CN111075591B - Cylinder cover water cavity assembly with bushing - Google Patents
Cylinder cover water cavity assembly with bushing Download PDFInfo
- Publication number
- CN111075591B CN111075591B CN202010021999.3A CN202010021999A CN111075591B CN 111075591 B CN111075591 B CN 111075591B CN 202010021999 A CN202010021999 A CN 202010021999A CN 111075591 B CN111075591 B CN 111075591B
- Authority
- CN
- China
- Prior art keywords
- water channel
- exhaust valve
- nose bridge
- cylinder cover
- water
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
-
- 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
Abstract
The invention aims to solve the problem of providing a cylinder cover water cavity assembly with a lining, which enables cooling liquid with limited flow to directly impact the bottom surface of a cylinder cover, enhances the heat exchange of the bottom surface of the cylinder cover, and enables the cooling liquid to be more uniformly distributed in each nose bridge area, so that the cylinder cover is cooled more uniformly. The device comprises a water collecting cavity, an air inlet and outlet valve nose bridge water channel I, an air inlet and outlet valve nose bridge water channel II, an exhaust valve nose bridge water channel and a spark plug mounting assembly; the spark plug mounting assembly comprises a lining and a spark plug, the lining is mounted at the bottom of a cylinder cover, the spark plug is mounted in the lining, an annular water channel is formed in the outer wall of the lining, and the annular water channel is directly communicated with an intake and exhaust valve bridge nose water channel I and an intake and exhaust valve bridge nose water channel II.
Description
Technical Field
The invention relates to the field of internal combustion engines, in particular to a cylinder cover water cavity assembly with a bushing, belonging to the field of cylinder cover water cavities of internal combustion engines.
Background
With the implementation of the national six-emission regulations, each engine manufacturer needs to modify its original combustion strategy to meet this more stringent emission restriction requirement. The changes of the combustion modes such as the improvement of the combustion temperature and the combustion pressure of a diesel engine, the equivalent combustion of a gas engine and the like bring a common problem, namely the temperature in a combustion chamber is greatly improved, the heat load of a cylinder cover and a cylinder body is increased, and the component failure tendency is obvious.
The cylinder cover cooling pressure of the model developed earlier is small, and meanwhile, in order to achieve compact arrangement, as shown in fig. 1, the reserved space between the air inlet and exhaust passage and the air inlet and exhaust valve is small, cooling water channels are arranged in the two air inlet and exhaust valve nose bridge areas and the air outlet valve nose bridge area, and the cooling water channels are not arranged in the air inlet and exhaust nose bridge area. The cooling liquid enters the water collecting cavity on the side surface of the cylinder cover and then enters the top of the fire surface of each cylinder through the water inlet of each cylinder. The air intake and exhaust nose bridge water channel flows to the center of the cylinder cover from the near end, and then is distributed into the far end air intake and exhaust valve nose bridge water channel and the exhaust valve nose bridge water channel through a precast channel. The problem that this water flow mode produced is that the coolant liquid is most distributed to the regional of the bridge of the nose of the exhaust valve, and the coolant liquid flow that gets into distal end income exhaust valve bridge of the nose water course is less, and the coolant liquid is to the exhaust valve direction of detouring, does not have the cooling effect to the regional of the bridge of the nose of the intake valve. Thus, the inlet nose bridge area and the far end inlet and outlet valve nose bridge generate larger stress concentration.
Disclosure of Invention
The invention aims to solve the problem of providing a cylinder cover water cavity assembly with a lining, which enables cooling liquid with limited flow to directly impact the bottom surface of a cylinder cover, enhances the heat exchange of the bottom surface of the cylinder cover, and enables the cooling liquid to be more uniformly distributed in each nose bridge area, so that the cylinder cover is cooled more uniformly.
