CN112145331A - Spark plug sheath integrated with pre-combustion chamber - Google Patents
Spark plug sheath integrated with pre-combustion chamber Download PDFInfo
- Publication number
- CN112145331A CN112145331A CN202011188394.XA CN202011188394A CN112145331A CN 112145331 A CN112145331 A CN 112145331A CN 202011188394 A CN202011188394 A CN 202011188394A CN 112145331 A CN112145331 A CN 112145331A
- Authority
- CN
- China
- Prior art keywords
- spark plug
- combustion chamber
- sheath body
- sheath
- boot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The invention discloses a spark plug sheath integrated with a pre-combustion chamber, belongs to the field of spark plug sheaths and solves the problem that the traditional spark plug is poor in ignition effect. This spark plug sheath is including the sheath body that is used for installing the spark plug, the sheath body install on the engine cylinder head, spark plug bottom and the inner chamber bottom of sheath body between be formed with the precombustion chamber, just sheath body bottom center be equipped with the central jet orifice with the precombustion chamber intercommunication, the peripheral sheath body lateral wall of central jet orifice is equipped with a plurality of side jet orifices with the precombustion chamber intercommunication. The spark plug sheath of the integrated precombustion chamber can improve the volume of the combustion chamber, has strong flame penetration capability and accelerates the combustion speed.
Description
Technical Field
The present invention relates to spark plug sheaths, and more particularly, to a spark plug sheath incorporating a pre-combustion chamber.
Background
With the emphasis of the country on environmental protection, the large-cylinder-diameter gas engine has wide application market prospect in the land power generation field and the ship field, the large-cylinder-diameter gas engine has a large amount of applications in the fields of methane power generation, oil field associated gas, natural gas stations and the like at present, the laminar combustion speed based on methane as a main fuel is slower, the combustion flame is spread farther in a combustion chamber after the cylinder diameter of the gas engine is increased, incomplete combustion exists in the combustion chamber, and the conditions of emission and economy of the large-cylinder-diameter gas engine are not facilitated, the passive pre-combustion chamber spark plug and the active pre-combustion chamber which solve the problem of rapid combustion through ignition are provided at present, one pre-combustion chamber is added at the head part of the common spark plug of the passive pre-combustion chamber spark plug, but the passive pre-combustion chamber spark plug has small volume, relatively weak flame penetration capacity and high cost, the mixing ratio of air and gas cannot be too high, the performance is improved better than ordinary ignition, and there is little and the cost is higher in the performance promotion, and initiative precombustion chamber redesigns precombustion chamber on replacing former spark plug sheath basis, has initiative air feed nozzle, precombustion chamber, spark plug in the initiative precombustion chamber, and the initiative precombustion chamber can promote combustion speed fast, and the performance promotion is showing, but the design degree of difficulty is big, and the cost is more expensive, and the maintenance cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and aims to provide a spark plug sheath integrated with a pre-combustion chamber, which can improve the volume of the combustion chamber, has strong flame penetration capability and accelerates the combustion speed.
The technical scheme of the invention is as follows: the utility model provides an integrated precombustion chamber's spark plug sheath, is including the sheath body that is used for installing the spark plug, the sheath body install on the engine cylinder lid, spark plug bottom and the inner chamber bottom of sheath body between be formed with the precombustion chamber, just sheath body bottom center be equipped with the central jet orifice with the precombustion chamber intercommunication, the peripheral sheath body lateral wall of central jet orifice is equipped with a plurality of side jet orifices with the precombustion chamber intercommunication.
As a further improvement, the diameter of the central injection hole is 1 mm-6 mm.
Further, the diameter of the side injection hole is 1.2 mm-2.4 mm.
Furthermore, the side injection hole is an obliquely arranged injection hole, and the included angle between the axial lead of the side injection hole and the axial lead of the spark plug is 80-110 degrees.
Furthermore, the inner wall of the sheath body is provided with an inner limiting shoulder, and the supporting surface of the spark plug is lapped on the inner limiting shoulder.
Furthermore, the outer wall of the sheath body is provided with an outer limiting shoulder, and the outer limiting shoulder is lapped on a limiting surface of an engine cylinder cover.
Further, the distance from the outer limiting shoulder to the bottom surface of the sheath body is larger than the distance from the limiting surface to the bottom surface of the engine cylinder cover.
Further, the difference value between the distance from the outer limiting shoulder to the bottom surface of the sheath body and the distance from the limiting surface to the bottom surface of the engine cylinder cover is 5-20 mm.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
according to the spark plug sheath with the integrated pre-combustion chamber, the pre-combustion chamber is integrated in the sheath body below the spark plug, the jet holes are formed in the center and the side face of the bottom of the sheath body respectively, when mixed gas enters an engine cylinder, the pre-combustion chamber on the spark plug sheath synchronously finishes mixed gas inlet, after the engine finishes gas inlet, the spark plug ignites in the pre-combustion chamber, the mixed gas in the pre-combustion chamber is ignited to generate high-temperature and high-pressure flame, and the flame is ejected out at a high speed through the central jet hole and the side jet holes to form a large-range combustion area, so that the volume of the combustion chamber can be increased, the flame penetration capability is high, and the combustion.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention.
Wherein: the spark plug comprises a spark plug 1, a sheath body 2, an engine cylinder cover 3, a pre-combustion chamber 4, a central jet hole 5, a lateral jet hole 6, an inner limiting shoulder 7, a support surface 8, an outer limiting shoulder 9 and a limiting surface 10.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-3, the spark plug jacket integrating the pre-combustion chamber comprises a jacket body 2 for mounting a spark plug 1, wherein the lower part of the spark plug 1 is in threaded connection with the jacket body 2, the jacket body 2 is mounted on an engine cylinder head 3, the pre-combustion chamber 4 is formed between the bottom of the spark plug 1 and the bottom of an inner cavity of the jacket body 2, a central jet hole 5 communicated with the pre-combustion chamber 4 is formed in the center of the bottom of the jacket body 2, a plurality of side jet holes 6 communicated with the pre-combustion chamber 4 are formed in the side wall of the jacket body 2 on the periphery of the central jet hole 5, the number of the side jet holes 6 is 4-12, and the side jet holes are uniformly distributed in the side wall of the jacket body.
According to the spark plug jacket with the integrated pre-combustion chamber, the pre-combustion chamber 4 is integrated in the jacket body 2 below the spark plug 1, the jet holes are formed in the center and the side face of the bottom of the jacket body 2 respectively, when mixed gas enters an engine cylinder, the pre-combustion chamber 4 on the spark plug jacket synchronously finishes feeding the mixed gas, after the air feeding of the engine is finished, the spark plug 1 ignites in the pre-combustion chamber 4, the mixed gas in the pre-combustion chamber 4 is ignited to generate high-temperature and high-pressure flame, and the flame is sprayed out at a high speed through the central jet hole 5 and the side jet holes 6 to form a large-range combustion area, so that the volume of the combustion chamber can be improved, the flame penetration capability is high.
Preferably, the diameter of the central injection hole 5 is 1 mm-6 mm, and the diameter of the side injection hole 6 is 1.2 mm-2.4 mm, so that the penetration effect of the injection flame and the ventilation effect in the combustion chamber are ensured, and the combustion is smoother and more efficient.
Preferably, the side injection hole 6 is an obliquely arranged injection hole, and an included angle between an axial lead of the side injection hole 6 and an axial lead of the spark plug 1 is 80-110 degrees, so that the injected flame is prevented from burning the surface of the piston, and the combustion speed can be accelerated.
Preferably, an inner limiting shoulder 7 is provided on the inner wall of the jacket body 2, wherein the support surface 8 of the spark plug 1 overlaps the inner limiting shoulder 7 and serves to position the spark plug 1.
Preferably, an outer limiting shoulder 9 is arranged on the outer wall of the sheath body 2, and the outer limiting shoulder 9 is lapped on a limiting surface 10 of the engine cylinder head 3 to play a role in positioning the sheath body 2. Further, the distance from the outer limiting shoulder 9 to the bottom surface of the sheath body 2 is greater than the distance from the limiting surface 10 to the bottom surface of the engine cylinder head 3, so that the central injection hole 5 and the side injection hole 6 at the bottom of the sheath body 2 are exposed in the combustion chamber below the engine cylinder head 3, specifically, the difference between the distance from the outer limiting shoulder 9 to the bottom surface of the sheath body 2 and the distance from the limiting surface 10 to the bottom surface of the engine cylinder head 3 is 5-20 mm, and the sprayed flame can enter the combustion chamber and can be rapidly combusted.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the invention, which will not affect the effect of the invention and the practicability of the patent.
Claims (8)
1. The utility model provides an integrated precombustion chamber's spark plug sheath, is including sheath body (2) that are used for installing spark plug (1), sheath body (2) install on engine cylinder cap (3), its characterized in that, spark plug (1) bottom and the inner chamber bottom of sheath body (2) between be formed with precombustion chamber (4), just sheath body (2) bottom center be equipped with central jet orifice (5) with precombustion chamber (4) intercommunication, the peripheral sheath body (2) lateral wall of central jet orifice (5) is equipped with a plurality of side jet orifices (6) with precombustion chamber (4) intercommunication.
2. An integrated pre-combustion chamber spark plug boot as claimed in claim 1, characterized in that the diameter of the central injection hole (5) is 1mm to 6 mm.
3. An integrated pre-combustion chamber spark plug boot as claimed in claim 1, characterized in that the side injection holes (6) have a diameter of 1.2mm to 2.4 mm.
4. An integrated pre-combustion chamber spark plug boot as claimed in claim 1, characterized in that the side injection holes (6) are obliquely arranged injection holes, and the angle between the axial line of the side injection holes (6) and the axial line of the spark plug (1) is 80 ° to 110 °.
5. An integrated pre-combustion chamber spark plug boot as claimed in claim 1, characterized in that the inner wall of the boot body (2) is provided with an inner limit shoulder (7), and the support surface (8) of the spark plug (1) overlaps the inner limit shoulder (7).
6. An integrated pre-combustion chamber spark plug boot as claimed in any of claims 1-5, characterized in that the outer wall of the boot body (2) is provided with an outer limit shoulder (9), and the outer limit shoulder (9) is lapped on a limit surface (10) of the engine cylinder head (3).
7. An integrated pre-combustion chamber spark plug boot as claimed in claim 6, characterized in that the distance of the outer limit shoulder (9) to the bottom surface of the boot body (2) is greater than the distance of the limit surface (10) to the bottom surface of the engine cylinder head (3).
8. An integrated pre-combustion chamber spark plug boot as claimed in claim 7, characterized in that the difference between the distance from the outer limit shoulder (9) to the bottom surface of the boot body (2) and the distance from the limit surface (10) to the bottom surface of the engine head (3) is 5mm to 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188394.XA CN112145331A (en) | 2020-10-30 | 2020-10-30 | Spark plug sheath integrated with pre-combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188394.XA CN112145331A (en) | 2020-10-30 | 2020-10-30 | Spark plug sheath integrated with pre-combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112145331A true CN112145331A (en) | 2020-12-29 |
Family
ID=73953713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011188394.XA Pending CN112145331A (en) | 2020-10-30 | 2020-10-30 | Spark plug sheath integrated with pre-combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112145331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135417A (en) * | 2021-11-22 | 2022-03-04 | 潍柴动力股份有限公司 | Cylinder cap, engine and vehicle |
| CN115263527A (en) * | 2022-07-07 | 2022-11-01 | 广西玉柴机器股份有限公司 | Ignition device with active intake prechamber |
-
2020
- 2020-10-30 CN CN202011188394.XA patent/CN112145331A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135417A (en) * | 2021-11-22 | 2022-03-04 | 潍柴动力股份有限公司 | Cylinder cap, engine and vehicle |
| CN115263527A (en) * | 2022-07-07 | 2022-11-01 | 广西玉柴机器股份有限公司 | Ignition device with active intake prechamber |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Effective date of registration: 20230109 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Applicant after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Applicant before: Guangxi Yuchai Machinery Co.,Ltd. |