[특허]Diesel engine exhaust filtration system and method

Diesel engine exhaust filtration system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/02
출원번호	US-0549738 (1990-07-09)
발명자 / 주소	Rim Julius J. (2743 Bloomfield Crossing Bloomfield Hills MI 48210) Rim Ho (601-4 Sinsa Dong Kangnam-Ku Seoul KRX)
인용정보	피인용 횟수 : 55 인용 특허 : 0

초록 ▼

A diesel engine exhaust filtration system and method which removes both diesel particulate matter (DPM) and unburned hydrocarbons (UHC) from the exhaust gases. Two filters in parallel are used, each alternating operation as the other regenerates. Each filter is preferred to be constructed in a conventional manner and operates at between 100 to 300 degrees Centigrade. A microprocessor controlled valve system regulates which filter is active and which is regenerating and/or inactive. DPM accumulates at the active filter, with UHC condensing on the DPM. When the active filter becomes clogged, the microprocessor switches it to inactive status, and switches the other filter to active status. Low temperature regeneration is initiated by the microprocessor in which DPM and UHC burn slowly across the entire filter. A recirculation conduit provides for the gases produced by the regeneration to be directed to the air intake of the diesel engine. Any remaining UHC or DPM will be subsequently burned in the combustion chambers of the diesel engine or taken out by the other active filter. When regeneration has completed, the inactive filter will await being switched by the microprocessor to active status when the other filter has become sufficiently clogged that it is time for it to be regenerated.

대표청구항 ▼

A filtration system for removing Diesel particulate matter and unburned hydrocarbons from exhaust gas of a motor vehicle powered by a Diesel engine, said filtration system being connected with an exhaust system of the motor vehicle, the Diesel engine having an air intake for aspiration, said filtration system comprising: a first filter connected with the exhaust system, said first filter being structured so as to trap Diesel particulate matter from the exhaust gas; a second filter connected with the exhaust system, said second filter being structured so as to trap Diesel particulate matter from the exhaust gas; first valve means connected with the exhaust system for selecting at least one of said first and second filters for filtering said exhaust gas; exhaust gas cooling means connected with said exhaust system upstream of said first and second filter means for providing a predetermined exhaust gas temperature at said first and second filters whereat said unburned hydrocarbons will condense out of said exhaust gas, said condensed unburned hydrocarbons at least in part condensing onto said trapped Diesel particulate matter; ignition means connected with said first and second filters for selectively initiating regeneration of said first and second filters; catalytic low temperature regeneration means present at each of said first and second filters during the respective regeneration thereof, said catalytic low temperature regeneration means providing for combustion of said Diesel particulate matter and said unburned hydrocarbons at a predetermined rate; second valve means connected with said first and second filter means for selectively admitting air into one of said first and second filters when said one of said first and second filters is being regenerated; conduit means for routing combustion gases produced by said combustion in any of said first and second filters to the air intake of the Diesel engine, said predetermined rate of combustion producing said combustion gases at a rate which does not adversely affect performance of the Diesel engine; and third valve means connected with said conduit means for selectively routing said gases produced by combustion in any of said first and second filters to the air intake of the Diesel engine.

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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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Diesel engine exhaust filtration system and method 원문보기

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Diesel engine exhaust filtration system and method 원문보기

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이 특허를 인용한 특허 (55)

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