EP1688610A2 - Dispositif d'écoulement pour un système de commande des émissions de vapeur de carburant - Google Patents

Dispositif d'écoulement pour un système de commande des émissions de vapeur de carburant Download PDF

Info

Publication number
EP1688610A2
EP1688610A2 EP06270006A EP06270006A EP1688610A2 EP 1688610 A2 EP1688610 A2 EP 1688610A2 EP 06270006 A EP06270006 A EP 06270006A EP 06270006 A EP06270006 A EP 06270006A EP 1688610 A2 EP1688610 A2 EP 1688610A2
Authority
EP
European Patent Office
Prior art keywords
fluid flow
flow device
control system
emission control
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06270006A
Other languages
German (de)
English (en)
Other versions
EP1688610A3 (fr
Inventor
Jan Jasinski
Andrzej Kalina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1688610A2 publication Critical patent/EP1688610A2/fr
Publication of EP1688610A3 publication Critical patent/EP1688610A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0854—Details of the absorption canister

Definitions

  • This invention relates to a fluid flow device for use in a fuel evaporative emission control system.
  • the present invention provides a fluid flow device for use in a fuel evaporative emission control system, the device comprising a fluid flow passage having an inlet and an outlet, and fluid flow alteration means within the fluid flow passage effective to give relatively unobstructed flow in one direction and relatively obstructed flow in the opposite direction, whereby in use flow in said opposite direction aids purging of an adsorption canister.
  • a vehicle fuel system includes a fuel tank 10 containing fuel 11 and having a fill pipe 12 closed by a cap 14 which forms a seal with the fill pipe 12. Fuel is discharged from the tank 10 via a fuel line 16. The fuel tank is vented to atmosphere by a connection line 18 which leads to a canister 20 containing granules / pellets of activated carbon.
  • the canister 20 has a first chamber 20A and second chamber 20B.
  • a purge line 4 having a valve 3 is connected to first chamber 20A and a vent line 5 having a fluid flow device 22 is connected to second chamber 20B. As shown in Fig.
  • valve 3 when the vehicle engine is inactive the valve 3 is closed and any increase in pressure caused by fuel evaporation is vented to atmosphere along route 1 which passes via canister chambers 20A, 20B (in which fuel vapours are adsorbed onto the activated carbon) and fluid flow device 22.
  • valve 3 When the engine is activated, valve 3 is open and ambient air is drawn through the canister chambers 20A and 20B via the fluid flow device 22, and this air flow "purges" the activated carbon by de-adsorbing the fuel there through. The outflow is purged to the engine via line 4.
  • the invention improves upon known types by providing the fluid flow device 22 in the line between the canister 20 and the vent.
  • the fluid flow device 22 is based on the concept of a device which provides a relatively low resistance to fluid flow during venting, while providing a relatively high resistance during purging so as to give more intimate contact between the purge air and the carbon particles.
  • Figure 2 shows one form of fluid flow device 22. This consists of a housing 24 forming a flow passage 26 which contains, in series, a converger 28 and a diffuser 30.
  • Figure 2a When flow is in one direction (Figure 2a), the pressure drop through the device is small and there is little creation of vortexes and low turbulence.
  • Figure 2b When flow is in the other direction ( Figure 2b), the pressure drop is much higher, and substantial vortexes and turbulence are present.
  • FIG 3 shows a practical realisation of the scheme of Figure 2, like parts being denoted by like references.
  • the housing 24, the converger 28 and the diffuser 30 can each be formed as a plastics moulding, suitably of polypropylene.
  • the housing 24 will of course be in two parts before assembly.
  • the device shown in Figure 3 is suitable for inclusion as a separate item in a vent line.
  • the device of the invention could be integrated with the carbon canister itself to reduce the part count and speed installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP06270006A 2005-02-03 2006-01-18 Dispositif d'écoulement pour un système de commande des émissions de vapeur de carburant Withdrawn EP1688610A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0502233A GB0502233D0 (en) 2005-02-03 2005-02-03 Fuel vapour storage canister

Publications (2)

Publication Number Publication Date
EP1688610A2 true EP1688610A2 (fr) 2006-08-09
EP1688610A3 EP1688610A3 (fr) 2009-07-08

Family

ID=34307922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06270006A Withdrawn EP1688610A3 (fr) 2005-02-03 2006-01-18 Dispositif d'écoulement pour un système de commande des émissions de vapeur de carburant

Country Status (2)

Country Link
EP (1) EP1688610A3 (fr)
GB (1) GB0502233D0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9845745B2 (en) 2015-07-08 2017-12-19 Ford Global Technologies, Llc EVAP system with valve to improve canister purging

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4338106A (en) 1979-11-09 1982-07-06 Nippon Soken, Inc. Canister for fuel evaporative emission control system
US4403587A (en) 1981-03-23 1983-09-13 Nippon Soken, Inc. Fuel evaporative emission control apparatus for vehicles
US4507132A (en) 1983-08-12 1985-03-26 Aisan Industry Co., Ltd. Fuel evaporation preventing device
EP0756079A1 (fr) 1995-07-26 1997-01-29 Toyota Jidosha Kabushiki Kaisha Canister

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750923A (en) * 1985-11-08 1988-06-14 Aisan Kogyo Kabushiki Kaisha Canister for reducing fuel vapor loss
DE4140258C1 (fr) * 1991-12-06 1993-04-15 Robert Bosch Gmbh, 7000 Stuttgart, De
JP4047467B2 (ja) * 1998-02-17 2008-02-13 東洋▲ろ▼機製造株式会社 キャニスタ用フィルタ装置
DE60222549T2 (de) * 2001-06-14 2008-06-19 Siemens Vdo Automotive Inc., Chatham Kraftstoffsystem mit einrichtung und verfahren zur regelung des kraftstoffdampfdruckes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4338106A (en) 1979-11-09 1982-07-06 Nippon Soken, Inc. Canister for fuel evaporative emission control system
US4403587A (en) 1981-03-23 1983-09-13 Nippon Soken, Inc. Fuel evaporative emission control apparatus for vehicles
US4507132A (en) 1983-08-12 1985-03-26 Aisan Industry Co., Ltd. Fuel evaporation preventing device
EP0756079A1 (fr) 1995-07-26 1997-01-29 Toyota Jidosha Kabushiki Kaisha Canister

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9845745B2 (en) 2015-07-08 2017-12-19 Ford Global Technologies, Llc EVAP system with valve to improve canister purging

Also Published As

Publication number Publication date
GB0502233D0 (en) 2005-03-09
EP1688610A3 (fr) 2009-07-08

Similar Documents

Publication Publication Date Title
US5460136A (en) Evaporative fuel-adsorbing device and evaporative emission control system including same
US7249595B2 (en) Vapor vent valve with pressure relief function integrated to carbon canister
EP1600317B1 (fr) Système de récupération des vapeurs pendant le remplissage
US6895943B1 (en) Fuel vent assembly with floatless rollover protection
US5906189A (en) Evaporative fuel controller for internal combustion engine
US20100126477A1 (en) Evaporative emissions control system
WO2006067586A3 (fr) Commande de l'emission de vapeur dans un systeme a petit reservoir de carburant de moteur
JPS6040773A (ja) 燃料蒸発防止装置
JPH11247729A (ja) 燃料蒸気減少型燃料システム
JPH1172054A (ja) 燃料蒸気排出防止装置
JP2006266267A (ja) 小型エンジンの燃料蒸発ガスエミッション制御システム及び方法
JP3274084B2 (ja) キャニスタ
US20080223343A1 (en) Fuel vapor control apparatus
CA2660047C (fr) Systeme de gestion de pression de vapeur a caisson de piegeage des vapeurs
JPH08189427A (ja) キャニスタ
EP1688610A2 (fr) Dispositif d'écoulement pour un système de commande des émissions de vapeur de carburant
KR100265313B1 (ko) 내연기관 연료탱크용 브리더
US5503659A (en) Ventguard
JP5193352B2 (ja) 自動車用燃料タンク
WO2016147717A1 (fr) Cartouche
EP2071172A1 (fr) Récipient doté d'un filtre surmoulé
JPH11193755A (ja) 内燃機関の蒸発燃料制御装置
JP3452103B2 (ja) 蒸発燃料処理装置
HU218772B (hu) Aktívszén szűrő gépjárművekhez
CN2229529Y (zh) 活性炭吸附真空控制型燃油蒸发污染物控制装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100109