CN215595771U - Spark plug and engine - Google Patents
Spark plug and engine Download PDFInfo
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- CN215595771U CN215595771U CN202121854350.6U CN202121854350U CN215595771U CN 215595771 U CN215595771 U CN 215595771U CN 202121854350 U CN202121854350 U CN 202121854350U CN 215595771 U CN215595771 U CN 215595771U
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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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Abstract
The application provides a spark plug and an engine, and the spark plug comprises a spark plug body and a pre-combustion chamber body, wherein one end of the spark plug body is provided with a first electrode and a second electrode, and an electrode gap is formed between the first electrode and the second electrode. The precombustion chamber body is provided with a cavity, the precombustion chamber body is sleeved on one end of the spark plug body, the first electrode, the second electrode and the electrode gap are all positioned in the cavity, and the precombustion chamber body is connected with the spark plug body in a detachable mode. Effectively avoided the electrode gap to be blocked in the precombustion chamber internally to can realize the detection and the maintenance to the electrode gap on the spark plug body, be convenient for carry out experiment and daily maintenance etc. to the electrode gap in the spark plug, promote the utilization ratio of spark plug, and reduced the use cost of spark plug. The spark plug solves the problems that in the existing spark plug, the electrode gap is blocked in the precombustion chamber body, and the electrode gap cannot be repaired, so that the utilization rate of the spark plug is low and the use cost is high.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to a spark plug and an engine.
Background
Spark plugs are one of the important elements of an engine ignition system and include a center electrode and side electrodes with an electrode gap therebetween. Under the action of high voltage, the current between the central electrode and the side electrodes can pass through the electrode gap to generate spark, so that the combustible raw materials in the cylinder are ignited to start the engine.
At present, a spark plug such as a pre-chamber spark plug includes a spark plug body and a pre-chamber body, the pre-chamber body is disposed on one end of the spark plug body, the spark plug body and the pre-chamber body are fixedly connected into a whole by a hot pressing method, and a central electrode, a side electrode and an electrode gap therebetween of the spark plug body are located in a cavity of the pre-chamber body. During ignition, the combustible raw materials can be ignited in the precombustion chamber, and flame is sprayed out from the spray holes of the precombustion chamber so as to ignite the combustible raw materials in the cylinder body of the engine. The size of the gap between the central electrode and the side electrode has a great influence on the normal engine, and in the process of engine maintenance or repair, the electrode gap of the spark plug of the pre-combustion chamber is usually required to be checked so as to be timely adjusted to ensure the normal operation of the engine.
However, since the spark plug body and the pre-combustion chamber body are fixed and integrated by a hot pressing method, the electrode gap in the pre-combustion chamber body cannot be checked and adjusted, so that the test, the routine maintenance and the repair of the spark plug are inconvenient, and only the waste replacement can be performed after a fault occurs or the service time reaches a certain time limit, thereby causing a low utilization rate and a high use cost of the spark plug.
SUMMERY OF THE UTILITY MODEL
The utility model provides a spark plug and an engine, and aims to solve the problems that an electrode gap is blocked in a precombustion chamber body in the conventional spark plug, so that the electrode gap cannot be repaired, the utilization rate of the spark plug is low, and the use cost is high.
The present application provides, in a first aspect, a spark plug comprising: a spark plug body and a pre-chamber body;
the spark plug body is provided with a first electrode and a second electrode at one end, and an electrode gap is formed between the first electrode and the second electrode;
the precombustion chamber body has the cavity, a pot head of the precombustion chamber body is established one of the spark plug body is served, just first electrode the second electrode with the electrode gap all is located in the cavity, the precombustion chamber body with the spark plug body passes through the detachable mode and connects.
The precombustion chamber body is connected with the spark plug body in a detachable mode, so that the condition that the electrode gap is blocked in the precombustion chamber body is avoided, when the spark plug needs to be maintained, the precombustion chamber body only needs to be detached from the spark plug body, and the precombustion chamber body can be installed on the spark plug body again after the detection or the maintenance of the electrode gap is completed. The electrode gap in the spark plug is convenient to test, daily maintenance and the like, the detection rate and the maintenance rate of the spark plug can be effectively improved, the rejection rate of the spark plug is reduced, the service life of the spark plug is prolonged, the utilization rate of the spark plug is effectively improved, and the use cost is reduced.
