CN107740731A - A kind of engine cylinder head - Google Patents
A kind of engine cylinder head Download PDFInfo
- Publication number
- CN107740731A CN107740731A CN201711142680.0A CN201711142680A CN107740731A CN 107740731 A CN107740731 A CN 107740731A CN 201711142680 A CN201711142680 A CN 201711142680A CN 107740731 A CN107740731 A CN 107740731A
- Authority
- CN
- China
- Prior art keywords
- cooling water
- cylinder head
- chamber
- round boss
- water cavity
- 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.)
- Withdrawn
Links
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
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
-
- 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
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
- F02B19/1009—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements heating, cooling
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention belongs to marine engine design and manufacturing technology field, more particularly to a kind of engine cylinder head, two inlet valves, two exhaust valves, cooling water cavity and the precombustion chamber mounting groove set including enclosure interior, the middle and lower part of the precombustion chamber mounting groove is provided with an annular water chamber for being communicated to cooling water cavity, and the annular water chamber enables the neck of precombustion chamber to be exposed in cooling water cavity；Side where the outbreak surface is provided with first order round boss and second level round boss, cooling water inlet opening is offered on the outer ring surface of the second level round boss, the outer wall that extends radially to precombustion chamber of the cooling water inlet opening along second level round boss simultaneously connects with the annular water chamber, cooling water is flowed into cooling water cavity from the annular water chamber.It is that two layers of water cavity adds one layer of cooling water inlet opening that cooling water cavity, which has three layers of water channel, it is ensured that while cylinder head structure intensity, improves cooling effect；Precombustion chamber directly contacts with the cooling water in cooling water cavity, improves the cooling effect of precombustion chamber.
Description
Technical field
The invention belongs to marine engine design and manufacturing technology field, and in particular to a kind of engine cylinder head.
Background technology
The use environment and applying working condition of marine engine are different from automobile engine, thus in structure with car engine
There is certain difference in machine, most obvious of which difference is that the volume of marine engine is much greater compared with automobile engine, by
Just need to be optimized and transformed accordingly in each functional structure in the increase of volume, engine.Start with orthodox car
The integral type cylinder cap of machine is compared, and the cylinder head above each piston cylinder of marine engine is independent machine-shaping, and this is just to cylinder head
Cooling structure and intake and exhaust structure propose new design requirement.
The content of the invention
It is an object of the invention to provide a kind of engine cylinder head, the cylinder head is carried out again to intake and exhaust structure and cooling structure
Design, it is ensured that under the premise of cooling water and intake and exhaust circulation smoothly, adapted to the power requirement of big-block engine peculiar to vessel.
To achieve the above object, the invention provides following technical scheme：A kind of engine cylinder head, including enclosure interior are set
Two inlet valves, two exhaust valves, cooling water cavity and the precombustion chamber mounting groove put, housing bottom is provided with matches somebody with somebody with engine cylinder-body
The outbreak surface of conjunction, the precombustion chamber mounting groove are vertically set from casing center through housing, and the cooling water cavity is surround
Precombustion chamber mounting groove is set, and the middle and lower part of the precombustion chamber mounting groove is provided with an annular water chamber for being communicated to cooling water cavity, the ring
Shape water cavity enables the neck of precombustion chamber to be exposed in cooling water cavity；It is convex that side where the outbreak surface is provided with first order circle
Platform and second level round boss, the second level round boss are co-axially located on the bottom surface of first order round boss, and second
The diameter of level round boss is less than the diameter of first order round boss, is offered on the outer ring surface of the second level round boss cold
But water inlet opening, the outer wall that extends radially to precombustion chamber of the cooling water inlet opening along second level round boss and with the ring
Shape water cavity connects, and cooling water is flowed into cooling water cavity from the annular water chamber.
The side wall of the cooling water cavity is provided with ecto-entad and overhang obliquely the dividing plate of setting, and the dividing plate is by cooling water
Chamber is divided into two layers up and down, and the inner of upper and lower two layers of cooling water cavity is interconnected.
Vertically see, two inlet valves and two exhaust valves are distributed in positive direction, and the line between two inlet valves
And two lines between exhaust valve is set with engine crankshaft arragement direction in 35 ° of angles.
Inner one section of the cooling water inlet opening is molded with cooling water cavity integral cast, and institute is removed in cooling water inlet opening
The other parts beyond one section of casting are stated by bore process machine-shaping.
An extension tube is terminated with the precombustion chamber mounting groove, the extension tube protrudes out to cylinder head upper end case upwards
Outside, the spark plug cable in cylinder head is led to the outside of cylinder head case by extension tube, and the upper end of the extension tube is additionally provided with
Ozone steam vent.
The outer ring surface of the first order round boss is provided with sealing ring.
The edge of the housing is provided with multiple screw rod connecting holes vertically set through housing.
The technical effects of the invention are that：It is that two layers of water cavity adds one layer of cooling water water inlet that cooling water cavity, which has three layers of water channel,
Hole, it is ensured that while cylinder head structure intensity, improve cooling effect；Precombustion chamber directly contacts with the cooling water in cooling water cavity, carries
The high cooling effect of precombustion chamber.
Brief description of the drawings
Fig. 1 is the sectional view of the cylinder head of the present invention；
Fig. 2 is the cylinder head outbreak surface plan of the present invention；
Fig. 3 is the stereogram of the cylinder head of the present invention；
Fig. 4 is sectional view of the cylinder head with cylinder cover enclosure assemble mechanism of the present invention；
Fig. 5 is Fig. 4 I partial enlarged views.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
As Figure 1-5, a kind of engine cylinder head, including two inlet valves, 13, two exhausts that the inside of housing 10 is set
Door 14, cooling water cavity 11 and the mounting groove 12 of precombustion chamber 17, the bottom of housing 10 are provided with the outbreak surface coordinated with engine cylinder-body, institute
State the mounting groove 12 of precombustion chamber 17 vertically to set through housing 10 from the center of housing 10, the cooling water cavity 11 is around pre-burning
The mounting groove 12 of room 17 is set, and the middle and lower part of the mounting groove 12 of precombustion chamber 17 is provided with an annular water chamber for being communicated to cooling water cavity 11
113, the annular water chamber 113 enables the neck of precombustion chamber 17 to be exposed in cooling water cavity 11；Side where the outbreak surface
Provided with first order round boss 15 and second level round boss 16, the second level round boss 16 is co-axially located at first order circle
On the bottom surface of shape boss 15, and the diameter of second level round boss 16 be less than first order round boss 15 diameter, described second
Cooling water inlet opening 111 is offered on the outer ring surface of level round boss 16, the cooling water inlet opening 111 is convex along second level circle
The outer wall for extending radially to precombustion chamber 17 of platform 16 simultaneously connects with the annular water chamber 113, enables cooling water from the annular water
Chamber 113 flows into cooling water cavity 11.It is that two layers of water cavity adds one layer of cooling water inlet opening 111 that cooling water cavity 11, which has three layers of water channel, really
While protecting cylinder head structure intensity, cooling effect is improved；Precombustion chamber 17 directly contacts with the cooling water in cooling water cavity 11, improves
The cooling effect of precombustion chamber 17.
Preferably, the side wall of the cooling water cavity 11 is provided with ecto-entad and overhang obliquely the dividing plate 112 of setting, described
Cooling water cavity 11 is divided into two layers up and down, and the inner of upper and lower two layers of cooling water cavity 11 is interconnected by dividing plate 112.Dividing plate 112
It is favorably improved the bulk strength of cooling water cavity 11.
Preferably, vertically see, the exhaust valve 14 of two inlet valve 13 and two is distributed in positive direction, and two inlet valves
The line between line and two exhaust valves 14 between 13 is set with engine crankshaft arragement direction in 35 ° of angles.This gas
The valve system arrangement of door form is more simple, has more preferable air flue quality, high load carrying capacity also improves.
Preferably, inner one section of the cooling water inlet opening 111 is molded with the integral cast of cooling water cavity 11, cooling
Other parts of the water inlet opening 111 in addition to one section of the casting are by bore process machine-shaping.Cooling water inlet opening
111 processing modes combined using drilling with casting, can have a higher cooling water flow velocity, and the wall thickness between machined surface can be with
Very little, contribute to the optimization of structural stress, there is the preferable rigidity of structure.
Preferably, the mounting groove 12 of precombustion chamber 17 on be terminated with an extension tube 21, the extension tube 21 is convex
Extend the outside of cylinder head upper end case 20, the spark plug cable 23 in cylinder head is led to the outer of cylinder head case 20 by extension tube 21
Portion, the upper end of the extension tube 21 are additionally provided with ozone steam vent 22.
Further, the outer ring surface of the first order round boss 15 is provided with sealing ring 151.The edge of the housing 10
Provided with multiple screw rod connecting holes 18 vertically set through housing 10.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. two inlet valves (13) set inside a kind of engine cylinder head, including housing (10), two exhaust valves (14), cooling
Water cavity (11) and precombustion chamber mounting groove (12), housing (10) bottom are provided with the outbreak surface coordinated with engine cylinder-body, its feature
It is：The precombustion chamber mounting groove (12) is vertically set from housing (10) center through housing (10), the cooling water
Chamber (11) is set around precombustion chamber mounting groove (12), and the middle and lower part of the precombustion chamber mounting groove (12) is communicated to cooling water provided with one
The annular water chamber (113) of chamber (11), the annular water chamber (113) enable the neck of precombustion chamber (17) to be exposed to cooling water cavity (11)
In；Side where the outbreak surface is provided with first order round boss (15) and second level round boss (16), the second level
Round boss (16) is co-axially located on the bottom surface of first order round boss (15), and the diameter of second level round boss (16) is small
Diameter in first order round boss (15), cooling water inlet opening is offered on the outer ring surface of the second level round boss (16)
(111), the outer wall that extends radially to precombustion chamber (17) of the cooling water inlet opening (111) along second level round boss (16) be simultaneously
Connected with the annular water chamber (113), cooling water is flowed into cooling water cavity (11) from the annular water chamber (113).
2. engine cylinder head according to claim 1, it is characterised in that：The side wall of the cooling water cavity (11) be provided with by
Overhang the dividing plate (112) of setting obliquely outside to inside, and cooling water cavity (11) is divided into two layers up and down by the dividing plate (112), and
The inner of upper and lower two layers of cooling water cavity (11) is interconnected.
3. engine cylinder head according to claim 1, it is characterised in that：Vertically see, two inlet valve (13)
It is distributed with two exhaust valves (14) in positive direction, and the line between the line and two exhaust valves (14) between two inlet valves (13)
Set with engine crankshaft arragement direction in 35 ° of angles.
4. engine cylinder head according to claim 1, it is characterised in that：The cooling water inlet opening (111) it is inner
One section is molded with cooling water cavity (11) integral cast, and cooling water inlet opening (111) are in addition to one section of the casting
Other parts are by bore process machine-shaping.
5. engine cylinder head according to claim 1, it is characterised in that：The upper end of precombustion chamber (17) mounting groove (12)
It is connected to an extension tube (21), the extension tube (21) protrudes out to the outside of cylinder head upper end case (20) upwards, the fire in cylinder head
Flower plug cable (23) is led to the outsides of cylinder head case (20) by extension tube (21), and the upper end of the extension tube (21) is additionally provided with smelly
Oxygen steam vent (22).
6. engine cylinder head according to claim 1, it is characterised in that：The outer ring surface of the first order round boss (15)
It is provided with sealing ring (151).
7. engine cylinder head according to claim 1, it is characterised in that：The edge of the housing (10) is provided with multiple along perpendicular
Nogata is to the screw rod connecting hole (18) set through housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142680.0A CN107740731A (en) | 2017-11-17 | 2017-11-17 | A kind of engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142680.0A CN107740731A (en) | 2017-11-17 | 2017-11-17 | A kind of engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107740731A true CN107740731A (en) | 2018-02-27 |
Family
ID=61234729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711142680.0A Withdrawn CN107740731A (en) | 2017-11-17 | 2017-11-17 | A kind of engine cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107740731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360614A (en) * | 2020-10-27 | 2021-02-12 | 重庆健森动力机械有限公司 | Cooling system of motorcycle engine |
-
2017
- 2017-11-17 CN CN201711142680.0A patent/CN107740731A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360614A (en) * | 2020-10-27 | 2021-02-12 | 重庆健森动力机械有限公司 | Cooling system of motorcycle engine |
| CN112360614B (en) * | 2020-10-27 | 2022-01-25 | 重庆健森动力机械有限公司 | Cooling system of motorcycle engine |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180227 |
|
| WW01 | Invention patent application withdrawn after publication |