CN115324755A - Valve jamming processing method and device, electronic equipment and storage medium - Google Patents
Valve jamming processing method and device, electronic equipment and storage medium Download PDFInfo
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- CN115324755A CN115324755A CN202211261212.6A CN202211261212A CN115324755A CN 115324755 A CN115324755 A CN 115324755A CN 202211261212 A CN202211261212 A CN 202211261212A CN 115324755 A CN115324755 A CN 115324755A
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- gas recirculation
- recirculation system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/49—Detecting, diagnosing or indicating an abnormal function of the EGR system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The application discloses a valve clamping stagnation processing method and device, electronic equipment and a storage medium, wherein the method comprises the following steps: monitoring the current actual opening and the current target opening of a valve of an exhaust gas recirculation system of a target vehicle in real time; judging whether the valve of the exhaust gas recirculation system has a clamping stagnation fault or not based on the current actual opening and the current target opening; if the jamming fault exists, prompting the current driver of the target vehicle to stop and flameout; when the target vehicle is monitored to be stopped and flamed out, controlling the whole target vehicle to be electrified; repeatedly controlling the valve of the exhaust gas recirculation system to open to a target opening degree according to the target repeated control times, and closing after the valve lasts for a preset time length; sending an instruction for opening a target detection opening degree to the exhaust gas recirculation system valve, and acquiring an actual detection opening degree of the exhaust gas recirculation system valve; judging whether the clamping stagnation fault is repaired or not based on the target detection opening and the actual detection opening; and if the stuck fault is repaired, prompting that the stuck fault is repaired.
Description
Technical Field
The present disclosure relates to the field of vehicle fault processing technologies, and in particular, to a method and an apparatus for processing valve clamping stagnation, an electronic device, and a storage medium.
Background
For engines with Exhaust Gas Recirculation (EGR), an EGR valve is a very important component because its opening controls the flow of Exhaust Gas into the engine, affecting fuel combustion in the engine.
During the actual use of the vehicle, foreign objects such as sticking sand on the inner surface of a casting, metal working chips, etc. may fall off in the pipe in front of the valve of the exhaust gas recirculation system. When passing through the exhaust gas recirculation system valve, the foreign matters may be clamped between the valve and the valve body of the exhaust gas recirculation system valve, so that the opening of the exhaust gas recirculation system valve cannot be accurately opened to the target opening of the control command sent by the ECU, the gas flow entering the engine cannot meet the requirement, further insufficient fuel combustion may be caused, and the power of the engine is insufficient. It may also cause problems such as the engine not igniting properly, or unburned fuel entering and burning in the aftertreatment system, such as a three-way catalyst, causing components in the aftertreatment system to burn and damage.
So current vehicles monitor the egr valve and when it is detected that the egr valve is stuck, the engine torque is directly limited. After the driver drives the vehicle to a maintenance station to repair the stuck fault of the exhaust gas recirculation system valve, the limitation on the torque of the engine is cancelled, and the normal running of the vehicle is recovered. Obviously, the mode only protects the engine and the aftertreatment system to a certain extent, but can not eliminate the clamping stagnation fault of the valve of the exhaust gas recirculation system in time, so that the normal running of the vehicle can be influenced for a long time when the vehicle can not enter the station in time for maintenance.
Disclosure of Invention
Based on the defects of the prior art, the application provides a valve clamping stagnation processing method and device, electronic equipment and a storage medium, so as to solve the problem that the vehicle cannot normally run for a long time in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a method for treating valve jamming in a first aspect, which comprises the following steps:
monitoring the current actual opening of an exhaust gas recirculation system valve of a target vehicle and the current target opening of the exhaust gas recirculation system valve in real time in the running process of the target vehicle;
determining whether a sticking fault exists in the exhaust gas recirculation system valve based on the current actual opening and the current target opening of the exhaust gas recirculation system valve;
if the exhaust gas recirculation system valve is judged to have the clamping stagnation fault, prompting a current driver of the target vehicle to stop and flameout;
when the target vehicle is monitored to be stopped and flamed out, controlling the whole target vehicle to be electrified;
repeatedly controlling the valve of the waste gas recirculation system to be opened to a target opening degree according to the target repeated control times, and closing the valve after the valve is continuously kept for a preset time length; wherein the EGR valve is vertically mounted on the target vehicle such that when the EGR valve is repeatedly controlled to open and close, foreign matter in the EGR valve falls out of the EGR valve under the action of gravity;
sending an instruction for opening a target detection opening degree to the exhaust gas recirculation system valve, and acquiring an actual detection opening degree of the exhaust gas recirculation system valve;
determining whether a stuck fault of the EGR valve has been repaired based on the target detected opening and the actual detected opening of the EGR valve;
and if the clamping stagnation fault of the exhaust gas recirculation system valve is judged to be repaired, prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is repaired.
