[특허]Ammonia vapor management system and method

Ammonia vapor management system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/00 F01N-003/10
출원번호	US-0154960 (2011-06-07)
등록번호	US-8621848 (2014-01-07)
발명자 / 주소	Shaikh, Furqan Lawrence, Don Cooper, Scott Castleberry, Jr., Larry
출원인 / 주소	Ford Global Technologies, LLC
대리인 / 주소	Voutyras, Julia
인용정보	피인용 횟수 : 0 인용 특허 : 21

초록 ▼

A method is described for managing vapors generated from an ammonia-containing reductant delivery system. The method may include generating ammonia vapors in a first storage device and storing said generated ammonia vapors in a second storage device. Further, the method may include purging the stored vapors from the second storage device to upstream of a combustion chamber of the engine during a first condition and downstream of the combustion chamber during a second condition.

대표청구항 ▼

1. A method of managing vapors generated from an ammonia-containing reductant delivery system for an engine, comprising: storing an ammonia-containing fluid in a first storage device;generating ammonia vapors in the first storage device and storing said generated ammonia vapors in a second storage device; andpurging said stored vapors from the second storage device to upstream of a combustion chamber of the engine during a first condition and downstream of the combustion chamber during a second condition, while venting at least one of said first and second storage devices to atmosphere via a vent that relieves vacuum to flow fresh air into the reductant delivery system. 2. The method of claim 1 wherein the first condition is an atmospheric temperature condition. 3. The method of claim 1 wherein the first condition is a first temperature condition and the second condition is a second temperature condition. 4. The method of claim 3 wherein the first temperature condition is greater than the second temperature condition. 5. The method of claim 3 further comprising purging said stored vapors from the second storage device to the first storage device during a third temperature condition wherein the third temperature condition is less than the first temperature condition and the second temperature condition. 6. The method of claim 1 further comprising storing said generated ammonia vapors in the second storage device during at least a portion of refilling the first storage device with an ammonia containing fluid. 7. The method of claim 1 further comprising purging said generated ammonia vapors from the first storage device to at least one of upstream of the combustion chamber of the engine or downstream of the combustion chamber. 8. The method of claim 1 wherein said stored vapors are purged downstream of the combustion chamber into an exhaust of the engine, the purged vapors reacting in a catalyst, where said catalyst is an SCR catalyst. 9. The method of claim 1 wherein purging to upstream of the combustion chamber of the engine includes purging to the first storage device. 10. A method of purging ammonia-containing vapors for an engine, comprising: storing an ammonia-containing fluid in a first storage device;generating ammonia vapors in the first storage device and storing said generated ammonia vapors in a second storage device;delivering said ammonia vapors upstream of an engine combustion chamber, including to the first storage device, during a first condition and into an engine exhaust upstream of an SCR catalyst during a second condition. 11. The method of claim 10 wherein the first condition is a first temperature condition. 12. The method of claim 11 wherein the second condition is a second temperature condition. 13. The method of claim 12 wherein the first temperature condition is greater than the second temperature condition. 14. A method of refilling an ammonia-containing reductant delivery system for an engine, comprising: storing an ammonia-containing fluid in a first storage device;during refilling of the first storage device with the ammonia-containing fluid, storing ammonia vapors generated from said refilling in a second storage device; andafter said storing, selectively purging said stored ammonia vapors to each of the first storage device and engine exhaust based on temperature, wherein the selective purging is based on whether temperature in an SCR catalyst in the engine exhaust is suitable for high NOx conversion therein. 15. The method of claim 14 where said stored ammonia vapors are purged during engine-off conditions. 16. The method of claim 14 where said stored ammonia vapors are purged during engine-on conditions.

이 특허에 인용된 특허 (21)

Oberski, Christopher; Cavataio, Giovanni; van Nieuwstadt, Michiel J.; Webb, Timothy; Ruona, William, Ammonia vapor storage and purge system and method.
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Stutzenberger Heinz (Vaihingen DEX), Arrangement for the aftertreatment of exhaust gases.
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Lane William H. (Chillicothe IL) Peterson Randy N. (Peoria IL) Smith Aaron L. (East Peoria IL) White Scott T. (East Peoria IL) Learned Daniel J. (Peoria IL), Combustion exhaust purification system and method.
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Michiel Jacques van Nieuwstadt ; Ching-Hsong George Wu, Control of a NOX reductant delivery system.
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Shiraishi Yoshihiro (Hiroshima JPX) Ukawa Naohiko (Hiroshima JPX), Controlling the injection of ammonia in a dry type exhaust gas denitration process.
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Tost, Rainer, Device and method for denoxing exhaust gas from an internal combustion engine.
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Oberski, Christopher; Cavataio, Giovanni; van Nieuwstadt, Michiel J.; Webb, Timothy; Ruona, William, Engine-off ammonia vapor management system and method.
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Johnson Philip Jeffrey ; Dumas James T. ; Khami Roger, Evaporative emission canister for an automotive vehicle.
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Hamazaki Yukio (Wako JPX), Evaporative emission control system for internal combustion engines.
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Daudel Helmut (Schorndorf DEX) Marquardt Klaus-Jrgen (Remshalden DEX) Grtner Uwe (Weinstadt DEX), Exhaust gas aftertreatment device for internal combustion engines.
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Weisweiler Werner,DEX ; Huthwohl Georg,DEX ; Maurer Bernd,DEX, Exhaust gas purification system for denoxing exhaust gases from combustion units.
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Mulligan, D. Neal, Internal combustion engine with SCR and integrated ammonia production.
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Heuer Karsten (Wasbuttel DEX), Internal combustion engine with a secondary air-fuel supply.
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Hu,Haoran; Radhamohan,Subbaraya; Bevan,Karen Evelyn; McCarthy, Jr.,James Edward; Yan,Jiyang; Reuter,Johannes W.; Singh,Vishal, Mechanism and method of combined fuel reformer and dosing system for exhaust aftertreatment and anti-idle SOFC APU.
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Armin Marko DE; Thomas Wahl DE; Ulrich Alkemade DE; Frank Brenner DE; Marc Bareis DE; Horst Harndorf DE, Method and device for selective catalytic NOx reduction.
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Hofmann Lothar,DEX ; Pfaff Oliver,DEX ; Klumpp Udo,DEX ; Mathes Wieland,DEX, Premixing chamber for an exhaust gas purification system.
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Muller, Raimund; Hofmann, Lothar; Schardt, Kurt; Mathes, Wieland, Process for the catalytic cleaning of the exhaust gas from a combustion plant.
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Jeremy D. Peter-Hoblyn GB; Eric N. Balles ; John E. Hofmann, Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction.
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Michlin Norman (Southfield MI) Thies Edward J. (Warren MI), Self-contained disposable developer/absorber package.
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Peter-Hoblyn Jeremy D.,GB3 ; Valentine James M. ; Tarabulski Theodore J., System for fueling and feeding chemicals to internal combustion engines for NO.sub.x reduction.
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Boaz Harari IL; Mordechay Beyar IL; Oren Globerman IL, Tack device.
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