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특허 상세정보

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Reduction of nitrogen oxides emissions from diesel engines

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02B-047/00   
미국특허분류(USC) 123/25E ; 123/1A ; 44/302
출원번호 US-0114206 (1993-08-30)
발명자 / 주소
인용정보 피인용 횟수 : 36  인용 특허 : 0
초록

The present invention relates to a process for reducing nitrogen oxides emissions from a diesel engine, which comprises preparing an emulsion of an aqueous urea solution in diesel fuel, and supplying said emulsion to a diesel engine for combusting therein, whereby combustion of the emulsion leads to a reduction in the nitrogen oxides emissions from the diesel engine when compared with combustion of diesel fuel alone.

대표
청구항
▼

A process for reducing nitrogen oxides emissions from a diesel engine comprising forming an emulsion of an aqueous urea solution in diesel fuel which comprises about 15% to about 45% urea solution by weight, wherein said emulsion further comprises a catalyst which comprises a composition or complex of cerium, platinum or a platinum group metal, copper, iron, or manganese and further wherein at least about 70% of the water droplets in the emulsion have a particle size below about 5 microns Sauter mean diameter, and supplying said emulsion to a diesel engi...

이 특허를 인용한 특허 피인용횟수: 36

  1. Filippini, Brian B.; Forsberg, John W.; Steckel, Thomas F.; Moreton, David J.; McAtee, Rodney J.. Amino alkylphenol emulsifiers for an aqueous hydrocarbon fuel. USP2005076913630.
  2. Hatfield, Randal L.; Golden, Stephen J.; Ngo, Johnny T.. Base metal activated rhodium coatings for catalysts in three-way catalyst (TWC) applications. USP2017029579604.
  3. Launois, Maxime; Nazarpoor, Zahra; Golden, Stephen J.. Calibration strategies to improve spinel mixed metal oxides catalytic converters. USP2018049951706.
  4. Langer, Deborah A.; Mullay, John J.; Fakult, Jennifer N.; Daves, Harshida C.; Skoch, William E.; Westfall, David L.. Concentrated emulsion for making an aqueous hydrocarbon fuel. USP2003116652607.
  5. Langer, Deborah A.; Westfall, David L.; Skoch, William E.; Mullay, John J.. Continuous process for making an aqueous hydrocarbon fuel. USP2003036530964.
  6. Westfall, David L.; Mullay, John J.; Rowan, Stephen P.. Continuous process for making an aqueous hydrocarbon fuel emulsions. USP2004126827749.
  7. Liang Cho Y. ; McCoy Steven R.. Diagnostic system for an emissions control on an engine. USP2001076266955.
  8. Sprague, Barry; Beal, Steve. Diesel exhaust treatment systems and methods. USP2017099771534.
  9. Dingle, Philip J. G.. Direct in-cylinder reductant injection system and a method of implementing same. USP2004016679200.
  10. Langer,Deborah A.; Bardasz,Ewa A.; Abraham,William D.. Emulsified fuels and engine oil synergy. USP2008087413583.
  11. Claire L. Thompson GB; Douglas M. Barr GB. Emulsifier for an acqueous hydrocarbon fuel. USP2002076419714.
  12. Nazarpoor, Zahra; Golden, Stephen J.. Enhanced catalytic activity at the stoichiometric condition of zero-PGM catalysts for TWC applications. USP2018019861964.
  13. Nazarpoor, Zahra. Firing (calcination) process and method related to metallic substrates coated with ZPGM catalyst. USP2016129511353.
  14. Krogh, James A.; Swenson, Robert A.; Hazel, Clifford J.; Williamson, Ian V.. Fuel additive, additive-containing fuel compositions and method of manufacture. USP2012048147566.
  15. Gray, Jr., Charles L.; Haugen, David James. Low emission diesel combustion system with low charge-air oxygen concentration levels and high fuel injection pressures. USP2005026857263.
  16. Gray, Jr.,Charles L.. Low emission fuel for use with controlled temperature combustion, direct injection, compression ignition engines. USP2006057047933.
  17. Peter-Hoblyn Jeremy D.,GBX. Method for reducing emissions of NO.sub.x and particulates from a diesel engine. USP2000046051040.
  18. Schwab,Scott D.; Cunningham,Lawrence Joseph; Morris,John D.; Evans,Joel A.. Method of improving the operation of combustion particulate filters. USP2006097111591.
  19. Steinmann Henry W. Microemulsion fuel compositions for the internal combustion engine and for oil furnaces. USP2000016017368.
  20. Lay,Mark K.; Schembri,Chris; Baxter, Jr.,C. Edward. On-board fuel additive injection systems. USP2008097428890.
  21. Nazarpoor, Zahra; Kitazumi, Sen; Ngo, Johnny T.. Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate. USP2017019545626.
  22. Deborah A. Langer ; David L. Westfall ; Morris E. Smith ; Robert T. Graf ; Harshida Dave ; John J. Mullay ; Daniel T. Daly ; Elizabeth A. Schiferl. Process and apparatus for making aqueous hydrocarbon fuel compositions, and aqueous hydrocarbon fuel composition. USP2002046368366.
  23. Deborah A. Langer ; David L. Westfall ; Morris E. Smith ; Robert T. Graf ; Harshida Dave ; John J. Mullay ; Daniel T. Daly ; Elizabeth A. Schiferl ; Brian B. Filippini ; William D. Abraham. Process and apparatus for making aqueous hydrocarbon fuel compositions, and aqueous hydrocarbon fuel composition. USP2002046368367.
  24. Deborah A. Langer ; David L. Westfall ; Morris E. Smith ; Robert T. Graf ; Harshida Dave ; John J. Mullay ; Daniel T. Daly ; Elizabeth A. Schiferl ; Brian B. Filippini ; William D. Abraham . Process and apparatus for making aqueous hydrocarbon fuel compositions, and aqueous hydrocarbon fuel compositions. USP2002056383237.
  25. Brown, Kevin F.; Langer, Deborah A.; Duncan, David A.. Process for reducing pollutants from the exhaust of a diesel engine. USP2005096949235.
  26. Brown, Kevin Francis; Langer, Deborah Ann; Duncan, David. Process for reducing pollutants from the exhaust of a diesel engine. USP2003086606856.
  27. Brown,Kevin Francis; Langer,Deborah Ann; Duncan,David. Process for reducing pollutants from the exhaust of a diesel engine. USP2006047028468.
  28. Brown, Kevin F.; Tadrous, Ted N.; Langer, Deborah A.; Duncan, David A.. Process for reducing pollutants from the exhaust of a diesel engine using a water diesel fuel in combination with exhaust after-treatments. USP2004046725653.
  29. Hatfield, Randal L.; Golden, Stephen J.; Ngo, Johnny T.. Rhodium-iron catalysts. USP2016109475004.
  30. Nazarpoor, Zahra; Golden, Stephen J.. Spinel compositions and applications thereof. USP2016129511358.
  31. Nazarpoor, Zahra; Golden, Stephen J.. Synergized PGM catalyst systems including platinum for TWC application. USP2017019555400.
  32. Golden, Stephen J.. Synergized PGM close-coupled catalysts for TWC applications. USP2017079700841.
  33. 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. USP1998095809774.
  34. Nazarpoor, Zahra; Abken, Anke Elizabeth; Golden, Stephen J.. Thermal stability of copper-manganese spinel as Zero PGM catalyst for TWC application. USP2017089731279.
  35. Hatfield, Randal L.; Lee, Edward J.; Ngo, Johnny T.; Golden, Stephen J.. Three-way catalyst systems including Fe-activated Rh and Ba-Pd material compositions. USP2016109475005.
  36. Nazarpoor, Zahra; Golden, Stephen J.. ZPGM Diesel Oxidation Catalysts and methods of making and using same. USP2016129511350.

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