[특허]Exhaust gas purification system for a lean burn engine

[미국특허] Exhaust gas purification system for a lean burn engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/00
출원번호	US-0468499 (1999-12-21)
발명자 / 주소	King Edward Thomas Vanderslice John
출원인 / 주소	Ford Motor Company
대리인 / 주소	Drouillard
인용정보	피인용 횟수 : 58 인용 특허 : 9

초록 ▼

An exhaust gas purification system for an engine equipped with a turbocharger and an exhaust pipe having a NO.sub.x conversion catalyst therein. The system comprises a reservoir for storing pressurized air received from the turbocharger, a reductant injector in fluid communication with a reductant supply, and a mixing chamber in fluid communication with the reservoir and connected to the reductant injector. The reductant injector is responsive to an injection signal for atomizing and injecting a quantity of reductant into the mixing chamber. The mixing chamber is in fluid communication with the exhaust pipe for introducing a quantity of air and reductant mixture into the exhaust gas flow upstream of the NO.sub.x conversion catalyst. In one aspect of the invention, the system includes an engine control unit, a valve connected between the reservoir and the mixing chamber, and a differential pressure transducer positioned between the mixing chamber and the exhaust pipe for measuring the pressure differential across the mixing chamber and exhaust pipe upstream of the NO.sub.x conversion catalyst. The engine control unit controls the valve to introduce a quantity of pressurized air from the reservoir into the mixing chamber to maintain the pressure differential between the mixing chamber and exhaust pipe substantially constant.

대표청구항 ▼

[ What is claimed is:] [1.] An exhaust gas purification system for an engine equipped with a turbocharger and an exhaust pipe having a NO.sub.x conversion catalyst therein, the system comprising:a reservoir for storing pressurized air received from the turbocharger;a reductant injector in fluid communication with a reductant supply, the reductant injector responsive to an injection signal for atomizing and injecting a quantity of reductant; anda mixing chamber in fluid communication with the reservoir and connected to the reductant injector, the mixing chamber in fluid communication with the exhaust pipe for introducing a quantity of air and reductant mixture from the reservoir and reductant injector into the exhaust gas flow upstream of the NO.sub.x conversion catalyst.

이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

Abe Yukihiro,JPX ; Kawatsu Takao,JPX ; Iwamoto Yoshihide,JPX, Black smoke eliminating device for internal combustion engine and exhaust gas cleaning system including the device.
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Araki Yasushi (Susono JPX) Hirota Shinya (Susono JPX), Engine exhaust gas purification device.
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Usui Toshifumi (Katsuta JPX) Yanagisawa Shozo (Ibaraki JPX), Exhaust emission control apparatus for diesel engine.
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Mathes Wieland,DEX ; Hofmann Lothar,DEX ; Schoppe Detlev,DEX ; Achleitner Erwin,DEX ; Tost Rainer,DEX, Method and device for decomposing nitrogen oxides in the exhaust gas of an internal combustion engine.
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Achleitner Erwin (Regensburg DEX) Koch Achim (Tegernheim DEX), Method for controlling the fuel supply for an internal combustion engine with a heatable catalytic converter.
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Lane William H. (Chillicothe IL) Peterson Randy N. (Edelstein IL) Smith Aaron L. (East Peoria IL), Method for treating an exhaust gas stream for the removal on NOx.
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Arai Minoru (Fujisawa JPX), Regeneration system for particulate trap.
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Honji Akio (Hitachi JPX) Ogawa Toshio (Takahagi JPX) Kuroda Osamu (Hitachi JPX) Yamashita Hisao (Hitachi JPX) Tachi Takahiro (Hitachi JPX) Miyadera Hiroshi (Hitachi JPX) Fujishita Masakatsu (Mito JPX, System for controlling oxygen concentration in exhaust gas and exhaust gas cleaning system employing the same.
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이 특허를 인용한 특허 (58) 인용/피인용 타임라인 분석

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Hirata, Kiminobu; Masaki, Nobuhiko; Yano, Masakazu, Apparatus for judging condition of injection of reducing agent incorporated in exhaust gas purification system.
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Cunningham, Michael; Stroia, Bradlee, Apparatus, system, and method for regenerating an exhaust gas treatment device.
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Kleinfeld, Christopher J., Bypass fluid system for exhaust aftertreatment.
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Kinugawa,Masumi; Sekiguchi,Kiyonori; Kuboshima,Tsukasa, Catalyst deterioration detecting apparatus.
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Kleinfeld, Christopher J., Charged air bypass for aftertreatment combustion air supply.
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Boddy, Douglas Ernst; Dell′Eva, Mark Louis; Barrows, Eric O.; McCarthy, Jr., James Edward; Barla, John Robert, Closed loop control of exhaust system fluid dosing.
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Mitchell, Douglas A., Constant mass flow injection system.
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Mitchell, Douglas A., Constant mass flow injection system.
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Joseph A. Patchett ; Rudolfus Petrus Verbeek NL; Karl Richard Grimston GB; Gary Wayne Rice ; John Lawrence Calabrese ; Mathijs Van Genderen NL, Control system for mobile NOx SCR applications.
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Patchett, Joseph A.; Verbeek, Rudolfus Petrus; Grimston, Karl Richard; Rice, Gary Wayne; Calabrese, John Lawrence; Genderen, Mathijs Van, Control system for mobile NOx SCR applications.
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Upadhyay, Devesh; van Nieuwstadt, Michiel J.; Ruona, William Charles, Diesel aftertreatment system.
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Simpson,Paul; Ketcher,David Arthur, Diesel aftertreatment systems.
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van Nieuwstadt, Michiel J.; Upadhyay, Devesh; Goebelbecker, Michael; Ruona, William Charles, Diesel aftertreatment systems.
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van Nieuwstadt,Michiel J.; Upadhyay,Devesh; Goebelbecker,Michael; Ruona,William Charles, Diesel aftertreatment systems.
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Hirata, Kiminobu; Akagawa, Hisashi; Nakamura, Shuichi; Ueno, Hiroki; Sakai, Ikuo, Engine exhaust emission purification apparatus.
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Hirata, Kiminobu; Akagawa, Hisashi; Nakamura, Shuichi; Ueno, Hiroki; Sakai, Ikuo, Engine exhaust emission purification apparatus.
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Nishiyama, Toshihiko; Sato, Hiroki, Exhaust emission control device of internal combustion engine.
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Hirata,Kiminobu; Masaki,Nobuhiko; Miyata,Tatsuji, Exhaust emission purifying apparatus for engine.
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Masuda, Kouji; Hirata, Kiminobu; Akagawa, Hisashi; Nakamura, Shuichi; Ueno, Hiroki; Sakai, Ikuo, Exhaust emission purifying apparatus for engine.
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Matsunaga, Hideki; Katou, Toshikazu; Kurita, Hiroyuki; Kumazawa, Shinji; Motomura, Masayuki; Yazawa, Katsunori, Exhaust emission purifying apparatus for engine.
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Hirata, Kiminobu; Masaki, Nobuhiko; Akagawa, Hisashi; Yajima, Yuji, Exhaust emission purifying apparatus for internal combustion engine.
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Tennison, Paul Joseph; Laing, Paul M.; Lambert, Christine Kay; Hammerle, Robert Henry; Ruona, William Charles, Exhaust gas aftertreatment systems.
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Suzuki,Hisanobu; Toyota,Tadashi, Exhaust gas control apparatus and exhaust gas control method for internal combustion engine.
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Yan, Mi; Qi, Baohua, Fluid delivery apparatus with flow rate sensing means.
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Genderen, Mathijs Van, Method for determining catalyst cool down temperature.
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[미국특허] Exhaust gas purification system for a lean burn engine 원문보기

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[미국특허] Exhaust gas purification system for a lean burn engine 원문보기

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