CN210668988U - Engine ignition device and engine - Google Patents
Engine ignition device and engine Download PDFInfo
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- CN210668988U CN210668988U CN201921658054.1U CN201921658054U CN210668988U CN 210668988 U CN210668988 U CN 210668988U CN 201921658054 U CN201921658054 U CN 201921658054U CN 210668988 U CN210668988 U CN 210668988U
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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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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model provides an engine ignition device and an engine, the engine ignition device comprises a spark plug bush and a spark plug, the tail end of the spark plug bush is provided with a baffle, and the baffle is provided with a nozzle; the spark plug extends into the spark plug bush from the head end of the spark plug bush, and the ignition end of the spark plug, the spark plug bush and the baffle plate enclose a pre-combustion chamber; the spark plug bush is used for penetrating in the mounting hole on the cylinder cover; when the spark plug is installed, the spark plug bush is directly arranged in the installation hole in the cylinder cover in a penetrating way, and the baffle plate is arranged towards the cylinder body; with earlier sleeve pipe and casing threaded connection to form the prechamber, compare in stretching into the mounting hole with sleeve pipe and casing again, the spark plug wears to establish behind the spark plug bush, can form the prechamber in the spark plug bush, need not to set up the casing, simplified the installation.
Description
Technical Field
The utility model relates to an engine equipment technique especially relates to an engine ignition and engine.
Background
The engine is started by igniting gas or a mixture of gasoline and air in the cylinder body through the spark plug, generally, a mounting hole communicated with the cylinder body is formed in the cylinder cover, the spark plug is arranged in the mounting hole, an ignition end of the spark plug is arranged close to the cylinder body, and when the engine works, the ignition end generates sparks to ignite the mixture in the cylinder body; however, the spark plug has a limited ignition capability and tends to cause insufficient combustion of the mixture.
In the related art, a pre-chamber is often utilized to enhance the ignition capability of the spark plug. Fig. 1 is a schematic view showing a structure of an ignition device of an engine in the related art, as shown in fig. 1. The engine ignition device includes: the spark plug comprises a sleeve 40, a spark plug 50 and a shell 100, wherein the sleeve 40 is arranged in a mounting hole formed in a cylinder cover 10, an external thread is formed at one end, facing a cylinder body 30, of the sleeve 40, the shell 100 is enclosed into a pre-combustion chamber 60, a nozzle communicated with the pre-combustion chamber 60 is arranged at one end, facing the cylinder body 30, of the shell 100, an internal thread is formed at one end, facing away from the cylinder body 30, of the shell 100, and the internal thread is matched with the external; the cylinder head 10 is installed at the front end of the cylinder body 30, the cylinder head 10 and the cylinder body 30 enclose a main combustion chamber 70, the prechamber 60 and the main combustion chamber 70 are communicated through a nozzle, and the spark plug 50 is arranged in the sleeve 40. In use, piston 20 in cylinder 30 is moved towards cylinder head 10, compressing the mixture in cylinder 30, and part of the mixture passes through the nozzle and enters prechamber 60; the spark plug 50 generates a spark to ignite the mixture in the prechamber 60 to burn, and the flame in the prechamber 60 is injected through the nozzle into the main combustion chamber 70 to ignite the mixture in the main combustion chamber 70, so that the mixture is fully combusted.
However, with the above structure, when the mounting is performed, the internal thread of the housing 100 is engaged with the external thread of the sleeve 40, and then the sleeve 40 and the housing 100 are inserted into the mounting hole, which complicates the mounting process.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an engine ignition and engine to solve the complicated technical problem of engine ignition installation.
On the one hand, the embodiment of the utility model provides an engine ignition device, include: the spark plug comprises a spark plug bush and a spark plug, wherein a baffle plate is arranged at the tail end of the spark plug bush, and a nozzle is arranged on the baffle plate; the spark plug extends into the spark plug bush from the head end of the spark plug bush, and a pre-combustion chamber is formed by the ignition end of the spark plug, the spark plug bush and the baffle plate; the spark plug bush is used for penetrating in the mounting hole on the cylinder cover.
The ignition device of the engine as described above, wherein a first internal thread is provided on an inner wall of the spark plug bush, and a first external thread is provided on the spark plug, the first internal thread being engaged with the first external thread.
The engine ignition device as described above, wherein an annular mounting flange is provided on an inner wall of the spark plug bush, the first internal thread being provided on an inner side face of the annular mounting flange; and a stop flange is arranged on the spark plug, and a sealing ring is arranged between the stop flange and the annular mounting flange.
The engine ignition device as described above, wherein a second external thread is provided on an outer wall of the spark plug bush, the second external thread being adapted to mate with a second internal thread on an inner wall of the mounting hole.
The ignition device for the engine as described above, wherein the first external thread and the second external thread have the same direction of rotation.
The engine ignition device according to the above, wherein the head end of the spark plug bush is provided with a fastening portion.
The engine ignition device according to the above, wherein the fastening portion includes a fastening groove provided at a head end of the spark plug bush.
The engine ignition device of above, wherein said spark plug bushing is adapted to have an interference fit with said mounting hole.
The engine ignition device as described above, wherein the spark plug bush inner wall is provided with a third internal thread for connection with a pulling tool.
On the other hand, the embodiment of the utility model provides an engine, including cylinder body, cylinder cap, piston, bent axle and arbitrary engine ignition.
The embodiment of the utility model provides an engine ignition and engine, engine ignition includes spark plug bush and spark plug, and the end of spark plug bush is provided with the baffle, is provided with the nozzle on the baffle; the spark plug extends into the spark plug bush from the head end of the spark plug bush, and the ignition end of the spark plug, the spark plug bush and the baffle plate enclose a pre-combustion chamber; the spark plug bush is used for penetrating in the mounting hole on the cylinder cover; when the spark plug is installed, the spark plug bush is directly arranged in the installation hole in the cylinder cover in a penetrating way, and the baffle plate is arranged towards the cylinder body; with earlier sleeve pipe and casing threaded connection to form the prechamber, compare in stretching into the mounting hole with sleeve pipe and casing again, the spark plug wears to establish behind the spark plug bush, can form the prechamber in the spark plug bush, need not to set up the casing, simplified the installation.
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 described 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 view showing the structure of an ignition device of an engine according to the related art;
fig. 2 is a schematic structural diagram of an engine ignition device provided by an embodiment of the present invention;
FIG. 3 is a first schematic structural diagram of a spark plug bushing in an engine ignition device according to an embodiment of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic structural diagram of a spark plug bushing in an engine ignition device according to an embodiment of the present invention;
fig. 6 is a top view of fig. 5.
Description of reference numerals:
10: a cylinder cover;
101: mounting holes;
20: a piston;
30: a cylinder body;
40: a sleeve;
50: a spark plug;
60: a precombustion chamber;
70: a main combustion chamber;
80: a spark plug bushing;
801: an annular mounting flange;
802: screwing the groove;
803: a second external thread;
804: a third internal thread;
90: a baffle plate;
901: a nozzle;
100: a housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an engine ignition device provided by an embodiment of the present invention. As shown in fig. 2, the present embodiment provides an engine ignition device including: the spark plug comprises a spark plug bush 80 and a spark plug 50, wherein a baffle plate 90 is arranged at the tail end of the spark plug bush 80, and a nozzle 901 is arranged on the baffle plate 90; the spark plug 50 extends into the spark plug bushing 80 from the head end of the spark plug bushing 80, and the ignition end of the spark plug 50, the spark plug bushing 80, and the baffle plate 90 enclose the prechamber 60; the spark plug bush 80 is inserted into a mounting hole 101 formed in the cylinder head 10.
For example, the present invention provides an engine ignition device disposed on an engine for igniting a mixture in a cylinder to start the engine, wherein the engine may be a gas engine, for example, a gas engine with a cylinder diameter of 100-150mm, or a gasoline engine, etc. In this regard, the present embodiment is not limited thereto.
Specifically, the engine includes: a cylinder body, a cylinder head 10, a piston and a crankshaft; the cylinder body is internally provided with a cavity, the top end of the cylinder body is provided with an opening, the cylinder cover 10 is arranged at the top end of the cylinder body to seal the opening, the cylinder cover 10 is connected with the cylinder body through a bolt, and the cylinder cover 10 is provided with a mounting hole 101 communicated with the cavity; the piston is arranged in the cavity of the cylinder body, the outer wall of the piston is matched with the side wall of the cavity, and the piston is in transmission connection with the crankshaft through a connecting rod. When the engine works, the piston does reciprocating linear motion in the cavity, and when the piston runs to the highest position, namely the extreme position of the top end of the piston, which is farthest away from the rotation center of the crankshaft, is a top dead center; when the piston moves to the lowest position, namely the extreme position of the piston top end closest to the rotation center of the crankshaft, the piston is at the bottom dead center. When the piston moves to the top dead center, the top end of the piston, the cylinder body and the cylinder head 10 enclose a main combustion chamber 80.
The head end of the spark plug bushing 80 is the end of the spark plug bushing 80 facing away from the cylinder block, and the tail end of the spark plug bushing 80 is the end of the spark plug bushing 80 facing toward the cylinder block. The spark plug bush 80 has a cylindrical structure with an opening at the head end, so that the spark plug 50 can be inserted into the spark plug bush 80 through the head end of the spark plug bush 80; the baffle 90 is arranged at the tail end of the spark plug bush 80 to seal the tail end opening, wherein the baffle 90 can be in a regular shape such as a round shape or a square shape, and can also be in other irregular shapes as long as the tail end opening can be sealed; further, the baffle 90 and the spark plug insert 80 may be joined by welding, and preferably, the baffle 90 and the spark plug insert 80 are integrally formed by forging.
In this embodiment, the nozzle 901 may be a nozzle. Alternatively, the nozzle 901 is a through hole communicating with the inside of the spark plug bush 80; the through hole may be circular or square, and this embodiment is not limited thereto.
The firing end of the spark plug 50 includes a center electrode 502 and a side electrode 503, both the center electrode 502 and the side electrode 503 are connected to a power source, and a gap is provided between the center electrode 502 and the side electrode 503. The spark plug 50 is mounted inside the spark plug bush 80 from the head end of the spark plug bush 80 with the center electrode 502 and the side electrode 503 facing the cylinder block; when spark plug 50 is installed inside spark plug bushing 80, the firing end of spark plug 50, spark plug bushing 80, and baffle 90 enclose prechamber 60. By adjusting the shape of the inner wall of spark plug liner 80, prechamber 60 may be cylindrical, conical, or hemispherical, although this embodiment is not limited thereto.
The process of installing the engine ignition device on the engine provided by the embodiment comprises the following steps: firstly, the spark plug bush 80 is arranged in the mounting hole 101 of the cylinder cover 10 in a penetrating way, the baffle plate 90 is arranged towards the cylinder body, and the spark plug bush 80 is connected with the cylinder cover 10; then, the ignition end of the spark plug 50, the baffle plate 90, and a part of the spark plug bush 80 are enclosed in the prechamber 60 when the spark plug 50 is inserted into the spark plug bush 80 from the head end of the spark plug bush 80, the center electrode 502 and the side electrode 503 are provided toward the cylinder block, and the spark plug 50 is connected to the spark plug bush 80.
The working process of the engine ignition device applied to the engine provided by the embodiment comprises a compression stroke and a power stroke:
in the compression stroke, the crankshaft rotates to drive the piston to move from the bottom dead center to the top dead center, so as to compress the mixture in the cylinder, the pressure in the cylinder is increased, part of the mixture enters the precombustion chamber 60 through the nozzle 901 until the piston reaches the top dead center, the compression stroke is finished, at this time, the top end of the piston, the cylinder and the cylinder cover 10 are enclosed to form a main combustion chamber 80, and the precombustion chamber 60 is communicated with the main combustion chamber 80 through the nozzle 901;
in the power stroke, a power supply introduces high-voltage current into the spark plug 50, so that the central electrode 502 is electrified and discharges in the gap between the central electrode 502 and the side electrode 503, the current breaks down the mixture to generate sparks, and then ignites the mixture in the pre-combustion chamber 60, the flame in the pre-combustion chamber 60 is sprayed into the main combustion chamber 80 through the nozzle 901, and then the mixture in the main combustion chamber 80 is ignited, so that the mixture in the main combustion chamber 80 is fully combusted; meanwhile, the mixture in the main combustion chamber 80 expands after combustion, thereby pushing the piston to move from the top dead center to the bottom dead center, and the crankshaft rotates through the connecting rod until the piston reaches the bottom dead center, and the power stroke is finished.
In the engine ignition device provided by the embodiment, the tail end of the spark plug bushing 80 is provided with the baffle plate 90, and the baffle plate 90 is provided with the nozzle 901; the spark plug 50 extends into the spark plug bushing 80 from the head end of the spark plug bushing 80, and the ignition end of the spark plug 50, the spark plug bushing 80, and the baffle plate 90 enclose the prechamber 60; the spark plug bush 80 is used for being arranged in the mounting hole 101 on the cylinder cover 10 in a penetrating mode; during installation, the spark plug bush 80 is directly arranged in the installation hole 101 of the cylinder cover 10 in a penetrating way, and the baffle plate 90 is arranged towards the cylinder body; compared with the method that the sleeve and the shell are connected in a threaded mode to form the pre-combustion chamber, and then the sleeve and the shell extend into the mounting hole, the spark plug 50 can form the pre-combustion chamber 60 in the spark plug bush 80 after penetrating through the spark plug bush 80 without arranging the shell, and the mounting process is simplified.
Meanwhile, the spark plug bush 80 is of an integral structure, and compared with the threaded connection of the sleeve and the shell, the sealing performance is good; in addition, when the volume of the mixture in the cylinder is large, by arranging the prechamber 60, during a compression stroke, part of the mixture enters the prechamber 60 through the nozzle 901 under the action of pressure to burn, so that the volume of the mixture in the main combustion chamber 80 is reduced, and the phenomenon that the mixture in the main combustion chamber 80 burns to release a large amount of heat, which causes high heat load of the cylinder and reduces the service life and safety of the engine is avoided.
Preferably, a first internal thread is provided on an inner wall of the spark plug bushing 80, and a first external thread is provided on the spark plug 50, and the first internal thread is engaged with the first external thread, so that the spark plug 50 and the spark plug bushing 80 are connected by a screw thread, and the connection relationship is reliable.
Preferably, an annular mounting flange 801 is provided on an inner wall of the spark plug bush 80, a first internal thread is provided on an inner side surface of the annular mounting flange 801, and the spark plug 50 is screwed with the inner side surface of the annular mounting flange 801; the spark plug 50 is provided with a stopper flange 501, and a seal ring is provided between the stopper flange 501 and the annular mounting flange 801. With the above arrangement, on the one hand, the movement of the spark plug 50 is prevented, the position of the spark plug 50 inside the spark plug bush 80 is restricted, and at the same time, the spark plug 50 is supported by the annular mounting flange 801; on the other hand, the seal ring can close the gap between the spark plug 50 and the inner wall of the spark plug bush 80, and prevent the mixture in the prechamber 60 from overflowing from the gap. Wherein the annular mounting flange 801 is disposed between the head end and the tail end of the spark plug bushing 80 with a gap from the head end of the spark plug bushing 80. In addition, the sealing ring can be made of metal or rubber; the sealing ring may be fitted over the spark plug 50 or may be fitted over the annular mounting flange 801 for passage of the spark plug 50.
The connection manner of the spark plug bush 80 and the mounting hole 101 on the cylinder head 10 includes, but is not limited to, the following possible implementation manners:
referring to fig. 2 to 4, fig. 3 is a first schematic structural diagram of a spark plug bushing in an engine ignition device according to an embodiment of the present invention; fig. 4 is a top view of fig. 3. As shown in fig. 3 and 4, one way that can be achieved is: the outer wall of one end, facing the cylinder body, of the spark plug bush 80 is provided with a second external thread 803, the inner wall of the mounting hole 101 is provided with a second internal thread, and the second external thread 803 is matched with the second internal thread, so that the spark plug bush 80 is in threaded connection with the mounting hole 101 in the cylinder cover 10, and the connection relation is reliable.
Preferably, the first external thread is in the same direction as the second external thread 803, and the first internal thread is in the same direction as the second internal thread. Through the arrangement, after the spark plug bush 80 is installed on the cylinder head 10, when the spark plug 50 is installed, the spark plug bush 80 is driven to be screwed when the spark plug 50 is screwed, so that the connection between the spark plug bush 80 and the cylinder head 10 is more tight, and meanwhile, the phenomenon that the spark plug bush 80 is loosened and the leakage is caused due to the sealing failure between the spark plug bush 80 and the cylinder head 10 when the spark plug 50 is screwed is avoided, and the anti-loosening effect is achieved.
