CN115013152A - DOC inlet high-temperature alarm method, device, equipment and readable storage medium - Google Patents
DOC inlet high-temperature alarm method, device, equipment and readable storage medium Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/089—Safety, indicating, or supervising devices relating to engine temperature
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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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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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
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Abstract
The invention discloses a DOC inlet high-temperature alarm method, a device, equipment and a readable storage medium, and relates to the technical field of engine DOC high-temperature alarm, wherein the method comprises the following steps: step S10, obtaining DOC inlet temperature and engine power continuously according to a preset period; step S20, sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power; step S30, calculating corresponding window temperature according to DOC inlet temperature in each temperature calculation window; and step S40, if the temperatures of the windows of the continuous preset number are all larger than the preset temperature threshold value, performing DOC inlet high temperature alarm. According to the invention, the DOC inlet temperature and the engine power which are continuously acquired in the preset period are subjected to fusion calculation, so that the high temperature of the DOC inlet can be accurately alarmed, the damage of parts of the DOC due to abnormal high temperature is avoided, and the technical problem of false alarm in the conventional scheme of high temperature monitoring through the temperature sensor of the DOC inlet can be solved.
Description
Technical Field
The invention relates to the technical field of DOC (document management) high-temperature alarm of an engine, in particular to a DOC inlet high-temperature alarm method, a DOC inlet high-temperature alarm device, DOC inlet high-temperature alarm equipment and a readable storage medium.
Background
An Oxidation-type catalytic converter (doc) is a device installed in an engine exhaust line to convert carbon monoxide (CO) and Hydrocarbons (HC) in engine exhaust into harmless water (H20) and carbon dioxide (CO2) by Oxidation reaction.
The DOC is required to monitor the DOC inlet temperature for high-temperature alarm because the DOC is required to receive exhaust gas from an engine, the inlet temperature of the DOC is increased, and the excessive temperature can damage parts. The temperature sensor that prior art mainly passes through the DOC entry carries out high temperature monitoring, however, temperature sensor often can appear monitoring data sudden change because of external disturbance, the condition of wrong high temperature warning appears.
Disclosure of Invention
The embodiment of the invention provides a DOC inlet high-temperature alarm method, a DOC inlet high-temperature alarm device, DOC inlet high-temperature alarm equipment and a readable storage medium, and aims to solve the technical problem that false alarm exists when a temperature sensor of a DOC inlet is used for carrying out high-temperature monitoring in the related technology.
In a first aspect, a DOC inlet high temperature alarm method is provided, and is characterized by comprising the following steps:
continuously acquiring DOC inlet temperature and engine power according to a preset period;
sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power;
calculating corresponding window temperature according to DOC inlet temperature in each temperature calculation window;
and if the temperatures of the windows with the continuously preset number are all larger than the preset temperature threshold value, carrying out DOC inlet high-temperature alarm.
In some embodiments, the step of sequentially determining a plurality of temperature calculation windows based on continuously captured engine power comprises:
sequentially accumulating the engine power from the first engine power until the accumulated value is larger than a preset power threshold value, and recording the accumulated value as a first temperature calculation window;
accumulating the engine powers in sequence from the second engine power until the accumulated value is larger than a preset power threshold value, and recording the accumulated value as a second temperature calculation window;
and determining a plurality of temperature calculation windows by analogy.
In some embodiments, the step of calculating the corresponding window temperature according to the DOC inlet temperature continuously acquired in each temperature calculation window includes:
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the first temperature calculation window are all larger than TC1, the window temperature of the first temperature calculation window is TC 1;
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the second temperature calculation window are all larger than TC2, the window temperature of the second temperature calculation window is TC 2;
and calculating the window temperature corresponding to each temperature calculation window by analogy.
In some embodiments, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm includes:
the method comprises the steps of obtaining a combustion mode of the engine, and determining a preset temperature threshold according to the combustion mode.
In some embodiments, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm further includes:
sending DOC inlet high-temperature alarm information and maintenance suggestions to a client, wherein the maintenance suggestions are ECU power supply inspection, connection wire harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection in sequence.
In some embodiments, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm further includes:
and determining a preset number m according to a formula m which is more than or equal to 60/t, wherein t is a preset period.
In some embodiments, after the DOC entrance high temperature alarm is performed, if the temperatures of the windows of the continuous preset number are all smaller than the preset temperature threshold value, the DOC entrance high temperature alarm is released.
In a second aspect, a DOC entrance high temperature alarm device is provided, which comprises:
the acquisition unit is used for continuously acquiring DOC inlet temperature and engine power in a preset period;
a determination unit for sequentially determining a plurality of temperature calculation windows according to engine power continuously acquired;
the calculation unit is used for calculating corresponding window temperature according to DOC inlet temperature in each temperature calculation window;
and the alarm unit is used for carrying out DOC inlet high-temperature alarm if the temperatures of the windows with the continuous preset number are all greater than a preset temperature threshold value.
In a third aspect, a computer device is provided, comprising: the DOC inlet high-temperature alarm system comprises a memory and a processor, wherein at least one instruction is stored in the memory, and is loaded and executed by the processor so as to realize the DOC inlet high-temperature alarm method.
In a fourth aspect, a computer-readable storage medium is provided, which stores computer instructions that, when executed by a computer, cause the computer to perform the DOC entrance high temperature alarm method as described above.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a DOC inlet high-temperature alarm method, a DOC inlet high-temperature alarm device, DOC inlet high-temperature alarm equipment and a readable storage medium. According to the invention, the DOC inlet temperature and the engine power which are continuously acquired in the preset period are subjected to fusion calculation, so that the high temperature of the DOC inlet can be accurately alarmed, the damage of parts of the DOC due to abnormal high temperature is avoided, and the technical problem of false alarm in the conventional scheme of high temperature monitoring through the temperature sensor of the DOC inlet can be solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a DOC inlet high temperature alarm method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the implementation step S20 according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of the implementation of step S30 according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a DOC inlet high temperature alarm device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a DOC inlet high-temperature alarm method which can solve the technical problem of false alarm in the prior art when a temperature sensor of a DOC inlet is used for high-temperature monitoring.
Referring to fig. 1, an embodiment of the present invention provides a DOC inlet high temperature alarm method, including the following steps:
and step S10, continuously acquiring DOC inlet temperature and engine power according to a preset period.
Specifically, the preset period is T seconds, and the DOC inlet temperature and the engine power under different working conditions are acquired and obtained every T seconds and are respectively marked as P1, P2, …, T1, T2 and ….
In step S20, a plurality of temperature calculation windows are sequentially determined according to the engine power that is continuously acquired.
Specifically, the step of sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power comprises the following steps:
and accumulating the engine power from the first engine power P1 until the accumulated value is larger than the preset power threshold value P, and recording the accumulated value as a first temperature calculation window. If P1+ P2+ … + Pi > P, the first temperature calculation window is recorded from the first engine power P1 to the ith engine power Pi.
And accumulating the engine power from the second engine power P2 in sequence until the accumulated value is greater than the preset power threshold value P, and recording the accumulated value as a second temperature calculation window. Similarly, if P2+ … + Pj > P, then the second temperature calculation window is recorded from the first engine power P2 until the jth engine power Pj, as shown in FIG. 2.
And determining a plurality of temperature calculation windows by analogy.
And step S30, calculating corresponding window temperature according to the DOC inlet temperature in each temperature calculation window.
Specifically, the step of calculating the corresponding window temperature according to the DOC inlet temperature continuously acquired in each temperature calculation window includes:
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the first temperature calculation window are all larger than TC1, the window temperature of the first temperature calculation window is TC 1. Referring to fig. 3, the DOC inlet temperatures in the first temperature calculation window are arranged from large to small, and the temperature values exceeding a preset percentage (which may be 90%) are all greater than TC1, so that the window temperature of the first temperature calculation window is TC 1.
If the DOC inlet temperature values in the second temperature calculation window exceeding the preset percentage are all larger than TC2, the window temperature of the second temperature calculation window is TC 2. Similarly, the DOC inlet temperatures in the second temperature calculation window are arranged from large to small, and the temperature values exceeding the preset percentage (which may be 90%) are all greater than TC2, so the window temperature of the first temperature calculation window is TC 2.
By analogy, the window temperature corresponding to each temperature calculation window is calculated and can be recorded as TC1, TC2 and ….
And step S40, if the temperatures of the windows of the continuous preset number are all larger than the preset temperature threshold value, performing DOC inlet high temperature alarm.
