CN205154285U - Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel - Google Patents
Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel Download PDFInfo
- Publication number
- CN205154285U CN205154285U CN201520891608.8U CN201520891608U CN205154285U CN 205154285 U CN205154285 U CN 205154285U CN 201520891608 U CN201520891608 U CN 201520891608U CN 205154285 U CN205154285 U CN 205154285U
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- China
- Prior art keywords
- valve
- chamber
- sodium
- head
- branch flow
- 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.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel, including valve head and valve stem, the valve stem is inside be equipped with pole portion towards the sodium chamber and with pole portion is towards sodium chamber intercommunication and follow a plurality of branch fluid channel that the valve stem axial distributes, branch fluid channel's length shortens along the direction of keeping away from the valve head gradually, be equipped with in the valve head with pole portion is towards head towards the sodium chamber of sodium chamber intercommunication, pole portion vigorously has sodium towards sodium chamber and head towards the sodium intracavity, the head up reduces under the internal diameter follow in sodium chamber gradually, the valve stem surface is equipped with chromium -plated layer, the valve head is equipped with the annular along its circumference, the annular interlap has overlay and overlay surface for the circular conical surface, and what this toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel can be better walks valve neck and the heat conduction that valve head end face centre located to gather to it is even to make the valve heat dissipation.
Description
Technical field
The utility model relates to engine component field, specifically a kind of taper dual-chamber washing sodium valve with firing chamber and branch flow passage.
Background technique
Gasoline engine exhaust door in the past adopts solid exhaust valve, and exhaust valve head adopts resistant to elevated temperatures austenite material, and bar portion adopts martensitic material, then forms through processes such as welding, surface treatments.The exhaust valve of this structure, technique only can be used in delivery temperature and is no more than on the natural aspiration petrol engine of 750 DEG C.In supercharged engine, owing to employing compress inlet air technology (specifically having turbosupercharging, engine driven supercharging and two supercharging), make the burning pressure of explosion in cylinder than high during natural aspiration, the temperature in cylinder is also than high during natural aspiration, thus the temperature of exhaust valve raises accordingly.The temperature of Gu Paiqimenchu often exceeds the allowable temperature of material for exhaust valves, thus reduces exhaust valve working life, reduces heat dispersion.In order to address this problem, people are at engine valve stem boring formation one cavity of exhaust valve, the fusing point of sodium metal is 97.81 DEG C, under the prerequisite of rational hollow cavity volume, when valve works, temperature raises very fast, sodium metal becomes liquid state when high temperature from solid-state, move up and down in hollow cavity and constantly wash away valve face and valve stem, the heat load of valve face end is effectively delivered to valve stem, then by the water channel coolant exhaust door of cylinder cap, improve the thermal diffusivity of exhaust valve, the heat load of effective reduction valve face, in addition, the proportion of sodium metal is less, the total quality of valve diminishes, and the rigidity grow of valve, under equal conditions, the amount of deformation of valve is little, but the exhaust valve that existing hollow fills sodium structure has a problem: the heat of air valve cervix and valve end surface center is not easy to be conducted away smoothly, be the position that temperature is assembled, the heat dissipation uniformity of exhaust valve can be affected, reduce the exhaust valve life-span.
Therefore, for overcoming the above problems, need a kind of can being walked by the heat conduction that air valve cervix and valve end surface center gather preferably, thus make head portion that heat radiation have the taper dual-chamber washing sodium valve of firing chamber and branch flow passage uniformly.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, there is provided a kind of can preferably the heat conduction that air valve cervix and valve end surface center gather be walked, thus make exhaust valve heat radiation have the taper dual-chamber washing sodium valve of firing chamber and branch flow passage uniformly.
The taper dual-chamber washing sodium valve with firing chamber and branch flow passage of the present utility model, comprise valve head and valve stem, described valve stem inside is provided with bar portion and rushes sodium chamber and rush sodium chamber with described bar portion and to be communicated with and along multiple branch flow passages of valve stem axial distribution, the length edge of described branch flow passage is shortened gradually away from the direction of valve head; Be provided with in described valve head and rush the head that sodium chamber is communicated with described bar portion and rush sodium chamber, described bar portion rushes sodium chamber and head and rushes sodium chamber Nei Chong and have sodium; The internal diameter that described head rushes sodium chamber reduces from the bottom up gradually; Described valve stem surface is provided with chromium coating; Described valve head is circumferentially with annular groove along it; Overlay cladding is coated with and overlay surface is conical surface in described annular groove; Described valve head bottom surface is provided with the firing chamber that axial section is " ω " type.
Further, the surface of contact of described annular groove and overlay cladding is arc surface;
Further, described valve stem comprises the shaft I and the shaft II that be connected coaxial with shaft I that are fixedly connected with valve head vertically, and shaft I is the solid of rotation that reduces gradually of radius from top to bottom, and shaft II is less than the cylindrical body of shaft I least radius for radius;
Further, the length with this with the valve guide bushing that firing chamber coordinates with the taper dual-chamber washing sodium valve of branch flow passage is S
1, this taper dual-chamber washing sodium valve with firing chamber and branch flow passage is S relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2;
Further, described valve stem is circumferentially provided with annular groove and groover rot diameter is less than valve collet internal diameter on the cylndrical surface on its top.
The beneficial effects of the utility model are: the taper dual-chamber washing sodium valve with firing chamber and branch flow passage of the present utility model, and branch flow passage can increase the heat exchange area of sodium metal and valve stem, can strengthen the exchange heat speed of sodium metal in cavity and valve head; Head in valve head rushes the heat that sodium chamber can absorb head portion that preferably, head rushes sodium chamber and is set to the intensity that up-small and down-big taper can ensure head portion that simultaneously, after arranging and rushing sodium chamber, the structural strength of valve stem will reduce, and the chromium coating on valve stem surface can make up the mechanical strength of valve stem, improve its heat resistance simultaneously; In addition, the overlay cladding that valve head circumference is arranged, this overlay cladding matches with air valve seat ring, effectively can improve the wearing and tearing of valve head, the firing chamber of " ω " type can produce eddy current, and then accelerates the mixing velocity of fuel oil-gas, make burning more abundant, reduce engine consumption; In addition, the distance of rushing sodium chamber and firing chamber can be shortened in the firing chamber of " ω " type, improves radiating effect.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Embodiment
Fig. 1 is structural representation of the present utility model, Fig. 2 is the partial enlarged drawing at A place in Fig. 1, as shown in the figure, the taper dual-chamber washing sodium valve with firing chamber and branch flow passage in the present embodiment, comprise valve head 3 and valve stem, valve stem inside establishes bar portion to rush sodium chamber 9 and rush sodium chamber with described bar portion to be communicated with and along multiple branch flow passages 10 of valve stem axial distribution, the length of described branch flow passage 10 shortens gradually along the direction away from valve head, is provided with to rush the head that sodium chamber is communicated with described bar portion and rush sodium chamber 11 in described valve head; Head rushes sodium chamber 11 and bar portion and rushes punching in sodium chamber 9 and have sodium, and valve stem surface is provided with chromium coating 6, and valve head 3 is circumferentially with annular groove 8 along it, is coated with overlay cladding 2 and overlay cladding 2 surface is conical surface in annular groove 8; Branch flow passage can increase the heat exchange area of sodium metal and valve stem, can strengthen the exchange heat speed of sodium metal in cavity and valve head 3; In addition, the overlay cladding 2 that valve head 3 circumference is arranged, this overlay cladding 2 matches with air valve seat ring, effectively can improve the wearing and tearing of valve head 3, the chromium coating 6 on valve stem surface can improve mechanical strength and the heat resistance of valve, and the firing chamber of " ω " type can produce eddy current, and then accelerates the mixing velocity of fuel oil-gas, make burning more abundant, reduce engine consumption.
In the present embodiment, described annular groove 8 is arc surface with the surface of contact of overlay cladding 2, and this arc surface can increase overlay cladding 2 and the area of contact of valve head 3, ensures that overlay cladding 2 is firmly connected with valve head 3.
In the present embodiment, described valve stem comprises the shaft I 4 and the shaft II 5 that be connected coaxial with shaft I 4 that are fixedly connected with valve head 3 vertically, shaft I 4 is the solid of rotation that reduces gradually of radius from top to bottom, shaft II 5 is less than the cylindrical body of shaft I 4 least radius for radius, " lower end " as herein described refers to towards valve head 3 one end, end opposite is " upper end ", shaft I 4 is the changeover portion between valve head 3 and shaft II 5, this seamlessly transit can avoid valve stem occur stress concentrate, simultaneously due to shaft I 4 at work, its temperature reduces from bottom to up gradually, adopt the shaft I 4 of this structure that it can be made to dispel the heat evenly.
In the present embodiment, the length with this with the valve guide bushing that firing chamber coordinates with the taper dual-chamber washing sodium valve of branch flow passage is S
1, this taper dual-chamber washing sodium valve with firing chamber and branch flow passage is S relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2as shown in Figure 1, dot-dash wire frame region is chromium coating 6, chromium coating 6, for being slidably matched with valve guide bushing, to reduce wearing and tearing, is the utilization ratio of raising chromium coating 6, cost-saving, the axial length of the chromium coating 6 that the present embodiment adopts is length and the valve stroke sum of valve guide bushing, ensures that valve stem is all coated with chromium coating 6 with the surface of contact of valve guide bushing in reciprocating process, thus strengthens its wear resistance.
In the present embodiment, described valve stem is circumferentially provided with rod slot 7 on the cylndrical surface on its top and rod slot 7 end diameter is less than valve collet internal diameter, ensures that valve stem is connected with valve reliable lock.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. one kind has the taper dual-chamber washing sodium valve of firing chamber and branch flow passage, comprise valve head and valve stem, it is characterized in that: described valve stem inside is provided with bar portion and rushes sodium chamber and rush sodium chamber with described bar portion and to be communicated with and along multiple branch flow passages of valve stem axial distribution, the length edge of described branch flow passage is shortened gradually away from the direction of valve head; Be provided with in described valve head and rush the head that sodium chamber is communicated with described bar portion and rush sodium chamber, described bar portion rushes sodium chamber and head and rushes sodium chamber Nei Chong and have sodium; The internal diameter that described head rushes sodium chamber reduces from the bottom up gradually; Described valve stem surface is provided with chromium coating; Described valve head is circumferentially with annular groove along it; Overlay cladding is coated with and overlay surface is conical surface in described annular groove; Described valve head bottom surface is provided with the firing chamber that axial section is " ω " type.
2. the taper dual-chamber washing sodium valve with firing chamber and branch flow passage according to claim 1, is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
3. the taper dual-chamber washing sodium valve with firing chamber and branch flow passage according to claim 2, is characterized in that: described valve stem comprises the shaft I and the shaft II that be connected coaxial with shaft I that are fixedly connected with valve head vertically; Described shaft I is the solid of rotation that reduces gradually of radius from top to bottom; Described shaft II is less than the cylindrical body of shaft I least radius for radius.
4. the taper dual-chamber washing sodium valve with firing chamber and branch flow passage according to claim 3, is characterized in that: the length with this with the valve guide bushing that firing chamber coordinates with the taper dual-chamber washing sodium valve of branch flow passage is S
1, this taper dual-chamber washing sodium valve with firing chamber and branch flow passage is S relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2.
5. the taper dual-chamber washing sodium valve with firing chamber and branch flow passage according to claim 4, is characterized in that: described valve stem is circumferentially provided with rod slot on the cylndrical surface on its top and rod slot diameter is less than valve collet internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520891608.8U CN205154285U (en) | 2015-11-10 | 2015-11-10 | Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520891608.8U CN205154285U (en) | 2015-11-10 | 2015-11-10 | Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154285U true CN205154285U (en) | 2016-04-13 |
Family
ID=55689992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520891608.8U Expired - Fee Related CN205154285U (en) | 2015-11-10 | 2015-11-10 | Toper two -chamber is towards sodium valve with combustion chamber and branch fluid channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154285U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979776A (en) * | 2018-09-21 | 2018-12-11 | 安徽全柴动力股份有限公司 | A kind of rotary-type air valve bar diesel engine spiracle Oil sealing assembly |
| WO2019001780A1 (en) * | 2017-06-29 | 2019-01-03 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized shaft interior geometry, and method for producing same |
-
2015
- 2015-11-10 CN CN201520891608.8U patent/CN205154285U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019001780A1 (en) * | 2017-06-29 | 2019-01-03 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized shaft interior geometry, and method for producing same |
| EP3583301B1 (en) * | 2017-06-29 | 2020-08-05 | Federal-Mogul Valvetrain GmbH | Method for producing a valve body of a cavity valve with optimized shaft interior geometry and cavity valve |
| US11313257B2 (en) | 2017-06-29 | 2022-04-26 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized shaft interior geometry, and method for producing same |
| CN108979776A (en) * | 2018-09-21 | 2018-12-11 | 安徽全柴动力股份有限公司 | A kind of rotary-type air valve bar diesel engine spiracle Oil sealing assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20161110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |