[go: up one dir, main page]

WO1999039094A3 - Driver circuit for fuel vapor leak detection system - Google Patents

Driver circuit for fuel vapor leak detection system Download PDF

Info

Publication number
WO1999039094A3
WO1999039094A3 PCT/CA1999/000068 CA9900068W WO9939094A3 WO 1999039094 A3 WO1999039094 A3 WO 1999039094A3 CA 9900068 W CA9900068 W CA 9900068W WO 9939094 A3 WO9939094 A3 WO 9939094A3
Authority
WO
WIPO (PCT)
Prior art keywords
space
pump
driver circuit
detection system
vent
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.)
Ceased
Application number
PCT/CA1999/000068
Other languages
French (fr)
Other versions
WO1999039094A2 (en
Inventor
John E Cook
William J Boucher
Raymond Rasokas
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.)
Siemens Canada Ltd
Original Assignee
Siemens Canada Ltd
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 US09/238,192 external-priority patent/US6301955B1/en
Application filed by Siemens Canada Ltd filed Critical Siemens Canada Ltd
Publication of WO1999039094A2 publication Critical patent/WO1999039094A2/en
Publication of WO1999039094A3 publication Critical patent/WO1999039094A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
    • 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
    • F02M2025/0845—Electromagnetic valves

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)

Abstract

An on-board evaporative emission leak detection system has a module (22) for detecting leakage from an evaporative emission space of a fuel system of an automotive vehicle. Interior space (103) of the module's enclosure (102) is communicated to atmosphere. A pump (50) is disposed within space (103) and has an inlet (56) communicated to the interior space and a flow passage (70, 72) at its outlet (58) to allow the pump to create pressure in the evaporative emission space suitable for performance of a leak test. A vent valve (52) is disposed within space (103) and is selectively operable to vent and not vent the flow passage to space (103). An electromagnet actuator (104) has a single electric coil (116) that operates both the pump and the vent valve. A driver circuit (1000) to the coil provides a first current component for operating the pump and a second current component for operating the vent valve.
PCT/CA1999/000068 1998-01-28 1999-01-28 Driver circuit for fuel vapor leak detection system Ceased WO1999039094A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US7284298P 1998-01-28 1998-01-28
US60/072,842 1998-01-28
US09/238,192 1999-01-27
US09/238,192 US6301955B1 (en) 1999-01-27 1999-01-27 Driver circuit for fuel vapor leak detection system

Publications (2)

Publication Number Publication Date
WO1999039094A2 WO1999039094A2 (en) 1999-08-05
WO1999039094A3 true WO1999039094A3 (en) 2000-01-06

Family

ID=26753820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1999/000068 Ceased WO1999039094A2 (en) 1998-01-28 1999-01-28 Driver circuit for fuel vapor leak detection system

Country Status (1)

Country Link
WO (1) WO1999039094A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467464B2 (en) 1999-12-10 2002-10-22 Delphi Technologies, Inc. Vacuum based fuel system
US7131322B2 (en) * 2005-04-07 2006-11-07 Daimlerchrysler Corporation Vehicle evaporative system diagnostic
FR2958690B1 (en) * 2010-04-08 2014-01-17 Continental Automotive France METHOD AND DEVICE FOR DETECTING THE LOCKING OF THE FAN VALVE FUEL VAPOR VALVE
DE102011101657B3 (en) * 2011-05-17 2012-05-24 Daimler Ag Device for binding vapors from a fuel tank

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146902A (en) * 1991-12-02 1992-09-15 Siemens Automotive Limited Positive pressure canister purge system integrity confirmation
US5411004A (en) * 1993-02-03 1995-05-02 Siemens Automotive Limited Positive pressure canister purge system integrity confirmation
US5474050A (en) * 1995-01-13 1995-12-12 Siemens Electric Limited Leak detection pump with integral vent seal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146902A (en) * 1991-12-02 1992-09-15 Siemens Automotive Limited Positive pressure canister purge system integrity confirmation
US5411004A (en) * 1993-02-03 1995-05-02 Siemens Automotive Limited Positive pressure canister purge system integrity confirmation
US5474050A (en) * 1995-01-13 1995-12-12 Siemens Electric Limited Leak detection pump with integral vent seal

Also Published As

Publication number Publication date
WO1999039094A2 (en) 1999-08-05

Similar Documents

Publication Publication Date Title
US7051718B2 (en) Fuel vapor leak check module
JP3402605B2 (en) Canister purge solenoid control valve with improved purge function when the engine is idling
US5803056A (en) Canister vent valve having electric pressure sensor and valve actuator
US7353812B1 (en) Vehicle engine with integral vacuum generator
US9506428B2 (en) Turbo bypass switch valve mounting on air box
US6050245A (en) Canister vent valve having at least one sensor and single electric actuator operatively connected to a single electrical connector
US6112728A (en) Device for diagnosis of a tank ventilation system of a vehicle
US9097216B2 (en) Fuel vapor purge device
WO2001038716B1 (en) Integrated pressure management system for a fuel system
JP2004263676A (en) Leak checking device of evaporated fuel treating device
EP0955459A3 (en) Air control valve assembly for fuel evaporative emission storage canister
JP2004232521A (en) Leak check device of evaporation fuel treating device
WO2015104813A1 (en) Insertion structure, canister, and canister vent solenoid valve
CA2272526A1 (en) Tank venting arrangement for motor vehicles
JP2001140717A (en) Fuel vapor gas control device
WO1999039094A3 (en) Driver circuit for fuel vapor leak detection system
US9500163B2 (en) Servo controlled EVAP leak detection system
US3768366A (en) Selective pressure differential reinforcing means
CN111094732B (en) Fuel Evaporated Gas Emission Suppression Device
US20090132147A1 (en) Evaporative emission canister purge actuation monitoring system having an integrated fresh air filter
JP6590758B2 (en) Canister and canister vent solenoid valve
KR20100038175A (en) Evaporative emission canister purge actuation monitoring system
US7114372B2 (en) Fuel vapor leak check module
CN2233016Y (en) Two-way pressure valve
US5533488A (en) Vacuum sustaining valve

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): BR JP KR

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): BR JP KR

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

NENP Non-entry into the national phase

Ref country code: KR

122 Ep: pct application non-entry in european phase