[특허]Exhaust gas purification system for an internal combustion engine

Exhaust gas purification system for an internal combustion engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/28
출원번호	US-0738194 (1991-07-30)
우선권정보	JP-0029081 (1991-01-31); JP-0040693 (1991-02-14)
발명자 / 주소	Nomura Hiroshi (Susono JPX) Hirose Katsuhiko (Susono JPX) Kotani Takeshi (Mishima JPX) Matsushita Souichi (Susono JPX) Nakanishi Kiyoshi (Susono JPX) Ohno Eishi (Mishima JPX) Nomura Kenichi (Mishima
출원인 / 주소	Toyota Jidosha Kabushiki Kaisha (Toyota JPX 03)
인용정보	피인용 횟수 : 73 인용 특허 : 0

초록 ▼

An exhaust gas purification system for an internal combustion engine includes an engine capable of fuel combustion at lean air-fuel ratios, a catalyst constructed of zeolite carrying at least one kind of metal selected from transition metals and noble metals to reduce NOx under oxidizing conditions and in the presence of HC, engine operating condition detecting means for detecting the current engine operating condition, engine operating range determining means for determining whether or not the current engine operating condition is within an insufficient HC amount range, and an HC amount control means for controlling the amount of HC included in the exhaust gas when the engine operating range determining means determines that the engine operating condition is within the insufficient HC amount range. The HC amount control means degrades automization or evaporation of fuel injected from a fuel injection valve to thereby generate unburned fuel and to increase the HC amount in the exhaust gas, so that the NOx purification rate of the catalyst is improved.

대표청구항 ▼

An exhaust gas purification system for an internal combustion engine comprising: an internal combustion engine capable of fuel combustion at lean air-fuel ratios, the engine having a combustion chamber, an intake conduit, an exhaust conduit, and a fuel injection valve for injecting fuel into the intake conduit or the combustion chamber; a catalyst installed in the exhaust conduit of the engine and constructed of zeolite carrying at least one kind of metal selected from transition metals and noble metals to reduce nitrogen oxides included in exhaust gas from the engine under oxidizing conditions and in the presence of hydrocarbons; engine operating condition detecting means for detecting a current operating condition of the engine; engine operating range determining means for determining whether or not the current engine operating condition detected by the engine operating condition detecting means is within an insufficient HC amount range where an amount of hydrocarbons included in the exhaust gas from the engine and supplied to the catalyst is insufficient for the catalyst to reduce the nitrogen oxides included in the exhaust gas; and HC amount control means for momentarily degrading atomization of fuel injected from the fuel injection valve to thereby increase the amount of hydrocarbons included in the exhaust gas from the engine when the engine operating range determining means determines that the current engine operating condition is within the insufficient HC amount range.

이 특허를 인용한 특허 (73)

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Hanaoka,Hiroshi; Kuroda,Osamu; Doi,Ryouta; Iizuka,Hidehiro; Ogawa,Toshio; Yamashita,Hisao; Azuhata,Shigeru; Kitahara,Yuichi; Hiratsuka,Toshifumi; Okude,Kojiro; Shinotsuka,Norihiro; Manaka,Toshio, Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine.
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Takagi Naoya,JPX ; Murai Toshimi,JPX ; Hyodo Yoshihiko,JPX, Exhaust gas purifying of lean-burn internal combustion engine.
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Surnilla, Gopichandra; Smith, Stephen B., Idle speed control for lean burn engine with variable-displacement-like characteristic.
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Bidner David Karl ; Surnilla Gopichandra, Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent.
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Michael John Cullen ; David Karl Bidner ; Gopichandra Surnilla ; Jeffrey Scott Hepburn ; Jerry D. Robichaux, Method and apparatus for controlling lean operation of an internal combustion engine.
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Robichaux, Jerry D.; Bidner, David Karl; Surnilla, Gopichandra, Method and apparatus for controlling lean-burn engine based upon predicted performance impact.
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David Karl Bidner ; Gopichandra Surnilla, Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency.
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Surnilla, Gopichandra; Bidner, David K., Method and apparatus for controlling lean-burn engine to purge trap of stored NOx.
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Hepburn, Jeffrey Scott; Surnilla, Gopichandra; Robichaux, Jerry D.; Cullen, Michael John, Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine.
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Jerry D. Robichaux ; Gopichandra Surnilla ; Jeffrey Scott Hepburn ; Michael John Cullen, Method and apparatus for measuring lean-burn engine emissions.
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David Karl Bidner ; Gopichandra Surnilla, Method and apparatus for optimizing purge fuel for purging emissions control device.
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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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Meyer, Garth Michael; Asik, Joseph Richard, Method and system for controlling an emission control device based on depletion of device storage capacity.
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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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연합인증

Exhaust gas purification system for an internal combustion engine 원문보기

초록 ▼

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Exhaust gas purification system for an internal combustion engine 원문보기

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이 특허를 인용한 특허 (73)

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