EP0865571B1 - Adsorptions-filter einer kraftstofftank-entlüftungsanlage eines verbrennungsmotors und verfahren zum betreiben dieser anlage - Google Patents

Adsorptions-filter einer kraftstofftank-entlüftungsanlage eines verbrennungsmotors und verfahren zum betreiben dieser anlage Download PDF

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Publication number
EP0865571B1
EP0865571B1 EP97926982A EP97926982A EP0865571B1 EP 0865571 B1 EP0865571 B1 EP 0865571B1 EP 97926982 A EP97926982 A EP 97926982A EP 97926982 A EP97926982 A EP 97926982A EP 0865571 B1 EP0865571 B1 EP 0865571B1
Authority
EP
European Patent Office
Prior art keywords
housing
adsorption filter
adsorption
filter
fuel tank
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.)
Expired - Lifetime
Application number
EP97926982A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0865571A1 (de
Inventor
Matthias Bohl
Harald Haufe
Klaus Schweikert
Kay Brodesser
Uwe Mohr
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.)
Knecht Filterwerk GmbH
Original Assignee
Knecht Filterwerk GmbH
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
Priority claimed from DE1996123740 external-priority patent/DE19623740A1/de
Application filed by Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Publication of EP0865571A1 publication Critical patent/EP0865571A1/de
Application granted granted Critical
Publication of EP0865571B1 publication Critical patent/EP0865571B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M25/0809—Judging failure of purge control system
    • F02M25/0818—Judging failure of purge control system having means for pressurising the evaporative emission space
    • 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

  • the invention relates to an adsorption filter of a fuel tank ventilation system an internal combustion engine the preamble of claim 1 and a method to operate this system.
  • the filter as such is off, for example DE 41 24 465 A1 known.
  • the invention is concerned with of building such a filter with the problem, the individual Aggregates of the fuel tank ventilation system as compact, efficient to manufacture and easy to attach to the tank as well as the intake air line of the internal combustion engine To design module part.
  • the teaching of claim 6 ensures that by in the intake line of the internal combustion engine, through which Adsorption filter-led air the engine combustion process not negatively affected.
  • an adsorption filter housing 1 In an adsorption filter housing 1 are through a partition 2 a larger and a smaller chamber for receiving of activated carbon as an adsorbent for fuel vapors a tank, not shown, of an internal combustion engine educated.
  • the smaller chamber is 3 and the larger one Chamber labeled 4.
  • the two chambers 3 and 4 are vertically above and below with permeable covers 5 and 6 closed, being on the covered by the activated carbon opposite sides of the covers 5 and 6 each for training a flow channel a distance from one adjacent wall of the filter housing 1 is given. Perpendicular below is this flow space between the smaller and the larger chamber 3 or 4 separated by the partition 2.
  • the flow channel lying vertically above the upper cover 6 is from an intermediate wall 7 of the filter housing 1 educated.
  • the partition 7 is together with an area the outer wall of the filter housing 1 also an additional one separate flow channel 8 is formed.
  • connection piece 9 For the connection of a tank ventilation line is in the Larger chamber 4 leading connecting piece 9 is provided. Via the mouth of this connection piece leading into the activated carbon 9, a sieve basket 10 is put over.
  • Another one Connection piece 11 is the larger chamber 4 with a Engine operation under vacuum area of the intake air line of the internal combustion engine connectable. The last one said connection can be interrupted by a valve.
  • a connecting piece 12 leading to the atmosphere is located connected to one with the adsorption filter housing 1 Air filter housing 13. Sits in the air filter housing 13 an annular air filter 14, the radially outer one Area with the connecting line 12 to the atmosphere and its radially inner area with the flow channel 8 is connected.
  • a housing is directly connected to the filter housing 1 a compressed air source 15, this compressed air source specifically is an air pump.
  • the connection of the housing of the Compressed air source 15 is in the interior of the filter housing 1 leading connecting lines 16 and 17 given. Within these connecting lines are each the housing of the Compressed air source 15 from the filter housing 1 vibration-decoupling Intermediate elements 18.
  • the connecting line 17 leads from the pressure side of the compressed air source 15 out into a flow space 19 which is connected to that of the larger one Chamber 4 downstream end of the smaller chamber 3 adjacent.
  • a shutoff valve 20 provided, in particular at the transition from Housing of the compressed air source 15 is arranged to this line can be.
  • the compressed air source is located via the connecting line 16 15 on the suction side with the flow channel 8 in connection.
  • Fuel vapor flowing out of a tank, not shown passes through the connecting line 9 in the with activated carbon filled larger chamber 4 of the adsorption filter housing 1.
  • the chamber 4 leaves the one pre-treated there Fuel vapor in the direction of the smaller one too Activated carbon filled chamber 3, which he in the flow space 19 flows through.
  • From there the fuel passes freed tank ventilation flow via the supply and discharge lines 17 and 16 the compressed air source 15 to through the Flow space 8 through the air filter 14 through the Connection piece 12 to get into the atmosphere.
  • the compressed air source 15 is for this flow guidance of the tank ventilation flow permeable design.
  • the tank ventilation system can carry out leakage safety checks overall by the compressed air source 15 below Pressure.
  • the area to be pressurized lies between the connecting piece 11 and the connecting line 17 who did not conduct the test shown valves are closable and includes the the connecting piece 9 connected not shown Fuel tank.
  • the compressed air is directly inside the housing the compressed air source designed as a compressed air pump 15 generated and introduced via line 17 into the system.
  • the compressed air source 15 sucks the one to be compressed Air via the connecting line 16 from the air filter housing 13 on.
  • the exact type of leak test the tank ventilation system is known per se and therefore needs it no further explanation here.
  • a one-way valve 21 with locking action be arranged in the direction of the fuel tank.
  • the air flow that is generated by the Air pump 15 is conveyed through the filter 1, depending on the relevant engine operating data, the Exhaust gas composition and / or the fuel load state of the adsorption material of the filter 1 controlled or regulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Separation Of Gases By Adsorption (AREA)
EP97926982A 1996-06-14 1997-06-06 Adsorptions-filter einer kraftstofftank-entlüftungsanlage eines verbrennungsmotors und verfahren zum betreiben dieser anlage Expired - Lifetime EP0865571B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19623740 1996-06-14
DE1996123740 DE19623740A1 (de) 1996-06-14 1996-06-14 Adsorptions-Filter einer Kraftstoff-Entlüftungsanlage eines Verbrennungsmotors
DE19628153A DE19628153B4 (de) 1996-06-14 1996-07-12 Verfahren zum Betreiben einer Kraftstofftank-Entlüftungsanlage eines Verbrennungsmotors
DE19628153 1996-07-12
PCT/DE1997/001137 WO1997047874A1 (de) 1996-06-14 1997-06-06 Adsorptions-filter einer kraftstofftank-entlüftungsanlage eines verbrennungsmotors und verfahren zum betreiben dieser anlage

Publications (2)

Publication Number Publication Date
EP0865571A1 EP0865571A1 (de) 1998-09-23
EP0865571B1 true EP0865571B1 (de) 1999-12-08

Family

ID=26026571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97926982A Expired - Lifetime EP0865571B1 (de) 1996-06-14 1997-06-06 Adsorptions-filter einer kraftstofftank-entlüftungsanlage eines verbrennungsmotors und verfahren zum betreiben dieser anlage

Country Status (5)

Country Link
US (1) US5983870A (es)
EP (1) EP0865571B1 (es)
DE (2) DE19628153B4 (es)
ES (1) ES2141619T3 (es)
WO (1) WO1997047874A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010019046A1 (de) * 2010-05-03 2011-11-03 Mahle International Gmbh Filterlage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6196202B1 (en) * 1997-07-28 2001-03-06 Siemens Canada Limited Evaporative emission system for low engine intake system vacuums
JP2000161151A (ja) * 1998-11-24 2000-06-13 Mitsubishi Electric Corp 燃料蒸発ガス排出抑止装置
US7562651B2 (en) * 2007-11-19 2009-07-21 Mahle Technology, Inc. Vapor canister having integrated evaporative emission purge actuation monitoring system having fresh air filter
DE102010064239A1 (de) * 2010-12-28 2012-06-28 Robert Bosch Gmbh Entlüftungssystem, insbesondere für einen Kraftstofftank

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2298005A1 (fr) * 1975-01-15 1976-08-13 Peugeot & Renault Procede et dispositif de recyclage au carburateur de vapeurs d'hydrocarbures
DE2547065A1 (de) * 1975-10-21 1977-09-08 Bosch Gmbh Robert Vorrichtung zur regelung der kraftstofftankentlueftung einer brennkraftmaschine
JPS5510081A (en) * 1978-07-10 1980-01-24 Toyota Motor Corp Collecting and purging device of fuel vapor in engine
DE4124465C2 (de) * 1991-07-24 2002-11-14 Bosch Gmbh Robert Tankentlüftungsanlage und Kraftfahrzeug mit einer solchen sowie Verfahren und Vorrichtung zum Prüfen der Funktionsfähigkeit einer solchen
JPH05312113A (ja) * 1992-05-13 1993-11-22 Nippondenso Co Ltd 燃料蒸発ガス拡散防止装置
JP2917712B2 (ja) * 1992-11-02 1999-07-12 トヨタ自動車株式会社 内燃機関
US5411004A (en) * 1993-02-03 1995-05-02 Siemens Automotive Limited Positive pressure canister purge system integrity confirmation
DE4317634A1 (de) * 1993-05-27 1994-12-01 Bosch Gmbh Robert Verfahren und Vorrichtung zum Überprüfen der Dichtheit einer Tankentlüfungsanlage
JP3111396B2 (ja) * 1993-10-04 2000-11-20 本田技研工業株式会社 蒸発燃料排出抑制装置
DE4335126B4 (de) * 1993-10-15 2006-07-06 Robert Bosch Gmbh Vorrichtung zur Dichtheitsprüfung eines Tankentlüftungssystems
JPH07133744A (ja) * 1993-11-09 1995-05-23 Honda Motor Co Ltd 蒸発燃料排出抑止装置
US5560347A (en) * 1994-05-02 1996-10-01 General Motors Corporation Conductive foam vapor sensing
US5408976A (en) * 1994-05-02 1995-04-25 General Motors Corporation Swellable adsorbent diagnostic for fuel vapor handling system
US5499614A (en) * 1994-11-03 1996-03-19 Siemens Electric Limited Means and method for operating evaporative emission system leak detection pump
US5483942A (en) * 1995-02-24 1996-01-16 Siemens Electric Limited Fuel vapor leak detection system
JP3886587B2 (ja) * 1996-03-01 2007-02-28 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 内燃機関付車両のタンク系統の気密試験方法
JP3265985B2 (ja) * 1996-05-17 2002-03-18 トヨタ自動車株式会社 燃料蒸気処理装置
JPH09324715A (ja) * 1996-06-06 1997-12-16 Toyota Motor Corp 内燃機関の燃料供給装置
DE19623740A1 (de) * 1996-06-14 1997-12-18 Knecht Filterwerke Gmbh Adsorptions-Filter einer Kraftstoff-Entlüftungsanlage eines Verbrennungsmotors
US5857446A (en) * 1996-07-01 1999-01-12 Norton; Peter Fuel vapor source
JP3401778B2 (ja) * 1996-08-12 2003-04-28 トヨタ自動車株式会社 エバポパージシステムの故障診断装置
DE19636431B4 (de) * 1996-09-07 2009-05-14 Robert Bosch Gmbh Verfahren und Vorrichtung zur Prüfung der Funktionsfähigkeit einer Tankentlüftungsanlage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010019046A1 (de) * 2010-05-03 2011-11-03 Mahle International Gmbh Filterlage

Also Published As

Publication number Publication date
US5983870A (en) 1999-11-16
DE19628153A1 (de) 1998-03-05
ES2141619T3 (es) 2000-03-16
DE59700822D1 (de) 2000-01-13
WO1997047874A1 (de) 1997-12-18
EP0865571A1 (de) 1998-09-23
DE19628153B4 (de) 2009-04-16

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