The invention is realized by the following technical scheme:
a cylinder cover water cavity assembly with a bush comprises a water collecting cavity, an air inlet and exhaust valve nose bridge water channel I, an air inlet and exhaust valve nose bridge water channel II, an exhaust valve nose bridge water channel and a spark plug mounting assembly;
the water inlet of the air inlet and exhaust valve nose bridge water channel I is communicated with the water collecting cavity, the air inlet and exhaust valve nose bridge water channel I, the air inlet and exhaust valve nose bridge water channel II and the exhaust valve nose bridge water channel are distributed in a T shape, and the spark plug mounting assembly is positioned at the joint of the air inlet and exhaust valve nose bridge water channel I, the air inlet and exhaust valve nose bridge water channel II and the exhaust valve nose bridge water channel;
the spark plug mounting assembly comprises a bushing and a spark plug, the bushing is mounted at the bottom of a cylinder cover, the spark plug is mounted in the bushing, an annular water channel is formed in the outer wall of the bushing, and the annular water channel is directly communicated with an intake and exhaust valve bridge nose water channel I and an intake and exhaust valve bridge nose water channel II.
Furthermore, the annular water tank is right opposite to a water inlet of the air inlet and outlet valve nose bridge water channel I.
Further, the bottom outer wall of bush is equipped with the installation screw thread, the bush passes through installation screw thread fixed connection in cylinder cap bottom, the upper portion of bush carries out sealed cooperation through O type circle and cylinder cap.
Compared with the prior art, the invention has the following beneficial effects:
1. the cooling liquid enters the inlet and exhaust valve nose bridge water channel I from the water collecting cavity and then directly impacts the annular water channel on the surface of the lining, so that the cooling liquid can directly flow to the inlet and exhaust valve nose bridge water channel II through the air inlet side of the annular water channel of the lining, the flow of the cooling liquid of the inlet and exhaust valve nose bridge water channel II is increased, and the cooling capacity of the inlet and exhaust valve nose bridge area at the far end is enhanced;
2. meanwhile, partial cooling is provided for the cylinder cover air inlet area when the cooling liquid passes through the air inlet side of the bushing annular water tank, so that the cracking risk of the air inlet nose bridge is reduced;
3. in the process that the cooling liquid directly impacts the annular water tank of the lining, the heat exchange capacity of the cooling liquid and the surface of the lining is enhanced, the cooling capacity of the cooling liquid on the spark plug is indirectly enhanced, the integral cooling is more uniform, and the reduction of the thermal stress is obvious.
Drawings
FIG. 1 is a cross sectional view of a cylinder head water chamber assembly in the prior art;
FIG. 2 is a cross sectional view of the cylinder head water chamber of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a water chamber of a cylinder head according to the present invention;
FIG. 4 is a schematic view of the bushing of the present invention;
in the figure: 1. the water collecting cavity comprises a water collecting cavity 2, inlet and exhaust valve nose bridge water channels I and 3, inlet and exhaust valve nose bridge water channels II and 4, an exhaust valve nose bridge water channel 5, a lining 6, a mounting thread, 7, an O-shaped ring, 8, an annular water tank, 9 and a spark plug.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the embodiments described herein are merely for the purpose of illustrating the invention and for the purpose of making the same more clear and concise the objects, aspects and advantages of the invention, and the detailed description of the invention will be made with reference to the drawings and the embodiments.
A cylinder cover water cavity assembly with a bush is shown in figures 2-4 and comprises a water collecting cavity 1, an intake and exhaust valve nose bridge water channel I2, an intake and exhaust valve nose bridge water channel II 3, an exhaust valve nose bridge water channel 4 and a spark plug mounting component. The inlet and exhaust valve nose bridge water channel I2 can be cooled by the near-end inlet and exhaust valve nose bridge area, the inlet and exhaust valve nose bridge water channel II 3 can be cooled by the far-end inlet and exhaust valve nose bridge area, and the exhaust valve nose bridge area can be cooled by the exhaust valve nose bridge water channel 4. The water inlet of the intake and exhaust valve nose bridge water channel I2 is communicated with the water collecting cavity 1, the intake and exhaust valve nose bridge water channel I2, the intake and exhaust valve nose bridge water channel II 3 and the exhaust valve nose bridge water channel are distributed in a T shape, and the junction of the intake and exhaust valve nose bridge water channel I2, the intake and exhaust valve nose bridge water channel II 3 and the exhaust valve nose bridge water channel is positioned in the center of the cylinder cover. The spark plug mounting assembly is positioned at the joint of the intake and exhaust valve nose bridge water channel I2, the intake and exhaust valve nose bridge water channel II 3 and the exhaust valve nose bridge water channel, and comprises a lining 5 and a spark plug 9. The bottom processing of cylinder cap foundry goods has the bush hole of installation bush, and the downthehole processing internal thread of bush, the bottom outer wall of bush are equipped with mounting thread 6, bush 5 is downthehole at the bush of cylinder cap bottom through 6 fixed connection of mounting thread, and 2 upper portions of bush are regional and the cylinder cap seals through the structure of O type circle 7. The outer wall of the lining is provided with an annular water channel 8, the annular water channel 8 can be directly communicated with the intake and exhaust valve bridge nose water channel I2 and the intake and exhaust valve bridge nose water channel II 3, and also can be directly communicated with the intake and exhaust valve bridge nose water channel I2 and the exhaust valve bridge nose water channel 4. The annular water tank 8 is right opposite to the water inlet of the air inlet and outlet valve nose bridge water channel I2. Therefore, the cooling liquid can directly impact the annular water tank on the surface of the lining after entering each cylinder, the flow resistance is reduced, and the distribution of the flow of the cooling liquid is more facilitated.
The specific working process of the cylinder cover water cavity assembly with the bushing is as follows:
the cooling liquid enters the inlet and exhaust valve nose bridge water channel I from the water collecting cavity 8 and then directly impacts the annular water channel on the surface of the lining, so that a part of the cooling liquid can directly flow to the inlet and exhaust valve nose bridge water channel II through the right side of the annular water channel of the lining, the flow of the cooling liquid of the inlet and exhaust valve nose bridge water channel II is increased, and the cooling capacity of a far-end inlet and exhaust valve nose bridge area is enhanced; and the other part of cooling liquid directly enters the exhaust valve nose bridge water channel from the left side of the annular water tank to cool the exhaust valve nose bridge area. Meanwhile, when the cooling liquid passes through the right side of the bushing annular water tank, partial cooling is provided for the air inlet side, and the cracking risk of the air inlet nose bridge is reduced; in the process that the cooling liquid directly impacts the annular water tank of the lining, the heat exchange capacity of the cooling liquid and the surface of the lining is enhanced, the cooling capacity of the cooling liquid on the spark plug is indirectly enhanced, the integral cooling is more uniform, and the reduction of the thermal stress is obvious.
Claims (3)
1. A cylinder cover water cavity assembly with a bush is characterized by comprising a water collecting cavity, an air inlet and exhaust valve nose bridge water channel I, an air inlet and exhaust valve nose bridge water channel II, an exhaust valve nose bridge water channel and a spark plug mounting component;
the water inlet of the air inlet and exhaust valve nose bridge water channel I is communicated with the water collecting cavity, the air inlet and exhaust valve nose bridge water channel I, the air inlet and exhaust valve nose bridge water channel II and the exhaust valve nose bridge water channel are distributed in a T shape, and the spark plug mounting assembly is positioned at the joint of the air inlet and exhaust valve nose bridge water channel I, the air inlet and exhaust valve nose bridge water channel II and the exhaust valve nose bridge water channel;
the spark plug mounting assembly comprises a bushing and a spark plug, the bushing is mounted at the bottom of a cylinder cover, the spark plug is mounted in the bushing, an annular water channel is formed in the outer wall of the bushing, and the annular water channel is directly communicated with an intake and exhaust valve bridge nose water channel I and an intake and exhaust valve bridge nose water channel II.
2. The cylinder head water cavity assembly according to claim 1, wherein the annular water channel is opposite to the water inlet of the intake and exhaust valve nose bridge water channel I.