Optionally, in the above method for processing valve sticking, the determining whether there is a sticking fault in the egr valve based on the current actual opening and the current target opening of the egr valve includes:
judging whether the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is larger than a preset threshold value or not;
if the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be larger than a preset threshold value, determining that the exhaust gas recirculation system valve has a clamping stagnation fault;
and if the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be not larger than a preset threshold value, determining that the exhaust gas recirculation system valve has no clamping stagnation fault.
Optionally, in the above method for treating valve sticking, the method further includes:
if the clamping stagnation fault of the exhaust gas recirculation system valve is judged not to be repaired, feeding back target alarm prompt information; the target alarm prompt information is used for prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is not automatically repaired and needs to be manually maintained.
Optionally, in the above method for treating valve sticking, the target opening is a maximum opening, and the repeatedly controlling the exhaust gas recirculation system valve to open to the target opening according to the target repeated control times and to close after the preset time duration includes:
and repeatedly controlling the valve of the waste gas recirculation system to be opened to the maximum opening degree according to the target repeated control times, and closing the valve after the valve is continuously opened for a preset time length.
Optionally, in the above method for treating valve sticking, the repeatedly controlling the exhaust gas recirculation system valve to open to a target opening according to a target repeated control number, and to close after a preset time duration, includes:
initializing a number of controls of the exhaust gas recirculation system valve to zero;
controlling the valve of the exhaust gas recirculation system to be opened to the target opening degree;
after the preset time period, controlling the valve of the exhaust gas recirculation system to be closed;
adding one to the number of controls of the exhaust gas recirculation system valve;
judging whether the control times of the exhaust gas recirculation system valve are larger than the target repetitive control times or not;
and if the control frequency of the waste gas recirculation system valve is judged to be not more than the target repetitive control frequency, returning to control the waste gas recirculation system valve to be opened to the target opening degree until the control frequency of the waste gas recirculation system valve is more than the target repetitive control frequency.
Optionally, in the above method for treating valve sticking, before the repeatedly controlling the exhaust gas recirculation system valve to open to the target opening according to the target repeated control times and closing after the preset time duration, the method further includes:
finding out a target preset difference range in which the absolute value of the difference between the current actual opening and the current target opening of the exhaust gas recirculation system valve is located from each preset difference range;
determining the preset control times corresponding to the target preset difference range as the target repetitive control times; and if the limit value of the preset difference range is larger, the corresponding preset control times are larger.
A second aspect of the present application provides a valve sticking processing apparatus, comprising:
the system comprises a starting monitoring unit, a control unit and a control unit, wherein the starting monitoring unit is used for monitoring the current actual opening of an exhaust gas recirculation system valve of a target vehicle and the current target opening of the exhaust gas recirculation system valve in real time in the running process of the target vehicle;
a first judging unit, configured to judge whether a sticking fault exists in the exhaust gas recirculation system valve based on the current actual opening and the current target opening of the exhaust gas recirculation system valve;
the first prompting unit is used for prompting a current driver of the target vehicle to stop and shut down when the exhaust gas recirculation system valve is judged to have the clamping stagnation fault;
the power-on control unit is used for controlling the whole target vehicle to be powered on when the target vehicle is monitored to be stopped and flameout;
the valve control unit is used for repeatedly controlling the valve of the waste gas recirculation system to be opened to a target opening degree according to the target repeated control times and to be closed after the valve is continuously opened for a preset time length; wherein the EGR valve is vertically mounted on the target vehicle such that foreign matter in the EGR valve falls out of the EGR valve under the action of gravity when the EGR valve is repeatedly controlled to open and close;
the detection unit is used for sending an instruction for opening a target detection opening degree to the exhaust gas recirculation system valve and acquiring an actual detection opening degree of the exhaust gas recirculation system valve;
a second determination unit configured to determine whether a sticking fault of the egr valve has been repaired based on the target detected opening degree and the actual detected opening degree of the egr valve;
and the second prompting unit is used for prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is repaired when the clamping stagnation fault of the exhaust gas recirculation system valve is judged to be repaired.
Optionally, in the above valve jam processing apparatus, the first determining unit includes:
a first judging subunit, configured to judge whether an absolute value of a difference between the current actual opening degree and the current target opening degree of the egr valve is greater than a preset threshold;
the first determining unit is used for determining that the exhaust gas recirculation system valve has a clamping stagnation fault when the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be larger than a preset threshold value;
and the second determination unit is used for determining that the exhaust gas recirculation system valve has no clamping stagnation fault when the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be not greater than a preset threshold value.
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 configured to execute the program, and when the program is executed, the program is specifically configured to implement the method for handling valve sticking as described in any one of the above.
A fourth aspect of the present application provides a computer storage medium for storing a computer program which, when executed, is configured to implement a method of handling valve sticking as defined in any one of the preceding claims.
The application provides a processing method of valve jamming requires that exhaust gas recirculation system valve is vertical to be installed on the target vehicle to can open and close through repeated control exhaust gas recirculation system valve, let the foreign matter in the exhaust gas recirculation system valve, drop out exhaust gas recirculation system valve under the action of gravity. Therefore, when the exhaust gas recirculation system valve is judged to have the clamping failure based on the current actual opening and the current target opening of the exhaust gas recirculation system valve of the target vehicle in the running process of the target vehicle, a current driver of the target vehicle is firstly prompted to stop and extinguish the engine so as to avoid the problems that fuel enters the post-processing system to burn, parts of the post-processing system are burnt and damaged, and the like. And then, when the target vehicle is monitored to be stopped and flamed out, controlling the whole target vehicle to be electrified so as to ensure that electric energy exists and then repeatedly controlling the valve of the exhaust gas recirculation system to be opened and closed for an unlimited time, and then immediately detecting whether the valve clamping stagnation fault is eliminated, so that the vehicle is prevented from being restarted before the clamping stagnation fault of the valve is eliminated. And then, according to the target repeated control times, repeatedly controlling the valve of the waste gas recirculation system to be opened to the target opening degree, and closing the valve after the valve is continuously kept for a preset time length so that foreign matters in the valve of the waste gas recirculation system have enough time to fall out of the valve of the waste gas recirculation system under the action of gravity. And finally, sending an instruction for opening the target detection opening degree to the exhaust gas recirculation system valve, acquiring the actual detection opening degree of the exhaust gas recirculation system valve, and judging whether the clamping stagnation fault of the exhaust gas recirculation system valve is repaired or not based on the target detection opening degree and the actual detection opening degree of the exhaust gas recirculation system valve, so as to timely detect whether the clamping stagnation fault is eliminated or not. If the clamping stagnation fault of the repaired exhaust gas recirculation system valve is judged, the clamping stagnation fault of the exhaust gas recirculation system valve is prompted to be repaired, and the problem that when the driver does not repair the vehicle, the vehicle is restarted to cause adverse effects on the engine and the aftertreatment system is avoided. Therefore, when the jamming fault of the valve of the exhaust gas recirculation system is monitored, the problems that fuel enters the post-processing system to burn, parts of the post-processing system are burnt, fused and damaged and the like can be effectively avoided, foreign matters can fall out of the valve based on gravity, the jamming fault can be automatically and timely eliminated, normal running of the vehicle can be quickly recovered, whether the jamming fault is eliminated or not can be timely detected, and the vehicle is prevented from being restarted when the jamming fault is not eliminated.
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 flowchart of a method for handling valve sticking according to an embodiment of the present disclosure;
FIG. 2 is a flow chart illustrating a method for determining whether a stuck fault exists in an EGR valve in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 is a flow chart illustrating a method for repeatedly controlling opening and closing of a valve of an exhaust gas recirculation system according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a method for determining a number of target repetitive controls according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of an embodiment of a valve stuck handling apparatus;
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 obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the application provides a method for treating valve sticking, as shown in fig. 1, comprising the following steps:
s101, monitoring the current actual opening of the exhaust gas recirculation system valve of the target vehicle and the current target opening of the exhaust gas recirculation system valve in real time in the running process of the target vehicle.
The current target opening refers to an Electronic Control Unit (ECU) of the target vehicle, and the current target opening is a valve opening corresponding to a valve opening command of the exhaust gas recirculation system. And the current actual opening instruction refers to the actual opening of the valve of the current exhaust gas recirculation system after the valve receives the opening instruction.
It should be noted that, during the running process of the target vehicle, the intake air amount required by the engine is different due to different operation conditions, and therefore, the opening degree of the valve of the exhaust gas recirculation system is correspondingly different. The electronic control unit in the target vehicle calculates the current target opening of the exhaust gas recirculation system valve according to the current operating condition. And then sending the instruction of the current target opening degree to the valve of the exhaust gas recirculation system to control the valve to adjust the opening degree. And the current actual opening degree of the exhaust gas recirculation system valve can be acquired through the sensor.
S102, judging whether the exhaust gas recirculation system valve has a clamping stagnation fault or not based on the current actual opening and the current target opening of the exhaust gas recirculation system valve.
Because the current actual opening is the opening that the exhaust gas recirculation system valve is opened after receiving the instruction of the current target opening, when the exhaust gas recirculation system valve is stuck, the current actual opening of the exhaust gas recirculation system valve is theoretically consistent with the current target opening. However, when there is a sticking fault, there is a case where the current actual opening degree of the egr valve is greater than or less than the current target opening degree because the egr valve cannot be accurately adjusted to the current target opening degree. Therefore, whether the clamping stagnation fault exists in the exhaust gas recirculation system valve can be judged by comparing whether the current actual opening of the exhaust gas recirculation system valve is consistent with the current target opening.
