CN216157802U - Ignition assembly and natural gas engine - Google Patents
Ignition assembly and natural gas engine Download PDFInfo
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- CN216157802U CN216157802U CN202122216757.2U CN202122216757U CN216157802U CN 216157802 U CN216157802 U CN 216157802U CN 202122216757 U CN202122216757 U CN 202122216757U CN 216157802 U CN216157802 U CN 216157802U
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Abstract
The utility model relates to the technical field of engines and discloses an ignition assembly and a natural gas engine, wherein the ignition assembly comprises a cylinder head cover, an ignition coil, a bushing and a coil sheath, wherein the cylinder head cover is provided with a mounting hole, and the bushing is arranged in the mounting hole; the coil sheath comprises a first part and a second part, and the second part is inserted in the lining and has a gap with the lining; the ignition coil comprises a body and a connecting lug, and is arranged on the cylinder cover through the connecting lug; the first part and the connecting lug are matched to define a first exhaust channel; the first part is provided with a through hole which is communicated with a gap between the second part and the lining; the first part and the body are matched to define a second exhaust channel; through-hole and first exhaust passage all communicate with second exhaust passage, and the one end that second exhaust passage was kept away from to first exhaust passage can communicate with the external world. The ignition assembly and the natural gas engine improve the problem that the risk that water flows into the inner part of the lining from the exhaust hole at the top of the ignition coil sheath is high.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to an ignition assembly and a natural gas engine.
Background
Among the prior art, the top of natural gas sender ignition coil sheath is equipped with the horizontally exhaust hole, and this exhaust hole communicates with the clearance between bush and the ignition coil sheath to the gaseous exhaust of interior the stringing into ignition coil bush. It has problems in that: when the natural gas engine is washed or rained, the risk that water flows into the inner part of the lining through the exhaust hole is high, and the water flows into the inner part of the lining, so that a series of faults such as the corrosion of the lining and the damage of the spark plug are caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ignition assembly and a natural gas engine, which are used for solving the problem that the risk that water flows into a lining from an exhaust hole at the top of an ignition coil sheath when the natural gas engine in the prior art is washed or rains is high.
In order to achieve the purpose, the utility model provides the following technical scheme:
an ignition assembly comprising a cylinder head cover, an ignition coil, a bushing, and a coil boot, wherein:
the cylinder head cover is provided with a mounting hole, and the lining is arranged in the mounting hole;
the coil sheath comprises a first part and a second part which is coaxial with and fixedly connected with the first part, the diameter of the first part is larger than that of the second part, and a cavity which is through along the axis direction of the coil sheath is formed on the coil sheath; the second part is inserted in the bushing and has a gap with the bushing;
the ignition coil comprises a body opposite to the cylinder head cover and a connecting lug arranged on one side of the body facing the cylinder head cover, and the ignition coil is arranged on the cylinder head cover through the connecting lug;
the first portion and the connecting lug cooperate to define a first exhaust channel along the axial direction of the coil sheath; a through hole penetrating the first portion in an axial direction of the coil sheath is formed in the first portion, and the through hole communicates with a gap between the second portion of the coil sheath and the bushing; one end of the first part, which is far away from the second part, is hermetically connected with the body and is matched with the body to define a second exhaust channel; the through-hole with first exhaust passage all with second exhaust passage intercommunication, just first exhaust passage keeps away from the one end of second exhaust passage can communicate with the external world.
The utility model provides an ignition assembly which comprises a cylinder cover, a lining arranged in a mounting hole of the cylinder cover, a coil sheath inserted in the lining, and an ignition coil arranged on the cylinder cover and in sealing fit with a first part of the coil sheath, wherein a second part of the coil sheath is inserted in the lining, and a gap is reserved between the second part of the coil sheath and the lining. The first part of the coil sheath is matched with the connecting lug to define a first exhaust channel along the axial direction of the coil sheath, a through hole penetrating through the first part in the axial direction of the coil sheath is formed in the first part of the coil sheath, and the through hole can be communicated with a gap between the second part of the coil sheath and the lining; the end, far away from the second portion, of the first portion of the coil sheath is hermetically connected with the body of the ignition coil and is matched with the body of the ignition coil to limit a second exhaust channel, the through hole in the first portion of the coil sheath and the first exhaust channel are communicated with the second exhaust channel, the through hole can be communicated with a gap between the second portion of the coil sheath and the lining, and the end, far away from the second exhaust channel, of the first exhaust channel can be communicated with the outside, so that a channel exhausting from the lining to the outside is formed, the channel is led out from the lining, and is folded back to the second portion of the coil sheath by the connecting lug after passing through the first portion of the coil sheath and is finally communicated with the outside; bending at least twice, making the passageway of exhausting to the external world by the bush more tortuous, exhaust route longer, thereby, can reduce or even avoid the natural gas engine to wash or when drenching with rain, the risk that water flows into the bush inside by this gas vent has also had dirt-proof effect concurrently.
In addition, the end of the first part of the coil sheath, which is far away from the second part, is connected with the body of the ignition coil in a sealing mode (for example, the coil sheath has certain elasticity, and after the ignition coil and the coil sheath are installed, the coil sheath is compressed to form a sealing surface with the ignition coil), and the risk of water entering from the top of the coil sheath can be reduced.
Optionally, one end of the first portion, which is far away from the second portion, is formed with a first exhaust groove, and the first exhaust groove cooperates with the body to define the second exhaust passage.
Optionally, a second exhaust groove is formed on a surface of the body facing the first portion, and the second exhaust groove cooperates with the first portion to define the second exhaust channel.
Optionally, a third exhaust groove is formed at one end of the first portion, which is far away from the second portion, and a fourth exhaust groove is formed at one surface of the body, which faces the first portion, and the third exhaust groove and the fourth exhaust groove cooperate to define the second exhaust channel.
Optionally, a fifth exhaust groove is formed at a position of the first portion opposite to the connecting lug, and the fifth exhaust groove cooperates with the connecting lug to define the first exhaust channel.
Optionally, a sixth exhaust groove is formed at a position of the engaging lug opposite to the first portion, and the sixth exhaust groove cooperates with the first portion to define the first exhaust channel.
Optionally, a seventh exhaust groove is formed in a position of the first portion opposite to the engaging lug, an eighth exhaust groove is formed in a position of the engaging lug opposite to the seventh exhaust groove, and the seventh exhaust groove and the eighth exhaust groove cooperate to define the first exhaust passage.
Optionally, the second exhaust passage extends along the circumferential direction of the cavity, and a first end of the second exhaust passage is communicated with the through hole, and a second end of the second exhaust passage is communicated with the first exhaust passage.
Optionally, the second exhaust passage has a central angle of 270 °.
The utility model also provides a natural gas engine which comprises any one of the ignition assemblies provided in the technical scheme.
The natural gas engine provided by the utility model comprises the ignition assembly, wherein the ignition assembly comprises a cylinder cover, a lining arranged in a mounting hole of the cylinder cover, a coil sheath inserted in the lining and an ignition coil arranged on the cylinder cover and in sealing fit with a first part of the coil sheath, and a second part of the coil sheath is inserted in the lining and has a gap with the lining. The first part of the coil sheath is matched with the connecting lug to define a first exhaust channel along the axial direction of the coil sheath, a through hole penetrating through the first part in the axial direction of the coil sheath is formed in the first part of the coil sheath, and the through hole can be communicated with a gap between the second part of the coil sheath and the lining; the end, far away from the second portion, of the first portion of the coil sheath is hermetically connected with the body of the ignition coil and is matched with the body of the ignition coil to limit a second exhaust channel, the through hole in the first portion of the coil sheath and the first exhaust channel are communicated with the second exhaust channel, the through hole can be communicated with a gap between the second portion of the coil sheath and the lining, and the end, far away from the second exhaust channel, of the first exhaust channel can be communicated with the outside, so that a channel exhausting from the lining to the outside is formed, the channel is led out from the lining, and is folded back to the second portion of the coil sheath by the connecting lug after passing through the first portion of the coil sheath and is finally communicated with the outside; bending at least twice, making the passageway of exhausting to the external world by the bush more tortuous, exhaust route longer, thereby, can reduce or even avoid the natural gas engine to wash or when drenching with rain, the risk that water flows into the bush inside by this gas vent has also had dirt-proof effect concurrently.
In addition, the end of the first part of the coil sheath, which is far away from the second part, is connected with the body of the ignition coil in a sealing mode (for example, the coil sheath has certain elasticity, and after the ignition coil and the coil sheath are installed, the coil sheath is compressed to form a sealing surface with the ignition coil), and the risk of water entering from the top of the coil sheath can be reduced.
Drawings
FIG. 1 is a cross-sectional view of an ignition assembly provided in accordance with an embodiment of the present invention;
FIG. 2 is an isometric view of an ignition assembly provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a coil jacket of an ignition assembly according to an embodiment of the present invention;
FIG. 4 is a partially cut-away schematic view of the coil sheath of FIG. 3;
FIG. 5 is a schematic structural diagram of another ignition assembly provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic view of the structure of an ignition coil in the ignition assembly shown in fig. 5.
Icon: 1-a cylinder head cover; 2-an ignition coil; 21-body; 22-connecting lugs; 221-sixth exhaust groove; 3-a bushing; 4-a coil sheath; 41-first part; 411-a through hole; 412-a first exhaust groove; 42-a second portion; 10-a first exhaust channel; 20-a second exhaust channel; 30-a third exhaust passage; 301-a communication groove; 40-a cover plate; 50-bolt; 60-sealing ring.
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.
As shown in fig. 1 and 2, the present embodiment provides an ignition assembly including a cylinder head cover 1, an ignition coil 2, a liner 3, and a coil sheath 4, wherein:
the cylinder head cover 1 is provided with a mounting hole, and the bush 3 is arranged in the mounting hole;
the coil sheath 4 comprises a first part 41 and a second part 42 coaxially fixed with the first part 41, the diameter of the first part 41 is larger than that of the second part 42, the second part 42 is inserted in the bush 3 and has a gap with the bush 3; meanwhile, the coil sheath 4 is provided with a cavity which is penetrated along the axis direction of the coil sheath;
the ignition coil 2 comprises a body 21 opposite to the cylinder head cover 1 and a connecting lug 22 arranged on one side of the body 21 facing the cylinder head cover 1, and the ignition coil 2 is arranged on the cylinder head cover 1 through the connecting lug 22; specifically, a threaded hole may be formed in the cylinder head cover 1, a through hole may be formed in the engaging lug 22, and the cylinder head cover 1 and the engaging lug 22 may be connected by a bolt 50.
The first portion 41 of the coil sheath 4 cooperates with the engaging lug 22 to define the first exhaust passage 10 in the axial direction of the coil sheath 4; as shown in fig. 3 and 4, the first portion 41 of the coil sheath 4 is formed with a through hole 411 that penetrates the first portion 41 in the axial direction of the coil sheath 4, the through hole 411 communicating with the gap between the second portion 42 of the coil sheath 4 and the bush 3; the end of the first part 41 of the coil sheath 4, which is far away from the second part 42, is connected with the body 21 of the ignition coil 2 in a sealing way and is matched with the body 21 of the ignition coil 2 to define a second exhaust passage 20; the through hole 411 of the first portion 41 of the coil sheath 4 and the first exhaust passage 10 are both communicated with the second exhaust passage 20, and one end of the first exhaust passage 10 away from the second exhaust passage 20 can be communicated with the outside.
The ignition module provided by the present embodiment includes a cylinder head cover 1, a liner 3 disposed in a mounting hole of the cylinder head cover 1, a coil sheath 4 inserted in the liner 3, and an ignition coil 2 disposed on the cylinder head cover 1 and in sealing engagement with a first portion 41 of the coil sheath 4, and a second portion 42 of the coil sheath 4 is inserted in the liner 3 with a gap therebetween. The first portion 41 of the coil sheath 4 cooperates with the engaging lug 22 to define the first exhaust passage 10 in the axial direction of the coil sheath 4, and a through hole 411 is formed in the first portion 41 of the coil sheath 4 to penetrate the first portion 41 in the axial direction of the coil sheath 4, the through hole 411 being capable of communicating with a gap between the second portion 42 of the coil sheath 4 and the bush 3; one end of the first part 41 of the coil sheath 4, which is far away from the second part 42, is hermetically connected with the body 21 of the ignition coil 2 and is matched with the body 21 of the ignition coil 2 to define a second exhaust passage 20, the through hole 411 on the first part 41 of the coil sheath 4 and the first exhaust passage 10 are both communicated with the second exhaust passage 20, the through hole 411 can be communicated with a gap between the second part 42 of the coil sheath 4 and the lining 3, one end of the first exhaust passage, which is far away from the second exhaust passage 20, can be communicated with the outside, so that a passage for exhausting air from the lining 3 to the outside is formed, the passage is led out from the lining 3, passes through the first part 41 of the coil sheath 4, then is folded back to the second part 42 of the coil sheath 4 by the connecting lug 22 and is finally communicated with the outside; bending at least twice, making the passageway of exhausting to the external world by bush 3 more tortuous, exhaust route longer, thereby, can reduce or even avoid the natural gas engine to wash or when drenching with rain, the risk that water flows into inside bush 3 by this gas vent has also had dirt-proof effect concurrently.
Furthermore, the end of the first portion 41 of the coil sheath 4 away from the second portion 42 is sealingly connected to the body 21 of the ignition coil 2 (e.g., the coil sheath 4 has a certain elasticity, and after the ignition coil 2 is mounted to the coil sheath 4, the coil sheath 4 is compressed to form a sealing surface with the ignition coil 2), so that the risk of water entering from the top of the coil sheath 4 can be reduced.
The first portion 41 of the coil sheath 4 cooperates with the connecting lug 22 to define the first exhaust passage 10 along the axial direction of the coil sheath 4, and the first portion 41 of the coil sheath 4 is formed with a through hole 411 penetrating the first portion 41 in the axial direction of the coil sheath 4, for example, the extending direction of the first exhaust passage 10 and the extending direction of the through hole 411 may be parallel to the axial direction of the coil sheath 4 or may intersect the axial direction of the coil sheath 4. For ease of processing, in one specific implementation, the extending direction of the first exhaust passage 10 and the extending direction of the through hole 411 are both parallel to the axial direction of the coil sheath 4.
Illustratively, the head cover 1 is provided with a cover plate 40, the cover plate 40 is provided with a hole for the second portion of the coil sheath 4 to pass through, the edge of the hole in the cover plate is a flange surrounding the hole, the head cover 1 is provided with a sunken groove corresponding to the flange, and a sealing ring 60 is arranged between the flange and the sunken groove.
With continued reference to fig. 2 and 3, in an alternative implementation, an end of the first portion 41 of the coil sheath 4 remote from the second portion 42 is formed with a first exhaust groove 412, and the first exhaust groove 412 cooperates with the body 21 of the ignition coil 2 to define the second exhaust passage 20.
In an alternative embodiment, as shown in fig. 5, a second exhaust duct is formed on the surface of the body 21 of the ignition coil 2 facing the first portion 41 of the coil sheath 4, and cooperates with the first portion 41 of the coil sheath 4 to define the second exhaust passage 20.
In another alternative implementation, a third air vent groove is formed at one end of the first portion 41 of the coil sheath 4 away from the second portion 42, a fourth air vent groove is formed at one surface of the body 21 facing the first portion 41, and the third air vent groove and the fourth air vent groove cooperate to define the second air vent channel 20.
When the first exhaust passage 10 is specifically provided, in an alternative implementation manner, a fifth exhaust groove is formed at a position of the first portion 41 of the coil sheath 4, which is opposite to the connecting lug 22, and the fifth exhaust groove cooperates with the connecting lug 22 to define the first exhaust passage 10.
In another alternative implementation, as shown in fig. 5 and 6, a sixth vent groove 221 is formed in a portion of the engaging lug 22 opposite to the first portion 41 of the coil sheath 4, and the sixth vent groove 221 cooperates with the first portion 41 to define the first vent passage 10.
In another alternative implementation, a seventh vent groove is formed at a position of the first portion 41 of the coil sheath 4 opposite to the engaging lug 22, an eighth vent groove is formed at a position of the engaging lug 22 opposite to the seventh vent groove, and the seventh vent groove and the eighth vent groove cooperate to define the first vent passage 10.
When the air vent groove is formed at a portion of the first portion 41 of the coil sheath 4 opposite to the engaging lug 22, alternatively, a boss is formed on an outer wall of the first portion 41 of the coil sheath 4 opposite to the engaging lug 22, and the air vent groove is formed on the boss.
In order to extend the exhaust path and further reduce the risk of water flowing from the exhaust port into the interior of the liner 3 during a natural gas engine flushing or rain, in an alternative implementation, the second exhaust channel 20 extends along the circumference of the cavity on the coil sheath, and the first end of the second exhaust channel 20 communicates with the through hole 411 on the first portion 41 of the coil sheath 4 and the second end communicates with the first exhaust channel. For example, the central angle of the second exhaust passage 20 may be 270 °.
In an alternative implementation, the end of the first portion 41 of the coil sheath 4 remote from the second portion 42 cooperates with the body 21 of the ignition coil 2 to define a third exhaust passage 30, the third exhaust passage 30 communicating the first exhaust passage 10 and the second exhaust passage 20.
For example, when the sixth exhaust groove 221 is formed at a position where the lug 22 opposes the first portion 41 of the coil sheath 4, and the sixth exhaust groove 221 cooperates with the first portion 41 to define the first exhaust passage 10, a communication groove 301 may be formed on a surface of the lug 22 facing the first portion 41 of the coil sheath 4, and the communication groove 301 cooperates with the first portion 41 to define the third exhaust passage.
The natural gas engine provided by the embodiment comprises the ignition assembly.
The natural gas engine provided by the embodiment comprises the ignition assembly, wherein the ignition assembly comprises a cylinder head cover 1, a lining 3 arranged in a mounting hole of the cylinder head cover 1, a coil sheath 4 inserted in the lining 3 and an ignition coil 2 arranged on the cylinder head cover 1 and matched with a first part 41 of the coil sheath 4 in a sealing way, and a second part 42 of the coil sheath 4 is inserted in the lining 3 and has a gap with the lining 3. The first portion 41 of the coil sheath 4 cooperates with the engaging lug 22 to define the first exhaust passage 10 in the axial direction of the coil sheath 4, and a through hole 411 is formed in the first portion 41 of the coil sheath 4 to penetrate the first portion 41 in the axial direction of the coil sheath 4, the through hole 411 being capable of communicating with a gap between the second portion 42 of the coil sheath 4 and the bush 3; one end of the first part 41 of the coil sheath 4, which is far away from the second part 42, is hermetically connected with the body 21 of the ignition coil 2 and is matched with the body 21 of the ignition coil 2 to define a second exhaust passage 20, the through hole 411 on the first part 41 of the coil sheath 4 and the first exhaust passage 10 are both communicated with the second exhaust passage 20, the through hole 411 can be communicated with a gap between the second part 42 of the coil sheath 4 and the lining 3, one end of the first exhaust passage, which is far away from the second exhaust passage 20, can be communicated with the outside, so that a passage for exhausting air from the lining 3 to the outside is formed, the passage is led out from the lining 3, passes through the first part 41 of the coil sheath 4, then is folded back to the second part 42 of the coil sheath 4 by the connecting lug 22 and is finally communicated with the outside; bending at least twice, making the passageway of exhausting to the external world by bush 3 more tortuous, exhaust route longer, thereby, can reduce or even avoid the natural gas engine to wash or when drenching with rain, the risk that water flows into inside bush 3 by this gas vent has also had dirt-proof effect concurrently.
Furthermore, the end of the first portion 41 of the coil sheath 4 away from the second portion 42 is sealingly connected to the body 21 of the ignition coil 2 (e.g., the coil sheath 4 has a certain elasticity, and after the ignition coil 2 is mounted to the coil sheath 4, the coil sheath 4 is compressed to form a sealing surface with the ignition coil 2), so that the risk of water entering from the top of the coil sheath 4 can be reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An ignition assembly comprising a cylinder head cover, an ignition coil, a bushing, and a coil boot, wherein:
the cylinder head cover is provided with a mounting hole, and the lining is arranged in the mounting hole;
the coil sheath comprises a first part and a second part which is coaxial with and fixedly connected with the first part, the diameter of the first part is larger than that of the second part, and a cavity which is through along the axis direction of the coil sheath is formed on the coil sheath; the second part is inserted in the bushing and has a gap with the bushing;
the ignition coil comprises a body opposite to the cylinder head cover and a connecting lug arranged on one side of the body facing the cylinder head cover, and the ignition coil is arranged on the cylinder head cover through the connecting lug;
the first portion and the connecting lug cooperate to define a first exhaust channel along the axial direction of the coil sheath; a through hole penetrating the first portion in an axial direction of the coil sheath is formed in the first portion, and the through hole communicates with a gap between the second portion of the coil sheath and the bushing; one end of the first part, which is far away from the second part, is hermetically connected with the body and is matched with the body to define a second exhaust channel; the through-hole with first exhaust passage all with second exhaust passage intercommunication, just first exhaust passage keeps away from the one end of second exhaust passage can communicate with the external world.
2. The ignition assembly of claim 1, wherein an end of the first portion distal from the second portion is formed with a first exhaust groove that cooperates with the body to define the second exhaust passage.
3. The ignition assembly of claim 1, wherein a face of the body facing the first portion is formed with a second exhaust groove that cooperates with the first portion to define the second exhaust passage.
4. The ignition assembly of claim 1, wherein an end of the first portion remote from the second portion defines a third exhaust channel, and a face of the body facing the first portion defines a fourth exhaust channel, the third exhaust channel and the fourth exhaust channel cooperating to define the second exhaust passage.
5. The ignition assembly of claim 1, wherein a fifth exhaust groove is formed in the first portion opposite the tab, the fifth exhaust groove cooperating with the tab to define the first exhaust passage.
6. The ignition assembly of claim 1, wherein a sixth exhaust groove is formed in a portion of the tab opposite the first portion, the sixth exhaust groove cooperating with the first portion to define the first exhaust passage.
7. The ignition assembly of claim 1, wherein a seventh vent slot is formed in a portion of the first portion opposite the tab, and an eighth vent slot is formed in a portion of the tab opposite the seventh vent slot, the seventh vent slot and the eighth vent slot cooperating to define the first vent passage.
8. The ignition assembly of any one of claims 1-7, wherein the second exhaust passage extends circumferentially of the cavity, and a first end of the second exhaust passage communicates with the through-hole and a second end of the second exhaust passage communicates with the first exhaust passage.
9. The ignition assembly of claim 8, wherein the second exhaust passage has a central angle of 270 °.
10. A natural gas engine comprising an ignition assembly as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122216757.2U CN216157802U (en) | 2021-09-13 | 2021-09-13 | Ignition assembly and natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122216757.2U CN216157802U (en) | 2021-09-13 | 2021-09-13 | Ignition assembly and natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216157802U true CN216157802U (en) | 2022-04-01 |
Family
ID=80849392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122216757.2U Active CN216157802U (en) | 2021-09-13 | 2021-09-13 | Ignition assembly and natural gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216157802U (en) |
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2021
- 2021-09-13 CN CN202122216757.2U patent/CN216157802U/en active Active
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