[특허]Apparatus and method for non-intrusive testing of motor vehicle evaporative fuel systems

Apparatus and method for non-intrusive testing of motor vehicle evaporative fuel systems 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-003/26
출원번호	US-0186072 (1994-01-25)
발명자 / 주소	Fournier Thomas J. (Tucson AZ)
출원인 / 주소	Envirotest Systems Corp. (Tucson AZ 02)
인용정보	피인용 횟수 : 22 인용 특허 : 0

초록 ▼

An apparatus and method for the non-intrusive testing of evaporative fuel vapor systems of motor vehicles. A portable pressure control and monitoring unit is inserted into the fuel filler neck of a vehicle. The vapor vent line, leading from the fuel tank to the charcoal canister of the evaporative system, is temporarily clamped off. Pressurized gas is introduced into the unit from an operator\s console, expanding a ring bladder and sealing an annular volume between the unit and the filler neck. Gas is then passed through the unit into the contained volume of the evaporative system. After the neck cap is replaced, an automatic timer deflates the ring bladder, charging the remaining volume of the evaporative system. Pressure decay data is collected and stored in the unit\s digital storage device. Initially, this data is used in a pass/fail determination made by a microprocessor in the unit. Later, the data is downloaded into a separate computer for archival purposes.

대표청구항 ▼

An apparatus for testing the integrity of the seals of a motor vehicle evaporative system having a tank, a tank filler neck with one end connected to the tank, and a filler cap for selectively opening and sealing the other end of the filler neck, the apparatus comprising: a. a body adapted for insertion within the tank filler neck so that an upper end of said body is accessible with the filler cap removed; b. means for selectively expanding at least a portion of said body, from a first reduced diameter, for insertion into the neck, into a second expanded diameter, in which said portion is brought into contingent sealing relation with an inner sidewall of the neck, defining a contained volume between said portion and the tank; c. means for passing pressurized gas through said body into said contained volume, and thereafter sealing the other end of the filler neck with the filler cap; d. means for selectively reducing the diameter of said portion into said first reduced diameter, thereby allowing gas within said contained volume to pressurize the volume remaining between said portion and the filler cap; e. means for measuring the pressure within the pressurized volume for a predetermined period of time to detect leaks in the evaporative system.

이 특허를 인용한 특허 (22)

McCollom, Gregory Michael, Adapter for a capless fuel tank filler neck to test a fuel tank for leaks.
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Thakkar, Vishal; DeZelia, Ann Irene; Schesnuk, Roman, Adaptor for a capless fuel tank filler pipe.
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Petit, Joan M; Fewkes, Roy; Glasgow, Michael B, Apparatus and method for a seal immersion test with aerated fluid.
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Parker, Zachary M.; Pieroni, Kenneth A., Balloon catheter apparatus for high pressure leak detection.
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Parker, Zachary; Pieroni, Kenneth A., Balloon catheter apparatus for high pressure leak detection.
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Parker, Zachary M.; Pieroni, Kenneth A., Balloon catheter apparatus for internal combustion engine component leak detection and high pressure leak detection.
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Weldon, Craig, Diagnostic apparatus and method for an evaporative control system including an integrated pressure management apparatus.
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Shinohara Susumu (Toyota JPX) Teraoka Katsuhiko (Toyota JPX), Fault diagnostic apparatus for evaporated fuel purging system.
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Anderson, Perry R; Anderson, Darla C., Fuel overflow alarm system.
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Harris Robert S., Fuel system leakage detector.
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Docy, Michael J.; Hart, George R.; Bauman, Robert L., Fuel tank tester.
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McCollom, Gregory M., Insert for a capless fuel tank filler neck to test a fuel tank for leaks.
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Garman Benjamin D. ; Albers Jeffrey Maurice ; Merrell Robert James, Method and apparatus for detecting vapor leakage.
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Hoy Robert S. ; Grai Timothy J. ; Hozeska Robert J., Method of non-intrusive testing for a process control interface system having triply redundant remote field units.
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Pavlik, Rudolf, Pressure decay testing system and testing device for a connector and method of testing.
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Carr Bruce,AUX, Pressure testing apparatus.
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Parker, Zachary; Hawkins, Mark C., System and method for detecting microscopic leaks.
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Herzog, Michael; Smith, Gordon Ernest; Sulik, Charles Michael; Pandey, Arun R.; Shishkin, Valeriy Maksimovich; Weedon, Rex Graham; Davis, Mark, System and method for testing fuel tank integrity.
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Herzog,Michael; Smith,Gordon Ernest; Sulik,Charles Michael; Pandey,Arun R.; Shishkin,Valeriy Maksimovich; Weedon,Rex Graham; Davis,Mark, System and method for testing fuel tank integrity.
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Herzog,Michael; Smith,Gordon Ernest; Sulik,Charles Michael; Pandey,Arun Raj; Shishkin,Valeriy Maksimovich; Weedon,Rex Graham; Davis,Mark A., System and method for testing fuel tank integrity.
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Cook, John E.; Perry, Paul D., Temperature correction method and subsystem for automotive evaporative leak detection systems.
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McCollom, Gregory Michael, Universal adapter for a fuel tank filler neck to test a fuel tank for lakes.
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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

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Apparatus and method for non-intrusive testing of motor vehicle evaporative fuel systems 원문보기

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Apparatus and method for non-intrusive testing of motor vehicle evaporative fuel systems 원문보기

초록 ▼

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연구과제 타임라인

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이 특허를 인용한 특허 (22)

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