CN115013144A - Automobile engine and engine control method - Google Patents
Automobile engine and engine control method Download PDFInfo
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- CN115013144A CN115013144A CN202210512522.4A CN202210512522A CN115013144A CN 115013144 A CN115013144 A CN 115013144A CN 202210512522 A CN202210512522 A CN 202210512522A CN 115013144 A CN115013144 A CN 115013144A
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- combustion chamber
- spark plug
- main combustion
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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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/12—Engines characterised by precombustion chambers with positive ignition
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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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
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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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/02—Arrangements having two or more sparking plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P9/00—Electric spark ignition control, not otherwise provided for
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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
- Y02T10/12—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)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses an automobile engine and an engine control method, wherein the automobile engine comprises: cylinder, spark plug component, guide structure, sensor and controller. A main combustion chamber and a precombustion chamber are formed in the cylinder body at intervals; the spark plug assembly comprises a first spark plug arranged in the prechamber and a second spark plug arranged in the main combustion chamber; the guide structure comprises a flame guide member, and the flame guide member is used for guiding flame in the precombustion chamber into the main combustion chamber, so that the precombustion chamber is helped to ignite the main combustion chamber, and the stability of precombustion is improved. The sensor is used for sensing a combustion parameter in the cylinder body when the first spark plug is ignited; the controller is electrically connected with the sensor and the second spark plug respectively, and is used for receiving the combustion parameters and controlling the second spark plug to strike sparks when the combustion parameters are abnormal, so that stable combustion in the main combustion chamber is ensured.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an automobile engine and an engine control method.
Background
The requirement for automobile emission is higher and higher nowadays, and the emission pollution can be reduced by enabling the automobile engine to burn more fully. In order to improve the thermal efficiency of the engine, pre-combustion technology has been applied to some engines. The pre-combustion technology can be divided into active pre-combustion and passive pre-combustion, in which a spark plug is usually disposed in a pre-combustion chamber, and then the flame in the pre-combustion chamber ignites the fuel in the main combustion chamber. However, in some conditions, the spark plug in the passive pre-combustion chamber may have difficulty igniting, resulting in insufficient ignition of the fuel in the main combustion chamber, and unstable combustion.
Disclosure of Invention
The invention mainly aims to provide an automobile engine and an engine control method, and aims to solve the problem that ignition is difficult when a traditional automobile engine adopts passive pre-combustion.
To achieve the above object, the present invention provides an automobile engine, including:
the cylinder body is internally provided with a main combustion chamber and a precombustion chamber at intervals, and a connecting hole is formed between the precombustion chamber and the main combustion chamber so as to communicate the precombustion chamber with the main combustion chamber;
the spark plug assembly comprises a first spark plug arranged in the precombustion chamber and a second spark plug arranged in the main combustion chamber;
the guide structure comprises a flame guide piece arranged in the connecting hole, and the flame guide piece extends into the main combustion chamber from the connecting hole and is used for guiding flame in the precombustion chamber into the main combustion chamber;
a sensor for sensing a combustion parameter within said cylinder when said first spark plug is fired; and the number of the first and second groups,
and the controller is electrically connected with the sensor and the second spark plug respectively, and is used for receiving the combustion parameter and controlling the second spark plug to strike sparks when the combustion parameter is abnormal.
Optionally, the cylinder body is provided with an installation groove on the side wall of the main combustion chamber, the installation groove is used for installing the second spark plug, and the second spark plug has an ignition end extending from the installation groove to the main combustion chamber.
Optionally, the flame guide is disposed in a cylindrical shape, and the flame guide extends along a direction opposite to the main combustion chamber and the precombustion chamber.
Optionally, the flame guide has an extension portion extending into the main combustion chamber from the connecting hole, the extension portion has a plurality of side holes opened toward a radial direction of the flame guide, and the side holes are provided at intervals on a peripheral side of the extension portion.
Optionally, the guiding structure further comprises a gas guiding assembly disposed in the pre-combustion chamber, the gas guiding assembly being configured to guide the mixed combustion gas into the pre-combustion chamber to exhaust the exhaust gas in the pre-combustion chamber.
Optionally, the gas guiding assembly includes a gas guiding hole communicating the prechamber with the main combustion chamber and a switch piece disposed at the gas guiding hole, the gas guiding hole and the connecting hole are disposed at an interval, the switch piece is used for plugging the gas guiding hole and opening the gas guiding hole during a suction stroke, so that the mixed combustion gas enters the prechamber.
Optionally, the switch includes a plugging portion movably disposed in the prechamber along a direction close to and away from the air vent, and a driving member for driving the plugging portion to move, the plugging portion includes a rod-shaped main body and a plug cover disposed at one end of the rod-shaped main body close to the air vent, and the driving member is drivingly connected to the other end of the rod-shaped main body.
Optionally, the sensors include, but are not limited to, oxygen sensors, temperature sensors, and knock sensors.
The present invention also proposes an engine control method for controlling the automobile engine as described above, the engine control method comprising:
controlling the first spark plug to ignite during the power stroke;
acquiring combustion parameters in a cylinder body;
and controlling the second spark plug to work according to the combustion parameter.
Optionally, the guide structure further includes a gas guide assembly disposed in the precombustion chamber, the gas guide assembly includes a gas guide hole communicating the precombustion chamber with the main combustion chamber, a blocking portion movably disposed in the precombustion chamber in a direction close to and away from the gas guide hole, and a driving member for driving the blocking portion to move, and the driving member is electrically connected to the control device;
the engine control method further includes:
during the suction stroke, controlling the driving piece to drive the plugging part to be far away from the air guide hole;
and controlling the driving piece to drive the plugging part to move towards the air guide hole so as to plug the air guide hole during a compression stroke, a power stroke and an exhaust stroke.
In the technical solution of the present invention, the cylinder of the automobile engine is provided with the main combustion chamber and the precombustion chamber, and the first spark plug and the second spark plug are respectively provided in the precombustion chamber and the main combustion chamber. In a normal state, the first spark plug will make a big fire, and the flame guide will guide the flame in the prechamber to the main combustion chamber, thereby helping the prechamber to ignite the main combustion chamber and improving the stability of the prechamber. When the pre-burning has a problem, the sensor can sense the combustion parameters in the cylinder body and transmit the combustion parameters to the controller, and the controller judges whether the combustion parameters are in a normal range or not so as to judge that the pre-burning is abnormal. The controller can control the second spark plug in the main combustion chamber to directly strike sparks, so that stable combustion in the main combustion chamber is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an automotive engine provided in accordance with the present invention;
FIG. 2 is a schematic view of the flame guide of FIG. 1;
FIG. 3 is a flowchart illustrating an engine control method according to an embodiment of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The requirement for automobile emission is higher and higher nowadays, and the emission pollution can be reduced by enabling the automobile engine to burn more fully. In order to improve the thermal efficiency of the engine, pre-combustion technology has been applied to some engines. The pre-combustion technology can be divided into active pre-combustion and passive pre-combustion, in which a spark plug is usually disposed in a pre-combustion chamber, and then the flame in the pre-combustion chamber ignites the fuel in the main combustion chamber. However, in some conditions, the spark plug in the passive pre-combustion chamber may have difficulty igniting, resulting in insufficient ignition of the fuel in the main combustion chamber, and unstable combustion.
In view of this, the invention provides an automobile engine, which aims to solve the problem that ignition is difficult when a traditional automobile engine adopts passive pre-combustion. Fig. 1 to 2 show an embodiment of an automobile engine according to the present invention.
Referring to fig. 1, the present invention provides an automobile engine 100, including: cylinder 1, spark plug assembly 2, guide structure 3, sensor and controller. A main combustion chamber 11 and a precombustion chamber 12 are formed in the cylinder 1 at intervals, and a connecting hole 13 is formed between the precombustion chamber 12 and the main combustion chamber 11 to communicate the precombustion chamber 12 with the main combustion chamber 11; the spark plug assembly 2 comprises a first spark plug 21 arranged in the prechamber 12 and a second spark plug 22 arranged in the main combustion chamber 11; the guiding structure 3 includes a flame guiding member 31 disposed in the connecting hole 13, the flame guiding member 31 extends into the main combustion chamber 11 from the connecting hole 13 for guiding the flame in the prechamber 12 into the main combustion chamber 11; the sensor is used for sensing the combustion parameter in the cylinder 1 when the first spark plug 21 is ignited; the controller is electrically connected with the sensor and the second spark plug 22 respectively, and is used for receiving the combustion parameter and controlling the second spark plug 22 to strike sparks when the combustion parameter is abnormal.
In the present invention, the main combustion chamber 11 and the precombustion chamber 12 are provided in the cylinder 1 of the automobile engine 100, and the first spark plug 21 and the second spark plug 22 are provided in the precombustion chamber 12 and the main combustion chamber 11, respectively. In a normal state, the first spark plug 21 will make a big fire, and the flame guide 31 will guide the flame in the prechamber 12 to the main combustion chamber 11, so as to help the prechamber 12 to ignite the main combustion chamber 11, thereby improving the stability of the prechamber. When the pre-burning is in a problem, the sensor senses the combustion parameter in the cylinder body 1 and transmits the combustion parameter to the controller, and the controller judges whether the combustion parameter is in a normal range or not, so that the abnormal pre-burning is judged. The controller will control the second spark plug 22 in the main combustion chamber 11 to directly strike the fire, so as to ensure stable combustion in the main combustion chamber 11.
Further, the cylinder block 1 is provided with an installation groove 14 on the side wall of the main combustion chamber 11, the installation groove 14 is used for installing the second spark plug 22, and the second spark plug 22 has a firing end 221 extending from the installation groove 14 to the main combustion chamber 11.
In the present embodiment, the automobile engine 100 is provided with the second ignition plug 22 in the main combustion chamber 11 in addition to the first ignition plug 21 provided in the precombustion chamber 12, and the mounting groove 14 is provided corresponding to the second ignition plug 22. In actual installation, the second spark plug 22 is generally disposed at a position distant from the first spark plug 21, thereby igniting a region where ignition by the first spark plug 21 is difficult. In addition, the second ignition plug 22 has a firing end 221 protruding from the mounting groove 14 to the main combustion chamber 11, thereby ensuring that the second ignition plug 22 can stably ignite the fuel in the main combustion chamber 11.
Further, referring to fig. 1 and 2, the flame guide 31 is disposed in a cylindrical shape, and the flame guide 31 extends along a direction opposite to the main combustion chamber 11 and the prechamber 12.
The function of the flame guide 31 is to guide the flame in the prechamber 12 into the main combustion chamber 11, so as to ensure the stability of the ignition of the first spark plug 21. In the present embodiment, the flame guide 31 is provided as a cylindrical structure extending toward the main combustion chamber 11, so that when the fuel in the prechamber 12 expands due to combustion, the flame can rush from the flame guide 31 into the main combustion chamber 11. The cylindrical structure of the flame guide 31 can collect the flame within a certain range, and ensure that the flame does not disperse before spreading to a proper position, thereby further improving the stability of ignition of the first spark plug 21.
Further, the flame guide 31 has an extension portion 311 extending from the connection hole 13 into the main combustion chamber 11, the extension portion 311 is opened with a plurality of side holes 312 in a radial direction of the flame guide 31, and the plurality of side holes 312 are provided at intervals on a peripheral side of the extension portion 311.
A flame may propagate within the flame guide 31 and extend from the flame guide 31 into the main combustion chamber 11, thereby igniting the fuel within the main combustion chamber 11. In the embodiment, the extending portion 311 of the flame guide 31 has a plurality of side holes 312 along its radial direction, and when the flame extends from the flame guide 31 to the main combustion chamber 11, a part of the flame may spread out from the plurality of side holes 312. This makes the flame in the main combustion chamber 11 more dispersed, thereby sufficiently igniting the main combustion chamber 11, further improving the stability of ignition of the first ignition plug 21.
Further, referring to fig. 1, in a specific application, each time the automobile engine 100 works, the exhaust gas generated by the previous combustion needs to be discharged out of the cylinder 1, and then an intake stroke is performed to refill the main combustion chamber 11 and the precombustion chamber 12 with fuel. However, the connecting hole 13 between the main combustion chamber 11 and the prechamber 12 is generally small, which makes it difficult to exhaust the exhaust gas in the prechamber 12 when exhausting, and the remaining exhaust gas can also affect the subsequent fuel intake. Therefore, in the present embodiment, the guiding structure 3 further includes a gas guiding assembly 32 disposed in the pre-chamber 12, and the gas guiding assembly 32 is used for guiding the mixed combustion gas into the pre-chamber 12 to exhaust the exhaust gas in the pre-chamber 12.
In the present embodiment, the gas guiding assembly 32 makes it easier for the mixed combustion gas to enter the pre-combustion chamber 12, so as to exhaust the exhaust gas in the pre-combustion chamber 12, thereby ensuring stable combustion in the pre-combustion chamber 12, and performing stable pre-combustion.
Specifically, the gas guiding assembly 32 includes a gas hole 321 for communicating the prechamber 12 with the main combustion chamber 11, and an opening/closing member 322 disposed at the gas hole 321, the gas hole 321 and the connecting hole 13 are spaced apart, and the opening/closing member 322 is used for sealing the gas hole 321 and opening the gas hole 321 during a suction stroke, so that the mixed combustion gas enters the prechamber 12.
In this embodiment, the gas guiding assembly 32 is actually operated by additionally opening one more gas guiding hole 321 on the prechamber 12 and cooperating with the switch 322. During the intake stroke, the mixed combustion gas will enter the prechamber 12 through the air holes 321, and thus will naturally discharge the residual exhaust gas from the prechamber 12, so as to ensure the stable combustion in the prechamber 12, and thus perform the stable prechamber. The air guide hole 321 should be close to the air inlet channel when being specifically arranged, so that the mixed combustion air can enter more conveniently. When the pre-combustion chamber 12 is burning, the air hole 321 is blocked by the switch 322, so that the flame can only spread from the guiding structure 3 to the main combustion chamber 11, thus ensuring the normal pre-combustion effect.
Specifically, the switch 322 includes a blocking portion 3221 movably disposed in the prechamber 12 in a direction approaching to and moving away from the air hole 321, and a driving member 3222 for driving the blocking portion 3221 to move, the blocking portion 3221 includes a rod-shaped main body 3221a and a plug cover 3221b disposed at one end of the rod-shaped main body 3221a approaching to the air hole 321, and the driving member 3222 is drivingly connected to the other end of the rod-shaped main body 3221 a.
In this embodiment, the driving member 3222 is actually controlled by the controller, and the controller may control the driving member 3222 to drive the rod-shaped main body 3221a away from the air guide hole 321 during the air suction stroke, so that the plug cover 3221b cancels the blocking of the air guide hole 321, and the mixed combustion gas smoothly enters the pre-combustion chamber 12; the controller can also control the driving element 3222 to drive the rod-shaped main body 3221a to move towards the air-guiding hole 321 in other strokes, so that the plug cover 3221b blocks the air-guiding hole 321. In fact, the switch 322 can be disposed in many ways, such as a flip-type switch, a telescopic plug, etc., and is not limited to the form of the plug 3221b and the driving member 3222. In contrast, the rod-shaped body 3221a can be connected to the plug 3221b at one end, and connected to the driving member 3222 at the other end after extending to a longer distance, so that the installation is more convenient.
Specifically, the sensors include, but are not limited to, oxygen sensors, temperature sensors, and knock sensors. In the present invention, the specific configuration of the sensor is not limited. In practical applications, the sensor may be set according to the combustion parameter, for example, when the combustion parameter is oxygen concentration, temperature and vibration intensity, the sensor may be set as an oxygen sensor, a temperature sensor and a knock sensor, or may be adjusted.
Based on the above hardware facilities, the present invention further provides an engine control method for controlling the automobile engine 100 according to any of the above embodiments, referring to fig. 3, where fig. 3 is a flowchart illustrating an embodiment of the engine control method, and the engine control method includes:
s10: in the power stroke, the first spark plug 21 is controlled to ignite.
S20: combustion parameters in the cylinder 1 are acquired.
S30: the operation of the second spark plug 22 is controlled according to the combustion parameter.
In the present embodiment, the automotive engine 100 needs pre-ignition in the power stroke, and therefore the controller controls the first ignition plug 21 to ignite. After ignition is finished, situations of insufficient combustion or difficult ignition need to be prevented, so that the controller can acquire the combustion parameters and judge whether the numerical values of the combustion parameters are within a preset range value. When the combustion parameter is obviously abnormal, the controller controls the second spark plug 22 to carry out auxiliary ignition, and when the combustion parameter is normal, the controller does not control the second spark plug 22 to ignite. The preset range value is preset in a preset database of the controller, but the preset range value is not limited here and can be adjusted according to actual use conditions.
Further, the guiding structure 3 further includes a gas guiding assembly 32 disposed in the prechamber 12, the gas guiding assembly 32 includes a gas guiding hole 321 for communicating the prechamber 12 and the main combustion chamber 11, a blocking portion 3221 movably disposed in the prechamber 12 along a direction approaching to and departing from the gas guiding hole 321, and a driving member 3222 for driving the blocking portion 3221 to move, and the driving member 3222 is electrically connected to the control device.
The engine control method further includes:
s40: during the suction stroke, the control driving member 3222 drives the blocking portion 3221 away from the air guide hole 321.
S50: during the compression stroke, the power stroke and the exhaust stroke, the driving element 3222 is controlled to drive the blocking portion 3221 to move towards the air guide hole 321 so as to block the air guide hole 321.
In this embodiment, the driving element 3222 is actually controlled by the controller, and the controller may control the driving element 3222 to drive the blocking portion 3221 to move away from the air guide hole 321 during the intake stroke, so that the blocking portion 3221 cancels the blocking of the air guide hole 321, and the mixed combustion gas smoothly enters the pre-combustion chamber 12; the controller can also control the driving member 3222 to drive the blocking portion 3221 to move towards the air guiding hole 321 during other strokes, so that the blocking portion 3221 blocks the air guiding hole 321, thereby ensuring the pre-combustion capability of the pre-combustion chamber 12 while enhancing the air intake capability of the pre-combustion chamber 12.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An automotive engine, comprising:
the cylinder body is internally provided with a main combustion chamber and a precombustion chamber at intervals, and a connecting hole is formed between the precombustion chamber and the main combustion chamber so as to communicate the precombustion chamber with the main combustion chamber;
the spark plug assembly comprises a first spark plug arranged in the precombustion chamber and a second spark plug arranged in the main combustion chamber;
the guide structure comprises a flame guide piece arranged in the connecting hole, and the flame guide piece extends into the main combustion chamber from the connecting hole and is used for guiding flame in the precombustion chamber into the main combustion chamber;
a sensor for sensing a combustion parameter within said cylinder when said first spark plug is fired; and the number of the first and second groups,
and the controller is electrically connected with the sensor and the second spark plug respectively, and is used for receiving the combustion parameters and controlling the second spark plug to strike sparks when the combustion parameters are abnormal.
2. The automotive engine of claim 1, wherein the block is provided with a mounting groove in a side wall of the primary combustion chamber, the mounting groove being adapted for mounting the second spark plug, and the second spark plug having a firing end extending from the mounting groove into the primary combustion chamber.
3. The automotive engine of claim 1, wherein the flame guide is cylindrical and extends in a direction opposite the main combustion chamber and the prechamber.
4. The automobile engine according to claim 3, wherein the flame guide has a protruding portion protruding from the connection hole into the main combustion chamber, and the protruding portion has a plurality of side holes opened in a radial direction of the flame guide, the plurality of side holes being provided at intervals on a peripheral side of the protruding portion.
5. The automotive engine of claim 1, wherein the directing structure further comprises a gas directing assembly disposed within the pre-combustion chamber for directing mixed combustion gases into the pre-combustion chamber for exhausting exhaust gases within the pre-combustion chamber.
6. The automobile engine as claimed in claim 5, wherein the gas guide assembly includes a gas guide hole communicating the pre-combustion chamber with the main combustion chamber, and a switching member provided at the gas guide hole, the gas guide hole being spaced apart from the connection hole, the switching member being configured to close the gas guide hole and open the gas guide hole during a suction stroke, so that the mixed combustion gas enters the pre-combustion chamber.
7. The automobile engine as set forth in claim 6, wherein the switch member includes a blocking portion movably disposed in the pre-combustion chamber in a direction approaching and separating from the air-vent, and a driving member for driving the blocking portion to move, the blocking portion includes a rod-shaped main body and a plug cap disposed at an end of the rod-shaped main body near the air-vent, and the driving member is drivingly connected to the other end of the rod-shaped main body.
8. The automotive engine of claim 1, wherein the sensors include, but are not limited to, oxygen sensors, temperature sensors, and knock sensors.
9. An engine control method for controlling an automobile engine according to any one of claims 1 to 8, characterized by comprising:
controlling a first spark plug to ignite during the power stroke;
acquiring combustion parameters in a cylinder body;
and controlling the second spark plug to work according to the combustion parameter.
10. The engine control method according to claim 9, wherein the guiding structure further comprises a gas guiding assembly disposed in the prechamber, the gas guiding assembly comprises a gas hole communicating the prechamber and the main combustion chamber, a blocking portion movably disposed in the prechamber in a direction approaching and departing from the gas hole, and a driving member for driving the blocking portion to move, and the driving member is electrically connected to the control device;
the engine control method further includes:
during the suction stroke, controlling the driving piece to drive the plugging part to be far away from the air guide hole;
and controlling the driving piece to drive the plugging part to move towards the air guide hole so as to plug the air guide hole during a compression stroke, a power stroke and an exhaust stroke.
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| CN202210512522.4A CN115013144B (en) | 2022-05-12 | 2022-05-12 | Automobile engine and engine control method |
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| CN202210512522.4A CN115013144B (en) | 2022-05-12 | 2022-05-12 | Automobile engine and engine control method |
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| CN115013144B CN115013144B (en) | 2023-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355081A (en) * | 2022-10-14 | 2022-11-18 | 潍柴动力股份有限公司 | Precombustion chamber and cylinder cover |
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