WO2001012973A1 - Module air-carburant integre a faibles emissions de vapeurs de carburant - Google Patents

Module air-carburant integre a faibles emissions de vapeurs de carburant Download PDF

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Publication number
WO2001012973A1
WO2001012973A1 PCT/US2000/022297 US0022297W WO0112973A1 WO 2001012973 A1 WO2001012973 A1 WO 2001012973A1 US 0022297 W US0022297 W US 0022297W WO 0112973 A1 WO0112973 A1 WO 0112973A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
engine
fuel
valve
module
Prior art date
Application number
PCT/US2000/022297
Other languages
English (en)
Inventor
Keith Allen Confer
Thomas W. Newman
Charles Wilson Braun
Michael Roland Brosseau
Daniel Frederick Smith
Curtis David Lamb
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.
Priority to US10/069,316 priority Critical patent/US6679228B1/en
Priority to DE60033057T priority patent/DE60033057T2/de
Priority to EP00955532A priority patent/EP1252430B1/fr
Publication of WO2001012973A1 publication Critical patent/WO2001012973A1/fr

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • 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
    • F02M25/089—Layout of the fuel vapour installation
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10281—Means to remove, re-atomise or redistribute condensed fuel; Means to avoid fuel particles from separating from the mixture
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/104—Intake manifolds
    • F02M35/116—Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft
    • 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

