[특허]Electro-chemical sensor

Electro-chemical sensor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-027/46
출원번호	US-0447475 (1974-03-04)
우선권정보	DT-2311165 (1973-03-07)
발명자 / 주소	Pollner Rudolf (Kornwestheim DT) Friese Karl-Hermann (Leonberg DT) Topp Bernhard (Gerlingen DT) Neidhard Horst (Korntal DT)
출원인 / 주소	Robert Bosch G.m.b.H. (Gerlingen-Schillerhohe DT 03)
인용정보	피인용 횟수 : 71 인용 특허 : 0

초록 ▼

Electro-chemical sensor to determine oxygen concentration in hot internal combustion exhaust gases in the form of a closed, tubular element having a solid ion conductive electrolyte; an electron-conductive coating on the inner surface thereof; a porous or fissured electron conductive layer on the outer surface of said solid electrolyte or on a part of said surface, part of the pores or fissures being macroporous, said layer being of a material which catalyzes the formation from said hot exhaust gases of those compounds that are thermodynamically stable at the exhaust temperature; and a porous protective electrically insulating coating on said porous electron-conductive layer. Preferably, a top coating of a heat-resistant metal is applied, which top coating has additionally properties to act as a getter with respect to poisons affecting the catalyzing material.

대표청구항 ▼

Electro-chemical sensor to determine oxygen concentration in hot internal combustion exhaust gases comprising a closed, tubular element comprising a solid oxygen ion conductive electrolyte which includes a first tubular portion having a closed end and adapted to be exposed to the exhaust gases, and a second connecting tubular portion integral with said first tubular portion for providing an electrical connection to said first tubular portion, said connecting portion having an outwardly extending flange therearound; an electron-conductive layer on the inner surface of said solid electrolyte of at least a part of said first tubular portion; an outer electron conductive layer on at least a part of the outer surface of said solid electrolyte of said first tubular portion, said outer conductive layer being of a material which catalyzes the formation from said hot exhaust gases of those compounds that are thermodynamically stable at the exhaust gas temperature, said outer conductive layer having pores or fissures which are of a diameter, or width, not greater than about the thickness of said outer conductive layer; a porous protective electrically insulating coating covering said outer electron-conductive layer; and an electrically insulating coating covering at least all of the outer surface portions of said solid ion conductive electrolyte of said first tubular portion not covered by said outer conductive layer, and including the outer surface of said tubular element extending up to said flange and covering a portion thereof and all of the outer surface of said solid ion conductive electrolyte of said connecting portion up to and at least adjacent said connecting flange; whereby the entire outer surface of said solid ion conductive electrolyte which may be exposed to said exhaust gases is covered to prevent direct contact of solid ion conductive electrolyte material with exhaust gases.

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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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Electro-chemical sensor 원문보기

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Electro-chemical sensor 원문보기

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