CN105240076A - Cyclic spiral cavity sodium-filled air valve with spiral blade - Google Patents
Cyclic spiral cavity sodium-filled air valve with spiral blade Download PDFInfo
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- CN105240076A CN105240076A CN201510723983.6A CN201510723983A CN105240076A CN 105240076 A CN105240076 A CN 105240076A CN 201510723983 A CN201510723983 A CN 201510723983A CN 105240076 A CN105240076 A CN 105240076A
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- Prior art keywords
- valve
- helical
- air valve
- sodium
- cavity
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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 invention discloses a cyclic spiral cavity sodium-filled air valve with a spiral blade. The spiral blade extending in the axial direction of an air valve head is arranged on the outer side wall of the air valve head. A cyclic spiral flow channel is arranged in an air valve rod and comprises a spiral flow channel extending in the axial direction of the air valve rod and a backflow channel making the front end and the tail end of the spiral flow channel communicated. The spiral flow channel is filled with sodium. A chromium-plated layer is arranged on the surface of the air valve rod. An annular groove is formed in the air valve head circumferentially and covered with a bead welding layer. The surface of the bead welding layer is a conic face. By the adoption of the cyclic spiral cavity sodium-filled air valve with the spiral blade, heat accumulated on the throat of the air valve and the center of the end face of the air valve head can be better conducted away, so that the air valve dissipates heat evenly.
Description
Technical field
The present invention relates to engine component field, specifically a kind of circulating helical cavity with helical blade rushes sodium valve.
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 the circulating helical cavity making head portion that heat radiation have helical blade uniformly rushes sodium valve.
Summary of the invention
In view of this, the object of the invention is to overcome 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 the circulating helical cavity making exhaust valve heat radiation have helical blade uniformly rushes sodium valve.
The circulating helical cavity with helical blade of the present invention rushes sodium valve, comprise valve head and valve stem, described valve head outer side wall is provided with around its axially extended helical blade, valve stem inside is provided with circulation helical runner, described circulation helical runner comprises along the axially extended screw-shaped flow paths of valve stem and the backflow road being communicated with screw-shaped flow paths head and the tail two ends, in described circulation helical runner, punching has sodium, valve stem surface is provided with chromium coating, valve head is circumferentially with annular groove along it, is coated with overlay cladding and overlay surface is conical surface in annular groove;
Further, the surface of contact of described annular groove and overlay cladding is arc surface;
Further, described valve head bottom surface is provided with the circular groove coaxial with valve head;
Further, the length that the circulating helical cavity with this with helical blade rushes the valve guide bushing that sodium valve coordinates is S
1, it is S that this circulating helical cavity with helical blade rushes sodium valve 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 invention has the beneficial effects as follows: the circulating helical cavity with helical blade of the present invention rushes sodium valve, helical blade on valve head drives valve rotation by the airflow scouring helical blade of discharging, both the circulation of gas can have been improved, turn increase the rigidity of valve, the more important thing is the carbon distribution reducing valve and valve seat, thus ensure the sealing that valve is good and longer life-span, screw-shaped flow paths is conducive to guide wire sodium helical flow, compare the existing cylindrical valve rushing sodium chamber, the circulation path of helical flow path of the present invention is longer, backflow road can make sodium metal circulate, the exchange heat speed of sodium metal in cavity and valve head can be strengthened, 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, improves 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.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the schematic diagram of circulation helical runner of the present invention;
Fig. 4 is the structural representation of helical blade of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is the partial enlarged drawing at A place in Fig. 1, as shown in the figure, the circulating helical cavity with helical blade in the present embodiment rushes sodium valve, comprise valve head 3 and valve stem, described valve head 3 outer side wall is provided with around its axially extended helical blade 4, valve stem inside is provided with circulation helical runner 9, described circulation helical runner 9 comprises along the axially extended screw-shaped flow paths of valve stem and the backflow road 10 being communicated with screw-shaped flow paths head and the tail two ends, in circulation helical runner 9, punching has sodium, valve stem surface is provided with chromium coating 6, valve head 3 is circumferentially with annular groove 8 along it, be coated with overlay cladding 2 in annular groove 8 and overlay cladding 2 surface for conical surface, helical flow path 9 in valve stem can guide liquid metal sodium helical flow, compare the valve that existing employing circular cylindrical cavity carries out rushing sodium, the helical flow path 9 of this structural type of the present invention can extend the circulation length of runner, 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, and the chromium coating 6 on valve stem surface can improve mechanical strength and the heat resistance of valve.
In the present embodiment, described annular groove 8 is arc surface 11 with the surface of contact of overlay cladding 2, and this arc surface 11 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 head 3 bottom surface is provided with the circular groove 1 coaxial with valve head 3, and this circular groove 1, as a part for engine chamber, can adjust the compression ratio of motor in certain limit by the size adjusting circular groove 1.
In the present embodiment, the length that the circulating helical cavity having helical blade with this rushes the valve guide bushing that sodium valve coordinates is S
1, it is S that this circulating helical cavity with helical blade rushes sodium valve 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 technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (5)
1. a circulating helical cavity with helical blade rushes sodium valve, comprise valve head and valve stem, it is characterized in that: described valve head outer side wall is provided with around its axially extended helical blade, described valve stem inside is provided with circulation helical runner, and described circulation helical runner comprises along the axially extended screw-shaped flow paths of valve stem and the backflow road being communicated with screw-shaped flow paths head and the tail two ends; In described circulation helical runner, punching has sodium; 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.
2. the circulating helical cavity with helical blade according to claim 1 rushes sodium valve, it is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
3. the circulating helical cavity with helical blade according to claim 2 rushes sodium valve, it is characterized in that: described valve head bottom surface is provided with the circular groove coaxial with valve head.
4. the circulating helical cavity with helical blade according to claim 3 rushes sodium valve, it is characterized in that: the length that the circulating helical cavity having helical blade with this rushes the valve guide bushing that sodium valve coordinates is S
1, it is S that this circulating helical cavity with helical blade rushes sodium valve 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 circulating helical cavity with helical blade according to claim 4 rushes sodium valve, it 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 |
|---|---|---|---|
| CN201510723983.6A CN105240076A (en) | 2015-10-30 | 2015-10-30 | Cyclic spiral cavity sodium-filled air valve with spiral blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723983.6A CN105240076A (en) | 2015-10-30 | 2015-10-30 | Cyclic spiral cavity sodium-filled air valve with spiral blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240076A true CN105240076A (en) | 2016-01-13 |
Family
ID=55037867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510723983.6A Pending CN105240076A (en) | 2015-10-30 | 2015-10-30 | Cyclic spiral cavity sodium-filled air valve with spiral blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3199770A1 (en) * | 2016-01-20 | 2017-08-02 | Mahle International GmbH | Metallic hollow valve for a combustion engine of a utility motor vehicle |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB292093A (en) * | 1927-06-13 | 1928-12-27 | Marius Jean Baptiste Barbarou | Improvements in or relating to internal combustion engines |
| FR817272A (en) * | 1936-05-09 | 1937-08-31 | Valve with self-rotating device for combustion or internal combustion engines | |
| US2162304A (en) * | 1937-01-23 | 1939-06-13 | Motoraktieselskapet Av 1935 | Internally cooled valve for combustion engines |
| CH321655A (en) * | 1954-04-12 | 1957-05-15 | Sulzer Ag | Device on an internal combustion engine for supplying sealing and cooling air to the stem of a valve |
| GB898588A (en) * | 1959-12-17 | 1962-06-14 | Sulzer Ag | Valve spring assemblies |
| DE1189792B (en) * | 1959-12-17 | 1965-03-25 | Sulzer Ag | Valve spring arrangement on a piston internal combustion engine |
| JPS6296706A (en) * | 1985-10-22 | 1987-05-06 | Masaaki Sato | Suction valve for internal combustion engine |
| JPH04252822A (en) * | 1991-01-28 | 1992-09-08 | Toyota Motor Corp | Intake device for internal combustion engine of double intake valve type |
| CZ392098A3 (en) * | 1998-11-30 | 2000-06-14 | Ekogas Auto Zdeněk Halada | Device for producing turbulence of sucked in charge in internal combustion engine, particularly compression ignition engine |
| DE10057192B4 (en) * | 2000-11-17 | 2009-12-10 | Mahle Ventiltrieb Gmbh | Valve for internal combustion engines |
| CN202900355U (en) * | 2012-10-31 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile engine exhaust valve |
| CN204402609U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | What have that head rushes sodium chamber rushes sodium valve |
| CN205089403U (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Circulating spiral chamber of automatically cleaning is towards sodium valve |
-
2015
- 2015-10-30 CN CN201510723983.6A patent/CN105240076A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB292093A (en) * | 1927-06-13 | 1928-12-27 | Marius Jean Baptiste Barbarou | Improvements in or relating to internal combustion engines |
| FR817272A (en) * | 1936-05-09 | 1937-08-31 | Valve with self-rotating device for combustion or internal combustion engines | |
| US2162304A (en) * | 1937-01-23 | 1939-06-13 | Motoraktieselskapet Av 1935 | Internally cooled valve for combustion engines |
| CH321655A (en) * | 1954-04-12 | 1957-05-15 | Sulzer Ag | Device on an internal combustion engine for supplying sealing and cooling air to the stem of a valve |
| GB898588A (en) * | 1959-12-17 | 1962-06-14 | Sulzer Ag | Valve spring assemblies |
| DE1189792B (en) * | 1959-12-17 | 1965-03-25 | Sulzer Ag | Valve spring arrangement on a piston internal combustion engine |
| JPS6296706A (en) * | 1985-10-22 | 1987-05-06 | Masaaki Sato | Suction valve for internal combustion engine |
| JPH04252822A (en) * | 1991-01-28 | 1992-09-08 | Toyota Motor Corp | Intake device for internal combustion engine of double intake valve type |
| CZ392098A3 (en) * | 1998-11-30 | 2000-06-14 | Ekogas Auto Zdeněk Halada | Device for producing turbulence of sucked in charge in internal combustion engine, particularly compression ignition engine |
| DE10057192B4 (en) * | 2000-11-17 | 2009-12-10 | Mahle Ventiltrieb Gmbh | Valve for internal combustion engines |
| CN202900355U (en) * | 2012-10-31 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile engine exhaust valve |
| CN204402609U (en) * | 2014-12-19 | 2015-06-17 | 重庆奇甫机械有限责任公司 | What have that head rushes sodium chamber rushes sodium valve |
| CN205089403U (en) * | 2015-10-30 | 2016-03-16 | 重庆奇甫机械有限责任公司 | Circulating spiral chamber of automatically cleaning is towards sodium valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3199770A1 (en) * | 2016-01-20 | 2017-08-02 | Mahle International GmbH | Metallic hollow valve for a combustion engine of a utility motor vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |
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| WD01 | Invention patent application deemed withdrawn after publication |