CN115962041A - Engine, control method thereof and vehicle - Google Patents
Engine, control method thereof and vehicle Download PDFInfo
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- CN115962041A CN115962041A CN202310064971.1A CN202310064971A CN115962041A CN 115962041 A CN115962041 A CN 115962041A CN 202310064971 A CN202310064971 A CN 202310064971A CN 115962041 A CN115962041 A CN 115962041A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 245
- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 230000001276 controlling effect Effects 0.000 claims description 50
- 230000001105 regulatory effect Effects 0.000 claims description 34
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 229910052739 hydrogen Inorganic materials 0.000 claims description 23
- 239000001257 hydrogen Substances 0.000 claims description 23
- 230000004044 response Effects 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052799 carbon Inorganic materials 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 239000004071 soot Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000002431 hydrogen Chemical group 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses an engine, a control method thereof and a vehicle. Wherein, the engine includes: a precombustor, comprising: the gas storage tank comprises a first gas storage tank and a second gas storage tank, wherein the first gas storage tank and the second gas storage tank store different gases; the electromagnetic on-off valve is connected with the first opening on the side surface of the precombustion chamber; the first end of the gas ejector is connected with the first gas storage tank through a first pipeline; the first end of the gas mixer is connected with the second end of the gas ejector, and the second end of the gas mixer is connected with the electromagnetic on-off valve; and the main combustion chamber is connected with the second opening on the side surface of the precombustion chamber. The invention solves the technical problems that carbon is easy to deposit in the precombustion chamber and more residual waste gas exists in the related technology.
Description
Technical Field
The invention relates to the field of vehicle control, in particular to an engine, a control method thereof and a vehicle.
Background
The inside injection of conventional precombustion chamber is petrol, but because the precombustion chamber inner space is narrow and small, the air current motion is weak, and petrol is spouted and is gone into the precombustion chamber and can't carry out abundant mixture, causes the soot emission increase of precombustion chamber easily, and carbon deposit phenomenon probably appears in the precombustion chamber inside simultaneously, blocks up precombustion chamber flame orifice, causes the ignition difficulty, simultaneously, because the precombustion chamber space is narrow and small, and mainly carries out the material exchange through aperture and main combustion chamber, and the inside residual waste gas of precombustion chamber is more.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides an engine and a control method thereof, and a vehicle, which are used for at least solving the technical problems that carbon is easily deposited in a precombustion chamber and more residual waste gas exists in the related technology.
According to an aspect of an embodiment of the present invention, there is provided an engine including: a precombustor, comprising: the first gas storage tank and the second gas storage tank are different in stored gas; the electromagnetic on-off valve is connected with the first opening on the side surface of the precombustion chamber; the first end of the gas ejector is connected with the first gas storage tank through a first pipeline; the first end of the gas mixer is connected with the second end of the gas ejector, the second end of the gas mixer is connected with the electromagnetic on-off valve, and the third end of the gas mixer is connected with the second gas storage tank through a second pipeline; and the main combustion chamber is connected with the second opening on the side surface of the precombustion chamber.
Optionally, the prechamber further comprises: the first end of the first air rail is connected with a first air storage tank through a first pressure regulating valve, the second end of the first air rail is connected with a gas injector through a first pipeline, and the third end of the first air rail extends into the precombustion chamber; and a first end of the second air rail is connected with a second air storage tank through a second pressure regulating valve, a second end of the second air rail is connected with the air mixer through a second pipeline, and a third end of the second air rail extends into the precombustion chamber.
Optionally, the prechamber further comprises: and the pre-combustion chamber spark plug is arranged at the top of the pre-combustion chamber.
Optionally, the engine further comprises: and the cylinder cover is circumferentially positioned with the precombustion chamber through the concave-convex structure.
Optionally, the main combustion chamber further comprises: and the main combustion chamber oil sprayer is directly connected with the main combustion chamber.
Optionally, the engine further comprises: and the controller is connected with the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve and is used for controlling the working states of the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve.
According to another aspect of an embodiment of the present invention, there is also provided an engine control method applied to the engine of any one of the above, including: controlling the electromagnetic on-off valve to be opened; after responding to the opening of the electromagnetic on-off valve for a first preset time, controlling the gas injector to be opened, and keeping the electromagnetic on-off valve in an opening state; controlling the gas injector to close after responding to the opening of the gas injector for a second preset time; controlling the electromagnetic on-off valve to close after responding to the gas injector closing for a third preset time; and controlling the engine to start.
Optionally, the controlling the opening of the hydrogen injector in response to the solenoid on-off valve being opened for a first preset time includes: controlling the second pressure regulating valve to open, and transporting the first gas stored in the second gas storage tank to the precombustion chamber through a third end of the second gas rail; the gas injector is controlled to open in response to the proportion of the first gas in the prechamber reaching a first preset value.
Optionally, the method further includes: after the gas injector is opened, the injection pulse width is controlled to be the preset injection pulse width.
Optionally, controlling the mixed gas prechamber engine start-up comprises: and controlling the ignition of a spark plug in the precombustion chamber.
According to another aspect of an embodiment of the present invention, there is also provided an engine control apparatus including: the first on-off valve control module is used for controlling the opening of the electromagnetic on-off valve; the first ejector control module is used for controlling the gas ejector to be opened after the electromagnetic on-off valve is opened for a first preset time, and the electromagnetic on-off valve keeps an opening state; the second injector control module is used for responding to the opening of the gas injector for a second preset time and then controlling the gas injector to be closed; the second on-off valve control module is used for controlling the electromagnetic on-off valve to be closed after responding to the gas ejector to be closed for a third preset time; and the engine control module is used for controlling the starting of the engine.
According to another aspect of the embodiments of the present invention, there is also provided a vehicle including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform any of the methods described above.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the apparatus in which the computer-readable storage medium is controlled when the program is executed performs the above-described engine control method.
According to another aspect of the embodiments of the present invention, there is also provided a processor for running a program, wherein the program is run to execute the engine control method.
In an embodiment of the present invention, an engine includes: a precombustor, comprising: a first gas reservoir and a second gas reservoir; the electromagnetic on-off valve is connected with the first opening on the side surface of the precombustion chamber; the first end of the gas ejector is connected with the first gas storage tank through a first pipeline; the first end of the gas mixer is connected with the second end of the gas ejector, and the second end of the gas mixer is connected with the electromagnetic on-off valve; and the main combustion chamber is connected with the second opening on the side surface of the precombustion chamber. It is easy to notice that, the gas of first gas holder and second gas holder storage is different, switch through control electromagnetism on-off valve and gas injector, can mix two kinds of different gases fully in gas mixer, replace spraying petrol inside the precombustion chamber with spraying the mixed gas inside the precombustion chamber, the purpose of reducing the precombustion chamber soot emission has been reached, utilize the gas in the second gas holder to push out the remaining waste gas in the precombustion chamber totally, the purpose of cleaing away the remaining waste gas of precombustion chamber has been reached, through above mode, the carbon deposit risk inside the precombustion chamber has been realized reducing, the technological effect of remaining waste gas is reduced, and then the easy carbon deposit of precombustion chamber in the correlation technique, and the more technical problem of remaining waste gas.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view showing the internal construction of an engine according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a pre-chamber hydrogen injection engine according to an embodiment of the present invention;
FIG. 3 is a flow chart of an engine control method according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of a pre-chamber hydrogen injection control strategy according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an engine control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, an engine embodiment is provided, it should be noted that the steps illustrated in the flowchart of the figure may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Fig. 1 is a schematic view of the internal configuration of an engine according to an embodiment of the present invention, and fig. 2 is a schematic view of a pre-chamber hydrogen injection engine according to an embodiment of the present invention, as shown in fig. 1, which includes the following parts: prechamber 10, electromagnetic shut-off valve 20, gas injector 30, gas mixer 40 and main combustion chamber (not shown in the figure).
As shown in fig. 2, the precombustor 10 includes: a first reservoir 101 and a second reservoir 102, the first and second reservoirs storing different gases.
Wherein, the prechamber can be used for realizing stably catching fire to light main combustion chamber, what store in the first gas holder can be hydrogen, what store in the second gas holder can be highly-compressed air, use the mist of two kinds of gases to replace petrol, can reduce the soot emission of engine, can use highly-compressed air to push out the inside residual waste gas of prechamber totally simultaneously, reduced the inside residual waste gas of prechamber, improve the work efficiency of engine.
It should be noted that there is no connection relationship between the first air tank and the second air tank.
It can be understood that, because the high-pressure air has compressibility and can expand rapidly under the atmospheric or vacuum state, the residual exhaust gas in the precombustion chamber can be pushed out completely by using the high-pressure air, the residual exhaust gas in the precombustion chamber is reduced, and the working efficiency of the engine is improved.
