CN112523885A - Method and device for controlling fire in engine - Google Patents
Method and device for controlling fire in engine Download PDFInfo
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- CN112523885A CN112523885A CN202011368444.2A CN202011368444A CN112523885A CN 112523885 A CN112523885 A CN 112523885A CN 202011368444 A CN202011368444 A CN 202011368444A CN 112523885 A CN112523885 A CN 112523885A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 claims description 27
- 239000000446 fuel Substances 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
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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
- F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
- F02B77/086—Sensor arrangements in the exhaust, e.g. for temperature, misfire, air/fuel ratio, oxygen sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
- F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The application discloses control method of catching fire in engine is applied to the control assembly, includes: detecting the misfire rate of a preset target area, judging the size relation between the misfire rate and a preset minimum deviation threshold value, judging the size relation between the misfire rate and the preset target threshold value when the misfire rate is greater than the preset minimum deviation threshold value, delaying the ignition time and/or increasing the gasoline concentration value corresponding to the ignition of the target area when the misfire rate is less than the preset target threshold value, and returning to the step of detecting the misfire rate of the preset target area.
Description
Technical Field
The application relates to the technical field of engine control, in particular to a method and a device for controlling misfire in an engine.
Background
The scattering of parts exists in the mass production of the motorcycle power system, or after the motorcycle is used for a long time, the wear of the parts changes, so that the mixing ratio and in-cylinder combustion of the actual work cannot be consistent with the development state, and the fire is generated in a low-load area.
The existing motorcycle is provided with an electric control system of a mobile phone automobile diagnostic instrument (OBD2), has the function of detecting fire of a power system, and gives an alarm to the mobile phone automobile diagnostic instrument (OBD2) to prompt a user to maintain after the fire occurs to a certain degree. The prior art is only used for detecting the fire, and cannot prevent the emission deterioration caused by the continuous fire and the fuel oil blown into the catalyst to burn, so that the catalyst is damaged due to overhigh temperature, and finally the emission conversion function is lost.
Disclosure of Invention
The problem that this application will be solved is, when motorcycle driving system appears catching fire the tendency, has not reached the degree that the system reported to the police yet, and control system just implements the remedy scheme, reduces to catch fire, eliminates or prolongs the mileage of reporting to the police. And simultaneously reduces the pollutant discharge amount.
In order to solve the above problem, an embodiment of the present application provides a method for controlling a misfire in an engine, which is applied to a control assembly, and includes:
detecting a misfire rate aiming at a preset target area, and judging the size relation between the misfire rate and a preset minimum deviation threshold value;
judging the size relation between the misfire rate and a preset target threshold value when the misfire rate is larger than the preset minimum deviation threshold value;
and delaying the ignition time and/or increasing the gasoline concentration value corresponding to the target area when the misfire rate is smaller than a preset target threshold value, and returning to the step of detecting the misfire rate aiming at the preset target area.
Further, after the step of determining the magnitude relationship between the misfire rate and the preset minimum deviation threshold value, the method further includes:
and returning to the step of performing misfire rate detection for the preset target area when the misfire rate is less than the preset minimum deviation threshold value.
Further, after the step of determining the relationship between the misfire rate and the preset target threshold value, the method further includes:
and when the fire rate is greater than a preset target threshold value, giving an alarm.
Further, the target region is provided with a target counter and a misfire detection sensor, and the detecting of the misfire rate for the target region in the preset engine includes:
the misfire rate is detected for a preset target region in the engine by the target counter and the misfire detection sensor.
Further, the control component is connected with a control component, and the control component is used for setting a minimum deviation threshold value and a target threshold value.
A control device for misfire in an engine, applied to a control assembly, comprising:
the minimum deviation threshold value judging module is used for detecting the fire rate aiming at a preset target area and judging the size relation between the fire rate and a preset minimum deviation threshold value;
the target threshold value judging module is used for judging the size relation between the misfire rate and a preset target threshold value when the misfire rate is larger than the preset minimum deviation threshold value;
and the control module is used for delaying the ignition time and/or increasing the gasoline concentration value corresponding to the target area in the ignition process when the misfire rate is smaller than a preset target threshold value, and returning to the step of detecting the misfire rate aiming at the preset target area.
Further, the apparatus further comprises:
and the circulation module is used for returning to the step of detecting the misfire rate aiming at the preset target area when the misfire rate is smaller than the preset minimum deviation threshold value.
Further, the apparatus further comprises:
and the alarm module is used for giving an alarm by the mobile phone automobile diagnostic instrument when the fire rate is greater than a preset target threshold value.
Further, the target area is provided with a target counter and a misfire detection sensor, and the minimum deviation threshold value determination module includes:
and the misfire rate detection submodule is used for detecting the misfire rate of a preset target area in the engine through the target counter and the misfire detection sensor.
Further, the control component is connected with a control component, and the control component is used for setting a minimum deviation threshold value and a target threshold value.
Compared with the prior art, the method for controlling the misfire in the engine is applied to the control assembly and comprises the following steps: detecting the misfire rate of a preset target area, judging the size relation between the misfire rate and a preset minimum deviation threshold value, judging the size relation between the misfire rate and the preset target threshold value when the misfire rate is larger than the preset minimum deviation threshold value, reducing the ignition angle and the target air-fuel ratio for enrichment when the misfire rate is smaller than the preset target threshold value, and returning to the step of detecting the misfire rate of the preset target area. By reducing the firing angle and enriching the target air-fuel ratio, misfire is controlled to reduce or eliminate in the engine, emission deterioration caused by continuation of misfire is avoided, and loss of the emission conversion function is prevented.
Drawings
FIG. 1 is a schematic block diagram of an engine according to an embodiment;
FIG. 2 is a flowchart illustrating steps in a method for controlling misfire in an engine according to one embodiment;
FIG. 3 is a flow chart of yet another method of controlling misfire in an engine provided in one embodiment;
fig. 4 is a flowchart illustrating a configuration of an apparatus for controlling misfire in an engine according to an embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The scattering of parts exists in the mass production of the motorcycle power system, or after the motorcycle is used for a long time, the wear of the parts changes, so that the mixing ratio and in-cylinder combustion of the actual work cannot be consistent with the development state, and the fire is generated in a low-load area.
As shown in fig. 1, a distribution diagram of the area in the cylinder of the conventional motorcycle engine includes an area a, an area B, an area C, an area D and an area E, the motorcycle engine has dispersion of parts in mass production, or the parts wear changes after the motorcycle is used for a long time, so that the mixing ratio of actual operation and in-cylinder combustion are not consistent with the development state, and a misfire is easily generated in a low-load area (i.e., the area a). The existing motorcycle is provided with an electric control system of a mobile phone automobile diagnostic instrument (OBD2), has the function of detecting fire of a power system, and gives an alarm to the mobile phone automobile diagnostic instrument (OBD2) to prompt a user to maintain after the fire occurs to a certain degree. The prior art is only used for detecting the fire, and cannot prevent the emission deterioration caused by the continuous fire and the fuel oil blown into the catalyst to burn, so that the catalyst is damaged due to overhigh temperature, and finally the emission conversion function is lost.
To solve the above problem, as shown in fig. 2, a flow chart of steps of a method for controlling misfire in an engine, applied to a control module, is provided, the steps of the method for controlling misfire in an engine comprising:
during the operation of the motorcycle, the built-in control module of the motorcycle can detect the misfire rate of a preset target area in real time, and particularly can detect the misfire rate of a preset area A (namely the area A in the engine cylinder of the existing motorcycle shown in figure 1) in real time. After the misfire rate corresponding to the target area is detected, the magnitude relationship between the misfire rate and the preset minimum deviation threshold value can be determined.
In an embodiment, after the step 201, the method further includes:
and returning to the step of performing misfire rate detection for the preset target area when the misfire rate is less than the preset minimum deviation threshold value.
In the embodiment of the present application, when the misfire rate is smaller than the preset minimum deviation threshold value, it is verified that only a small misfire probability exists in the preset target area, the misfire probability may be caused by a normal error, and belongs to the allowable misfire probability range, and no sparking intervention is performed on the target area, so no intervention operation is performed, and the step of detecting the misfire rate for the preset target area is returned.
when the misfire rate detection is carried out on a preset target area and the misfire rate is larger than the preset minimum deviation threshold value, the fact that a large misfire probability exists in the preset target area is proved, the misfire probability is not caused by normal errors and does not belong to an allowable misfire probability range, and the target area needs to be subjected to sparking intervention. Before the ignition intervention is performed on the target area, the magnitude relation between the misfire rate and a preset target threshold value can be judged.
And step 203, when the misfire rate is smaller than a preset target threshold value, delaying the ignition time and increasing the gasoline concentration value corresponding to the target area in the ignition process, and returning to the step of detecting the misfire rate aiming at the preset target area.
And when the misfire rate is smaller than a preset target threshold value, proving that the misfire probability can also recover the normal misfire rate under the intervention condition, delaying the ignition time of the spark plug, controlling the increase of the oil supply amount in the target area by controlling the oil delivery pipe so as to increase the gasoline concentration value when the target area is ignited, and returning to the step of detecting the misfire rate aiming at the preset target area.
In an embodiment, after the step 203, the method further includes:
and when the fire rate is greater than a preset target threshold value, giving an alarm.
When the fire rate is greater than a preset target threshold value, the fire rate is proved to be incapable of restoring the normal fire rate through intervention, the motorcycle engine has a larger problem, and then an alarm is given to inform a user that the motorcycle engine needs to be maintained.
The misfire rate can be calculated by a crank angle (position) sensor.
In one embodiment, the target area is provided with a target counter and a misfire detection sensor, and the step 201 includes:
the misfire rate is detected for a preset target region in the engine by the target counter and the misfire detection sensor.
In the using process of the motorcycle, the fire detection sensor can detect whether the ignition is successful or not during each ignition, if the ignition is unsuccessful, the number of times of fire is recorded through target counting, and then the fire rate of the target area is calculated according to the number of times of fire.
In one embodiment, a control component is coupled to the control component and is configured to set a minimum deviation threshold and a target threshold.
In the embodiment of the application, a user can set the minimum deviation threshold value and the target threshold value through the control component, and further control the flexibility of the misfire rate detection.
To facilitate understanding of the above-mentioned embodiments of the present application, the following will be explained by way of example as shown in fig. 3, and it should be noted that the present application is not limited to the following example:
step S1: starting a special correction strategy in a working condition A area with frequent fire accidents;
step S2: detecting the fire rate of the area A under the working condition; (i.e., misfire rate detection is performed for a preset target area);
step S3: judging whether the misfire rate of the working condition A area reaches a threshold value K1, executing the step S4 when the misfire rate of the working condition A area reaches a threshold value K1, and otherwise, returning to execute the step S2; (i.e., determining a magnitude relationship between the misfire rate and a preset minimum deviation threshold);
step S4: judging whether the fire rate of the working condition A area reaches a threshold value K2, carrying out OBD alarm when the fire rate of the working condition A area reaches a threshold value K2, otherwise, executing a step S5; (i.e., determining a magnitude relationship of the misfire rate to a predetermined target threshold value when the misfire rate is greater than the predetermined minimum deviation threshold value);
step S5: reducing the ignition angle and the target air-fuel ratio for enrichment, setting step sizes for both measures, executing the measure until the misfire rate is reduced below K1, and returning to execute the step S2 when the misfire rate of the working condition A area is reduced below K1; (i.e. when the misfire rate is less than the preset target threshold value, delaying the ignition time and/or increasing the gasoline concentration value corresponding to the ignition of the target area, and returning to the step of detecting the misfire rate for the preset target area).
In the embodiment of the present application, the misfire rate detection is performed for a preset target area, and the magnitude relation between the misfire rate and a preset minimum deviation threshold value is determined, and when the misfire rate is greater than the preset minimum deviation threshold value, the magnitude relation between the misfire rate and the preset target threshold value is determined, and when the misfire rate is less than the preset target threshold value, the ignition angle is decreased and the target air-fuel ratio is increased, and the procedure returns to the step of performing the misfire rate detection for the preset target area. The ignition angle is reduced and the target air-fuel ratio is enriched, so that the misfire in the engine is controlled, the misfire rate is reduced, the emission deterioration caused by the continuous misfire is avoided, the pollution emission caused by the misfire and the oil consumption caused by the misfire are reduced, the damage of the misfire to a catalyst is reduced, the loss of the emission conversion function is prevented, the alarm frequency of a mobile phone automobile diagnostic instrument is reduced, and the complaint of customers is reduced.
In order to solve the above problem, as shown in fig. 4, there is provided a schematic structural diagram of a control apparatus for misfire in an engine, applied to a control module, the control apparatus for misfire in an engine comprising:
a minimum deviation threshold value judging module 401, configured to perform misfire rate detection on a preset target region, and judge a magnitude relationship between the misfire rate and a preset minimum deviation threshold value;
a target threshold determination module 402, configured to determine a magnitude relationship between the misfire rate and a preset target threshold when the misfire rate is greater than the preset minimum deviation threshold;
and a control module 403, configured to decrease the ignition angle and the target air-fuel ratio for enrichment when the misfire rate is smaller than a preset target threshold, and return to the step of detecting the misfire rate for the preset target area.
In one embodiment, the apparatus further comprises:
and the circulation module is used for returning to the step of detecting the misfire rate aiming at the preset target area when the misfire rate is smaller than the preset minimum deviation threshold value.
In one embodiment, the apparatus further comprises:
and the alarm module is used for giving an alarm by the mobile phone automobile diagnostic instrument when the fire rate is greater than a preset target threshold value.
In one embodiment, the target area is provided with a target counter and a misfire detection sensor, and the minimum deviation threshold value determination module 401 includes:
and the misfire rate detection submodule is used for detecting the misfire rate of a preset target area in the engine through the target counter and the misfire detection sensor.
In one embodiment, a control component is coupled to the control component and is configured to set a minimum deviation threshold and a target threshold.
In the embodiment of the present application, the misfire rate detection is performed for a preset target area, and the magnitude relation between the misfire rate and a preset minimum deviation threshold value is determined, and when the misfire rate is greater than the preset minimum deviation threshold value, the magnitude relation between the misfire rate and the preset target threshold value is determined, and when the misfire rate is less than the preset target threshold value, the ignition angle is decreased and the target air-fuel ratio is increased, and the procedure returns to the step of performing the misfire rate detection for the preset target area. The ignition angle is reduced and the target air-fuel ratio is enriched, so that the misfire in the engine is controlled, the misfire rate is reduced, the emission deterioration caused by the continuous misfire is avoided, the pollution emission caused by the misfire and the oil consumption caused by the misfire are reduced, the damage of the misfire to a catalyst is reduced, the loss of the emission conversion function is prevented, the alarm frequency of a mobile phone automobile diagnostic instrument is reduced, and the complaint of customers is reduced.
In an embodiment, an electronic device is provided, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor executes the computer program to implement the steps of the method for controlling an in-engine misfire as in the above-mentioned embodiments.
In an embodiment, a computer-readable storage medium is provided, which is characterized by comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the steps of a method for controlling an engine misfire as in the above-mentioned embodiments.
The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (10)
1. A method of controlling misfire in an engine, applied to a control assembly, comprising:
detecting a misfire rate aiming at a preset target area in an engine, and judging the size relation between the misfire rate and a preset minimum deviation threshold value;
judging the size relation between the misfire rate and a preset target threshold value when the misfire rate is larger than the preset minimum deviation threshold value;
and when the misfire rate is smaller than a preset target threshold value, delaying the ignition time and/or increasing the gasoline concentration value corresponding to the target area in the ignition process, and returning to the step of detecting the misfire rate aiming at the preset target area.
2. The method for controlling engine internal misfire according to claim 1, wherein after the step of judging the magnitude relation between the misfire rate and a preset minimum deviation threshold value, the method further comprises:
and returning to the step of performing misfire rate detection for the preset target area when the misfire rate is less than the preset minimum deviation threshold value.
3. The method for controlling engine internal misfire according to claim 1, wherein after the step of judging the magnitude relation between the misfire rate and a preset target threshold value, the method further comprises:
and when the fire rate is greater than a preset target threshold value, giving an alarm.
4. The method of controlling engine misfire according to claim 1, wherein the target area is provided with a target counter and a misfire detection sensor, and the detecting misfire rate for the target area in the preset engine includes:
the misfire rate is detected for a preset target region in the engine by the target counter and the misfire detection sensor.
5. The method of controlling engine misfire as recited in claim 1, wherein a control module is connected to the control module, the control module configured to set a minimum deviation threshold value and a target threshold value.
6. A control device for misfire in an engine, applied to a control assembly, comprising:
the minimum deviation threshold value judging module is used for detecting the fire rate aiming at a preset target area and judging the size relation between the fire rate and a preset minimum deviation threshold value;
the target threshold value judging module is used for judging the size relation between the misfire rate and a preset target threshold value when the misfire rate is larger than the preset minimum deviation threshold value;
and the control module is used for delaying the ignition time and/or increasing the gasoline concentration value corresponding to the target area in the ignition process when the misfire rate is smaller than a preset target threshold value, and returning to the step of detecting the misfire rate aiming at the preset target area.
7. The apparatus for controlling misfire in an engine according to claim 6, characterized by further comprising:
and the circulation module is used for returning to the step of detecting the misfire rate aiming at the preset target area when the misfire rate is smaller than the preset minimum deviation threshold value.
8. The apparatus for controlling misfire in an engine according to claim 6, characterized by further comprising:
and the alarm module is used for giving an alarm by the mobile phone automobile diagnostic instrument when the fire rate is greater than a preset target threshold value.
9. The apparatus for controlling engine misfire according to claim 6, wherein the target area is provided with a target counter and a misfire detection sensor, and the minimum deviation threshold value judging module includes:
and the misfire rate detection submodule is used for detecting the misfire rate of a preset target area in the engine through the target counter and the misfire detection sensor.
10. The apparatus for controlling misfire in engine as recited in claim 6, wherein a control module is connected to the control module, the control module being configured to set a minimum deviation threshold value and a target threshold value.
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| CN202011368444.2A CN112523885B (en) | 2020-11-27 | 2020-11-27 | Method and device for controlling fire in engine |
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| CN202011368444.2A CN112523885B (en) | 2020-11-27 | 2020-11-27 | Method and device for controlling fire in engine |
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| CN112523885B CN112523885B (en) | 2023-04-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962115A (en) * | 2022-06-28 | 2022-08-30 | 东风汽车集团股份有限公司 | Method and system for optimizing ignition energy of engine of vehicle |
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| CN114962115B (en) * | 2022-06-28 | 2024-02-06 | 东风汽车集团股份有限公司 | Method and system for optimizing ignition energy of engine of vehicle |
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