In a possible implementation manner, the spark plug body is provided with a first external thread on the outer wall of one end, the pre-combustion chamber body is provided with a first internal thread on the inner wall of one end, the first internal thread is matched with the first external thread, and the pre-combustion chamber body and the spark plug body are detachably connected through the matching of the first external thread and the first internal thread.
In one possible implementation, one end of the spark plug body has a housing, and the housing is provided with the first external thread on an outer wall of one end adjacent to the pre-combustion chamber body.
In a possible implementation manner, the shell comprises a first section, a second section and a third section which are connected in sequence, the first external thread is arranged on the first section, and the second section is positioned between the first section and the third section;
the second section is provided with a first abutting part, one end face of the first abutting part, which deviates from the third section, forms a first abutting surface, one end of the precombustion chamber body is sleeved on the first section, and the end part of one end of the precombustion chamber body abuts against the first abutting surface.
In a possible implementation, the pre-combustion chamber further comprises a first sealing member, and the first sealing member is arranged between an end part of one end of the pre-combustion chamber body and the first abutting surface.
In one possible implementation manner, the third section is provided with a first operating part, and the first operating part comprises a plurality of outer wall surfaces arranged at angles.
In a possible realization, the external wall of the prechamber body is provided with a second external thread.
In one possible implementation manner, one end of the precombustion chamber body is provided with a second abutting part, and the end surface of one end of the second abutting part adjacent to the other end of the precombustion chamber body forms a second abutting surface;
the sealing device further comprises a second sealing element, and the second sealing element is arranged on the second abutting surface.
In a possible implementation manner, one end of the prechamber body is further provided with a second operating part, the second operating part is located on one side of the second abutting part, which is far away from the other end of the prechamber body, and the second operating part comprises a plurality of outer wall surfaces which are arranged at an angle.
A second aspect of the present application provides an engine comprising a cylinder block and a spark plug as claimed in any one of the above, the spark plug being provided on the cylinder block.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a spark plug according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a spark plug according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a spark plug body according to an embodiment of the present disclosure;
FIG. 4 is a cross-sectional view of a spark plug body according to an embodiment of the present application;
FIG. 5 is a schematic structural view of a prechamber body according to embodiments of the present disclosure;
FIG. 6 is a cross-sectional view of a prechamber body according to embodiments of the present disclosure.
Description of reference numerals:
100-a spark plug;
10-a spark plug body;
11-a first electrode;
12-a second electrode;
13-a housing;
131-a first section;
132-a second segment;
1321 — a first abutment;
133-third section;
1331-a first operating part;
14-an insulator;
15-a first seal;
16-electrode gap;
20-a prechamber body;
21-a chamber;
22-a second abutment;
23-a second seal;
24-a second operating portion;
and (25) spraying holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
The engine is a power device capable of converting other energy into mechanical energy, and has very wide application in industry and very important position and function. Such as various motor equipment of airplanes, trains, motor cars, motor vehicles and the like, has a very important role in providing power for the motor equipment by burning power fuel in the motor equipment.
Typically, engines require ignition prior to starting, such as natural gas engines, which require a spark to ignite natural gas in the engine block to burn the natural gas to generate power. In the ignition system of an engine, a spark plug plays a very important role in introducing a high voltage into a cylinder and causing it to generate an electric spark between electrode gaps of the spark plug, thereby igniting natural gas in the cylinder.
Such as a pre-chamber spark plug comprising a spark plug body and a pre-chamber body, wherein the pre-chamber body is disposed at one end of the spark plug body and an electrode gap of the spark plug body is located in the pre-chamber body. When the gas burner is ignited, natural gas in the pre-combustion chamber body is ignited by electric sparks generated between the electrode gaps, flame can be sprayed out of the spray holes in the pre-combustion chamber body, and therefore the natural gas in the cylinder body is ignited.
The electrode gap is an important factor for ensuring the normal ignition of the pre-combustion chamber spark plug, generally, the electrode gap of the pre-combustion chamber spark plug needs to be checked in the process of engine maintenance or repair, and the normal starting of the engine is affected by the excessively large or small electrode gap. Therefore, the inspection of the spark plug electrode gap is of great importance in the maintenance of the locomotive or engine.
In the conventional pre-chamber spark plug, the spark plug body and the pre-chamber body are integrally formed by hot pressing, and the electrode gap is located in the pre-chamber body, so that the inspection work of the electrode gap is difficult. Therefore, in general, once a problem occurs in the ignition system of the engine, the spark plug of the pre-combustion chamber can only be removed and replaced as a whole. Or, after the service time of the spark plug of the pre-combustion chamber reaches a certain time, the spark plug is directly discarded and replaced, namely, the spark plug of the pre-combustion chamber cannot be maintained and reused in the service cycle, so that the utilization rate of the spark plug is low, resource waste is caused, and the use cost is improved.
Based on above-mentioned problem, the spark plug and engine that this application provided make the precombustion chamber body can dismantle with the spark plug and be connected, are convenient for detect and maintain the internal electrode gap of precombustion chamber, are convenient for carry out experiment and daily maintenance etc. to the electrode gap of spark plug. Therefore, convenience is provided for the maintenance of the engine, the utilization rate of the spark plug is improved, and the use cost is reduced.
Fig. 1 is a schematic structural view of a spark plug according to an embodiment of the present invention, and fig. 2 is a sectional view of the spark plug according to the embodiment of the present invention.
Referring to fig. 1, the present embodiment provides a spark plug 100, which may be used in an engine, and includes a spark plug body 10 and a prechamber body 20, and as shown in fig. 2, a first electrode 11 and a second electrode 12 are disposed on one end of the spark plug body 10, where the first electrode 11 may be a center electrode and the second electrode 12 may be a side electrode. An electrode gap 16 is formed between the first electrode 11 and the second electrode 12, and when the first electrode 11 and the second electrode 12 are energized, an electric spark is generated between the electrode gap 16.
Specifically, referring to fig. 2, the spark plug body 10 may further include an insulating member 14 and a housing 13, the insulating member 14 is disposed on an outer periphery of the first electrode 11, an end of the first electrode 11 extends out of an end of the insulating member 14, the housing 13 is disposed on an outer periphery of an end of the insulating member 14, the second electrode 12 is disposed on the housing 13, and an electrode gap 16 is formed between the first electrode 11 and the second electrode 12.
The prechamber body 20 is sleeved on one end of the spark plug body 10, the prechamber body 20 has a cavity 21, and the cavity 21 of the prechamber body 20 can be sleeved on the end of the spark plug body 10 where the electrode is arranged, so that the first electrode 11 and the second electrode 12 are located in the cavity 21, and the electrode gap 16 is located in the cavity 21 of the prechamber body 20.
Meanwhile, the prechamber body 20 may further be provided with a nozzle hole 25, wherein the nozzle hole 25 is communicated with the cavity 21, and the nozzle hole 25 is located on a side of the prechamber body 20 away from the spark plug body 10, and when the spark plug 100 is installed on an engine, the nozzle hole 25 on the prechamber body 20 is located in a cylinder of the engine. Thus, when the electrode gap 16 generates spark in the chamber 21, the natural gas in the chamber 21 can be ignited, and the flame in the chamber 21 can be sprayed out from the spray hole 25 and sprayed to the cylinder of the engine, so that the natural gas in the cylinder of the engine can be ignited, and the engine can be started.
The prechamber body 20 and the spark plug body 10 are detachably connected to each other. This prevents the electrode gap 16 from being sealed off in the prechamber body 20, and when the spark plug 100 needs to be repaired or maintained, only the prechamber body 20 needs to be removed from the spark plug body 10, and after the inspection or maintenance of the electrode gap 16 is completed, the prechamber body 20 can be reattached to the spark plug body 10. The electrode gap in the spark plug is convenient to test, daily repair and maintenance and the like, the detection rate and the maintenance rate of the spark plug 100 can be effectively improved, the rejection rate of the spark plug 100 is reduced, the service life of the spark plug 100 is prolonged, the utilization rate of the spark plug 100 is effectively improved, and the use cost is reduced.
Wherein, the prechamber body 20 and the spark plug body 10 can be detachably connected by a screw thread. Specifically, if the spark plug body 10 has a first external thread (not shown) on the outer wall thereof, a first internal thread (not shown) may be provided on the inner wall of one end of the prechamber body 20 to mate with the first external thread. Thus, the prechamber body 20 and the spark plug body 10 can be detachably connected by the first external thread and the first internal thread. The spark plug is simple in structure, reliable in connection, convenient to detach and convenient to achieve, and the cost of the spark plug 100 can be effectively reduced while the spark plug body 10 and the prechamber body 20 are guaranteed to be stably and reliably connected.
Moreover, the connection between the prechamber body 20 and the spark plug body 10 through a thread manner also has good sealing performance, and a further sealing structure is conveniently added, so that natural gas can be effectively prevented from leaking from the connection part of the prechamber body 20 and the spark plug body 10, accidents caused by natural gas leakage are avoided, and the reliability and the safety of the spark plug 100 are effectively improved.
The first external thread and the first internal thread can be of various types, for example, the thread form can be triangular, trapezoidal, rectangular or zigzag, and the thread can be left-handed thread or right-handed thread. Specifically, the tooth type and the spiral line type of the first external thread and the first internal thread and the setting of other parameters can be selected and set according to specific scene requirements.
Fig. 3 is a schematic structural view of a spark plug body according to an embodiment of the present application, and fig. 4 is a sectional view of the spark plug body according to the embodiment of the present application.
Referring to fig. 3 and 4, the spark plug body 10 has a housing 13 at one end, such as the housing 13 at the end of the spark plug body 10 adjacent to the prechamber body 20, and the first external thread may be provided on an outer wall of the housing 13, such as an outer wall of the housing 13 adjacent to the end of the prechamber body 20.
Specifically, the housing 13 of the spark plug may include a first section 131, a second section 132, and a third section 133 connected in sequence, wherein a first external thread may be disposed on an outer circumference of the first section 131, so that the chamber 21 of the prechamber body 20 may be screwed on the first section 131 of the spark plug body 10.
The second segment 132 is located between the first segment 131 and the third segment 133, wherein a first abutting portion 1321 may be provided on the second segment 132, and a first abutting surface (not shown in the figure) is formed on an end surface of the first abutting portion 1321 departing from the third segment 133. When the prechamber body 20 is fitted over the first stage 131 of the spark plug body 10, the end of the prechamber body 20 at one end may abut against the first abutting surface, so that the first abutting portion 1321 abuts against one end of the prechamber body 20 (see fig. 1). This enables the first abutting portion 1321 to position and limit the prechamber body 20 in the longitudinal direction of the plug body 10, and enables the prechamber body 20 to be mounted at a reasonable position with respect to the plug body 10, thereby further improving the structural stability and reliability of the spark plug 100, facilitating assembly, and contributing to improvement of assembly efficiency.
The first contact surface may be further provided with a first seal 15, and the first seal 15 is positioned between the end surface of one end of the prechamber body 20 and the first contact surface (see fig. 1), so that the first seal 15 can effectively improve the sealing property of the connection between the prechamber body 20 and the spark plug body 10, and the reliability and safety of the spark plug 100 can be further improved.
The forming material of the first sealing element 15 may be various metal materials, such as copper and steel, wherein, taking copper as an example, the copper sealing element has better high temperature resistance and corrosion resistance, and copper has a higher expansion coefficient, so that the copper sealing element is not easy to expand with heat and contract with cold at high temperature, and the deformation of the first sealing element 15 at high temperature can be effectively prevented, thereby effectively avoiding the leakage caused by the deformation of the first sealing element 15. The reliability and safety of the spark plug 100 are further improved.
In addition, a first operation portion 1331 may be provided on the third section 133 of the spark plug body 10, wherein the first operation portion 1331 includes a plurality of outer wall surfaces arranged at an angle. When the first segment 131 of the spark plug body 10 is screwed into the cavity 21 of the prechamber body 20, the first operation portion 1331 facilitates screwing operation and the like of the spark plug, facilitates operation, and facilitates improvement of assembly efficiency of the spark plug 100.
For example, an operating tool may be engaged with the outer circumference of the first operating portion 1331, and the first section 131 of the spark plug body 10 may be easily and effectively mounted into the chamber 21 of the pre-chamber body 20 by rotating the handle of the operating tool according to the lever principle, thereby achieving high assembly efficiency.
The first operation portion 1331 may include four or more even number of outer wall surfaces arranged at an angle, wherein the two opposite outer wall surfaces are parallel, so that the operation tool can be more stably and reliably clamped on the periphery of the first operation portion 1331, and the slipping phenomenon is not easy to occur in the rotating process of the operation tool, thereby effectively improving the reliability and stability of the installation operation of the spark plug body 10, and further improving the installation efficiency between the spark plug body 10 and the prechamber body 20.
Fig. 5 is a schematic structural view of a prechamber body according to an embodiment of the present disclosure, and fig. 6 is a cross-sectional view of the prechamber body according to an embodiment of the present disclosure.
A second external thread (not shown) is further provided on the outer wall of the prechamber body 20, and the spark plug 100 can be connected to an engine (not shown) through the second external thread. If a fitting hole may be provided in the block of the engine, a second internal thread that mates with the second external thread may be provided on an inner wall of the fitting hole, and the spark plug 100 may be mounted to the block of the engine by the mating of the second external thread and the second internal thread.
As shown in fig. 5 and 6, a second contact portion 22 may be further provided at one end of the prechamber body 20, and the second contact portion 22 may form a second contact surface (not shown) on an end surface of the one end adjacent to the other end of the prechamber body 20. When the spark plug 100 is mounted on an engine, the second abutment 22 may abut against the outside of the block of the engine to position and position the spark plug 100 such that only one end of the prechamber body 20 of the spark plug 100 is located inside the block and the rest is located outside the block to ensure proper operation of the spark plug 100 in the engine.
The second abutting surface abuts against the end surface of the outer side of the cylinder body, the second sealing piece 23 can be arranged on the second abutting surface, when the spark plug 100 is installed on an engine, the second sealing piece 23 is located between the second abutting surface and the end surface of the outer side of the cylinder body, the second sealing piece 23 can play a sealing role, the sealing performance of a connecting part between the prechamber body 20 and the cylinder body is improved, accordingly, natural gas is effectively prevented from leaking from the connecting part between the prechamber body 20 and the cylinder body, accidents caused by natural gas leakage are avoided, the reliability and the safety of the structure of the spark plug 100 are effectively improved, and the reliability and the safety of the engine are further improved.
The molding material of the second sealing element 23 may be a plurality of metal materials, such as copper and steel, wherein, taking copper as an example, the copper sealing element has better high temperature resistance and corrosion resistance, and copper has a larger expansion coefficient, and is not easy to expand with heat and contract with cold at high temperature, so as to effectively prevent the second sealing element 23 from deforming at high temperature, thereby effectively avoiding the leakage caused by the deformation of the second sealing element 23. The safety of the spark plug 100 is further improved.
Further, a second operation portion 24 is provided at one end of the prechamber body 20. The second operating portion 24 may be located on a side of the second abutting portion 22 away from the other end of the prechamber body 20, and the second operating portion 24 may include a plurality of outer wall surfaces arranged at an angle.
Thus, when the other end of prechamber body 20 is screwed into the engine block, second operating portion 24 facilitates screwing operation of prechamber body 20, facilitates operation, and facilitates improvement of assembly efficiency of prechamber body 20. For example, an operating tool can be engaged with the outer periphery of the second operating portion 24, and the other end of the prechamber body 20 can be easily and effectively mounted in the cylinder body by rotating the handle of the operating tool according to the lever principle, thereby achieving high assembly efficiency.
The second operation portion 24 may include four or more even number of outer wall surfaces arranged at an angle, wherein two opposite outer wall surfaces are parallel. This makes the operating tool more stably and reliably engaged with the outer periphery of the second operating portion 24, and the operating tool is less likely to slip during rotation, so that the reliability of the mounting operation of the prechamber body 20 can be effectively improved, and the mounting efficiency between the spark plug 100 and the engine cylinder can be further improved.
The embodiment of the present application further provides an engine, which at least includes a cylinder and a spark plug 100, wherein a fuel, such as natural gas, may be disposed in the cylinder. Spark plug 100 may be connected to a cylinder of an engine through prechamber body 20, and the other end of prechamber body 20 is located inside the cylinder of the engine, that is, nozzle hole 25 of prechamber body 20 is located inside the cylinder, and when electrode gap 16 in prechamber body 20 generates an electric spark to ignite natural gas in chamber 21 of prechamber body 20, flame in chamber 21 of prechamber body 20 is injected into the cylinder from nozzle hole 25, thereby igniting natural gas in the cylinder and starting the engine.
Specifically, for example, a fitting hole may be provided on the cylinder body to be fitted with the other end of the prechamber body 20, and a second internal thread fitted with the second external thread may be provided on an inner wall of the fitting hole. The other end of prechamber body 20 may extend into the fitting hole and allow the second external thread to interact with the second internal thread to allow prechamber body 20 to be securely attached to the engine block. The spark plug body 10 and the prechamber body 20 are coupled by the cooperation of the first internal thread and the first external thread, so that the spark plug 100 can be coupled to the cylinder block of the engine.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, 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.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, may be used in either the internal or the external relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A spark plug, comprising: a spark plug body and a pre-chamber body;
the spark plug body is provided with a first electrode and a second electrode at one end, and an electrode gap is formed between the first electrode and the second electrode;
the precombustion chamber body has the cavity, a pot head of the precombustion chamber body is established one of the spark plug body is served, just first electrode the second electrode with the electrode gap all is located in the cavity, the precombustion chamber body with the spark plug body passes through the detachable mode and connects.
2. The spark plug of claim 1, wherein the spark plug body has a first external thread on an outer wall of one end thereof, and the pre-chamber body has a first internal thread on an inner wall of one end thereof for engaging with the first external thread, and the pre-chamber body and the spark plug body are detachably connected by engaging with the first external thread and the first internal thread.
3. The spark plug of claim 2 wherein one end of the spark plug body has a housing with the first external thread disposed on an end external wall of the housing adjacent the pre-chamber body.
4. The spark plug of claim 3 wherein said housing includes first, second and third segments connected in series, said first external thread being disposed on said first segment, said second segment being located between said first and third segments;
the second section is provided with a first abutting part, one end face of the first abutting part, which deviates from the third section, forms a first abutting surface, one end of the precombustion chamber body is sleeved on the first section, and the end part of one end of the precombustion chamber body abuts against the first abutting surface.
5. The spark plug of claim 4, further comprising a first seal disposed between an end of one end of the pre-chamber body and the first abutment surface.
6. The spark plug of claim 5 wherein said third segment has a first operating portion thereon, said first operating portion including a plurality of angularly disposed outer wall surfaces.
7. The spark plug of any of claims 1 to 6, wherein the outer wall of the pre-chamber body is provided with a second external thread.
8. The spark plug according to claim 7, wherein the one end of the pre-combustion chamber body has a second abutting portion thereon, and an end surface of one end of the second abutting portion adjacent to the other end of the pre-combustion chamber body forms a second abutting surface;
the sealing device further comprises a second sealing element, and the second sealing element is arranged on the second abutting surface.
9. The spark plug of claim 8, wherein the pre-chamber body further includes a second operating portion at one end thereof, the second operating portion being located on a side of the second abutment portion facing away from the other end of the pre-chamber body, the second operating portion including a plurality of angularly disposed outer wall surfaces.
10. An engine comprising a cylinder block and a spark plug as claimed in any one of claims 1 to 9, said spark plug being provided on said cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121854350.6U CN215595771U (en) | 2021-08-09 | 2021-08-09 | Spark plug and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121854350.6U CN215595771U (en) | 2021-08-09 | 2021-08-09 | Spark plug and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215595771U true CN215595771U (en) | 2022-01-21 |
Family
ID=79880758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121854350.6U Active CN215595771U (en) | 2021-08-09 | 2021-08-09 | Spark plug and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215595771U (en) |
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2021
- 2021-08-09 CN CN202121854350.6U patent/CN215595771U/en active Active
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