And an electromagnetic on-off valve 20 connected to the first opening in the side surface of the precombustion chamber.
The electromagnetic on-off valve is a stop valve which is automatically opened and closed by means of electromagnetic force, and can be used for controlling gas to enter or not enter the precombustion chamber. Compared with a common on-off valve, the electromagnetic on-off valve has shorter response time and is more beneficial to improving the working efficiency of an engine, the first opening can be a hole which is formed in the side surface of the precombustion chamber in advance, and gas can enter the precombustion chamber through the first opening.
And a gas ejector 30, a first end of which is connected with the first gas storage tank through a first pipeline.
The gas injector is a device for injecting gas and can be used for injecting hydrogen, the first end of the gas injector can be the upper end of the gas injector, the first pipeline can be any pipeline which can connect the gas injector with the first gas storage tank and can be used for transporting the gas stored in the first gas storage tank into the gas injector.
It should be noted that the gas injector is connected to the first reservoir only and not to the second reservoir, i.e., only the first reservoir delivers gas from the gas injector.
And the first end of the gas mixer is connected with the second end of the gas ejector, the second end of the gas mixer is connected with the electromagnetic on-off valve, and the third end of the gas mixer is connected with a second gas storage tank through a second pipeline.
The gas mixer is a device for mixing different gases, and can be used for fully mixing high-pressure air and hydrogen, the first end of the gas mixer can be the upper end of the gas mixer, the second end of the gas ejector can be the lower end of the gas ejector, the second end of the gas mixer can be the lower end of the gas mixer, the third end of the gas mixer can be one end extending out of the side face of the gas mixer, the second pipeline can be any pipeline capable of connecting the gas mixer and the second gas storage tank, and the gas mixer can be used for transporting gas stored in the second gas storage tank to the gas mixer.
It should be noted that, by connecting the gas injector, the gas mixer and the electromagnetic on-off valve together, the gas in the gas injector and the gas in the gas mixer can be fully mixed, and then the electromagnetic on-off valve controls whether the mixed gas enters the prechamber.
And the main combustion chamber is connected with the second opening on the side surface of the precombustion chamber.
The main combustion chamber is used for igniting working medium entering an engine cylinder to do work, the second opening can be a hole formed in the side face of the precombustion chamber in advance, and the precombustion chamber can ignite the working medium in the main combustion chamber through the second opening.
It should be noted that the working medium is a medium capable of converting heat energy and mechanical energy into each other, and in the embodiment of the present invention, it may be understood as a mixture of air and gasoline.
In an embodiment of the present invention, an engine includes: a precombustor, comprising: a first gas reservoir and a second gas reservoir; the electromagnetic on-off valve is connected with the first opening on the side surface of the precombustion chamber; the first end of the gas ejector is connected with the first gas storage tank through a first pipeline; the first end of the gas mixer is connected with the second end of the gas ejector, and the second end of the gas mixer is connected with the electromagnetic on-off valve; and the main combustion chamber is connected with the second opening on the side surface of the precombustion chamber. It is easy to notice that, the gas of first gas holder and second gas holder storage is different, switch through control electromagnetism on-off valve and gas injector, can mix two kinds of different gases fully in gas mixer, replace spraying petrol inside the precombustion chamber with spraying the mixed gas inside the precombustion chamber, the purpose of reducing the precombustion chamber soot emission has been reached, utilize the gas in the first gas holder to push out the remaining waste gas in the precombustion chamber totally, the purpose of cleaing away the remaining waste gas of precombustion chamber has been reached, through above mode, the carbon deposit risk inside the precombustion chamber has been realized reducing, the technological effect of remaining waste gas is reduced, and then the easy carbon deposit of precombustion chamber in the correlation technique, and the more technical problem of remaining waste gas.
Optionally, as shown in fig. 2, the prechamber 10 further comprises: a first air rail 103, a first end of which is connected with a first air storage tank through a first pressure regulating valve 104, a second end of which is connected with a gas injector through a first pipeline, and a third end of which extends into the precombustion chamber; and a second air rail 105, a first end of which is connected with a second air storage tank through a second pressure regulating valve 106, a second end of which is connected with the air mixer through a second pipeline, and a third end of which extends into the precombustion chamber.
The first gas rail may be a hydrogen gas rail for transporting hydrogen gas, the first end of the first gas rail may be the left end of the first gas rail, the first pressure regulating valve may be located between the first gas tank and the first gas rail and may be configured to regulate the gas pressure of the gas delivered from the first gas tank to an appropriate range and then deliver the gas to the first gas rail, the second end of the first gas rail may be the right end of the first gas rail and connect the first gas rail to the gas injector for transporting the hydrogen gas having an appropriate gas pressure, the third end of the first gas rail may be one or more ports extending from the side of the first gas rail, the second gas rail may be a high pressure air rail for transporting high pressure air, the first end of the second gas rail may be the left end of the second gas rail, the second pressure regulating valve may be located between the second gas tank and the second gas rail and may be configured to regulate the gas pressure of the gas delivered from the second gas tank to an appropriate range and then deliver the hydrogen gas to the gas injector to the second gas rail, and the second pressure regulating valve may be located between the second gas rail and connect the second gas rail to any of the second gas rail.
In an alternative embodiment, the first pressure regulating valve may regulate the pressure of the hydrogen gas to 5-20bar for delivery to the first gas rail, and the second pressure regulating valve may regulate the pressure of the high pressure air to 5-30bar for delivery to the second gas rail.
It is understood that the pressure of the high pressure air may be adjusted to be a little higher than that of the hydrogen gas when the pressure is adjusted because the high pressure air has compressibility and has a relatively high pressure with respect to other gases.
As shown in FIG. 2, the prechamber 10 may comprise: the first air storage tank 101, the second air storage tank 102, the first air rail 103, the first pressure regulating valve 104, the second air rail 105, the second pressure regulating valve 106, the engine aftertreatment system 107, the engine throttle 108 and the engine intake intercooler 109, wherein the engine aftertreatment system 107 can be used for treating exhaust gas of the engine, the engine throttle 108 is a controllable valve for controlling gas to enter the engine, the engine intake intercooler 109 can be used for reducing the intake temperature of the engine and reducing fuel consumption of the engine, and the specific implementation process is comprehensively explained, as shown in the figure, a first end of the first air rail 103 is connected with the first air storage tank 101 through the first pressure regulating valve 104, a second end of the first air rail 103 is connected with a gas injector through a first pipeline, and a third end of the first air rail 103 extends into a pre-combustion chamber; a first end of a second gas rail 105 is connected to the second gas tank 102 via a second pressure regulating valve 106, a second end of the second gas rail 105 is connected to a third end of the gas mixer via a second line, and the third end of the second gas rail 105 extends into the prechamber.
Optionally, as shown in fig. 1, the prechamber 10 further comprises: and a pre-chamber spark plug 110 installed at the top of the pre-chamber.
The ignition plug of the precombustion chamber can be used for providing ignition sparks at a proper time and igniting mixed gas in the precombustion chamber, and a plurality of flame beams generated in the precombustion chamber can simultaneously realize multi-point ignition in the main combustion chamber, so that the circulation fluctuation of the combustion process is reduced, the continuous combustion time is effectively shortened through the flame beams, and the working efficiency of the engine is improved.
Optionally, as shown in fig. 1, the engine further comprises: and a cylinder cover 60 circumferentially positioned with the prechamber by a concave-convex structure.
The cylinder cover is mounted on the cylinder body, and can be used for sealing the cylinder from the upper part and forming a combustion chamber.
Specifically, the concave-convex structure can be a convex structure formed in the circumferential direction of the structure of the precombustion chamber, and the position of a cylinder cover matched with the convex structure is processed into a concave structure.
It should be noted that the circumferential positioning may be positioning and fixing a part on the shaft in the circumferential direction, and circumferential positioning of the prechamber and the cylinder head may be performed, so that a heat dissipation requirement of the prechamber may be ensured.
Optionally, as shown in fig. 1, the main combustion chamber further includes: and the main combustion chamber fuel injector 50 is directly connected with the main combustion chamber.
The fuel injector of the main combustion chamber can be used for injecting fuel required by an engine into the main combustion chamber at a certain pressure, speed and direction, and combusting the fuel with mixed gas entering a cylinder to do work.
Optionally, the engine further comprises: and the controller is connected with the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve and is used for controlling the working states of the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve.
The controller can be used for controlling the on-off of the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve.
Example 2
According to another aspect of embodiments of the invention, there is also provided an engine control method, it being noted that the steps illustrated in the flowchart of the drawings may be carried out in a computer system such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be carried out in an order different than presented herein.
The method embodiments may be performed in a vehicle comprising a memory and a processor. A processor may include one or more processing units. For example: the processor may include a Central Processing Unit (CPU), a Graphic Processing Unit (GPU), a Digital Signal Processing (DSP) chip, a Microprocessor (MCU), a field-programmable gate array (FPGA), a neural Network Processor (NPU), a Tensor Processing Unit (TPU), an Artificial Intelligence (AI) type processor, and the like. Wherein the different processing units may be separate components or may be integrated in one or more processors.
The memory may be used to store a computer program, for example, a computer program corresponding to the engine control method in the embodiment of the present invention, and the processor may implement the above-described evaluation method of the powertrain in the vehicle by running the computer program stored in the memory. The memory may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include memory remotely located from the processor, which may be connected to the electronic device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Fig. 3 is a flowchart of an engine control method according to an embodiment of the present invention, as shown in fig. 3, including the steps of:
and S301, controlling the electromagnetic on-off valve to be opened.
In an alternative embodiment, the solenoid on/off valve may be controlled to open by a controller.
It should be noted that, because the electromagnetic on-off valve is connected with the gas mixer, and the gas mixer is connected with the second air rail for delivering high-pressure air, before the gas injector is opened, the electromagnetic on-off valve is controlled to be opened first, so that the high-pressure air can be delivered to the precombustion chamber first, and the residual waste gas left after the last engine operation can be removed.
And S302, in response to the opening of the electromagnetic on-off valve for the first preset time, controlling the gas injector to be opened, and keeping the electromagnetic on-off valve in an opening state.
Wherein the first preset time may be a time for which the electromagnetic on-off valve is opened in advance, which is preset in advance, and may be 30-50 ° CA in advance, for example.
It should be noted that, after the electromagnetic on-off valve is opened for the first preset time, the gas injector is controlled to open, so that it can be ensured that the residual waste gas in the precombustion chamber is completely removed at this time, and the electromagnetic on-off valve is still kept in an open state at this time, so that the high-pressure air and the hydrogen can be fully mixed in the gas mixer.
In an alternative embodiment, the gas injector may be controlled to open by a controller.
And step S303, controlling the gas injector to close after responding to the opening of the gas injector for the second preset time.
The second preset time may be a preset time for opening the gas injector and the electromagnetic on-off valve at the same time, the second preset time may be adjusted according to the engine load and the working medium condition inside the main combustion chamber, and the air-fuel ratio of the mixture inside the hydrogen mixer needs to be maintained within a suitable range, for example, 0.9 to 1.1, at this time, it may be considered that the high-pressure air and the hydrogen are sufficiently mixed, and the gas injector may be closed.
In an alternative embodiment, the gas injector may be controlled to close by a controller.
And step S304, controlling the electromagnetic on-off valve to close after responding to the gas injector closing for the third preset time.
The third preset time may be a preset time for delaying the closing of the electromagnetic on-off valve, and the length of the time may be the same as that of the first preset time.
After the gas injector is closed, the mixed gas of the high-pressure air and the hydrogen gas in the gas mixer can be pushed into the precombustion chamber while the electromagnetic on-off valve is kept open.
In an alternative embodiment, the closing of the solenoid on/off valve may be controlled by a controller.
In step S305, the engine is controlled to start.
In an alternative embodiment, engine starting may be controlled by controlling pre-chamber spark plug ignition.
FIG. 4 is a schematic diagram of a strategy for controlling hydrogen injection from the prechamber according to an embodiment of the present invention, wherein as shown in FIG. 4, the whole process of hydrogen injection from the prechamber can be divided into an intake stroke, a compression stroke, a power stroke and an exhaust stroke, and the strategy for controlling hydrogen injection from the prechamber according to an embodiment of the present invention is performed during the compression stroke, and specifically comprises the following steps: the method comprises the steps of firstly controlling an electromagnetic on-off valve to open, entering a high-pressure air injection moment, completely removing residual waste gas generated in the last operation of an engine in the moment, controlling a hydrogen injector to open after the electromagnetic on-off valve is opened for a period of time, entering a hydrogen injection moment, fully mixing high-pressure air and hydrogen in the period of time, ensuring the air-fuel ratio of mixed gas in a hydrogen mixer to be in a proper range, then closing the hydrogen injector, closing the electromagnetic on-off valve after a period of time, and finally controlling a spark plug of a pre-combustion chamber to ignite and enter the ignition moment of the pre-combustion chamber.
Through the steps, residual waste gas left by the engine in last operation can be removed by utilizing high-pressure air, and the carbon smoke in the engine is mainly generated by the main combustion chamber because the carbon smoke is not generated by the combustion of gas, so that the generation of the carbon smoke in the operation process of the engine can be reduced by injecting mixed gas in the pre-combustion chamber instead of injecting gasoline in the pre-combustion chamber, and the technical problems that carbon is easily deposited in the pre-combustion chamber and the residual waste gas is more in the related technology are solved.
Optionally, the controlling the opening of the hydrogen injector in response to the solenoid on-off valve being opened for a first preset time includes: controlling the second pressure regulating valve to open, and transporting the first gas stored in the second gas storage tank to the precombustion chamber through a third end of the second gas rail; and controlling the gas injector to open in response to the proportion of the first gas in the prechamber reaching a first preset value.
Wherein the first gas may be high-pressure air stored in the second gas tank, and the first preset value may be a proportion of the high-pressure air in the prechamber preset in advance, and may be set to 100%, for example.
It should be noted that, since the residual exhaust gas in the precombustion chamber needs to be purged with the high-pressure air before the hydrogen injector is opened, when the proportion of the high-pressure air in the precombustion chamber is 100%, it can be considered that the residual exhaust gas in the precombustion chamber has been completely purged at this time, and therefore, the first preset value can be set to 100%.
It can be understood that, after the proportion of first gas in the precombustion chamber reaches first default, the gas injector is controlled to open again, can guarantee before the mist gets into the precombustion chamber, the remaining waste gas in the precombustion chamber has been cleared away and has been accomplished, can prevent to lead to producing the influence to the use of vehicle because engine power is not enough, is favorable to promoting vehicle power, improves the stability of fuel system work to the power and the design parameter of recovery or promotion engine.
In an alternative embodiment, the second pressure regulating valve and the gas injector may be controlled to open by a controller.
Optionally, the method further includes: after the gas injector is opened, the injection pulse width is controlled to be the preset injection pulse width.
The injection pulse width may be an injection pulse width of the hydrogen gas, that is, a time period for the gas injector to inject the hydrogen gas, the preset injection pulse width may be a time period for which the gas injector and the electromagnetic on-off valve are simultaneously opened, that is, a second preset time period in step S303, the preset injection pulse width may be adjusted according to an engine load and a working medium condition inside the main combustion chamber, and an air-fuel ratio of a mixture inside the hydrogen mixer needs to be maintained within a suitable range, for example, 0.9 to 1.1 within the preset injection pulse width.
In an alternative embodiment, the injection pulsewidth may be controlled to a preset injection pulsewidth by an injection pulsewidth controller.
It can be understood that the pulse width of the injection is adjusted to a preset pulse width, so that the high-pressure air and the hydrogen gas can be fully mixed in the gas mixer, and the air-fuel ratio of the mixture in the hydrogen mixer can be kept in a proper range.
Optionally, controlling the mixed gas prechamber engine start-up comprises: and controlling the ignition of a spark plug in the precombustion chamber.
In an alternative embodiment, pre-chamber spark plug ignition may be controlled by a pre-chamber spark plug controller.
Example 3
According to another aspect of the embodiments of the present invention, an engine control device is further provided, where the engine control device may execute the engine control method in embodiment 2, and a specific implementation scheme and an application scenario in this embodiment are the same as those in embodiment 2, which are not described herein again.
Fig. 5 is a schematic diagram of an engine control apparatus according to an embodiment of the present invention, as shown in fig. 5, the apparatus including: the first on-off valve control module 501 is used for controlling the opening of the electromagnetic on-off valve; a first injector control module 502, configured to control the gas injector to open in response to the solenoid on-off valve being opened for a first preset time, and the solenoid on-off valve remaining in an open state; a second injector control module 503 to control the gas injector to close in response to the gas injector being open for a second predetermined time; a second on-off valve control module 504 for controlling the electromagnetic on-off valve to close in response to the gas injector closing for a third preset time; an engine control module 505 controls engine starting.
The first injector control module 502 includes: the gas transportation unit is used for controlling the second pressure regulating valve to be opened and transporting the first gas stored in the second gas storage tank to the precombustion chamber through a third end of the second gas rail; and the injector control unit is used for responding to the proportion of the first gas in the precombustion chamber reaching a first preset value and controlling the gas injector to be opened.
The above-mentioned device still includes: and the pulse width control module is used for controlling the injection pulse width to be a preset injection pulse width after the gas injector is opened.
The engine control module 505 includes: and the spark plug control unit is used for controlling the ignition of the spark plug in the precombustion chamber.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a vehicle including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform any of the methods described above.
Example 5
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the apparatus in which the computer-readable storage medium is controlled when the program is executed performs the above-described engine control method.
Example 6
According to another aspect of the embodiments of the present invention, there is also provided a processor for running a program, wherein the program is run to execute the engine control method.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or may not be executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An engine, comprising:
a prechamber comprising: the first gas storage tank and the second gas storage tank store different gases;
the electromagnetic on-off valve is connected with the first opening on the side surface of the precombustion chamber;
the first end of the gas ejector is connected with the first gas storage tank through a first pipeline;
the first end of the gas mixer is connected with the second end of the gas ejector, the second end of the gas mixer is connected with the electromagnetic on-off valve, and the third end of the gas mixer is connected with the second gas storage tank through a second pipeline;
and the main combustion chamber is connected with the second opening on the side surface of the precombustion chamber.
2. The engine of claim 1, wherein the prechamber further comprises:
a first end of the first air rail is connected with the first air storage tank through a first pressure regulating valve, a second end of the first air rail is connected with the gas injector through the first pipeline, and a third end of the first air rail extends into the precombustion chamber;
and a first end of the second gas rail is connected with the second gas storage tank through a second pressure regulating valve, a second end of the second gas rail is connected with the gas mixer through the second pipeline, and a third end of the second gas rail extends into the precombustion chamber.
3. The engine of claim 2, wherein the prechamber further comprises:
and the pre-combustion chamber spark plug is arranged at the top of the pre-combustion chamber.
4. The engine of claim 1, further comprising:
and the cylinder cover is circumferentially positioned with the precombustion chamber through a concave-convex structure.
5. The engine of claim 1, wherein the main combustion chamber further comprises:
and the main combustion chamber oil sprayer is directly connected with the main combustion chamber.
6. The engine of claim 1, further comprising:
and the controller is connected with the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve and is used for controlling the working states of the electromagnetic on-off valve, the gas ejector, the first pressure regulating valve and the second pressure regulating valve.
7. An engine control method, characterized in that the method is applied to the engine of any one of claims 1 to 6, the method comprising:
controlling the opening of the electromagnetic on-off valve;
after responding to the opening of the electromagnetic on-off valve for a first preset time, controlling the gas ejector to be opened, and keeping the electromagnetic on-off valve in an opening state;
controlling the gas injector to close in response to the gas injector opening for a second preset time;
controlling the electromagnetic on-off valve to close in response to the gas injector closing for a third preset time;
controlling the engine to start.
8. The engine control method according to claim 7, characterized in that controlling the hydrogen injector to open in response to the solenoid on-off valve being open for a first preset time includes:
controlling the second pressure regulating valve to be opened, and transporting the first gas stored in the second gas storage tank to the precombustion chamber through a third end of the second gas rail;
controlling the gas injector to open in response to the proportion of the first gas within the pre-combustion chamber reaching a first preset value.
9. The engine control method according to claim 7, characterized by further comprising:
controlling the injection pulse width to be a preset injection pulse width after the gas injector is opened.
10. A vehicle, comprising:
an engine as claimed in any one of claims 1 to 6;
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 7 to 9.
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| CN202310064971.1A CN115962041A (en) | 2023-01-16 | 2023-01-16 | Engine, control method thereof and vehicle |
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| CN202310064971.1A CN115962041A (en) | 2023-01-16 | 2023-01-16 | Engine, control method thereof and vehicle |
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| DE10356192A1 (en) * | 2003-12-02 | 2005-07-07 | Deutz Ag | Operating process for a combustion engine especially a gas engine feeds and ignites fuel air mixture and can additionally inject hydrogen fuel |
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| CN106014694A (en) * | 2016-05-06 | 2016-10-12 | 山东大学 | Air-assisted gas ejector and combustion system and method for large-cylinder-diameter gas engine pre-combustion chamber |
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