US20120217249A1 - Fuel tank - Google Patents
Fuel tank Download PDFInfo
- Publication number
- US20120217249A1 US20120217249A1 US13/499,980 US201013499980A US2012217249A1 US 20120217249 A1 US20120217249 A1 US 20120217249A1 US 201013499980 A US201013499980 A US 201013499980A US 2012217249 A1 US2012217249 A1 US 2012217249A1
- Authority
- US
- United States
- Prior art keywords
- fuel tank
- fuel
- partitioning walls
- liquid
- containers
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/03006—Gas tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0147—Shape complex
- F17C2201/0152—Lobes
Definitions
- This invention relates to a fuel tank.
- the liquefied fuel In an internal combustion engine that uses liquefied fuel, the liquefied fuel is stored in a tank. However, when the temperature is elevated, the liquefied fuel is gasified to elevate the pressure in the tank which may cause the tank to burst. Therefore, for example, the ratio of gas space to the whole internal volume of the tank with liquefied petroleum gas (LPG) must not be more than 85 percent, according to the Japanese standard for handling LPG automobiles.
- LPG liquefied petroleum gas
- a space of a predetermined ratio must remain in the fuel tank that stores the liquefied fuel after the tank has been filled with liquefied fuel.
- float-type conventional fuel tanks are used for preventing overfilling.
- Patent literature (PTL) 1 discloses a technique that utilizes a liquid surface sensor. Further, technologies that provide an air chamber in the fuel tank have been disclosed in PTLs 2 and 3.
- the fuel that is filled in the fuel tank up to a predetermined amount is detected by a liquid level sensor, and a fuel feed pump is stopped by a special device.
- the technologies of PTLs 2 and 3 relate to the fuel tanks having complex structures.
- a fuel tank wherein the fuel tank is of a form in which a number of cylindrical containers are arranged in parallel and are coupled together in a manner that the cylindrical containers neighboring each other share common partitioning walls, respectively; each of the partitioning walls has a passage through which the neighboring cylindrical containers are communicated with each other; the upper ends of the passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the cylindrical containers; and when the liquid is fed into the fuel tank, space of a predetermined volume is formed on the surface of the liquid.
- the injected liquefied fuel flows through the communication passages of the inner partitioning walls and is injected into the cylindrical containers.
- the upper ends of the communication passages of the inner partitioning walls are formed leaving partly the inner partitioning walls so that the liquefied gas fuel will not enter into the upper parts of the cylindrical containers.
- the position of the surface of the liquefied fuel injected into the cylindrical containers becomes the position of the upper end portions, and gas formed by the gasification of the liquefied fuel remains over the surface of the liquid. That is, a gaseous space forms on the surface of the liquid in each cylindrical container.
- the ratio of the gaseous space to the whole internal volume of the tank has been specified for filling the storage tank with the liquefied fuel.
- a fuel tank wherein the fuel tank is of a form in which a number of spherical containers are arranged in parallel and are coupled together in a manner that the spherical containers neighboring each other share common partitioning walls, respectively; each of the partitioning walls has a passage through which the neighboring spherical containers are communicated with each other; the upper ends of the passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the spherical containers; and when the liquid is fed into the fuel tank, space of a predetermined volume is formed on the surface of the liquid.
- the fuel tank is of a form in which a number of spherical containers are arranged in parallel and are coupled together to provide the fuel tank that exhibits the same effects as those of the fuel tank described in claim 1 .
- the fuel tank of claim 1 or 2 wherein the volume of the space is not less than 15 percent of the whole internal volume of the fuel tank.
- the invention of claim 3 provides the fuel tank which when, for example, the LPG is to be stored, meets the filling ratio of not more than 85 percent specified under the Japanese standard for handling LPG automobiles.
- the inventions described in claims provide a fuel tank of a simple structure without any special device but having a space of a predetermined ratio after the fuel tank has been filled with the liquefied fuel.
- FIG. 1 is a sectional view schematically illustrating the constitution of an embodiment of when the invention is applied to a fuel tank.
- FIG. 2 is a sectional view illustrating the fuel tank of FIG. 1 in another cross section.
- FIG. 3 is a perspective view showing the appearance of the fuel tank of FIG. 1 , wherein I-I is the sectional position of FIG. 1 and II-II is the sectional position of FIG. 2 .
- FIG. 4 ] (A) and 4 (B) are sectional views schematically illustrating the constitutions of other embodiments of when the invention is applied to the fuel tank.
- FIG. 5 is a view schematically illustrating the constitution of a further embodiment of when the invention is applied to the fuel tank, wherein (A) is a plan view of an outer shape and (B) is an elevation in cross section at a position of in (A).
- FIG. 3 shows the appearance of fuel tank 1 of the invention for storing a liquefied fuel such as LPG, ammonia, etc.
- Fuel tank 1 is of a form in which a number of cylindrical containers are arranged in parallel and are coupled together.
- FIG. 2 is a sectional view of a portion indicated by an arrow II-II in FIG. 3 , and shows a portion where there is no communication passage in inner partitioning walls 8 .
- the cylindrical containers as is well known, have excellent resistance against the pressure, and the thickness of the cylindrical containers can be easily designed so as to satisfy the standards of pressure resistance. Namely, fuel tank 1 can be easily designed to satisfy the standards of pressure resistance required for the liquefied fuel.
- FIG. 1 is a sectional view of a portion indicated by an arrow I-I in FIG. 3 , and shows a portion having communication passages in inner partitioning walls 8 .
- injected liquefied fuel 5 flows through the communication passages of the inner partitioning walls and is injected into the cylindrical containers.
- Upper ends 9 of the communication passages of the inner partitioning walls are formed leaving partly the inner partitioning walls so that liquefied gas fuel 5 will not enter into the upper parts of the cylindrical containers.
- the position of surface 6 of liquefied fuel 5 injected into the cylindrical containers becomes the position of upper end portions 9 .
- gaseous space formed chiefly by the gasification of the liquefied fuel stays over surface 6 of the liquid in the cylindrical containers; i.e., gaseous space 7 is formed therein.
- the rightmost cylindrical container only has vent 4 , and the liquefied fuel is filled therein. If the liquefied fuel passes through vent 4 , a cut-off gas valve (not shown) provided in vent 4 operates to stop the filling of the fuel.
- the cylindrical containers of the fuel tank 1 do not have to be all of the same size, do not have to be arranged in parallel on the same plane, but may have a form shown, for example, in FIG. 4(A) or 4 (B) depending on the limitations of a place on where fuel tank 1 is installed.
- FIG. 4(A) shows an embodiment in which the cylindrical containers of fuel tank 1 have dissimilar sizes
- FIG. 4(B) shows an embodiment in which the cylindrical containers of fuel tank 1 are not arranged on the same plane.
- communication passages are formed in the inner partitioning walls, and upper ends 9 of the communication passages are so formed that gaseous space 7 stays therein.
- fuel tank 1 When mounted on a vehicle, therefore, fuel tank 1 can have a complex shape as shown in FIG. 5 .
- FIG. 5 shows an embodiment of when fuel tank 1 is so formed as can be mounted on a vehicle astride of the driveshaft.
- the filling ratio has been specified for storing the liquefied fuel in the storage tank.
- the filling ratio of the LPG has been specified as not more than 85 percent. Therefore, the volume of gaseous space 7 may be set at not less than 15 percent.
Abstract
Description
- This invention relates to a fuel tank.
- In an internal combustion engine that uses liquefied fuel, the liquefied fuel is stored in a tank. However, when the temperature is elevated, the liquefied fuel is gasified to elevate the pressure in the tank which may cause the tank to burst. Therefore, for example, the ratio of gas space to the whole internal volume of the tank with liquefied petroleum gas (LPG) must not be more than 85 percent, according to the Japanese standard for handling LPG automobiles.
- That is, a space of a predetermined ratio must remain in the fuel tank that stores the liquefied fuel after the tank has been filled with liquefied fuel.
- In order to prevent the fuel from overfilling, taking into account complex tank structures, float-type conventional fuel tanks are used for preventing overfilling.
- Patent literature (PTL) 1, for instance, discloses a technique that utilizes a liquid surface sensor. Further, technologies that provide an air chamber in the fuel tank have been disclosed in
PTLs - However, according to the technology of
PTL 1, the fuel that is filled in the fuel tank up to a predetermined amount is detected by a liquid level sensor, and a fuel feed pump is stopped by a special device. Further, the technologies ofPTLs - [PTL 1] JP 9-209979A
- [PTL 2] JP 7-132738A
- [PTL 3] JP 10-184464A
- It is an object of the present invention to provide a fuel tank of a simple structure without any special device but having space of a predetermined ratio after the fuel tank has been filled with liquefied fuel.
- According to the invention described in
claim 1, there is provided a fuel tank, wherein the fuel tank is of a form in which a number of cylindrical containers are arranged in parallel and are coupled together in a manner that the cylindrical containers neighboring each other share common partitioning walls, respectively; each of the partitioning walls has a passage through which the neighboring cylindrical containers are communicated with each other; the upper ends of the passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the cylindrical containers; and when the liquid is fed into the fuel tank, space of a predetermined volume is formed on the surface of the liquid. - That is, in the invention of
claim 1, if liquefied fuel is injected into the fuel tank, the injected liquefied fuel flows through the communication passages of the inner partitioning walls and is injected into the cylindrical containers. The upper ends of the communication passages of the inner partitioning walls are formed leaving partly the inner partitioning walls so that the liquefied gas fuel will not enter into the upper parts of the cylindrical containers. The position of the surface of the liquefied fuel injected into the cylindrical containers becomes the position of the upper end portions, and gas formed by the gasification of the liquefied fuel remains over the surface of the liquid. That is, a gaseous space forms on the surface of the liquid in each cylindrical container. The ratio of the gaseous space to the whole internal volume of the tank has been specified for filling the storage tank with the liquefied fuel. Upon determining, in advance, the upper end positions of the communication passages of the inner partitioning walls so as to meet the specified filling ratio, it is possible to fill the liquefied fuel at a predetermined ratio relying on a simple structure without using any special device. - According to an invention described in
claim 2, there is provided a fuel tank, wherein the fuel tank is of a form in which a number of spherical containers are arranged in parallel and are coupled together in a manner that the spherical containers neighboring each other share common partitioning walls, respectively; each of the partitioning walls has a passage through which the neighboring spherical containers are communicated with each other; the upper ends of the passages are formed leaving partly the inner partitioning walls so that the liquid will not enter into the upper parts of the spherical containers; and when the liquid is fed into the fuel tank, space of a predetermined volume is formed on the surface of the liquid. - That is, in the invention of
claim 2, the fuel tank is of a form in which a number of spherical containers are arranged in parallel and are coupled together to provide the fuel tank that exhibits the same effects as those of the fuel tank described inclaim 1. - According to an invention described in
claim 3, there is provided the fuel tank ofclaim - That is, the invention of
claim 3 provides the fuel tank which when, for example, the LPG is to be stored, meets the filling ratio of not more than 85 percent specified under the Japanese standard for handling LPG automobiles. - The inventions described in claims provide a fuel tank of a simple structure without any special device but having a space of a predetermined ratio after the fuel tank has been filled with the liquefied fuel.
- [
FIG. 1 ] is a sectional view schematically illustrating the constitution of an embodiment of when the invention is applied to a fuel tank. - [
FIG. 2 ] is a sectional view illustrating the fuel tank ofFIG. 1 in another cross section. - [
FIG. 3 ] is a perspective view showing the appearance of the fuel tank ofFIG. 1 , wherein I-I is the sectional position ofFIG. 1 and II-II is the sectional position ofFIG. 2 . - [
FIG. 4 ] (A) and 4(B) are sectional views schematically illustrating the constitutions of other embodiments of when the invention is applied to the fuel tank. - [
FIG. 5 ] is a view schematically illustrating the constitution of a further embodiment of when the invention is applied to the fuel tank, wherein (A) is a plan view of an outer shape and (B) is an elevation in cross section at a position of in (A). - Embodiments of the invention will now be described with reference to the accompanying drawings. In the plurality of accompanying drawings, the same or corresponding members are denoted by the same reference numerals.
-
FIG. 3 shows the appearance offuel tank 1 of the invention for storing a liquefied fuel such as LPG, ammonia, etc.Fuel tank 1 is of a form in which a number of cylindrical containers are arranged in parallel and are coupled together.FIG. 2 is a sectional view of a portion indicated by an arrow II-II inFIG. 3 , and shows a portion where there is no communication passage in inner partitioningwalls 8. The cylindrical containers, as is well known, have excellent resistance against the pressure, and the thickness of the cylindrical containers can be easily designed so as to satisfy the standards of pressure resistance. Namely,fuel tank 1 can be easily designed to satisfy the standards of pressure resistance required for the liquefied fuel. -
FIG. 1 is a sectional view of a portion indicated by an arrow I-I inFIG. 3 , and shows a portion having communication passages ininner partitioning walls 8. If the liquefied fuel is injected intofuel tank 1 throughfuel inlet port 2, injectedliquefied fuel 5 flows through the communication passages of the inner partitioning walls and is injected into the cylindrical containers.Upper ends 9 of the communication passages of the inner partitioning walls are formed leaving partly the inner partitioning walls so thatliquefied gas fuel 5 will not enter into the upper parts of the cylindrical containers. The position ofsurface 6 ofliquefied fuel 5 injected into the cylindrical containers becomes the position ofupper end portions 9. Namely, gaseous space formed chiefly by the gasification of the liquefied fuel stays oversurface 6 of the liquid in the cylindrical containers; i.e.,gaseous space 7 is formed therein. InFIG. 1 , the rightmost cylindrical container only hasvent 4, and the liquefied fuel is filled therein. If the liquefied fuel passes throughvent 4, a cut-off gas valve (not shown) provided invent 4 operates to stop the filling of the fuel. - In the above description, the cylindrical containers of the
fuel tank 1 do not have to be all of the same size, do not have to be arranged in parallel on the same plane, but may have a form shown, for example, inFIG. 4(A) or 4(B) depending on the limitations of a place on wherefuel tank 1 is installed.FIG. 4(A) shows an embodiment in which the cylindrical containers offuel tank 1 have dissimilar sizes andFIG. 4(B) shows an embodiment in which the cylindrical containers offuel tank 1 are not arranged on the same plane. Also in these embodiments, communication passages are formed in the inner partitioning walls, andupper ends 9 of the communication passages are so formed thatgaseous space 7 stays therein. - When mounted on a vehicle, therefore,
fuel tank 1 can have a complex shape as shown inFIG. 5 .FIG. 5 shows an embodiment of whenfuel tank 1 is so formed as can be mounted on a vehicle astride of the driveshaft. - The filling ratio has been specified for storing the liquefied fuel in the storage tank. Upon determining, in advance, the upper end positions of the communication passages of the inner partitioning walls in a manner that the volume of
gaseous space 7 satisfies the specified filling ratio, therefore, it is allowed to fill the liquefied gas fuel at a predetermined ratio in the fuel tank of a simple structure without using any special device. According to the Japanese standard for handling LPG automobiles, for example, the filling ratio of the LPG has been specified as not more than 85 percent. Therefore, the volume ofgaseous space 7 may be set at not less than 15 percent. - In the
foregoing fuel tank 1 of a form in which a number of cylindrical containers were arranged in parallel and were coupled together was described. However, it will be easily understood fromFIGS. 1 to 5 that the same effects are exhibited even when the number of containers that are arranged in parallel have a spherical shape. - 1 fuel tank
- 2 fuel inlet port
- 3 fuel outlet port
- 4 vent
- 5 liquefied fuel
- 6 surface of liquid
- 7 gaseous space
- 8 partitioning wall
- 9 upper end of passage
Claims (4)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009235327A JP2011079493A (en) | 2009-10-09 | 2009-10-09 | Fuel tank |
JP2009-235327 | 2009-10-09 | ||
PCT/JP2010/067818 WO2011043487A1 (en) | 2009-10-09 | 2010-10-05 | Fuel Tank |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120217249A1 true US20120217249A1 (en) | 2012-08-30 |
Family
ID=43382372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/499,980 Abandoned US20120217249A1 (en) | 2009-10-09 | 2010-10-05 | Fuel tank |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120217249A1 (en) |
JP (1) | JP2011079493A (en) |
CN (1) | CN102574462A (en) |
WO (1) | WO2011043487A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107685627A (en) * | 2016-08-05 | 2018-02-13 | 罗伯特·博世有限公司 | Fuel reservoir |
US20190061947A1 (en) * | 2017-08-29 | 2019-02-28 | Goodrich Corporation | Conformable tank with sandwich structure walls |
EP3456632A1 (en) * | 2017-09-15 | 2019-03-20 | Goodrich Corporation | Design and manufacture of a conformable pressure vessel |
US10816138B2 (en) | 2017-09-15 | 2020-10-27 | Goodrich Corporation | Manufacture of a conformable pressure vessel |
US11091266B2 (en) | 2017-08-29 | 2021-08-17 | Goodrich Corporation | Conformable tank fabricated using additive manufacturing |
US11939105B2 (en) | 2017-08-29 | 2024-03-26 | Goodrich Corporation | 3D woven conformable tank |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5878404B2 (en) * | 2012-03-22 | 2016-03-08 | トヨタ自動車株式会社 | Fuel tank and manufacturing method thereof |
US9476546B2 (en) * | 2015-03-27 | 2016-10-25 | Goodrich Corporation | Curved and conformal high-pressure vessel |
KR20220153257A (en) * | 2021-05-11 | 2022-11-18 | 현대모비스 주식회사 | Apparatus and method for controlling fuel tank |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107685627A (en) * | 2016-08-05 | 2018-02-13 | 罗伯特·博世有限公司 | Fuel reservoir |
US20190061947A1 (en) * | 2017-08-29 | 2019-02-28 | Goodrich Corporation | Conformable tank with sandwich structure walls |
US10703481B2 (en) * | 2017-08-29 | 2020-07-07 | Goodrich Corporation | Conformable tank with sandwich structure walls |
US11091266B2 (en) | 2017-08-29 | 2021-08-17 | Goodrich Corporation | Conformable tank fabricated using additive manufacturing |
US11939105B2 (en) | 2017-08-29 | 2024-03-26 | Goodrich Corporation | 3D woven conformable tank |
EP3456632A1 (en) * | 2017-09-15 | 2019-03-20 | Goodrich Corporation | Design and manufacture of a conformable pressure vessel |
US10816138B2 (en) | 2017-09-15 | 2020-10-27 | Goodrich Corporation | Manufacture of a conformable pressure vessel |
US11725779B2 (en) | 2017-09-15 | 2023-08-15 | Goodrich Corporation | Manufacture of a conformable pressure vessel |
Also Published As
Publication number | Publication date |
---|---|
WO2011043487A1 (en) | 2011-04-14 |
JP2011079493A (en) | 2011-04-21 |
CN102574462A (en) | 2012-07-11 |
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