CN202900355U - Automobile engine exhaust valve - Google Patents
Automobile engine exhaust valve Download PDFInfo
- Publication number
- CN202900355U CN202900355U CN 201220565626 CN201220565626U CN202900355U CN 202900355 U CN202900355 U CN 202900355U CN 201220565626 CN201220565626 CN 201220565626 CN 201220565626 U CN201220565626 U CN 201220565626U CN 202900355 U CN202900355 U CN 202900355U
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- inner chamber
- automobile engine
- exhaust valve
- exhaust
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Abstract
The utility model provides an automobile engine exhaust valve, and belongs to the technical field of automobiles. The automobile engine exhaust valve solves the problems that the heat conduction efficiency of an automobile engine exhaust valve in the prior art is low, and the like. The automobile engine exhaust valve comprises a valve rod and a valve head. The valve head is fixedly connected with one end of the valve rod, a first inner cavity and a second inner cavity are respectively formed inside the valve head and the valve rod, the first inner cavity is communicated with the second inner cavity, liquid metal is filled in the first inner cavity and the second inner cavity, and spiral dimpled grains are formed respectively in the cavity walls of the first inner cavity and the second inner cavity. The automobile engine exhaust valve has the advantages of being high in heat conduction efficiency, light in weight, good in strength, and the like.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of automobile engine to exhaust door.
Background technique
Exhaust valve is positioned on the cylinder head that consists of the firing chamber, during engine operation, exhaust valve can to-and-fro motion under the acting in conjunction of rocking arm and valve spring, in the working procedure of whole motor, taken on different functions, it be internal-combustion engine finish the work circulation, realize the strength member of ventilation and sealing function, be again that gas is into and out of the passage of firing chamber.Because the comprehensive functions such as exhaust valve is bearing outburst gas when working, the impact force of taking a seat, thermal stress, high temperature corrosion are easy to damage, so the exhaust valve of development Wear-resistant, high-temperature resistant has become the common problems of concern of vast auto vendor.
China patent CN200910266536.7 discloses a kind of automotive exhaust valve, this exhaust valve comprises valve stem, the valve head that is formed by air valve cervix and Valve Disc, air valve cervix connects valve stem and Valve Disc, valve stem length is 100～101mm, the thickness of Valve Disc is 3.8～4.3mm, the transition cone angle is 15 °～20 °, air valve cervix is taper, the angle of the bus elongation line of the air valve cervix conical surface is 6 °～10 °, the minimum place of air valve cervix diameter is 8.7～8.9mm, thereby this exhaust valve reduces valve head thermal capacity by reducing the valve head weight, and the movement inertia when reducing valve work reduces impact force, reduce simultaneously cost of material and processing cost, by reducing exhaust valve transition cone angle, thereby reduce valve head thermal capacity, avoid exhaust valve dish section to burn piece.But during owing to exhaust valve work, heat concentrates on the valve head, although this exhaust valve can reduce the thermal capacity at valve head place, but the heat at this row's door head place can not well be spread, during exhaust valve work, valve head is hot soak condition still, can not fundamentally solve the problem of valve head heat accumulation.
China patent CN200910231600.8 discloses a kind of hollow valve filled with sodium, and the engine valve stem of this valve has cylindrical cavity, and head has conical cavity, is filled with sodium metal and getter zirconium powder in the valve inner chamber.During exhaust valve work, sodium in the valve inner chamber is understood melting and is flowed along with pumping of valve, the heat of engine valve stem is delivered in the valve guide bushing by sodium, thereby reach the purpose of heat radiation, effectively prevent exhaust valve rod section, head generation heat accumulation and suddenly intensification, ensured usability and the working life of exhaust valve rod and head.But the sodium in this exhaust valve and the area of contact of exhaust valve are less, and pumping during exhaust valve work is very fast, sodium after the melting is also done rapidly in cavity up and down reciprocatingly and is flowed, sodium after the melting is not easily because also fully absorbing the heat at valve head place, just flow in the valve stem, can not play good radiating effect.Cavity in this valve head is also larger simultaneously, intensity is low, valve head can be subject to larger impact force when valve returns, easily cause valve head to come off, this valve is that to have a metal pipe fill material of hollow core with one compressing more in process of production, in the tubing pressing process, the tubing of hollow easily is out of shape, and this is also so that the intensity of this valve is relatively poor.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist for existing technology, and a kind of automobile engine to exhaust door is provided, and technical problem to be solved in the utility model is to improve the heat transfer efficiency of automobile engine to exhaust door.
The purpose of this utility model can realize by following technical proposal: a kind of automobile engine to exhaust door, comprise valve stem, valve head, described valve head is connected in an end of valve stem, offer respectively inner chamber one, inner chamber two in described valve head, the valve stem, and described inner chamber one is interconnected with inner chamber two, it is characterized in that, be filled with liquid metal in described inner chamber one and the inner chamber two, all offer the helical dimpled grain on the chamber wall of described inner chamber one and inner chamber two.
Meeting is reciprocating up and down when exhaust valve is worked, above-mentioned liquid metal also flows thereupon, the heat at valve head place is passed to the valve stem place, dispel the heat by valve guide bushing again, owing to all offering the helical dimpled grain on the inner chamber one of this exhaust valve and the chamber wall of inner chamber two, increased the area of contact of liquid metal and exhaust valve, and because after offering the helical dimpled grain, the operative liquid metal can be for the helical movement in this dimpled grain, can guarantee that liquid metal fully absorbs the heat at valve head place, thereby effectively improved the heat transfer efficiency of exhaust valve, the liquid metal in this exhaust valve had both comprised under the normal temperature being liquid metal, for example mercury, be liquid metal when being also included within exhaust valve work, sodium for example, zinc, aluminium etc., the fusing point of these metals is lower, is converted into liquid state for dissolving when exhaust valve is worked.
In above-mentioned a kind of automobile engine to exhaust door, described liquid metal volume account for inner chamber one and inner chamber two volumes and percentage be 50%～60%.The volume ratio of filling metal and inner chamber is controlled in 50%～60% the scope, when guaranteeing exhaust valve work, can be not obvious because of the very few heat-conducting effect that causes of the molten metal content in the inner chamber, also avoid because molten metal too much causes its upper current downflow in cavity excessively slow, the heat at valve head place can not be delivered in the valve guide bushing by valve stem in time.
In above-mentioned a kind of automobile engine to exhaust door, described liquid metal is potassium.The fusing point of metallic potassium is 63.25 ℃, and during exhaust valve work, metallic potassium can melting be converted into liquid state, usually be filled with sodium metal in the present hollow exhaust valve on the market, but the density of sodium is 0.968g/mm
3, and the density of potassium only has 0.86g/mm
3Can effectively alleviate the important of exhaust valve, alleviate the wearing and tearing in the exhaust valve work, increase the operating life of exhaust valve, although part producer adopts the method for filling lithium metal, because lithium content on earth seldom, belongs to rare metal, price is very expensive, is applied in the cost of production that can greatly increase exhaust valve in the exhaust valve.
In above-mentioned a kind of automobile engine to exhaust door, described valve head exterior edge face has a groove.After offering groove, can effectively alleviate the weight of exhaust valve, alleviate the wearing and tearing in the exhaust valve work.
In above-mentioned a kind of automobile engine to exhaust door, the length of described inner chamber one and inner chamber two and account for 1/3～1/2 of valve stem length.Because during exhaust valve work, heat concentrates on the valve head place, and the temperature of valve stem is relatively low, with the length of inner chamber one and inner chamber two and be arranged on valve stem length 1/3～1/2 in, both having guaranteed heat with the valve head place conducts to rapidly in the valve stem and by the valve guide bushing heat radiation, avoids simultaneously exhaust valve to cause strength decreased because of integral hollow.
Compared with prior art, the utlity model has following advantage:
1, the area of contact of liquid metal and exhaust valve is large in this automobile engine to exhaust door, and liquid metal can be for the helical movement in inner chamber one, inner chamber two, and the heat transfer efficiency of exhaust valve is high.
2, the liquid metal in this automobile engine to exhaust door adopts potassium, and the density of potassium is lower, can effectively reduce exhaust valve important, thereby reduces the wearing and tearing of exhaust valve.
3, the length of this automobile engine to exhaust goalkeeper inner chamber one and inner chamber two and be arranged on valve stem length 1/3～1/2 in, both having guaranteed heat with the valve head place conducts to rapidly in the valve stem and by the valve guide bushing heat radiation, avoids simultaneously exhaust valve to cause strength decreased because of integral hollow.
Description of drawings
Fig. 1 is the structural representation of this automobile engine to exhaust door among the embodiment.
Among the figure, 1, valve stem; 1a, valve stem stem; 1b, valve stem afterbody; 2, valve head; 3, inner chamber one; 4, inner chamber two; 5, potassium; 6, dimpled grain; 7, groove; 8, valve collet groove.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this automobile engine to exhaust door comprises valve stem 1, valve head 2, valve head 2 is connected in an end of valve stem 1, valve head 2, valve stem 1 interior inner chamber 1, the inner chamber 24 of offering respectively, and inner chamber 1 is interconnected with inner chamber 24, the length of inner chamber 1 and inner chamber 24 and account for 1/3～1/2 of valve stem 1 length, be filled with metallic potassium 5 in inner chamber 1 and the inner chamber 24, the volume of metallic potassium 5 account for inner chamber 1 and inner chamber 24 volumes and percentage be 50%～60%, all offer helical dimpled grain 6 on the chamber wall of inner chamber 1 and inner chamber 24.
As shown in Figure 1, valve head 2 interior edge faces link to each other with valve stem 1, the exterior edge face of valve head 2 is in the form of annular discs, and these valve head 2 exterior edge faces also have an annular groove 7, the bottom surface of groove 7 and valve head 2 exterior edge faces are provided with the transitional surface of an arc, the transitional surface that also has a circular arc between valve head 2 and the valve stem 1, valve stem 1 is cylinder, the outer end of valve stem 1 offers a valve collet groove 8, and this valve stem 1 comprises valve stem stem 1a and the valve stem afterbody 1b of coaxial butt welding, wherein valve stem stem 1a adopts austenitic heat-resistance steel to make, generally include 5Cr21Mn9Ni4N, 5Cr21Mn9Ni4N, 5Cr20Mn8Ni2N etc., has good Properties of High Temperature Creep, valve stem afterbody 1b adopts martensite heat-resistant steel to make, generally include 5Cr9Si3,5Cr8Si2 etc., has good crocking resistance, exhaust valve in the conventional art adopts high temperature resistant and wear-resisting material usually, cost of production is higher, valve stem stem 1a in this exhaust valve, valve stem afterbody 1b adopts respectively austenitic heat-resistance steel and martensite heat-resistant steel, can when increasing exhaust valve working life, reduce the cost of production of exhaust valve.
The working principle of this device is as follows: be filled with metallic potassium 5 in the inner chamber 1 of this exhaust valve, the inner chamber 24, when exhaust valve is worked, metallic potassium 5 can melting be converted into liquid state, and flow along with pumping of exhaust valve, owing to all offering helical dimpled grain 6 on the chamber wall of inner chamber 1 and inner chamber 24, liquid potassium 5 increases with the area of contact of exhaust valve, and can be for the helical movement in dimpled grain 6, can fully absorb the heat at valve head 2 places, thereby improve the heat transfer efficiency of exhaust valve.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. automobile engine to exhaust door, comprise valve stem (1), valve head (2), described valve head (2) is connected in an end of valve stem (1), offer respectively inner chamber one (3), inner chamber two (4) in described valve head (2), the valve stem (1), and described inner chamber one (3) is interconnected with inner chamber two (4), it is characterized in that, be filled with liquid metal in described inner chamber one (3) and the inner chamber two (4), all offer helical dimpled grain (6) on the chamber wall of described inner chamber one (3) and inner chamber two (4).
2. a kind of automobile engine to exhaust door according to claim 1 is characterized in that, described liquid metal volume account for inner chamber one (3) and inner chamber two (4) volumes and percentage be 50%～60%.
3. a kind of automobile engine to exhaust door according to claim 2 is characterized in that, described liquid metal is potassium (5).
4. according to claim 1 and 2 or 3 described a kind of automobile engine to exhaust doors, it is characterized in that, described valve head (2) exterior edge face has a groove (7).
5. according to claim 1 and 2 or 3 described a kind of automobile engine to exhaust doors, it is characterized in that the length of described inner chamber one (3) and inner chamber two (4) and account for 1/3～1/2 of valve stem (1) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565626 CN202900355U (en) | 2012-10-31 | 2012-10-31 | Automobile engine exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565626 CN202900355U (en) | 2012-10-31 | 2012-10-31 | Automobile engine exhaust valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900355U true CN202900355U (en) | 2013-04-24 |
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ID=48121036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220565626 Expired - Fee Related CN202900355U (en) | 2012-10-31 | 2012-10-31 | Automobile engine exhaust valve |
Country Status (1)
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|---|---|
| CN (1) | CN202900355U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240081A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Valve with sodium-filled spiral conical cavity |
| CN105240073A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Sodium charging air valve with semispherical heat exchange face |
| CN105240074A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Air valve with circulation spiral type spherical heat exchange face |
| CN105240078A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Screw flow guide air valve charged with sodium |
| CN105240075A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Air valve with circulation spiral sodium-filled cavity |
| CN105240076A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Cyclic spiral cavity sodium-filled air valve with spiral blade |
| CN105240079A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Circular spiral type double-cavity sodium-filled valve with spiral blade |
| CN105257359A (en) * | 2015-10-30 | 2016-01-20 | 重庆奇甫机械有限责任公司 | Spiral double-cavity sodium-filled valve with spiral blade |
| CN105298579A (en) * | 2015-10-30 | 2016-02-03 | 重庆奇甫机械有限责任公司 | Spiral flow guide type hemisphere heat exchange face sodium filling air valve |
| CN105443186A (en) * | 2015-10-30 | 2016-03-30 | 重庆奇甫机械有限责任公司 | Air valve with circulative spiral type conical cavity |
| EP3032053A1 (en) * | 2014-12-10 | 2016-06-15 | General Electric Company | System and method of cooling valve with material in cavity |
| CN107829794A (en) * | 2017-10-25 | 2018-03-23 | 江苏金山动力科技有限公司 | A kind of hollow valve |
| CN108894842A (en) * | 2018-07-27 | 2018-11-27 | 安庆市鼎立汽车配件有限公司 | High-intensitive exhaust valve |
| WO2019001780A1 (en) * | 2017-06-29 | 2019-01-03 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized shaft interior geometry, and method for producing same |
| CN111502792A (en) * | 2014-08-27 | 2020-08-07 | 富士特殊气门有限公司 | Hollow engine valve |
| CN114109552A (en) * | 2021-12-15 | 2022-03-01 | 镇江维纳特气门科技有限公司 | Internal combustion engine intake valve convenient to adjust |
-
2012
- 2012-10-31 CN CN 201220565626 patent/CN202900355U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502792A (en) * | 2014-08-27 | 2020-08-07 | 富士特殊气门有限公司 | Hollow engine valve |
| EP3032053A1 (en) * | 2014-12-10 | 2016-06-15 | General Electric Company | System and method of cooling valve with material in cavity |
| US9683467B2 (en) | 2014-12-10 | 2017-06-20 | General Electric Company | System and method of cooling valve with material in cavity |
| CN105240076A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Cyclic spiral cavity sodium-filled air valve with spiral blade |
| CN105240075A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Air valve with circulation spiral sodium-filled cavity |
| CN105240081A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Valve with sodium-filled spiral conical cavity |
| CN105240079A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Circular spiral type double-cavity sodium-filled valve with spiral blade |
| CN105257359A (en) * | 2015-10-30 | 2016-01-20 | 重庆奇甫机械有限责任公司 | Spiral double-cavity sodium-filled valve with spiral blade |
| CN105298579A (en) * | 2015-10-30 | 2016-02-03 | 重庆奇甫机械有限责任公司 | Spiral flow guide type hemisphere heat exchange face sodium filling air valve |
| CN105443186A (en) * | 2015-10-30 | 2016-03-30 | 重庆奇甫机械有限责任公司 | Air valve with circulative spiral type conical cavity |
| CN105240078A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Screw flow guide air valve charged with sodium |
| CN105240074A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Air valve with circulation spiral type spherical heat exchange face |
| CN105240073A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Sodium charging air valve with semispherical heat exchange face |
| 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 |
| WO2019001780A1 (en) * | 2017-06-29 | 2019-01-03 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized shaft interior geometry, and method for producing same |
| DE102017114509A1 (en) * | 2017-06-29 | 2019-01-03 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized internal shaft geometry and method for its production |
| US11313257B2 (en) | 2017-06-29 | 2022-04-26 | Federal-Mogul Valvetrain Gmbh | Cavity valve with optimized shaft interior geometry, and method for producing same |
| CN107829794A (en) * | 2017-10-25 | 2018-03-23 | 江苏金山动力科技有限公司 | A kind of hollow valve |
| CN108894842A (en) * | 2018-07-27 | 2018-11-27 | 安庆市鼎立汽车配件有限公司 | High-intensitive exhaust valve |
| CN114109552A (en) * | 2021-12-15 | 2022-03-01 | 镇江维纳特气门科技有限公司 | Internal combustion engine intake valve convenient to adjust |
| CN114109552B (en) * | 2021-12-15 | 2024-06-18 | 镇江维纳特气门科技有限公司 | Internal combustion engine intake valve convenient to adjust |
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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: 20130424 Termination date: 20201031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |