CN115117736A - Method and device for preventing carbon deposition of spark plug and vehicle - Google Patents
Method and device for preventing carbon deposition of spark plug and vehicle Download PDFInfo
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- CN115117736A CN115117736A CN202210016424.1A CN202210016424A CN115117736A CN 115117736 A CN115117736 A CN 115117736A CN 202210016424 A CN202210016424 A CN 202210016424A CN 115117736 A CN115117736 A CN 115117736A
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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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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The application relates to the technical field of vehicles, in particular to a method, a device and a vehicle for preventing carbon deposition of a spark plug, wherein the method comprises the following steps: after the engine is stopped, judging whether the vehicle meets a blank fire jumping condition, wherein the blank fire jumping condition comprises that the last running time of the engine is in a preset time interval; generating a virtual ignition signal when the vehicle meets a skip fire condition; and based on the virtual ignition signal, executing a blank sparking 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 blank sparking action after the quitting condition is met. The method solves the problem that the normal operation of the engine is possibly influenced by additional ignition at the initial starting stage of the engine and the specific ignition moment in the power stroke of the engine, can clean the spark plug after shutdown, improves the cleaning degree of the spark plug, provides a good ignition foundation for the next normal starting, and reduces the fault rate of the problem of cylinder flooding in cold starting.
Description
Technical Field
The invention 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
Background
In the actual working process of the engine, the spark plug plays an important role in releasing high-voltage electricity transmitted by the ignition coil, so that mixed gas between the spark plug electrodes is broken down, electric sparks are generated to ignite the mixed gas in the cylinder, and continuous power is provided for a vehicle. Under the 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 deposition can be formed and attached to a ceramic body at the ignition end of the spark plug; in addition, after the spark plug slowly accumulates, the insulation resistance of the spark plug is reduced (generally less than or equal to 10M omega), the spark discharges with the iron shell along the root of the nose end ceramic body through the center electrode, and mixed gas cannot be ignited to cause that the vehicle cannot be started or is difficult to start.
In the related art, the principle that the spark plug arcs burn off the carbon deposit is utilized, and ignition is additionally performed in the engine power stroke at the initial starting stage and specific ignition time of the engine.
However, in the method, in the normal working process of the engine, abnormal operation affects customer perception, and adverse effect is caused; and each time of doing work and adding one ignition, the area of the climbing path of the fire arc relative to the carbon deposit of the spark plug is negligible, and the carbon deposit can be effectively cleaned only through ignition for a period of accumulated time, so that the problem is urgently solved.
Disclosure of Invention
In view of the above, the present invention is directed to a method for preventing carbon deposition on a spark plug, which solves the problem that additional ignition during the power stroke of an engine at a specific ignition time may affect the normal operation of the engine at the initial starting stage of the engine, and can clean the spark plug after shutdown, improve the cleaning degree of the spark plug, provide a good ignition base for the next normal starting, and reduce the failure rate of the problem of cylinder flooding during cold starting.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of preventing soot formation in a spark plug comprising the steps of:
after the engine is stopped, judging whether a vehicle meets a blank spark-over condition, wherein the blank spark-over condition comprises that the last running time of the engine is in a preset time interval;
generating a virtual ignition signal when the vehicle satisfies the empty-trip condition; and
and based on the virtual ignition signal, executing a blank sparking 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 blank sparking action after meeting an exit condition.
Further, the executing the skip fire action to the spark plug according to the preset firing sequence 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.
Further, the preset cleaning frequency is less than or equal to 40 Hz;
the preset cleaning magnetizing time is less than or equal to 2.8 ms;
the preset cleaning duration is more than or equal to 30 s.
Further, the air jumping condition further comprises:
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-jumping condition further comprises:
the ignition system of the vehicle is fault-free;
the current voltage of the storage battery is larger than a first preset voltage.
Further, the exit condition includes:
the duration of the air jumping fire is longer than the preset duration;
or the current voltage of the storage battery is less than or equal to a second preset voltage;
alternatively, the ignition system fails;
alternatively, the vehicle is started;
or the rotating speed of the engine is greater than the preset rotating speed.
Compared with the prior art, the method for preventing the carbon deposition of the spark plug has the following advantages:
according to the method for preventing the carbon deposition of the spark plug, after an engine is stopped, if a vehicle meets a blank-jumping condition, a virtual ignition signal is generated, the blank-jumping action is carried out on the spark plug according to a certain ignition sequence based on the virtual ignition signal, the carbon deposition in the spark plug is cleaned by utilizing the generated spark arc, and the blank-jumping action is stopped after the exit condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by additional ignition at the initial starting stage of the engine and at the specific ignition moment in the power stroke of the engine is solved, the spark plug can be cleaned after being stopped, the cleaning degree of the spark plug is improved, a good ignition foundation is provided for the next normal starting, and the fault rate of the problem of cylinder flooding in cold starting is reduced.
The invention also aims to provide a device for preventing carbon deposition of the spark plug, which solves the problem that the normal operation of the engine is possibly influenced by additional ignition at 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 shutdown, improves the cleaning degree of the spark plug, provides a good ignition foundation for the next normal starting and reduces the fault rate of the problem that the cylinder is flooded in cold starting.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an apparatus for preventing soot formation in a spark plug, comprising:
the judging module is used for judging whether a vehicle meets a blank spark-over condition after the engine is stopped, wherein the blank spark-over condition comprises that the last running time of the engine is in a preset time interval;
the generating module is used for generating a virtual ignition signal when the vehicle meets the air jump fire condition; and
and the control module is used for executing a blank sparking action on the spark plug according to a preset ignition sequence based on the virtual ignition signal, clearing carbon deposition in the spark plug by utilizing the generated spark arc, and stopping the blank sparking action after meeting an exit condition.
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 40 Hz;
the preset cleaning magnetizing time is less than or equal to 2.8 ms;
the preset cleaning duration is more than or equal to 30 s.
Further, the skip fire 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 skip fire condition further includes:
the ignition system of the vehicle is fault-free;
the current voltage of the storage battery is larger than a first preset voltage.
Further, the exit condition includes:
the duration of the air jumping fire is longer than the preset duration;
or the current voltage of the storage battery is less than or equal to a second preset voltage;
alternatively, the ignition system is malfunctioning;
alternatively, the vehicle is started;
or the rotating speed of the engine is greater than the preset rotating speed.
Compared with the prior art, the device for preventing the spark plug from being deposited with carbon has the same advantages as the method for preventing the spark plug from being deposited with carbon, and the detailed description is omitted.
Another object of the present invention is to provide a vehicle, which solves the problem that additional ignition during the engine power stroke at a specific ignition time may affect the normal operation of the engine at the initial starting stage of the engine, and can clean the spark plug after the engine is stopped, improve the cleaning degree of the spark plug, provide a good ignition base for the next normal starting, and reduce the failure rate of the cold start cylinder flooding problem.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vehicle is provided with the device for preventing carbon deposition of a spark plug as described in the above embodiment.
The vehicle and the device for preventing the carbon deposition of the spark plug have the same advantages compared with the prior art, and the detailed description is omitted.
Another object of the present invention is to provide a computer-readable storage medium.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a computer-readable storage medium, on which a computer program is stored, the computer program being executed by a processor for implementing the above-mentioned method for preventing soot formation of a spark plug.
The computer readable storage medium has the same advantages as the above method for preventing the spark plug from carbon deposition, compared with the prior art, and the detailed description is omitted here.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method of preventing soot formation in a spark plug according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a spark plug according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the relationship between the open circuit sparking time and the insulation resistance according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method of preventing soot formation in a spark plug according to one embodiment of the present invention;
FIG. 5 is a graphical representation of the results of a spark plug treatment for a carbon deposition flooded cylinder in accordance with one embodiment of the present invention;
FIG. 6 is a block diagram of an apparatus for preventing soot deposition in a spark plug according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is a flow chart of a method of preventing soot formation in a spark plug according to an embodiment of the present invention.
Before describing the method for preventing soot formation of a spark plug according to the embodiment of the present application, the spark plug and the cause of the soot formation in 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, a center electrode 5; the spark plug shell is provided with an annular step part 1 and a thread part 2, and the spark plug can be fixed through the thread part 2; the ignition function of the spark plug is realized 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, the lowest end of the insulator is provided with a radius, the shell of the spark plug is provided with an annular step part 1, the outermost side of the insulator at the position is farthest away from the center electrode, the distance between the insulator and the main body of the spark plug is minimum, carbon deposition can be formed on the conical surface of the insulator and the lowest end of the insulator in the ignition and fuel combustion processes of the spark plug, and due to the generation of the carbon deposition, the center electrode and the shell of the spark plug can be conducted to form discharge at the minimum position of the insulator and the shell of the spark plug, so that fire can be generated; if the self-cleaning temperature (400 ℃) of the spark plug is reached in the process of long-time running of the engine, the carbon molecules are burnt by utilizing the temperature of the insulator of the spark plug; however, if 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 deposition cannot be burnt in time, the insulation resistance of the spark plug is reduced (generally less than or equal to 10M omega) after the carbon deposition is accumulated slowly, sparks are discharged with the iron shell along the root part of the nose end ceramic body through the center electrode, and 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 in a spark plug, wherein after an engine is shut down, if a vehicle meets a misfire condition, a virtual ignition signal is generated, a misfire action is performed on the spark plug according to a certain ignition sequence based on the virtual ignition signal, the generated spark arc is used to clean the carbon deposition in the spark plug, and the misfire action is stopped after a quit condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by additional ignition at the initial starting stage of the engine and at the specific ignition moment in the power stroke of the engine is solved, the spark plug can be cleaned after being stopped, the cleaning degree of the spark plug is improved, a good ignition foundation is provided for the next normal starting, and the fault rate of the problem of cylinder flooding in cold starting is reduced.
Specifically, as shown in fig. 1, the method for preventing carbon deposition of the spark plug according to the embodiment of the invention comprises the following steps:
and S101, judging whether the vehicle meets a misfire condition after the engine is stopped, wherein the misfire condition comprises that the last running time of the engine is in a preset time interval.
The preset duration interval may be a duration interval preset by a user, a duration interval obtained through a limited number of experiments, or a duration interval obtained through a limited number of computer simulations, and is not specifically limited herein. Preferably, the preset time interval is 1-30 minutes.
Specifically, according to the embodiment of the application, after the vehicle is turned OFF when the OFF gear is turned OFF, the main relay is powered OFF in a delayed mode, and if an ECU (Electronic Control Unit) monitors that the engine speed is 0 (namely, the engine is stopped), and the last running time of the engine is within 1-30 minutes (different vehicle types can adjust the last running time range according to the water temperature rising time), it is determined that the idle trip condition is met.
Further, in some embodiments, the misfire 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 simulations, and preferably, the first temperature threshold is 0 ℃ and the second temperature threshold is 70 ℃.
Specifically, after the engine is stopped, when judging whether the vehicle meets the empty fire jumping condition, the embodiment of the application also needs to judge the current ambient temperature and the current water temperature of the vehicle. That is, after the vehicle is turned to an OFF gear and is flamed out, the main relay is powered OFF in a delayed mode, if the ECU monitors that the rotating speed of the engine is 0, the last running time of the engine is within 1-30 minutes (different vehicle types can adjust the last running time range according to the water temperature rising time), the environment temperature is lower than 0 ℃ and the water temperature is lower than 70 ℃, and the condition of idle fire jumping is judged to be met.
Further, the skip fire condition further comprises: the ignition system of the vehicle is not in fault; the current voltage of the storage battery is larger than the first preset voltage.
The first preset voltage may be a voltage preset by a user, may be a voltage obtained through a limited number of experiments, and may also be a voltage obtained through a limited number of computer simulations, and preferably, the first preset voltage is 12.5V.
That is to say, in the embodiment of the application, after the engine is stopped, when judging whether the vehicle meets the idle-trip fire condition, the ignition system of the vehicle needs to be judged. That is, after the vehicle is turned to an OFF gear and flamed out, the main relay is powered OFF in a delayed mode, if the ignition system has no fault, and the ECU monitors that the rotating speed of the engine is 0, the voltage of the storage battery is greater than 12.5V, the last running time of the engine is within 1-30 minutes (different vehicle types can adjust the last running time range according to the rising time of water temperature), and the ambient temperature is lower than 0 ℃ and the water temperature is lower than 70 ℃, the condition of idle fire jumping is determined to be met.
In addition, as shown in fig. 3, considering that the whole vehicle empty sparking function is mainly applied to the normal working period of the spark plug (the insulation resistance is more than or equal to 10M Ω), the resistance change is analyzed according to the sparking process of the spark plug with the insulation resistance of more than 10M Ω, the time for the insulation resistance of the spark plug to rise by 10M Ω is less than 30s, and the single-cylinder sparking frequency is 1200 times. And step S102, when the vehicle meets the empty spark-over condition, generating a virtual ignition signal.
That is, if the vehicle satisfies the misfire condition, the ECU may send a virtual ignition signal to the ignition coil to perform the misfire action of the ignition plug.
And step S103, based on the virtual ignition signal, executing a blank jump 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 blank jump action after meeting an exit condition.
Further, in some embodiments, performing a skip fire action on the spark plugs in accordance with a preset firing 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.
Preferably, in some embodiments, further, the preset cleaning frequency is less than or equal to 40 Hz; presetting the cleaning and magnetizing time to be less than or equal to 2.8 ms; the preset cleaning duration is greater than or equal to 30 s.
Wherein, in some embodiments, the exit condition comprises: the duration of the air jumping fire is longer than the preset duration; or the current voltage of the storage battery is less than or equal to a second preset voltage; alternatively, the ignition system fails; or, starting the vehicle (such as triggering a vehicle Key-ON gear); alternatively, the rotation speed of the engine is greater than a preset rotation speed (e.g., the preset rotation speed is 0).
The preset ignition sequence can be a sequence preset by a user, can be a sequence obtained through limited experiments, and can also be a sequence obtained through limited computer simulation; the preset duration can be a duration preset by a user, can be a duration obtained through limited experiments, and can also be a duration obtained through limited computer simulation; the second preset voltage may be a voltage preset by a user, may be a voltage obtained through a limited number of experiments, or may be a voltage obtained through a limited number of computer simulations; the preset rotation speed may be a rotation speed preset by a user, may be a rotation speed obtained through a limited number of experiments, or may be a rotation speed obtained through a limited number of computer simulations, and is not specifically limited herein.
It should be understood that the ECU sends a virtual ignition signal to the ignition coil, and when the spark plug performs the skip fire action, the spark plug skips fire according to a certain frequency, a certain magnetizing time, a certain duration and a normal ignition cycle, such as a 4-cylinder engine, and the skip fire sequence is 1-3-4-2. The frequency f of the empty sparking is less than or equal to 40Hz, the hardware of the ignition system is evaluated, and the number of the empty sparking accounts for less than or equal to 5 percent of the total sparking, so that the use requirement of the reliability of related parts can be met; triggering 3 times of air spark every day, triggering at the ambient temperature of less than or equal to 0 ℃, calculating according to 4 months every year, increasing the spark number of single cylinder by 3X 1200X 120-432000 times every year, operating the whole vehicle for 30min every day, calculating the average rotating speed of 1800rpm, and igniting the single cylinder by 15X 60X 30-365-9855000 times every year; the proportion 432000/9855000 of the number of ignitions increased per cylinder per year is 4.4% < 5%, so that the sparking frequency f is regulated to be less than or equal to 40 Hz. The magnetizing time t2 is less than or equal to 2.8ms, the standard magnetizing time of a common ignition coil is about 3ms, and in order to prevent the ignition coil from being damaged in the process of air flashover, the magnetizing time of each time is set to t2 less than or equal to 2.8 ms. The ignition duration t3 is more than or equal to 30s, the insulation resistance of the spark plug is increased by 10 MOmega through testing, and the ignition duration t3 is more than or equal to 30s when the ignition duration is 30s, so that the carbon cleaning effect is ensured. Under the condition, the blank-fire process can be completed to the maximum extent under the condition that the storage battery is electrified, and the carbon deposit on the surface of the spark plug can be treated to the maximum extent.
It should be noted that different vehicle types can continue to lengthen the continuous flashover time according to the vehicle power-off delay time, the corresponding carbon removal effect is more obvious, but the power consumption in the ignition process needs to be calculated, and the power shortage of the storage battery cannot be caused.
Further, in some embodiments, the method of the embodiments of the present application, further includes: detecting vehicle parameters of a vehicle; and matching at least one of a blank jump condition, a preset ignition sequence and an exit condition according to the parameters of the whole vehicle.
That is to say, in the embodiments of the present application, at least one of the empty skip fire condition, the preset ignition sequence and the exit condition may be determined by detecting the vehicle parameters of the vehicle, it should be noted that there are many methods for detecting the vehicle parameters of the vehicle, and detailed descriptions are not provided herein to avoid redundancy.
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 detailed description is provided with reference to specific embodiments.
As shown in FIG. 4, the method for preventing the 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 a step S403, otherwise, continuing to execute the step.
And S403, judging whether the vehicle meets a misfire condition, if so, executing the step S404, otherwise, continuing to execute the step.
Wherein, the condition of empty fire jumping is as follows: a vehicle non-ignition system fault code; the voltage of the storage battery is less than or equal to 12.5V; the environmental 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 executed.
S404, the ECU issues a virtual ignition signal to the ignition system.
And S405, the ignition system carries out spark-over according to the 1-3-4-2 normal ignition sequence.
S406, the magnetizing time of the ignition coil is less than or equal to 2.8 ms; the ignition frequency is less than or equal to 40 Hz; the duration is more than or equal to 30 s.
S407, judging whether the vehicle reaches a spark-over quitting condition, if so, executing a step S408, otherwise. The process continues to this step.
Wherein, the conditions for quitting the flashover are as follows: reaching a specified duration; the voltage of the storage battery is less than or equal to 11.5 v; an ignition system fault code; the rotating speed of the vehicle is greater than 0; and triggering a vehicle Key-ON gear. When any one of the conditions is satisfied, step S408 is executed.
And S408, exiting.
Therefore, under the idle-tripping action state of the spark plug, the carbon deposit attached to the surface of the insulator is actively cleaned by utilizing the energy of the spark arc, the carbon deposit accumulation process of the spark plug is relieved, the insulation resistance of the spark plug is continuously increased, the defect that the carbon deposit cannot be removed 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 carbon deposit of the spark plug is reduced.
Further, as shown in fig. 5, 5 carbon deposition flooding cylinder fault pieces returned from the market are selected, a single flashover 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 flashover process on the insulation resistance is verified.
It should be noted that the initial insulation resistance of the spark plug of the cylinder flooded by carbon deposition returned by the market is in the K Ω level, the resistance is obviously reduced, and as can be seen from fig. 5, the insulation resistance of the spark plug shows an obvious rising trend along with the increase of the ignition time, and the average change rate is (8-20) K Ω/time.
According to the method for preventing the carbon deposition of the spark plug, after the engine is stopped, if the vehicle meets the idle-trip condition, the virtual ignition signal is generated, the idle-trip action is executed on the spark plug according to a certain ignition sequence based on the virtual ignition signal, the carbon deposition in the spark plug is cleaned by utilizing the generated spark arc, and the idle-trip action is stopped after the quit condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by additional ignition at the initial starting stage of the engine and at the specific ignition moment in the power stroke of the engine is solved, the spark plug can be cleaned after being stopped, the cleaning degree of the spark plug is improved, a good ignition foundation is provided for the next normal starting, and the fault rate of the problem of cylinder flooding in cold starting is reduced.
Further, as shown in fig. 6, the embodiment of the present invention also discloses a device 10 for preventing carbon deposition of a spark plug, which includes: a judging module 100, a generating module 200 and a control module 300.
The judging module 100 is configured to judge whether a vehicle meets a misfire condition after the engine is shut down, where the misfire condition includes that the last operation time of the engine is in a preset time interval;
the generation module 200 is configured to generate a virtual ignition signal when the vehicle meets a misfire condition; and
the control module 300 is configured to execute a blank sparking action on the spark plug according to a preset ignition sequence based on the virtual ignition signal, clean carbon deposition in the spark plug by using the generated arcing, and stop the blank sparking action after an exit condition is met.
Further, the control module 300 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.
Furthermore, the preset cleaning frequency is less than or equal to 40 Hz;
presetting the cleaning and magnetizing time to be less than or equal to 2.8 ms;
the preset cleaning duration is greater than or equal to 30 s.
Further, the empty-fire-jumping condition further comprises:
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 empty-fire-jumping condition further comprises:
the ignition system of the vehicle is fault-free;
the current voltage of the storage battery is larger than the first preset voltage.
Further, the exit condition includes:
the duration of the air jumping fire is longer than the preset duration;
or the current voltage of the storage battery is less than or equal to a second preset voltage;
alternatively, the ignition system fails;
alternatively, the vehicle is started;
alternatively, the rotational speed of the engine is greater than a preset rotational speed.
It should be noted that the specific implementation manner of the device for preventing carbon deposition of the spark plug according to the embodiment of the present invention is similar to the specific implementation manner of the method for preventing carbon deposition of the spark plug, and in order to reduce redundancy, no further description is given here.
According to the device for preventing carbon deposition of the spark plug, after an engine is stopped, if a vehicle meets the idle-jump condition, a virtual ignition signal is generated, the idle-jump action is performed on the spark plug according to a certain ignition sequence based on the virtual ignition signal, the generated spark arc is used for cleaning the carbon deposition in the spark plug, and the idle-jump action is stopped after the exit condition is met. Therefore, the problem that the normal operation of the engine is possibly influenced by additional ignition at the initial starting stage of the engine and at the specific ignition moment in the power stroke of the engine is solved, the spark plug can be cleaned after being stopped, the cleaning degree of the spark plug is improved, a good ignition foundation is provided for the next normal starting, and the fault rate of the problem of cylinder flooding in cold starting is reduced.
Further, an embodiment of the invention discloses a vehicle provided with the device for preventing carbon deposition of the spark plug of the above embodiment. The vehicle is provided with the device, so that the problem that the normal operation of the engine is possibly influenced by additional ignition at the specific ignition moment in the power stroke of the engine at the initial starting stage of the engine 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 foundation is provided for the next normal starting, and the fault rate of the problem that the cylinder is flooded in cold starting is reduced.
Further, an embodiment of the present invention discloses a computer-readable storage medium having a computer program stored thereon, the computer program being executed by a processor for implementing the above-mentioned method for preventing soot formation of a spark plug
It should be noted that the specific implementation manner of the computer-readable storage medium according to the embodiment of the present invention is similar to the specific implementation manner of the method for preventing carbon deposition of the spark plug, and in order to reduce redundancy, no further description is provided herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method of preventing soot deposition in a spark plug, comprising the steps of:
after the engine is stopped, judging whether a vehicle meets a blank spark-over condition, wherein the blank spark-over condition comprises that the last running time of the engine is in a preset time interval;
generating a virtual ignition signal when the vehicle meets the air-jumping condition; and
and based on the virtual ignition signal, performing a blank-jumping action on the spark plug according to a preset ignition sequence, cleaning carbon deposit in the spark plug by using the generated fire arc, and stopping the blank-jumping action after meeting an exit condition.
2. The method of claim 1, wherein said performing a skip fire action on a spark plug in accordance with a predetermined firing sequence 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,
the preset cleaning frequency is less than or equal to 40 Hz;
the preset cleaning magnetizing time is less than or equal to 2.8 ms;
the preset cleaning duration is more than or equal to 30 s.
4. The method of claim 1, wherein the null-jump 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 null-jump condition further comprises:
the ignition system of the vehicle is fault-free;
the current voltage of the storage battery is larger than a first preset voltage.
6. The method of claim 2, wherein the exit condition comprises:
the duration of the empty flashover is longer than the preset duration;
or the current voltage of the storage battery is less than or equal to a second preset voltage;
alternatively, the ignition system fails;
alternatively, the vehicle is started;
or the rotating speed of the engine is greater than the preset rotating speed.
7. An apparatus for preventing soot deposition in a spark plug, comprising:
the judging module is used for judging whether a vehicle meets a blank spark-over condition after the engine is stopped, wherein the blank spark-over condition comprises that the last running time of the engine is in a preset time interval;
the generating module is used for generating a virtual ignition signal when the vehicle meets the air jump fire condition; and
and the control module is used for executing a blank sparking action on the spark plug according to a preset ignition sequence based on the virtual ignition signal, clearing carbon deposition in the spark plug by utilizing the generated spark arc, and stopping the blank sparking action after meeting an exit condition.
8. The apparatus of claim 7, wherein 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.
9. A vehicle, characterized by comprising: the device for preventing soot formation of a spark plug according to any one of claims 7 to 8.
10. A computer-readable storage medium, on which a computer program is stored, the computer program being executed by a processor for implementing the method for preventing soot formation of a spark plug according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 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 true CN115117736A (en) | 2022-09-27 |
| CN115117736B 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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| CN115117736B (en) | 2023-09-12 |
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