CN111946524A - Method and device for controlling internal combustion engine, and computer-readable storage medium - Google Patents
Method and device for controlling internal combustion engine, and computer-readable storage medium Download PDFInfo
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- CN111946524A CN111946524A CN201910399299.5A CN201910399299A CN111946524A CN 111946524 A CN111946524 A CN 111946524A CN 201910399299 A CN201910399299 A CN 201910399299A CN 111946524 A CN111946524 A CN 111946524A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 230000005856 abnormality Effects 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 abstract description 34
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 15
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 6
- 239000002283 diesel fuel Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 4
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/089—Safety, indicating, or supervising devices relating to engine temperature
-
- 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
- Y02T10/12—Improving ICE efficiencies
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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)
Abstract
A control method and a device of an internal combustion engine and a computer readable storage medium, wherein the internal combustion engine comprises N glow plugs arranged on a cylinder cover of the internal combustion engine, and N is more than or equal to 2; the control method of the internal combustion engine includes: and when the starting of the internal combustion engine is detected, controlling the N glow plugs to be started alternately, and when the N glow plugs are started alternately, at least two glow plugs work together for a preset time. By adopting the scheme, the ignition of the fuel in the internal combustion engine is facilitated, so that the problem of difficult combustion can be avoided, and the effectiveness of continuous working of the glow plug can be ensured.
Description
Technical Field
The embodiment of the invention relates to the technical field of vehicles, in particular to a control method and device of an internal combustion engine and a computer readable storage medium.
Background
An internal combustion engine is a power machine, which is a heat engine that burns fuel inside the machine and directly converts the heat energy released by the fuel into power. Internal combustion engines are widely used in various industries of national economy, such as automobiles, agricultural machinery, engineering machinery, ships, trains, aviation, ships, war vehicles and the like.
The ignition mode of an internal combustion engine is usually compression ignition, and when the pressure in a cylinder of the internal combustion engine reaches a certain pressure, the gas mixed with fuel self-ignites.
However, with compression ignition to ignite the fuel, the fuel is not readily ignited when the engine is cold started.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is difficult combustion.
In order to solve the above-described technical problem, an embodiment of the present invention provides a control method of an internal combustion engine including N glow plugs provided on a cylinder head of the internal combustion engine, the control method including: and when the starting of the internal combustion engine is detected, controlling the N glow plugs to be started alternately, and when the N glow plugs are started alternately, at least two glow plugs work together for a preset time.
Optionally, the internal combustion engine comprises: the first glow plug and the second glow plug, control N glow plug starts in turn, and when N glow plug starts in turn, at least two glow plugs work jointly for the preset duration, include: after any one of the first glow plug and the second glow plug is started, the other one of the first glow plug and the second glow plug continues to work for a first period of time and then is turned off.
Optionally, after controlling the first glow plug and the second glow plug to be activated alternately, the method further includes: and adjusting the power of the started glow plug according to the real-time working condition of the engine.
Optionally, the adjusting the power of the activated glow plug includes any one of: adjusting the power of the started glow plug by adjusting the frequency and the duty ratio of the PWM pulse wave; and adjusting the power of the started glow plug by adjusting the duty ratio of the PWM pulse wave.
Optionally, the operating condition of the engine is positively correlated with the power of the first glow plug or the second glow plug.
Optionally, when any one of the glow plugs is detected to be abnormal, the abnormal glow plug is closed, and the operation of other glow plugs is switched to in real time.
Optionally, when an abnormality of any glow plug is detected, the method further includes: and sending out an alarm prompt.
An embodiment of the present invention further provides an internal combustion engine, including: n are set up in N glow plugs on the cylinder head of internal-combustion engine, N is greater than or equal to 2, with N glow plug all the coupled controller, wherein: the controller is adapted to control the N glow plugs to be alternately activated when the start of the internal combustion engine is detected, and at least two of the glow plugs are operated together for a preset time period when the N glow plugs are alternately activated.
Optionally, the internal combustion engine comprises: the controller is suitable for being closed after the other one of the first glow plug and the second glow plug continues to work for a first time after any one of the first glow plug and the second glow plug is started.
Optionally, the controller is further adapted to control the power of the activated glow plug to be adjusted according to a real-time working condition of the engine after the first glow plug and the second glow plug are alternately activated.
Optionally, the controller is adapted to adjust the power of the started glow plug by adjusting the frequency and duty ratio of the PWM pulse wave; or, the power of the started glow plug is adjusted by adjusting the duty ratio of the PWM pulse wave.
Optionally, the operating condition of the engine is positively correlated with the power of the first glow plug or the second glow plug.
Optionally, the controller is further adapted to, when detecting that any one of the glow plugs is abnormal, turn off the abnormal glow plug, and switch to another glow plug to operate in real time.
Optionally, the internal combustion engine further comprises an alarm unit adapted to give an alarm prompt when an abnormality of any one of the glow plugs is detected.
The embodiment of the present invention further provides another internal combustion engine, which includes a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform the steps of any one of the above-mentioned internal combustion engine control methods.
Embodiments of the present invention further provide a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon computer instructions, where the computer instructions, when executed, perform the steps of any one of the above-mentioned control methods for an internal combustion engine.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the internal combustion engine includes N glow plugs. After the internal combustion engine is started, the N glow plugs are controlled to be started alternately, and when the N glow plugs are started alternately, at least two glow plugs work together for a preset time, namely at least one glow plug works, so that ignition of fuel is facilitated, and the problem of difficult combustion can be avoided.
Drawings
Fig. 1 is a flowchart of a control method of an internal combustion engine in an embodiment of the invention;
fig. 2 is a schematic view of a part of the structure of an internal combustion engine in one embodiment of the present invention.
Detailed Description
As described above, the fuel is ignited by compression ignition, and when the internal combustion engine is in cold start, the fuel is not easily ignited.
In an embodiment of the invention, the internal combustion engine comprises N glow plugs. After the internal combustion engine is started, the N glow plugs are controlled to be alternately started, and when the N glow plugs are switched, and the N glow plugs are controlled to be alternately started, at least two glow plugs work together for a preset time, namely at least one glow plug works, so that ignition of fuel is facilitated, and the problem of difficult combustion can be avoided.
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, specific embodiments accompanied with figures are described in detail below.
The internal combustion engine provided by the embodiment of the invention can burn not only traditional diesel fuel, but also low-viscosity fuel, such as alternative fuel and gasoline, such as methanol, ethanol, dimethyl ether and the like, and the alternative fuel has the advantages of high energy efficiency, low pollution, low cost, diversified energy sources and safe energy sources, so the internal combustion engine has good application prospect. It should be noted that, in the embodiment of the present invention, the low viscosity fuel refers to a fuel having a viscosity smaller than that of diesel fuel.
It has been found that the starting difficulty when using alternative fuels for diesel internal combustion engines (such as methanol, ethanol, dimethyl ether, etc.) is due to: the alternative fuel and diesel oil have differences in physical and chemical properties such as cetane number and latent heat of vaporization. In the case of an alternative fuel having a large latent heat of vaporization and a low cetane number, such as methanol, which is injected into the cylinder, a large amount of heat is absorbed, so that the temperature of the air-fuel mixture in the cylinder is drastically lowered, the concentration of the alternative fuel in a gaseous state in the air-fuel mixture is drastically lowered, only a small amount of the fuel is vaporized, and a part of the foggy fuel adheres to the cylinder wall or other parts of the internal combustion engine, so that the fuel near the cylinder wall is not sufficiently combusted, and therefore, the startability of the internal combustion engine is poor.
In order to solve the problems, the internal combustion engine provided by the embodiment of the invention can be provided with N glow plugs, wherein N is more than or equal to 2. For example, the internal combustion engine may be provided with 2, 3, or other numbers of glow plugs.
In a specific implementation, when the start of the internal combustion engine is detected, a computer, a controller and the like can be adopted to control the N glow plugs to be started alternately, and when the N glow plugs are started alternately, at least two glow plugs work together for a preset time.
For example, an internal combustion engine includes 3 glow plugs, glow plug a, glow plug B, and glow plug C, respectively. After the internal combustion engine is started, the glow plug A is started, the electric glow plug B is started after the glow plug A works for a certain time, the glow plug A and the glow plug B work together for a certain time, and the glow plug A is closed when the temperature rise condition and the power of the glow plug B reach the ignition condition of the working condition of the engine. And when the temperature rise condition and the power of the glow plug C reach the engine working condition ignition condition, the glow plug B is closed. And when the temperature rise condition and the power of the glow plug A reach the engine working condition ignition condition, the glow plug C is closed. And in the same way, the glow plug A, the glow plug B and the glow plug C are alternately started in the working process of the internal combustion engine until the internal combustion engine stops.
For another example, the internal combustion engine includes 4 glow plugs, which are glow plug a, glow plug B, glow plug C, and glow plug D, respectively. After the internal combustion engine is started, the glow plug A and the glow plug B are started, and after the glow plug A and the glow plug B work for a certain time, the electric glow plug C and the glow plug D are started. After the glow plug A, the glow plug B, the glow plug C and the glow plug D work together for a certain time, when the temperature rise condition and the power of the electric glow plug C and the glow plug D reach the engine working condition ignition condition, the glow plug A and the glow plug B are turned off. And when the glow plug C and the glow plug D work for a certain time, starting the electric glow plug A and the glow plug B. After the glow plug A, the glow plug B, the glow plug C and the glow plug D work together for a certain time, when the temperature rise condition and the power of the electric glow plug A and the glow plug B reach the engine working condition ignition condition, the glow plug C and the glow plug D are closed. And in the same way, the glow plug A, the glow plug B, the glow plug C and the glow plug D are alternately started in the working process of the internal combustion engine until the internal combustion engine stops.
It can be understood that when the number of the glow plugs is greater than or equal to 3, the glow plugs can have a plurality of different alternative starting modes, and when the N glow plugs are required to be started alternatively, at least two glow plugs work together for a preset time, which can be specifically set according to the actual application requirements.
The control method of the internal combustion engine will be described below taking as an example that one of the cylinders of the internal combustion engine is provided with 2 glow plugs, i.e., a first glow plug and a second glow plug. The first glow plug and the second glow plug are located on a cylinder head of the internal combustion engine and extend into a cylinder.
Referring to fig. 1, a flowchart of a control method of an internal combustion engine in an embodiment of the present invention is given. The method specifically comprises the following steps:
and step 11, controlling the first glow plug and the second glow plug to be started alternately when the starting of the internal combustion engine is detected.
In specific implementation, when the electronic control main switch of the internal combustion engine is detected to be switched on and started, the first glow plug and the second glow plug can be controlled to be started alternately. For example, when the internal combustion engine is started, the first glow plug is controlled to be started, and then the second glow plug is controlled to be started. For another example, when the internal combustion engine is started, the second glow plug is controlled to start, and then the first glow plug is controlled to start, so that the working process of the whole internal combustion engine is repeatedly and continuously cycled.
In the embodiment of the invention, the first glow plug and the second glow plug can be controlled to be alternately started according to the time length. After the first glow plug is started to work for a period of time, starting a second glow plug; alternatively, the first glow plug is activated after the second glow plug has been activated for a period of time, thus cycling through the entire engine operation.
And 12, after any one of the first glow plug and the second glow plug is started to work, the other one of the first glow plug and the second glow plug is closed after the other one of the first glow plug and the second glow plug continues to work for a first time.
In specific implementation, after the first glow plug works for a period of time, the second glow plug is started, the common working time of the first glow plug and the second glow plug is monitored, when the common working time of the first glow plug and the second glow plug reaches a preset first time, the first glow plug is closed, and in the same way, the first glow plug and the second glow plug are alternately started until the internal combustion engine is stopped.
Correspondingly, after the second glow plug works for a period of time, the first glow plug is started, the common working time of the second glow plug and the first glow plug is monitored, and after the common working time of the second glow plug and the first glow plug reaches a preset second time, the second glow plug is closed, wherein the values of the first time and the second time can be the same or different.
The first glow plug or the second glow plug can provide heat energy when working, the foggy fuel sprayed into the cylinder can be quickly evaporated in the air flow and is fully mixed with the air in the cylinder to form mixed gas, and the mixed gas is combusted under the combustion supporting action of the first glow plug or the second glow plug. Because the first glow plug and the second glow plug of the internal combustion engine provided by the embodiment of the invention are alternately started, and the first glow plug and the second glow plug work together for a certain time, the power of the later-started glow plug can be stable, so that the later-started glow plug can still provide corresponding heat energy and can normally ignite fuel even after the first-started glow plug is closed, and therefore, when the internal combustion engine burns alternative fuels (such as methanol, ethanol, dimethyl ether and the like) with low viscosity and gasoline, the difference between the physicochemical properties of the alternative fuels, such as cetane number, latent heat of vaporization and the like, and diesel can be compensated, and the internal combustion engine can be smoothly started under any working condition.
According to the scheme, the internal combustion engine comprises N glow plugs. After the internal combustion engine is started, the N glow plugs are controlled to be started alternately, and when the N glow plugs are started alternately, at least two glow plugs work together for a preset time, namely at least one glow plug works, so that ignition of fuel is facilitated, the problem of difficult combustion can be avoided, and the effectiveness of continuous working of the glow plugs can be ensured.
In addition, because at least one glow plug in the internal combustion engine is always in the working state, the fuel is not required to be ignited by adopting a compression ignition mode. Therefore, the internal combustion engine provided by the embodiment of the invention can burn not only traditional diesel fuel, but also low-viscosity fuel, such as alternative fuel of methanol, ethanol, dimethyl ether and the like and gasoline.
Furthermore, the first glow plug and the second glow plug are set to work alternately, so that the working stability of the internal combustion engine can be improved, and the service lives of the first glow plug, the second glow plug and the internal combustion engine can be prolonged.
In the embodiment of the invention, the power and the temperature of the started glow plug can be adjusted according to the working condition of the engine, so that the ignition of fuels such as methanol, ethanol, dimethyl ether and the like which are difficult to ignite, liquid fuels such as diesel oil, gasoline liquefied gas, natural gas and the like, different fuels such as gas and the like, and the ignition temperatures required by the ignition of different working conditions can be met.
In specific implementation, the power and temperature of one of the first glow plug and the second glow plug can be adjusted according to the real-time working condition of the engine, and the power or temperature of the first glow plug and the second glow plug can also be adjusted at the same time.
In the embodiment of the invention, the power or the temperature of the started glow plug can be adjusted by adjusting the frequency and the duty ratio of the PWM pulse wave; the power of the activated glow plug can also be adjusted by adjusting the duty cycle of the PWM pulse wave. In particular implementations, the operating condition of the engine and the power or temperature of the first glow plug or the second glow plug may be positively correlated.
For example, at the time of cold start, a Pulse Width Modulation (PWM) Pulse wave is output. And adjusting the output quantitative power duty ratio, frequency and the like of the PWM pulse wave according to the working condition state of the engine, heating the first glow plug and monitoring the temperature rise condition and power of the first glow plug. When the first glow plug is heated for a certain time, when the ignition condition of the engine working condition is reached, the output quantitative power duty ratio of the PWM pulse wave is gradually adjusted, and the first glow plug continuously operates after the output quantitative power duty ratio of the PWM pulse wave corresponding to the first glow plug is adjusted again according to the working condition of the engine.
When the first glow plug works for a certain time from the starting, the second glow plug is started. When the second glow plug is started, the duty ratio and the frequency of the output quantitative power of the PWM pulse wave are set according to the working condition state of the engine, the second glow plug is heated, and the temperature rise condition and the power of the second glow plug are monitored. When the second glow plug is heated for a certain time to reach the engine working condition ignition condition, namely the first glow plug and the second glow plug work together for a first time, at the time, after the working time of the first glow plug reaches the set working time, the PWM pulse wave output quantitative power duty ratio of the first glow plug is adjusted to 0, namely the first glow plug is closed. At the moment, according to the working condition state of the engine, the duty ratio, the frequency and the like of the PWM pulse wave output quantitative power corresponding to the second glow plug are gradually adjusted again. And then continuously running and operating according to the working condition state of the engine. And in the same way, the first glow plug and the second glow plug are alternately started until the engine is normally stopped. It can be understood that the specific values of the working time of the first glow plug, the second glow plug, and the like, the PWM pulse wave output quantitative power duty ratio, the frequency, and the like may be different according to different practical application scenarios such as the engine operating condition, and the like, and the specific values are not limited herein.
In specific implementation, when the operating conditions of the engine are different, the PWM pulse wave outputs different quantitative power duty ratios, frequencies and the like according to the operating condition states of the engine, namely, the powers of the corresponding started glow plugs are different. For example, at 1500 rpm, the output duty ratio of the PWM pulse wave is 58% and the frequency is 10Khz according to the working condition state of the engine; at 2000 rpm, the PWM pulse wave outputs 60% of duty ratio and 13Khz frequency according to the working condition state of the engine; the PWM pulse wave at 2300 rpm outputs 63% of duty ratio, 15Khz frequency and the like according to the working condition state of the engine. It can be understood that, in practical application, the operating condition of the engine and the PWM pulse wave state have a corresponding relationship according to the operating condition state of the engine, and may be specifically set according to the requirements of the practical application scenario, which is not limited herein.
In specific implementation, when any one glow plug is detected to be abnormal, the abnormal glow plug is closed, and the operation of other glow plugs is switched to in real time.
In specific implementation, when the first glow plug or the second glow plug works, the operation data of the first glow plug or the second glow plug can be collected, the working state of the first glow plug can be judged by detecting the collected operation data of the first glow plug, and the working state of the second glow plug can be judged by detecting the collected operation data of the second glow plug. When the first glow plug or the second glow plug is detected to be abnormal, the abnormal glow plug is closed and other normal glow plugs are switched to operate in time, so that the engine can operate stably, reliably, effectively and safely in the operating process. For example, when the abnormality of the first glow plug is detected, the computer control system timely turns off the first glow plug and switches to the second glow plug to work in real time, and the working process can be completed by sending a control instruction. For another example, when the second glow plug is detected to be abnormal, the computer control system timely turns off the second glow plug and switches to the first glow plug to work, and the working process can be completed by sending a control command.
In the embodiment of the invention, when any one glow plug is detected to be abnormal, an alarm prompt is sent out. The alarm reminding can remind related workers to carry out corresponding treatment in time, and the use safety of the internal combustion engine is guaranteed.
It should be noted that, when the number of the glow plugs in the internal combustion engine is more than two, it only needs to meet the requirement that when the glow plugs are alternately switched, after at least two glow plugs simultaneously work for a certain period of time, the glow plug which is started first is closed, so as to ensure the stability of the engine working.
To facilitate a better understanding and realization of the embodiments of the invention by those skilled in the art. The embodiment of the invention also provides an internal combustion engine.
In a specific implementation, an internal combustion engine, comprising: n are set up in N glow plugs on the cylinder head of internal-combustion engine, N is greater than or equal to 2, with N glow plug all the coupled controller, wherein: the controller is adapted to control the N glow plugs to be alternately activated when the start of the internal combustion engine is detected, and at least two of the glow plugs are operated together for a preset time period when the N glow plugs are alternately activated.
In particular implementations, for example, the internal combustion engine may be provided with 2, 3, or other numbers of glow plugs.
Referring to fig. 2, a schematic diagram of a part of a structure of an internal combustion engine according to an embodiment of the present invention is provided, and the internal combustion engine may include: a first glow plug 21, a second glow plug 22, a controller (not shown in fig. 2).
In a specific implementation, the first glow plug 21 and the second glow plug 22 are provided on a cylinder head 23 of the internal combustion engine.
In the embodiment of the present invention, the first glow plug 21 and the second glow plug 22 may be symmetrically disposed on the cylinder head 23, or may be asymmetrically disposed on the cylinder head 23. When the first glow plug 21 and the second glow plug 22 are symmetrically arranged on the cylinder head 23, the mechanical properties are more balanced than those of an internal combustion engine provided with one glow plug, the propagation distance of flame can be effectively shortened, the knocking of the internal combustion engine is reduced, and the safety of the internal combustion engine is improved.
In a specific implementation, a controller is coupled to both the first glow plug 21 and the second glow plug 22, and is capable of controlling the first glow plug 21 and the second glow plug 22 to be alternately activated when the start of the internal combustion engine is detected, and the other one of the first glow plug 21 and the second glow plug 22 is turned off after the other one of the first glow plug 21 and the second glow plug 22 continues to operate for a first period of time after the start of the first glow plug 21 and the second glow plug 22.
In specific implementation, the controller is further adapted to control the first glow plug 21 and the second glow plug 22 to adjust the power of the activated glow plugs according to the real-time operating condition of the engine after the alternate activation.
In specific implementation, the controller is suitable for adjusting the power of the started glow plug by adjusting the frequency and the duty ratio of the PWM pulse wave; or, the power of the started glow plug is adjusted by adjusting the duty ratio of the PWM pulse wave.
In the present embodiment, the operating condition of the engine is positively correlated to the power of the first glow plug 21 or the second glow plug 22.
In specific implementation, the controller is further adapted to, when detecting that any one of the glow plugs is abnormal, turn off the abnormal glow plug and switch to the other glow plug to operate in real time.
For example, when the controller detects that the first glow plug 21 is abnormal, the controller turns off the first glow plug 21 and switches to the second glow plug to work in real time; or, when detecting that the second glow plug 21 is abnormal, closing the second glow plug 21 and switching to the first glow plug to work in real time.
In a specific implementation, the internal combustion engine may further comprise an alarm unit (not shown in fig. 2) adapted to issue an alarm prompt when an abnormality of any glow plug is detected.
For example, the alarm unit issues an alarm when detecting an abnormality in any one of the first glow plug 21 and the second glow plug 22.
In specific implementation, the working principle and the working process of the internal combustion engine may refer to descriptions in any of the internal combustion engine control methods provided in the above embodiments of the present invention, and are not described herein again.
The embodiment of the present invention further provides another internal combustion engine, which includes a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform the steps of any one of the above-mentioned internal combustion engine control methods provided by the embodiment of the present invention.
The embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon computer instructions, where the computer instructions, when executed, perform the steps of any one of the above-mentioned methods for controlling an internal combustion engine provided by the embodiment of the present invention.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in any computer readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (16)
1. A control method of an internal combustion engine is characterized in that the internal combustion engine comprises N glow plugs arranged on a cylinder cover of the internal combustion engine, wherein N is more than or equal to 2; the control method of the internal combustion engine includes:
and when the starting of the internal combustion engine is detected, controlling the N glow plugs to be started alternately, and when the N glow plugs are started alternately, at least two glow plugs work together for a preset time.
2. The control method of an internal combustion engine according to claim 1, characterized in that the internal combustion engine includes: the first glow plug and the second glow plug, control N glow plug starts in turn, and when N glow plug starts in turn, at least two glow plugs work jointly for the preset duration, include:
after any one of the first glow plug and the second glow plug is started, the other one of the first glow plug and the second glow plug continues to work for a first period of time and then is turned off.
3. The control method of an internal combustion engine according to claim 2, further comprising, after controlling the first glow plug to be alternately activated with the second glow plug:
and adjusting the power of the started glow plug according to the real-time working condition of the engine.
4. The control method of an internal combustion engine according to claim 3, wherein said adjusting the power of the activated glow plug includes any one of:
adjusting the power of the started glow plug by adjusting the frequency and the duty ratio of the PWM pulse wave;
and adjusting the power of the started glow plug by adjusting the duty ratio of the PWM pulse wave.
5. The control method of an internal combustion engine according to claim 4, characterized in that the operating condition of the engine is positively correlated with the power of the first glow plug or the second glow plug.
6. The control method of an internal combustion engine according to claim 1, wherein when an abnormality in any one of the glow plugs is detected, the abnormal glow plug is turned off and the operation of the other glow plug is switched in real time.
7. The control method of an internal combustion engine according to claim 6, when an abnormality of any one of the glow plugs is detected, further comprising: and sending out an alarm prompt.
8. An internal combustion engine, comprising: n are set up in N glow plugs on the cylinder head of internal-combustion engine, N is greater than or equal to 2, with N glow plug all the coupled controller, wherein: the controller is adapted to control the N glow plugs to be alternately activated when the start of the internal combustion engine is detected, and at least two of the glow plugs are operated together for a preset time period when the N glow plugs are alternately activated.
9. The internal combustion engine of claim 8, comprising: the controller is suitable for being closed after the other one of the first glow plug and the second glow plug continues to work for a first time after any one of the first glow plug and the second glow plug is started.
10. The internal combustion engine of claim 9, wherein the controller is further adapted to control the power of the activated glow plug to be adjusted in accordance with a real-time operating condition of the engine after the first glow plug and the second glow plug are alternately activated.
11. The internal combustion engine of claim 10, wherein the controller is adapted to adjust the power of the activated glow plug by adjusting the frequency and duty cycle of the PWM pulse; or, the power of the started glow plug is adjusted by adjusting the duty ratio of the PWM pulse wave.
12. The internal combustion engine of claim 11, wherein the operating condition of the engine is positively correlated to the power of the first glow plug or the second glow plug.
13. The engine of claim 8, wherein the controller is further adapted to shut down an abnormal glow plug and switch to the other glow plug in real time when an abnormality is detected in any of the glow plugs.
14. The internal combustion engine of claim 13, further comprising an alarm unit adapted to issue an alarm alert when an abnormality is detected in any one of the glow plugs.
15. An internal combustion engine comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, characterized in that said processor, when executing said computer instructions, executes the steps of the control method of an internal combustion engine according to any one of claims 1 to 7.
16. A computer readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having computer instructions stored thereon, characterized in that the computer instructions, when executed, perform the steps of the control method of an internal combustion engine according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116044634A (en) * | 2023-03-21 | 2023-05-02 | 吉林大学 | Homogeneous charge compression combustion system with multi-point heated pistons |
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| CN111946524B (en) | 2022-05-31 |
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