If it is determined that the egr valve has a stuck fault, the stuck fault needs to be handled, so step S103 is executed at this time.
Optionally, in consideration of the influence of control errors, machining errors and other factors, in another embodiment of the present application, one specific implementation of step S102, as shown in fig. 2, includes the following steps:
s201, judging whether the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is larger than a preset threshold value or not.
Considering the influence of factors such as control error and machining error, when there is no sticking fault, the current actual opening of the exhaust gas recirculation system valve and the current target opening also have a certain error, so that the smaller error is reasonable and is not caused by the sticking. Therefore, in the embodiment of the present application, the step S202 is executed when the absolute value of the difference between the current actual opening degree and the current target opening degree of the exhaust gas recirculation system valve is judged to be greater than the preset threshold value. Step S203 is executed only when the absolute value of the difference between the current actual opening degree and the current target opening degree of the egr valve is determined to be not greater than the preset threshold.
S202, determining that the clamping stagnation fault exists in the valve of the exhaust gas recirculation system.
And S203, determining that the exhaust gas recirculation system valve has no clamping stagnation fault.
And S103, prompting the current driver of the target vehicle to stop and flameout.
Because it is determined that the exhaust gas recirculation system valve is stuck at this time, if the engine continues to operate normally, not only may there be insufficient power, but also there may be problems that the engine cannot ignite normally, and fuel does not reach the aftertreatment system through combustion, so that part of components are burned and damaged, and the like.
In addition, when the jamming fault of the exhaust gas recirculation system valve is processed in the follow-up process, the opening and closing of the exhaust gas recirculation system valve need to be controlled continuously, if the engine is not closed, the air inflow entering the engine is inconsistent with the actual requirement, and the problem of fuel combustion in the engine is seriously influenced. The subject vehicle is required to be currently shut down to be able to shut down the engine.
Optionally, the current driver of the target vehicle may be prompted to stop and shut down through an indicator light, that is, the current driver is prompted through the turning on of a specific indicator light that a stagnation fault exists at present in a valve of an egr system of the target vehicle, and the target vehicle needs to be stopped and shut down for automatic maintenance. Of course, the prompt information can also be directly fed back through the central control screen for reminding.
And S104, controlling the whole target vehicle to be electrified when the target vehicle is stopped and flameout is monitored.
It should be noted that, after step S103 is executed, the target vehicle may monitor whether the target vehicle has stopped and stalled in real time. When the target vehicle is monitored to be stopped and flamed out, logic for processing the stagnation fault is required to be executed subsequently, namely, a valve of the exhaust gas recirculation system is controlled, and after the valve of the exhaust gas recirculation system is subjected to fault elimination operation, whether the valve of the exhaust gas recirculation system is abnormal or not is detected again, and electric energy is required, so that the whole vehicle is required to be kept in a power-on state and cannot be powered off directly, and a diagnosis and repair mode is entered to diagnose and repair the stagnation fault. I.e., the current engine is stopped, the ECU and the exhaust gas recirculation system valves, etc., are powered by the battery of the subject vehicle to maintain normal operation of these devices.
And S105, repeatedly controlling the valve of the exhaust gas recirculation system to be opened to a target opening degree according to the target repeated control times, and closing the valve after the valve is continuously opened for a preset time length.
Wherein the EGR valve is vertically mounted on the target vehicle such that when the EGR valve is repeatedly controlled to open and close, foreign matter in the EGR valve falls out of the EGR valve under the action of gravity.
It should be noted that, in the embodiment of the present application, mainly by opening and closing the exhaust gas recirculation system valve for multiple times, the foreign matter in the stuck exhaust gas recirculation system valve may drop out under the action of gravity, so as to be discharged along with the airflow when the subsequent target vehicle runs. In the present embodiment, therefore, it is desirable that the egr valve be vertically mounted on the subject vehicle so that foreign matter is easily dropped out by gravity.
Alternatively, the mounting of the exhaust gas recirculation system valve is typically completely vertical, which is more conducive to foreign object fall-off. Of course, the exhaust gas recirculation system valve may be mounted at a certain angle in consideration of problems such as mounting of other components.
Specifically, because the foreign matter card is mainly the jamming between valve and valve body, so in this application embodiment, can control exhaust gas recirculation system valve and open to the target aperture to last preset time length, will control exhaust gas recirculation system valve again and close, with can give the foreign matter and drop and reserve sufficient time, then close after opening next time, so repeated many times. Therefore, the clamping foreign bodies can be loosened by opening and closing the clamping foreign bodies for many times, and then fall out under the action of gravity.
Alternatively, the target opening degree may be a dynamically changing value or a fixed value. The target opening degree is usually set to the maximum opening degree, so that the stuck foreign matters can be more favorably dropped. Specifically, when the target opening is the maximum opening, the step S105 is implemented by:
and according to the target repetitive control times, repeatedly controlling the valve of the exhaust gas recirculation system to be opened to the maximum opening degree, and closing the valve after the valve is continuously controlled for a preset time length.
Optionally, in another embodiment of the present application, a specific implementation manner of step S105, as shown in fig. 3, includes the following steps:
and S301, initializing the control times of the exhaust gas recirculation system valve to be zero.
In order to facilitate the recording of the number of opening and closing of the exhaust gas recirculation system valve, in the present embodiment the number of controls of the exhaust gas recirculation system valve is recorded and initialized to zero when the control is first started.
And S302, controlling the valve of the exhaust gas recirculation system to be opened to a target opening degree.
And S303, after the preset time duration, controlling the valve of the exhaust gas recirculation system to be closed.
And S304, adding one to the control times of the exhaust gas recirculation system valve.
And S305, judging whether the control frequency of the exhaust gas recirculation system valve is larger than the target repetitive control frequency.
If the control frequency of the exhaust gas recirculation system valve is not greater than the target repetitive control frequency, the operation returns to step S302. If the control frequency of the exhaust gas recirculation system valve is judged to be greater than the target repetitive control frequency, step S306 is executed.
S306, ending the circulation control of the exhaust gas recirculation system valve.
Similarly, the target repetitive control number may be a preset constant or a value that dynamically changes according to specific situations. Alternatively, in another embodiment of the present application, the target repetitive control number is a dynamically changing value, rather than a fixed constant, so that the target repetitive control number needs to be determined before step S105 is executed. As shown in fig. 4, a method for determining a number of target repetitive controls provided in an embodiment of the present application includes:
s401, searching a target preset difference range in which the absolute value of the difference between the current actual opening and the current target opening of the exhaust gas recirculation system valve is located from the preset difference ranges.
S402, determining the preset control times corresponding to the target preset difference value range as target repetitive control times.
The larger the limit value of the preset difference range is, the larger the corresponding preset control times is.
It should be noted that, since the larger the absolute value of the difference between the current actual opening degree and the current target opening degree of the exhaust gas recirculation system valve is, the more the sticking is serious, the more the number of times the repetitive control is required is. Therefore, in the embodiment of the present application, a plurality of preset difference value ranges are preset, and the preset control times corresponding to each preset difference value range are set, and the larger the limit value of the preset difference value range is, the larger the corresponding preset control times is.
Therefore, when the clamping stagnation is serious, repeated opening and closing can be carried out for a plurality of times, and the foreign matters can be ensured to fall off. When the clamping stagnation condition is slight, the foreign matters can fall off only by repeatedly opening and closing for a few times without repeated cycle control, so that the processing efficiency of the clamping stagnation fault can be improved.
And S106, sending an instruction for opening the target detection opening degree to the exhaust gas recirculation system valve, and acquiring the actual detection opening degree of the exhaust gas recirculation system valve.
It should be noted that, since there may be a case where the jamming fault is serious, the foreign object may not be dropped by a hundred percent by the above manner, so as to eliminate the jamming fault. Therefore, in order to avoid damage to the vehicle caused by the driver restarting the engine when the stuck fault is not eliminated, it is necessary to detect whether the exhaust gas recirculation system valve is stuck.
During the detection, the ECU sends an instruction to open the target detection opening degree to the egr valve. After receiving the instruction, the exhaust gas recirculation system valve is opened according to the instruction of the target detection opening degree. Correspondingly, the actual opening degree of the exhaust gas recirculation system valve at the moment is collected, and the actual detection opening degree is obtained. Step S107 is then performed based on the target detected opening and the actual detected opening of the egr valve.
Alternatively, the target detection opening may be the same as the current target opening acquired in step S101, so that whether a sticking fault still exists in the egr valve may be detected by the same opening. Of course, other opening degrees may be used, and for example, the opening degree may be a randomly generated opening degree or a predetermined fixed opening degree.
And S107, judging whether the clamping stagnation fault of the exhaust gas recirculation system valve is repaired or not based on the target detection opening and the actual detection opening of the exhaust gas recirculation system valve.
It should be noted that the specific determination manner in step S107 is the same as that in step S102, so that reference may be made to the implementation manner in step S102, and details are not repeated here.
If the stuck fault of the repaired exhaust gas recirculation system valve is determined, step S108 is executed.
Alternatively, considering that the stuck fault of the exhaust gas recirculation system valve still cannot be repaired by the above method, it is also necessary to inform the driver in time so as to perform the maintenance by a manual method, and therefore, in another embodiment of the present application, the method may further include:
and if the clamping stagnation fault of the exhaust gas recirculation system valve is not repaired, feeding back target alarm prompt information.
The target alarm prompt information is used for prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is not automatically repaired and needs to be manually maintained.
And S108, prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is repaired.
It should be noted that after the indication that the stuck fault of the exhaust gas recirculation system valve has been repaired, the target vehicle may end the entire vehicle power-on state. And the current driver can continue to normally start the vehicle to normally run. Because the whole process is relatively short, the vehicle can continue to run without delaying much time.
According to the valve jamming processing method, in the running process of a target vehicle, the current actual opening of the exhaust gas recirculation system valve of the target vehicle and the current target opening of the exhaust gas recirculation system valve are monitored in real time, so that whether jamming faults exist in the exhaust gas recirculation system valve or not can be judged based on the current actual opening and the current target opening of the exhaust gas recirculation system valve. When the jamming fault of the exhaust gas recirculation system valve is judged, the current driver of the target vehicle is prompted to stop and extinguish so as to avoid the problems that fuel enters the post-processing system to be combusted, parts of the post-processing system are burnt and damaged, and the like. And when the target vehicle is monitored to be stopped and flamed out, controlling the whole target vehicle to be electrified so that each part can work normally and execute subsequent operation. And then, according to the target repeated control times, repeatedly controlling the valve of the exhaust gas recirculation system to be opened to the target opening degree, and closing after the valve is continuously opened for a preset time length. Wherein, exhaust gas recirculation system valve is vertical to be installed on the target vehicle, so open and close exhaust gas recirculation system valve through repeated many times for the foreign matter of jamming is not hard up, and can drop out under the action of gravity. And then sending an instruction for opening the target detection opening degree to the exhaust gas recirculation system valve, acquiring the actual detection opening degree of the exhaust gas recirculation system valve, and judging whether the clamping failure of the exhaust gas recirculation system valve is repaired or not based on the target detection opening degree and the actual detection opening degree of the exhaust gas recirculation system valve. And finally, judging the clamping stagnation fault of the repaired exhaust gas recirculation system valve, and prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is repaired, so as to prevent a driver from restarting the vehicle when the driver does not repair the vehicle. Therefore, when the clamping stagnation fault of the valve of the exhaust gas recirculation system is monitored, the problems that fuel enters the post-processing system to burn, parts of the post-processing system are burnt, fused and damaged and the like can be effectively avoided, the clamping stagnation fault can be automatically and timely eliminated, and normal running of a vehicle can be quickly recovered.
Another embodiment of the present application provides a device for treating valve sticking, as shown in fig. 5, including:
the monitoring unit 501 is started for monitoring the current actual opening degree of the exhaust gas recirculation system valve of the target vehicle and the current target opening degree of the exhaust gas recirculation system valve in real time in the running process of the target vehicle.
The first determining unit 502 is configured to determine whether the egr valve has a stuck fault based on a current actual opening and a current target opening of the egr valve.
And the first prompting unit 503 is configured to prompt a current driver of the target vehicle to stop and shut down when the exhaust gas recirculation system valve is determined to have the stuck fault.
And the power-on control unit 504 is used for controlling the whole target vehicle to be kept powered on when the target vehicle is detected to be stopped and flameout.
And the valve control unit 505 is used for repeatedly controlling the valve of the exhaust gas recirculation system to be opened to the target opening degree according to the target repeated control times, and closing the valve after the valve is continuously opened for the preset time length. Wherein the EGR valve is vertically mounted on the target vehicle such that when the EGR valve is repeatedly controlled to open and close, foreign matter in the EGR valve falls out of the EGR valve under the action of gravity.
The detecting unit 506 is configured to send an instruction to open the target detection opening degree to the egr valve, and obtain an actual detection opening degree of the egr valve.
The second determining unit 507 is configured to determine whether the sticking fault of the egr valve has been repaired based on the target detected opening degree and the actual detected opening degree of the egr valve.
And a second prompting unit 508, configured to prompt that the sticking fault of the egr valve is repaired when the sticking fault of the egr valve is determined to be repaired.
Optionally, in a processing apparatus for valve sticking provided in another embodiment of the present application, the first determining unit includes:
the first judgment subunit is used for judging whether the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is larger than a preset threshold value or not.
The first determining unit is used for determining that the exhaust gas recirculation system valve has a clamping stagnation fault when the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be larger than a preset threshold value.
And the second determining unit is used for determining that the exhaust gas recirculation system valve has no clamping stagnation fault when the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be not greater than the preset threshold value.
Optionally, in a processing apparatus for valve sticking provided in another embodiment of the present application, the processing apparatus further includes:
and the feedback unit is used for feeding back target alarm prompt information when the clamping stagnation fault of the valve of the exhaust gas recirculation system is judged not to be repaired. The target alarm prompt information is used for prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is not automatically repaired and needs to be manually maintained.
Optionally, in a processing apparatus of valve sticking provided in another embodiment of the present application, the target opening is a maximum opening, and the valve control unit includes:
and the valve control subunit repeatedly controls the valve of the exhaust gas recirculation system to be opened to the maximum opening according to the target repeated control times, and closes after the valve is continuously opened for a preset time length.
Optionally, in a valve stuck processing apparatus provided in another embodiment of the present application, a valve control unit includes:
an initialization unit for initializing the number of controls of the exhaust gas recirculation system valve to zero.
And the valve opening unit is used for controlling the valve of the exhaust gas recirculation system to be opened to a target opening degree.
And the valve closing unit is used for controlling the valve of the exhaust gas recirculation system to be closed after the preset time duration.
And the accumulation unit is used for adding one to the control times of the valve of the exhaust gas recirculation system.
And the third judging unit is used for judging whether the control times of the exhaust gas recirculation system valve are larger than the target repetitive control times. If the control frequency of the exhaust gas recirculation system valve is judged to be not more than the target repetitive control frequency, the control unit returns to the valve opening unit to control the exhaust gas recirculation system valve to be opened to the target opening degree until the control frequency of the exhaust gas recirculation system valve is more than the target repetitive control frequency.
Optionally, in a processing apparatus for valve sticking provided in another embodiment of the present application, the processing apparatus further includes:
and the searching unit is used for searching a target preset difference value range in which the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is located from each preset difference value range.
And the frequency determining unit is used for determining the preset control frequency corresponding to the target preset difference value range as the target repetitive control frequency. The larger the limit value of the preset difference range is, the larger the corresponding preset control times is.
It should be noted that, for the specific working processes of each unit provided in the foregoing embodiments of the present application, reference may be made to the implementation processes of corresponding steps in the foregoing method embodiments, and details are not described here 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 configured to execute the program stored in the memory 601, and when the program is executed, the program is specifically configured to implement the method for handling valve sticking provided in any of the above embodiments.
Another embodiment of the present application provides a computer storage medium for storing a computer program, which when executed, is used to implement the method for processing valve stuck provided in any one 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 components 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 components and steps of the various examples 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 managing valve seizure, comprising:
monitoring the current actual opening of an exhaust gas recirculation system valve of a target vehicle and the current target opening of the exhaust gas recirculation system valve in real time in the running process of the target vehicle;
determining whether a sticking fault exists in the exhaust gas recirculation system valve based on the current actual opening and the current target opening of the exhaust gas recirculation system valve;
if the exhaust gas recirculation system valve is judged to have the clamping stagnation fault, prompting a current driver of the target vehicle to stop and flameout;
when the fact that the target vehicle is stopped and flamed out is monitored, controlling the whole target vehicle to be electrified;
repeatedly controlling the valve of the waste gas recirculation system to be opened to a target opening degree according to the target repeated control times, and closing the valve after the valve is continuously kept for a preset time length; wherein the EGR valve is vertically mounted on the target vehicle such that foreign matter in the EGR valve falls out of the EGR valve under the action of gravity when the EGR valve is repeatedly controlled to open and close;
sending an instruction for opening a target detection opening degree to the exhaust gas recirculation system valve, and acquiring an actual detection opening degree of the exhaust gas recirculation system valve;
determining whether a stuck fault of the EGR valve has been repaired based on the target detected opening and the actual detected opening of the EGR valve;
and if the clamping stagnation fault of the exhaust gas recirculation system valve is judged to be repaired, prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is repaired.
2. The method of claim 1, wherein the determining whether the exhaust gas recirculation system valve has a stuck fault based on the current actual opening and the current target opening of the exhaust gas recirculation system valve comprises:
judging whether the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is larger than a preset threshold value or not;
if the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be larger than a preset threshold value, determining that the exhaust gas recirculation system valve has a clamping stagnation fault;
and if the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be not larger than a preset threshold value, determining that the exhaust gas recirculation system valve has no clamping stagnation fault.
3. The method of claim 1, further comprising:
if the clamping stagnation fault of the exhaust gas recirculation system valve is judged not to be repaired, feeding back target alarm prompt information; the target alarm prompt information is used for prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is not automatically repaired and needs to be manually maintained.
4. The method according to claim 1, wherein the target opening degree is a maximum opening degree, and the repeatedly controlling the exhaust gas recirculation system valve to be opened to the target opening degree according to the target repeated control times and to be closed after continuing for a preset time period comprises:
and repeatedly controlling the valve of the waste gas recirculation system to be opened to the maximum opening degree according to the target repeated control times, and closing the valve after the valve is continuously opened for a preset time length.
5. The method according to claim 1, wherein the repeatedly controlling the exhaust gas recirculation system valve to be opened to a target opening degree according to a target repeated control number, and to be closed after a preset time duration, comprises:
initializing the number of controls of the exhaust gas recirculation system valve to zero;
controlling the exhaust gas recirculation system valve to be opened to the target opening degree;
after the preset time period, controlling the valve of the exhaust gas recirculation system to be closed;
adding one to the number of controls of the exhaust gas recirculation system valve;
judging whether the control times of the exhaust gas recirculation system valve are larger than the target repetitive control times or not;
and if the control frequency of the waste gas recirculation system valve is judged to be not more than the target repetitive control frequency, returning to control the waste gas recirculation system valve to be opened to the target opening degree until the control frequency of the waste gas recirculation system valve is more than the target repetitive control frequency.
6. The method of claim 1, wherein the repeatedly controlling the exhaust gas recirculation system valve to be opened to a target opening degree according to the target repeated control times and before being closed after the duration of a preset time period further comprises:
finding out a target preset difference range in which the absolute value of the difference between the current actual opening and the current target opening of the exhaust gas recirculation system valve is located from each preset difference range;
determining the preset control times corresponding to the target preset difference range as the target repetitive control times; and if the limit value of the preset difference range is larger, the corresponding preset control times are larger.
7. A valve sticking treatment apparatus, comprising:
the system comprises a starting monitoring unit, a control unit and a control unit, wherein the starting monitoring unit is used for monitoring the current actual opening of an exhaust gas recirculation system valve of a target vehicle and the current target opening of the exhaust gas recirculation system valve in real time in the running process of the target vehicle;
a first judging unit, configured to judge whether a sticking fault exists in the exhaust gas recirculation system valve based on the current actual opening and the current target opening of the exhaust gas recirculation system valve;
the first prompting unit is used for prompting a current driver of the target vehicle to stop and shut down when the exhaust gas recirculation system valve is judged to have the clamping stagnation fault;
the power-on control unit is used for controlling the whole target vehicle to be powered on when the target vehicle is monitored to be stopped and flameout;
the valve control unit is used for repeatedly controlling the valve of the waste gas recirculation system to be opened to a target opening degree according to the target repeated control times and to be closed after the valve is continuously opened for a preset time length; wherein the EGR valve is vertically mounted on the target vehicle such that foreign matter in the EGR valve falls out of the EGR valve under the action of gravity when the EGR valve is repeatedly controlled to open and close;
the detection unit is used for sending an instruction for opening a target detection opening degree to the exhaust gas recirculation system valve and acquiring an actual detection opening degree of the exhaust gas recirculation system valve;
a second determination unit configured to determine whether a sticking fault of the egr valve has been repaired based on the target detected opening degree and the actual detected opening degree of the egr valve;
and the second prompting unit is used for prompting that the clamping stagnation fault of the exhaust gas recirculation system valve is repaired when the clamping stagnation fault of the exhaust gas recirculation system valve is judged to be repaired.
8. The apparatus according to claim 7, wherein the first determining unit comprises:
a first judging subunit, configured to judge whether an absolute value of a difference between the current actual opening degree and the current target opening degree of the egr valve is greater than a preset threshold;
the first determining unit is used for determining that the exhaust gas recirculation system valve has a clamping stagnation fault when the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be larger than a preset threshold value;
and the second determination unit is used for determining that the exhaust gas recirculation system valve has no clamping stagnation fault when the absolute value of the difference value between the current actual opening and the current target opening of the exhaust gas recirculation system valve is judged to be not greater than a preset threshold value.
9. An electronic device, comprising:
a memory and a processor;
wherein the memory is used for storing programs;
the processor is configured to execute the program, which when executed is configured to implement the method of handling valve sticking as claimed in any one of claims 1 to 6.
10. A computer storage medium storing a computer program which, when executed, implements a method of handling valve sticking as claimed in any one of claims 1 to 6.
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| CN202211261212.6A CN115324755B (en) | 2022-10-14 | 2022-10-14 | Valve jamming processing method and device, electronic equipment and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116291922A (en) * | 2023-05-11 | 2023-06-23 | 潍柴动力股份有限公司 | Engine control method, engine control device, electronic equipment, storage medium and engine |
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| CN113187629A (en) * | 2021-03-29 | 2021-07-30 | 广西玉柴机器股份有限公司 | Method and device for processing state of EGR valve |
| CN114320678A (en) * | 2021-10-29 | 2022-04-12 | 东风商用车有限公司 | EGR valve clamping stagnation diagnosis solving device and using method thereof |
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| US6213446B1 (en) * | 1998-01-16 | 2001-04-10 | Pierburg Ag | Exhaust gas recirculation valve having means to free a stuck valve member |
| CN112443430A (en) * | 2019-08-28 | 2021-03-05 | 长城汽车股份有限公司 | Repair method and repair device for exhaust gas recirculation valve and vehicle |
| CN113187629A (en) * | 2021-03-29 | 2021-07-30 | 广西玉柴机器股份有限公司 | Method and device for processing state of EGR valve |
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