CN107461271A - Cylinder head - Google Patents
Cylinder head Download PDFInfo
- Publication number
- CN107461271A CN107461271A CN201710820343.6A CN201710820343A CN107461271A CN 107461271 A CN107461271 A CN 107461271A CN 201710820343 A CN201710820343 A CN 201710820343A CN 107461271 A CN107461271 A CN 107461271A
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- cooling water
- head body
- sleeve pipe
- cavitation pitting
- 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.)
- Granted
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
- F02F1/24—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
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
-
- 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
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
-
- 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
Abstract
The present invention relates to a kind of cylinder head, suitable for charge inter cooling structure engine, including cylinder head body, the bottom of cylinder head body position corresponding with inlet valve is provided with inlet valve valve seat, the bottom of cylinder head body position corresponding with exhaust valve is provided with exhaust valve valve seat, cooling jacket is internally provided with cylinder head body, multiple cooling water holes are offered on cylinder head body, each cooling water hole connects to form cooling water circulation passage with the inside of cooling jacket respectively, the anti-cavitation pitting sleeve pipe being set on exhaust valve valve seat is additionally provided with the bottom of cylinder head body, formed with cooling water cavity between anti-cavitation pitting sleeve pipe and exhaust valve valve seat, the through hole that one end connects with cooling water cavity and the other end connects with cooling water circulation passage is offered on anti-cavitation pitting sleeve pipe.The present invention can slow down cavitation pitting to be influenceed to caused by cylinder head, significantly lifting cylinder lid service life.
Description
Technical field
The present invention relates to a kind of cylinder head.
Background technology
The effect of cylinder head is blanket gas cylinder sleeve and is collectively forming the bags with piston, its structure and complex-shaped,
In addition to it must bear high-temperature high-pressure fuel gas effect, very big bolt pretightening must also be born.The Temperature Distribution of cylinder head each several part is very
Uneven, as bottom surface combustor section temperature is very high, and cooling jacket portion temperature is relatively low, and inlet and outlet channel temp difference is also very
Greatly, therefore the mechanical stress born of cylinder head and thermal stress are all very big.
Cylinder head working environment is extremely complex, requires higher to cooling system, current similar type uses fresh water cooled
The phenomenon that cylinder cover valve seat cavitation pitting causes cylinder head to fail mostly be present in the cylinder head that structure, particularly oceangoing voyage use.Cause
Cylinder head service life is greatly lowered in cavitation pitting, turns into an important problem for restricting cylinder head development at present.
In the prior art, the above-mentioned cavitation erosion of the non-water-cooling structure reduction of usually used inlet valve seat ring, but the knot
Structure is improved just for suction valve cone coil structures, it is impossible to fully effective solution cavitation problems, in some instances it may even be possible to trigger exhaust valve
The problem of cavitation problems are even more serious at seat ring.
The content of the invention
The present invention is to propose in view of the above problems, and its object is to provide a kind of cylinder head, it can slow down cavitation pitting
Influenceed to caused by cylinder head, significantly lifting cylinder lid service life.
The following technical scheme is adopted to achieve the purpose of the present invention.
The invention of technical scheme 1 is a kind of cylinder head, suitable for charge inter cooling structure engine, including cylinder head body,
Being internally provided with air intake duct, exhaust duct and connected respectively with the air intake duct and the exhaust duct in the cylinder head body
Inlet valve and exhaust valve, the position corresponding with the inlet valve of the bottom of the cylinder head body is provided with air inlet gate valve
Seat, is provided with exhaust valve valve seat, in the cylinder at the position corresponding with the exhaust valve of the bottom of the cylinder head body
Lid body is internally provided with cooling jacket, and multiple cooling water holes, each cooling are offered on the cylinder head body
Water hole connects to form cooling water circulation passage with the inside of the cooling jacket respectively, is also set in the bottom of the cylinder head body
The anti-cavitation pitting sleeve pipe being set on the exhaust valve valve seat is equipped with, the shape between the anti-cavitation pitting sleeve pipe and the exhaust valve valve seat
Into there is cooling water cavity, one end is offered on the anti-cavitation pitting sleeve pipe and is connected with the cooling water cavity and the other end and the cooling
The through hole of water circulation channel connection.
In addition, the cylinder head of technical scheme 2, in the cylinder head of technical scheme 1, the through hole is two, described in two
Through hole is symmetrically opened up using the central point of the anti-cavitation pitting sleeve pipe as symmetrical centre.
In addition, the cylinder head of technical scheme 3, in the cylinder head of technical scheme 1, is opened in the inside of the cylinder head body
Provided with the annular groove that can fix the anti-cavitation pitting sleeve pipe, the anti-cavitation pitting sleeve pipe is with the inside of the insertion annular groove
Mode is arranged on the inside of the cylinder head body.
In addition, the cylinder head of technical scheme 4, in the cylinder head of technical scheme 3, the depth of the annular groove is not less than
The casing thickness of the anti-cavitation pitting sleeve pipe.
In addition, the cylinder head of technical scheme 5, in the cylinder head of technical scheme 1, the anti-cavitation pitting sleeve pipe is by stainless steel
Into.
In addition, the cylinder head of technical scheme 6, in the cylinder head of technical scheme 1, on the side of the cylinder head body
Offer the cleaning hole for cleaning the cooling water cavity.
In addition, the cylinder head of technical scheme 7, in the cylinder head of technical scheme 1, the valve opening of the inlet valve valve seat it is straight
Footpath is more than the diameter of the valve opening of the exhaust valve valve seat.
In addition, the cylinder head of technical scheme 8, in the cylinder head of technical scheme 1, sets in the bottom of the cylinder head body
Bottom plate is equipped with, each cooling water hole is opened on the bottom plate respectively, and the cooling water circulation passage is in the bottom plate
It is internally formed as three-decker.
In addition, the cylinder head of technical scheme 9, in the cylinder head of technical scheme 8, in the cooling water circulation passage
Portion is provided with cooling water pipe.
In addition, the cylinder head of technical scheme 10, in the cylinder head of technical scheme 1, in the bottom of the cylinder head body
Bottom plate is provided with, the sealing convex shoulder of ring-type is provided with below the bottom plate.
Compared with prior art, following beneficial effect can be produced using above-mentioned technical proposal, cylinder head provided by the invention.
Practice have shown that for charge inter cooling structure engine, into cylinder head intake air temperature due to the effect of charge air cooler
Intake air temperature is relatively low, and its temperature typically at 50 DEG C or so, can effectively achieve cooling effect, and inlet valve is verified through simulation analysis
It is feasible using non-water-cooling structure, cylinder head and valve temperature field meet design requirement, and inlet valve seat ring uses non-aqueous cold junction
Cavitation pitting failure can be completely eliminated in structure；But exhaust side temperature is higher, thermic load is serious, therefore must use water-cooling structure.
In order to prevent the generation of exhaust side bubble and bury in oblivion the high frequency of initiation, high-strength press Reeb is caused to cylinder head body
Directly affect, the invention of technical scheme 1 provides a kind of cylinder head, and suitable for charge inter cooling structure engine, it includes cylinder
Lid body, being internally provided with air intake duct, exhaust duct and enter respectively with what air intake duct and exhaust duct connected in cylinder head body
Valve and exhaust valve, the bottom of cylinder head body position corresponding with inlet valve is provided with inlet valve valve seat, in cylinder head
The position corresponding with exhaust valve of the bottom of body is provided with exhaust valve valve seat, and cooling water is internally provided with cylinder head body
Set, offers multiple cooling water holes, each cooling water hole connects to be formed with the inside of cooling jacket respectively on cylinder head body
Cooling water circulation passage, the anti-cavitation pitting sleeve pipe being set on exhaust valve valve seat is additionally provided with the bottom of cylinder head body, anti-
Formed with cooling water cavity between cavitation pitting sleeve pipe and exhaust valve valve seat, on anti-cavitation pitting sleeve pipe offer one end connects with cooling water cavity
And the through hole that the other end connects with cooling water circulation passage.
In above structure, by setting anti-cavitation pitting sleeve pipe and opening up through hole on the anti-cavitation pitting sleeve pipe, coolant can be made
Bubble after the rupture of the inner side of the anti-cavitation pitting sleeve pipe again by the through hole that opens up with cylinder head body contacts so as to reducing cylinder head
The temperature of body, reduces thermic load, and whole process can effectively prevent that cylinder head body and the coolant in cooling water cavity are direct
Contact, so as to effectively prevent the generation of bubble and bury in oblivion the high frequency of initiation, high-strength press Reeb is caused directly to cylinder head body
Influence, slow down cavitation pitting and damaged to caused by cylinder head, make cylinder head more durable in use.
And verified by delivery test, the structure can ensure that cavitation problems do not occur in a long time for cylinder head, have
Solve cylinder head due to catastrophe failure caused by valve seat cavitation pitting to effect, substantially increase the cylinder head life-span.
According to the invention of technical scheme 2, above-mentioned through hole is two, and two through holes are symmetrical to prevent the central point of cavitation pitting sleeve pipe
Center symmetrically opens up, and by such structure, can effectively ensure that the company between cooling water cavity and cooling water circulation passage
The general character, so as to ensure the patency between the cooling water cavity at exhaust valve valve seat and cylinder head entirety cooling water cavity, ensure cooling
Effect.
According to the invention of technical scheme 3, the annular that can fix anti-cavitation pitting sleeve pipe is offered in the inside of cylinder head body
Groove, anti-cavitation pitting sleeve pipe are arranged on the inside of cylinder head body in a manner of the inside of the embedded annular groove.
By above structure, anti-cavitation pitting sleeve pipe can be made to be stably connected with cylinder head body, ensured cold in cooling water cavity
But liquid maintains well stable cooling effect to cylinder head body and exhaust valve valve seat.
According to the invention of technical scheme 4, in the invention of technical scheme 3, the depth of above-mentioned annular groove is not less than anti-
The casing thickness of cavitation pitting sleeve pipe, it by such structure, can ensure that the rear defence cavitation pitting sleeve pipe of anti-cavitation pitting sleeve pipe and exhaust are installed
The volume of the cooling water cavity formed between gate valve seat will not be less than cylinder head body and exhaust gate valve before installing anti-cavitation pitting sleeve pipe
The volume of the cooling water cavity formed between seat, so as to ensure that the present invention has good coolant to cylinder head body and row
The effect that valve seat insert is cooled down, furthermore it is ensured that in installation process, will not between inlet valve valve seat and anti-cavitation pitting sleeve pipe
Interfere, so as to meet matching requirements.
According to the invention of technical scheme 5, by setting anti-cavitation pitting sleeve pipe to be made of stainless steel, anti-cavitation pitting set can be avoided as far as possible
The pipe range time contacted with water during quickly by the phenomenon of corrosion, so as to ensure that anti-cavitation pitting sleeve pipe prevents the long-term of cavitation pitting function
Validity.
According to the invention of technical scheme 6, by being offered on the side of cylinder head body for cleaning cooling water cavity
Cleaning hole, make that cooling water cavity can be timed cleaning by the cleaning pore structure, avoid the impurity in cooling water cavity from blocking cold
But water circulation channel, so as to ensure that the coolant in cooling water circulation passage has good mobility.
According to the invention of technical scheme 7, by setting the diameter of valve opening of inlet valve valve seat to be more than the valve of exhaust valve valve seat
The diameter in hole, the flow losses of gas can be reduced, increase air inflow.
According to the invention of technical scheme 8, bottom plate is provided with the bottom of cylinder head body, each cooling water hole opens up respectively
On bottom plate, cooling water circulation passage is internally formed as three-decker bottom plate, can be three layers by this by such structure
Structure expands distribution space of the cooling water circulation passage in the inside of cylinder head body, increases the flow area of coolant, so as to
Reach more preferable heat transfer effect.
According to the invention of technical scheme 9, on the basis of technical scheme 8, it is provided with the inside of cooling water circulation passage
Cooling water pipe, by such structure, internal flow of the coolant directly in bottom plate can be avoided, is advantageous to slow down coolant pair
The erosion of bottom plate.
According to the invention of technical scheme 10, the bottom of cylinder head body is provided with bottom plate, is provided with below bottom plate
The sealing convex shoulder of ring-type, by such structure, the bottom of cylinder head body can be strengthened by the sealing convex shoulder with being arranged on
Sealing between the combustion chamber of the bottom of cylinder head body, make sealing tighter.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the cooling structure schematic diagram for the specific embodiment for representing cylinder head provided by the invention.
Fig. 2 is the structural representation of the anti-cavitation pitting sleeve pipe for the specific embodiment for representing cylinder head provided by the invention.
Fig. 3 is the three-decker signal of the cooling water circulation passage for the specific embodiment for representing cylinder head provided by the invention
Figure.
Reference：1- cylinder head bodies；2- inlet valves；3- exhaust valves；4- inlet valve valve seats；5- exhaust valve valve seats；6-
Cooling water hole；The anti-cavitation pitting sleeve pipes of 7-；71- through holes；8- cooling water cavities.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
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.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Below according to the overall structure of cylinder head provided by the invention, its specific embodiment is illustrated.
Fig. 1 is the cooling structure schematic diagram for the specific embodiment for representing cylinder head provided by the invention.Fig. 2 is to represent this hair
The structural representation of the anti-cavitation pitting sleeve pipe of the specific embodiment of the cylinder head of bright offer.Fig. 3 is to represent cylinder provided by the invention
The three-decker schematic diagram of the cooling water circulation passage of the specific embodiment of lid.
As shown in Figure 1, Figure 2 and Figure 3, the cylinder head is applied to charge inter cooling structure engine, including cylinder head body 1,
Cylinder head body 1 be internally provided with air intake duct, exhaust duct and the inlet valve 2 connected respectively with air intake duct and exhaust duct and
Exhaust valve 3,2 corresponding position of inlet valve is provided with inlet valve valve seat 4 in the bottom of cylinder head body 1, in cylinder head sheet
The bottom of body 1 is provided with exhaust valve valve seat 5 with 3 corresponding position of exhaust valve.
Cooling jacket is internally provided with cylinder head body 1, multiple cooling water holes 6 are offered on cylinder head body 1,
Each cooling water hole 6 connects to form cooling water circulation passage with the inside of cooling jacket respectively.
The anti-cavitation pitting for being set on exhaust valve valve seat 5 and being made of stainless steel is additionally provided with the bottom of cylinder head body 1
Sleeve pipe 7, formed with cooling water cavity 8 between anti-cavitation pitting sleeve pipe 7 and exhaust valve valve seat 5, one end is offered on anti-cavitation pitting sleeve pipe 7
Connected with cooling water cavity 8 and through hole 71 that the other end connects with cooling water circulation passage.
Further, the above-mentioned through hole 71 being opened on anti-cavitation pitting sleeve pipe 7 is two, and two through holes 71 are to prevent cavitation pitting set
The central point of pipe 7 is that symmetrical centre symmetrically opens up.
In addition, the annular groove that can fix anti-cavitation pitting sleeve pipe 7 is offered in the inside of cylinder head body 1, anti-cavitation pitting set
Pipe 7 is arranged on the inside of cylinder head body 1 in a manner of the inside for being embedded in annular groove, and the depth of the annular groove is not less than
The casing thickness of anti-cavitation pitting sleeve pipe 7.
In addition, the cleaning hole for cleaning cooling water cavity 8 is offered on the side of cylinder head body 1.
In addition, the diameter of the valve opening of above-mentioned inlet valve valve seat 4 is more than the diameter of the valve opening of exhaust valve valve seat 5.
In addition, being provided with bottom plate in the bottom of cylinder head body 1, each cooling water hole 6 is opened on bottom plate respectively, cooling
Water circulation channel is internally formed as three-decker bottom plate, and cooling water pipe is provided with the inside of cooling water circulation passage.
In addition, being provided with bottom plate in the bottom of cylinder head body 1, the sealing convex shoulder of ring-type is provided with below bottom plate.
In above-mentioned embodiment, there is provided a kind of cylinder head, it is applied to charge inter cooling structure engine,
In its structure, by setting anti-cavitation pitting sleeve pipe and opening up through hole on the anti-cavitation pitting sleeve pipe, coolant bubble can be made in the anti-cave
After the inner side rupture of erosion sleeve pipe again by the through hole that opens up with cylinder head body contacts so as to reduce the temperature of cylinder head body, drop
Low heat loads, whole process can effectively prevent cylinder head body from directly being contacted with the coolant in cooling water cavity, so as to effectively
The generation for preventing bubble and the high frequency for burying in oblivion initiation, high-strength press Reeb cause to directly affect to cylinder head body, slow down cavitation pitting
Damage, makes cylinder head more durable in use to caused by cylinder head.
And verified by delivery test, the structure can ensure that cavitation problems do not occur in a long time for cylinder head, have
Solve cylinder head due to catastrophe failure caused by valve seat cavitation pitting to effect, substantially increase the cylinder head life-span.
In addition, the air cylinder head structure is simple, easily fabricated, running cost is low, suitable for wide popularization and application.
In addition, in above-mentioned embodiment, it is two to set the through hole on anti-cavitation pitting sleeve pipe, two through holes to prevent
The central point of cavitation pitting sleeve pipe is that symmetrical centre symmetrically opens up, by such structure, can effectively ensure that cooling water cavity with
Connectedness between cooling water circulation passage, so as to ensure the cooling water cavity at exhaust valve valve seat and cylinder head entirety cooling water cavity
Between patency, ensure cooling effect.
In addition, in above-mentioned embodiment, anti-cavitation pitting set can be fixed by being offered in the inside of cylinder head body
The annular groove of pipe, anti-cavitation pitting sleeve pipe are arranged on the inside of cylinder head body in a manner of the inside of the embedded annular groove.It is logical
Such structure is crossed, anti-cavitation pitting sleeve pipe can be made to be stably connected with cylinder head body, ensures the coolant in cooling water cavity to gas
Cylinder cap body and exhaust valve valve seat maintain well stable cooling effect.
In addition, in above-mentioned embodiment, the depth of annular groove is set to be not less than the sleeve pipe of anti-cavitation pitting sleeve pipe
Thickness, by such structure, formed between the rear defence cavitation pitting sleeve pipe and exhaust valve valve seat that can ensure to install anti-cavitation pitting sleeve pipe
Cooling water cavity volume will not be less than anti-cavitation pitting sleeve pipe is installed before formed between cylinder head body and exhaust valve valve seat it is cold
But the volume of water cavity, so as to ensure that it is cold that there is the present invention good coolant to be carried out to cylinder head body and exhaust valve valve seat
But effect, furthermore it is ensured that in installation process, will not be interfered between inlet valve valve seat and anti-cavitation pitting sleeve pipe, so as to
Meet matching requirements.
In addition, in above-mentioned embodiment, by setting anti-cavitation pitting sleeve pipe to be made of stainless steel, can avoid as far as possible
Anti- cavitation pitting sleeve pipe contacted for a long time with water during quickly by the phenomenon of corrosion, so as to ensure that anti-cavitation pitting sleeve pipe prevents cavitation pitting work(
The long-term effectiveness of energy.
In addition, in above-mentioned embodiment, it is cold for cleaning by being offered on the side of cylinder head body
But the cleaning hole of water cavity, make that cooling water cavity can be timed cleaning by the cleaning pore structure, avoid miscellaneous in cooling water cavity
Matter blocks cooling water circulation passage, so as to ensure that the coolant in cooling water circulation passage has good mobility.
In addition, in above-mentioned embodiment, by setting the diameter of valve opening of inlet valve valve seat to be more than exhaust valve
The diameter of the valve opening of valve seat, the flow losses of gas can be reduced, increase air inflow.
In addition, in above-mentioned embodiment, bottom plate, each cooling water hole are provided with the bottom of cylinder head body
It is opened in respectively on bottom plate, cooling water circulation passage is internally formed as three-decker bottom plate, by such structure, can be led to
Cross the three-decker and expand distribution space of the cooling water circulation passage in the inside of cylinder head body, increase the flow surface of coolant
Product, so as to reach more preferable heat transfer effect.
In addition, in above-mentioned embodiment, cooling water pipe is installed in the inside of cooling water circulation passage, led to
Such structure is crossed, internal flow of the coolant directly in bottom plate can be avoided, is advantageous to slow down erosion of the coolant to bottom plate.
In addition, in above-mentioned embodiment, the bottom of cylinder head body is provided with bottom plate, in the lower section of bottom plate
Be provided with the sealing convex shoulder of ring-type, by such structure, can be strengthened by the sealing convex shoulder bottom of cylinder head body with
The sealing being arranged between the combustion chamber of the bottom of cylinder head body, make sealing tighter.
In addition, in the above-described embodiment, the concrete structure of the present invention is illustrated, but not limited to this.
For example, in above-mentioned embodiment, it is two to set the through hole on anti-cavitation pitting sleeve pipe, two through holes to prevent
The central point of cavitation pitting sleeve pipe is that symmetrical centre symmetrically opens up, but not limited to this, the through hole can also be arranged to one
Either three or four or other are several, as long as can make coolant through the tube wall of anti-cavitation pitting sleeve pipe so as to cylinder head
Body is cooled down, but number of openings should not be excessive, and should be tried one's best and be symmetrical arranged, wherein, according in embodiment
Structure be configured can be used as be preferably provided with structure, with realize be effectively ensured between cooling water cavity and cooling water circulation passage
Connectedness, so as to ensure the patency between the cooling water cavity at exhaust valve valve seat and cylinder head entirety cooling water cavity, Jin Erbao
Demonstrate,prove the function of cooling effect.
In addition, in above-mentioned embodiment, anti-cavitation pitting set can be fixed by being offered in the inside of cylinder head body
The annular groove of pipe, anti-cavitation pitting sleeve pipe are arranged on the inside of cylinder head body in a manner of the inside of the embedded annular groove.But
This is not limited to, above-mentioned annular groove can also be not provided with, and directly anti-cavitation pitting sleeve pipe is set on exhaust valve valve seat, and
The outer tube wall of anti-cavitation pitting sleeve pipe is bonded as far as possible between cylinder head body, be equally reached the anti-cavitation pitting sleeve pipe of above-mentioned utilization
The effect of cylinder head body is protected, still, according to the structure described in specific embodiment, above-mentioned annular groove is set, can
Anti- cavitation pitting sleeve pipe is stably connected with cylinder head body, ensure the coolant in cooling water cavity to cylinder head body and exhaust gate valve
Seat maintains well stable cooling effect.
In addition, in above-mentioned embodiment, in the case where setting annular groove, the depth of annular groove is not small
In the casing thickness of anti-cavitation pitting sleeve pipe, but not limited to this, the depth of annular groove can also be greater than the set of anti-cavitation pitting sleeve pipe
Tube thickness, the above-mentioned effect using anti-cavitation pitting casing protection cylinder head body is equally reached, still, according to specific implementation
Structure described in example, set the depth of annular groove to be not less than the casing thickness of anti-cavitation pitting sleeve pipe, can ensure that anti-cave is installed
The anti-cavitation pitting set of installation will not be less than by losing the volume of the cooling water cavity formed between the rear defence cavitation pitting sleeve pipe and exhaust valve valve seat of sleeve pipe
The volume of the cooling water cavity formed before pipe between cylinder head body and exhaust valve valve seat, so as to ensure that it is good that the present invention has
The effect that good coolant is cooled down to cylinder head body and exhaust valve valve seat, furthermore it is ensured that in installation process, air inlet
It will not be interfered between gate valve seat and anti-cavitation pitting sleeve pipe, so as to meet matching requirements.
