CN205154289U - Engine valve assembly - Google Patents
Engine valve assembly Download PDFInfo
- Publication number
- CN205154289U CN205154289U CN201520907233.XU CN201520907233U CN205154289U CN 205154289 U CN205154289 U CN 205154289U CN 201520907233 U CN201520907233 U CN 201520907233U CN 205154289 U CN205154289 U CN 205154289U
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- valve
- face
- retainer
- seat ring
- conical surface
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Abstract
The utility model discloses an engine valve assembly, including valve retainer and valve seat insert, valve retainer is equipped with the valve -face, valve seat insert is equipped with axial through's valve throat, the inner peripheral surface of valve throat from interior to outer including consecutive aditus laryngis cylindroid, be used for with the valve -face form the clearance the first chamfer conical surface, be used for with valve conical contact complex sealing conical face and be used for forming the second chamfer conical surface in clearance with the valve -face, the utility model discloses can form the structure of " valve package valve seat insert ", this structure can effectively increase the contact surface of valve seat insert when cooperate with the valve, effectively improves the valve to valve seat insert's heat conductivility, reduces the heating load of valve -face, reduces the take a seat impact force of valve -face when valve closure, guarantees well sealedly, prevents gas leakage, prolongs valve and valve seat insert's life.
Description
Technical field
The utility model relates to a kind of engine components, particularly a kind of engine valve assembly.
Background technique
Each cylinder of motor is all fitted with valve (comprising intake valve and exhaust valve), in the working cycle process of each cylinder, valve opens and closes all in sequence, is used for ensureing that fresh charge is entered cylinder in time, and waste gas can discharge in time; It is one of main parts size of coordinating with valve that air valve seat ring is fitted in cylinder head, and air valve seat ring is provided with the sealing cone matched with valve-face, by the unlatching or closedown that realize valve venturi of moving up and down of valve.Traditional air valve seat ring surface of contact (face that valve-face contacts with sealing cone) when coordinating with valve is too small, reduce the heat-conducting property of valve to air valve seat ring, add the heat load of valve-face, add the take a seat impact force of valve-face when valve-closing; In addition, be transitioned in " face contact " process in the sealing of air valve seat ring by " linear contact lay ", the valve-face dorsal horn direction possibility embedding sealing conical surface, cause poor sealing between valve and air valve seat ring, cause gas leakage, cause valve ablation, shorten the working life of valve and air valve seat ring widely, reduce the prestige on quality of product.
Therefore, just need a kind of engine valve assembly, effectively can increase the surface of contact of air valve seat ring when coordinating with valve, effective raising valve is to the heat-conducting property of air valve seat ring, reduce the heat load of valve-face, reduce the take a seat impact force of valve-face when valve-closing, ensure excellent sealing, prevent gas leakage, extend the working life of valve and air valve seat ring.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of engine valve assembly, effectively can increase the surface of contact of air valve seat ring when coordinating with valve, effective raising valve is to the heat-conducting property of air valve seat ring, reduce the heat load of valve-face, reduce the take a seat impact force of valve-face when valve-closing, ensure excellent sealing, prevent gas leakage, extend the working life of valve and air valve seat ring.
Engine valve assembly of the present utility model, comprise valve retainer and air valve seat ring, described valve retainer is provided with valve-face, described air valve seat ring is provided with axially through valve venturi, the inner peripheral surface of described valve venturi comprise from the inside to the outside be connected successively aditus laryngis cylindroid, for valve-face formed gap the first chamfering conical surface, for contacting the sealing cone that coordinates with valve-face and for forming the second chamfering conical surface in gap with valve-face.
Further, the taper angle of the described taper angle of the first chamfering conical surface, the taper angle of sealing cone and the second chamfering conical surface increases successively, and the taper angle of the taper angle of described sealing cone is 40 °-50 °.
Further, the taper angle of the described first chamfering conical surface is 25 °-35 °.
Further, the taper angle of the described second chamfering conical surface is 55 °-65 °.
Further, be provided with press-in lead angle bottom the outer peripheral surface of described air valve seat ring, described press-in lead angle comprises the arc section that is connected with air valve seat ring base circle face and the taper straightway for being connected arc section and air valve seat ring outer peripheral surface.
Further, the radius of arc of described arc section is 0.8mm-1.2mm, and the taper angle of described taper straightway is 8 °-12 °.
Further, this assembly also comprises the valve stem with valve retainer dead in line, and a cavity extends to valve stem along shaft axis from valve retainer: described cavity is 4.0mm-5.0mm near the distance between one end and the end face of valve retainer of valve retainer.
Further, the end face of described valve retainer is plane.
Further, there is a sunk area center of the end face of described valve retainer.
Further, the solid stems that described valve stem comprises rod blank and is coaxially fixedly connected with rod blank, described rod blank and valve retainer one-body molded.
The beneficial effects of the utility model: engine valve assembly of the present utility model, inside and outside air valve seat ring sealing cone, both sides are provided with the first chamfering conical surface and the second chamfering conical surface respectively, when valve coordinates with air valve seat ring, the first chamfering conical surface, the second chamfering conical surface all forms gap with valve-face, thus form the structure of " valve bag air valve seat ring ", this structure effectively can increase the surface of contact of air valve seat ring when coordinating with valve, effective raising valve is to the heat-conducting property of air valve seat ring, reduce the heat load of valve-face, reduce the take a seat impact force of valve-face when valve-closing, ensure excellent sealing, prevent gas leakage, extend the working life of valve and air valve seat ring.
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 structural representation of air valve seat ring of the present utility model;
Fig. 3 is A place enlarged view in Fig. 2;
Embodiment
Fig. 1 is structural representation of the present utility model, Fig. 2 is the structural representation of air valve seat ring of the present utility model, Fig. 3 is A place enlarged view in Fig. 2, as shown in the figure: the engine valve assembly of the present embodiment, comprise valve retainer 9 and air valve seat ring 1, described valve retainer 9 is provided with valve-face 91, described air valve seat ring 1 is provided with axially through valve venturi 2, the inner peripheral surface of described valve venturi 2 comprises the aditus laryngis cylindroid 3 be connected successively from the inside to the outside, for forming the first chamfering conical surface 4 in gap with valve-face 91, for contacting the sealing cone 5 that coordinates with valve-face 91 and for forming the second chamfering conical surface 6 in gap with valve-face 91, valve venturi 2 is design in loudspeaker enlarging, refers to from the minor diameter of horn strucutre to major diameter prescription to, the aditus laryngis cylindroid 3 i.e. small diameter portion of valve venturi 2 from the inside to the outside, inside and outside air valve seat ring 1 sealing cone 5, both sides are provided with the first chamfering conical surface 4 and the second chamfering conical surface 6 respectively, when air valve seat ring 1 coordinates with valve retainer 9, the first chamfering conical surface 4, the second chamfering conical surface 6 all forms gap with valve-face 91, thus form the structure of " valve bag air valve seat ring ", this structure effectively can increase the surface of contact of air valve seat ring when coordinating with valve, effective raising valve is to the heat-conducting property of air valve seat ring, reduce the heat load of valve-face 91, reduce the take a seat impact force of valve-face 91 when valve-closing, ensure excellent sealing, prevent gas leakage, extend the working life of valve and air valve seat ring.
In the present embodiment, the taper angle c of the described taper angle a of the first chamfering conical surface 4, the taper angle b of sealing cone 5 and the second chamfering conical surface 6 increases successively, and the taper angle of the taper angle b of described sealing cone 5 is 40 °-50 °; As shown in Figure 3, described taper angle refers to the bus of the corresponding conical surface and the angle of axis L; Each taper angle increases successively, the surface of contact of air valve seat ring when coordinating with valve can not only be increased, air valve seat ring can be sealed and matched better with valve, substantially increase the equipped precision of product, and air-flow trend when improving valve opening, experiment proves that its strength of vortex, flow coefficient and intake and exhaust efficiency are all improved, and reduces flow resistance; The taper angle of the taper angle b of described sealing cone 5 is preferably 45 °; In addition, the taper angle a of the described first chamfering conical surface 4 is 25 °-35 °, is preferably 30 °; The taper angle b of the described second chamfering conical surface 6 is 55 °-65 °, is preferably 60 °.
In the present embodiment, be provided with press-in lead angle bottom the outer peripheral surface 11 of described air valve seat ring 1, described press-in lead angle comprises the arc section 71 connected with air valve seat ring 1 base circle face 12 and the taper straightway 72 for being connected arc section 71 and air valve seat ring 1 outer peripheral surface 11; Press-in lead angle is used for air valve seat ring 1 to press-fit in cylinder head; The project organization that arc section 71 matches with taper straightway 72 can make this product being more prone to during cylinder head press-fit, can also ensure the tightness press-fited simultaneously, improve the assembly precision of product; In the present embodiment, the radius of arc R of described arc section 71 can be 0.8mm-1.2mm, and the taper angle d of described taper straightway 72 can be 8 °-12 °; Preferably, the radius of arc R of described arc section 71 is 1.0mm, and the taper angle d of described taper straightway 72 is 10 °.
In the present embodiment, this assembly also comprises the valve stem with valve retainer 9 dead in line, one cavity 8a extends to valve stem along shaft axis from valve retainer 9: described cavity 8a is 4.0mm-5.0mm near the distance between one end of valve retainer 9 and the end face of valve retainer 9, and this distance is preferably 4.5mm; The setting of cavity 8a can not only alleviate the weight of whole valve, when making air valve drop, impact load reduces, and in cavity 8a time filling low melting metal (as sodium), utilize its mobility the heat of valve can be passed to valve guide bushing rapidly, thus reduce the heat load of valve; The heat conduction that air valve cervix and valve retainer 9 center gather can be walked by the valve of this structure preferably, thus valve is dispelled the heat evenly.
In the present embodiment, the end face 9a of described valve retainer 9 is plane, and heat diffusion area is little, and has higher intensity; In addition, there is a sunk area 91 center of the end face 9a of described valve retainer 9, is conducive to formation one gas swirl, is more conducive to heat radiation, is also conducive to alleviating valve weight simultaneously.
In the present embodiment, described valve stem comprises rod blank 81 and one-body molded with rod blank described in the coaxial solid stems 82 be connected of rod blank 81 81 and valve retainer 9; Described rod blank 81 is preferably coaxial welding with solid stems 82 and is connected; The Main Function of rod blank 81 is heat conduction, and solid stems 82 coordinates with valve guide bushing, valve spring.
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 (10)
1. an engine valve assembly, comprise valve retainer and air valve seat ring, described valve retainer is provided with valve-face, described air valve seat ring is provided with axially through valve venturi, it is characterized in that: the inner peripheral surface of described valve venturi comprise from the inside to the outside be connected successively aditus laryngis cylindroid, for valve-face formed gap the first chamfering conical surface, for contacting the sealing cone that coordinates with valve-face and for forming the second chamfering conical surface in gap with valve-face.
2. engine valve assembly according to claim 1, it is characterized in that: the taper angle of the described taper angle of the first chamfering conical surface, the taper angle of sealing cone and the second chamfering conical surface increases successively, the taper angle of the taper angle of described sealing cone is 40 °-50 °.
3. engine valve assembly according to claim 2, is characterized in that: the taper angle of the described first chamfering conical surface is 25 °-35 °.
4. engine valve assembly according to claim 3, is characterized in that: the taper angle of the described second chamfering conical surface is 55 °-65 °.
5. engine valve assembly according to claim 1, it is characterized in that: be provided with press-in lead angle bottom the outer peripheral surface of described air valve seat ring, described press-in lead angle comprises the arc section that is connected with air valve seat ring base circle face and the taper straightway for being connected arc section and air valve seat ring outer peripheral surface.
6. engine valve assembly according to claim 5, is characterized in that: the radius of arc of described arc section is 0.8mm-1.2mm, and the taper angle of described taper straightway is 8 °-12 °.
7. engine valve assembly according to claim 1, it is characterized in that: this assembly also comprises the valve stem with valve retainer dead in line, a cavity extends to valve stem along shaft axis from valve retainer: described cavity is 4.0mm-5.0mm near the distance between one end and the end face of valve retainer of valve retainer.
8. engine valve assembly according to claim 7, is characterized in that: the end face of described valve retainer is plane.
9. engine valve assembly according to claim 7, is characterized in that: there is a sunk area center of the end face of described valve retainer.
10. engine valve assembly according to claim 7 is characterized in that: the solid stems that described valve stem comprises rod blank and is coaxially fixedly connected with rod blank, described rod blank and valve retainer one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520907233.XU CN205154289U (en) | 2015-11-13 | 2015-11-13 | Engine valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520907233.XU CN205154289U (en) | 2015-11-13 | 2015-11-13 | Engine valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154289U true CN205154289U (en) | 2016-04-13 |
Family
ID=55689996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520907233.XU Active CN205154289U (en) | 2015-11-13 | 2015-11-13 | Engine valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154289U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350750A (en) * | 2017-08-21 | 2017-11-17 | 济南沃德汽车零部件有限公司 | The manufacture method of hollow valve |
| WO2020219273A1 (en) * | 2019-04-26 | 2020-10-29 | Caterpillar Inc. | Double-crowned valve seat insert having seating surface formed of hard-facing material |
| FR3103515A1 (en) * | 2019-11-21 | 2021-05-28 | Renault Sas | EXHAUST VALVE SEAT WITH AN OPTIMIZED AERODYNAMIC PROFILE |
-
2015
- 2015-11-13 CN CN201520907233.XU patent/CN205154289U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350750A (en) * | 2017-08-21 | 2017-11-17 | 济南沃德汽车零部件有限公司 | The manufacture method of hollow valve |
| CN107350750B (en) * | 2017-08-21 | 2019-02-19 | 济南沃德汽车零部件有限公司 | The manufacturing method of hollow valve |
| WO2020219273A1 (en) * | 2019-04-26 | 2020-10-29 | Caterpillar Inc. | Double-crowned valve seat insert having seating surface formed of hard-facing material |
| US10989321B2 (en) | 2019-04-26 | 2021-04-27 | Caterpillar Inc. | Double-crowned valve seat insert having seating surface formed of hard-facing material |
| FR3103515A1 (en) * | 2019-11-21 | 2021-05-28 | Renault Sas | EXHAUST VALVE SEAT WITH AN OPTIMIZED AERODYNAMIC PROFILE |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170224 Address after: 401221 Chongqing Changshou District Industrial Park electromechanical materials Park Patentee after: Chongqing Xiaokang Power Co., Ltd. Address before: 400033 Jinqiao Road, Shapingba District, Chongqing, 61-1 Patentee before: Chongqing Xiaokang Industry Group Co., Ltd. |