CN101509441A - Dump valve mounted on vehicle fuel tank vent pipe - Google Patents
Dump valve mounted on vehicle fuel tank vent pipe Download PDFInfo
- Publication number
- CN101509441A CN101509441A CNA2009101034146A CN200910103414A CN101509441A CN 101509441 A CN101509441 A CN 101509441A CN A2009101034146 A CNA2009101034146 A CN A2009101034146A CN 200910103414 A CN200910103414 A CN 200910103414A CN 101509441 A CN101509441 A CN 101509441A
- Authority
- CN
- China
- Prior art keywords
- valve
- plug
- fuel tank
- valve port
- toppling
- 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.)
- Pending
Links
- 239000002828 fuel tank Substances 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides a dump valve installed on a vehicle fuel tank vent pipe, which comprises a shell, a first vent pipe joint and a second vent pipe joint, wherein the first vent pipe joint and the second vent pipe joint are communicated with a valve cavity in the shell, a valve plug, a steel ball and a valve seat are arranged in the valve cavity, a valve port is arranged at the communication part of the valve cavity and the first vent pipe joint, a plug is arranged on one side of the valve plug and matched with the valve port, the steel ball is positioned between the other side of the valve plug and an inverted conical valve seat, and when the plug is matched with the valve port, the. The matching structure between the plug and the valve port is more reasonable, the cut-off sealing is safer and more reliable, and the fuel in the fuel tank can be effectively prevented from overflowing into the carbon tank when the vehicle body is toppled.
Description
Technical field
The present invention relates to a kind of mechanical valve, especially be installed on the toppling valve on the vehicle fuel tank snorkel.
Background technique
On vehicle, for preventing that the fuel vapor in the fuel tank directly is discharged into befouling environment in the atmosphere, need draw a breathing pipe from fuel tank links to each other with canister, canister is collected fuel vapor and is relied on the negative pressure of engine charge end fuel vapor discharge to be arrived engine air inlet tube in good time, with the combustion chambers burn that enters motor after the air mixing.Simultaneously, when the amount of fuel in the fuel tank reduced to a certain degree, air entered fuel tank by canister the pressure in the fuel tank is compensated.
When fuel tank was toppled over car body, the fuel oil in the fuel tank might overflow and enter into breathing pipe, for the fuel oil that prevents to overflow enters canister, generally also need on the breathing pipe between fuel tank and the canister toppling valve be installed.When the tilting of car body angle surpassed setting value, toppling valve did not enter in the canister fuel oil path blockade between fuel tank and the canister, thereby the active carbon in the canister is played a protective role.
On the existing vehicle on the fuel tank snorkel common toppling valve mainly form by loam cake, lower cover, inner cap and steel ball, loam cake with form valve pocket after lower cover is connected, loam cake, lower cover have connection for breather pipe respectively, inner cap is positioned at valve pocket, one side of inner cap has plug to match with the valve port of loam cake inwall, and steel ball is between the inverted cone valve seat of the opposite side of inner cap and lower cover.Toppling valve is fixed on the car body, and when car body was toppled over, steel ball rolled on the inclined-plane of inverted cone valve seat, promotes inner cap and moves to the loam cake direction, and the plug that covers in making cooperates with the valve port of loam cake, and valve port is closed.Because the valve port of loam cake be conical, in the plug that covers for spherical, by the time contacting between plug and the valve port be the line contact, sealing is also unreliable; Loam cake is to be connected with fuel tank in addition, lower cover connects canister, if the liquid level in the fuel tank is higher than toppling valve (as on riding-type motorcycle), when fuel oil overflows, the pressure that fuel oil produces is bigger, is enough to overcome the power that steel ball covers in acting on, and makes plug close incessantly valve port easily, fuel oil is easy to enter canister through toppling valve, influences the Acceptable life of active carbon in the canister.
Summary of the invention
The purpose of this invention is to provide a kind of toppling valve that is installed on the vehicle fuel tank snorkel, this toppling valve is safer, reliable by time sealing, thereby the fuel oil that overflows in the fuel tank can avoid vehicle to topple over more effectively the time enters in the canister.
For achieving the above object, the toppling valve that is installed on the vehicle fuel tank snorkel provided by the invention, first, second connection for breather pipe that includes housing and be connected with valve pocket in the housing, be provided with valve plug, steel ball and valve seat in the valve pocket, valve pocket is provided with valve port with the place of connection of first connection for breather pipe, one side of valve plug is provided with plug and valve port matches, steel ball is between the opposite side and inverted cone valve seat of valve plug, when cooperating between plug and the valve port, upwards be that continuous face contacts in week between plug and the valve port.
Adopt the face contact gear ratio to adopt line to contact the better reliability that it is closed between plug and the valve port, when car body was toppled over, even also have small gap between plug and the valve port, according to the fluidics principle, the throughput that sees through was also quite little, and therefore sealing is more reliable.
As a kind of preferred implementation, plug on the valve plug and the fitting surface between the valve port can be conical surfaces, but coned face preferably.Adopt conical surface, particularly coned face, the interaction force between plug and the valve port on surface of contact is even, consistent, thereby makes contact tightr, better tightness.
As another kind of preferred implementation, housing is formed by the relative welding with lower cover of loam cake, and first connection for breather pipe is connected as a single entity with loam cake and is used for linking to each other with canister, and second connection for breather pipe is connected as a single entity with lower cover and is used for linking to each other with fuel tank.Topple over fuel oil when car body and overflow when entering into valve pocket, oil pressure is with steel ball homonymy ground masterpiece to be used on the valve plug, makes to contact closelyr between plug and the valve port on the valve plug, can prevent more effectively that fuel oil from entering into canister.
The technique effect that the present invention obtains is: the cooperating structure between plug and the valve port is more reasonable, and safer, reliable by sealing, the fuel oil in the time of effectively avoiding car body to topple in the fuel tank overflows and enters in the canister.
Description of drawings
Fig. 1 is a structural representation of the present invention, also is the view of car body when being in level and travelling;
Fig. 2 is the plan view of valve seat 8 among Fig. 1;
The view that Fig. 3 is the present invention when car body is in small angle inclination and travels;
Fig. 4 is the present invention at travel schematic representation when being in threshold state of tilting of car body;
To be the present invention drive to the schematic representation that is in when closing cut-off state at tilting of car body to Fig. 5;
Fig. 6 is that the present invention is installed in the schematic representation on the vehicle frame of two-wheeled motor vehicle;
Among the figure: 1. loam cake; 2. lower cover; 3. first connection for breather pipe; 4. second connection for breather pipe; 5. valve pocket; 6. valve plug; 7. steel ball; 8. valve seat; 9. valve port; 10. plug; 11. installation sleeve; 12. bar shaped earhole; 13. canister; 14. fuel tank; 15. cross recess.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, toppling over valve housing is formed with lower cover 2 relative weldings by loam cake 1, all-in-one-piece is connected with first connection for breather pipe 3 on the loam cake 1, all-in-one-piece is connected with second connection for breather pipe 4 on the lower cover 2, the inner chamber of housing is valve pocket 5, valve pocket 5 is connected with first connection for breather pipe 3 and second connection for breather pipe 4, be provided with valve plug 6 in the valve pocket 5, steel ball 7 and valve seat 8, valve pocket 5 is provided with valve port 9 with the place of connection of first connection for breather pipe 3, one side of valve plug 6 is provided with plug 10 and matches with valve port 9, steel ball 7 when cooperating between plug 10 and the valve port 9, upwards is that continuous face contacts in week between plug 10 and the valve port 9 between the opposite side and inverted cone valve seat 8 of valve plug 6.
Employing face contacts the better reliability that it is closed between plug 10 and the valve port 9, and when car body was toppled over, even also have small gap between plug 10 and the valve port 9, according to the fluidics principle, the throughput that sees through was also quite little, and therefore sealing is more reliable.
Fitting surface between plug 10 and the valve port 9 can be a conical surface, but coned face preferably, and the interaction force on surface of contact is even, consistent between plug 10 and the valve port 9 like this, thereby makes contact tightr, better tightness.
As shown in Figure 2, valve seat 8 all-in-one-pieces are arranged on the inner bottom part of housing, vertically have cross recess 15 on the valve seat 8, and cross recess 15 has the effect of conducting air-flow, make the gas stream general character between second connection for breather pipe 4 and the valve pocket 5 better.
Referring to Fig. 1, Fig. 6, be with installation sleeve 11 on the housing, installation sleeve 11 is provided with bar shaped earhole 12.During use, toppling valve is connected on the vehicle frame stably by the bar shaped earhole 12 on the installation sleeve 11, and first connection for breather pipe 3 links to each other with canister 13, and second connection for breather pipe 4 links to each other with fuel tank 14.
When tilting of car body but angle also hour, steel ball 7 does not produce displacement on valve seat 8, valve plug 6 does not move for 5 li at valve pocket, valve port 9 is in open mode, as shown in Figure 3.When tilting of car body angle continuation increasing, steel ball 7 moves to valve plug 6 directions under the tapered slope effect of valve seat 8, promotes valve plug 6 and moves to valve port 9 directions, and the plug 10 on the valve plug 6 enters valve port 9, and valve port 9 is in the threshold state of closing, as shown in Figure 4.The tilting of car body angle further strengthens, and the plug 10 on the valve plug 6 closely contacts with valve port 9, and then valve port 9 is in fully by sealing state, as shown in Figure 5.Even there is fuel oil to overflow when entering into valve pocket 5, because oil pressure is with steel ball 7 homonymy ground masterpiece to be used on the valve plug 6, make to contact closelyr between plug 10 and the valve port 9, can prevent more effectively that fuel oil from entering into canister 13.
Claims (6)
1. toppling valve that is installed on the vehicle fuel tank snorkel, comprise housing and first, second connection for breather pipe that is connected with valve pocket in the housing, be provided with valve plug, steel ball and valve seat in the valve pocket, valve pocket is provided with valve port with the place of connection of first connection for breather pipe, one side of valve plug is provided with plug and valve port matches, steel ball is characterized in that between the opposite side and inverted cone valve seat of valve plug: when cooperating between described plug and the valve port, upwards be that continuous face contacts in week between plug and the valve port.
2. the toppling valve that is installed on the vehicle fuel tank snorkel as claimed in claim 1 is characterized in that: plug on the described valve plug and the fitting surface between the valve port are conical surface.
3. the toppling valve that is installed on the vehicle fuel tank snorkel as claimed in claim 2 is characterized in that: plug on the described valve plug and the fitting surface between the valve port are coned face.
4. the toppling valve that is installed on the vehicle fuel tank snorkel as claimed in claim 1, it is characterized in that: described housing is formed by the relative welding with lower cover of loam cake, first connection for breather pipe is connected as a single entity with loam cake and is used for linking to each other with canister, and second connection for breather pipe is connected as a single entity with lower cover and is used for linking to each other with fuel tank.
5. the toppling valve that is installed on the vehicle fuel tank snorkel as claimed in claim 1 is characterized in that: described valve seat all-in-one-piece is arranged on the inner bottom part of housing, vertically has cross recess on the valve seat.
6. the toppling valve that is installed on the vehicle fuel tank snorkel as claimed in claim 1 is characterized in that: be with installation sleeve on the described housing, installation sleeve is provided with the bar shaped earhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101034146A CN101509441A (en) | 2009-03-20 | 2009-03-20 | Dump valve mounted on vehicle fuel tank vent pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101034146A CN101509441A (en) | 2009-03-20 | 2009-03-20 | Dump valve mounted on vehicle fuel tank vent pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101509441A true CN101509441A (en) | 2009-08-19 |
Family
ID=41001951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101034146A Pending CN101509441A (en) | 2009-03-20 | 2009-03-20 | Dump valve mounted on vehicle fuel tank vent pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101509441A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852150A (en) * | 2010-05-25 | 2010-10-06 | 重庆隆鑫机车有限公司 | Three-way pipe used in control pipelines for evaporation emission of fuel oil |
| CN101907173A (en) * | 2010-07-09 | 2010-12-08 | 李娟� | Roll stop valve |
| CN101943287A (en) * | 2010-09-26 | 2011-01-12 | 力帆实业(集团)股份有限公司 | Double-ball type anti-tilting valve in fuel steam collection system of motorcycle |
| CN102434328A (en) * | 2011-11-25 | 2012-05-02 | 浙江春风动力股份有限公司 | Valve device of fuel tank |
| CN113251172A (en) * | 2021-05-11 | 2021-08-13 | 亚普汽车部件股份有限公司 | Float-free mechanical valve with pressure maintaining and anti-overturning leakage functions |
| TWI771070B (en) * | 2020-06-23 | 2022-07-11 | 日商山葉發動機股份有限公司 | Straddled vehicle |
-
2009
- 2009-03-20 CN CNA2009101034146A patent/CN101509441A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852150A (en) * | 2010-05-25 | 2010-10-06 | 重庆隆鑫机车有限公司 | Three-way pipe used in control pipelines for evaporation emission of fuel oil |
| CN101852150B (en) * | 2010-05-25 | 2012-06-13 | 重庆隆鑫机车有限公司 | Three-way pipe used in control pipelines for evaporation emission of fuel oil |
| CN101907173A (en) * | 2010-07-09 | 2010-12-08 | 李娟� | Roll stop valve |
| CN101943287A (en) * | 2010-09-26 | 2011-01-12 | 力帆实业(集团)股份有限公司 | Double-ball type anti-tilting valve in fuel steam collection system of motorcycle |
| CN101943287B (en) * | 2010-09-26 | 2012-02-08 | 力帆实业(集团)股份有限公司 | Double-ball type anti-tilting valve in fuel steam collection system of motorcycle |
| CN102434328A (en) * | 2011-11-25 | 2012-05-02 | 浙江春风动力股份有限公司 | Valve device of fuel tank |
| CN102434328B (en) * | 2011-11-25 | 2013-12-25 | 浙江春风动力股份有限公司 | Valve device of fuel tank |
| TWI771070B (en) * | 2020-06-23 | 2022-07-11 | 日商山葉發動機股份有限公司 | Straddled vehicle |
| CN113251172A (en) * | 2021-05-11 | 2021-08-13 | 亚普汽车部件股份有限公司 | Float-free mechanical valve with pressure maintaining and anti-overturning leakage functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090819 |