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Thermal management of hybrid LNT/SCR aftertreatment during desulfation

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • F01N-003/00
출원번호 US-0176710 (2005-07-07)
등록번호 US-7251929 (2007-08-07)
발명자 / 주소
  • Hu,Haoran
  • McCarthy, Jr.,James Edward
  • Yan,Jiyang
출원인 / 주소
  • Eaton Corporation
인용정보 피인용 횟수 : 12  인용 특허 : 21

초록

In an exhaust aftertreatment system comprising a NOx adsorber-catalyst followed by an SCR catalyst, means are provided for preventing the SCR catalyst from becoming heated to near the same peak temperatures as the NOx adsorber-catalyst during desulfation. In one embodiment, the means is a thermal ma

대표청구항

The invention claimed is: 1. An exhaust aftertreatment system, comprising: a NOx adsorber-catalyst configured to treat an exhaust flow; an SCR catalyst configured to adsorb ammonia released by the NOx adsorber-catalyst during denitration and to subsequently use the ammonia to reduce NOx in the exha

이 특허에 인용된 특허 (21)

  1. Swars Helmut (Bergisch Gladbach DEX), Catalytic converter housing, particularly for starting catalytic converters, and associated catalyst carrier body.
  2. Mark Borland, Control system for lean air-fuel ratio NOx catalyst system.
  3. Noguchi Masaaki (Aichi JA) Bunda Tsuchio (Aichi JA) Sumiyoshi Masaharu (Aichi JA), Device for purifying exhaust gases by catalytic reaction.
  4. Bromberg, Leslie; Cohn, Daniel R.; Rabinovich, Alexander, Emission abatement system utilizing particulate traps.
  5. Liang, Cho Y.; McCoy, Steven R., Emissions control system for increasing selective catalytic reduction efficiency.
  6. May, David F.; Schenk, Charles R.; Krempel, Louis A.; Fisher, H. Lee; May, Angela R., Exhaust aftertreatment system and method for an internal combustion engine.
  7. Katoh Kenji (Shizuoka JPX) Takeshima Shinichi (Susono JPX) Tanaka Toshiaki (Numazu JPX) Iguchi Satoshi (Mishima JPX) Goto Masato (Susono JPX) Kihara Tetsuro (Susono JPX) Asanuma Takamitsu (Susono JPX, Exhaust gas purification apparatus for an internal combustion engine.
  8. Hanaoka Hiroshi,JPX ; Kuroda Osamu,JPX ; Doi Ryouta,JPX ; Iizuka Hidehiro,JPX ; Ogawa Toshio,JPX ; Yamashita Hisao,JPX ; Azuhata Shigeru,JPX ; Kitahara Yuichi,JPX ; Hiratsuka Toshifumi,JPX ; Okude Ko, Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine.
  9. Kinugasa Yukio,JPX ; Itou Takaaki,JPX ; Suzuki Naoto,JPX ; Takeuchi Koichi,JPX ; Tanaka Hiroshi,JPX ; Fuwa Naohide,JPX, Exhaust gas purification device for an internal combustion engine.
  10. Kinugasa Yukio,JPX ; Itou Takaaki,JPX ; Takeuchi Koichi,JPX, Exhaust gas purification device for an internal combustion engine.
  11. Binder, Klaus; Günther, Josef; Hertzberg, Andreas; Konrad, Brigitte; Krutzsch, Bernd; Ölschlegel, Heinz-Jost; Renfftlen, Stefan; Voigtländer, Dirk; Weibel, Michel; Weirich, Marko; Wenn, Exhaust-gas aftertreatment device with nitrogen oxide storage catalytic converter, and operating method therefor.
  12. Jarvis Mottlene ; Adams Karen Marie, Method for converting exhaust gases from a diesel engine using nitrogen oxide absorbent.
  13. Pott, Ekkehard, Method for desulfating an NOx accumulator catalytic converter.
  14. He, Lin; Ogunwumi, Steven B., NH3 generation catalysts for lean-burn and diesel applications.
  15. Stanglmaier, Rudolf H.; Roecker, Ryan C.; Roberts, Jr., Charles E.; Stewart, Daniel W., NOx aftertreatment system and method for internal combustion engines.
  16. Jobson, Edward; Larsson, Mikael; Heed, Bj?rn; Witte, Stefan, NOx-reducing catalyst with temperature regulation of exhaust gas.
  17. Konrad Brigitte,DEX ; Krutzsch Bernd,DEX ; Voigtlaender Dirk,DEX, Process and apparatus for reducing nitrogen-oxide emissions in exhaust gas.
  18. Twigg, Martyn Vincent, Process and apparatus for treating combustion exhaust gas.
  19. Dalla Betta,Ralph; Cizeron,Joel, System and methods for improved emission control of internal combustion engines using pulsed fuel flow.
  20. Kaboord,Wayne Scott; Becher,Dawn Marie; Begale,Fred Joseph; Fellers,Daniel Woodrow; Kovacich,John Albert; Kuznicki,Steven M., Temperature swing adsorption and selective catalytic reduction NOx removal system.
  21. Tumati, Prasad; Nohl, John P.; Crawley, Wilbur H., Thermal management of exhaust systems.

이 특허를 인용한 특허 (12)

  1. Li, Yuejin, CSF with low platinum/palladium ratios.
  2. Phillips, Paul Richard; Chandler, Guy Richard; Green, Alexander Nicholas Michael; Harris, Matthew Eben; Wylie, James Alexander; Gall, Miroslaw; Burgess, Garry Adam, Combining SCR with PNA for low temperature emission control.
  3. Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
  4. Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
  5. Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
  6. Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Susanne; Zabel, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
  7. Wan, Chung-Zong; Zheng, Xiaolai; Stiebels, Suzanne; Wendt, Claudia; Neubauer, Torsten; Boorse, R. Samuel, Emissions treatment system with ammonia-generating and SCR catalysts.
  8. McCarthy, Jr., James Edward, Exhaust cooling module for SCR catalysts.
  9. Bentley, Gregory, Exhaust gas aftertreatment bypass system and methods.
  10. Kim, Yong-Woo; Kim, Do-Woan; Min, Joon-Seok; Lee, Seong-Ho; Jung, Hong-Seok; Cho, Yun-Guen; Jeon, Hyo-Jun; Kim, Nicholas; Goh, Gi-Ho; Park, Sang Hoon, Exhaust gas purifying device for diesel engine.
  11. Yoshida, Kohei; Hirota, Shinya; Asanuma, Takamitsu, Exhaust purification system of internal combustion engine.
  12. Brahma, Avra; Upadhyay, Devesh, System and method for processing NHD slippage of a selective catalyst reduction system.
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