Definitions

  • This invention relates to control of engine evaporative emissions of hydrocarbons and to a low emission integrated air fuel module capable of containing such emissions.
  • a third common source of hydrocarbon emissions to the atmosphere is permeation of the fuel through the materials of the system.
  • Hydrocarbons can permeate most composite and elastomer materials commonly used in the automotive engine environment. Small amounts of hydrocarbons therefore leak through the walls of composite components in the system and through the elastomer O-rings and seals at the interfaces in the system. This leakage is increased with higher fuel pressures driving the hydrocarbons out through the walls.
  • the present invention provies an integrated air fuel module for an internal combustion engine that reduces or eliminates the escape of hydrocarbon evaporative emissions from the integrated air fuel module system, sub systems and components.
  • the integrated air fuel module of the present invention includes containment means, such as a valve or carbon adsorber, that blocks the escape of evaporated hydrocarbon emissions from the air inlet of an internal combustion engine du ⁇ ng engine off conditions.
  • the module provides a reduced number of potential external hydrocarbon leak and permeation paths to the surrounding atmosphere.
  • Preferred geometries of the intake manifold in the module with the internal integration of other normally external systems, such as fuel injection and positive crankcase ventilation systems, accomplish the containment of evaporative emissions within or entering the air fuel module between engine operating periods when the engine is shut down.
  • FIG. 1 is a conceptual cross-sectional view of a low evaporative emissions integrated air fuel module including features according to the invention
  • FIG. 2 is a cross-sectional view showing an exemplary form of containment valve in the module inlet portion
  • FIG. 3 is an exterior pictorial view of a module for a V-8 engine including features of the invention. DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Module 10 generally indicates an exemplary low evaporative emissions integrated air fuel module for an internal combustion engine, the module including features according to the invention.
  • Module 10 includes a housing 12 internally defining an air system 14.
  • the air system includes in series an inlet portion 16 for admitting charge air, a throttle control portion 18 having a throttle valve 20 for controlling air flow, a connecting portion 22, or zip tube, for tuning the air flow, an inlet plenum 24 for distributing and balancing the air flow, and a plurality of intake runners 26.
  • the runners 26 connect individually with the plenum and connect the plenum 24 with outlet ports 28 along a cylinder head interface 30 coplanar with a mounting flange 32 of the housing 12.
  • the runners 26 and outlet ports 28 distribute the air flow to inlet ports of an engine, not shown, for intermittent admission to associated cylinders during operation of the engine.
  • the inlet portion includes containment means for limiting the escape of evaporative emissions from within the air system through the inlet portion between periods of engine operation, that is, when the engine is stopped.
  • Air system 14 includes an exemplary embodiment of containment means in the form of a containment valve 34, shown in further detail with the inlet portion 16 in FIG. 2.
  • Valve 34 includes a pivotable edge mounted flapper type valve element 36 including a sharp edged sealing portion 38 engagable, when the valve is closed, with a valve seat 40 of an air inlet 42 in the inlet portion 16.
  • a variable force spring 44 engages the valve element to bias the valve in a closing direction.
  • the spring 44 may be a curved spring steel tape shaped similarly to a steel rule tape but used as a spring. In the closed position shown in solid lines, the spring is positioned to exert a maximum force to hold the valve element 36 firmly against the valve seat 40. When the valve is opened, the spring flattens and bends easily to allow opening of the valve against a lower spring force.
  • An actuator 46 is provided for pivoting the valve element to the open position shown in dashed lines in FIGS. 1 and 2. Any suitable form of actuator may be used which is responsive to signals indicating operating and shutdown conditions of the engine.
  • the illustrated acmator represents a vacuum motor 46 that opens the valve in response to vacuum in the air system 14, which indicates that the engine is in operation.
  • the vacuum motor 46 allows the valve to be closed and held in place by the spring 44 when loss of vacuum with near ambient pressure in the air system indicates that the engine is stopped.
  • Containment valve 34 and vacuum motor 46 are only exemplary of the many forms of suitable containment means and actuators which could be used within the scope of the invention. Any suitable electric, pneumatic or fluid actuator might be used with appropriate controls if needed. Containment means may include many forms of valves, including pivoting blades, plungers, reed valves and other check valves, as examples. Instead of valves, carbon adsorbers may provide adequate containment of evaporative emissions and could be used as containment means within the scope of the invention.
  • the air fuel module 10 also includes a positive crankcase ventilation (PCV) system 50, which is primarily contained within the air system 14 of the housing 12.
  • the PCV system 50 includes a ventilation inflow passage 52 that connects the air inlet portion between the containment valve 34 and the throttle valve 20 with a ventilation outlet 54 at the cylinder head interface 30 of the housing.
  • a ventilation outflow passage 56 is also provided which extends from the interface 30 to the air system 14 downstream of the throttle valve 20.
  • Passages 52, 56 are defined by walls that are primarily contained within the housing defined air system 14 of the module 10. When the module 10 is installed on an engine, the passages 52, 56, including outlet 54, are connected with the crankcase chamber of the engine for passing ventilation air through the crankcase.
  • a PCV valve 58 is located in the ventilation outflow passage 56 to control the flow of air and crankcase vapors through the PCV system.
  • the air fuel module 10 further includes a fuel injection system 60 that is primarily contained within the air system 14 of the housing 12.
  • Fuel injection system 60 includes one or more fuel rails 62 that extend longitudinally within the housing 12.
  • a plurality of fuel injectors 64 are connected with the fuel rail(s) to receive pressurized fuel supplied from a source external to the module housing 12.
  • the fuel rail(s) 62 and the injectors 64 are mounted entirely within the housing 12 and the air system 14 defined by the housing.
  • the injectors are positioned to spray fuel out through the outlet ports 28 from the runners 26 to mix with air in the intake ports and cylinders of the associated engine, not shown).
  • the mounting locations of the injectors and all the connections with the fuel rails and of the fuel rails with incoming fuel lines are contained with the air system 14.
  • any leakage of evaporative emissions from the internal portions of the fuel system will be contained within the air system and drawn into the engine during engine operation.
  • a molded housing may require treatment of at least the outer walls to maintain containment of evaporated hydrocarbons and other substances within the housing when the engine is shut down.
  • the housing 12, or at least its outer walls may be made from cast aluminum or other metal having low permeability.
  • the housing 12 is preferably made as a plastic molding in three sections, an entry conduit 66, an upper manifold 68 and a lower manifold 70.
  • the lower manifold 70 includes the mounting interface 30 and the lower portions of the plenum 24 and runners 26 as well as the components of the fuel injection system 60.
  • the upper manifold 68 includes upper portions of the plenum 24 and runners 26.
  • the PCV system passages 52, 56 extend into both manifold sections 68, 70 but the PCV valve 58 is mounted in the upper manifold.
  • the entry conduit 66 is mounted on the upper manifold 68 and is removable to allow access to service the PCV valve.
  • the air fuel module 72 there disclosed further includes within a housing 74, a coolant crossover 76 having internal passages, not shown, for carrying coolant between cylinder banks of an associated V-8 engine.
  • a liquid cooled electrical alternator 78 is mounted within the crossover 76 and is cooled by coolant in the passages during engine operation.
  • the figure also shows a side mounted electric throttle control 80 for the internal throttle valve.
  • the housing 74 is made in two sections, including an upper manifold 82 mounted on a lower manifold 84. The latter includes a mounting flange 86 coplanar with the lower interface, not shown, that mounts on the associated engine cylinder heads.
  • the elements of the module 72 are essentially similar to those of module 10 in FIG. 1.
  • the containment valve 34 is opened upon starting of the engine, and remains open, allowing the entry of charging air into the module air system 14. Vaporized hydrocarbons and other vapors retained in the air system are drawn into the engine with the new air charges and burned in the engine. Any fuel vapors seeping into the air system 14 during engine operation are likewise drawn into the engine and burned along with the crankcase vapors flushed out by the PCV system 50, which are drawn from the engine crankcase by vacuum in the module downstream of the throttle valve 20. The inlet air controlled by the throttle valve and including any added crankcase vapors continues through the manifold connecting portion or zip tube 22 and enters the inlet plenum 24.
  • the air is then drawn into the individual engine cylinders through the intake runners 26 and outlet ports 28 of the module into associated intake ports of the engine.
  • Fuel is added to the incoming air by the fuel injectors 64 that are part of the fuel injection system 60 enclosed within the air fuel module 10.
  • the fuel is sprayed from the module directly into the cylinder head intake ports, not shown, and normally against the intake valve to assist vaporization.

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

L'invention concerne un module air-carburant intégré destiné à un moteur à combustion interne et permettant de réduire ou d'éliminer les émissions de vapeurs d'hydrocarbures depuis le système de module air-carburant intégré, les sous-systèmes et leurs composants. Ce module air-carburant intégré comprend un organe de rétention, tel qu'une soupape ou un adsorbeur de carbone, qui bloque les émissions de vapeurs d'hydrocarbures depuis l'admission d'air d'un moteur lorsque celui-ci est éteint. Ledit module permet de réduire les fuites d'hydrocarbures potentielles et les chemins de perméation conduisant à l'atmosphère environnante. Les configurations préférées du collecteur d'admission dans le module impliquant l'intégration interne d'autres systèmes habituellement externes, tels que les systèmes d'injection de carburant et de recyclage des gaz de carter, permettent de retenir les émissions de vapeurs de carburant à l'intérieur du module air-carburant entre les périodes de fonctionnement du moteur lorsque celui-ci est éteint.
PCT/US2000/022297 1999-08-16 2000-08-15 Module air-carburant integre a faibles emissions de vapeurs de carburant WO2001012973A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/069,316 US6679228B1 (en) 1999-08-16 2000-08-15 Low evaporative emissions integrated air fuel module
DE60033057T DE60033057T2 (de) 1999-08-16 2000-08-15 Integriertes luft-brennstoff-modul mit niedrigen brennstoff-gas-emissionen
EP00955532A EP1252430B1 (fr) 1999-08-16 2000-08-15 Module air-carburant integre a faibles emissions de vapeurs de carburant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14914299P 1999-08-16 1999-08-16
US60/149,142 1999-08-16

Publications (1)

Publication Number Publication Date
WO2001012973A1 true WO2001012973A1 (fr) 2001-02-22

Family

ID=22528969

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/022297 WO2001012973A1 (fr) 1999-08-16 2000-08-15 Module air-carburant integre a faibles emissions de vapeurs de carburant

Country Status (3)

Country Link
EP (1) EP1252430B1 (fr)
DE (1) DE60033057T2 (fr)
WO (1) WO2001012973A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359313A2 (fr) * 2002-04-15 2003-11-05 Ford Global Technologies, LLC Système d'admission d'air pour un moteur à combustion interne
US6692551B2 (en) 2002-07-17 2004-02-17 Delphi Technologies, Inc. Air cleaner assembly and process
US6752859B2 (en) 2002-10-02 2004-06-22 Delphi Technologies, Inc. Air cleaner assembly for reducing pollutants from being discharged into the atmosphere
DE10234133B4 (de) * 2001-10-11 2005-04-28 Hyundai Motor Co Ltd System und Verfahren zum Behandeln von Durchblasgasen in einem PCV-System eines Verbrennungsmotors
US7578285B2 (en) 2005-11-17 2009-08-25 Basf Catalysts Llc Hydrocarbon adsorption filter for air intake system evaporative emission control

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8464698B2 (en) * 2008-04-24 2013-06-18 GM Global Technology Operations LLC Air intake assembly with integrated crankcase ventilation system
US8020541B2 (en) 2009-12-15 2011-09-20 GM Global Technology Operations LLC Positive crankcase ventilation system

Citations (8)

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Publication number Priority date Publication date Assignee Title
US3554175A (en) * 1969-12-08 1971-01-12 Chrysler Corp Evaporative emission control system
US4628887A (en) * 1985-02-28 1986-12-16 Canadian Fram Limited Automatically opening canister purge solenoid valve
US4682576A (en) * 1984-06-10 1987-07-28 Mazda Motor Corporation Intake system for diesel cycle engines
US4796584A (en) * 1986-02-07 1989-01-10 Nippondenso Co., Ltd. Intake control system for internal combustion engine and intake control valve used therein
US4856487A (en) * 1985-12-24 1989-08-15 Kabushiki Kaisha Tsuchiya Seisakusho Gas flow rate control system for internal combustion engine
US5408977A (en) * 1993-08-23 1995-04-25 Walbro Corporation Fuel tank with carbon canister and shut-off valve
US5429099A (en) * 1994-09-08 1995-07-04 Lectron Products, Inc. Anti-permeation filter for vapor management valve
US5715782A (en) * 1996-08-29 1998-02-10 Genral Motors Corporation Composite molded butterfly valve for an internal combustion engine

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US4261717A (en) * 1979-10-15 1981-04-14 Canadian Fram Limited Air cleaner with fuel vapor door in inlet tube
DE4038509A1 (de) * 1990-12-03 1992-06-11 Mann & Hummel Filter Ansaugverteiler fuer eine brennkraftmaschine
DE4402048A1 (de) * 1994-01-25 1995-07-27 Mann & Hummel Filter Integriertes Ansaugsystem
US5575247A (en) * 1995-02-01 1996-11-19 Nippondenso Co., Ltd. Air intake device for an internal combustion engine
US5740779A (en) * 1997-01-09 1998-04-21 Northern California Diagnostic Laboratories, Inc. Apparatus for reducing evaporative hydrocarbon fuel emissions from an internal combustion engine and for improving the performance thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3554175A (en) * 1969-12-08 1971-01-12 Chrysler Corp Evaporative emission control system
US4682576A (en) * 1984-06-10 1987-07-28 Mazda Motor Corporation Intake system for diesel cycle engines
US4628887A (en) * 1985-02-28 1986-12-16 Canadian Fram Limited Automatically opening canister purge solenoid valve
US4856487A (en) * 1985-12-24 1989-08-15 Kabushiki Kaisha Tsuchiya Seisakusho Gas flow rate control system for internal combustion engine
US4796584A (en) * 1986-02-07 1989-01-10 Nippondenso Co., Ltd. Intake control system for internal combustion engine and intake control valve used therein
US5408977A (en) * 1993-08-23 1995-04-25 Walbro Corporation Fuel tank with carbon canister and shut-off valve
US5429099A (en) * 1994-09-08 1995-07-04 Lectron Products, Inc. Anti-permeation filter for vapor management valve
US5715782A (en) * 1996-08-29 1998-02-10 Genral Motors Corporation Composite molded butterfly valve for an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1252430A4 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10234133B4 (de) * 2001-10-11 2005-04-28 Hyundai Motor Co Ltd System und Verfahren zum Behandeln von Durchblasgasen in einem PCV-System eines Verbrennungsmotors
EP1359313A2 (fr) * 2002-04-15 2003-11-05 Ford Global Technologies, LLC Système d'admission d'air pour un moteur à combustion interne
EP1359313A3 (fr) * 2002-04-15 2004-06-16 Ford Global Technologies, LLC Système d'admission d'air pour un moteur à combustion interne
US7458366B2 (en) 2002-04-15 2008-12-02 Ford Global Technologies, Llc Fugitive hydrocarbon treatment module for internal combustion engine air intake system
US6692551B2 (en) 2002-07-17 2004-02-17 Delphi Technologies, Inc. Air cleaner assembly and process
US6752859B2 (en) 2002-10-02 2004-06-22 Delphi Technologies, Inc. Air cleaner assembly for reducing pollutants from being discharged into the atmosphere
US7578285B2 (en) 2005-11-17 2009-08-25 Basf Catalysts Llc Hydrocarbon adsorption filter for air intake system evaporative emission control

Also Published As

Publication number Publication date
EP1252430A1 (fr) 2002-10-30
EP1252430A4 (fr) 2004-05-12
EP1252430B1 (fr) 2007-01-17
DE60033057D1 (de) 2007-03-08
DE60033057T2 (de) 2007-05-31

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