[특허]Malfunction detection apparatus for detecting malfunction in evaporated fuel purge system

Malfunction detection apparatus for detecting malfunction in evaporated fuel purge system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-033/02 F02B-077/00
출원번호	US-0774589 (1991-10-10)
우선권정보	JP-0275608 (1990-10-15)
발명자 / 주소	Otsuka Takayuki (Susono JPX)
출원인 / 주소	Toyota Jidosha Kabushiki Kaisha (Toyota JPX 03)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

An apparatus for detecting a malfunction in an evaporated fuel purge system for use in an internal combustion engine. The apparatus includes a vapor passage connecting a fuel tank to a canister for feeding fuel vapor from the fuel tank into the canister, a purge passage connecting the canister to an intake passage of the engine for feeding the fuel vapor adsorbed in an adsorbent in the canister into the intake passage, an air inlet passage connecting an air inlet port of the canister to the atmosphere, a first control valve provided for controlling a flow of the adsorbed fuel vapor from the canister to the intake passage, a pressure sensor provided for outputting a signal indicative of a pressure in the air inlet passage, a second control valve for controlling a flow of external air fed into the vapor passage from the air inlet port of the canister, and a malfunction detection part responsive to the signal outputted by the pressure sensor for detecting a malfunction in the evaporated fuel purge system.

대표청구항 ▼

An evaporated fuel purge system for use in an internal combustion engine, comprising: a fuel tank in which fuel is evaporated into a fuel vapor; a canister containing an adsorbent for adsorbing the fuel vapor from the fuel tank, an air inlet port at a bottom portion of the canister, and an air inlet passage connecting the air inlet port to the atmosphere; a vapor passage connecting said fuel tank to said canister for feeding the fuel vapor from said fuel tank into said canister; a purge passage connecting said canister to an intake passage of the internal combustion engine for feeding the adsorbed fuel vapor in said adsorbent in said canister into said intake passage; a first control valve provided at an intermediate portion in said purge passage for controlling a flow of the adsorbed fuel vapor being fed, due to a vacuum pressure in said intake passage, from said canister to said intake passage; a second control valve provided in said air inlet passage of said canister for controlling a flow of external air being fed, due to a vacuum pressure in said vapor passage, into the vapor passage through the canister; a pressure sensor provided at an intermediate portion in said air inlet passage between said canister and said second control valve for outputting a signal indicating pressure in said air inlet passage; valve control means for controlling opening and closing operations of each of said first and second control valves when a malfunction detection is made; and malfunction detection means, responsive to said signal outputted by said pressure sensor, for determining whether there is a malfunction in said evaporated fuel purge system, wherein a malfunction detection is made by said malfunction detection means, both when the first and second control valves are closed by said valve control means, and when the second control valve is closed and the first control valve is opened by said valve control means.

이 특허를 인용한 특허 (36)

Fujimoto Takeshi,JPX ; Nakayama Masaaki,JPX ; Mukai Yasuo,JPX ; Dohta Hisayo,JPX ; Wakahara Keiji,JPX ; Morikawa Junya,JPX ; Miwa Makoto,JPX, Abnormality detection apparatus for preventing fuel gas emission.
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Veinotte, Andre; Perry, Paul, Apparatus and method for preventing resonance in a fuel vapor pressure management apparatus.
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Kawamura Katsuhiko,JPX ; Kawano Akihiro,JPX, Apparatus for detecting evaporative emission control system leak.
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Perry,Paul D.; Veinotte,Andre, Apparatus, system and method of establishing a test threshold for a fuel vapor leak detection system.
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Akita, Tatsuhiko, Control apparatus for internal combustion engine.
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Nishioka Futoshi,JPX ; Sakamoto Katsuhiko,JPX ; Hosokai Tetsushi,JPX ; Shigihama Shingo,JPX ; Takano Susumu,JPX, Diagnostic system for detecting leakage of fuel vapor from purge system.
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Shigetaka Kuroda JP; Kazutomo Sawamura JP; Masayoshi Yamanaka JP; Hiroshi Maruyama JP; Masataka Chikamatsu JP; Shoichi Nemoto JP; Takeshi Suzuki JP, Evaporative fuel-processing system for internal combustion engines.
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Kishi, Ryoyu, Flow control valve and vapor fuel processing apparatus having the same.
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Veinotte,Andre; Boucher,William J., Flow sensor for purge valve diagnostic.
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Veinotte,Andre, Flow sensor integrated with leak detection for purge valve diagnostic.
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Veinotte, Andre, Flow-through diaphragm for a fuel vapor pressure management apparatus.
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Harris Robert S., Fuel cap leakage tester.
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Harris Robert S. ; Bowden Bruce K. ; Foltz Dean C., Fuel cap leakage tester.
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Veinotte,Andre, Fuel system and method for managing fuel vapor pressure with a flow-through diaphragm.
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Jackson, Robert; Cadman, William R.; Prout, David Edward, Fuel system blockage detection and blockage location identification systems and methods.
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Harris Robert S., Fuel system leakage detector.
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Nakashima Akihiro (Chiryu JPX) Iida Hisashi (Aichi JPX) Isomura Shigenori (Kariya JPX) Koseki Hideki (Aichi JPX) Tsuji Takao (Tokai JPX), Gaseous fuel flow rate detecting system.
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Perry, Paul; Veinotte, Andre, In-use rate based calculation for a fuel vapor pressure management apparatus.
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Jamrog James Richard ; Stukenborg Douglas Alan, Method and system for rich condition vapor purge reset based on tank vacuum level condition.
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Veinotte,Andre, Method for determining vapor canister loading using temperature.
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Grunwald, Oliver; Prinz, Oliver, Method for inspecting a tank ventilation device, control device, and internal combustion engine.
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Nankee ; II Robert J. (Canton MI) Moote Richard K. (Ann Arbor MI) Dupuis Charles B. (St. Clair Shores MI) Krozek Dennis A. (Canton MI) Huff Shean P. (Ann Arbor MI) Boss Erika J. (Plymouth MI) Schuelk, Method of controlling a vapor storage canister for a purge control system.
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Blomquist William B. (Clarkston MI) Dawson Gary D. (Rochester MI) Richardson Roland T. (Detroit MI) Tallarek Glen (Grosse Pointe Woods MI) Letcher John E. (Glendale AZ) Hope Mark E. (Ann Arbor MI), Method of leak detection for an evaporative emission control system.
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Blomquist William B. (Clarkston MI) Dawson Gary D. (Rochester MI) Richardson Roland T. (Detroit MI) Tallarek Glen (Grosse Pointe Woods MI), Method of pinched line detection for an evaporative emission control system.
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Perry,Paul; Veinotte,Andre, Rationality testing for a fuel vapor pressure management apparatus.
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Jackson, Robert; Cadman, William R.; Rasmussen, Paul William, System and method for controlling a vacuum pump that is used to check for leaks in an evaporative emissions system.
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Jackson, Robert, System and method for diagnosing flow through a purge valve based on a fuel system pressure sensor.
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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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Jackson, Robert; Van Gilder, John F., System and method to diagnose fuel system pressure sensor.
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Dudar, Aed M.; Yang, Dennis Seung-Man; Pearce, Russell Randall, Systems and methods for operating an evaporative emissions system.
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Ito Tokiji (Toyota JPX), Testing apparatus for fuel vapor treating device.
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Ito Tokiji,JPX ; Shinohara Susumu,JPX, Testing apparatus for fuel vapor treating device.
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Nomura Tokuhisa,JPX ; Miyakoshi Hironori,JPX, Testing method for fuel vapor treating apparatus.
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Fabre, Laurent, Vacuum detection component.
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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

Malfunction detection apparatus for detecting malfunction in evaporated fuel purge system 원문보기

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Malfunction detection apparatus for detecting malfunction in evaporated fuel purge system 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (36)

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