CN202756041U - Carbon-scrapping type exhaust valve - Google Patents
Carbon-scrapping type exhaust valve Download PDFInfo
- Publication number
- CN202756041U CN202756041U CN 201220336943 CN201220336943U CN202756041U CN 202756041 U CN202756041 U CN 202756041U CN 201220336943 CN201220336943 CN 201220336943 CN 201220336943 U CN201220336943 U CN 201220336943U CN 202756041 U CN202756041 U CN 202756041U
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- valve
- carbon
- groove
- scrapping
- neck
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Abstract
The utility model belongs to the technical field of engines, and particularly relates to a carbon-scrapping type exhaust valve. The carbon-scrapping type exhaust valve comprises a valve collar, a valve neck and a valve rod, wherein the valve rod makes reciprocating motion in a valve guide pipe, and a carbon-scrapping groove is arranged between the valve neck and the valve rod. When the valve rod moves along the valve guide pipe, the carbon-scrapping groove is matched with the inner wall of the valve guide pipe to form a carbon-scrapping effect, and therefore attached colloidal materials are effectively reduced, and the phenomenon of blockage of the valve caused by accumulated carbon is reduced. In addition, according to the use requirement of the carbon-scrapping groove, the width of the carbon-scrapping groove is set as 4.8-5.2 millimeters, and the depth of the carbon-scrapping groove is set as 0.4-0.6 millimeter.
Description
Technical field
The utility model belongs to technical field of engines, is specifically related to scrape the engine exhaust port of carbon formula.
Background technique
Valve is a kind of vitals of motor, its effect be in the motor input air and discharge burning after waste gas.From engine structure, valve is divided into two kinds of intake valve and exhaust valves.The effect of intake valve is with in the air intake motor, burns with fuel mix; The effect of exhaust valve is that the waste gas after the burning is discharged and heat radiation.
Now present, the most structural design of the intake valve of motor is simple, engine valve is less, although it is comparatively convenient to use, but engine oil gas mixed combustion is insufficient or gasoline impurity is too much, so be easy to form colloidal material at valve end and the exhaust valve head of engine valve, it is exactly so-called " carbon distribution " phenomenon.This phenomenon not only so that the exhaust passage section greatly reduces, affects the air displacement of motor, and makes oxygen supply deficiency in the firing chamber, causes the vicious circle of carbon distribution deposition; Simultaneously, the carbon distribution that the colloidal material that valve end forms and exhaust valve head are easy to form, the wearing and tearing that these all will aggravate valve are easy to cause intake valve stuck.So in order to guarantee the normal operation of motor, people have to often the carbon distribution on the exhaust valve to be struck off, very trouble operates.
The model utility content
The utility model provides scrapes carbon formula exhaust valve, can wipe the carbon distribution that adsorbs on the valve off in the exhaust valve to-and-fro motion, avoids exhaust valve to cause the stuck problem of valve because of carbon distribution.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme: scrape carbon formula exhaust valve, comprise valve retainer, valve neck, valve stem, valve stem is reciprocating in valve guide bushing, be provided with between described valve neck and the valve stem and scrape the carbon groove, the groove width of scraping the carbon groove is 4.8mm～5.2mm, and its groove depth is 0.4mm～0.6mm.
Adopt technique scheme, in the utility model, be provided with between valve neck and the valve stem and scrape the carbon groove, when valve stem moves along valve guide bushing, scrape carbon groove fit valve guide bushing inner wall edge and form and to scrape the carbon effect, effectively reduced the valve stuck phenomenon that colloidal material adheres to and the carbon deposit that generates thus causes; And the use needs according to scraping the carbon groove are decided to be 4.8mm～5.2mm with groove width, and its groove depth is 0.4mm～0.6mm.
Further, described length of scraping the carbon groove is greater than the axially movable ultimate range of valve stem described in the engine valve to-and-fro motion process, can guarantee like this to scrape the carbon groove totally and the carbon distribution on the valve stem, thoroughly.
Further, be provided with the circular arc connecting body between described valve retainer and the valve neck, avoided stress to concentrate, thereby effectively guaranteed valve stem intensity, prolong valve working life.
Further, a described end of scraping the close valve neck of carbon groove is provided with the circular cone that width is 0.9mm～1.1mm, is convenient to decarbonizing.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation that the utility model is scraped carbon formula exhaust valve embodiment.
Embodiment
Embodiment 1:
As shown in Figure 1: scrape carbon formula exhaust valve, comprise valve retainer 1, valve neck 2, valve stem 3, valve stem 3 is reciprocating in valve guide bushing, be provided with circular arc connecting body 4 between described valve retainer 1 and the valve neck 2, be provided with between described valve neck 2 and the valve stem 3 and scrape carbon groove 5, the groove width of scraping carbon groove 5 is d1, the length of d1 is 4.8mm, its groove depth is d2, the length of d2 is 0.4mm, scrape the length of carbon groove 5 greater than the 3 axially movable ultimate ranges of valve stem described in the engine valve to-and-fro motion process, scraping carbon groove 5, to be provided with width near an end of valve necks 2 be d3, and the length of d3 is the circular cone 6 of 0.9mm.
When valve is in full-shut position, scrapes carbon groove 5 and be in the valve guide bushing.Do in the process of axially reciprocating along valve guide bushing at valve stem 3, scrape constantly scraping valve guide bushing inwall of carbon groove 5, the colloidal material that sticks on valve stem 3 and the valve guide bushing inwall is scraped in the carbon groove 5 by the to-and-fro motion of valve, colloidal material in exhaust process along with waste gas is discharged from cylinder.Thereby reduced colloidal material the gathering of valve stem 3, valve guide bushing and valve neck 2, avoided valve because the problem of carbon distribution causes stuck phenomenon.
Embodiment 2:
As shown in Figure 1: scrape carbon formula exhaust valve, comprise valve retainer 1, valve neck 2, valve stem 3, valve stem 3 is reciprocating in valve guide bushing, be provided with circular arc connecting body 4 between described valve retainer 1 and the valve neck 2, be provided with between described valve neck 2 and the valve stem 3 and scrape carbon groove 5, the groove width of scraping carbon groove 5 is d1, the length of d1 is 5.2mm, its groove depth is d2, the length of d2 is 0.6mm, scrape the length of carbon groove 5 greater than the 3 axially movable ultimate ranges of valve stem described in the engine valve to-and-fro motion process, scraping carbon groove 5, to be provided with width near an end of valve necks 2 be d3, and the length of d3 is the circular cone 6 of 1.1mm.
When valve is in full-shut position, scrapes carbon groove 5 and be in the valve guide bushing.Do in the process of axially reciprocating along valve guide bushing at valve stem 3, scrape constantly scraping valve guide bushing inwall of carbon groove 5, the colloidal material that sticks on valve stem 3 and the valve guide bushing inwall is scraped in the carbon groove 5 by the to-and-fro motion of valve, colloidal material in exhaust process along with waste gas is discharged from cylinder.Thereby reduced colloidal material the gathering of valve stem 3, valve guide bushing and valve neck 2, avoided valve because the problem of carbon distribution causes stuck phenomenon.
Embodiment 3:
As shown in Figure 1: scrape carbon formula exhaust valve, comprise valve retainer 1, valve neck 2, valve stem 3, valve stem 3 is reciprocating in valve guide bushing, be provided with circular arc connecting body 4 between described valve retainer 1 and the valve neck 2, be provided with between described valve neck 2 and the valve stem 3 and scrape carbon groove 5, the groove width of scraping carbon groove 5 is d1, the length of d1 is 5.0mm, its groove depth is d2, the length of d2 is 0.5mm, scrape the length of carbon groove 5 greater than the 3 axially movable ultimate ranges of valve stem described in the engine valve to-and-fro motion process, scraping carbon groove 5, to be provided with width near an end of valve necks 2 be d3, and the length of d3 is the circular cone 6 of 1.0mm.
When valve is in full-shut position, scrapes carbon groove 5 and be in the valve guide bushing.Do in the process of axially reciprocating along valve guide bushing at valve stem 3, scrape constantly scraping valve guide bushing inwall of carbon groove 5, the colloidal material that sticks on valve stem 3 and the valve guide bushing inwall is scraped in the carbon groove 5 by the to-and-fro motion of valve, colloidal material in exhaust process along with waste gas is discharged from cylinder.Thereby reduced colloidal material the gathering of valve stem 3, valve guide bushing and valve neck 2, avoided valve because the problem of carbon distribution causes stuck phenomenon.
Above-described only is preferred implementation of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (4)
1. scrape carbon formula exhaust valve, comprise valve retainer, valve neck, valve stem, valve stem is reciprocating in valve guide bushing, it is characterized in that: be provided with between described valve neck and the valve stem and scrape the carbon groove, the groove width of scraping the carbon groove is 4.8mm～5.2mm, and its groove depth is 0.4mm～0.6mm.
2. the carbon formula exhaust valve of scraping according to claim 1, it is characterized in that: the described length of carbon groove of scraping is greater than the axially movable ultimate range of valve stem described in the engine valve to-and-fro motion process.
3. the carbon formula exhaust valve of scraping according to claim 1 is characterized in that: be provided with the circular arc connecting body between described valve retainer and the valve neck.
4. the carbon formula exhaust valve of scraping according to claim 1 is characterized in that: the described carbon groove of scraping is provided with the circular cone that width is 0.9mm～1.1mm near an end of valve neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336943 CN202756041U (en) | 2012-07-12 | 2012-07-12 | Carbon-scrapping type exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336943 CN202756041U (en) | 2012-07-12 | 2012-07-12 | Carbon-scrapping type exhaust valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756041U true CN202756041U (en) | 2013-02-27 |
Family
ID=47735228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220336943 Expired - Fee Related CN202756041U (en) | 2012-07-12 | 2012-07-12 | Carbon-scrapping type exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888764A (en) * | 2016-04-13 | 2016-08-24 | 殷志成 | Stepped bar type valve |
-
2012
- 2012-07-12 CN CN 201220336943 patent/CN202756041U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888764A (en) * | 2016-04-13 | 2016-08-24 | 殷志成 | Stepped bar type 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: 20130227 Termination date: 20200712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |