[특허]Leak diagnosis system for evaporative emission control system

Leak diagnosis system for evaporative emission control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-033/02 G01M-003/26
출원번호	US-0153516 (1993-11-17)
우선권정보	JP-0315087 (1992-11-25); JP-0335859 (1992-12-16)
발명자 / 주소	Kawamura Katsuhiko (Yokohama JPX) Matsuno Osamu (Ebina JPX) Kishimoto Yoichi (Chigasaki JPX)
출원인 / 주소	Nissan Motor Co., Ltd. (Yokohama JPX 03)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A leak diagnosis system which diagnoses a leak condition of an evaporative emission control system for an internal combustion engine. The leak diagnosis system detects a changing speed of a pressure in the evaporative emission control system for plural times during when the evaporative emission control system is put into a negative pressure condition by the negative pressure of the engine and is then closed by a purge-cut valve. The leak diagnosis system diagnoses a leak condition of the evaporative emission control system according to the detected plural pressure changing speeds while taking a fuel condition in the evaporative emission control system into consideration on the basis of the detected plural pressure changing speeds. Accordingly, the leak condition in the evaporative emission control system is accurately diagnosed without being effected by the fuel condition.

대표청구항 ▼

A leak diagnosis system for an evaporative emission control system of an internal combustion engine, said leak diagnosis system comprising: a pressure detecting means detecting a pressure in the evaporative emission control system which is connected to an intake system of the internal combustion engine; a leak diagnosis means comprising a pressure drop speed detecting means which obtains a pressure drop speed by detecting the pressure in the evaporative emission control system upon communicating the evaporative emission control system with the intake side of the internal combustion engine and a pressure buildup speed detecting means which obtains a pressure buildup speed by detecting the pressure in the evaporative emission control system upon closing the communication between the evaporative emission control system and the internal combustion engine, said leak diagnosis means diagnosing the leak condition of the evaporative emission control system according to the detected pressure drop speed and the detected pressure buildup speed.

이 특허를 인용한 특허 (36)

Miwa Makoto,JPX ; Isomura Shigenori,JPX ; Nishio Teruo,JPX, Abnormality detecting apparatus for use in fuel-transpiration preventing systems.
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Machida Kenichi (Isesaki JPX), Air fuel ratio control system for engine with fuel vapor recovery system.
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Okuma Shigeo,JPX, Apparatus and method for diagnosing leaks of fuel vapor treatment unit.
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Remboski Donald J. (Dearborn MI) Plee Steven L. (Brighton MI) Woznick Mark B. (Novi MI) Foley John F. (Novi MI), Apparatus and method of detecting a leak in an evaporative emissions system.
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Oki, Hideyuki; Gosyo, Eisaku, Apparatus for detecting leakage in an evaporated fuel processing system.
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Cook John E.,CAX ; Perry Paul D.,CAX ; Weldon Craig A.,CAX, Automotive evaporative emission leak detection system.
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Otsuka Takayuki (Susono JPX), Device for detecting leakage of fuel vapor.
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Hanai, Shuichi; Adachi, Shin; Itoh, Tokiji; Kohara, Yuichi; Iden, Noriyuki, Diagnosis apparatus for fuel vapor purge system.
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Kawamura Katsuhiko,JPX ; Kawano Akihiro,JPX, Diagnosis for evaporative emission control system.
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Schwegler Helmut,DEX ; Zimmermann Manfred,DEX, Diagnostic module for testing the tightness of a container.
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Mieczkowski Daniel ; Hasenberg Mark J. ; Becker Thomas P. ; Crass Matthew M. ; Braun Robert D. ; Gisske Edward T. ; Caldwell Donald J., Evaporative emission tester.
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Mieczkowski Daniel ; Hasenberg Mark J. ; Becker Thomas P. ; Crass Matthew M. ; Braun Robert D. ; Gisske Edward T. ; Caldwell Donald J., Evaporative emission tester.
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Nagano Susumu,JPX ; Oakes Martin, Evaporative fuel leak diagnosing apparatus.
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Shingo Shigihama JP; Katsuhiko Sakamoto JP; Yuji Ota JP; Tetsushi Hosokai JP, Failure diagnosis system for evaporation control system.
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Shinohara Susumu (Toyota JPX) Teraoka Katsuhiko (Toyota JPX), Fault diagnostic apparatus for evaporated fuel purging system.
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Corkill William John,GBX, Fuel system leak detection.
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Kobayashi, Shigemi; Kujirai, Kazuhiro; Misawa, Masahiro; Amano, Takafumi; Aoyama, Yousuke, Fuel temperature estimation device.
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Peters, Mark William; Shimon, Richard; Jentz, Robert Roy; Bohr, Scott; Pursifull, Ross Dykstra, Fuel vapor purging diagnostics.
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Pursifull, Ross Dykstra; Lippa, Allan J.; Russell, John D.; Surnilla, Gopichandra; Ulrey, Joseph Norman, Fuel vapor purging diagnostics.
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Pursifull, Ross Dykstra; Lippa, Allan J.; Russell, John D.; Surnilla, Gopichandra; Ulrey, Joseph Norman, Fuel vapor purging diagnostics.
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Kawano, Akihiro, Fuel vapor treatment system with failure diagnosis apparatus.
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Pursifull, Ross Dykstra, Increasing crankcase ventilation flow rate via active flow control.
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Pearce, Russell Randall; Bohr, Scott A.; Dudar, Aed M.; Yang, Dennis Seung-Man, Leak detection based on fuel level.
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Dudar, Aed M.; Yang, Dennis Seung-Man, Leak detection for canister purge valve.
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Simmons, Walt, Method and apparatus for detecting a leak in a fuel delivery system.
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Mellone, Joseph A.; Boucher, Randall S., Method and apparatus for monitoring for a restriction in a stage II fuel vapor recovery system.
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Mellone, Joseph A.; Boucher, Randall S., Method and apparatus for monitoring for a restriction in a stage II fuel vapor recovery system.
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Mellone, Joseph; Boucher, Randall, Method and apparatus for monitoring for a restriction in a stage II fuel vapor recovery system.
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Mellone, Joseph A.; Boucher, Randall S., Method and apparatus for monitoring for leaks in a stage II fuel vapor recovery system.
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Huls Thomas Allan, Method and system for estimating fuel vapor pressure.
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Pursifull, Ross Dykstra; Crisp, Nicholas Dashwood, Method for crankcase ventilation in a boosted engine.
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Pursifull, Ross Dykstra; Luehrsen, Eric, Method for reducing air flow in an engine at idle.
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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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Martin, Douglas Raymond; Sipes, Ann Irene; Jentz, Robert Roy; Dudar, Aed Mohammad; Peters, Mark W.; Hu, Guopeng, Vapor purge system integrity diagnosis for a hybrid vehicle.
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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

Leak diagnosis system for evaporative emission control system 원문보기

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Leak diagnosis system for evaporative emission control system 원문보기

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이 특허를 인용한 특허 (36)

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