CN204506544U - A kind of fuel tank of smooth gas discharge - Google Patents
A kind of fuel tank of smooth gas discharge Download PDFInfo
- Publication number
- CN204506544U CN204506544U CN201520040355.3U CN201520040355U CN204506544U CN 204506544 U CN204506544 U CN 204506544U CN 201520040355 U CN201520040355 U CN 201520040355U CN 204506544 U CN204506544 U CN 204506544U
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- Prior art keywords
- freeing pipe
- secondary chamber
- fuel
- chamber
- fuel tank
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Abstract
The utility model relates to a kind of fuel tank of smooth gas discharge, comprise main chamber and secondary chamber, the top in main chamber is connected by the top of shape of a saddle connecting portion with secondary chamber, the oil tank wall in main chamber is connected with pouring orifice, the roof in secondary chamber is provided with fuel-filling exhaust joint, fuel-filling exhaust joint comprises the freeing pipe inserted in secondary chamber and the exhaust elbow be positioned at outside the roof of secondary chamber, the exhaust lower end of elbow and the upper end of freeing pipe connect and are connected as a single entity, the lower end outer wall of exhaust elbow is connected with the flange stretched out to periphery, flange welding is on the roof in secondary chamber, the lower end of freeing pipe is higher than rated capacity oil level line and the lower port of freeing pipe is provided with the cover plate closed, the sidewall of freeing pipe is provided with the exhausr port of hollow out.The breathing area of exhausr port is greater than the sectional area of freeing pipe lower port.Inclination liquid level when fuel oil enters secondary chamber is pointed in the lower end of freeing pipe, the flow direction when opening direction of exhausr port enters secondary chamber back to fuel oil.This fuel tank can prevent fuel oil steam bubble from entering freeing pipe.
Description
Technical field
The utility model relates to a kind of fuel tank of smooth gas discharge, belongs to plastic fuel tank technical field.
Background technology
Due to the restriction that offgas duct and axle drive shaft are arranged, the fuel tank of four wheel drive or rear wheel drive vehicle adopts " shape of a saddle " structure mostly, namely fuel tank comprises main chamber and secondary chamber, and the top in main chamber is connected by the top of shape of a saddle connecting portion with secondary chamber, and the oil tank wall in main chamber is connected with pouring orifice.The neutral gear formed below shape of a saddle connecting portion is for arranging offgas duct and axle drive shaft.Saddle-shaped configuration can increase the rated capacity of fuel tank, meets certain travelled distance.
When fuel tank can arrangement space limited, during the height of fuel level during rated capacity lower than shape of a saddle connecting portion, fuel-filling exhaust joint needs the secondary chamber being arranged in fuel tank.How to ensure that the smooth in exhaust of fuel-filling exhaust joint can fuel up amount by what directly affect vehicle.
Traditional fuel-filling exhaust joint, the lower ending opening of its freeing pipe.After fuel oil is full of main chamber, then cover shape of a saddle connecting portion to go downstream and enter secondary chamber, catadromous fuel oil forms negative pressure at the lower port place of freeing pipe, causes a large amount of fuel oil bubble mixing materials to enter freeing pipe inside by the lower port of freeing pipe, blocks its exhaust performance.The splashing etc. produced when fuel oil impacts the shape of a saddle connecting portion during filling simultaneously also can cause oiling exhaust not smooth.Nozzle early jump rifle is caused, the fuel oil of rated capacity of cannot annotating time serious.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, provides a kind of fuel tank of smooth gas discharge, can prevent fuel oil steam bubble from entering freeing pipe.
For solving above technical matters, the fuel tank of a kind of smooth gas discharge of the present utility model, comprise main chamber and secondary chamber, the top in described main chamber is connected by the top of shape of a saddle connecting portion with described secondary chamber, the oil tank wall in described main chamber is connected with pouring orifice, the roof in described secondary chamber is provided with fuel-filling exhaust joint, described fuel-filling exhaust joint comprises the freeing pipe inserted in secondary chamber and the exhaust elbow be positioned at outside the roof of secondary chamber, the lower end of described exhaust elbow and the upper end of described freeing pipe connect and are connected as a single entity, the lower end outer wall of described exhaust elbow is connected with the flange stretched out to periphery, described flange welding is on the roof in described secondary chamber, the lower end of described freeing pipe is higher than rated capacity oil level line and the lower port of freeing pipe is provided with the cover plate closed, the sidewall of described freeing pipe is provided with the exhausr port of hollow out.
Relative to prior art, the utility model achieves following beneficial effect: when the lower port of freeing pipe is as exhausr port, is blocked by some cross-sectional planes as long as fuel oil steam bubble enters in freeing pipe, namely the exhaust passage of top can be blocked completely.Exhausr port of the present utility model is positioned at the sidewall of freeing pipe, position is higher than lower port on the one hand, fuel oil steam bubble is not easy to enter in exhausr port, on the other hand, even if part fuel oil steam bubble enters in exhausr port and is blocked by a certain cross-sectional plane of exhausr port bottom, because exhausr port will extend a segment distance along the elevation of sidewall, the exhaust passage of top remains unobstructed.
As preferred version of the present utility model, the breathing area of described exhausr port is greater than the sectional area of described freeing pipe lower port.Enough free air capacities can be ensured.
As preferred version of the present utility model, the inclination liquid level formed when fuel oil enters secondary chamber from main chamber by the overflow of shape of a saddle connecting portion is pointed in the lower end of described freeing pipe.Freeing pipe is tilting can make exhausr port more away from oil level line during rated capacity.
As preferred version of the present utility model, the flow direction when opening direction of described exhausr port enters described secondary chamber back to fuel oil from described shape of a saddle connecting portion.The fuel oil splashed can be avoided to drip or fuel oil steam bubble enters exhausr port.
Accompanying drawing explanation
Be described in further detail the utility model below in conjunction with the drawings and specific embodiments, accompanying drawing only provides reference and explanation use, is not used to limit the utility model.
Fig. 1 is the structural representation of the fuel tank of the utility model smooth gas discharge.
Fig. 2 is the block diagram of fuel-filling exhaust joint in Fig. 1.
In figure: 1. main chamber; 2. secondary chamber; 3. freeing pipe; 3a. exhausr port; 4. be vented elbow; 5. flange; 6. cover plate.
Detailed description of the invention
As depicted in figs. 1 and 2, the fuel tank of the utility model smooth gas discharge comprises main chamber 1 and secondary chamber 2, the top in main chamber 1 is connected by the top of shape of a saddle connecting portion with secondary chamber 2, the oil tank wall in main chamber 1 is connected with pouring orifice, the roof in secondary chamber 2 is provided with fuel-filling exhaust joint, fuel-filling exhaust joint comprises the freeing pipe 3 inserted in secondary chamber 2 and the exhaust elbow 4 be positioned at outside the roof of secondary chamber 2, the exhaust lower end of elbow 4 and the upper end of freeing pipe 3 connect and are connected as a single entity, the lower end outer wall of exhaust elbow 4 is connected with the flange 5 stretched out to periphery, flange 5 is welded on the roof in secondary chamber 2, the lower end of freeing pipe 3 is higher than rated capacity oil level line and the lower port of freeing pipe 3 is provided with the cover plate closed, the sidewall of freeing pipe 3 is provided with the exhausr port 3a of hollow out.
The breathing area of exhausr port 3a is greater than the sectional area of freeing pipe 3 lower port, to ensure enough free air capacities.
The inclination liquid level formed when fuel oil enters secondary chamber 2 from main chamber 1 by the overflow of shape of a saddle connecting portion is pointed in the lower end of freeing pipe 3.Freeing pipe 3 is tilting can make exhausr port 3a more away from oil level line during rated capacity.
The flow direction when opening direction of exhausr port 3a enters secondary chamber 2 back to fuel oil from shape of a saddle connecting portion, can avoid the fuel oil splashed to drip or fuel oil steam bubble enters exhausr port 3a.
Exhausr port 3a is positioned at the sidewall of freeing pipe 3, position is higher than lower port on the one hand, fuel oil steam bubble is not easy to enter in exhausr port 3a, on the other hand, even if part fuel oil steam bubble enters in exhausr port 3a and is blocked by a certain cross-sectional plane of exhausr port bottom, because exhausr port 3a will extend a segment distance along the elevation of sidewall, the exhaust passage of top remains unobstructed.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (4)
1. the fuel tank of a smooth gas discharge, comprise main chamber and secondary chamber, the top in described main chamber is connected by the top of shape of a saddle connecting portion with described secondary chamber, the oil tank wall in described main chamber is connected with pouring orifice, it is characterized in that: the roof in described secondary chamber is provided with fuel-filling exhaust joint, described fuel-filling exhaust joint comprises the freeing pipe inserted in secondary chamber and the exhaust elbow be positioned at outside the roof of secondary chamber, the lower end of described exhaust elbow and the upper end of described freeing pipe connect and are connected as a single entity, the lower end outer wall of described exhaust elbow is connected with the flange stretched out to periphery, described flange welding is on the roof in described secondary chamber, the lower end of described freeing pipe is higher than rated capacity oil level line and the lower port of freeing pipe is provided with the cover plate closed, the sidewall of described freeing pipe is provided with the exhausr port of hollow out.
2. the fuel tank of smooth gas discharge according to claim 1, is characterized in that: the breathing area of described exhausr port is greater than the sectional area of described freeing pipe lower port.
3. the fuel tank of smooth gas discharge according to claim 1, is characterized in that: the inclination liquid level formed when fuel oil enters secondary chamber from main chamber by the overflow of shape of a saddle connecting portion is pointed in the lower end of described freeing pipe.
4. the fuel tank of smooth gas discharge according to claim 3, is characterized in that: the flow direction when opening direction of described exhausr port enters described secondary chamber back to fuel oil from described shape of a saddle connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520040355.3U CN204506544U (en) | 2015-01-21 | 2015-01-21 | A kind of fuel tank of smooth gas discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520040355.3U CN204506544U (en) | 2015-01-21 | 2015-01-21 | A kind of fuel tank of smooth gas discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204506544U true CN204506544U (en) | 2015-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520040355.3U Active CN204506544U (en) | 2015-01-21 | 2015-01-21 | A kind of fuel tank of smooth gas discharge |
Country Status (1)
| Country | Link |
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| CN (1) | CN204506544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406524A (en) * | 2020-11-13 | 2021-02-26 | 亚普汽车部件股份有限公司 | Internal and external exhaust system of plastic fuel tank and connecting method |
-
2015
- 2015-01-21 CN CN201520040355.3U patent/CN204506544U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406524A (en) * | 2020-11-13 | 2021-02-26 | 亚普汽车部件股份有限公司 | Internal and external exhaust system of plastic fuel tank and connecting method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |