CN108035818B - Cylinder head for a prechamber spark plug - Google Patents
Cylinder head for a prechamber spark plug Download PDFInfo
- Publication number
- CN108035818B CN108035818B CN201711147653.2A CN201711147653A CN108035818B CN 108035818 B CN108035818 B CN 108035818B CN 201711147653 A CN201711147653 A CN 201711147653A CN 108035818 B CN108035818 B CN 108035818B
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- Prior art keywords
- spark plug
- water
- cylinder cover
- water cavity
- hole
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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
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/12—Engines characterised by precombustion chambers with positive ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or injectors
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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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention belongs to the technical field of engines, and relates to a cylinder cover of a spark plug with a precombustion chamber, which comprises a cylinder cover body, wherein an air inlet channel and an air exhaust channel are distributed in the cylinder cover body; this internal cooling water cavity that forms of cylinder cap, baffle divide into upper water cavity and lower water cavity with the cooling water cavity, and during the precombustion chamber stretched into lower water cavity, the spark plug overlaps and is equipped with the fifth water hole, is equipped with the sixth water hole in the upper water cavity of intercommunication on the cylinder cap body, and fifth water hole upper end intercommunication sixth water hole, the lower water cavity of fifth water hole lower extreme intercommunication. The flow field of the cylinder cover water channel is optimized by the cylinder cover, the structure of the pre-combustion chamber spark plug is used, the cooling water channels of the spark plug and the pre-combustion chamber are added, the problem that the cylinder cover spark plug is insufficiently cooled is solved, the service life of the spark plug is prolonged, and the use cost of an engine is reduced.
Description
Technical Field
The invention belongs to the technical field of engines, and relates to a cylinder cover of a spark plug of a precombustion chamber.
Background
The existing gas engine is ignited by adopting a spark plug, the spark plug is arranged close to the bottom surface of a cylinder cover and is subjected to high temperature and high pressure during the operation of the gas engine, so that a larger heat load is generated on the spark plug, and the traditional cylinder cover cooling water channel cannot effectively reduce the heat load around the spark plug, so that the service life of the spark plug is shortened, and the use cost of the gas engine is increased.
Disclosure of Invention
Aiming at the problems, the invention provides the cylinder cover of the pre-combustion chamber spark plug, which optimizes the flow field of the water channel of the cylinder cover, uses the structure of the pre-combustion chamber spark plug, increases the passages of the cooling water of the spark plug and the pre-combustion chamber, solves the problem of insufficient cooling of the cylinder cover spark plug, prolongs the service life of the spark plug and reduces the use cost of an engine.
According to the technical scheme of the invention: the utility model provides a cylinder head of precombustion chamber spark plug, includes the cylinder cap body, and the internal intake duct, the exhaust passage of distributing of cylinder cap, its characterized in that: a spark plug sleeve is arranged in the mounting hole of the cylinder cover body, and a pre-combustion chamber is arranged on the cylinder cover body corresponding to the bottom surface of the spark plug sleeve; a cooling water cavity is formed in the cylinder cover body, the cooling water cavity is divided into an upper water cavity and a lower water cavity by a partition plate, the precombustion chamber extends into the lower water cavity, a fifth water hole is formed in the spark plug sleeve, a sixth water hole communicated with the upper water cavity is formed in the cylinder cover body, the upper end of the fifth water hole is communicated with the sixth water hole, the lower end of the fifth water hole is communicated with the lower water cavity, and a first water hole communicated with the upper water cavity and the lower water cavity is formed in the partition plate; the bottom surface of the cylinder cover body is provided with a plurality of water inlet holes communicated with the lower water cavity, and the top of the cylinder cover body is provided with a water outlet communicated with the upper water cavity.
As a further improvement of the invention, a first spark plug sleeve sealing ring is arranged between the lower end of the spark plug sleeve and the cylinder cover body, a second spark plug sealing ring and a third spark plug sealing ring are also arranged between the spark plug sleeve and the cylinder cover body, and the second spark plug sealing ring and the third spark plug sealing ring are respectively arranged on two sides of the communication position of the fifth water hole and the sixth water hole.
As a further improvement of the invention, a precombustion chamber sealing ring is arranged between the precombustion chamber and the spark plug sleeve, and a precombustion chamber gasket is arranged between the lower end step surface of the precombustion chamber and the cylinder cover body.
As a further improvement of the invention, the spark plug sleeve is fixed on the cylinder cover body through a pressing block and a bolt.
