IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0101340
(2002-03-19)
|
발명자
/ 주소 |
- Gershtein, Vladimir Yliy
- Ford, Robert William
- Butler, Christopher R.
- Ngai, Eugene Y.
|
출원인 / 주소 |
- Air Products and Chemicals, Inc.
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
7 |
초록
▼
A system for the transportation and storage of a product comprising a tank including a cylindrical wall section and two ends which define a cylindrical tank periphery, wherein the tank periphery has an interior and an exterior; a recessed valve box including one or more side walls, a bottom wall, an
A system for the transportation and storage of a product comprising a tank including a cylindrical wall section and two ends which define a cylindrical tank periphery, wherein the tank periphery has an interior and an exterior; a recessed valve box including one or more side walls, a bottom wall, and a removable, sealable top cover which can be attached to the one or more side walls to seal the valve box, wherein the valve box side walls are sealably joined to the cylindrical wall section such that the valve box extends through the cylindrical wall section into the interior of the tank periphery and is partially or totally disposed in the interior of the tank periphery; and one or more valves disposed in the valve box. Each valve has a first and a second end, wherein each first end may be connected to a pipe which passes through a wall of the valve box for introducing product into the tank or withdrawing product from the tank, wherein the valves are disposed partially or totally within the tank periphery, and wherein the tank has a rigid framework surrounding the tank and valve box, wherein the framework is attached to and supports the tank, and wherein the framework defines a periphery which encloses the periphery of the tank. The product in the tank can be isolated from the atmosphere surrounding the tank when the valves are closed.
대표청구항
▼
A system for the transportation and storage of a product comprising a tank including a cylindrical wall section and two ends which define a cylindrical tank periphery, wherein the tank periphery has an interior and an exterior; a recessed valve box including one or more side walls, a bottom wall, an
A system for the transportation and storage of a product comprising a tank including a cylindrical wall section and two ends which define a cylindrical tank periphery, wherein the tank periphery has an interior and an exterior; a recessed valve box including one or more side walls, a bottom wall, and a removable, sealable top cover which can be attached to the one or more side walls to seal the valve box, wherein the valve box side walls are sealably joined to the cylindrical wall section such that the valve box extends through the cylindrical wall section into the interior of the tank periphery and is partially or totally disposed in the interior of the tank periphery; and one or more valves disposed in the valve box. Each valve has a first and a second end, wherein each first end may be connected to a pipe which passes through a wall of the valve box for introducing product into the tank or withdrawing product from the tank, wherein the valves are disposed partially or totally within the tank periphery, and wherein the tank has a rigid framework surrounding the tank and valve box, wherein the framework is attached to and supports the tank, and wherein the framework defines a periphery which encloses the periphery of the tank. The product in the tank can be isolated from the atmosphere surrounding the tank when the valves are closed. Storz; US-3895628, 19750700, Adair, 602/079; US-3920008, 19751100, Lehman; US-4351325, 19820900, Walker; US-4355600, 19821000, Zielinski, 119/850; US-4385592, 19830500, Goldstein, 602/018; US-4671264, 19870600, Frangi; US-4787379, 19881100, Yeh; US-5105806, 19920400, Woodhouse et al., 128/096.1; US-5137508, 19920800, Engman; US-D330273, 19921000, Cernek; US-5259397, 19931100, McCabe, 128/897; US-5323790, 19940600, Guhle et al.; US-5439480, 19950800, Benckhuijsen; US-5531187, 19960700, Ward, 119/856; US-5624391, 19970400, Fan et al., 602/063; US-5662640, 19970900, Daniels, 604/392; US-5823984, 19981000, Silverberg; US-5910126, 19990600, Wilson et al.; US-5941199, 19990800, Tamura, 119/850; US-5996537, 19991200, Caditz, 119/850; US-6112704, 20000900, Altafi; US-6240882, 20010600, Gross l further includes an equation which computes a temperature drop of the fuel adsorbent based on the fuel amount desorbed from the canister, and computes the temperature of the fuel adsorbent based on this temperature drop. 4. The fuel vapor emission control device as defined in claim 1, wherein the controller further functions to: estimate the fuel amount desorbed from the canister by considering that the air-fuel ratio fluctuation of the engine is due to purge, compute the fuel amount adsorbed by the canister by performing an inverse computation from the estimated desorption amount, and correct the value of the adsorption amount which is an internal parameter of the canister model, by the value of the adsorption amount obtained by the inverse computation. 5. The fuel vapor emission control device as defined in claim 4, wherein the controller further functions to: compute the fuel amount adsorbed by the canister from the estimated desorbed fuel amount, by inverse computation of the equation which computes the desorption amount. 6. The fuel vapor emission control device as defined in claim 4, wherein the controller further functions to: estimate the desorbed fuel amount from the canister from the air-fuel ratio fluctuation of the engine when the air-fuel ratio of the engine does not fluctuate due to disturbances other than purge. 7. The fuel vapor emission control device as defined in claim 4, wherein the controller further functions to: estimate the desorbed fuel amount from the canister from the air-fuel ratio fluctuation of the engine when the air-fuel ratio of the purge gas is richer than a predetermined value. 8. The fuel vapor emission control device as defined in claim 4, wherein the controller further functions to: estimate the desorbed fuel amount from the canister from the air-fuel ratio fluctuation of the engine when the purge rate is higher than a predetermined value. 9. The fuel vapor emission control device as defined in claim 1, wherein the controller further functions to: set a maximum purge rate under the present running condition, set a purge rate variation amount limit based on the air-fuel ratio of the purge gas, and the air-fuel ratio fluctuation of the engine due to the variation of the purge rate, and compute a target purge rate which follows the maximum purge rate by a variation amount less than the purge rate variation amount limit. 10. The fuel vapor emission control device as defined in claim 9, wherein the controller further functions to: set the maximum purge rate less than a purge rate upper limit specified by the size of the purge valve. 11. The fuel vapor emission control device as defined in claim 9, wherein the controller further functions to: set the maximum purge rate less than the purge rate upper limit specified from the characteristics of the fuel injector. 12. The fuel vapor emission control device as defined in claim 9, wherein the controller further functions to: estimate all the running regions which can be reached from the present running region, predict the minimum purge rate in these estimated running regions, and set the maximum purge rate less than the purge rate upper limit computed from the minimum purge rate and the purge rate variation amount limit. 13. The fuel vapor emission control device as defined in claim 9, wherein the controller further functions to: set the maximum purge rate less than the purge rate upper limit specified such that the air-fuel ratio feedback correction coefficient is greater than a predetermined value. 14. The fuel vapor emission control device as defined in claim 9, wherein the controller further functions to: set the purge rate variation amount limit so that the air fuel ratio fluctuation due to the variation of the purge rate can be absorbed by air-fuel ratio feedback control. 15. The fuel vapor emission control device as defined in claim 9, wherein the controller further functions to:
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