between the current gas static pressure at the upstream of the particle catcher and the gas dynamic pressure at the downstream of the particle catcher is judged to be smaller than a preset limit value.
6. The apparatus of claim 5 wherein the target sensor comprises a sensor body, an upstream bleed air duct and a downstream bleed air duct; an air outlet of the upstream air entraining pipe is connected with the sensor main body, and an air inlet is arranged on the outer wall of the upstream of the particle catcher; the gas outlet of low reaches bleed pipe is connected the sensor main part, the air inlet sets up for loudspeaker mouth formula the low reaches of particle trap, and just right the air inlet direction of particle trap, first acquisition unit includes:
and the first acquisition subunit is used for acquiring the pressure difference calculated by the sensor main body based on the air inlet of the upstream bleed air pipe and the air inlet of the downstream bleed air pipe in real time.
7. The apparatus of claim 5, further comprising:
the monitoring unit is used for monitoring whether the current release condition is met; the release condition refers to a preset precondition for ensuring the measurement accuracy of the target sensor; when the condition that the current passing condition is met is monitored, the first obtaining unit executes the real-time obtaining of the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is collected by the target sensor;
the forbidding unit is used for stopping acquiring the pressure difference between the static gas pressure at the upstream of the current particle catcher and the dynamic gas pressure at the downstream of the current particle catcher, which is acquired by the target sensor, and feeding back prompt information when the situation that the current situation does not meet the release condition is monitored; wherein the prompt message is used to prompt that the efficiency of the particle trap cannot be monitored under current conditions.
8. The apparatus of claim 7, wherein the monitoring unit comprises:
the second acquisition unit is used for acquiring the current environment parameters; wherein the current environmental parameters include a current environmental pressure and a current environmental temperature;
the second judgment unit is used for judging whether the current environmental pressure is in a preset pressure range or not and whether the current environmental temperature is in a preset temperature range or not;
the detection unit is used for detecting whether a specified fault exists or not when the environmental pressure is judged to be in a preset pressure range and the environmental temperature is judged to be in a preset temperature range; wherein the specified fault is a fault affecting the measurement accuracy of the target sensor;
a third unit configured to determine whether the target sensor is ready when it is detected that there is no specified failure;
the third acquisition unit is used for acquiring the data of each target working condition when the target sensor is judged to be ready; the target working condition data comprises a fuel liquid level, an exhaust gas volume flow, an engine rotating speed, a fuel injection amount and a carbon carrying amount;
the third judging unit is used for judging whether each target working condition data is in the corresponding range threshold value;
and the determining unit is used for determining that each release condition is currently met when each target working condition data is judged to be in the corresponding range threshold.
9. An electronic device, comprising:
a memory and a processor;
wherein the memory is used for storing programs;
the processor is adapted to execute the program, which when executed is adapted to carry out the method of efficiency monitoring of a particle trap according to any of claims 1 to 4.
10. A computer storage medium for storing a computer program which, when executed, is adapted to carry out a method of efficiency monitoring of a particle trap as claimed in any one of claims 1 to 4.
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| CN115126583A (en) * | 2022-07-18 | 2022-09-30 | 潍柴动力股份有限公司 | Fault diagnosis method and system for double-path particle catcher |
| CN115341981A (en) * | 2022-08-29 | 2022-11-15 | 潍柴动力股份有限公司 | Particulate matter trap fault detection method, device and equipment |
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