CN201102467Y - Vehicle fuel tank - Google Patents
Vehicle fuel tank Download PDFInfo
- Publication number
- CN201102467Y CN201102467Y CNU2007201140387U CN200720114038U CN201102467Y CN 201102467 Y CN201102467 Y CN 201102467Y CN U2007201140387 U CNU2007201140387 U CN U2007201140387U CN 200720114038 U CN200720114038 U CN 200720114038U CN 201102467 Y CN201102467 Y CN 201102467Y
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- CN
- China
- Prior art keywords
- fuel tank
- housing
- diaphragm
- vehicle according
- fuel
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- 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.)
- Expired - Lifetime
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses a fuel tank of an automobile which belongs to the technical field of automobile fuel supplying systems. The problems of a fuel tank of a present automobile that auxiliary pressure is formed in the fuel tank, the fuel tank can be deformed easily and a fuel pump supplies an engine with fuel inconveniently which are caused by the consumption of the inner fuel are solved. A technical proposal adopted is the fuel tank of the automobile includes the tank body and is characterized in that a pressure balancing device is arranged on the tank body. The pressure balancing device communicates the external and the internal laterals of the tank body in one way.
Description
Technical field
The utility model relates to the oil supply component of automobile, relates in particular to the fuel tank on the automobile.
Technical background
Fuel oil on the automobile generally is to be stored in the osed top fuel tank, also is provided with fuel charger in fuel tank, is used for to engine oil.Existing fuel tank all is osed tops, generally can not communicate with the external world after filling it up with oil in the fuel tank.Along with the work of automotive engine, the fuel oil in the fuel tank can progressively be consumed, and because fuel tank does not communicate with the external world, along with tailing off of oil mass, can form secondary a pressure in fuel tank.Particularly automobile is after using for a long time, and the one, bad fuel consumption, the 2nd, the temperature in the fuel tank is higher, and after automobile stopped to start certain hour, the temperature in the fuel tank descended, and this moment, formed secondary pressure value in fuel tank was bigger.On the one hand, because the wall body of fuel tank is generally thinner, depress in so high pair, pressure deforms fuel tank because of bearing incessantly sometimes, and perhaps under the impact that is subjected to external force, collapse-deformation very easily takes place fuel tank.On the other hand, again because secondary existence of pressing in the fuel tank needs to use more high-performance fuel charger to engine oil.
Summary of the invention
For overcoming the above-mentioned defective that existing fuel tank of vehicle is had, the utility model technical issues that need to address: the fuel tank of vehicle that a kind of new structure is provided, in the automotive engine working process, be difficult for producing secondary the pressure in the fuel tank, fuel tank is not yielding yet, and fuel charger can be the automotive engine fuel feeding more swimmingly.
For solving the problems of the technologies described above the technical solution of the utility model: a kind of fuel tank of vehicle, comprise casing, it is characterized in that, on casing, be provided with pressure equaliser, the interior outside of the unidirectional communication casing of this pressure equaliser.The inside that is arranged so that fuel tank of vehicle and the exterior of pressure equaliser, and the unidirectional communication casing of pressure equaliser is meant that the gas in the fuel tank outside can be by the internal flow of pressure equaliser to casing, and the counter-flow of gas is cut off.Like this, can not form secondary the pressure because of the consumption of fuel oil in casing in the fuel tank, guarantee the normal fuel injection of fuel charger to automotive engine, casing also is difficult for deforming.
As preferably, described pressure equaliser is arranged on the pump cover of fuel charger set on the casing.Because the pump cover of fuel charger has bigger thickness with respect to the casing of fuel tank, be convenient to the stable setting of balancing device like this.
As preferably, described pressure equaliser comprises the osed top housing, and housing is provided with and extraneous admission port that communicates and the air extractor duct that communicates with fuel tank internal, is provided with diaphragm in housing, diaphragm flexibly roof pressure on described admission port.On admission port, when after the predetermincd tension of the formed pressure of fuel tank internal cause pressure reduction greater than diaphragm, extraneous air can enter in the fuel tank diaphragm with certain predetermincd tension roof pressure, with the space in the compensation fuel tank.
As preferably, the inboard of described diaphragm is provided with compression spring, and the two ends of compression spring act on respectively on diaphragm and the housing.Compression spring can make diaphragm, and roof pressure is on described admission port more quietly, and diaphragm can be made by softer material, improved the comfort feature of diaphragm processing.
As preferably, the inner of described housing is provided with in one to catch, and described air extractor duct is formed on this catch, and an end roof pressure of described compression spring is on catch.The catch that is provided with has made things convenient for the support of compression spring, helps guaranteeing the stability of compression spring.
As preferably, the wall body of described catch and housing is connected as a single entity.Catch is formed directly into the inner end of housing, and is convenient for production quick.
As preferably, described housing is round barrel shape, and described admission port is positioned at the center position of the outer end of housing, and this admission port axially has certain length housing, is provided with filter core in admission port.The filter core that is provided with can the airborne impurity of filtering, in order to avoid impurity enters in the fuel tank, has guaranteed the cleaning of fuel oil.
As preferably, be provided with check valve in the described admission port.The check valve that is provided with can further be avoided reverse air flow, has guaranteed to have in the fuel tank certain pressure.
As preferably, the periphery of described diaphragm is fixedly connected on the wall body of housing, and diaphragm is made by elastomeric material, is provided with open-work on diaphragm.Like this, diaphragm can more stably be connected on the housing, and inlet air can enter into air gate by open-work from above-mentioned admission port, and finally enters in the fuel tank.
As preferably, the inner diameter of described admission port is less than the outer end diameter.The architectural feature of admission port has made things convenient for filter core has been set in admission port, has adapted to the gas flow direction.
Therefore, the beneficial effects of the utility model:
1, since on fuel tank, be provided with can unidirectional communication fuel tank in the pressure equaliser in the outside, consumption along with fuel oil in the fuel tank, extraneous air enters in the fuel tank by pressure equaliser under the formed differential pressure action inside and outside fuel tank, with compensation formed space in fuel tank, thereby reduce formed secondary pressure the in the fuel tank, fuel tank is difficult for deforming, even and fuel tank also difficult collapse-deformation that takes place under the impact that is subjected to external force.
2, again owing to the consumption along with fuel oil, formed secondary the pressure is not very big in fuel tank, and this provides convenience for fuel charger to the automotive engine fuel feeding, and the power of fuel charger does not need too big.
Description of drawings
Accompanying drawing 1 is the fuel charger in the fuel tank of vehicle, and its pump cover is provided with pressure equaliser.
Accompanying drawing 2 is longitudinal sectional views of pressure equaliser.
The specific embodiment
The main body of the utility model fuel tank of vehicle is an osed top casing, is provided with fuel charger in the casing, and the pump cover 1 on the fuel charger is fixedly connected on the casing, and towards the outside of casing.
In conjunction with Fig. 1, Fig. 2, on described pump cover 1, be provided with a pressure equaliser, the interior outside that this pressure equaliser can unidirectional communication casing.
The structure of pressure equaliser is one to be closure casing 2 cylindraceous, and the center position in the outer end of housing 2 is provided with admission port 4, and inner end is provided with air extractor duct 10.Be provided with circular diaphragm 6 in the inside of housing 2, be fixed together with housing 2 around it, diaphragm 6 flexibly roof pressure also is provided with open-work 7 on diaphragm 6 on above-mentioned admission port 4.
The inner end of described housing 2 is provided with in one to catch 9, and catch 9 is an one with the wall body of housing 2, and above-mentioned air extractor duct 10 is formed on the center position of catch 9.Be provided with compression spring 8 between described diaphragm 6 and catch 9, the two ends of compression spring 8 act on respectively on diaphragm 6 and the catch 9.
Above-mentioned air extractor duct 10 housing 2 axially on have certain length, and the inner structure of air extractor duct 9 is stepped, its inner diameter is less than the diameter of its outer end.In this air extractor duct 9, also be provided with the filter core 2 that is used for filtered air impurity.
Above-mentioned diaphragm 6 generally is to be made by softer certain elastomeric material that has, behind inside and outside formation pressure reduction at fuel tank, extraneous air can be oppressed diaphragm 6, and diaphragm 6 and described admission port are separated, and the air that enters in the fuel tank can oppositely not flow out in fuel tank again.In order further to increase the one-way of this pressure equaliser, in above-mentioned admission port 4, also be provided with a check valve 5 that can make gas flow into fuel tank internal from the fuel tank outside.
Claims (10)
1, a kind of fuel tank of vehicle comprises casing, it is characterized in that, is provided with pressure equaliser on casing, the interior outside of the unidirectional communication casing of this pressure equaliser.
2, fuel tank of vehicle according to claim 1 is characterized in that, described pressure equaliser is arranged on the pump cover (1) of fuel charger set on the casing.
3, fuel tank of vehicle according to claim 1 and 2, it is characterized in that, described pressure equaliser comprises osed top housing (2), housing (2) is provided with and extraneous admission port (4) that communicates and the air extractor duct (10) that communicates with fuel tank internal, in housing (2), be provided with diaphragm (6), diaphragm (6) flexibly roof pressure on described admission port (4).
4, fuel tank of vehicle according to claim 3 is characterized in that, the inboard of described diaphragm (6) is provided with compression spring (8), and the two ends of compression spring (8) act on respectively on diaphragm (6) and the housing (2).
5, fuel tank of vehicle according to claim 4 is characterized in that, the inner of described housing (2) is provided with in one to catch (9), and described air extractor duct (10) is formed on this catch (9), and an end roof pressure of described compression spring (8) is on catch (9).
6, fuel tank of vehicle according to claim 5 is characterized in that, described catch (9) is connected as a single entity with the wall body of housing (2).
7, fuel tank of vehicle according to claim 3, it is characterized in that, described housing (2) is round barrel shape, described admission port (4) is positioned at the center position of the outer end of housing (2), this admission port (4) axially has certain length housing (2), is provided with filter core (3) in admission port (4).
8, fuel tank of vehicle according to claim 7 is characterized in that, is provided with check valve (5) in the described admission port (4).
9, fuel tank of vehicle according to claim 7 is characterized in that, the periphery of described diaphragm (6) is fixedly connected on the wall body of housing (2), and diaphragm (6) is made by elastomeric material, is provided with open-work (7) on diaphragm (6).
10, fuel tank of vehicle according to claim 7 is characterized in that, the inner diameter of described admission port (4) is less than the outer end diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201140387U CN201102467Y (en) | 2007-08-30 | 2007-08-30 | Vehicle fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201140387U CN201102467Y (en) | 2007-08-30 | 2007-08-30 | Vehicle fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201102467Y true CN201102467Y (en) | 2008-08-20 |
Family
ID=39949487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201140387U Expired - Lifetime CN201102467Y (en) | 2007-08-30 | 2007-08-30 | Vehicle fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201102467Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086880A1 (en) * | 2011-12-12 | 2013-06-20 | 中联重科股份有限公司 | Oil tank for excavator and excavator having same |
| CN105383627A (en) * | 2014-08-25 | 2016-03-09 | 株式会社岛野 | Handle type bicycle hydraulic operation apparatus |
| US10550858B2 (en) | 2014-08-25 | 2020-02-04 | Shimano Inc. | Bicycle control device |
-
2007
- 2007-08-30 CN CNU2007201140387U patent/CN201102467Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086880A1 (en) * | 2011-12-12 | 2013-06-20 | 中联重科股份有限公司 | Oil tank for excavator and excavator having same |
| CN105383627A (en) * | 2014-08-25 | 2016-03-09 | 株式会社岛野 | Handle type bicycle hydraulic operation apparatus |
| CN105383627B (en) * | 2014-08-25 | 2019-03-26 | 株式会社岛野 | End formula bicycle hydraulic operating device |
| US10550858B2 (en) | 2014-08-25 | 2020-02-04 | Shimano Inc. | Bicycle control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080820 |