[특허]Abnormality detecting apparatus for use in fuel transpiration prevention systems

Abnormality detecting apparatus for use in fuel transpiration prevention systems 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-019/00
출원번호	US-0862507 (1992-04-02)
우선권정보	JP-0070001 (1991-04-02); JP-0087005 (1991-04-18); JP-0234761 (1991-09-13)
발명자 / 주소	Yamada Jun (Nagoya JPX) Sakakibara Shuji (Okazaki JPX) Okuda Yoshihiro (Kariya JPX) Eino Tomomi (Kariya JPX) Iida Hisashi (Aichi JPX) Nagata Kiyoshi (Anjo JPX) Suzumura Toshihiro (Nagoya JPX)
출원인 / 주소	Nippondenso Co., Ltd. (Kariya JPX 03)
인용정보	피인용 횟수 : 56 인용 특허 : 0

초록 ▼

An apparatus for detecting an abnormality of a fuel transpiration prevention system which includes a canister with an absorbing device and a control valve provided in a passage between a fuel tank and an intake pipe of an internal combustion engine so that a fuel gas generated within the fuel tank is absorbed by the absorbing device of the canister and introduced into the intake pipe by opening and closing the control valve in accordance with an operating state of said internal combustion engine. The apparatus includes a pressure detecting device for detecting a pressure within the fuel tank and a deviation calculating unit responsive to the output of the pressure detecting device for calculating a deviation between the pressure detected when the control valve opens the passage and the pressure detected when the control valve closes the passage. The apparatus decides an abnormality of the fuel gas supply system on the basis of the deviation calculated by the deviation calculating unit. This arrangement allows accurate abnormality detection throughout the fuel transpiration prevention system.

대표청구항 ▼

A fuel transpiration prevention system for preventing transpiration of a fuel gas generated by fuel encased within a liquid fuel tank and supplied to an internal combustion engine, said apparatus comprising: a fuel gas supply system including: canister means encasing an absorbing device for absorbing said fuel gas generated within said fuel tank; first passage means provided between said canister means and said fuel tank for introducing said fuel gas from said fuel tank to said canister means; second passage means provided between said canister and an intake pipe of said internal combustion engine for leading the fuel gas absorbed by said absorbing device into said intake pipe of said internal combustion engine due to a negative pressure generated within said intake pipe; valve means provided in said second passage means for opening and closing said second passage in accordance with an operating condition of said internal combustion engine; pressure detecting means for detecting a pressure within said fuel tank and generating a signal indicative of the detected pressure; deviation calculating means responsive to said signal generated from said pressure detecting means for calculating a deviation between the pressure detected when said valve means opens said second passage means and the pressure detected when said valve means closes said second passage means; and abnormality decision means for deciding an abnormality of said fuel gas supply system on the basis of said deviation calculated by said deviation calculating means.

이 특허를 인용한 특허 (56)

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Yamazaki Kazumi,JPX ; Wakashiro Teruo,JPX ; Hidano Koichi,JPX ; Hara Takeshi,JPX ; Nakajima Takeaki,JPX, Evaporative fuel-processing system for internal combustion engines for vehicles.
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Paul D. Perry CA, Fluid flow through an integrated pressure management apparatus.
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Perry, Paul D., Fluid flow through an integrated pressure management apparatus.
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Tamura Hiroshi (Kariya JPX) Morikawa Junya (Kasugai JPX) Maeda Kazuto (Nisshin JPX) Koyama Nobuhiko (Nagoya JPX), Fuel evaporation gas transpiration prevention system.
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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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Paul D. Perry CA; John E. Cook CA, Fuel system with intergrated pressure management.
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Morinaga, Syujiro; Maegawa, Yoshinori; Wakahara, Keiji; Miwa, Makoto, Fuel vapor control system with leak check.
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Morinaga, Syujiro; Maegawa, Yoshinori; Wakahara, Keiji; Miwa, Makoto, Fuel vapor control system with leak check.
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Sako, Masaaki; Ota, Hideaki, Gum substance monitoring apparatus, gum substance detecting method, and gas turbine system.
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Perry, Paul D., Housing for an integrated pressure management apparatus.
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Perry, Paul D., Integrated pressure management apparatus having electronic control circuit.
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Paul D. Perry CA, Integrated pressure management apparatus providing an on-board diagnostic.
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Paul D. Perry CA; John E. Cook CA, Integrated pressure management system for a fuel system.
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Fabre, Laurent, Leak detection in a closed vapor handling system using a pressure switch, temperature and statistics.
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Steckler, Michael J.; Melby, Steve L., Leak detection method for an evaporative emission system including a flexible fuel tank.
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Nagasaki,Kenji; Ito,Tokiji; Miyahara,Hideki, Leak detector for fuel vapor purge system.
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Wakahara, Keiji; Morinaga, Syujiro; Maegawa, Yoshinori; Miwa, Makoto, Leak-check apparatus of fuel-vapor-processing system, fuel-temperature estimation apparatus and fuel-temperature-sensor diagnosis apparatus.
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Wakahara,Keiji, Leak-check apparatus of fuel-vapor-processing system, fuel-temperature estimation apparatus and fuel-temperature-sensor diagnosis apparatus.
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Majima Yoshihiro,JPX ; Fujimoto Takeshi,JPX ; Wakahara Keiji,JPX ; Morikawa Junya,JPX ; Isomura Shigenori,JPX ; Miwa Makoto,JPX, Leakage diagnosing device for fuel evaporated gas purge system.
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Peters, Mark W.; Jentz, Robert Roy; Butler, Darrell Erick; Dudar, Aed Mohammad, Method and system for fuel vapor control.
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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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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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Perry,Paul D.; Cook,John E., Method of managing pressure in a fuel 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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Miwa Makoto,JPX ; Majima Yoshihiro,JPX, More reliable leakage diagnosis for evaporated gas purge system.
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Paul D. Perry CA, Pressure operable device for an integrated pressure management apparatus.
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Menke, Andreas; Oesterle, Josef; Braunwarth, Dirk, Pressure tank system for a motor vehicle.
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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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Jackson, Robert; Van Gilder, John F., System and method to diagnose fuel system pressure sensor.
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Dudar, Aed M., Systems and methods for canister filter diagnostics.
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Shinohara Susumu,JPX, Testing apparatus for fuel vapor treating device.
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Abnormality detecting apparatus for use in fuel transpiration prevention systems 원문보기

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