CN115013152B - DOC inlet high-temperature alarm method, DOC inlet high-temperature alarm device, DOC inlet high-temperature alarm equipment and DOC inlet high-temperature alarm readable storage medium - Google Patents
DOC inlet high-temperature alarm method, DOC inlet high-temperature alarm device, DOC inlet high-temperature alarm equipment and DOC inlet high-temperature alarm readable storage medium Download PDFInfo
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- CN115013152B CN115013152B CN202210771330.5A CN202210771330A CN115013152B CN 115013152 B CN115013152 B CN 115013152B CN 202210771330 A CN202210771330 A CN 202210771330A CN 115013152 B CN115013152 B CN 115013152B
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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, continuously acquiring the DOC inlet temperature and the engine power 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 the corresponding window temperature according to the DOC inlet temperature in each temperature calculation window; and S40, if the temperatures of the windows with the continuous preset number are all larger than the preset temperature threshold, carrying out DOC inlet high-temperature alarm. According to the method, the DOC inlet temperature and the engine power which are continuously acquired in the preset period are subjected to fusion calculation, the high temperature of 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 that the temperature sensor of the DOC inlet is used for carrying out high temperature monitoring and error alarm in the traditional scheme can be solved.
Description
Technical Field
The invention relates to the technical field of DOC high-temperature alarm of engines, 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 DOC inlet high-temperature alarm device.
Background
An oxidation catalytic converter, abbreviated as DOC (Diesel Oxidation Catalyst), is a device installed in an engine exhaust line to convert carbon monoxide (CO) and Hydrocarbons (HC) in engine exhaust gas into harmless water (H20) and carbon dioxide (CO 2) through an oxidation reaction.
The DOC requires monitoring the DOC inlet temperature for high temperature alarms because it receives exhaust from the engine and the inlet temperature increases and excessive temperatures damage components. In the prior art, high-temperature monitoring is mainly performed through a temperature sensor at the DOC inlet, however, the temperature sensor often has abrupt change of monitoring data due to external interference, and has false high-temperature alarm.
Disclosure of Invention
The embodiment of the invention provides a DOC inlet high-temperature alarm method, a device, equipment and a readable storage medium, which are used for solving the technical problem that the temperature sensor of the DOC inlet is used for high-temperature monitoring and false alarm exists in the related technology.
In a first aspect, a DOC inlet high temperature alarm method is provided, which is characterized by comprising the following steps:
continuously acquiring the DOC inlet temperature and the engine power according to a preset period;
sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power;
calculating the corresponding window temperature according to the DOC inlet temperature in each temperature calculation window;
and if the temperatures of the windows with the continuous preset number are all larger than the preset temperature threshold, carrying out DOC inlet high-temperature alarm.
In some embodiments, the step of sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power includes:
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;
sequentially accumulating the engine power 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 so on, a plurality of temperature calculation windows are determined.
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 TC1;
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 TC2;
and by analogy, calculating the window temperature corresponding to each temperature calculation window.
In some embodiments, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry high-temperature alarm includes:
and acquiring 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 windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry high-temperature alarm further includes:
and sending DOC inlet high-temperature alarm information and maintenance advice to a client, wherein the maintenance advice is used for sequentially performing ECU power supply inspection, connection harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection.
In some embodiments, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry 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 inlet high temperature alarm is performed, if the continuous preset number of window temperatures are all smaller than the preset temperature threshold, the DOC inlet high temperature alarm is released.
In a second aspect, there is provided a DOC inlet high temperature alarm apparatus, comprising:
the acquisition unit is used for continuously acquiring the DOC inlet temperature and the engine power in a preset period;
the determining unit is used for sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power;
the calculation unit is used for calculating the corresponding window temperature according to the 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 larger than the preset temperature threshold value.
In a third aspect, there is provided a computer device 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 the at least one instruction 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, the computer storage medium storing computer instructions that, when executed by a computer, cause the computer to perform the DOC inlet high temperature alarm method 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 device, equipment and a readable storage medium, wherein the DOC inlet temperature and engine power are continuously acquired according to a preset period, a plurality of temperature calculation windows are sequentially determined according to the continuously acquired 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 if the window temperatures of the continuously preset number are all larger than a preset temperature threshold. According to the method, the DOC inlet temperature and the engine power which are continuously acquired in the preset period are subjected to fusion calculation, the high temperature of 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 that the temperature sensor of the DOC inlet is used for carrying out high temperature monitoring and error alarm in the traditional scheme can be solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
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 implementation step S20 according to an embodiment of the present invention;
fig. 3 is a schematic diagram of implementation step S30 according to an 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
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a DOC inlet high-temperature alarm method, which can solve the technical problem that the prior art carries out high-temperature monitoring through a temperature sensor of a DOC inlet and has false alarm.
Referring to fig. 1, an embodiment of the invention provides a DOC inlet high temperature alarm method, which includes the following steps:
step S10, continuously acquiring the DOC inlet temperature and the engine power according to a preset period.
Specifically, the preset period is T seconds, and DOC inlet temperature and engine power under different working conditions are acquired and obtained every T seconds, and are respectively recorded as P1, P2 and …, and T1, T2 and ….
Step S20, sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power.
Specifically, the step of sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power includes:
the engine power is accumulated sequentially from the first engine power P1 until the accumulated value is larger than the preset power threshold value P, and the accumulated value is recorded 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 i-th engine power Pi.
And sequentially accumulating the engine power from the second engine power P2 until the accumulated value is larger than the preset power threshold value P, and recording the accumulated value as a second temperature calculation window. Similarly, if p2+ … +pj > P, the second temperature calculation window is recorded from the first engine power P2 to the jth engine power Pj, as shown in fig. 2.
And so on, a plurality of temperature calculation windows are determined.
Step S30, calculating the 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 TC1. 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 TC1.
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 TC2. And arranging the DOC inlet temperature in the second temperature calculation window from large to small, wherein the temperature values exceeding a preset percentage (which can be 90%) are all larger than TC2, and the window temperature of the first temperature calculation window is TC2.
By analogy, the window temperature corresponding to each temperature calculation window is calculated and can be recorded as TC1, TC2 and ….
And S40, if the temperatures of the windows with the continuous preset number are all larger than the preset temperature threshold, carrying out DOC inlet high-temperature alarm.
Specifically, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, performing DOC inlet high-temperature alarm, including:
and determining the preset number m according to the formula m which is more than or equal to 60/t.
For example, assuming that the preset period is 1 second, i.e. t is 1, m is greater than or equal to 60, m=60, if the temperatures of 60 continuous windows are all greater than the preset temperature threshold (600 ℃ is preferable), DOC entrance high-temperature alarm is performed.
Further, after the DOC inlet high-temperature alarm is carried out, if the temperatures of the windows with the continuous preset number are smaller than the preset temperature threshold, the DOC inlet high-temperature alarm is released, and long-time alarm is avoided.
According to the DOC inlet high-temperature alarm method, firstly, the DOC inlet temperature and the engine power are continuously acquired according to a preset period, then a plurality of temperature calculation windows are sequentially determined according to the continuously acquired 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 if the window temperatures of the continuous preset number are all larger than a preset temperature threshold value. According to the method, the DOC inlet temperature and the engine power which are continuously acquired in the preset period are subjected to fusion calculation, the high temperature of 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 that the temperature sensor of the DOC inlet is used for carrying out high temperature monitoring and error alarm in the traditional scheme can be solved.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry high temperature alarm further includes:
and acquiring 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 engine combustion mode, 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 windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry high temperature alarm further includes:
and sending DOC inlet high-temperature alarm information and maintenance advice to a client, wherein the maintenance advice is used for sequentially performing ECU power supply inspection, connection harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection.
When the DOC inlet high temperature event occurs to the user vehicle, the user client receives the DOC inlet high temperature alarm information and a plurality of maintenance suggestions, reminds the user that the DOC inlet temperature is high, possibly damages parts and requests maintenance.
Sequentially performing the steps of ECU power supply inspection, connection harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection, wherein the steps are as follows:
A. ECU power supply inspection
Turning off a key switch of the vehicle and waiting for two minutes;
checking whether a high temperature alarm still exists:
if yes, performing the next examination;
if not, the vehicle key switch is turned on, and the fault is eliminated.
B. Connection harness inspection
Closing a vehicle key switch;
it is checked whether the ECU external insurance is damaged,
the connector is pulled down, and whether the ECU power supply terminal is damaged or not is observed;
observing whether each connector of the ECU is normally installed;
checking whether a high temperature alarm still exists:
if yes, performing the next examination;
if not, the vehicle key switch is turned on, and the fault is eliminated.
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;
checking whether the DOC inlet temperature sensor connector is loose;
whether the key is powered on and gives an alarm at high temperature exists or not:
if yes, performing the next examination;
if not, the vehicle key switch is turned on, and the fault is eliminated.
D. Throttle check
Closing a vehicle key switch;
checking whether a throttle wire harness is broken;
checking whether the throttle valve connector is loose;
checking whether the throttle valve plate is stuck;
whether the key is powered on and gives an alarm at high temperature exists or not:
if yes, performing the next examination;
if not, the vehicle key switch is turned on, and the fault is eliminated.
E. EGR valve inspection
Closing a vehicle key switch;
checking whether the EGR valve wire harness is broken;
checking whether the EGR valve connector is loose;
checking whether the EGR valve plate is stuck;
whether a key power-on alarm exists or not:
if yes, performing the next examination;
if not, the vehicle key switch is turned on, and the fault is eliminated.
F. Supercharger inspection
Closing a vehicle key switch;
checking whether the supercharger wire harness is broken;
checking whether the supercharger connector is loose;
checking whether the supercharger blades are worn or stuck;
whether the key is powered on and gives an alarm at high temperature exists or not:
if yes, performing the next examination;
if not, the vehicle key switch is turned on, and the fault is eliminated.
Referring to fig. 4, the embodiment of the invention further provides a DOC inlet high temperature alarm device, which is characterized by comprising: the device comprises an acquisition unit, a determination unit, a calculation unit and an alarm unit.
The acquisition unit is used for continuously acquiring the DOC inlet temperature and the engine power in a preset period.
Specifically, the preset period is T seconds, and DOC inlet temperature and engine power under different working conditions are acquired and obtained every T seconds, and are respectively recorded as P1, P2 and …, and T1, T2 and ….
The determining unit is used for sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power.
Specifically, the determining a plurality of temperature calculation windows sequentially according to the continuously acquired engine power includes:
the engine power is accumulated sequentially from the first engine power P1 until the accumulated value is larger than the preset power threshold value P, and the accumulated value is recorded 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 i-th engine power Pi.
And sequentially accumulating the engine power from the second engine power P2 until the accumulated value is larger than the preset power threshold value P, and recording the accumulated value as a second temperature calculation window. Similarly, if p2+ … +pj > P, the second temperature calculation window is recorded from the first engine power P2 to the jth engine power Pj, as shown in fig. 2.
And so on, a plurality of temperature calculation windows are determined.
The calculation unit is used for calculating the corresponding window temperature according to the DOC inlet temperature in each temperature calculation window.
Specifically, the calculating the corresponding window temperature according to the DOC inlet temperature continuously acquired in each temperature calculating 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 TC1. 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 TC1.
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 TC2. And arranging the DOC inlet temperature in the second temperature calculation window from large to small, wherein the temperature values exceeding a preset percentage (which can be 90%) are all larger than TC2, and the window temperature of the first temperature calculation window is TC2.
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 larger than the preset temperature threshold value.
Specifically, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, performing DOC inlet high-temperature alarm, including:
and determining the preset number m according to the formula m which is more than or equal to 60/t.
For example, assuming that the preset period is 1 second, i.e. t is 1, m is greater than or equal to 60, m=60, if the temperatures of 60 continuous windows are all greater than the preset temperature threshold (600 ℃ is preferable), DOC entrance high-temperature alarm is performed.
Further, after the DOC inlet high-temperature alarm is carried out, if the temperatures of the windows with the continuous preset number are smaller than the preset temperature threshold, the DOC inlet high-temperature alarm is released, and long-time alarm is avoided.
According to the DOC inlet high-temperature alarm device, firstly, the DOC inlet temperature and the engine power are continuously acquired according to a preset period, then a plurality of temperature calculation windows are sequentially determined according to the continuously acquired 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 if the window temperatures of the continuous preset number are all larger than a preset temperature threshold value. According to the method, the DOC inlet temperature and the engine power are subjected to fusion calculation, the DOC inlet high temperature can be accurately alarmed, damage of parts caused by abnormal high temperature of the DOC is avoided, and the technical problem that false alarm exists in the traditional scheme of high temperature monitoring through the DOC inlet temperature sensor can be solved.
As an alternative implementation, in an embodiment of the invention, the alarm unit is further configured to:
and acquiring 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 engine combustion mode, 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 alternative implementation, in an embodiment of the invention, the alarm unit is further configured to:
and sending DOC inlet high-temperature alarm information and maintenance advice to a client, wherein the maintenance advice is used for sequentially performing ECU power supply inspection, connection harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection.
It should be noted that, for convenience and brevity of description, the specific working process of the device and each unit described above may refer to the corresponding process in the DOC inlet high temperature alarm method embodiment, which is not described herein again.
The DOC inlet high temperature alarm apparatus provided in the above embodiment may be implemented in the form of a computer program which may be run on a computer device as shown in fig. 5.
The embodiment of the invention also provides computer equipment, which comprises: the DOC inlet 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 or part of the steps of the DOC inlet high-temperature alarm method.
Wherein the network interface is used for network communication, such as sending assigned tasks, etc. It will be appreciated by those skilled in the art that the structure shown in FIG. 5 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
The processor may be a CPU, but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic device discrete hardware components, or the like. A general purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like, that is a control center for a computer device, with various interfaces and lines connecting various parts of the entire computer device.
The memory may be used to store computer programs and/or modules, and the processor implements various functions of the computer device by running or executing the computer programs and/or modules stored in the memory, and 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, application programs required for 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, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid state storage device.
Wherein in one embodiment the processor is configured to run a computer program stored in the memory to implement the steps of:
step S10, continuously acquiring the DOC inlet temperature and the engine power 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 the corresponding window temperature according to the DOC inlet temperature in each temperature calculation window.
And S40, if the temperatures of the windows with the continuous preset number are all larger than the preset temperature threshold, carrying out DOC inlet high-temperature alarm.
As an optional implementation manner, in an embodiment of the present invention, the step of sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power includes:
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;
sequentially accumulating the engine power 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 so on, a plurality of temperature calculation windows are determined.
As an optional implementation manner, in an embodiment of the present invention, 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 TC1;
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 TC2;
and by analogy, calculating the window temperature corresponding to each temperature calculation window.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry high temperature alarm includes:
and acquiring 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 windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry high temperature alarm further includes:
and sending DOC inlet high-temperature alarm information and maintenance advice to a client, wherein the maintenance advice is used for sequentially performing ECU power supply inspection, connection harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection.
As an optional implementation manner, in an embodiment of the present invention, if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC entry 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 an embodiment of the present invention, after the DOC inlet high temperature alarm is performed, if the temperatures of the windows of the continuous preset number are all less than the preset temperature threshold, the DOC inlet high temperature alarm is released.
The embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, all or part of the steps of the DOC inlet high temperature alarm method are realized.
The foregoing embodiments of the present invention may be implemented in whole or in part by computer program instructions for implementing the relevant hardware, and the computer program may be stored in a computer readable storage medium, where the computer program when executed by a processor may implement the steps of the methods described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-Only memory (ROM), a random access memory (Random Access memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
It will be appreciated by those skilled in the art that 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, magnetic 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 one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above numbers in the embodiments of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the 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. The DOC inlet high-temperature alarm method is characterized by comprising the following steps of:
continuously acquiring the DOC inlet temperature and the engine power according to a preset period;
sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power;
calculating the corresponding window temperature according to the DOC inlet temperature in each temperature calculation window;
and if the temperatures of the windows with the continuous preset number are all larger than the preset temperature threshold, carrying out DOC inlet high-temperature alarm.
2. The DOC inlet high temperature warning method as claimed in claim 1, wherein the step of sequentially determining a plurality of temperature calculation windows from the continuously acquired engine power includes:
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;
sequentially accumulating the engine power 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 so on, a plurality of temperature calculation windows are determined.
3. The DOC inlet high temperature alarm method according to claim 2, wherein the step of calculating a corresponding window temperature from 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 TC1;
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 TC2;
and by analogy, calculating the window temperature corresponding to each temperature calculation window.
4. The DOC inlet high temperature alarm method according to claim 1, wherein the step of performing DOC inlet high temperature alarm if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold value comprises:
and acquiring 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 windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC inlet high temperature alarm further comprises:
and sending DOC inlet high-temperature alarm information and maintenance advice to a client, wherein the maintenance advice is used for sequentially performing ECU power supply inspection, connection harness inspection, DOC inlet sensor hardware inspection, throttle inspection, EGR valve inspection and supercharger inspection.
6. The DOC inlet high temperature alarm method according to claim 1, wherein if the temperatures of the windows of the continuous preset number are all greater than the preset temperature threshold, the step of performing DOC inlet high temperature alarm further comprises:
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 as claimed in claim 1, wherein:
after the DOC inlet high-temperature alarm is carried out, if the window temperatures of the continuous preset number are smaller than the preset temperature threshold value, the DOC inlet high-temperature alarm is released.
8. A DOC inlet high temperature alarm device, comprising:
the acquisition unit is used for continuously acquiring the DOC inlet temperature and the engine power in a preset period;
the determining unit is used for sequentially determining a plurality of temperature calculation windows according to the continuously acquired engine power;
the calculation unit is used for calculating the corresponding window temperature according to the 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 larger than the preset temperature threshold value.
9. A computer device, comprising: a memory and a processor, the memory having stored therein at least one instruction that is loaded and executed by the processor to implement the DOC inlet high temperature alarm 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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