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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Leak detection for a vapor handling system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F02M-033/02   
미국특허분류(USC) 123/520
출원번호 US-0492400 (2000-01-27)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Grove
인용정보 피인용 횟수 : 47  인용 특허 : 7
초록
▼

The engine or powertrain control module of a vehicle remains electrically powered after the engine is stopped and is used to assess whether there is a leak in the evaporative emissions control system. Fuel tank temperature and pressure data, as well as fuel level data, is analyzed over a brief period of time by module and, if ambient conditions are suitable, the vent on the fuel adsorption canister is closed by signal from the module. The system is thus sealed and the module then analyzes the system pressure changes over a second brief period as the fuel...

대표
청구항
▼

[ What is claimed is:] [1.]1. A method of detecting a leak in a fuel vapor emission control system of an internal combustion engine driven vehicle, said fuel vapor system comprising a fuel tank including a fuel vapor temperature sensor and a tank pressure sensor; a vapor vent line leading from said tank to a fuel vapor adsorption canister, said canister comprising a vapor vent/air inlet line including a vent valve and a vapor purge line including a purge valve, said vent and purge valves being operated under the control of an emission control system comp...

이 특허에 인용된 특허 (7)

  1. Cook John E.,CAX ; Perry Paul D.,CAX. Automotive evaporative leak detection system and method. USP2000076089081.
  2. Giacomazzi Roy A. (Rochester Hills MI) Rich Gregory E. (Richmond MI) Przeklas Chester W. (Mt. Clements MI) Turner Kenneth W. (Webster NY). Evaporative emission control system with vent valve. USP1995085437257.
  3. Gross Rainer P. (Union Lake MI). Evaporative emission system diagnostic. USP1994015275144.
  4. Yoneyama Shuichi (Kanagawa JPX). Evaporative purge monitoring method and system. USP1996025494021.
  5. Dawson Gary D.. Evaporative system leak detection for an evaporative emission control system. USP2000066073487.
  6. Dawson Gary D. (Rochester MI) Blomquist William B. (Clarkston MI) Cook John (Chatham CAX) Busato Murray (Chatham CAX). Leak detection assembly. USP1997065635630.
  7. Reddy Sam R. (Bloomfield MI). System and method for detecting leaks in a vapor handling system. USP1993115263462.

이 특허를 인용한 특허 피인용횟수: 47

  1. Kaiser, Jeffrey; Lehmen, Allen Joseph; Gernant, Timothy. Diagnostic method for vehicle evaporative emissions. USP2003076594562.
  2. Jentz, Robert Roy; Dudar, Aed M.. Engine cooling system motor driven vacuum pump. USP2016049309840.
  3. Wong, Kevin C.; Western, William. Engine off natural vacuum leakage check for onboard diagnostics. USP2003046550316.
  4. Reddy,Sam R.; Mc Carthy,Timothy E.. Evaporative emission control in battery powered vehicle with gasoline engine powered generator. USP2008117448367.
  5. Hirano, Noboru; Koyama, Nobuhiko. Evaporative emission control system and method for detecting leaks therein. USP2003126666072.
  6. Bolt, Louis Scott; Dew, Michael. Evaporative emission system test apparatus and method of testing an evaporative emission system. USP2011027878046.
  7. Dekar, Joseph; Sager, Roger C; Daley, James J; Blomquist, William B; Wuttke, Jeffrey P; Wakeman, Russell J; Fleischman, Adam; Yannone, Jr., Ronald A; Del Rio, Luis; Lott, Mark L; Baker, Edward; Vincent, Michael T; Yang, Wei-Jun; Tsahalou, Aikaterini. Evaporative emissions control system including a purge pump and hydrocarbon sensor. USP2018019879623.
  8. Gearhart, Raymond D.; Bolt, Louis Scott; Bhargava, Sumit. Evaporative emissions leak tester and leak test method. USP2016109476792.
  9. Dudar, Aed M.. Evaporative emissions system and method for a stop/start vehicle. USP2017109797348.
  10. Yamaguchi,Takashi; Oki,Hideyuki; Kubo,Satoru; Shikama,Mahito; Yamagami,Tomohiro; Yoshiki,Koichi. Failure diagnosis apparatus for evaporative fuel processing system. USP2006057040302.
  11. De Ronne, Michael P.; Gonsiorowski, Marc J.; Labus, Gregory E.; Lehner, Chad W.. Fuel filling detection. USP2005086925855.
  12. Reddy, Sam R.. Fuel storage system for a vehicle. USP2015129222446.
  13. Jentz, Robert Roy; Peters, Mark W.; Casedy, Michael; Dudar, Aed M. Fuel system diagnostics. USP2016019243591.
  14. Dudar, Aed M.; Yang, Dennis Seung-Man; Ognjanovski, Jr., Rob. Fuel system leak check based on fuel reid vapor pressure. USP2016109458801.
  15. Amano, Noriyasu; Itakura, Hideaki; Takeyama, Masaki; Kato, Naoya; Koyama, Nobuhiko. Fuel vapor control apparatus. USP2004026689196.
  16. Morinaga, Syujiro; Maegawa, Yoshinori; Wakahara, Keiji; Miwa, Makoto. Fuel vapor control system with leak check. USP201009RE41660.
  17. Morinaga, Syujiro; Maegawa, Yoshinori; Wakahara, Keiji; Miwa, Makoto. Fuel vapor control system with leak check. USP2004126832509.
  18. Kumagai, Masato; Yamada, Hiroshi; Mori, Kazuyoshi. Fuel-injection system. USP2004106805106.
  19. Pursifull, Ross Dykstra. Gaseous fuel system and method for an engine. USP20181210161351.
  20. Dekar, Joseph; Sager, Roger C; Daley, James J; Blomquist, William B; Wuttke, Jeffrey P; Wakeman, Russell J; Fleischman, Adam; Yannone, Jr., Ronald A; Del Rio, Luis; Lott, Mark L; Baker, Edward; Vincent, Michael T; Yang, Wei-Jun; Tsahalou, Aikaterini. Hydrocarbon vapor start techniques using a purge pump and hydrocarbon sensor. USP20190410247116.
  21. Dudar, Aed M.; Yang, Dennis Seung-Man. Leak detection for canister purge valve. USP2016029255553.
  22. Fabre, Laurent. Leak detection in a closed vapor handling system using pressure, temperature and time. USP2003046539927.
  23. Perry, Paul D.. Leak detection method and system for a high pressure automotive fuel tank. USP2014048689613.
  24. Mc Lain,Kurt D.; Pitsch,Michael J.. Leak detection system for a vehicle fuel tank. USP2006117140235.
  25. Tsuyuki, Takeshi; Ishii, Hiroya; Watanabe, Kazuhisa. Leak diagnostic apparatus for a vaporized fuel processing system. USP2010037685867.
  26. Hosoya,Hajime. Leakage diagnosis apparatus for fuel vapor purge system and method thereof. USP2007057219535.
  27. Watanabe, Satoru; Hosoya, Hajime. Leakage diagnosis apparatus for fuel vapor purge system and method thereof. USP2005116966214.
  28. Grunwald, Oliver. Method and device for testing the tightness of a fuel tank of an internal combustion engine. USP2013028365706.
  29. Criel, Bjorn; Chaussinand, Antoine; Hill, David; McCleary, Scott; Dedeurwaerder, Jurgen; Baja, Mihai. Method and system for controlling a filling operation of a vehicular liquid storage system. USP2017129834430.
  30. DeBastos, Timothy; Kacewicz, John Michael; Bohr, Scott; Pearce, Russell Randall; Kragh, Christopher; Sullivan, Patrick; Euliss, William; Kluzner, Michael Igor. Method and system for fuel vapor control. USP2012068200411.
  31. DeBastos, Timothy; Kacewicz, John Michael; Bohr, Scott; Pearce, Russell Randall; Kragh, Christopher; Sullivan, Patrick; Euliss, William; Kluzner, Michael Igor. Method and system for fuel vapor control. USP2011098019525.
  32. DeBastos, Timothy; Pearce, Russell Randall; Bohr, Scott; Sullivan, Patrick; Kragh, Christopher; Kluzner, Michael Igor; Jentz, Robert Roy; Euliss, William; Dudar, Aed; Kerns, James Michael; Ferguson, Russ William; Gabor, Daniel. Method and system for fuel vapor control. USP2012078215291.
  33. DeBastos, Timothy; Pearce, Russell Randall; Bohr, Scott; Sullivan, Patrick; Kragh, Christopher; Kluzner, Michael Igor; Jentz, Robert Roy; Euliss, William; Dudar, Aed; Kerns, James Michael; Ferguson, Russ William; Gabor, Daniel. Method and system for fuel vapor control. USP2011118056540.
  34. Pearce, Russell Randall; Bohr, Scott; Kragh, Christopher; DeBastos, Timothy; Sullivan, Patrick; Kerns, James Michael; Olson, Chad Michael. Method and system for fuel vapor control. USP2013058447495.
  35. Streib, Martin. Method for detecting leaks in a tank system. USP2014048706343.
  36. Veinotte,Andre. Method for determining vapor canister loading using temperature. USP2007067233845.
  37. Dudar, Aed M.. Methods and system for an evaporative emissions system leak test using an external pressure source. USP20180710036681.
  38. Jackson, Robert W.; Van Gilder, John F.. Purge valve leak diagnostic robustness improvements for small turbocharged engines. USP20181210156209.
  39. 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. USP2011118056397.
  40. 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. USP2007017168297.
  41. 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. USP2008087409852.
  42. Dudar, Aed M.; Makki, Imad Hassan; Tseng, Fling Finn; Jentz, Robert Roy. System and methods for engine-off natural vacuum tests. USP2017059664126.
  43. Dudar, Aed M.. Systems and methods for determining canister purge valve degradation. USP2016089416755.
  44. Dudar, Aed M.; Mullins, John. Systems and methods for engine-off natural vacuum leak testing with fuel enablement compensation. USP20190110190934.
  45. Lucka, Kevin; Yang, Dennis Seung-Man; Dudar, Aed M.; Aghili, Mohammad R.. Systems and methods for vehicle evaporative emissions system diagnostics. USP20181010100782.
  46. Sager, Roger C; Blomquist, William B; Daley, James; Tsahalou, Aikaterini; Yannone, Jr., Ronald A; Del Rio, Luis; Lott, Mark L; Dekar, Joseph. Techniques for monitoring purge flow and detecting vapor canister leaks in an evaporative emissions system. USP2018059970391.
  47. McLain,Kurt D.; Kropinski,Michael A.. Testing a fuel tank vacuum sensor. USP2008057373799.

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