3. The cylinder cover water cavity assembly as claimed in claim 1, wherein the outer wall of the bottom end of the bushing is provided with a mounting thread, the bushing is fixedly connected to the bottom of the cylinder cover through the mounting thread, and the upper portion of the bushing is in sealing fit with the cylinder cover through an O-shaped ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021999.3A CN111075591B (en) | 2020-01-09 | 2020-01-09 | Cylinder cover water cavity assembly with bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010021999.3A CN111075591B (en) | 2020-01-09 | 2020-01-09 | Cylinder cover water cavity assembly with bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111075591A CN111075591A (en) | 2020-04-28 |
| CN111075591B true CN111075591B (en) | 2022-03-04 |
Family
ID=70322592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010021999.3A Active CN111075591B (en) | 2020-01-09 | 2020-01-09 | Cylinder cover water cavity assembly with bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111075591B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11536220B1 (en) * | 2022-03-10 | 2022-12-27 | Caterpillar Inc. | Passive igniter cooling in cylinder head assembly |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003214252A (en) * | 2002-01-18 | 2003-07-30 | Nissan Motor Co Ltd | Cooling device for cylinder head of internal combustion engine |
| KR100444468B1 (en) * | 2002-05-28 | 2004-08-16 | 현대자동차주식회사 | Engine structure for decreasing engine oil temperature |
| JP4133454B2 (en) * | 2003-03-05 | 2008-08-13 | 本田技研工業株式会社 | Cylinder head of internal combustion engine |
| CN2611617Y (en) * | 2003-03-21 | 2004-04-14 | 潍坊华东发动机有限公司 | Cylinder cap of directly spraying diesel engine |
| CN201100180Y (en) * | 2007-10-15 | 2008-08-13 | 山东华源莱动内燃机有限公司 | A four-gate jar cover for small jar diameter diesel |
| CN204003134U (en) * | 2014-08-26 | 2014-12-10 | 潍柴西港新能源动力有限公司 | Gas engine cylinder cap |
| CN204357576U (en) * | 2015-01-05 | 2015-05-27 | 重庆科克发动机技术有限公司 | A kind of sealing configuration of spark plug |
| CN105402046A (en) * | 2015-12-30 | 2016-03-16 | 广西玉柴机器股份有限公司 | Cooling structure of engine cylinder cover |
| CN106224115B (en) * | 2016-08-29 | 2018-12-14 | 潍柴动力股份有限公司 | A kind of cylinder cover for diesel engine |
| CN108035818B (en) * | 2017-11-17 | 2021-02-05 | 无锡开普动力有限公司 | Cylinder head for a prechamber spark plug |
-
2020
- 2020-01-09 CN CN202010021999.3A patent/CN111075591B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111075591A (en) | 2020-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0870918B1 (en) | Cooling structure for a fuel injection valve of an internal combustion engine and an internal combustion engine | |
| CN108035818B (en) | Cylinder head for a prechamber spark plug | |
| CN108915887B (en) | Supercharged direct injection engine cylinder cover and cooling water jacket structure thereof | |
| CN112065567B (en) | Engine combustion system | |
| CN111058959B (en) | Cylinder cover and cylinder cover cooling water cavity structure thereof | |
| CN111075591B (en) | Cylinder cover water cavity assembly with bushing | |
| JP3012796U (en) | Exhaust liner and seal assembly | |
| CN209781056U (en) | High-efficient reliable sealed natural gas cylinder head structure of cooling | |
| JPS6213759A (en) | Cooling water passage structure in cylinder head for internal-combustion engine | |
| JP2024511013A (en) | liquid-cooled internal combustion engine | |
| CN210509412U (en) | Cylinder cover of diesel engine | |
| CN210013764U (en) | Water side unloading groove structure of cylinder cover bottom plate | |
| CN110131066B (en) | Water side unloading groove structure of bottom plate of cylinder cover | |
| CN114233507A (en) | Cooling water jacket of engine cylinder head | |
| CN216111031U (en) | Cooling water jacket of cylinder head, engine and vehicle | |
| JP3699312B2 (en) | Structure of in-cylinder fuel injection internal combustion engine | |
| CN218439551U (en) | Cylinder cover | |
| CN205823469U (en) | A kind of cylinder of motorcycle engine assembly | |
| CN208669449U (en) | A kind of engine cylinder cover that thermal diffusivity is good | |
| CN217107239U (en) | Cylinder head and engine | |
| CN112628013B (en) | Mostly plastic internal combustion engine cylinder head | |
| CN214499249U (en) | Engine for vehicle and vehicle | |
| CN217176763U (en) | Engine cylinder cover body and vehicle with same | |
| CN218235281U (en) | Cylinder head bottom plate partition cooling water jacket and engine | |
| JP3687989B2 (en) | Cooling water passage structure of cylinder head of internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |