[특허]Method and system for regeneration of a particulate filter

Method and system for regeneration of a particulate filter 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/00
출원번호	US-0020837 (2004-12-22)
등록번호	US-7434388 (2008-10-14)
발명자 / 주소	Warner,Oliver A.
출원인 / 주소	Detroit Diesel Corporation
대리인 / 주소	Brooks Kushman P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 39

초록 ▼

Method, system, and controller for regeneration a particulate filter as a function of fuels emitted with exhaust gases from an engine to an oxidation catalyst. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates that are captu

대표청구항 ▼

What is claimed is: 1. A method for regenerating a particulate filter by controlling fuel delivery to a oxidation catalyst, the oxidation catalyst and particulate filter being in gaseous communication with a four-stroke internal combustion engine having a number of cylinders for internal combustion which emit exhaust gases, the method comprising: determining an amount of fuel to be included within the exhaust gases such that a desired temperature of said exhaust gases may be achieved out of the oxidation catalyst to facilitate regeneration; emitting fuel from the engine as a function of the determined amount of fuel so as to facilitate regeneration of the particulate filter without requiring use of a fuel injection device downstream of the engine; controlling valve timing in order to control an amount of fuel emitted from the engine to the particulate filter, wherein controlling the valve timing includes controlling opening or closing of at least one of an intake valve or exhaust valve such that a positioning of the at least one controlled valve is not fixed during all four strokes of the four-stroke engine; determining a desired exhaust gas temperature for gases emitted from the engine to facilitate regeneration, and emitting exhaust gases from the engine at the desired exhaust gas temperature by operating the engine with at least one unfueled cylinder; and wherein regeneration of the particulate filter is required when the engine is operating at idle speed, and wherein emitting exhaust gases from the engine at the desired exhaust gas temperature includes operating the engine at an increased idle speed and with at least one unfueled cylinder and one or more cylinders having fuel injected below the auto ignition temperature and pressure. 2. The method of claim 1 further comprising determining a the number of cylinders with altered exhaust valve events as a function of the desired exhaust gas temperature. 3. The method of claim 1 further comprising increasing at least one of injected fuel quantity and changing injection timing for cylinders with unmodified exhaust events to maintain at least one of a requested engine speed and output power. 4. The method of claim 1 wherein the fuel is emitted by controlling fuel injection quantity and timing of one or more of the cylinders and altering exhaust valve events of said cylinders so as to control fuel emitted from said cylinders independently of the remaining cylinders. 5. The method of claim 4 further comprising controlling the fuel injection timing such that fuel is injected while cylinder conditions are below auto ignition conditions so that the non-combusted fuel is emitted from the engine with the exhaust gases. 6. The method of claim 5 further comprising determining the auto ignition condition as a function of at least one of cylinder pressure and temperature. 7. The method of claim 4 further comprising opening one or more exhaust valves during the compression stroke of the one or more cylinders such that fuel is injected below the auto ignition conditions and at least a portion of the injected fuel is emitted from the said cylinders without combusting. 8. The method of claim 4 further comprising selecting a number of cylinders having fuel injected below the auto ignition conditions as a function of the determined amount of fuel. 9. The method of claim 8 further comprising at least one of controlling the quantity and timing of fuel injection as a function of the determined amount of fuel and exhaust gas temperature out of the oxidation catalyst. 10. The method of claim 8 further comprising determining the predefined temperature range as function of soot burn rates of the particulate filter. 11. A method for regenerating a particulate filter by controlling fuel delivery to a oxidation catalyst, the oxidation catalyst and particulate filter being in gaseous communication with an internal combustion engine having a number of cylinders for internal combustion which emit exhaust gases, the method comprising: determining an amount of fuel to be included within the exhaust gases such that a desired temperature of said exhaust gases may be achieved out of the oxidation catalyst to facilitate regeneration; emitting fuel from the engine as a function of the determined amount of fuel so as to facilitate regeneration of the particulate filter without requiring use of a fuel injection device downstream of the engine; determining a desired exhaust gas temperature for gases emitted from the engine to facilitate regeneration, and emitting exhaust gases from the engine at the desired exhaust gas temperature by operating the engine with at least one unfueled cylinder; and wherein regeneration of the particulate filter is required when the engine is operating at idle speed, and wherein emitting exhaust gases from the engine at the desired exhaust gas temperature includes operating the engine at an increased idle speed and with at least one unfueled cylinder and one or more cylinders having fuel injected below the auto ignition temperature and pressure.

이 특허에 인용된 특허 (39)

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Weber,James R.; Leman,Scott A.; Coleman,Gerald N.; Duffy,Kevin P.; Fluga,Eric C.; Kilkenny,Jonathan P.; Pierpoint,David A., Combustion engine including fluidically-driven engine valve actuator.
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Gui, Xinqun; Sun, Jinhui; Omachi, Steven T.; Lei, Xiaoyan, Control strategy for regenerating a particulate filter in an exhaust system of an engine having a variable valve actuation mechanism.
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Minami, Toshitaka, Device for purifying exhaust gas of diesel engines.
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Kinugawa, Masumi; Sekiguchi, Kiyonori; Fujita, Tatsuya, Device for purifying exhaust gas of engines.
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Hardy James A. (Playa Del Rey CA), Diesel engine particulate trap regeneration system.
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Tashiro, Yoshihisa; Imai, Takehito; Suzuki, Tsuneo; Ochi, Naofumi; Gabe, Masashi, Diesel particulate filter unit and regeneration control method of the same.
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Foster, Michael Ralph; Foster, Matthew G.; Price, Kenneth S., Engine cylinder deactivation to improve the performance of exhaust emission control systems.
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Morimoto, Manabu; Oohashi, Kazuya; Terada, Mikio, Exhaust emission control device.
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Kuboshima, Tsukasa; Okugawa, Shinichiro; Saito, Makoto; Yahata, Shigeto; Kinugawa, Masumi, Exhaust gas cleaning system having particulate filter.
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Saito, Makoto; Yahata, Shigeto; Kinugawa, Masumi; Sekiguchi, Kiyonori; Kuboshima, Tsukasa, Exhaust gas purification system having particulate filter.
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Koga,Toshimasa; Kawashima,Junichi; Tsutsumoto,Naoya; Kondou,Terunori; Otake,Makoto; Inoue,Takao, Exhaust gas purifying system of internal combustion engine.
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Ootake, Makoto, Fuel injection control for diesel engine.
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Khair, Magdi K.; Webb, Cynthia C.; Bartley, Gordon J.; Sharp, Christopher A., Integrated system for controlling diesel engine emissions.
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Schaller, Johannes; Weber, Georg; Horndorf, Horst; Khatchikian, Peter, Method and device for controlling an exhaust gas aftertreatment system.
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Strohmaier, Rainer; Zimmermann, Stefan; Bauer, Martin, Method and device for controlling an exhaust gas aftertreatment system.
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Bolt Heinz (Wolfratshausen DEX) Walser Franz (Murnau DEX) Schoneborn Axel (Rodenbach DEX), Method and device for removing particles from exhaust gases from internal combustion engines.
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Plote, Holger, Method and device for the control of an exhaust gas treatment system.
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Meyer, Garth Michael; Asik, Joseph Richard, Method and system for controlling a regeneration cycle of an emission control device.
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Moraal Paul Eduard,NLX ; Chevalier Alain Marie Roger,FRX ; Kuenstler Johannes,DEX ; Christen Urs,CHX, Method for controlling an exhaust gas temperature of an engine for improved performance of exhaust aftertreatment systems.
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Druckhammer, Jens; Schulze, Frank; Lang, Axel, Method for controlling the regeneration of an NOx storage converter.
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Corinna Pfleger DE; Hong Zhang DE, Method for regenerating a NOx storage catalytic converter for an internal combustion engine.
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Klaus Neumann DE; Stefan Schneider DE, Method for regenerating an activated carbon filter loaded with hydrocarbons.
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Virk Kashmir S. (Hopewell Junction NY), Method for rejuvenating an exhaust gas filter for a diesel engine.
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Rossi Sebastiano Giovanni Maria,ITX ; Canale Silvio,ITX, Method of automatically initiating regeneration of a particulate filter of a diesel engine with a rail injection system.
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Tonetti, Marco; Rossi Sebastiano, Giovanni Maria; Mugnaini, Maurizio; Rellecati, Pierluigi, Method of initiating regeneration of a particulate filter for a direct-injection diesel engine with a common rail injection system.
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Matthias Wiese DE, Method of regenerating an activated-carbon canister.
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Brehob, Diana D., Method to increase temperature in an exhaust aftertreatment device coupled to a camless engine.
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Erdmannsdoerfer Hans (Ludwigsburg DEX) Numrich Rudi (Weinstadt DEX) Weyh Gerd (Leonberg-Eltingen DEX) Wagner Manfred (Stuttgart DEX) Zundel Fritz (Besigheim DEX), Process and apparatus for the burning off of carbon (SOOT) deposited on exhaust gas filters.
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Abthoff Jrg (Plderhausen DEX) Schuster Hans-Dieter (Schorndorf DEX) Langer Hans-Joachim (Remseck DEX) Strohmer Erwin (Berglen DEX) Gabler Rolf (Waiblingen DEX) Schulte Roland (Korb DEX), Process and apparatus for the regeneration of a soot-particle filter in an internal-combustion engine.
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Goerlich Dieter (Emmering DEX), Process and device for closed-loop and open-loop control of the output of a burner.
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Dementhon Jean-Baptiste,FRX ; Martin Brigitte,FRX ; Pajot Olivier,FRX, Process and device for controlling a particulate filter.
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Dementhon Jean-Baptiste,FRX ; Martin Brigitte,FRX ; Bourry Bruno,FRX, Process and device for local and controlled regeneration of a particle filter.
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Pischinger Franz (Aachen DEX) Lepperhoff Gerhard (Eschweiler DEX), Process and system for the regeneration of particulate filter traps.
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Santiago Enrique (Diedorf DEX) Kugland Peter (Friedberg DEX) Ullmer Alois (Munich DEX), Process for the automatic regeneration of a soot filter in a passenger vehicle having a diesel engine.
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Olivier Salvat FR; Patrice Le Tallec FR, System for assisting the regeneration of a particle filter integrated into an exhaust line of a motor vehicle diesel engine.
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Pischinger Franz (Aachen DEX) Lepperhoff Gerhard (Eschweiler DEX), System for the regeneration of a particulate filter trap.
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Webb, Cynthia Chaffin; Weber, Phillip Anthony; Khair, Magdi K., Systems and methods for controlling diesel engine emissions.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Method and system for regeneration of a particulate filter 원문보기

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Method and system for regeneration of a particulate filter 원문보기

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