CN115117736B - Method and device for preventing spark plug from carbon deposition and vehicle - Google Patents
Method and device for preventing spark plug from carbon deposition and vehicle Download PDFInfo
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- CN115117736B CN115117736B CN202210016424.1A CN202210016424A CN115117736B CN 115117736 B CN115117736 B CN 115117736B CN 202210016424 A CN202210016424 A CN 202210016424A CN 115117736 B CN115117736 B CN 115117736B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
- H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
- H01T21/04—Cleaning
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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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- Manufacturing & Machinery (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The application relates to the technical field of vehicles, in particular to a method and a device for preventing carbon deposition of a spark plug and a vehicle, wherein the method comprises the following steps: after the engine is stopped, judging whether the vehicle meets an empty spark condition, wherein the empty spark condition comprises that the last operation time of the engine is in a preset time interval; generating a virtual ignition signal when the vehicle meets an empty spark condition; based on the virtual ignition signal, performing an idle spark action on the spark plug according to a preset ignition sequence, cleaning carbon deposition in the spark plug by using the generated spark arc, and stopping the idle spark action after the exit condition is met. The method solves the problem that the normal operation of the engine is possibly influenced by the additional ignition of the engine in the power stroke of the engine at the initial starting stage of the engine and the specific ignition moment, can clean the spark plug after stopping, improves the cleaning degree of the spark plug, provides a good ignition basis for the next normal starting, and reduces the failure rate of the cold starting flooding problem.
Description
Technical Field
The present application relates to the field of vehicle technologies, and in particular, to a method and apparatus for preventing carbon deposition on a spark plug, and a vehicle
Background
In the actual working process of the engine, the spark plug plays an important role, high-voltage power transmitted by the ignition coil is released, so that the mixed gas between electrodes of the spark plug is broken down, electric sparks are generated to ignite the mixed gas in the cylinder, and continuous power is provided for the vehicle. In a low-temperature environment, the water temperature of the engine is low, the atomization degree of gasoline is poor, and the combustion is insufficient, so that carbon deposit is formed and attached to a ceramic body at the firing end of the spark plug; in addition, when a customer runs for a long time with short mileage and small load, the self-cleaning temperature (400 ℃) of the spark plug cannot be reached, carbon deposit cannot be burnt out in time, the insulation resistance of the spark plug is reduced (generally less than or equal to 10MΩ) after the carbon deposit is slowly accumulated, spark is discharged with an iron shell along the root of a nose ceramic body through a central electrode, and mixed gas cannot be ignited, so that the vehicle cannot be started or is difficult to start.
In the related art, the principle that carbon deposition is burnt out by a spark plug arc is utilized, and the ignition is additionally performed in the power stroke of the engine at the specific ignition moment at the initial stage of the engine start.
However, in the normal working process of the engine, abnormal operation affects customer perception and causes adverse effects; and the climbing path of the arc is negligible relative to the area of accumulated carbon of the spark plug, and the accumulated carbon can be cleaned effectively only by the ignition of a period of accumulated time, so that the problem is to be solved.
Disclosure of Invention
In view of the above, the present application aims to provide a method for preventing carbon deposition on a spark plug, which solves the problem that the engine may be affected by normal operation by additional ignition in the power stroke of the engine at the initial starting stage of the engine and at the specific ignition moment, and can clean the spark plug after stopping, improve the cleaning degree of the spark plug, provide a good ignition basis for the next normal starting, and reduce the failure rate of the cold start flooding problem.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
a method of preventing carbon build-up in a spark plug comprising the steps of:
after the engine is stopped, judging whether the vehicle meets an empty spark condition, wherein the empty spark condition comprises that the last operation time of the engine is in a preset time interval;
generating a virtual ignition signal when the vehicle meets the empty spark condition; and
and based on the virtual ignition signal, performing an idle spark action on the spark plug according to a preset ignition sequence, cleaning carbon deposition in the spark plug by using the generated spark arc, and stopping the idle spark action after the exit condition is met.
Further, the performing the idle spark action on the spark plug according to the preset ignition sequence includes:
and controlling the ignition of the spark plug according to the preset cleaning frequency, the preset cleaning magnetizing time and the preset cleaning duration.
Further, the preset cleaning frequency is less than or equal to 40Hz;
the preset cleaning and magnetizing time is less than or equal to 2.8ms;
the duration of the preset cleaning is longer than or equal to 30s.
Further, the air-spark condition further includes:
the current environment temperature of the vehicle is lower than a first temperature threshold value, and the water temperature is lower than a second temperature threshold value and is in a preset time interval.
Further, the air-spark condition further includes:
the ignition system of the vehicle is fault-free;
the current voltage of the storage battery is greater than a first preset voltage.
Further, the exit condition includes:
the duration time of the idle spark is longer than the preset duration time;
or the current voltage of the storage battery is smaller than or equal to a second preset voltage;
or, the ignition system fails;
alternatively, the vehicle is started;
alternatively, the rotational speed of the engine is greater than a preset rotational speed.
Compared with the prior art, the method for preventing the carbon deposition of the spark plug has the following advantages:
the method for preventing the spark plug from carbon deposition comprises the steps of generating a virtual ignition signal after an engine stops and if a vehicle meets an idle sparking condition, executing the idle sparking action on the spark plug according to a certain ignition sequence based on the virtual ignition signal, cleaning carbon deposition in the spark plug by utilizing the generated spark arc, and stopping the idle sparking action after the exiting condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by the additional ignition of the engine in the power stroke of the engine at the initial starting stage of the engine and the specific ignition moment is solved, the spark plug can be cleaned after the engine is stopped, the cleaning degree of the spark plug is improved, a good ignition basis is provided for the next normal starting, and the failure rate of the cold starting flooding problem is reduced.
The application further aims at providing a device for preventing carbon deposition of the spark plug, which solves the problem that the normal operation of the engine is influenced by the additional ignition in the working stroke of the engine at the initial starting stage of the engine and the specific ignition moment, can clean the spark plug after stopping, improves the cleaning degree of the spark plug, provides a good ignition basis for the next normal starting, and reduces the failure rate of the cold starting flooding problem.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
an apparatus for preventing carbon deposition on a spark plug, comprising:
the judging module is used for judging whether the vehicle meets an empty spark condition after the engine is stopped, wherein the empty spark condition comprises that the last running time of the engine is in a preset time interval;
the generation module is used for generating a virtual ignition signal when the vehicle meets the empty spark condition; and
and the control module is used for executing the idle spark action on the spark plug according to the preset ignition sequence based on the virtual ignition signal, cleaning carbon deposition in the spark plug by utilizing the generated spark arc, and stopping the idle spark action after the exit condition is met.
Further, the control module is specifically configured to:
and controlling the ignition of the spark plug according to the preset cleaning frequency, the preset cleaning magnetizing time and the preset cleaning duration.
Further, the preset cleaning frequency is less than or equal to 40Hz;
the preset cleaning and magnetizing time is less than or equal to 2.8ms;
the duration of the preset cleaning is longer than or equal to 30s.
Further, the air-spark condition further includes:
the current environment temperature of the vehicle is lower than a first temperature threshold value, and the water temperature is lower than a second temperature threshold value and is in a preset time interval.
Further, the air-spark condition further includes:
the ignition system of the vehicle is fault-free;
the current voltage of the storage battery is greater than a first preset voltage.
Further, the exit condition includes:
the duration time of the idle spark is longer than the preset duration time;
or the current voltage of the storage battery is smaller than or equal to a second preset voltage;
or, the ignition system fails;
alternatively, the vehicle is started;
alternatively, the rotational speed of the engine is greater than a preset rotational speed.
The device for preventing carbon deposition on the spark plug has the same advantages as the method for preventing carbon deposition on the spark plug compared with the prior art, and is not described herein.
Another object of the present application is to provide a vehicle, which solves the problem that the engine may be affected by the normal operation of the engine when the ignition is added in the power stroke of the engine at the initial starting stage of the engine and at the specific ignition moment, and can clean the spark plug after stopping, so as to improve the cleaning degree of the spark plug, provide a good ignition basis for the next normal starting, and reduce the failure rate of the cold start flooding problem.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
a vehicle provided with the device for preventing spark plug carbon deposition as described in the above embodiment.
The vehicle has the same advantages as the device for preventing carbon deposition of the spark plug compared with the prior art, and the description is omitted herein.
Another object of the present application is to propose a computer readable storage medium.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
a computer readable storage medium having stored thereon a computer program for execution by a processor for performing the method of preventing spark plug carbon deposition described above.
The computer readable storage medium has the same advantages as those of the method for preventing spark plug carbon deposition, and is not described herein.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a flow chart of a method of preventing spark plug carbon deposition in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of a spark plug according to one embodiment of the present application;
FIG. 3 is a graph showing the relationship between the time of empty spark and insulation resistance according to one embodiment of the present application;
FIG. 4 is a flow chart of a method of preventing spark plug carbon deposition in accordance with one embodiment of the present application;
FIG. 5 is a schematic illustration of the results of a carbon deposit flooding cylinder spark plug treatment in accordance with one embodiment of the present application;
FIG. 6 is a block diagram of an apparatus for preventing spark plug carbon deposition according to an embodiment of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The application will be described in detail below with reference to the drawings in connection with embodiments.
FIG. 1 is a flow chart of a method of preventing spark plug soot according to an embodiment of the present application.
Before describing the method for preventing carbon deposition of the spark plug according to the embodiment of the application, the lower spark plug and the reason for carbon deposition of the spark plug will be briefly described.
Specifically, as shown in fig. 2, the spark plug includes: a spark plug shell, an insulator 3, a ground electrode 4, and a center electrode 5; the spark plug shell is provided with an annular step part 1 and a threaded part 2, and the spark plug can be fixed through the threaded part 2; the ignition function of the spark plug is achieved by the gap between the ground electrode 4 and the center electrode 5.
The insulator at the ignition end of the spark plug is integrally conical, a rounding is arranged at the lowest end position of the insulator, an annular step part 1 is arranged on the spark plug shell, the outermost side of the insulator at the position is farthest from the central electrode, the distance between the insulator and the spark plug main body is minimum, carbon deposition is formed on the conical surface of the insulator and the lowest end position of the insulator in the ignition and fuel combustion processes of the spark plug, and the central electrode and the spark plug shell are conducted at the minimum position of the insulator and the spark plug shell to form discharge due to the carbon deposition, so that fire is generated; if the self-cleaning temperature (400 ℃) of the spark plug is reached in the long-time running process of the engine, the temperature of the insulator of the spark plug is utilized to burn carbon molecules; however, if the customer runs for a long time with short mileage and small load, the self-cleaning temperature (400 ℃) of the spark plug cannot be reached, carbon deposit cannot be burnt out in time, the insulation resistance of the spark plug is reduced (generally less than or equal to 10MΩ) after the carbon deposit is slowly accumulated, spark is discharged with the iron shell along the root of the nose ceramic body through the central electrode, and the mixed gas cannot be ignited, so that the vehicle cannot be started or is difficult to start.
Based on the above problems, the present application provides a method for preventing carbon deposition on a spark plug, which generates a virtual ignition signal if a vehicle meets an idle sparking condition after an engine is stopped, and executes an idle sparking operation on the spark plug according to a certain ignition sequence based on the virtual ignition signal, and cleans carbon deposition in the spark plug by using a generated spark arc, and stops the idle sparking operation after a withdrawal condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by the additional ignition of the engine in the power stroke of the engine at the initial starting stage of the engine and the specific ignition moment is solved, the spark plug can be cleaned after the engine is stopped, the cleaning degree of the spark plug is improved, a good ignition basis is provided for the next normal starting, and the failure rate of the cold starting flooding problem is reduced.
Specifically, as shown in fig. 1, the method for preventing carbon deposition of a spark plug according to an embodiment of the present application includes the steps of:
step S101, after the engine is stopped, judging whether the vehicle meets an empty spark condition, wherein the empty spark condition comprises that the last operation time of the engine is in a preset time interval.
The preset duration interval can be a duration interval preset by a user, can be a duration interval obtained through limited experiments, can also be a duration interval obtained through limited computer simulation, and is not particularly limited herein. Preferably, the preset time period is 1-30 minutes.
Specifically, the embodiment of the application can delay the power-OFF of the main relay after the vehicle is turned to the OFF gear for flameout, and if the ECU (Electronic Control Unit, the electronic control unit) monitors that the engine rotation speed is 0 (namely, the engine is stopped) and the last operation time of the engine is within 1 to 30 minutes (different vehicle types can adjust the last operation time range according to the water temperature rise time), the idle spark condition is judged to be met.
Further, in some embodiments, the empty spark-over condition further comprises: the current ambient temperature of the vehicle is below a first temperature threshold and the water temperature is below a second temperature threshold.
The first temperature threshold and the second temperature threshold may be thresholds preset by a user, may be thresholds obtained through limited experiments, or may be thresholds obtained through limited computer simulation, and preferably, the first temperature threshold is 0 ℃, and the second temperature threshold is 70 ℃.
Specifically, after the engine is stopped, the embodiment of the application also needs to judge the current environmental temperature and water temperature of the vehicle when judging whether the vehicle meets the empty spark condition. That is, after the vehicle is turned OFF in the OFF gear, the main relay is delayed to be turned OFF, and if the ECU monitors that the engine speed is 0, the last operation time of the engine is 1 to 30 minutes (different vehicle types can adjust the last operation time range according to the water temperature rising time), the ambient temperature is lower than 0 ℃ and the water temperature is lower than 70 ℃, it is determined that the idle spark condition is satisfied.
Further, the air-strike condition further includes: the ignition system of the vehicle has no fault; the current voltage of the storage battery is greater than a first preset voltage.
The first preset voltage may be a voltage preset by a user, may be a voltage obtained through limited experiments, or may be a voltage obtained through limited computer simulation, and preferably, the first preset voltage is 12.5V.
That is, in the embodiment of the present application, after the engine is stopped, when determining whether the vehicle satisfies the idle spark condition, it is also necessary to determine the ignition system of the vehicle. That is, after the vehicle is turned OFF when the OFF gear is turned OFF, the main relay is delayed to be turned OFF, if the ignition system is not failed, and the ECU monitors that the engine speed is 0, the battery voltage is greater than 12.5V, the last operation time of the engine is within 1 to 30 minutes (the last operation time range can be adjusted according to the water temperature rise time for different vehicle types), and the environment temperature is lower than 0 ℃ and the water temperature is lower than 70 ℃, then it is determined that the idle spark condition is satisfied.
In addition, as shown in fig. 3, the function of empty spark ignition is considered to be mainly applied to the normal working period (the insulation resistance is more than or equal to 10MΩ) of the spark plug, the analysis is carried out according to the resistance change in the spark ignition process of the insulation resistance of the spark plug more than 10MΩ, the insulation resistance of the spark plug is increased by less than 30 seconds when the spark plug is used, and the single-cylinder spark ignition times are 1200 times. Step S102, when the vehicle meets the empty spark condition, a virtual ignition signal is generated.
That is, if the vehicle satisfies the idle spark condition, the ECU may issue a virtual ignition signal to the ignition coil, performing the idle spark action of the spark plug.
And step S103, based on the virtual ignition signal, performing an idle spark action on the spark plug according to a preset ignition sequence, cleaning carbon deposition in the spark plug by utilizing the generated spark arc, and stopping the idle spark action after the exit condition is met.
Further, in some embodiments, performing a skip fire action on the spark plug in a preset firing order includes: and controlling ignition of the spark plug according to the preset cleaning frequency, the preset cleaning magnetizing time and the preset cleaning duration.
Preferably, in some embodiments, further, the preset cleaning frequency is less than or equal to 40Hz; the preset cleaning and magnetizing time is less than or equal to 2.8ms; the preset cleaning duration is longer than or equal to 30s.
Wherein, in some embodiments, the exit condition comprises: the duration time of the idle spark is longer than the preset duration time; or the current voltage of the storage battery is smaller than or equal to a second preset voltage; or, the ignition system fails; or, vehicle start (e.g., triggering vehicle Key-ON gear); alternatively, the rotational speed of the engine is greater than a preset rotational speed (e.g., the preset rotational speed is 0).
The preset ignition sequence can be a sequence preset by a user, can be obtained through limited experiments, and can also be obtained through limited computer simulation; the preset time length can be a time length preset by a user, can be a time length obtained through limited experiments, and can also be a time length obtained through limited computer simulation; the second preset voltage can be a voltage preset by a user, can be a voltage obtained through limited experiments, or can be a voltage obtained through limited computer simulation; the preset rotation speed may be a rotation speed preset by a user, may be a rotation speed obtained through limited experiments, or may be a rotation speed obtained through limited computer simulation, which is not particularly limited herein.
It should be understood that the ECU sends a virtual ignition signal to the ignition coil, and when the ignition plug performs an idle spark action, the spark is performed according to a normal ignition cycle, such as a 4-cylinder machine, with an idle spark order of 1-3-4-2, at a certain frequency, for a certain magnetizing time, for a certain duration. The frequency f of the empty spark is less than or equal to 40Hz, the hardware evaluation of the ignition system is carried out, the number of the empty spark is less than or equal to 5 percent of the total number of the spark, and the reliability use requirement of related parts can be met; according to the triggering of 3 times of air flashovers per day, the triggering of the environmental temperature is less than or equal to 0 ℃, the calculation is carried out according to 4 months each year, the number of the single-cylinder annual increase flashovers is 3 x 1200 x 120 = 432000, the calculation is carried out according to 30 minutes of the whole vehicle per day, the average rotating speed is 1800rpm, and the number of the single-cylinder ignition is 15 x 60 x 30 x 365 = 9855000 times each year; the number of ignition per cylinder increases per year by a ratio 432000/9855000=4.4% <5%, thus prescribing a spark-over frequency f < 40Hz. The magnetizing time t2 is less than or equal to 2.8ms, the standard magnetizing time of the common ignition coil is about 3ms, and in order to prevent the ignition coil from being damaged in the air spark process, the magnetizing time of each time is set to be less than or equal to 2.8ms. The ignition duration t3 is more than or equal to 30s, and the insulation resistance of the spark plug is increased by 10MΩ and the time is 30s through testing, so that the ignition duration t3 is more than or equal to 30s for ensuring the carbon deposit removal effect. Under the condition, the air spark process can be completed to the maximum extent under the condition that the storage battery is electrified, and carbon deposition on the surface of the spark plug is processed to the maximum extent.
It should be noted that, different vehicle types can continue to lengthen the continuous spark-over time according to the power-down delay time of the whole vehicle, the more obvious the corresponding carbon deposit removal effect is, but the power consumption in the ignition process needs to be calculated, and the power consumption of the storage battery cannot be caused.
Further, in some embodiments, the method of the embodiments of the present application further includes: detecting the whole vehicle parameters of the vehicle; and matching at least one of an empty spark condition, a preset ignition sequence and an exit condition according to the whole vehicle parameters.
That is, in the embodiment of the present application, at least one of the idle spark condition, the preset ignition sequence and the exit condition may be determined by detecting the whole vehicle parameters of the vehicle, and it should be noted that there are various methods for detecting the whole vehicle parameters of the vehicle, so that redundancy is avoided and detailed descriptions are omitted.
In order to further understand the method for preventing carbon deposition of the spark plug according to the embodiment of the present application, the following description will be provided in detail with reference to specific embodiments.
As shown in fig. 4, the method for preventing carbon deposition of the spark plug comprises the following steps:
s401, acquiring a current rotating speed signal n of the vehicle.
S402, judging whether the current rotating speed signal of the vehicle is 0, if so, executing step S403, otherwise, continuing executing the step.
S403, judging whether the vehicle meets the empty spark condition, if yes, executing step S404, otherwise, continuing executing the step.
Wherein, the empty spark-over condition is: the vehicle has no ignition system fault code; the voltage of the storage battery is less than or equal to 12.5V; the ambient temperature is less than or equal to 0 ℃; the water temperature is less than or equal to 70 ℃; the last running time of the engine is in a preset time interval, such as 1-30 minutes; when all are satisfied, step S404 is performed.
S404, the ECU issues a virtual ignition signal to the ignition system.
S405, the ignition system jumps according to the normal ignition sequence of 1-3-4-2.
S406, magnetizing time of the ignition coil is less than or equal to 2.8ms; the ignition frequency is less than or equal to 40Hz; the duration is more than or equal to 30s.
S407, judging whether the vehicle reaches the exit spark-over condition, if so, executing step S408, otherwise, executing the step S. The procedure is continued.
Wherein, the fire exit condition is: for a prescribed duration; the voltage of the storage battery is less than or equal to 11.5v; an ignition system fault code; the rotational speed of the vehicle is more than 0; and triggering the Key-ON gear of the vehicle. When any one of the conditions is satisfied, step S408 is performed.
S408, exiting.
Therefore, in the empty spark action state of the spark plug, accumulated carbon attached to the surface of the insulator is actively cleaned by utilizing the energy of the spark arc, the accumulated carbon accumulation process of the spark plug is relieved, the insulation resistance of the spark plug is continuously increased, the defect that the accumulated carbon cannot be cleaned when the temperature of the spark plug is lower than the self-cleaning temperature is overcome, and the probability that the vehicle is difficult to start and cannot be started due to the accumulated carbon of the spark plug is reduced.
Further, as shown in fig. 5, 5 carbon deposition flooding cylinder fault parts returned by the market are selected, a single spark test is carried out, the normal ignition process of the engine is simulated, the ignition frequency is 40Hz, the magnetizing time is 2.8ms, the ignition energy is 60-70mj, the insulation resistance of the spark plug is detected every 30s, and the influence of the idle spark process on the insulation resistance is verified.
It should be noted that, the initial insulation resistance of the spark plug of the carbon deposition flooding cylinder returned from the market is K omega level, the resistance is obviously reduced, and as the ignition time increases, the insulation resistance of the spark plug shows obvious rising trend, and the average change rate (8-20) K omega/time is shown in fig. 5.
According to the method for preventing carbon deposition of the spark plug, after an engine is stopped, if a vehicle meets an idle sparking condition, a virtual ignition signal is generated, the idle sparking action is executed on the spark plug according to a certain ignition sequence based on the virtual ignition signal, carbon deposition in the spark plug is cleaned by utilizing the generated spark arc, and the idle sparking action is stopped after the exit condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by the additional ignition of the engine in the power stroke of the engine at the initial starting stage of the engine and the specific ignition moment is solved, the spark plug can be cleaned after the engine is stopped, the cleaning degree of the spark plug is improved, a good ignition basis is provided for the next normal starting, and the failure rate of the cold starting flooding problem is reduced.
Further, as shown in fig. 6, an embodiment of the present application also discloses an apparatus 10 for preventing carbon deposition of a spark plug, comprising: a judgment module 100, a generation module 200 and a control module 300.
The judging module 100 is configured to judge whether the vehicle meets an idle spark condition after the engine is stopped, where the idle spark condition includes that a last operation time of the engine is in a preset time interval;
the generating module 200 is configured to generate a virtual ignition signal when the vehicle meets an idle spark condition; and
the control module 300 is configured to perform an idle spark action on the spark plug according to a preset firing order based on the virtual firing signal, clean carbon deposition in the spark plug by using the generated spark arc, and stop the idle spark action after the exit condition is satisfied.
Further, the control module 300 is specifically configured to:
and controlling ignition of the spark plug according to the preset cleaning frequency, the preset cleaning magnetizing time and the preset cleaning duration.
Further, the preset cleaning frequency is less than or equal to 40Hz;
the preset cleaning and magnetizing time is less than or equal to 2.8ms;
the preset cleaning duration is longer than or equal to 30s.
Further, the empty spark-over condition further comprises:
the current environmental temperature of the vehicle is lower than the first temperature threshold value and the water temperature is lower than the second temperature threshold value for a preset time interval.
Further, the empty spark-over condition further comprises:
the ignition system of the vehicle has no fault;
the current voltage of the storage battery is greater than a first preset voltage.
Further, the exit condition includes:
the duration time of the idle spark is longer than the preset duration time;
or the current voltage of the storage battery is smaller than or equal to a second preset voltage;
or, the ignition system fails;
alternatively, the vehicle is started;
alternatively, the rotational speed of the engine is greater than the preset rotational speed.
It should be noted that, the specific implementation manner of the device for preventing carbon deposition on a spark plug according to the embodiment of the present application is similar to the specific implementation manner of the method for preventing carbon deposition on a spark plug, and in order to reduce redundancy, a description is omitted here.
According to the device for preventing carbon deposition of the spark plug, after an engine is stopped, if a vehicle meets an idle sparking condition, a virtual ignition signal is generated, the idle sparking action is executed on the spark plug according to a certain ignition sequence based on the virtual ignition signal, carbon deposition in the spark plug is cleaned by utilizing the generated spark arc, and the idle sparking action is stopped after the exiting condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by the additional ignition of the engine in the power stroke of the engine at the initial starting stage of the engine and the specific ignition moment is solved, the spark plug can be cleaned after the engine is stopped, the cleaning degree of the spark plug is improved, a good ignition basis is provided for the next normal starting, and the failure rate of the cold starting flooding problem is reduced.
Further, an embodiment of the present application discloses a vehicle provided with the device for preventing carbon deposition of a spark plug of the above embodiment. The vehicle solves the problem that the normal operation of the engine is possibly influenced by the additional ignition of the specific ignition moment in the power stroke of the engine at the initial starting stage of the engine, can clean the spark plug after stopping, improves the cleaning degree of the spark plug, provides a good ignition basis for the next normal starting, and reduces the failure rate of the cold starting flooding problem.
Further, an embodiment of the present application discloses a computer-readable storage medium having stored thereon a computer program for execution by a processor for implementing the above method of preventing spark plug carbon deposition
It should be noted that, the specific implementation of the computer readable storage medium according to the embodiment of the present application is similar to the specific implementation of the method for preventing carbon deposition of the spark plug, and in order to reduce redundancy, a description is omitted here.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (10)
1. A method of preventing carbon build-up in a spark plug comprising the steps of:
after the engine is stopped, judging whether the vehicle meets an empty spark condition, wherein the empty spark condition comprises that the last operation time of the engine is in a preset time interval;
generating a virtual ignition signal when the vehicle meets the empty spark condition; and
and based on the virtual ignition signal, performing an idle spark action on the spark plug according to a preset ignition sequence, cleaning carbon deposition in the spark plug by using the generated spark arc, and stopping the idle spark action after the exit condition is met.
2. The method of claim 1, wherein said performing a skip fire action on the spark plug in a predetermined firing order comprises:
and controlling the ignition of the spark plug according to the preset cleaning frequency, the preset cleaning magnetizing time and the preset cleaning duration.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the preset cleaning frequency is less than or equal to 40Hz;
the preset cleaning and magnetizing time is less than or equal to 2.8ms;
the duration of the preset cleaning is longer than or equal to 30s.
4. The method of claim 1, wherein the air-strike condition further comprises:
the current ambient temperature of the vehicle is below a first temperature threshold and the water temperature is below a second temperature threshold.
5. The method of claim 4, wherein the air-strike condition further comprises:
the ignition system of the vehicle has no fault;
the current voltage of the storage battery is greater than a first preset voltage.
6. The method of claim 2, wherein the exit condition comprises:
the duration time of the idle spark is longer than the preset duration time;
or the current voltage of the storage battery is smaller than or equal to a second preset voltage;
or, the ignition system fails;
alternatively, the vehicle is started;
alternatively, the rotational speed of the engine is greater than a preset rotational speed.
7. An apparatus for preventing carbon deposition on a spark plug, comprising:
the judging module is used for judging whether the vehicle meets an empty spark condition after the engine is stopped, wherein the empty spark condition comprises that the last running time of the engine is in a preset time interval;
the generation module is used for generating a virtual ignition signal when the vehicle meets the empty spark condition; and
and the control module is used for executing the idle spark action on the spark plug according to the preset ignition sequence based on the virtual ignition signal, cleaning carbon deposition in the spark plug by utilizing the generated spark arc, and stopping the idle spark action after the exit condition is met.
8. The device according to claim 7, wherein the control module is configured to:
and controlling the ignition of the spark plug according to the preset cleaning frequency, the preset cleaning magnetizing time and the preset cleaning duration.
9. A vehicle, characterized by comprising: a device for preventing carbon deposition on a spark plug as claimed in any one of claims 7 to 8.
10. A computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor for implementing a method of preventing spark plug carbon deposition as claimed in any one of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210016424.1A CN115117736B (en) | 2022-01-07 | 2022-01-07 | Method and device for preventing spark plug from carbon deposition and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210016424.1A CN115117736B (en) | 2022-01-07 | 2022-01-07 | Method and device for preventing spark plug from carbon deposition and vehicle |
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| CN115117736A CN115117736A (en) | 2022-09-27 |
| CN115117736B true CN115117736B (en) | 2023-09-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056496A (en) * | 1989-03-14 | 1991-10-15 | Nippondenso Co., Ltd. | Ignition system of multispark type |
| CN102758716A (en) * | 2012-08-06 | 2012-10-31 | 庄景阳 | Igniter with function of removing spark plug carbon deposition |
| CN206712221U (en) * | 2017-05-08 | 2017-12-05 | 黄永游 | The spark plug of automatic decarbonizing |
| CN107706745A (en) * | 2017-10-26 | 2018-02-16 | 重庆长安汽车股份有限公司 | Spark plug fouling self cleaning method |
| CN108512036A (en) * | 2017-02-28 | 2018-09-07 | 日立汽车***(苏州）有限公司 | Gasoline motor spark plug, its ignition method and its detection method |
-
2022
- 2022-01-07 CN CN202210016424.1A patent/CN115117736B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056496A (en) * | 1989-03-14 | 1991-10-15 | Nippondenso Co., Ltd. | Ignition system of multispark type |
| CN102758716A (en) * | 2012-08-06 | 2012-10-31 | 庄景阳 | Igniter with function of removing spark plug carbon deposition |
| CN108512036A (en) * | 2017-02-28 | 2018-09-07 | 日立汽车***(苏州）有限公司 | Gasoline motor spark plug, its ignition method and its detection method |
| CN206712221U (en) * | 2017-05-08 | 2017-12-05 | 黄永游 | The spark plug of automatic decarbonizing |
| CN107706745A (en) * | 2017-10-26 | 2018-02-16 | 重庆长安汽车股份有限公司 | Spark plug fouling self cleaning method |
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| CN115117736A (en) | 2022-09-27 |
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