CN108035818A - The cylinder head of pre-chamber spark plug - Google Patents
The cylinder head of pre-chamber spark plug Download PDFInfo
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- CN108035818A CN108035818A CN201711147653.2A CN201711147653A CN108035818A CN 108035818 A CN108035818 A CN 108035818A CN 201711147653 A CN201711147653 A CN 201711147653A CN 108035818 A CN108035818 A CN 108035818A
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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
本发明属于发动机技术领域，涉及一种预燃室火花塞的气缸盖，包括缸盖本体，缸盖本体内分布进气道、排气道，缸盖本体的安装孔中设置火花塞套，缸盖本体上对应于火花塞套的底面设置预燃室；缸盖本体内形成冷却水腔，隔板将冷却水腔分为上水腔和下水腔，预燃室伸入下水腔中，火花塞套上设有第五水孔，缸盖本体上设有连通上水腔的第六水孔，第五水孔上端连通第六水孔，第五水孔下端连通下水腔。该气缸盖优化了气缸盖水道的流场，使用了预燃室火花塞的结构，增加了火花塞、预燃室的冷却水的通道，解决了气缸盖火花塞冷却不充分的问题，以提高火花塞的使用寿命，降低了发动机的使用成本。
The invention belongs to the technical field of engines, and relates to a cylinder head of a spark plug in a pre-combustion chamber, comprising a cylinder head body, an air intake passage and an exhaust passage distributed in the cylinder head body, a spark plug sleeve arranged in a mounting hole of the cylinder head body, and a cylinder head body Corresponding to the bottom surface of the spark plug sleeve, a pre-combustion chamber is set on the top; a cooling water chamber is formed in the cylinder head body, and the partition plate divides the cooling water chamber into an upper water chamber and a lower water chamber, and the pre-combustion chamber extends into the lower water chamber. The fifth water hole, the cylinder head body is provided with a sixth water hole connected to the upper water chamber, the upper end of the fifth water hole is connected to the sixth water hole, and the lower end of the fifth water hole is connected to the lower water chamber. The cylinder head optimizes the flow field of the water channel of the cylinder head, uses the structure of the spark plug of the pre-combustion chamber, increases the passage of the cooling water of the spark plug and the pre-combustion chamber, solves the problem of insufficient cooling of the spark plug of the cylinder head, and improves the use of the spark plug service life and reduce the cost of using the engine.
Description
技术领域technical field
本发明属于发动机技术领域，涉及一种预燃室火花塞的气缸盖。The invention belongs to the technical field of engines and relates to a cylinder head of a pre-combustion chamber spark plug.
背景技术Background technique
现有燃气发动机采用火花塞点燃，火花塞安装靠近气缸盖底面，在燃气发动机工作中受到高温高压，对火花塞产生了比较大的热负荷，传统的气缸盖冷却水道不能有效的降低火花塞周围的热负荷，导致火花塞使用寿命降低，增加燃气发动机的使用成本。Existing gas engines are ignited by spark plugs. The spark plugs are installed close to the bottom of the cylinder head. During the operation of the gas engine, they are subjected to high temperature and high pressure, which produces a relatively large heat load on the spark plug. The traditional cooling water channel for the cylinder head cannot effectively reduce the heat load around the spark plug. This will reduce the service life of the spark plug and increase the cost of using the gas engine.
发明内容Contents of the invention
本发明针对上述问题，提供一种预燃室火花塞的气缸盖，该气缸盖优化了气缸盖水道的流场，使用了预燃室火花塞的结构，增加了火花塞、预燃室的冷却水的通道，解决了气缸盖火花塞冷却不充分的问题，以提高火花塞的使用寿命，降低了发动机的使用成本。In view of the above problems, the present invention provides a cylinder head of a pre-chamber spark plug, which optimizes the flow field of the cylinder head water channel, uses the structure of the pre-chamber spark plug, and increases the cooling water passage of the spark plug and the pre-chamber , to solve the problem of insufficient cooling of the spark plug of the cylinder head, so as to improve the service life of the spark plug and reduce the use cost of the engine.