In addition, in above-mentioned embodiment, anti-cavitation pitting sleeve pipe is set to be made of stainless steel, but not limited to this,
The anti-cavitation pitting sleeve pipe can also be made up of gray cast iron or alloy cast iron, be equally reached the anti-cavitation pitting sleeve pipe of above-mentioned utilization
The effect of cylinder head body is protected, still, according to the structure described in specific embodiment, anti-cavitation pitting sleeve pipe is set by stainless steel
Into, can avoid as far as possible anti-cavitation pitting sleeve pipe contacted for a long time with water during quickly by the phenomenon of corrosion, so as to ensure anti-cavitation pitting
Sleeve pipe prevents the long-term effectiveness of cavitation pitting function.
In addition, in above-mentioned embodiment, offered on the side of cylinder head body for cleaning cooling water
The cleaning hole of chamber, but not limited to this, above-mentioned cleaning hole can not also be opened up, be equally reached above-mentioned water-cooled effect,
But above-mentioned cleaning hole is set, make that cooling water cavity can be timed cleaning by the cleaning pore structure, avoid cooling water cavity
In impurity block cooling water circulation passage, so as to ensure that the coolant in cooling water circulation passage has good mobility.
In addition, in above-mentioned embodiment, the diameter of the valve opening of inlet valve valve seat is set to be more than exhaust valve valve seat
Valve opening diameter, but not limited to this, the valve opening of the diameter and exhaust valve valve seat of the valve opening of inlet valve valve seat can also be set
Diameter it is identical, or the valve opening of inlet valve valve seat diameter be less than exhaust valve valve seat valve opening diameter, can reach profit
Air inlet and the effect of degassing function are realized with inlet valve hole and air release valve hole, still, according to the knot described in embodiment
Structure, the diameter of the valve opening of setting inlet valve valve seat are more than the diameter of the valve opening of exhaust valve valve seat, can reduce the flowing damage of gas
Lose, increase air inflow.
In addition, in above-mentioned embodiment, bottom plate, each cooling water hole are provided with the bottom of cylinder head body
It is opened in respectively on bottom plate, cooling water circulation passage is internally formed as three-decker bottom plate, but not limited to this, the cooling
Water circulation channel may not be is formed as three-decker, and is created as double-layer structure or cross one another is more than three layers
Vertical structure, as long as connection cooling water hole and cooling jacket and the function that can be connected with cooling water cavity can be reached.
In addition, in above-mentioned embodiment, cooling water pipe is installed in the inside of cooling water circulation passage, but
This is not limited to, the cooling water pipe can not also be installed, but the cooling water for making coolant be formed directed along base plate interior
Hole circulation canal flowing, is equally reached the effect at the position corresponding with exhaust valve of above-mentioned protection cylinder head body, but
It is that above-mentioned cooling water pipe is installed according to the structure in embodiment, inside of the coolant directly in bottom plate can be avoided
Flowing, is advantageous to slow down erosion of the coolant to bottom plate.
In addition, in above-mentioned embodiment, the bottom of cylinder head body is provided with bottom plate, in the lower section of bottom plate
It is provided with the sealing convex shoulder of ring-type, but not limited to this, bottom plate can also be only set, and the bottom surface of the bottom plate is plane without setting
Above-mentioned sealing convex shoulder is put, is equally reached the effect that cylinder head is sealed to combustion chamber, still, specific embodiment is set
In the bottom of cylinder head body is provided with bottom plate, be provided with below bottom plate ring-type sealing convex shoulder structure, can
By the sealing convex shoulder strengthen cylinder head body bottom and be arranged on cylinder head body bottom combustion chamber between sealing
Property, make sealing tighter.
In addition, the cylinder head of the present invention, can be combined by the various structures of above-mentioned embodiment, can equally played
Above-mentioned effect.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of cylinder head, suitable for charge inter cooling structure engine, it is characterised in that including cylinder head body, in the gas
Cylinder cap body is internally provided with air intake duct, exhaust duct and the inlet valve connected respectively with the air intake duct and the exhaust duct
And exhaust valve, the position corresponding with the inlet valve of the bottom of the cylinder head body is provided with inlet valve valve seat, in institute
The position corresponding with the exhaust valve for stating the bottom of cylinder head body is provided with exhaust valve valve seat,
Cooling jacket is internally provided with the cylinder head body, multiple cooling waters are offered on the cylinder head body
Hole, each cooling water hole connect to form cooling water circulation passage with the inside of the cooling jacket respectively,
The anti-cavitation pitting sleeve pipe being set on the exhaust valve valve seat is additionally provided with the bottom of the cylinder head body, described anti-
Formed with cooling water cavity between cavitation pitting sleeve pipe and the exhaust valve valve seat, offered on the anti-cavitation pitting sleeve pipe one end with it is described
The through hole that cooling water cavity connects and the other end connects with the cooling water circulation passage.
2. cylinder head according to claim 1, it is characterised in that the through hole is two, and two through holes are with described
The central point of anti-cavitation pitting sleeve pipe is that symmetrical centre symmetrically opens up.
3. cylinder head according to claim 1, it is characterised in that offer and can consolidate in the inside of the cylinder head body
The annular groove of the fixed anti-cavitation pitting sleeve pipe, the anti-cavitation pitting sleeve pipe are arranged in a manner of the inside of the insertion annular groove
The inside of the cylinder head body.
