CN110360020A - A kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring integrated formed structure - Google Patents
A kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring integrated formed structure Download PDFInfo
- Publication number
- CN110360020A CN110360020A CN201910780358.3A CN201910780358A CN110360020A CN 110360020 A CN110360020 A CN 110360020A CN 201910780358 A CN201910780358 A CN 201910780358A CN 110360020 A CN110360020 A CN 110360020A
- Authority
- CN
- China
- Prior art keywords
- bore
- cylinder cover
- main body
- intake
- spark plug
- 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.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003345 natural gas Substances 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 36
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 26
- 239000010439 graphite Substances 0.000 claims abstract description 26
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 238000007531 graphite casting Methods 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000003502 gasoline Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
-
- 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
-
- 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
-
- 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
-
- 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
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
-
- 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
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- 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
- F02F2001/244—Arrangement of valve stems in cylinder heads
Abstract
The invention discloses a kind of Cylinder of Natural Gas Engine lids and intake and exhaust seat ring integrated formed structure, it is related to engine cylinder cover technical field, is separate structure to solve intake and exhaust seat ring and the cylinder body of existing Cylinder of Natural Gas Engine lid, if magnitude of interference selection is improper, the problem of falling off, cause the accident.Aluminium alloy casting shell is provided on the outer wall of the engine cylinder cover main body, the upper surface of the engine cylinder cover main body is provided with apopore, and there are two apopore settings, the middle position of the engine cylinder cover body upper surface is provided with stepped spark plug installation bore, the outside of the step type spark plug installation bore is provided with valve guide bushing bore, and there are four the settings of valve guide bushing bore, the two sides of the step type spark plug installation bore are provided with lateral arm guide pole press mounting hole, the lower surface of the engine cylinder cover main body is provided with high strength graphite cast iron cylinder cover, and high strength graphite cast iron cylinder cover and engine cylinder cover main body are welded to connect.
Description
Technical field
The present invention relates to engine cylinder cover technical field, specially a kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring one
Forming structure.
Background technique
Cylinder cap is mounted on the upper surface of cylinder body, from top seal cylinder and constitutes combustion chamber.It is often and high-temperature high-pressure fuel gas
It is in contact, therefore bears very big thermic load and mechanical load.Cooling jacket, cylinder cap are formed with inside the cylinder head of water-cooled engine
The cooling water hole of lower end surface is communicated with the cooling water hole of cylinder body, and the high-temperature parts such as combustion chamber are cooled down using recirculated water.On cylinder cap
It is also equipped with Valve seat, valve guide hole, for being installed into, exhaust valve, there are also inlet channel and exhaust passages etc..Gasoline
The hole of installation spark plug is machined in the cylinder head of machine.Cam shaft is also machined in the cylinder head of cammer
Bearing bore, to install camshaft.Cylinder head generally uses gray cast iron or alloy cast iron to cast, and the thermal conductivity of aluminium alloy is good, favorably
In raising compression ratio.Cylinder head is the component part of combustion chamber, and the shape of combustion chamber is very big to the work influence of engine, due to
Gasoline engine is different with the combustion system of diesel engine, and the part difference that combustion chamber is formed in cylinder head is larger.
But the intake and exhaust seat ring of existing Cylinder of Natural Gas Engine lid and cylinder body are separate structure, if magnitude of interference selection is not
When, it may occur that it falls off, causes the accident；Therefore, it is unsatisfactory for existing demand, we have proposed a kind of Cylinder of Natural Gas Engine to this
Lid and intake and exhaust seat ring integrated formed structure.
Summary of the invention
The purpose of the present invention is to provide a kind of Cylinder of Natural Gas Engine lids and intake and exhaust seat ring integrated formed structure, with solution
The intake and exhaust seat ring and cylinder body of existing Cylinder of Natural Gas Engine lid certainly mentioned above in the background art are separate structure, if interference
Amount selection is improper, it may occur that the problem of falling off, causing the accident.
To achieve the above object, the invention provides the following technical scheme: a kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat
Integrated formed structure, including engine cylinder cover main body are enclosed, aluminium alloy casting shell is provided on the outer wall of the engine cylinder cover main body
Body, the upper surface of the engine cylinder cover main body are provided with apopore, and there are two apopore settings, the engine cylinder cover master
The middle position of body upper surface is provided with stepped spark plug installation bore, the outside of the step type spark plug installation bore
It is provided with valve guide bushing bore, and there are four the settings of valve guide bushing bore, the two sides of the step type spark plug installation bore are equal
It is provided with lateral arm guide pole press mounting hole, the lower surface of the engine cylinder cover main body is provided with high strength graphite cast iron cylinder cover, and
High strength graphite cast iron cylinder cover and engine cylinder cover main body are welded to connect, the two sides of the engine cylinder cover main body and front end face
On to be provided with sand cleaning hole stifled, and sand cleaning hole is stifled is provided with 11, the side setting in engine cylinder cover body front end face
There is indicator valve that bore is installed, the side in engine cylinder cover body rear face is provided with inlet channel, the inlet channel
Side is provided with exhaust passage.
Preferably, the junction of the high strength graphite cast iron cylinder cover and engine cylinder cover main body is provided with annular snap
Slot, and annular slot is structure as a whole with engine cylinder cover main body, the inside of the annular slot is equipped with copper facing mild steel ring.
Preferably, the outside of the annular slot is provided with inlet opening, and inlet opening is provided with 12.
Preferably, the middle position of the high strength graphite cast iron cylinder cover is provided with lower spark plug installation bore, and
Lower spark plug installation bore is connected with stepped spark plug installation bore, and the side of the lower spark plug installation bore is provided with
Inlet valve bore, and inlet valve bore is provided with two, the other side of the lower spark plug installation bore is provided with exhaust valve seat
Hole, and exhaust valve bore is provided with two, is provided with gap bridge mechanism between the inlet valve bore and exhaust valve bore, it is described into
The inside of valve-seat bore and exhaust valve bore is provided with intake and exhaust seat ring, and intake and exhaust seat ring and high strength graphite cast iron cylinder
Set is structure as a whole.
Preferably, indicator valve through-hole is provided with below the exhaust valve bore.
Preferably, the inside of the inlet channel is equipped with filter screen, and the welding of the inner wall of filter screen and inlet channel connects
It connects.
Preferably, be mounted on air inlet-outlet pipe mounting flange on the outer wall of the inlet channel and exhaust passage, it is described into
Screw hole is provided on exhaust pipe mounting flange.
Preferably, sealing ring fixing lug boss is provided on the front end face of the air inlet-outlet pipe mounting flange, and sealing ring is solid
Determine boss to be structure as a whole with air inlet-outlet pipe mounting flange.
Preferably, the inside of the valve guide bushing bore is equipped with spark plug air inlet pipe, and spark plug air inlet pipe and ladder
Type spark plug installation bore is connected.
Preferably, the outer wall surrounding of the engine cylinder cover main body is provided with bolt boss, and bolt boss is provided with
Six.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention is by being arranged one inside the inlet valve bore and exhaust valve bore of high strength graphite cast iron cylinder cover
Body formed intake and exhaust seat ring, intake and exhaust seat ring have certain wearability, can guarantee the leakproofness of valve, compared to split type
Intake and exhaust seat ring, it is improper to select because of magnitude of interference, the phenomenon that falling off, improves the safety of cylinder operation.
2, by the way that main material of the aluminium alloy as cylinder cap is arranged, cylinder cap good heat conductivity made of aluminium alloy is conducive to
The case where compression ratio improves, and can reduce engine blast generation, and capacity usage ratio can be improved, but because its rigidity is lower, easily produce
Change shape, so high strength graphite cast iron is selected in the cylinder jacket part of cylinder cap, welds with aluminum alloy casing, high strength graphite cast iron
Rigidity is high, can effectively improve its mechanical strength, avoid the weak parts such as gap bridge mechanism cracked, the two synergistic effect,
Mechanical strength has been taken into account while ensure that heat dissipation performance.
3, by the way that sealing ring fixing lug boss, and sealing ring fixing lug boss are arranged on the front end face of air inlet-outlet pipe mounting flange
It is structure as a whole with exhaust pipe mounting flange, sealing ring fixing lug boss is used to be interference fitted with rubber seal, to improve method
Leakproofness when orchid connect with air inlet-outlet pipe avoids gas from leaking from junction.
4, by installing filter screen in the inside of inlet channel, and the inner wall of filter screen and inlet channel is welded to connect, mistake
Strainer can filter out the granule foreign in gas, avoid it from entering in cylinder, damage.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is present invention looks up structural representation of the invention；
Fig. 3 is forward sight structural schematic diagram of the invention；
Fig. 4 is backsight structural representation of the invention；
Fig. 5 is side structure schematic diagram of the invention；
Fig. 6 is high strength graphite cast iron cylinder cover partial structural diagram of the invention；
In figure: 1, engine cylinder cover main body；2, aluminium alloy casts shell；3, bolt boss；4, stepped spark plug mounting base
Hole；5, valve guide bushing bore；6, spark plug air inlet pipe；7, lateral arm guide pole press mounting hole；8, apopore；9, high strength graphite cast iron gas
Cylinder sleeve；901, lower spark plug installs bore；902, inlet valve bore；903, exhaust valve bore；904, intake and exhaust seat ring；905, mistake
Bridge mechanism；906, indicator valve through-hole；10, annular slot；11, copper facing mild steel ring；12, inlet opening；13, sand cleaning hole is stifled；14, show function
Valve housing hole；15, inlet channel；16, exhaust passage；17, filter screen；18, air inlet-outlet pipe mounting flange；19, sealing ring is solid
Determine boss；20, screw hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Fig. 1-6 is please referred to, a kind of embodiment provided by the invention: a kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring one
Forming structure, including engine cylinder cover main body 1 are provided with aluminium alloy casting shell 2, aluminium on the outer wall of engine cylinder cover main body 1
The case where alloy casts 2 good heat conductivity of shell, is conducive to compression ratio raising, can reduce engine blast generation, engine cylinder cover
The upper surface of main body 1 is provided with apopore 8, and there are two the settings of apopore 8, the interposition of 1 upper surface of engine cylinder cover main body
The place of setting is provided with stepped spark plug installation bore 4, and stepped spark plug installation bore 4 is for installing spark plug, stepped fire
The outside of Hua Sai installation bore 4 is provided with valve guide bushing bore 5, and there are four the settings of valve guide bushing bore 5, valve guide bushing bore
5 for installing valve guide bushing, and the two sides of stepped spark plug installation bore 4 are provided with lateral arm guide pole press mounting hole 7, lateral arm guide pole
For press mounting hole 7 for installing lateral arm guide pole, the lower surface of engine cylinder cover main body 1 is provided with high strength graphite cast iron cylinder cover 9, and
High strength graphite cast iron cylinder cover 9 and engine cylinder cover main body 1 are welded to connect, and 9 rigidity of high strength graphite cast iron cylinder cover is high, energy
The mechanical strength of cylinder base is enough effectively improved, it is stifled that sand cleaning hole is provided on the two sides of engine cylinder cover main body 1 and front end face
13, and sand cleaning hole stifled 13 is provided with 11, the side of 1 front end face of engine cylinder cover main body is provided with indicator valve installation bore
14, indicator valve installation bore 14 is for installing indicator valve, compression pressure when detecting work in cylinder, and when pressure is larger
Explosion pressure, the side of 1 rear end face of engine cylinder cover main body are provided with inlet channel 15, and the side of inlet channel 15 is provided with row
Gas channel 16, inlet channel 15 and exhaust passage 16 can be connect with admission line and exhaust pipe respectively.
Further, the junction of high strength graphite cast iron cylinder cover 9 and engine cylinder cover main body 1 is provided with annular slot
10, and annular slot 10 is structure as a whole with engine cylinder cover main body 1, the inside of annular slot 10 is equipped with copper facing mild steel ring
11, copper facing mild steel ring 11 can do compression ratio adjustment and become, and transmit the pre- police strength of installation and sealing effect.
Further, the outside of annular slot 10 is provided with inlet opening 12, and inlet opening 12 is provided with 12, inlet opening 12
It is connected by annular cavity with apopore 8, recirculated water can be imported, have the function that cool, avoid internal element mistake
Heat, the case where leading to engine cylinder body blast generation.
Further, the middle position of high strength graphite cast iron cylinder cover 9 is provided with lower spark plug installation bore 901, and
Lower spark plug installation bore 901 is connected with stepped spark plug installation bore 4, and the side of lower spark plug installation bore 901 is set
It is equipped with inlet valve bore 902, and there are two the settings of inlet valve bore 902, the other side of lower spark plug installation bore 901 is provided with
Exhaust valve bore 903, and there are two the settings of exhaust valve bore 903, it is arranged between inlet valve bore 902 and exhaust valve bore 903
There is a gap bridge mechanism 905, the inside of inlet valve bore 902 and exhaust valve bore 903 is provided with intake and exhaust seat ring 904, and into row
Gas seat ring 904 is structure as a whole with high strength graphite cast iron cylinder cover 9, and cylinder cap generally aluminium alloy is cast, although thermal conductivity is excellent
Show, but rigidity is low, is also easy to produce deformation, so cylinder jacket part is changed to high strength graphite cast iron, and welds with aluminum alloy casing
It connects, its mechanical strength can be effectively improved, avoid the weak parts such as gap bridge mechanism 905 cracked.
Further, the lower section of exhaust valve bore 903 is provided with indicator valve through-hole 906, and indicator valve through-hole 906 and indicator valve are pacified
The indicator valve installed in dress bore 14 communicates, compression pressure when can measure work in cylinder, and breaks out when pressure is larger
Pressure, and when uncoupling, the ponding in cylinder is discharged.
Further, the inside of inlet channel 15 is equipped with filter screen 17, and the inner wall of filter screen 17 and inlet channel 15 welds
It connects in succession, filter screen 17 can filter out the impurity in gas, avoid it from entering in cylinder, damage.
Further, air inlet-outlet pipe mounting flange 18 is mounted on the outer wall of inlet channel 15 and exhaust passage 16, into row
Screw hole 20, inlet channel 15 and exhaust passage 16 is provided on tracheae mounting flange 18 to distinguish by air inlet-outlet pipe mounting flange 18
It is connect with air inlet pipe and gas exhaust tube flange, it is easy for installation.
Further, sealing ring fixing lug boss 19 is provided on the front end face of air inlet-outlet pipe mounting flange 18, and sealing ring is solid
Determine boss 19 to be structure as a whole with air inlet-outlet pipe mounting flange 18, sealing ring fixing lug boss 19 with rubber seal interference for matching
It closes, to improve leakproofness when flange is connect with air inlet-outlet pipe, gas is avoided to leak from junction.
Further, the inside of valve guide bushing bore 5 is equipped with spark plug air inlet pipe 6, and spark plug air inlet pipe 6 and step type
Spark plug installation bore 4 is connected, and spark plug can put the gaseous mixture in gas cylinder, and generate explosion, and it is defeated to provide engine power
The required energy out.
Further, the outer wall surrounding of engine cylinder cover main body 1 is provided with bolt boss 3, and bolt boss 3 is provided with six
A, engine cylinder cover main body 1 is threadedly coupled with the cooperation of bolt with cylinder body by bolt boss 3.
Working principle: in use, engine cylinder cover main body 1 is installed at the top of cylinder body by bolt boss 3 and bolt, make
It collectively constitutes closed cylinder operation space with piston, cylinder sleeve, need to be by cylinder-pressing in the correct position of body when installation
On, enable piston proper motion, is later installed on the various attachmentes of gasoline engine, such as spark plug, indicator valve, lateral arm guide pole
Stepped spark plug installs bore 4, indicator valve installs bore 14, at lateral arm guide pole press mounting hole 7, and attachment is after the installation is completed
Air inlet-outlet pipe and cooling water pipe, 15 He of inlet channel are arranged at inlet channel 15, exhaust passage 16, inlet opening 12, apopore 8
Exhaust passage 16 is connect by air inlet-outlet pipe mounting flange 18 with pipeline, and the junction of flange and air inlet-outlet pipe is provided with rubber
Sealing ring can effectively improve the leakproofness of junction, and gas is avoided to leak from connection gap, after the completion of pipe arrangement
Igniting starting engine, when engine is run, when the indicator valve in indicator valve installation bore 14 can measure work in cylinder
Compression pressure, and the explosion pressure when pressure is larger, and when uncoupling, the ponding in cylinder is discharged, cylinder body integrally uses aluminium alloy
The case where casting, cylinder cap good heat conductivity made of aluminium alloy, being conducive to compression ratio raising, engine blast can be reduced generation,
And capacity usage ratio can be improved, but because its rigidity is lower, be also easy to produce deformation, so the cylinder jacket part of cylinder cap is high strength graphite
Cast iron is made, and welds with aluminum alloy casing, and high strength graphite cast iron rigidity is high, can effectively improve its mechanical strength, avoid
The weak parts such as bridge mechanism 905 are cracked, inlet valve bore 902 and exhaust valve seat on high strength graphite cast iron cylinder cover 9
Integrally formed intake and exhaust seat ring 904 is provided with inside hole 903, intake and exhaust seat ring 904 can guarantee the leakproofness of valve, phase
Than split type intake and exhaust seat ring 904, the phenomenon that will not falling off.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring integrated formed structure, including engine cylinder cover main body (1), special
Sign is: aluminium alloy casting shell (2), the engine cylinder cover main body are provided on the outer wall of the engine cylinder cover main body (1)
(1) upper surface is provided with apopore (8), and there are two apopore (8) settings, engine cylinder cover main body (1) upper surface
Middle position be provided with stepped spark plug installation bore (4), the outside of step type spark plug installation bore (4) is set
It is equipped with valve guide bushing bore (5), and there are four valve guide bushing bore (5) settings, step type spark plug installation bore (4)
Two sides are provided with lateral arm guide pole press mounting hole (7), and the lower surface of the engine cylinder cover main body (1) is provided with high strength graphite casting
Iron cylinder jacket (9), and high strength graphite cast iron cylinder cover (9) and engine cylinder cover main body (1) are welded to connect, the engine cylinder
It is provided with sand cleaning hole on the two sides of lid main body (1) and front end face and blocks up (13), and sand cleaning hole blocks up (13) and is provided with 11, it is described
The side of engine cylinder cover main body (1) front end face is provided with indicator valve and installs bore (14), after the engine cylinder cover main body (1)
The side of end face is provided with inlet channel (15), and the side of the inlet channel (15) is provided with exhaust passage (16).
2. a kind of Cylinder of Natural Gas Engine lid according to claim 1 and intake and exhaust seat ring integrated formed structure, feature
Be: the junction of the high strength graphite cast iron cylinder cover (9) and engine cylinder cover main body (1) is provided with annular slot
(10), and annular slot (10) is structure as a whole with engine cylinder cover main body (1), and the inside of the annular slot (10) is equipped with
Copper facing mild steel ring (11).
3. a kind of Cylinder of Natural Gas Engine lid according to claim 2 and intake and exhaust seat ring integrated formed structure, feature
Be: the outside of the annular slot (10) is provided with inlet opening (12), and inlet opening (12) are provided with 12.
4. a kind of Cylinder of Natural Gas Engine lid according to claim 1 and intake and exhaust seat ring integrated formed structure, feature
Be: the middle position of the high strength graphite cast iron cylinder cover (9) is provided with lower spark plug and installs bore (901), and under
Spark plug installs bore (901) and is connected with stepped spark plug installation bore (4), lower spark plug installation bore (901)
Side be provided with inlet valve bore (902), and there are two inlet valve bore (902) settings, the lower spark plug installs bore
(901) the other side is provided with exhaust valve bore (903), and there are two exhaust valve bore (903) settings, the inlet valve bore
(902) it is provided between exhaust valve bore (903) gap bridge mechanism (905), the inlet valve bore (902) and exhaust valve bore
(903) inside is provided with intake and exhaust seat ring (904), and intake and exhaust seat ring (904) and high strength graphite cast iron cylinder cover (9)
It is structure as a whole.
5. a kind of Cylinder of Natural Gas Engine lid according to claim 4 and intake and exhaust seat ring integrated formed structure, feature
It is: is provided with indicator valve through-hole (906) below the exhaust valve bore (903).
6. a kind of Cylinder of Natural Gas Engine lid according to claim 1 and intake and exhaust seat ring integrated formed structure, feature
Be: the inside of the inlet channel (15) is equipped with filter screen (17), and the inner wall of filter screen (17) and inlet channel (15)
It is welded to connect.
7. a kind of Cylinder of Natural Gas Engine lid according to claim 1 and intake and exhaust seat ring integrated formed structure, feature
It is: is mounted on air inlet-outlet pipe mounting flange (18) on the outer wall of the inlet channel (15) and exhaust passage (16), it is described
Screw hole (20) are provided on air inlet-outlet pipe mounting flange (18).
8. a kind of Cylinder of Natural Gas Engine lid according to claim 7 and intake and exhaust seat ring integrated formed structure, feature
It is: is provided with sealing ring fixing lug boss (19) on the front end face of the air inlet-outlet pipe mounting flange (18), and sealing ring is fixed
Boss (19) is structure as a whole with air inlet-outlet pipe mounting flange (18).
9. a kind of Cylinder of Natural Gas Engine lid according to claim 1 and intake and exhaust seat ring integrated formed structure, feature
Be: the inside of the valve guide bushing bore (5) is equipped with spark plug air inlet pipe (6), and spark plug air inlet pipe (6) and step type
Spark plug installation bore (4) is connected.
10. a kind of Cylinder of Natural Gas Engine lid according to claim 1 and intake and exhaust seat ring integrated formed structure, feature
Be: the outer wall surrounding of the engine cylinder cover main body (1) is provided with bolt boss (3), and bolt boss (3) is provided with six
It is a.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910780358.3A CN110360020A (en) | 2019-08-22 | 2019-08-22 | A kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring integrated formed structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910780358.3A CN110360020A (en) | 2019-08-22 | 2019-08-22 | A kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring integrated formed structure |
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| CN110360020A true CN110360020A (en) | 2019-10-22 |
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| CN201910780358.3A Pending CN110360020A (en) | 2019-08-22 | 2019-08-22 | A kind of Cylinder of Natural Gas Engine lid and intake and exhaust seat ring integrated formed structure |
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| CN (1) | CN110360020A (en) |
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