In this embodiment, the head end of the spark plug bush 80 is provided with a fastening portion, and the attachment/detachment tool is connected to the spark plug bush 80 through the fastening portion, and the attachment/detachment tool is operated to attach/detach the spark plug bush 80 to/from the cylinder head 10, thereby attaching/detaching the spark plug bush 80.
Alternatively, the screwing part may include a screwing groove 802 provided at the head end of the spark plug bush 80, the handling tool is a rotatable cylinder, the rotation axis is the center line of the cylinder, and the top end of the cylinder is provided with a protrusion which is matched with the screwing groove 802; when the plug is used, the bulge on the column body is clamped in the screwing groove 802, so that the assembling and disassembling tool is connected with the spark plug bush 80, then the column body is rotated to drive the spark plug bush 80 to rotate, and the installation and the disassembly of the spark plug bush 80 are realized. Further, the number of the tightening grooves 802 may be plural, and the plural tightening grooves 802 are provided at intervals in the circumferential direction at the head end of the spark plug bushing 80; for example, there are two tightening grooves 802, the two tightening grooves 802 are symmetrically disposed, and correspondingly, two protrusions are symmetrically disposed on the top end of the column body.
Alternatively, the tightening part may also include a hexagonal socket disposed at the head end of the spark plug bushing 80, and the mounting and dismounting tool is a hexagonal wrench; during the use, establish the hexagonal spanner card earlier on the hexagonal tube nest, rotate the hexagonal spanner again, and then drive spark plug bush 80 corotation or reversal for spark plug bush 80 installs on cylinder cap 10 or demolishs from cylinder cap 10.
Referring to fig. 2, 5 and 6, fig. 5 is a schematic structural diagram of a spark plug bushing in an engine ignition device according to an embodiment of the present invention; fig. 6 is a top view of fig. 5. As shown in fig. 5 and 6, another way to achieve this is: the spark plug bushing 80 is adapted to have an interference fit with the mounting hole 101. Through the arrangement, on one hand, the spark plug bush 80 is tightly connected with the mounting hole 101, and no gap exists between the spark plug bush 80 and the mounting hole 101, so that a sealing effect is achieved; on the other hand, since the connection method is simple, the process of attaching and detaching the spark plug bush 80 to and from the cylinder head 10 is simple and the attachment and detachment is convenient.
Preferably, the inner wall of the end of the spark plug bush 80 facing away from the cylinder body is provided with a third internal thread 804, the third internal thread 804 is used for connecting with a pulling tool, and the spark plug bush 80 is inserted into the mounting hole 101 or pulled out from the mounting hole 101 by the pulling tool, so that the spark plug bush 80 is assembled and disassembled. Wherein, the pulling tool can be a pipe body, a third external thread is arranged on the outer wall of the top end of the pipe body, and a third internal thread 804 is matched with the third external thread. When in use, the top end of the pipe body is aligned with the head end of the spark plug bush 80, the pipe body is screwed, so that the third external thread at the top end of the pipe body is matched with the third internal thread 804 of the spark plug bush 80, and the spark plug bush 80 is in threaded connection with a drawing tool; the tube body is pulled again to pull out the spark plug bush 80 from the mounting hole 101 so that the spark plug bush 80 is removed from the cylinder head 10, or the tube body is pushed to insert the spark plug bush 80 into the mounting hole 101 so that the spark plug bush 80 is mounted to the cylinder head 10.
On the basis of the above embodiment, the number of the nozzles 901 may be plural, and the plural nozzles 901 are arranged on the baffle plate 90 at intervals in the circumferential direction, so that when the engine ignition device is ignited, the flame in the prechamber 60 is emitted to all directions of the main combustion chamber 80 through the nozzles 901, thereby the mixture in the main combustion chamber 80 is sufficiently combusted. With continued reference to fig. 4 and 6, and taking the orientation shown in fig. 4 and 6 as an example, the baffle 90 is provided with 7 nozzles 901, wherein one nozzle 901 is disposed at the center of the baffle 90, and faces the main combustion chamber 80; the other nozzles 901 are uniformly distributed on the baffle 90 with the center position of the baffle 90 as the center of the circle.
With continued reference to fig. 2-6. The embodiment of the utility model provides a still provide an engine, including cylinder body, cylinder cap 10, piston, bent axle and engine ignition, wherein, engine ignition's structure and function have all carried out detailed description in above-mentioned embodiment, and the no longer repeated description here.
The embodiment of the utility model provides an engine, engine ignition includes spark plug bush 80 and spark plug 50, and the end of spark plug bush 80 is provided with baffle 90, is provided with nozzle 901 on baffle 90; the spark plug 50 extends into the spark plug bushing 80 from the head end of the spark plug bushing 80, and the ignition end of the spark plug 50, the spark plug bushing 80, and the baffle plate 90 enclose the prechamber 60; the spark plug bush 80 is used for being arranged in the mounting hole 101 on the cylinder cover 10 in a penetrating mode; during installation, the spark plug bush 80 is directly arranged in the installation hole 101 of the cylinder cover 10 in a penetrating way, and the baffle plate 90 is arranged towards the cylinder body; compared with the method that the sleeve and the shell are connected in a threaded mode to form the pre-combustion chamber, and then the sleeve and the shell extend into the mounting hole, the spark plug 50 can form the pre-combustion chamber 60 in the spark plug bush 80 after penetrating through the spark plug bush 80 without arranging the shell, and the mounting process is simplified.
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", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless explicitly stated otherwise, the terms "mounting," "connecting," "fixing," and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected internally or in any other manner known to those skilled in the art, unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An engine ignition device, comprising: the spark plug comprises a spark plug bush and a spark plug, wherein a baffle plate is arranged at the tail end of the spark plug bush, and a nozzle is arranged on the baffle plate; the spark plug extends into the spark plug bush from the head end of the spark plug bush, and a pre-combustion chamber is formed by the ignition end of the spark plug, the spark plug bush and the baffle plate; the spark plug bush is used for penetrating in the mounting hole on the cylinder cover.
2. The engine ignition device of claim 1, wherein said spark plug bushing has a first internal thread disposed on an inner wall thereof, said spark plug having a first external thread disposed thereon, said first internal thread mating with said first external thread.
3. The engine ignition device of claim 2, wherein an annular mounting flange is provided on an inner wall of the spark plug bushing, the first internal threads being provided on an inner side surface of the annular mounting flange; and a stop flange is arranged on the spark plug, and a sealing ring is arranged between the stop flange and the annular mounting flange.
4. The engine ignition device of claim 2, wherein the spark plug bushing has a second external thread disposed on an outer wall thereof for mating with a second internal thread disposed on an inner wall of the mounting hole.
5. The engine ignition device of claim 4, wherein the first external thread is of the same hand as the second external thread.
6. The engine ignition device according to claim 4, wherein a head end of the spark plug bush is provided with a fastening portion.
7. The engine ignition device according to claim 6, wherein the tightening portion includes a tightening groove provided at a head end of the spark plug bush.
8. The engine ignition device of claim 1, wherein said spark plug bushing is configured for an interference fit with said mounting hole.
9. The engine ignition device of claim 8, wherein said spark plug bushing inner wall is provided with a third internal thread for connection with a pulling tool.
10. An engine comprising a cylinder block, a cylinder head, a piston, a crankshaft and an engine ignition device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921658054.1U CN210668988U (en) | 2019-09-30 | 2019-09-30 | Engine ignition device and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921658054.1U CN210668988U (en) | 2019-09-30 | 2019-09-30 | Engine ignition device and engine |
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| Publication Number | Publication Date |
|---|---|
| CN210668988U true CN210668988U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921658054.1U Active CN210668988U (en) | 2019-09-30 | 2019-09-30 | Engine ignition device and engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122915A (en) * | 2021-11-05 | 2022-03-01 | 奇瑞汽车股份有限公司 | Pre-combustion chamber spark plug assembly and engine |
| CN115111046A (en) * | 2022-01-27 | 2022-09-27 | 长城汽车股份有限公司 | Pre-combustion chamber of engine and engine |
-
2019
- 2019-09-30 CN CN201921658054.1U patent/CN210668988U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114122915A (en) * | 2021-11-05 | 2022-03-01 | 奇瑞汽车股份有限公司 | Pre-combustion chamber spark plug assembly and engine |
| CN115111046A (en) * | 2022-01-27 | 2022-09-27 | 长城汽车股份有限公司 | Pre-combustion chamber of engine and engine |
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