4. cylinder head according to claim 3, it is characterised in that the depth of the annular groove is not less than the anti-cavitation pitting
The casing thickness of sleeve pipe.
5. cylinder head according to claim 1, it is characterised in that the anti-cavitation pitting sleeve pipe is made of stainless steel.
6. cylinder head according to claim 1, it is characterised in that offer and be used on the side of the cylinder head body
Clean the cleaning hole of the cooling water cavity.
7. cylinder head according to claim 1, it is characterised in that the diameter of the valve opening of the inlet valve valve seat is more than described
The diameter of the valve opening of exhaust valve valve seat.
8. cylinder head according to claim 1, it is characterised in that the bottom of the cylinder head body is provided with bottom plate,
Each cooling water hole is opened on the bottom plate respectively, the cooling water circulation passage the bottom plate be internally formed for
Three-decker.
9. cylinder head according to claim 8, it is characterised in that be provided with the inside of the cooling water circulation passage cold
But jacket pipe.
10. cylinder head according to claim 1, it is characterised in that the bottom of the cylinder head body is provided with bottom plate,
The sealing convex shoulder of ring-type is provided with below the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820343.6A CN107461271B (en) | 2017-09-12 | 2017-09-12 | Cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820343.6A CN107461271B (en) | 2017-09-12 | 2017-09-12 | Cylinder head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107461271A true CN107461271A (en) | 2017-12-12 |
| CN107461271B CN107461271B (en) | 2023-03-24 |
Family
ID=60551443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710820343.6A Active CN107461271B (en) | 2017-09-12 | 2017-09-12 | Cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461271B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352428A (en) * | 2021-12-16 | 2022-04-15 | 中国船舶重工集团公司第七一一研究所 | Split type cylinder head and cylinder |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD276898A1 (en) * | 1988-11-11 | 1990-03-14 | Schwermasch Liebknecht Veb K | VALVE SEAT MOUNTING ON INTERNAL COMBUSTION ENGINES |
| DD287078A5 (en) * | 1989-08-14 | 1991-02-14 | Veb Schwermaschinenbau "Karl Liebknecht" Magdeburg,De | COOLED VALVE SEAT RING FOR INTERNAL COMBUSTION ENGINES |
| CN2148185Y (en) * | 1992-12-07 | 1993-12-01 | 四川红江机械厂 | Needle valve type constant pressure fuel injection valve |
| EP0947277A2 (en) * | 1998-03-31 | 1999-10-06 | Mazda Motor Corporation | Joined metal member and method of joining said member |
| JPH11285846A (en) * | 1998-03-31 | 1999-10-19 | Mazda Motor Corp | Joining method of metallic member |
| JPH11285845A (en) * | 1998-03-31 | 1999-10-19 | Mazda Motor Corp | Method and device for joining metallic member |
| JP2003139018A (en) * | 2001-10-23 | 2003-05-14 | Robert Bosch Gmbh | Solenoid valve for controlling injection valve |
| CN101298853A (en) * | 2008-06-06 | 2008-11-05 | 上海港复兴船务公司 | Diesel split type cylinder cap |
| CN101627205A (en) * | 2007-03-06 | 2010-01-13 | 卡特彼勒公司 | The cavitation erosion of valve member reduces strategy and utilizes this tactful fuel injector |
| CN101956606A (en) * | 2010-09-05 | 2011-01-26 | 张显荣 | Radial turbine engine |
| CN102305142A (en) * | 2011-09-19 | 2012-01-04 | 潍柴动力股份有限公司 | Engine and anti-cavitation wet-type cylinder jacket thereof |
| CN202900503U (en) * | 2012-12-04 | 2013-04-24 | 浙江丽威油泵油嘴有限公司 | Novel aperture atomizer for diesel engine |
| WO2013098183A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Design of a valve closing body |
| CN103993973A (en) * | 2014-04-18 | 2014-08-20 | 中国北方发动机研究所(天津) | Air cylinder cover water cavity structure with exhaust valve seat ring cooling water channel |
| CN204783406U (en) * | 2015-07-17 | 2015-11-18 | 博世汽车柴油系统有限公司 | Diesel engine high pressure common rail's sprayer |
| CN105240146A (en) * | 2015-11-02 | 2016-01-13 | 重庆金花玻璃钢有限公司 | Engine cylinder cover capable of enhancing valve cooling effect |
| CN207454118U (en) * | 2017-09-12 | 2018-06-05 | 重庆潍柴发动机有限公司 | Cylinder head |
-
2017
