Diagnosis of the operability of fuel vapour intermediate stores
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0990360
(2008-11-28)
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등록번호 |
US-8529659
(2013-09-10)
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우선권정보 |
DE-10 2008 001 447 (2008-04-29) |
국제출원번호 |
PCT/EP2008/066402
(2008-11-28)
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§371/§102 date |
20110119
(20110119)
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국제공개번호 |
WO2009/132718
(2009-11-05)
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발명자
/ 주소 |
- Streib, Martin
- Pape, Andreas
- Baumann, Andreas
- Haeming, Werner
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
3 인용 특허 :
10 |
초록
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A method is provided for diagnosing the operability of fuel vapor intermediate stores (4), in particular of activated carbon filters, in tank-venting systems with at least one tank (3) and at least one fuel vapor intermediate store (4). In this case an actual change degree of filling of the fuel vap
A method is provided for diagnosing the operability of fuel vapor intermediate stores (4), in particular of activated carbon filters, in tank-venting systems with at least one tank (3) and at least one fuel vapor intermediate store (4). In this case an actual change degree of filling of the fuel vapor intermediate store (4) is determined as a consequence of absorption or desorption processes of gaseous hydrocarbons in the fuel vapor intermediate store (4). The actual change in degree of filling is compared with a desired change in degree of filling and, from the comparison, a conclusion about the operability of the fuel vapor intermediate store (4) is drawn.
대표청구항
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1. A system for diagnosing the operability of a fuel vapor intermediate store, the system comprising: the fuel vapor intermediate store movably connected to an apparatus;a sensor arranged to measure a degree of movement of the fuel vapor intermediate store; anda controller in electrical communicatio
1. A system for diagnosing the operability of a fuel vapor intermediate store, the system comprising: the fuel vapor intermediate store movably connected to an apparatus;a sensor arranged to measure a degree of movement of the fuel vapor intermediate store; anda controller in electrical communication with the sensor, the controller operative to: receive an input from the sensor, the input indicating the degree of movement of the fuel intermediate store, anddetermine operability of the fuel vapor intermediate store based on the input. 2. The system of claim 1, wherein the sensor arranged to measure the degree of movement of the fuel vapor intermediate store comprises the sensor being operative to determine an oscillation frequency of the fuel vapor intermediate store, andwherein the controller operative to determine the operability of the fuel vapor intermediate store comprises the controller operative to: determine a weight of the fuel vapor intermediate store based on the oscillation frequency, anddetermine the operability of the fuel vapor intermediate store based on the weight of the fuel vapor intermediate store. 3. The system of claim 2, wherein the controller operative to determine the operability of the fuel vapor intermediate store based on the weight of the fuel vapor intermediate store comprises the controller operative to compare the weight of the fuel vapor intermediate store to a reference value. 4. The system of claim 1, wherein the sensor arranged to measure the degree of movement of the fuel vapor intermediate store comprises the sensor being operative to determine an oscillation frequency of the fuel vapor intermediate store, andwherein the controller operative to determine the operability of the fuel vapor intermediate store comprises the controller operative to determine the operability of the fuel vapor intermediate store based on a change in the oscillation frequency. 5. The system of claim 4, wherein a decrease in the oscillation frequency corresponds to a decrease in the operability of the fuel vapor intermediate store. 6. The system of claim 1, wherein the sensor arranged to measure the degree of movement of the fuel vapor intermediate store comprises the sensor being operative to measure a position of the fuel vapor intermediate store. 7. The system of claim 6, wherein the controller operative to determine the operability of the fuel vapor intermediate store comprises the controller operative to determine the operability of the fuel vapor intermediate store based on the position of the fuel vapor intermediate store. 8. The system of claim 6, wherein the controller operative to determine the operability of the fuel vapor intermediate store comprises the controller operative to: determine a weight of the fuel vapor intermediate store based on the position, anddetermine the operability of the fuel vapor intermediate store based on the weight of the fuel vapor intermediate store. 9. The system of claim 6, wherein the controller operative to determine the weight of the fuel vapor intermediate store based on the position comprises the controller operative to correct the weight based on a tilt angle of the apparatus. 10. The system of claim 1, wherein the fuel vapor intermediate store movably connected to the apparatus comprises the fuel intermediate store connect to the apparatus via at least one spring or at least one rubber hose. 11. A method for diagnosing the operability of a fuel vapor intermediate store in a fuel tank venting system, the method comprising: moveably connecting the fuel vapor intermediate store to an apparatus;arranging a sensor to detect movement of the fuel vapor intermediate store;receiving, at a controller, an input from the sensor, the input indicating a degree of movement of the fuel vapor intermediate store;determining the operability of the fuel vapor intermediate store base on the degree of movement of the fuel vapor intermediate store; andbeginning a desorption process,wherein determining the operability of the fuel vapor intermediate store is performed at operating parameters that characterize a high filling degree of the fuel vapor intermediate store before beginning the desorption process. 12. The method of claim 11, wherein receiving the input indicating the degree of movement comprises receiving the input indicating an oscillation frequency of the fuel vapor intermediate store. 13. The method of claim 12, wherein determining the operability of the fuel vapor intermediate store based on the degree of movement comprises: determining a weight of the fuel vapor intermediate store based on the oscillation frequency, anddetermining the operability of the fuel vapor intermediate store based on the weight of the fuel vapor intermediate store. 14. The method of claim 12, wherein determining the operability of the fuel vapor intermediate store based on the weight of the fuel vapor intermediate store comprises comparing the weight of the fuel vapor intermediate store to a reference value. 15. The method of claim 12, wherein determining the operability of the fuel vapor intermediate store base on the degree of movement comprises determining the operability of the fuel vapor intermediate store based on a change in the oscillation frequency. 16. The method of claim 15, wherein a decrease in the oscillation frequency corresponds to a decrease in the operability of the fuel vapor intermediate store. 17. The method of claim 11, wherein the sensor arranged to measure the degree of movement of the fuel vapor intermediate store comprises the sensor being operative to measure a position of the fuel vapor intermediate store. 18. The method of claim 17, wherein determining the operability of the fuel vapor intermediate store comprises determining the operability of the fuel vapor intermediate store based on the position of the fuel vapor intermediate store. 19. The method of claim 18, wherein determining the operability of the fuel vapor intermediate store comprises: determining a weight of the fuel vapor intermediate store based on the position; anddetermining the operability of the fuel vapor intermediate store based on the weight of the fuel vapor intermediate store. 20. The method of claim 18, wherein determining the weight of the fuel vapor intermediate store based on the position comprises the controller operative to correct the weight based on a tilt angle of the apparatus.
이 특허에 인용된 특허 (10)
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Fujimoto, Takeshi, Device for detecting canister deterioration.
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Miyahara,Hideki; Ito,Tokiji; Nagasaki,Kenji, Failure diagnostic apparatus for fuel vapor purge system and fuel vapor purge apparatus and combustion engine having failure diagnostic apparatus.
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Saito, Kenji; Nagashima, Satoshi; Ando, Yoichiro; Kanao, Hidetsugu, Failure diagnostic system of evaporated fuel processing system.
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Yano Hirofumi (Yokohama JPX) Yokoi Seiji (Tokyo JPX), Fuel tank vapor control system with means for warning of malfunction of canister.
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Hyodo, Yoshihiko; Yoshioka, Mamoru; Kawano, Takanobu; Itakura, Hideaki; Takeyama, Masaki; Kato, Naoya, Fuel vapor handling apparatus and diagnostic apparatus thereof.
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Veinotte,Andre, Method for determining vapor canister loading using temperature.
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Nakano, Masaru, Purge gas concentration estimation apparatus.
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Aramaki Takashi (Kanagawa JPX), Self-diagnosing fuel-purging system used for fuel processing system.
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Hara Takeshi,JPX ; Wakashiro Teruo,JPX ; Kimura Osamu,JPX ; Mihara Hiroaki,JPX ; Kitamoto Masakazu,JPX, System for measuring adsorbing ability of canister.
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Freeland Mark, Vapor recovery control system for an internal combustion engine.
이 특허를 인용한 특허 (3)
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Arras, Emmanuel, Filter arrangement of a vehicle.
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Menke, Andreas; Burger, Arne; Heberle, Matthias, Method for determining a buffer effect of an activated carbon filter.
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Harms, Daniel; Treudt, Volker, Method for determining the retention capacity of fuel vapor filters.
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