WO2019136564A1 - Ensemble évent à utiliser dans un réservoir de fluide d'un moteur - Google Patents

Ensemble évent à utiliser dans un réservoir de fluide d'un moteur Download PDF

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Publication number
WO2019136564A1
WO2019136564A1 PCT/CA2019/050041 CA2019050041W WO2019136564A1 WO 2019136564 A1 WO2019136564 A1 WO 2019136564A1 CA 2019050041 W CA2019050041 W CA 2019050041W WO 2019136564 A1 WO2019136564 A1 WO 2019136564A1
Authority
WO
WIPO (PCT)
Prior art keywords
vent
vent assembly
assembly according
series
fluid reservoir
Prior art date
Application number
PCT/CA2019/050041
Other languages
English (en)
Inventor
Richard Allan
Omar DAHHAN
Original Assignee
Abc Group 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 Abc Group Inc. filed Critical Abc Group Inc.
Publication of WO2019136564A1 publication Critical patent/WO2019136564A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • 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
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F02M25/0222—Water recovery or storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0236—Diaphragm cut-off apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/07—Construction of housing; Use of materials therefor of cutting-off parts of tanks, e.g. tank-cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03348—Arrangements or special measures related to fuel tanks or fuel handling for supplying additives to fuel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K2015/03542—Mounting of the venting means
    • B60K2015/03547—Mounting of the venting means the venting means are integrated in the fuel cap or inlet cover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention pertains to the field of fluid reservoirs for engines, in particular to a vent assembly for use in a fluid reservoir of an engine of a vehicle.
  • Fluid injection such as water injection
  • ADI anti-detonation injection
  • Fluid injection is used to impart a cooling effect upon a fuel-air mixture within an intake manifold.
  • Such systems may be configured to deliver a fine water mist which evaporates, therein causing a drop in an air intake temperature.
  • the decrease in air temperature results in increased air density, and hence increases an amount of fuel-air mixture that can enter a combustion chamber.
  • the effect is more power, with increased fuel efficiency, and potentially a reduction in harmful gaseous emissions (i.e. reduced NO x and CO).
  • Fluid injection also serves to control pre-detonation, a detrimental pre-ignition event where the fuel entering the combustion chamber detonates prior to being fully compressed. This generally occurs when the fuel-air mixture encounters an excessively heated combustion environment (i.e. excessively heated chamber walls) and detonates prior to a timed ignition sequence dictated by a spark plug. By cooling the intake temperature as noted above, the likelihood of pre-detonation is reduced.
  • Fluid injection systems may be based solely on water (i.e. distilled water), or may include a range of water/alcohol mixtures.
  • water/alcohol mixtures i.e. distilled water
  • a ratio of 40/60 water/methanol is found to be particularly effective.
  • Fluid injection systems implement a fluid reservoir from which the water (or water/alcohol mixture) is drawn. It is imperative that the fluid reservoir remain clean of contaminants, in particular of contaminates that would support microbial (i.e. bacterial) growth. This can be particularly problematic with water/alcohol mixtures, where the alcohol used serves as a growth substrate for microbes in the fluid reservoir, resulting in undesirable suspended and/or biofilm formation. Microbial growth may result in undesirable odours, and may potentially create fouling issues for the fluid/water injectors.
  • microbial i.e. bacterial
  • a vent assembly for use in a fluid reservoir of an engine.
  • the vent assembly comprises a primary body, a pliable vent flap, and a filter body.
  • the primary body provides the structure to support the pliable vent flap and the filter body.
  • the primary body provides a series of vent openings to permit for the passage of air through the vent assembly, wherein the pliable vent flap is configured to allow both air egress during fluid reservoir filling, and air ingress during fluid usage.
  • the filter body permits for the passage of air through the vent assembly, while preventing the ingress of environmental water and/or contaminants.
  • FIG. 1 is a schematic illustration of a fluid injection system for an internal combustion engine.
  • FIG. 2 is a schematic illustration of a fluid reservoir used in the fluid injection system of Fig. 1.
  • FIG. 3 is a perspective view of a vent assembly according to an embodiment of the invention.
  • FIG. 4 is a side view of the vent assembly according to Figs. 1 and 2, shown mounted upon a fluid reservoir (represented in-part).
  • FIG. 5 is an exploded view of the vent assembly according to Figs. 1 and 2.
  • Figs 6a and 6b are sectional perspective views of the vent assembly according to Figs. 1 and 2.
  • Figs. 7a and 7b are perspective views of the vent assembly according to Figs. 1 and 2, shown without the cover and with the filter body in partial transparency, to highlight the flow path of air through the assembly.
  • FIG. 8 is a side view of a vent assembly in accordance with another embodiment of the present invention.
  • FIG. 9 is a perspective view of the vent assembly according to Fig. 8.
  • Fig. 10 is a sectional view of the vent assembly according to Fig. 8.
  • FIG. 11 is a sectional view of another embodiment of the invention, incorporating a cylindrical float valve shown in a sealed position.
  • Fig. 12 is a sectional view of the vent assembly according to Fig. 11, showing the cylindrical float valve in an unsealed position.
  • Fig. 13 is a sectional view of a further embodiment of the invention, incorporating a ball float valve shown in a sealed position.
  • Fig. 14 is a sectional view of the vent assembly according to Fig. 12, showing the ball float valve in an unsealed position.
  • an exemplary fluid injection system 10 is shown, and in accordance with embodiments hereof may alternatively be referred to as a water injection system.
  • the fluid injection system 10 is configured to deliver a fluid or water supply to an engine 20, in particular an intake manifold 22 in atomized form through one or more fluid or water injectors (not shown).
  • the fluid injection system 10 includes a fluid reservoir 26 for retaining a select volume of water, a pump mechanism 28, and a series of fluid supply conduits 30a, 30b.
  • the fluid supply conduits 30a, 30b fluidly connect the fluid reservoir 26 to the one or more fluid injectors on the intake manifold 22 through the pump mechanism 28 which is positioned there between.
  • Additional functional elements connected to the fluid supply conduits 30a, 30b may include, but are not limited to check valves, fluid drainage valves (to remove water from the fluid supply conduit), fluid supply return lines (for circulating the water in the fluid reservoir 26), filters (for the removal of particulates and contaminates from the water supply) and any necessary diverters required to deliver the supply of water to respective fluid injectors, in particular where a plurality of fluid injectors are provided.
  • the supply of water will generally be under the control of the pump mechanism 28, which in turn is controlled using a suitable electronic control unit forming part of the vehicle controller area network.
  • the fluid reservoir 26 includes a fill inlet 32 and a cap 34, permitting an operator to fill the fluid reservoir 26 as required.
  • the fluid reservoir 26 further includes an outlet 36 which directs a supply of water into the fluid supply conduits 30a, 30b (not shown).
  • the fluid reservoir 26 is configured to hold a fluid such as water or a water/alcohol mixture.
  • the fluid reservoir 26 may be located in the engine compartment, or at the rear of the vehicle.
  • vent to permit the egress of air during filling, or the ingress of air during fluid depletion facilitates optimal fluid flow performance.
  • a pressure build-up within the fluid reservoir of the added fluid could potentially cause a splash-back towards an operator filling the reservoir.
  • the lack of vent may result in an undesirable vacuum condition in the fluid reservoir, thereby preventing fluid flow.
  • the fluid reservoir 26 implements the use of a vent assembly 38. It will be appreciated, however, that the use of a vent on the fluid reservoir 26 comes with inherent risks, as the water contained therein could be subject to contamination through the vent. As the fluid reservoir 26 may be located at a lower region of a vehicle, much like a fuel tank, a vent may be exposed to external or environmental water conditions, for example if the vehicle were to drive through elevated water levels. To address this, the vent assembly 38 is configured to prevent the ingress of water through the vent assembly and into the fluid reservoir 26, while permitting for the required venting during filling and fluid use.
  • the vent assembly 38 is shown in isolation in Fig. 3, mounted on the fluid reservoir 26 in Fig. 4, and in isolation and exploded in Fig. 5.
  • the vent assembly 38 includes a primary body 40, a pliable vent flap 42, a filter body 44, a cover 46, and a sealing member 48.
  • the primary body 40 of the vent assembly 38 includes an attachment portion 50 which is configured to be fastened, bonded, welded or otherwise affixed in a suitable manner to a receiving boss 52 on the fluid reservoir 26.
  • each of the attachment portion 50 and the boss 52 are provided with respective threads 54a, 54b to permit for threaded releasable attachment.
  • the sealing member 48 is situated between the boss 52 and a flange 56 that forms a part of the primary body 40.
  • the primary body 40 provides the structure to support the pliable vent flap 42 and the filter body 44, and provides a series of openings that permits for air passage there through.
  • a first series of radially arranged vent openings 58 are provided on a base 60 configured to receive and support the pliable vent flap 42.
  • a second series of vent openings 62 are provided in a radially-extending first filter support wall 64, while a third series of vent openings 66 are provided in a longitudinally-extending second filter support wall 68.
  • the second and third series of vent openings 62, 66 are circumferentially offset from each other, thereby establishing a tortuous flow path to lessen the likelihood of external or environmental water ingress into the vent assembly.
  • the first and second filter support walls 64, 68 support the filter element 44, and also permit for the attachment of the cover 46 through a suitable attachment mechanism (i.e. a snap fit connection).
  • a suitable attachment mechanism i.e. a snap fit connection
  • the attachment mechanism configured to affix the cover 46 to the vent assembly 38 may be a releasable attachment mechanism, to permit for the removal of the cover 46 when necessary.
  • FIGs 6a and 6b the first, second and third series of vent openings 58, 62, 66 are shown in the assembled vent assembly 38.
  • the second and third filter support walls 64, 68 support the filter element 44, while the base 60 supports the pliable vent flap 42.
  • the base 60 also provides an aperture 70 which receives an attachment member 72 formed as part of the pliable vent flap 42.
  • the attachment member 72 is configured with a barbed head to facilitate a locked attachment once inserted though the aperture 70 with the pliable vent flap 42 seated upon or abutting with the base 60.
  • FIGs. 7a and 7b where the filter body 44 is shown in partial transparency
  • the vent assembly 38 the movement of air (denoted by dashed arrows) either from the fluid reservoir 26 to the outside (see Fig. 7a), or from the outside to the fluid reservoir (see fig. 7b), the air must pass through the filter body 44.
  • vent pin hole 74 provided through the attachment member 72.
  • the use of a vent pin hole 74 is sufficient to prevent the formation of a vacuum condition in the fluid reservoir 26. It will be appreciated, however, that additional vent pin holes may be provided.
  • the use of the filter body 44 serves as both a physical barrier and a filtration barrier for any external or environmental water that may be driven towards the intermediate area A of the vent assembly 38. Should such water enter the intermediate area A, the pliable vent flap 42 serves as a one-way valve, to prevent the passage of water through the first series of openings 58 in the base 60 and into the fluid reservoir 26.
  • the structural components of the vent assembly 38 namely the primary body 40 may be constructed of any suitable polymeric material including but not limited to polypropylene, polyethylene, and polycarbonate.
  • the thermoplastic may also include various fillers known in the art, including but not limited to mineral fillers (i.e. calcium carbonate, talc, etc.) as well as additives, including but not limited to fibrous additives (i.e. glass fibers, carbon fibers, etc.).
  • the primary body 40 as presented may be injection molded, although alternative manufacturing methodologies may be suitably implemented to achieve the desired form.
  • the filter body 44 may be formed of a variety of materials.
  • the filter body 44 may by formed of non-woven materials including but not limited to synthetic and natural fibers.
  • the filter body 44 may be formed of a porous non-woven polyethylene terephthalate (PET) membrane.
  • PET polyethylene terephthalate
  • the filter body 44 may be constructed and/or treated with antimicrobial/biocidal compounds/additives, including but not limited to inorganic additives (i.e. zinc, copper, colloidal silver, silver salts, silver zeolite/ion exchange resins, complex glasses containing metal ions, and nanosilvers) and organic additives (i.e.
  • Oxybisphenox Arsine OBPA
  • OBPA Oxybisphenox Arsine
  • 4,5-Dichloro-2-(N-OCTYL)-4-lsothiazolin-3-One, Triclosan The exclusion of microbes may also be achieved by selecting a membrane having a pore density and sizing that occludes the passage of microbes there through.
  • the filter body 40 may also be constructed/treated with suitable materials so to attain a generally hydrophobic character, to repel water and prevent the accumulation of water in the filter body 40.
  • one or more additional anti-slosh baffles may be incorporated in to the primary body, to reduce the potential impact of fluid slosh upon the vent assembly.
  • Figs. 8 to 10 show a vent assembly 138 having generally the same structure as the vent assembly 38 discussed above. Accordingly, only those features added or modified in relation to the vent assembly 38 are discussed below.
  • the vent assembly 138 in particular a primary body 140 incorporates a first slosh baffle 180 that extends from an attachment portion 150 of the primary body 140 inwardly towards an interior volume of the fluid reservoir (not shown).
  • the primary body 140 is also shown to include a second slosh baffle 182 that extends from a base 160 of the primary body 140 inwardly towards the interior volume of the fluid reservoir.
  • Each of the first and second slosh baffles 180, 182 also include one or more slots 184 to permit for venting within the regions defined by the slosh baffles.
  • a float valve may be incorporated into a primary body.
  • Figs. 11 and 12 show a vent assembly 238 having generally the same structure as the vent assembly 38 discussed above, with the added feature of a float valve. Accordingly, only those features added or modified in relation to the vent assembly 38 are discussed below.
  • the vent assembly 238, in particular a primary body 240 incorporates a body extension 280 similar to the slosh baffle 180 of the vent assembly 138, the body extension 280 extending downwardly from the attachment portion 250, that is towards the interior volume of the fluid reservoir.
  • the body extension 280 defines a generally cylindrical interior space A configured to receive a float valve 286.
  • the float valve 286 is a cylindrical member that exhibits buoyancy relative to the water contained within the fluid reservoir.
  • the float valve 286 supports on an upper surface 286a of a pliable vent seal 288 configured to seal against an underside surface 290 of a base 260.
  • the pliable vent seal 288 may be attached to the float valve 286 in a variety of ways.
  • the pliable vent seal 288 provides an attachment barb 292 that seats within a channel or recess 294 provided on the upper surface 286a of the float valve 286. Attachment of the pliable vent seal 288 may also be achieved through the use of a suitable adhesive.
  • the float valve 286 is displaceable within the interior space A, in response to the water level within the fluid reservoir, and is configured to establish a sealing contact between the pliable vent seal 288 and the underside surface 290 of the base 260 upon the water level reaching or exceeding a set maximum level (shown at W1 in Fig. 11).
  • a set maximum level shown at W1 in Fig. 11
  • the float valve 286 displaces downwardly within the vent assembly 238, therein establishing a gap G between the pliable vent seal 288 and the underside surface 290 of the base 260.
  • the vent assembly 238 permits air-flow both outwardly and inwardly of the vent assembly 238.
  • the float valve 286 is sized to provide a gap between the outside surface 286b of the float valve 286 and the interior surface 280a of the body extension 280.
  • one or more side channels 296 are provided on the outside surface 286b of the float valve 286.
  • the vent assembly 238 also provides an alternative fastening mechanism to attach the vent assembly 238 to a fluid reservoir. As shown, the vent assembly 238 is mounted to a fluid reservoir by engaging a wall portion of the fluid reservoir 26 between a first flange
  • a sealing member 248 is generally used.
  • FIGs. 13 and 14 provide an alternative embodiment of a vent assembly 338 where a float valve 386 is presented in the form of a ball.
  • a vent assembly 338 is generally similar to the vent assembly 238 discussed above, only those features added or modified in relation to the vent assembly 38, 238 are discussed below.
  • the vent assembly 338 provides a float valve 386 that is displaceable within the interior space A defined by body extension 380, in response to a change in the water level within the fluid reservoir.
  • the float valve 386 is spherical, and is configured to establish a sealing contact between an outside surface 386a of the float valve 386 and a seal ring 360a extending from an underside surface 390 of a base 360. The sealing contact occurs upon the water level reaching or exceeding a set maximum level (shown at W1 in Fig. 13). When the water level is below the set maximum point, for example as shown by W2 in Fig.
  • the float valve 386 displaces downwardly within the vent assembly 338, therein establishing a gap G2 between the outside surface 386a of the spherical float valve 386 and the seal ring 360a extending from the underside surface 390 of the base 360.
  • the vent assembly 338 permits air-flow both outwardly and inwardly of the vent assembly 338.
  • the float valve 386 is sized to provide a gap between the outside surface 386a of the float valve 386 and the interior surface 380a of the body extension 380.
  • the float valves 286, 386 may be any material that exhibits the required buoyancy, including but not limited to a foam resin.
  • the float valves 286, 386 may be a sealed hollow structure, formed of a suitable plastic or metal material.
  • a still further alternative is to use an inverted hollow cup-like structure that maintains an air pocket above the water contained in the fluid reservoir.
  • the vent assemblies 238, 338 may incorporate a feature to limit the downward displacement of the float valves 286, 386 within the respective body extensions 280, 380, in particular when the water level is low. This is to prevent the float valves 286, 386 from becoming detached or uncoupled from the vent assembly.
  • the vent assemblies 238, 338 may incorporate a stop feature (not shown) arranged on the respective inside surface 280a, 380a of the body extension 280, 380, to establish a limit of downward displacement.
  • a stop feature may also be provided in the form of an obstruction at the bottom open end of the body extension.
  • a suitable cable-tie could be used to span the bottom open end, to limit the displacement of the float valve to the interior volume A of the body extension 280, 380.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

L'invention concerne un ensemble évent destiné à être utilisé dans un réservoir de fluide d'un moteur. L'ensemble évent comprend un corps principal, un rabat d'évent pliable et un corps de filtre. Le corps principal fournit la structure pour supporter le rabat d'évent pliable et le corps de filtre. Le corps principal fournit une série d'ouvertures d'évent pour permettre le passage d'air à travers l'ensemble évent, le volet d'évent pliable étant conçu pour permettre à la fois la sortie d'air pendant le remplissage du réservoir de fluide et l'entrée d'air pendant l'utilisation du fluide. Le corps de filtre permet le passage d'air à travers l'ensemble évent, tout en empêchant l'entrée d'eau et/ou de contaminants environnementaux.
PCT/CA2019/050041 2018-01-11 2019-01-11 Ensemble évent à utiliser dans un réservoir de fluide d'un moteur WO2019136564A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862616330P 2018-01-11 2018-01-11
US62/616,330 2018-01-11
US201862633347P 2018-02-21 2018-02-21
US62/633,347 2018-02-21

Publications (1)

Publication Number Publication Date
WO2019136564A1 true WO2019136564A1 (fr) 2019-07-18

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535772A (en) * 1995-05-01 1996-07-16 Stant Manufacturing Inc. Tank venting control system
US6450192B1 (en) * 1998-05-28 2002-09-17 Compagnie De Materiel Et D'equipements Techniques C.O.M.E.T. Device for ventilating a motor vehicle fuel tank
US20050133089A1 (en) * 2003-12-18 2005-06-23 Kyosan Denki Co., Ltd. Evaporative gas control valve structure
US7216635B1 (en) * 2004-09-30 2007-05-15 Walbro Engine Management, L.L.C. Evaporative emission controls in a fuel system
US20070186976A1 (en) * 2006-02-16 2007-08-16 Ti Group Automotive Systems, L.L.C. Fuel storage system for a vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535772A (en) * 1995-05-01 1996-07-16 Stant Manufacturing Inc. Tank venting control system
US6450192B1 (en) * 1998-05-28 2002-09-17 Compagnie De Materiel Et D'equipements Techniques C.O.M.E.T. Device for ventilating a motor vehicle fuel tank
US20050133089A1 (en) * 2003-12-18 2005-06-23 Kyosan Denki Co., Ltd. Evaporative gas control valve structure
US7216635B1 (en) * 2004-09-30 2007-05-15 Walbro Engine Management, L.L.C. Evaporative emission controls in a fuel system
US20070186976A1 (en) * 2006-02-16 2007-08-16 Ti Group Automotive Systems, L.L.C. Fuel storage system for a vehicle

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