Specifically, if the window temperatures of the continuous preset number are all greater than the preset temperature threshold, the DOC entrance high temperature alarm step is performed, and the DOC entrance high temperature alarm step includes:
and determining the preset number m according to the formula m being more than or equal to 60/t.
For example, if the preset period is 1 second, i.e. t is 1, m is greater than or equal to 60, and m is 60, if the temperatures of 60 continuous windows are greater than the preset temperature threshold (600 ℃ may be adopted), the DOC entrance high temperature alarm is performed.
Furthermore, after the DOC entrance high-temperature alarm is carried out, if the temperatures of the windows with the continuously preset number are all smaller than the preset temperature threshold value, the DOC entrance high-temperature alarm is released, and the long-time alarm is avoided.
According to the DOC inlet high-temperature alarm method in the embodiment of the invention, firstly, the DOC inlet temperature and the engine power are continuously obtained according to a preset period, then, a plurality of temperature calculation windows are sequentially determined according to the continuously obtained engine power, the corresponding window temperature is calculated according to the DOC inlet temperature in each temperature calculation window, and finally, the DOC inlet high-temperature alarm is carried out when the temperatures of the windows in the continuous preset number are all larger than the preset temperature threshold value. According to the invention, the DOC inlet temperature and the engine power which are continuously acquired in the preset period are subjected to fusion calculation, so that the high temperature of the DOC inlet can be accurately alarmed, the damage of parts of the DOC due to abnormal high temperature is avoided, and the technical problem of false alarm in the conventional scheme of high temperature monitoring through the temperature sensor of the DOC inlet can be solved.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm further includes:
the method comprises the steps of obtaining a combustion mode of the engine, and determining a preset temperature threshold according to the combustion mode.
The DOC inlet temperature can be influenced by the combustion mode of the engine, the combustion mode can be simply divided into a regeneration mode and a non-regeneration mode, the exhaust temperature of the engine in the regeneration mode is higher than that in the non-regeneration mode, different preset temperature thresholds are defined according to different combustion modes, and the accuracy of high-temperature alarm can be improved.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm further includes:
sending DOC inlet high-temperature alarm information and maintenance suggestions to a client, wherein the maintenance suggestions are ECU power supply inspection, connection wire harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection in sequence.
When a DOC entrance high-temperature event occurs in a vehicle of a user, the client of the user receives DOC entrance high-temperature alarm information and a plurality of maintenance suggestions and reminds the user that the DOC entrance is high in temperature and possibly damages parts and requires maintenance.
The method comprises the following steps of sequentially carrying out ECU power supply inspection, connection wire harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection, and specifically comprises the following steps:
A. ECU Power supply inspection
Turning off a key switch of the vehicle and waiting for two minutes;
check if the high temperature alarm is still present:
if yes, carrying out the next inspection;
if not, the vehicle key switch is turned on to eliminate the fault.
B. Inspection of connecting harness
Closing a vehicle key switch;
it is checked whether the ECU external fuse is damaged,
pulling the connector, and observing whether the power supply terminal of the ECU is damaged;
observing whether each connector of the ECU is normally installed;
check if the high temperature alarm is still present:
if yes, carrying out the next inspection;
if not, the vehicle key switch is turned on to eliminate the fault.
C. DOC inlet sensor hardware inspection
Turning off a key switch of the vehicle and waiting for two minutes;
checking whether the DOC inlet temperature sensor is damaged or not;
checking whether a DOC inlet temperature sensor connector is loosened;
whether the key is electrified and the high-temperature alarm exists or not:
if yes, carrying out the next inspection;
if not, the vehicle key switch is turned on to eliminate the fault.
D. Throttle check
Closing a vehicle key switch;
checking whether the throttle valve wire harness is damaged or not;
checking whether the connector of the throttle valve is loose;
checking whether the throttle valve plate is stuck or not;
whether the key is electrified and the high-temperature alarm exists or not:
if yes, carrying out the next inspection;
if not, the vehicle key switch is turned on to eliminate the fault.
E. EGR valve check
Closing a vehicle key switch;
checking whether the EGR valve wire harness is damaged or not;
checking whether the EGR valve plug-in connector is loosened;
checking whether the EGR valve plate is stuck;
whether the key power-on alarm exists or not:
if yes, carrying out the next inspection;
if not, the vehicle key switch is turned on to eliminate the fault.
F. Supercharger inspection
Closing a vehicle key switch;
checking whether the supercharger wire harness is damaged or not;
checking whether a connector of the supercharger is loosened;
checking whether the supercharger vanes are worn or stuck;
whether the key is electrified and the high-temperature alarm exists or not:
if yes, carrying out the next inspection;
if not, the vehicle key switch is turned on to eliminate the fault.
Referring to fig. 4, an embodiment of the present invention further provides a DOC inlet high temperature alarm device, which is characterized by including: the device comprises an acquisition unit, a determination unit, a calculation unit and an alarm unit.
The acquisition unit is used for continuously acquiring DOC inlet temperature and engine power in a preset period.
Specifically, the preset period is T seconds, and the DOC inlet temperature and the engine power under different working conditions are acquired and obtained every T seconds and are respectively marked as P1, P2, …, T1, T2 and ….
The determination unit is used for sequentially determining a plurality of temperature calculation windows according to continuously acquired engine power.
Specifically, the sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power comprises the following steps:
and accumulating the engine power from the first engine power P1 until the accumulated value is larger than the preset power threshold value P, and recording the accumulated value as a first temperature calculation window. If P1+ P2+ … + Pi > P, the first temperature calculation window is recorded from the first engine power P1 to the ith engine power Pi.
And accumulating the engine power from the second engine power P2 in sequence until the accumulated value is greater than the preset power threshold value P, and recording the accumulated value as a second temperature calculation window. Similarly, if P2+ … + Pj > P, then the second temperature calculation window is recorded from the first engine power P2 until the jth engine power Pj, as shown in FIG. 2.
And determining a plurality of temperature calculation windows by analogy.
And the calculating unit is used for calculating the corresponding window temperature according to the DOC inlet temperature in each temperature calculating window.
Specifically, the calculating the corresponding window temperature according to the DOC inlet temperature continuously acquired in each temperature calculation window includes:
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the first temperature calculation window are all larger than TC1, the window temperature of the first temperature calculation window is TC 1. Referring to fig. 3, the DOC inlet temperatures in the first temperature calculation window are arranged from large to small, and the temperature values exceeding a preset percentage (which may be 90%) are all greater than TC1, so that the window temperature of the first temperature calculation window is TC 1.
If the DOC inlet temperature values in the second temperature calculation window exceeding the preset percentage are all larger than TC2, the window temperature of the second temperature calculation window is TC 2. Similarly, the DOC inlet temperatures in the second temperature calculation window are arranged from large to small, and the temperature values exceeding the preset percentage (which may be 90%) are all greater than TC2, so the window temperature of the first temperature calculation window is TC 2.
By analogy, the window temperature corresponding to each temperature calculation window is calculated and can be recorded as TC1, TC2 and ….
And the alarm unit is used for carrying out DOC inlet high-temperature alarm if the temperatures of the windows with the continuous preset number are all greater than a preset temperature threshold value.
Specifically, if the window temperature of the continuous preset number is greater than the preset temperature threshold, then DOC entrance high temperature alarm is carried out, including:
and determining the preset number m according to the formula m being more than or equal to 60/t.
For example, if the preset period is 1 second, i.e. t is 1, m is greater than or equal to 60, and m is 60, if the temperatures of 60 continuous windows are greater than the preset temperature threshold (600 ℃ may be adopted), the DOC entrance high temperature alarm is performed.
Furthermore, after the DOC entrance high-temperature alarm is carried out, if the temperatures of the windows with the continuously preset number are all smaller than the preset temperature threshold value, the DOC entrance high-temperature alarm is released, and the long-time alarm is avoided.
According to the DOC inlet high-temperature alarm device in the embodiment of the invention, firstly, the DOC inlet temperature and the engine power are continuously obtained according to a preset period, then, a plurality of temperature calculation windows are sequentially determined according to the continuously obtained engine power, the corresponding window temperature is calculated according to the DOC inlet temperature in each temperature calculation window, and finally, the DOC inlet high-temperature alarm is carried out when the temperatures of the windows in a continuously preset number are all larger than a preset temperature threshold value. According to the invention, the DOC inlet temperature and the engine power are subjected to fusion calculation, so that the high temperature at the DOC inlet can be accurately alarmed, the damage of parts caused by abnormal high temperature of the DOC is avoided, and the technical problem of false alarm in the conventional scheme of high temperature monitoring through the temperature sensor at the DOC inlet can be solved.
As an optional implementation manner, in an embodiment of the present invention, the alarm unit is further configured to:
the method comprises the steps of obtaining a combustion mode of the engine, and determining a preset temperature threshold according to the combustion mode.
The DOC inlet temperature can be influenced by the combustion mode of the engine, the combustion mode can be simply divided into a regeneration mode and a non-regeneration mode, the exhaust temperature of the engine in the regeneration mode is higher than that in the non-regeneration mode, different preset temperature thresholds are defined according to different combustion modes, and the accuracy of high-temperature alarm can be improved.
As an optional implementation manner, in an embodiment of the present invention, the alarm unit is further configured to:
sending DOC inlet high-temperature alarm information and maintenance suggestions to a client, wherein the maintenance suggestions are ECU power supply inspection, connection wire harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection in sequence.
It should be noted that, as will be clear to those skilled in the art, for convenience and brevity of description, the specific working processes of the above-described apparatus and each unit may refer to the corresponding processes in the foregoing DOC entrance high temperature alarm method embodiment, and are not described herein again.
The DOC inlet high temperature alarm device provided by the above embodiment may be implemented in the form of a computer program, and the computer program may be run on a computer device as shown in fig. 5.
An embodiment of the present invention further provides a computer device, including: the DOC entrance high-temperature alarm method comprises a memory, a processor and a network interface which are connected through a system bus, wherein at least one instruction is stored in the memory, and the at least one instruction is loaded and executed by the processor so as to realize all steps or part of steps of the DOC entrance high-temperature alarm method.
The network interface is used for performing network communication, such as sending assigned tasks. Those skilled in the art will appreciate that the configuration shown in fig. 5 is a block diagram of only a portion of the configuration associated with aspects of the present invention and is not intended to limit the computing devices to which aspects of the present invention may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
The Processor may be a CPU, other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the computer device by running or executing the computer programs and/or modules stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a video playing function, an image playing function, etc.), and the like; the storage data area may store data (such as video data, image data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, in one embodiment, the processor is configured to execute a computer program stored in the memory to implement the steps of:
and step S10, continuously acquiring DOC inlet temperature and engine power according to a preset period.
In step S20, a plurality of temperature calculation windows are sequentially determined according to the engine power that is continuously acquired.
And step S30, calculating corresponding window temperature according to the DOC inlet temperature in each temperature calculation window.
And step S40, if the temperatures of the windows of the continuous preset number are all larger than the preset temperature threshold value, performing DOC inlet high temperature alarm.
As an alternative implementation, in one embodiment of the invention, the step of sequentially determining a plurality of temperature calculation windows based on the continuously acquired engine power comprises:
sequentially accumulating the engine power from the first engine power until the accumulated value is larger than a preset power threshold value, and recording the accumulated value as a first temperature calculation window;
accumulating the engine powers in sequence from the second engine power until the accumulated value is larger than a preset power threshold value, and recording the accumulated value as a second temperature calculation window;
and determining a plurality of temperature calculation windows by analogy.
As an optional implementation manner, in an embodiment of the present invention, the step of calculating a corresponding window temperature according to the DOC inlet temperature continuously acquired in each temperature calculation window includes:
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the first temperature calculation window are all larger than TC1, the window temperature of the first temperature calculation window is TC 1;
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the second temperature calculation window are all larger than TC2, the window temperature of the second temperature calculation window is TC 2;
and calculating the window temperature corresponding to each temperature calculation window by analogy.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm includes:
the method comprises the steps of obtaining a combustion mode of the engine, and determining a preset temperature threshold according to the combustion mode.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm further includes:
sending DOC inlet high-temperature alarm information and maintenance suggestions to a client, wherein the maintenance suggestions are ECU power supply inspection, connection wire harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection in sequence.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the consecutive preset number of windows are all greater than the preset temperature threshold, the step of performing DOC entrance high temperature alarm further includes:
and determining a preset number m according to a formula m which is more than or equal to 60/t, wherein t is a preset period.
As an optional implementation manner, in an embodiment of the present invention, after the DOC entrance high temperature alarm is performed, if the temperatures of the consecutive preset number of windows are all smaller than the preset temperature threshold, the DOC entrance high temperature alarm is released.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements all or part of the steps of the DOC entrance high temperature alarm method.
Embodiments of the present invention may implement all or part of the foregoing processes, or may be implemented by a computer program instructing related hardware, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the foregoing methods may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U-disk, removable hard disk, magnetic disk, optical disk, computer memory, Read-Only memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers in the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. 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 invention. Thus, the present invention 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 DOC inlet high-temperature alarm method is characterized by comprising the following steps:
continuously acquiring DOC inlet temperature and engine power according to a preset period;
sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power;
calculating corresponding window temperature according to DOC inlet temperature in each temperature calculation window;
and if the temperatures of the windows with the continuously preset number are all larger than the preset temperature threshold value, carrying out DOC inlet high-temperature alarm.
2. The DOC inlet high temperature warning method of claim 1, wherein the step of sequentially determining a plurality of temperature calculation windows according to the continuously obtained engine power comprises:
accumulating the engine power from the first engine power in sequence until the accumulated value is larger than a preset power threshold value, and recording the accumulated value as a first temperature calculation window;
sequentially accumulating the engine powers from the second engine power until the accumulated value is larger than a preset power threshold value, and recording the accumulated value as a second temperature calculation window;
and determining a plurality of temperature calculation windows by analogy.
3. The DOC inlet high temperature alarm method according to claim 2, wherein the step of calculating the corresponding window temperature according to the DOC inlet temperature continuously acquired in each temperature calculation window comprises:
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the first temperature calculation window are all larger than TC1, the window temperature of the first temperature calculation window is TC 1;
if the temperature values exceeding the preset percentage in the DOC inlet temperature in the second temperature calculation window are all larger than TC2, the window temperature of the second temperature calculation window is TC 2;
and calculating the window temperature corresponding to each temperature calculation window by analogy.
4. The DOC inlet high temperature alarm method according to claim 1, wherein if the temperatures of the consecutive preset number of windows are greater than a preset temperature threshold, the DOC inlet high temperature alarm step includes:
the method comprises the steps of obtaining a combustion mode of the engine, and determining a preset temperature threshold according to the combustion mode.
5. The DOC inlet high temperature alarm method according to claim 1, wherein if the temperatures of the consecutive preset number of windows are greater than a preset temperature threshold, the DOC inlet high temperature alarm step is performed, further comprising:
sending DOC entry high temperature alarm information and maintenance advice to the client, the maintenance advice is for carrying out ECU power supply inspection, connection harness inspection, DOC entry sensor hardware inspection, throttle valve inspection, EGR valve inspection and booster inspection in proper order.
6. The DOC inlet high temperature alarm method according to claim 1, wherein if the temperatures of the consecutive preset number of windows are greater than a preset temperature threshold, the DOC inlet high temperature alarm step is performed, further comprising:
and determining a preset number m according to a formula m which is more than or equal to 60/t, wherein t is a preset period.
7. The DOC inlet high temperature alarm method of claim 1, wherein:
after the DOC entrance high-temperature alarm is carried out, if the temperatures of the windows with the continuous preset number are all smaller than the preset temperature threshold value, the DOC entrance high-temperature alarm is released.
8. A DOC inlet high temperature alarm device is characterized by comprising:
the acquisition unit is used for continuously acquiring DOC inlet temperature and engine power in a preset period;
a determination unit for sequentially determining a plurality of temperature calculation windows according to engine power continuously acquired;
the calculation unit is used for calculating corresponding window temperature according to DOC inlet temperature in each temperature calculation window;
and the alarm unit is used for carrying out DOC inlet high-temperature alarm if the temperatures of the windows with the continuous preset number are all greater than a preset temperature threshold value.
9. A computer device, comprising: a memory and a processor, the memory having stored therein at least one instruction, the at least one instruction being loaded and executed by the processor to implement the DOC inlet high temperature warning method of any one of claims 1 to 7.
10. A computer-readable storage medium characterized by: the computer storage medium stores computer instructions that, when executed by a computer, cause the computer to perform the DOC inlet high temperature alarm method of any one of claims 1 to 7.
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