As a further improvement of the invention, the water inlets comprise a first water inlet, a second water inlet, a third water inlet, a fourth water inlet, a fifth water inlet and a sixth water inlet, wherein the first water inlet and the second water inlet are arranged at the lower side of the exhaust passage, the third water inlet and the fourth water inlet are arranged at the positions, close to the two sides of the two exhaust valves, on the cylinder cover body, and the fifth water inlet and the sixth water inlet are arranged at the lower side of the air inlet passage.
As a further improvement of the invention, a first hole and a second hole are arranged on an air inlet baffle plate connected with the exhaust passage in the lower water cavity.
As a further improvement of the invention, a second water hole and a third water hole are arranged between the lower water cavity and the upper water cavity of the exhaust outlet of the cylinder cover body.
As a further improvement of the invention, the lower water cavity is connected with the upper water cavity through a first communicating water hole and a second communicating water hole.
As a further improvement of the invention, the lower water cavity is provided with a first water hole and a fourth water hole outside the air inlet valve hole.
The invention has the technical effects that: according to the invention, the scoring layer water cavity is arranged in the cylinder cover water cavity, 6 fixed point water inlet holes are arranged at the bottom of the cylinder cover, the communicating water holes of the lower layer water cavity and the upper layer water cavity are designed, the cooling water hole of the spark plug sleeve is communicated with the lower layer water cavity and the upper layer water cavity, and the installation design of the pre-combustion chamber and the spark plug sleeve ensures that the cooling water of the lower layer water cavity of the cylinder cover cools the outer surface of the pre-combustion chamber as much as possible, flows to the upper layer water cavity through the water hole on the spark plug sleeve, fully cools the high-temperature area at the head part of the spark plug, optimizes the flow field of a water channel of the cylinder cover, solves the problem of insufficient cooling of the spark plug of the cylinder.
Drawings
FIG. 1 is a schematic view of the planing surface structure of the cylinder head of the present invention.
FIG. 2 is a top plan view of the cylinder head lower deck water chamber of the present invention.
FIG. 3 is a top view of the upper water chamber of the cylinder head of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In fig. 1 to 3, the exhaust passage includes an exhaust passage 1, an intake passage 2, a lower water cavity 3, a partition plate 4, a prechamber gasket 5, a prechamber 6, a prechamber seal ring 7, a first plug bush seal ring 8, a first water hole 9, a fifth water hole 10, a sixth water hole 11, a plug bush 12, a second plug bush seal ring 13, a press block 14, a plug 15, a bolt 16, an upper water cavity 17, a water outlet 18, a third plug bush seal ring 19, a first water inlet hole 20, a second water inlet hole 21, a third water inlet hole 22, a fourth water inlet hole 23, a fifth water inlet hole 24, a sixth water inlet hole 25, a second water hole 26, a third water hole 27, a first hole 28, a second hole 29, a first communicating water hole 30, a second communicating water hole 31, a fourth water hole 32, and the like.
As shown in fig. 1 to 3, the invention relates to a cylinder head of a pre-combustion chamber spark plug, which comprises a cylinder head body, wherein an air inlet passage 2 and an air exhaust passage 1 are distributed in the cylinder head body, a spark plug sleeve 12 is arranged in a mounting hole of the cylinder head body, and a pre-combustion chamber 6 is arranged on the cylinder head body corresponding to the bottom surface of the spark plug sleeve 12; a cooling water cavity is formed in the cylinder cover body, the cooling water cavity is divided into an upper water cavity 17 and a lower water cavity 3 by a partition plate 4, a precombustion chamber 6 extends into the lower water cavity 3, a fifth water hole 10 is formed in a spark plug sleeve 12, a sixth water hole 11 communicated with the upper water cavity 17 is formed in the cylinder cover body, the upper end of the fifth water hole 10 is communicated with the sixth water hole 11, the lower end of the fifth water hole 10 is communicated with the lower water cavity 3, and a first water hole 9 communicated with the upper water cavity 17 and the lower water cavity 3 is formed in the partition plate 4; the bottom surface of the cylinder cover body is provided with a plurality of water inlet holes communicated with the lower water cavity 3, and the top of the cylinder cover body is provided with a water outlet 18 communicated with the upper water cavity 17.
A first spark plug sleeve sealing ring 8 is arranged between the lower end of a spark plug sleeve 12 and a cylinder cover body, a second spark plug sealing ring 13 and a third spark plug sealing ring 19 are further arranged between the spark plug sleeve 12 and the cylinder cover body, and the second spark plug sealing ring 13 and the third spark plug sealing ring 19 are respectively arranged on two sides of the communication position of a fifth water hole 10 and a sixth water hole 11.
A precombustion chamber sealing ring 7 is arranged between the precombustion chamber 6 and the spark plug sleeve 12, and a precombustion chamber gasket 5 is arranged between the step surface at the lower end of the precombustion chamber 6 and the cylinder cover body.
