CN205154286U - Two -chamber is towards sodium valve with combustion chamber - Google Patents
Two -chamber is towards sodium valve with combustion chamber Download PDFInfo
- Publication number
- CN205154286U CN205154286U CN201520892091.4U CN201520892091U CN205154286U CN 205154286 U CN205154286 U CN 205154286U CN 201520892091 U CN201520892091 U CN 201520892091U CN 205154286 U CN205154286 U CN 205154286U
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- China
- Prior art keywords
- chamber
- valve
- sodium
- head
- towards
- 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.)
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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 two -chamber is towards sodium valve with combustion chamber, the valve stem is inside to be equipped with cylindrical pole portion towards sodium chamber along its axial, be equipped with in the valve head with pole portion towards the head of the coaxial intercommunication in sodium chamber towards the sodium chamber and this head towards the sodium chamber for the toper cavity just the head is towards the sodium intracavity directly by last down crescent, pole portion is towards the sodium intracavity along radially being equipped with the baffle and forming the annular channel with this pole portion towards sodium chamber partition, the head is towards the lower terminal surface in the sodium chamber ball face for the downward bulge, pole portion packs towards the sodium intracavity with the head towards the sodium chamber has sodium, and what this two -chamber is towards sodium valve with combustion chamber 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 dual-chamber washing sodium valve with firing chamber.
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 dual-chamber washing sodium valve of firing chamber uniformly.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, and providing a kind of can walk the heat conduction that air valve cervix and valve end surface center gather preferably, thus make exhaust valve heat radiation have the dual-chamber washing sodium valve of firing chamber uniformly.
The dual-chamber washing sodium valve with firing chamber of the present utility model, comprise valve head and valve stem, described valve stem inside is axially arranged with cylindrical stem along it and rushes sodium chamber, be provided with the head rushing sodium chamber coaxial communication with bar portion in described valve head and rush sodium chamber and this head rushes sodium chamber is cone-shaped cavity and described head rushes sodium chamber internal diameter increases gradually from top to bottom, described bar portion rushes in sodium chamber to be radially provided with dividing plate and this bar portion is rushed sodium chamber and is separated to form ring runner, the lower end surface that described head rushes sodium chamber is the sphere protruded downwards, described bar portion rushes sodium chamber and head and rushes in sodium chamber and be filled with sodium, described valve head bottom surface is provided with the firing chamber that axial section is " ω " type.
Further, 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;
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 of the valve guide bushing that the dual-chamber washing sodium valve with this with firing chamber coordinates is S
1, this dual-chamber washing sodium valve with firing chamber 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 bar portion rushes upper end, sodium chamber and extends to valve end and to be communicated with outward with valve stem and valve stem outer end is fixedly connected with valve plug screw by screw thread, and described bar portion is rushed sodium chamber and sealed by this valve plug screw;
Further, described valve plug screw is circumferentially provided with rod slot and rod slot diameter is less than valve collet internal diameter.
The beneficial effects of the utility model are: the dual-chamber washing sodium valve with firing chamber of the present utility model, the bar portion ring runner rushed in sodium chamber is conducive to circulating of guide wire sodium, the exchange heat speed of sodium metal in cavity and valve head can be strengthened, the lower end surface that head rushes sodium chamber is the Surface of Sphere protruded downwards, compare existing employing plane as the valve rushing sodium chamber both ends of the surface, rushing under the identical condition of sodium chamber diameter, the heat exchange area rushing sodium chamber and valve head of this structural type of the utility model is larger, the exchange heat speed of sodium metal in cavity and valve head can be strengthened, on the other hand, cavity can reduce the distance of valve head end face center and cavity towards the hemisphere face of valve head side, improves the heat radiation of valve head end face center region, make valve integral heat sink even with this, on the other hand, 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, the firing chamber of " ω " type can produce eddy current, and then accelerates the mixing velocity of fuel oil-gas, makes 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;
Fig. 3 is the sectional view at B 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 dual-chamber washing sodium valve with firing chamber in the present embodiment, comprise valve head 3 and valve stem, described valve stem inside is axially arranged with cylindrical stem along it and rushes sodium chamber 9, be provided with the head rushing sodium chamber 9 coaxial communication with bar portion in described valve head 3 and rush sodium chamber 10 and this head rushes sodium chamber 10 for cone-shaped cavity and described head rushes sodium chamber 10 internal diameter increases gradually from top to bottom, described bar portion rushes in sodium chamber 9 to be radially provided with dividing plate 11 and this bar portion is rushed sodium chamber 9 and is separated to form ring runner, the lower end surface that described head rushes sodium chamber 10 is the Surface of Sphere protruded downwards, described bar portion rushes sodium chamber 9 and rushes in sodium chamber 10 with head and be filled with sodium, the lower end surface that head rushes sodium chamber 10 is the Surface of Sphere protruded downwards, compare existing employing plane as the valve rushing sodium chamber both ends of the surface, rushing under the identical condition of sodium chamber diameter, the heat exchange area rushing sodium chamber and valve head 3 of this structural type of the utility model is larger, the exchange heat speed of sodium metal in cavity and valve head 3 can be strengthened, on the other hand, cavity can reduce the distance of valve head 3 end face center and cavity towards the hemisphere face of valve head 3 side, improves the heat radiation of valve head 3 end face center region, make valve integral heat sink even with this, on the other hand, 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, the firing chamber of " ω " type can produce eddy current simultaneously, and then accelerates the mixing velocity of fuel oil-gas, make burning more abundant, reduce engine consumption.
In the present embodiment, described valve stem surface is provided with chromium coating 6; Described valve head 3 is circumferentially with annular groove along it; Be coated with overlay cladding 2 in described annular groove and overlay cladding 2 surface for conical surface, after arranging and rushing sodium chamber, the structural strength of valve stem will reduce, and the chromium coating 6 on valve stem surface can make up the mechanical strength of valve stem, improves its heat resistance simultaneously; In addition, the overlay cladding 2 that valve head 3 circumference is arranged, this overlay cladding matches with air valve seat ring, effectively can improve the wearing and tearing of valve head 3.
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 of the valve guide bushing that the dual-chamber washing sodium valve having firing chamber with this coordinates is S
1, this dual-chamber washing sodium valve with firing chamber 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 bar portion rushes upper end, sodium chamber 9 and extends to valve end and to be communicated with outward with valve stem and valve stem outer end is fixedly connected with valve plug screw by screw thread, described bar portion is rushed sodium chamber 9 and is sealed by this valve plug screw, the bar portion of this structure rushes sodium chamber and more easily processes, and is also easy on the other hand fill sodium metal.
In the present embodiment, described valve plug screw is circumferentially provided with rod slot 7 and rod slot 7 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 (7)
1. one kind has the dual-chamber washing sodium valve of firing chamber, comprise valve head and valve stem, it is characterized in that: described valve stem inside is axially arranged with cylindrical stem along it and rushes sodium chamber, be provided with the head rushing sodium chamber coaxial communication with bar portion in described valve head and rush sodium chamber and this head rushes sodium chamber is cone-shaped cavity and described head rushes sodium chamber internal diameter increases gradually from top to bottom, described bar portion rushes in sodium chamber to be radially provided with dividing plate and this bar portion is rushed sodium chamber and is separated to form ring runner, the lower end surface that described head rushes sodium chamber is the sphere protruded downwards, described bar portion rushes sodium chamber and head and rushes in sodium chamber and be filled with sodium, described valve head bottom surface is provided with the firing chamber that axial section is " ω " type.
2. the dual-chamber washing sodium valve with firing chamber according to claim 1, is characterized in that: 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.
3. the dual-chamber washing sodium valve with firing chamber according to claim 2, is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
4. the dual-chamber washing sodium valve with firing chamber according to claim 3, 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.
5. the dual-chamber washing sodium valve with firing chamber according to claim 4, is characterized in that: the length of the valve guide bushing that the dual-chamber washing sodium valve having firing chamber with this coordinates is S
1, this dual-chamber washing sodium valve with firing chamber 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.
6. the dual-chamber washing sodium valve with firing chamber according to claim 5, it is characterized in that: described bar portion rushes upper end, sodium chamber and extends to valve end and to be communicated with outward with valve stem and valve stem outer end is fixedly connected with valve plug screw by screw thread, and described bar portion is rushed sodium chamber and sealed by this valve plug screw.
7. the dual-chamber washing sodium valve with firing chamber according to claim 6, is characterized in that: described valve plug screw is circumferentially provided with rod slot and rod slot diameter is less than valve collet internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520892091.4U CN205154286U (en) | 2015-11-10 | 2015-11-10 | Two -chamber is towards sodium valve with combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520892091.4U CN205154286U (en) | 2015-11-10 | 2015-11-10 | Two -chamber is towards sodium valve with combustion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154286U true CN205154286U (en) | 2016-04-13 |
Family
ID=55689993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520892091.4U Expired - Fee Related CN205154286U (en) | 2015-11-10 | 2015-11-10 | Two -chamber is towards sodium valve with combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842406A (en) * | 2016-09-20 | 2018-03-27 | 曼柴油机和涡轮机欧洲股份公司 | Valve body, gas exchange valve and the internal combustion engine of gas exchange valve |
-
2015
- 2015-11-10 CN CN201520892091.4U patent/CN205154286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842406A (en) * | 2016-09-20 | 2018-03-27 | 曼柴油机和涡轮机欧洲股份公司 | Valve body, gas exchange valve and the internal combustion engine of gas exchange valve |
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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 |