- 2017-09-12 CN CN201710820343.6A patent/CN107461271B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD276898A1 (en) * | 1988-11-11 | 1990-03-14 | Schwermasch Liebknecht Veb K | VALVE SEAT MOUNTING ON INTERNAL COMBUSTION ENGINES |
| DD287078A5 (en) * | 1989-08-14 | 1991-02-14 | Veb Schwermaschinenbau "Karl Liebknecht" Magdeburg,De | COOLED VALVE SEAT RING FOR INTERNAL COMBUSTION ENGINES |
| CN2148185Y (en) * | 1992-12-07 | 1993-12-01 | 四川红江机械厂 | Needle valve type constant pressure fuel injection valve |
| EP0947277A2 (en) * | 1998-03-31 | 1999-10-06 | Mazda Motor Corporation | Joined metal member and method of joining said member |
| JPH11285846A (en) * | 1998-03-31 | 1999-10-19 | Mazda Motor Corp | Joining method of metallic member |
| JPH11285845A (en) * | 1998-03-31 | 1999-10-19 | Mazda Motor Corp | Method and device for joining metallic member |
| JP2003139018A (en) * | 2001-10-23 | 2003-05-14 | Robert Bosch Gmbh | Solenoid valve for controlling injection valve |
| CN101627205A (en) * | 2007-03-06 | 2010-01-13 | 卡特彼勒公司 | The cavitation erosion of valve member reduces strategy and utilizes this tactful fuel injector |
| CN101298853A (en) * | 2008-06-06 | 2008-11-05 | 上海港复兴船务公司 | Diesel split type cylinder cap |
| CN101956606A (en) * | 2010-09-05 | 2011-01-26 | 张显荣 | Radial turbine engine |
| CN102305142A (en) * | 2011-09-19 | 2012-01-04 | 潍柴动力股份有限公司 | Engine and anti-cavitation wet-type cylinder jacket thereof |
| WO2013098183A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Design of a valve closing body |
| CN202900503U (en) * | 2012-12-04 | 2013-04-24 | 浙江丽威油泵油嘴有限公司 | Novel aperture atomizer for diesel engine |
| CN103993973A (en) * | 2014-04-18 | 2014-08-20 | 中国北方发动机研究所(天津) | Air cylinder cover water cavity structure with exhaust valve seat ring cooling water channel |
| CN204783406U (en) * | 2015-07-17 | 2015-11-18 | 博世汽车柴油系统有限公司 | Diesel engine high pressure common rail's sprayer |
| CN105240146A (en) * | 2015-11-02 | 2016-01-13 | 重庆金花玻璃钢有限公司 | Engine cylinder cover capable of enhancing valve cooling effect |
| CN207454118U (en) * | 2017-09-12 | 2018-06-05 | 重庆潍柴发动机有限公司 | Cylinder head |
Non-Patent Citations (1)
| Title |
|---|
| 李树勋等: "超(超)临界蒸汽疏水阀内部空化模拟", 《四川大学学报(工程科学版)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352428A (en) * | 2021-12-16 | 2022-04-15 | 中国船舶重工集团公司第七一一研究所 | Split type cylinder head and cylinder |
| CN114352428B (en) * | 2021-12-16 | 2022-11-08 | 中国船舶集团有限公司第七一一研究所 | Split type cylinder head and cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107461271B (en) | 2023-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103867332B (en) | A kind of water-cooled engine and cylinder head thereof | |
| CN103485921A (en) | Uniform cooling double-layer-water-cavity cylinder cover for highly-intensified diesel engine | |
| CN110284990A (en) | Cylinder head cooling jacket and engine | |
| CN201963636U (en) | Water cooling and air cooling hydraulic cylinder | |
| CN104895659A (en) | Water-cooled exhaust manifold of engine | |
| CN102128186A (en) | Water and air double-cooled hydraulic cylinder | |
| CN105221290A (en) | Double-deck annular cooling oil duct piston structure | |
| CN101121440A (en) | Exhaust pipe for motorboat engine | |
| CN107461271A (en) | Cylinder head | |
| CN109854403B (en) | Cylinder head and engine with same | |
| CN207454118U (en) | Cylinder head | |
| CN109931143A (en) | A kind of engine and its engine cooling apparatus | |
| CN206571589U (en) | A kind of novel diesel engine cylinder cover | |
| JP2017008778A (en) | Internal combustion engine | |
| CN106523177A (en) | Novel cylinder cover of diesel engine | |
| CN207229253U (en) | The jacket structure for water of engine cylinder block | |
| CN209925110U (en) | Four-valve engine cylinder cover cooling structure with local necking of exhaust passage | |
| CN202832822U (en) | Diesel engine cylinder cover | |
| CN214145688U (en) | Cylinder cover of engine | |
| CN215860523U (en) | Cylinder head | |
| CN213235244U (en) | Cylinder head, cylinder gasket and engine with same | |
| CN111997727A (en) | Water-cooling exhaust pipe | |
| CN114991982B (en) | High-quality high-cooling integrated cylinder cover and engine | |
| CN215890177U (en) | Engine cooling passage | |
| CN212985385U (en) | Insert structure for nose bridge area of cylinder cover of diesel 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 |