按照本发明的技术方案：一种预燃室火花塞的气缸盖，包括缸盖本体，缸盖本体内分布进气道、排气道，其特征在于：缸盖本体的安装孔中设置火花塞套，缸盖本体上对应于火花塞套的底面设置预燃室；缸盖本体内形成冷却水腔，隔板将冷却水腔分为上水腔和下水腔，预燃室伸入下水腔中，火花塞套上设有第五水孔，缸盖本体上设有连通上水腔的第六水孔，第五水孔上端连通第六水孔，第五水孔下端连通下水腔，隔板上设有连通上水腔与下水腔的第一水孔；缸盖本体底面设有若干个连通下水腔的进水孔，缸盖本体顶部设有连通上水腔的出水口。According to the technical solution of the present invention: a cylinder head of a pre-combustion chamber spark plug, including a cylinder head body, an air intake passage and an exhaust passage are distributed in the cylinder head body, and it is characterized in that: a spark plug sleeve is arranged in the mounting hole of the cylinder head body, A pre-combustion chamber is set on the cylinder head body corresponding to the bottom surface of the spark plug sleeve; a cooling water chamber is formed in the cylinder head body, and the partition plate divides the cooling water chamber into an upper water chamber and a lower water chamber. The pre-combustion chamber extends into the lower water chamber, and the spark plug sleeve The fifth water hole is arranged on the top, the sixth water hole connected to the upper water chamber is arranged on the cylinder head body, the upper end of the fifth water hole is connected to the sixth water hole, the lower end of the fifth water hole is connected to the lower water chamber, and a communication hole is provided on the partition plate. The first water hole of the upper water chamber and the lower water chamber; the bottom surface of the cylinder head body is provided with several water inlet holes connected with the lower water chamber, and the top of the cylinder head body is provided with a water outlet connected with the upper water chamber.
作为本发明的进一步改进，所述火花塞套下端与缸盖本体之间设置第一火花塞套密封圈，火花塞套与缸盖本体之间还设置有第二火花塞密封圈和第三火花塞密封圈，第二火花塞密封圈、第三火花塞密封圈分置于第五水孔与第六水孔连通处的两侧。As a further improvement of the present invention, a first spark plug seal ring is provided between the lower end of the spark plug sleeve and the cylinder head body, and a second spark plug seal ring and a third spark plug seal ring are also provided between the spark plug sleeve and the cylinder head body. The second spark plug sealing ring and the third spark plug sealing ring are respectively arranged on both sides of the connection between the fifth water hole and the sixth water hole.
作为本发明的进一步改进，所述预燃室与火花塞套之间设有预燃室密封圈，预燃室下端台阶面与缸盖本体之间设置预燃室垫片。As a further improvement of the present invention, a pre-chamber sealing ring is provided between the pre-chamber and the spark plug sleeve, and a pre-chamber gasket is provided between the step surface at the lower end of the pre-chamber and the cylinder head body.
作为本发明的进一步改进，所述火花塞套通过压块、螺栓固定于缸盖本体上。As a further improvement of the present invention, the spark plug sleeve is fixed on the cylinder head body through a pressure block and a bolt.
作为本发明的进一步改进，所述进水孔包括第一进水孔、第二进水孔、第三进水孔、第四进水孔、第五进水孔、第六进水孔，其中第一进水孔、第二进水孔设置于排气道下侧，第三进水孔、第四进水孔设置于缸盖本体上靠近两个排气门两侧位置，第五进水孔、第六进水孔设置于进气道下侧。As a further improvement of the present invention, the water inlet includes 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 hole and the second water inlet hole are arranged on the lower side of the exhaust passage, the third water inlet hole and the fourth water inlet hole are arranged on the cylinder head body near the two sides of the exhaust valves, and the fifth water inlet hole The hole and the sixth water inlet hole are arranged on the lower side of the air inlet.
作为本发明的进一步改进，下水腔中与排气道相连的进气道隔板上设置第一孔、第二孔。As a further improvement of the present invention, a first hole and a second hole are provided on the air inlet partition connected to the exhaust channel in the lower water chamber.
作为本发明的进一步改进，缸盖本体排气出口的下水腔与上水腔之间设置第二水孔、第三水孔。As a further improvement of the present invention, a second water hole and a third water hole are provided between the lower water chamber and the upper water chamber of the exhaust outlet of the cylinder head body.
作为本发明的进一步改进，所述下水腔与上水腔之间还通过第一连通水孔、第二连通水孔相连。As a further improvement of the present invention, the lower water chamber and the upper water chamber are also connected through a first communicating water hole and a second communicating water hole.
作为本发明的进一步改进，所述下水腔在进气门孔外侧设置有第一水孔、第四水孔。As a further improvement of the present invention, the lower water chamber is provided with a first water hole and a fourth water hole outside the air intake valve hole.
本发明的技术效果在于：本发明通过在缸盖水腔内设计分层水腔，缸盖底部6个定点进水孔设计，下层水腔与上层水腔的连通水孔设计，火花塞套冷却水孔连通下层水腔与上层水腔设计，预燃室与火花塞套的安装设计，使缸盖下层水腔的冷却水尽可能的冷却预燃室的外表面，通过火花塞套上的水孔流向上层水腔，充分冷却火花塞头部高温区域，优化了缸盖水道的流场，解决了气缸盖火花塞冷却不充分的问题，以提高火花塞的使用寿命，降低了发动机的使用成本。The technical effects of the present invention are: the present invention designs layered water chambers in the water chamber of the cylinder head, designs 6 fixed-point water inlet holes at the bottom of the cylinder head, designs the connecting water holes between the lower water chamber and the upper water chamber, and the cooling water of the spark plug sleeve The design of the hole connecting the lower water chamber and the upper water chamber, the installation design of the pre-combustion chamber and the spark plug sleeve, so that the cooling water in the lower water chamber of the cylinder head cools the outer surface of the pre-combustion chamber as much as possible, and flows to the upper layer through the water hole on the spark plug sleeve The water cavity fully cools the high-temperature area of the spark plug head, optimizes the flow field of the water channel in the cylinder head, and solves the problem of insufficient cooling of the spark plug in the cylinder head, so as to improve the service life of the spark plug and reduce the use cost of the engine.
附图说明Description of drawings
图1为本发明的气缸盖刨面结构示意图。Fig. 1 is a schematic diagram of the plane structure of the cylinder head of the present invention.
图2为本发明的气缸盖下层水腔俯视图。Fig. 2 is a top view of the water chamber in the lower layer of the cylinder head of the present invention.
图3为本发明的气缸盖上层水腔俯视图。Fig. 3 is a top view of the upper water cavity of the cylinder head of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明的具体实施方式作进一步的说明。The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
图1~3中，包括排气道1、进气道2、下水腔3、隔板4、预燃室垫片5、预燃室6、预燃室密封圈7、第一火花塞套密封圈8、第一水孔9、第五水孔10、第六水孔11、火花塞套12、第二火花塞套密封圈13、压块14、火花塞15、螺栓16、上水腔17、出水口18、第三火花塞套密封圈19、第一进水孔20、第二进水孔21、第三进水孔22、第四进水孔23、第五进水孔24、第六进水孔25、第二水孔26、第三水孔27、第一孔28、第二孔29、第一连通水孔30、第二连通水孔31、第四水孔32等。In Figures 1 to 3, it includes exhaust duct 1, intake duct 2, water chamber 3, partition plate 4, pre-combustion chamber gasket 5, pre-combustion chamber 6, pre-combustion chamber sealing ring 7, and first spark plug sleeve sealing ring 8. The first water hole 9, the fifth water hole 10, the sixth water hole 11, the spark plug sleeve 12, the second spark plug sleeve sealing ring 13, the pressing block 14, the spark plug 15, the bolt 16, the upper water cavity 17, the water outlet 18 , The third spark plug sleeve sealing ring 19, the first water inlet 20, the second water inlet 21, the third water inlet 22, the fourth water inlet 23, the fifth water inlet 24, the sixth water inlet 25 , the second water hole 26, the third water hole 27, the first hole 28, the second hole 29, the first communicating water hole 30, the second communicating water hole 31, the fourth water hole 32, and the like.
如图1~3所示，本发明是一种预燃室火花塞的气缸盖，包括缸盖本体，缸盖本体内分布进气道2、排气道1，缸盖本体的安装孔中设置火花塞套12，缸盖本体上对应于火花塞套12的底面设置预燃室6；缸盖本体内形成冷却水腔，隔板4将冷却水腔分为上水腔17和下水腔3，预燃室6伸入下水腔3中，火花塞套12上设有第五水孔10，缸盖本体上设有连通上水腔17的第六水孔11，第五水孔10上端连通第六水孔11，第五水孔10下端连通下水腔3，隔板4上设有连通上水腔17与下水腔3的第一水孔9；缸盖本体底面设有若干个连通下水腔3的进水孔，缸盖本体顶部设有连通上水腔17的出水口18。As shown in Figures 1 to 3, the present invention is a cylinder head of a pre-combustion chamber spark plug, including a cylinder head body, an air intake passage 2 and an exhaust passage 1 are distributed in the cylinder head body, and a spark plug is arranged in the mounting hole of the cylinder head body Cover 12, a pre-combustion chamber 6 is set on the cylinder head body corresponding to the bottom surface of the spark plug sleeve 12; a cooling water chamber is formed in the cylinder head body, and the partition plate 4 divides the cooling water chamber into an upper water chamber 17 and a lower water chamber 3, and the pre-combustion chamber 6 extends into the lower water chamber 3, the spark plug sleeve 12 is provided with a fifth water hole 10, the cylinder head body is provided with a sixth water hole 11 connected to the upper water chamber 17, and the upper end of the fifth water hole 10 is connected to the sixth water hole 11 , the lower end of the fifth water hole 10 is connected to the lower water chamber 3, the first water hole 9 connecting the upper water chamber 17 and the lower water chamber 3 is provided on the partition plate 4; several water inlet holes connected to the lower water chamber 3 are provided on the bottom surface of the cylinder head , The top of the cylinder head body is provided with a water outlet 18 connected to the upper water chamber 17 .
火花塞套12下端与缸盖本体之间设置第一火花塞套密封圈8，火花塞套12与缸盖本体之间还设置有第二火花塞密封圈13和第三火花塞密封圈19，第二火花塞密封圈13、第三火花塞密封圈19分置于第五水孔10与第六水孔11连通处的两侧。A first spark plug seal ring 8 is arranged between the lower end of the spark plug sleeve 12 and the cylinder head body, a second spark plug seal ring 13 and a third spark plug seal ring 19 are also arranged between the spark plug sleeve 12 and the cylinder head body, and the second spark plug seal ring 13. The third spark plug sealing ring 19 is located on both sides of the connection between the fifth water hole 10 and the sixth water hole 11 .
预燃室6与火花塞套12之间设有预燃室密封圈7，预燃室6下端台阶面与缸盖本体之间设置预燃室垫片5。A pre-chamber sealing ring 7 is provided between the pre-chamber 6 and the spark plug sleeve 12, and a pre-chamber gasket 5 is provided between the step surface at the lower end of the pre-chamber 6 and the cylinder head body.
火花塞套12通过压块14、螺栓16固定于缸盖本体上。The spark plug sleeve 12 is fixed on the cylinder head body through a pressure block 14 and a bolt 16 .
进水孔包括第一进水孔20、第二进水孔21、第三进水孔22、第四进水孔23、第五进水孔24、第六进水孔25，其中第一进水孔20、第二进水孔21设置于排气道1下侧，第三进水孔22、第四进水孔23设置于缸盖本体上靠近两个排气门两侧位置，第五进水孔24、第六进水孔25设置于进气道2下侧。The water inlet comprises a first water inlet 20, a second water inlet 21, a third water inlet 22, a fourth water inlet 23, a fifth water inlet 24, and a sixth water inlet 25, wherein the first water inlet The water hole 20 and the second water inlet hole 21 are arranged on the lower side of the exhaust passage 1, the third water inlet hole 22 and the fourth water inlet hole 23 are arranged on the cylinder head body near the two sides of the exhaust valves, and the fifth The water inlet hole 24 and the sixth water inlet hole 25 are arranged on the lower side of the air inlet channel 2 .
下水腔3中与排气道相连的进气道隔板上设置第一孔28、第二孔29。A first hole 28 and a second hole 29 are arranged on the air intake divider connected with the exhaust channel in the lower water chamber 3 .
缸盖本体排气出口的下水腔3与上水腔17之间设置第二水孔26、第三水孔27。A second water hole 26 and a third water hole 27 are arranged between the lower water chamber 3 and the upper water chamber 17 of the exhaust outlet of the cylinder head body.
下水腔3与上水腔17之间还通过第一连通水孔30、第二连通水孔31相连。The lower water chamber 3 and the upper water chamber 17 are also connected through a first communicating water hole 30 and a second communicating water hole 31 .
下水腔3在进气门孔外侧设置有第一水孔9、第四水孔32。The lower water chamber 3 is provided with a first water hole 9 and a fourth water hole 32 outside the intake valve hole.
本发明的工作过程如下：缸盖冷却水分别从6个进水孔进入缸盖下水腔3，第一进水孔20、第二进水孔21流入的冷却水经过排气道周围、缸盖鼻梁区流进第一连通水孔30、第二连通水孔31流入上水腔17，有部分冷却水经第二水孔26、第三水孔27流入上水腔17；第三进水孔22、第四进水孔23流入的冷却水经过排气道周围、缸盖鼻梁区流进第一连通水孔30、第二连通水孔31，然后流入上水腔17；第五进水孔24、第六进水孔25流入的冷却水经过进气道周围、缸盖鼻梁区流进第一连通水孔30、第二连通水孔31流入上水腔17，有部分冷却水经过第四进水孔23、第五进水孔24流入第一孔28、第二孔29流入上水腔17，有部分冷却水经过第一水孔9、第四水孔32流入上水腔17。流经缸盖鼻梁区的冷却水冷却预燃室6外表面，部分冷却水通过火花塞套12上第五水孔10流入上水腔17，冷却水在上水腔17汇合经冷却水出口18流出缸盖水腔。The working process of the present invention is as follows: the cooling water of the cylinder head enters the lower water cavity 3 of the cylinder head from 6 water inlet holes respectively, and the cooling water flowing in from the first water inlet hole 20 and the second water inlet hole 21 passes around the exhaust passage, the cylinder head The bridge of the nose area flows into the first connecting water hole 30, the second connecting water hole 31 flows into the upper water chamber 17, and part of the cooling water flows into the upper water chamber 17 through the second water hole 26 and the third water hole 27; the third water inlet hole 22. The cooling water flowing in from the fourth water inlet hole 23 flows into the first communication water hole 30 and the second communication water hole 31 through the exhaust passage and the nose bridge area of the cylinder head, and then flows into the upper water chamber 17; the fifth water inlet hole 24. The cooling water flowing in from the sixth water inlet hole 25 flows into the first connecting water hole 30 and the second connecting water hole 31 through the surrounding air inlet and the nose bridge area of the cylinder head, and flows into the upper water chamber 17, and part of the cooling water flows through the fourth The water inlet hole 23 and the fifth water inlet hole 24 flow into the first hole 28 and the second hole 29 into the upper water cavity 17 , and some cooling water flows into the upper water cavity 17 through the first water hole 9 and the fourth water hole 32 . The cooling water flowing through the nose bridge area of the cylinder head cools the outer surface of the pre-combustion chamber 6, and part of the cooling water flows into the upper water chamber 17 through the fifth water hole 10 on the spark plug sleeve 12, and the cooling water flows out through the cooling water outlet 18 after converging in the upper water chamber 17 Cylinder head water cavity.
这种分层水腔和预燃室火花塞结构的设计，使缸盖冷却水在缸盖内尽可能的冷却缸盖底部，并汇流下层水腔的冷却水经过鼻梁高温区域，使缸盖下层水腔的冷却水尽可能的冷却预燃室的外表面，通过火花塞套上的水孔流向上层水腔，充分冷却火花塞头部高温区域，优化了缸盖水道的流场，解决了气缸盖火花塞冷却不充分的问题，以提高火花塞的使用寿命，降低了发动机的使用成本。The design of the layered water cavity and the spark plug structure of the pre-combustion chamber makes the cylinder head cooling water cool the bottom of the cylinder head as much as possible in the cylinder head, and the cooling water in the lower water cavity passes through the high temperature area of the nose bridge, so that the water in the lower layer of the cylinder head The cooling water in the cavity cools the outer surface of the pre-combustion chamber as much as possible, flows through the water hole on the spark plug sleeve to the upper water cavity, fully cools the high temperature area of the spark plug head, optimizes the flow field of the cylinder head water channel, and solves the problem of cylinder head spark plug cooling. Insufficient problems to improve the service life of spark plugs and reduce the cost of using the engine.
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| CN108035818B (en) | 2021-02-05 |
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