The plug cover 12 is fixed to the cylinder head body by a pressing block 14 and a bolt 16.
The inlet opening includes first inlet opening 20, second inlet opening 21, third inlet opening 22, fourth inlet opening 23, fifth inlet opening 24, sixth inlet opening 25, and wherein first inlet opening 20, second inlet opening 21 set up in exhaust passage 1 downside, and third inlet opening 22, fourth inlet opening 23 set up on the cylinder cap body and are close to two exhaust valve both sides positions, and fifth inlet opening 24, sixth inlet opening 25 set up in 2 downside in intake duct.
The inlet baffle plate connected with the exhaust passage in the lower water cavity 3 is provided with a first hole 28 and a second hole 29.
A second water hole 26 and a third water hole 27 are formed between the lower water cavity 3 and the upper water cavity 17 of the exhaust outlet of the cylinder cover body.
The lower water cavity 3 is connected with the upper water cavity 17 through a first communicating water hole 30 and a second communicating water hole 31.
The lower water cavity 3 is provided with a first water hole 9 and a fourth water hole 32 outside the air inlet valve hole.
The working process of the invention is as follows: the cylinder cover cooling water enters the cylinder cover lower water cavity 3 from 6 water inlets respectively, the cooling water flowing in from the first water inlet 20 and the second water inlet 21 flows into the first communicating water hole 30 and the second communicating water hole 31 to flow into the upper water cavity 17 through the periphery of the exhaust passage and the bridge area of the bridge of the cylinder cover nose, and part of the cooling water flows into the upper water cavity 17 through the second water hole 26 and the third water hole 27; the cooling water flowing in from the third water inlet hole 22 and the fourth water inlet hole 23 flows into the first communicating water hole 30 and the second communicating water hole 31 through the periphery of the exhaust passage and the bridge area of the cylinder head nose, and then flows into the upper water cavity 17; the cooling water flowing in from the fifth water inlet hole 24 and the sixth water inlet hole 25 flows into the first communicating water hole 30 and the second communicating water hole 31 to flow into the upper water cavity 17 through the periphery of the air inlet and the nose bridge area of the cylinder cover, part of the cooling water flows into the first hole 28 and the second hole 29 to flow into the upper water cavity 17 through the fourth water inlet hole 23 and the fifth water inlet hole 24, and part of the cooling water flows into the upper water cavity 17 through the first water hole 9 and the fourth water hole 32. The cooling water that flows through cylinder head nose bridge district cools off precombustion chamber 6 surface, and partial cooling water passes through fifth water hole 10 on spark plug cover 12 and flows into upper water cavity 17, and the cooling water joins at upper water cavity 17 and flows out the cylinder head water cavity through cooling water outlet 18.
The design of the layered water cavity and the pre-combustion chamber spark plug structure enables the cylinder cover cooling water to cool the bottom of the cylinder cover in the cylinder cover as much as possible, the cooling water converging the lower-layer water cavity passes through the high-temperature area of the nose bridge, the cooling water of the lower-layer water cavity of the cylinder cover cools the outer surface of the pre-combustion chamber as much as possible, the cooling water flows to the upper-layer water cavity through the water holes in the spark plug sleeve, the head high-temperature area of the spark plug is fully cooled, the flow field of a water channel of the cylinder cover is optimized, the problem that the spark plug of the cylinder cover is insufficiently cooled is solved, the service life of the spark.
Claims (6)
1. A cylinder cover of a pre-combustion chamber spark plug comprises a cylinder cover body, wherein an air inlet channel (2) and an air exhaust channel (1) are distributed in the cylinder cover body, a cooling water cavity is formed in the cylinder cover body, the cooling water cavity is divided into an upper water cavity (17) and a lower water cavity (3) by a partition plate (4), a pre-combustion chamber (6) extends into the lower water cavity (3), a sixth water hole (11) communicated with the upper water cavity (17) is formed in the cylinder cover body, the lower end of a fifth water hole (10) is communicated with the lower water cavity (3), and a first water hole (9) communicated with the upper water cavity (17) and the lower water cavity (3) is formed in the partition plate (4;
the method is characterized in that: a spark plug sleeve (12) is arranged in a mounting hole of the cylinder cover body, and a precombustion chamber (6) is arranged on the cylinder cover body corresponding to the bottom surface of the spark plug sleeve (12); a fifth water hole (10) is formed in the spark plug sleeve (12), the upper end of the fifth water hole (10) is communicated with a sixth water hole (11), a plurality of water inlet holes communicated with the lower water cavity (3) are formed in the bottom surface of the cylinder cover body, and a water outlet (18) communicated with the upper water cavity (17) is formed in the top of the cylinder cover body;
a first spark plug sleeve sealing ring (8) is arranged between the lower end of the spark plug sleeve (12) and the cylinder cover body, a second spark plug sealing ring (13) and a third spark plug sealing ring (19) are further arranged between the spark plug sleeve (12) and the cylinder cover body, and the second spark plug sealing ring (13) and the third spark plug sealing ring (19) are respectively arranged on two sides of a communication position of the fifth water hole (10) and the sixth water hole (11);
a pre-combustion chamber sealing ring (7) is arranged between the pre-combustion chamber (6) and the spark plug sleeve (12), and a pre-combustion chamber gasket (5) is arranged between the step surface at the lower end of the pre-combustion chamber (6) and the cylinder cover body;
the intake opening includes first intake opening (20), second intake opening (21), third intake opening (22), fourth intake opening (23), fifth intake opening (24), sixth intake opening (25), and wherein first intake opening (20), second intake opening (21) set up in exhaust passage (1) downside, and third intake opening (22), fourth intake opening (23) set up on the cylinder cap body and are close to two exhaust valve both sides positions, and fifth intake opening (24), sixth intake opening (25) set up in intake duct (2) downside.
2. The cylinder head for a pre-chamber spark plug of claim 1, wherein: the spark plug sleeve (12) is fixed on the cylinder cover body through a pressing block (14) and a bolt (16).
3. The cylinder head for a pre-chamber spark plug of claim 1, wherein: a first hole (28) and a second hole (29) are formed in the air inlet baffle plate connected with the exhaust passage in the lower water cavity (3).
4. The cylinder head for a pre-chamber spark plug of claim 1, wherein: a second water hole (26) and a third water hole (27) are formed between the lower water cavity (3) and the upper water cavity (17) of the exhaust outlet of the cylinder cover body.
5. The cylinder head for a pre-chamber spark plug of claim 1, wherein: the lower water cavity (3) is connected with the upper water cavity (17) through a first communicating water hole (30) and a second communicating water hole (31).
6. The cylinder head for a pre-chamber spark plug of claim 1, wherein: and a first water hole (9) and a fourth water hole (32) are formed in the lower water cavity (3) and are arranged on the outer side of the air inlet valve hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711147653.2A CN108035818B (en) | 2017-11-17 | 2017-11-17 | Cylinder head for a prechamber spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711147653.2A CN108035818B (en) | 2017-11-17 | 2017-11-17 | Cylinder head for a prechamber spark plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035818A CN108035818A (en) | 2018-05-15 |
| CN108035818B true CN108035818B (en) | 2021-02-05 |
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ID=62092789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711147653.2A Active CN108035818B (en) | 2017-11-17 | 2017-11-17 | Cylinder head for a prechamber spark plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035818B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854403B (en) * | 2018-12-21 | 2020-08-21 | 潍柴动力股份有限公司 | Cylinder head and engine with same |
| CN111075591B (en) * | 2020-01-09 | 2022-03-04 | 中国重汽集团济南动力有限公司 | Cylinder cover water cavity assembly with bushing |
| CN113969825B (en) * | 2020-07-23 | 2022-12-20 | 广州汽车集团股份有限公司 | Split type precombustion chamber |
| CN112502847A (en) * | 2020-11-27 | 2021-03-16 | 潍柴动力股份有限公司 | Engine cylinder cover and natural gas engine |
| CN115013141A (en) * | 2022-06-15 | 2022-09-06 | 一汽解放汽车有限公司 | Pre-combustion chamber structure and gas internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1118653B (en) * | 1979-05-23 | 1986-03-03 | Fiat Veicoli Ind | CYLINDER HEAD FOR IGNITION ENGINES FOR COMBUSTION PRE-CHAMBER TYPE |
| CN201496140U (en) * | 2009-06-25 | 2010-06-02 | 南车资阳机车有限公司 | Active differential-type pre-combustion system |
| AT514813B1 (en) * | 2013-09-25 | 2015-04-15 | Ge Jenbacher Gmbh & Co Og | Arrangement of a cylinder head and a Vorkammersystem |
| CN106870117B (en) * | 2017-01-23 | 2019-06-04 | 江苏盛源燃气动力机械有限公司 | Water-cooled pre-burning device |
| CN107061045A (en) * | 2017-01-25 | 2017-08-18 | 无锡开普机械有限公司 | The sealing structure of spark plug |
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2017
- 2017-11-17 CN CN201711147653.2A patent/CN108035818B/en active Active
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| Publication number | Publication date |
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| CN108035818A (en) | 2018-05-15 |
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