[특허]Engine exhaust system for reduction of hydrocarbon emissions

Engine exhaust system for reduction of hydrocarbon emissions 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-033/02
출원번호	US-0734146 (1991-07-22)
발명자 / 주소	Day J. Paul (Big Flats NY) Socha Jr. Louis S. (Painted Post NY)
출원인 / 주소	Corning Incorporated (Corning NY 02)
인용정보	피인용 횟수 : 64 인용 특허 : 0

초록 ▼

An engine exhaust system disclosed which is designed to reduce hydrocarbon emissions caused by the evaporation of fuel from the fuel tank and by the inefficiency of combustion and catalytic conversion during cold engine start-up. This system utilizes molecular sieves, such as high-silica zeolites, which adsorb hydrocarbons evaporating from the fuel tank or emitted during engine start-up, before the catalytic converter has attained an effective operating temperature. This system is designed so that hydrocarbons that would otherwise be emitted to the atmosphere from the fuel tank or by passing through the converter unconverted are held within the system either for combustion in the engine or passage through the converter once it is operating efficiently.

대표청구항 ▼

An engine exhaust system for reducing evaporative emissions of a hydrocarbon fuel comprising an engine; a fuel tank, including a vapor space, for storing hydrocarbon fuel for said engine; molecular sieve means for adsorbing hydrocarbons evaporating from said fuel, said molecular sieve means being capable of having hydrocarbons desorbed therefrom upon heating to a desorption temperature; vapor-conveyance means for providing communication between said molecular sieve means and the vapor space of said fuel tank; and purge means for conveying a heated purge stream through said molecular sieve means and then conveying at least part of said purge stream back to the engine.

이 특허를 인용한 특허 (64)

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Elwart, Shane; Uhrich, Michael James; Kerns, James Michael; Lupescu, Jason Aaron, Hydrocarbon retaining system and method.
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Leone,Thomas; Cunningham,Ralph Wayne, System and method for purging fuel vapors using exhaust gas.
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Maganas, Thomas C., System for transforming organic waste materials into thermal energy and electric power.
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Ulrey, Joseph Norman; Pursifull, Ross Dykstra, Variable venturi system and method for engine.
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Engine exhaust system for reduction of hydrocarbon emissions 원문보기

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