WO2010032160A1 - A fuel filler housing for engine driven vehicles - Google Patents

A fuel filler housing for engine driven vehicles Download PDF

Info

Publication number
WO2010032160A1
WO2010032160A1 PCT/IB2009/053925 IB2009053925W WO2010032160A1 WO 2010032160 A1 WO2010032160 A1 WO 2010032160A1 IB 2009053925 W IB2009053925 W IB 2009053925W WO 2010032160 A1 WO2010032160 A1 WO 2010032160A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
seal
housing
fuel filler
pvc
Prior art date
Application number
PCT/IB2009/053925
Other languages
French (fr)
Inventor
Christian Beck
Original Assignee
Itw Automotive Products 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
Application filed by Itw Automotive Products Gmbh filed Critical Itw Automotive Products Gmbh
Priority to EP09787137A priority Critical patent/EP2349770A1/en
Publication of WO2010032160A1 publication Critical patent/WO2010032160A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • 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
    • B60K15/04—Tank inlets
    • B60K15/05—Inlet covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans
    • 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
    • B60K15/04—Tank inlets
    • B60K15/05—Inlet covers
    • B60K2015/0553—Details concerning the inlet box or bowl in the vehicle car body panel

Definitions

  • the present invention relates to a motor- vehicle fuel filler housing comprising a body made of a comparatively hard material and at least one seal that is made of a relatively soft material and is applied by two-component injection-molding to the housing body to seal off a motor vehicle component.
  • Such motor- vehicle fuel filler housings are mounted to the motor vehicle body side.
  • a fuel conduit leading to the fuel tank terminates in the region of the housing body and is externally accessible to allow fueling the vehicle.
  • a seal seals the housing body off the fuel tank neck. This seal prevents fuel from leaking out between the fuel tank neck and the housing body when refueling.
  • Another seal may be present between the housing body and the vehicle body. The latter seal precludes fuel from leaking out of the housing body and furthermore protects the fuel filler housing from soiling.
  • the European patent document EP 0 736 406 Al discloses a housing body of a fuel- tank valve module.
  • the housing body is made of polypropylene (PP) preferably reinforced by mineral or glass fibers.
  • Sealing elements implementing sealing relative to a fuel-tank neck and the car body are injection-molded onto the housing body. These elements are elastomeric, preferably being made of an ethylenepropylenediene rubber (EPDM).
  • EPDM ethylenepropylenediene rubber
  • the objective of the present invention is to create an economical housing body offering especially high mechanical strength.
  • the motor- vehicle fuel filler housing of the present invention comprises a body made of a comparatively hard material and at least one seal formed, by two-component injection molding, on the housing body and of a comparatively softer material to seal off a motor vehicle component, the comparatively harder material being a relatively hard polyvinylchloride (PVC) and the relatively softer material being a relatively soft polyvinylchloride (PVC).
  • PVC polyvinylchloride
  • PVC polyvinylchloride
  • the housing body is affixable to the motor vehicle's body and may be tub-like. When the housing body is installed, the minimum of one seal is configured between this body and the motor vehicle component and there precludes the liquid and/or possible gaseous fuel from leaking.
  • the present invention rests on the insight that the known fuel filler housings fitted with EPDM seals on one hand are expensive and on the other hand lack sufficient op- erational strength. In particular, where diesel fuels are used, the seals degrade in time in that the plastic is ultimately destroyed. Such drawbacks may be overcome by the invention employing relatively soft PVCs for the minimum of one seal.
  • PVC materials are relatively economical. They may be processed with ease, and are highly resistant to fuels, especially also to diesel fuels. Moreover, the elasticity and softness of the PVC materials may be adjusted within wide limits by resorting to plasticizers. Consequently the properties of the minimum of one seal may be individually matched also to requirements set by the geometry of the fuel filler housing.
  • the two-component injection molding procedure is especially advantageously applicable in combination with the PVCs used in the manner of the invention as regards both the housing body and the minimum of one injection molded attached seal.
  • the two PVC materials containing the same basic polymers they shall be joined to each other in especially tightly linking manner. As a result, in some circumstances, the need for geometrically interlocking anchoring or other reinforcements in the junction's area may be dispensed with.
  • the minimum of one seal is designed to seal off a fuel-tank neck.
  • One more seal is used in a further embodiment mode, sealing off a body component to support the fuel filler housing.
  • the entire fuel filler housing inclusive the two seals may be integrally manufactured by injection molding.
  • a hinge arm made of a comparatively hard PVC is configured at the housing body and may be joined to fuel- tank flap.
  • the relatively hard PVC evinces advantageous mechanical properties applicable to said hinge arm as well.
  • the hinge arm may be pivotable and also be made by injection molding.
  • a PVC fuel-tank flap in particular a relatively hard PVC fuel-tank flap, is configured on the said hinge arm.
  • the fuel filler housing constitutes a compact module allowing especially simple configuration into the motor- vehicle body.
  • FIG. 1 is much simplified schematic cross-section of a fuel filler housing inserted into the motor- vehicle body and fitted with fuel-tank neck.
  • the fuel filler housing consists of a tub-shaped or pot-like housing body 10 made of a comparatively hard PVC.
  • the fuel filler housing is made by two-component injection molding, said body 10 being injection-molded first.
  • a first seal 12 sealing off the fuel-tank neck 14 is injection-molded onto the body 10.
  • the further seal 16 sealing off the motor- vehicle body 18 indicated in the Figure is injection-molded onto the body 10 in the same operational step.
  • the segment of the motor- vehicle body 18 is part of the vehicle's outer skin.
  • the fuel-tank neck 14 is connected by a fuel conduit to the fuel-tank. Said neck may be sealed for instance by a screw or valve seal not shown in the Figure.
  • the Figure of the present invention also shows a fuel-tank flap 20 covering the entire fuel filler housing 20.
  • the fuel-tank flap 20 is pivotably connected by an omitted hinge arm configured at the housing body 10 to said fuel filler housing.
  • the seal 12 is conical and slants relative to the wall of the fuel-tank neck 14. As a result, in the course of assembly, the fuel filler housing may be very easily slipped onto the said neck 14 and effect very good sealing. Moreover the conical seal 12 is able to absorb vibrations between the vehicle body 18 and the fuel-tank neck 14 and may compensate any manufacturing tolerances without thereby degrading sealing. Again, the seal may assume a complex shape including at least one conical segment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A motor- vehicle fuel filler housing comprising a body (10) made of a relatively hard material and at least one seal (12,16) made of a relatively soft material and attached by means of two-component injection molding onto the said body to seal off a motor- vehicle component (14,18), said relatively hard material being a relatively hard poly vinylchloride (PVC) and the relatively soft material being a relatively soft polyvinylchloride (PVC).

Description

Description
Title of Invention: A FUEL FILLER HOUSING FOR ENGINE
DRIVEN VEHICLES
[1] The present invention relates to a motor- vehicle fuel filler housing comprising a body made of a comparatively hard material and at least one seal that is made of a relatively soft material and is applied by two-component injection-molding to the housing body to seal off a motor vehicle component.
[2] Such motor- vehicle fuel filler housings are mounted to the motor vehicle body side.
In general a fuel conduit leading to the fuel tank terminates in the region of the housing body and is externally accessible to allow fueling the vehicle. A seal seals the housing body off the fuel tank neck. This seal prevents fuel from leaking out between the fuel tank neck and the housing body when refueling. Another seal may be present between the housing body and the vehicle body. The latter seal precludes fuel from leaking out of the housing body and furthermore protects the fuel filler housing from soiling.
[3] The European patent document EP 0 736 406 Al discloses a housing body of a fuel- tank valve module. The housing body is made of polypropylene (PP) preferably reinforced by mineral or glass fibers. Sealing elements implementing sealing relative to a fuel-tank neck and the car body are injection-molded onto the housing body. These elements are elastomeric, preferably being made of an ethylenepropylenediene rubber (EPDM).
[4] In the light of the above cited state of the art, the objective of the present invention is to create an economical housing body offering especially high mechanical strength.
[5] This problem is solved by features of the housing body of claim 1. Advantageous embodiment modes are defined in the dependent claims.
[6] The motor- vehicle fuel filler housing of the present invention comprises a body made of a comparatively hard material and at least one seal formed, by two-component injection molding, on the housing body and of a comparatively softer material to seal off a motor vehicle component, the comparatively harder material being a relatively hard polyvinylchloride (PVC) and the relatively softer material being a relatively soft polyvinylchloride (PVC).
[7] The housing body is affixable to the motor vehicle's body and may be tub-like. When the housing body is installed, the minimum of one seal is configured between this body and the motor vehicle component and there precludes the liquid and/or possible gaseous fuel from leaking.
[8] The present invention rests on the insight that the known fuel filler housings fitted with EPDM seals on one hand are expensive and on the other hand lack sufficient op- erational strength. In particular, where diesel fuels are used, the seals degrade in time in that the plastic is ultimately destroyed. Such drawbacks may be overcome by the invention employing relatively soft PVCs for the minimum of one seal. PVC materials are relatively economical. They may be processed with ease, and are highly resistant to fuels, especially also to diesel fuels. Moreover, the elasticity and softness of the PVC materials may be adjusted within wide limits by resorting to plasticizers. Consequently the properties of the minimum of one seal may be individually matched also to requirements set by the geometry of the fuel filler housing.
[9] Employing a relatively hard PVC for the housing body also offers a economical and highly resistant alternative to the conventional fiber-reinforced PP materials. Where desirable, the strength of the relatively hard PVC also may be adjusted by a controlled use of plasticizers.
[10] The two-component injection molding procedure is especially advantageously applicable in combination with the PVCs used in the manner of the invention as regards both the housing body and the minimum of one injection molded attached seal. The two PVC materials containing the same basic polymers, they shall be joined to each other in especially tightly linking manner. As a result, in some circumstances, the need for geometrically interlocking anchoring or other reinforcements in the junction's area may be dispensed with.
[11] In one embodiment mode of the present invention, the minimum of one seal is designed to seal off a fuel-tank neck. One more seal is used in a further embodiment mode, sealing off a body component to support the fuel filler housing. In this latter embodiment mode, the entire fuel filler housing inclusive the two seals may be integrally manufactured by injection molding.
[12] In a particular embodiment mode of the present invention, a hinge arm made of a comparatively hard PVC is configured at the housing body and may be joined to fuel- tank flap. Advantageously the relatively hard PVC evinces advantageous mechanical properties applicable to said hinge arm as well. The hinge arm may be pivotable and also be made by injection molding.
[13] In another embodiment mode of the present invention, a PVC fuel-tank flap, in particular a relatively hard PVC fuel-tank flap, is configured on the said hinge arm. In the design comprising both hinge arm and fuel-tank flap, the fuel filler housing constitutes a compact module allowing especially simple configuration into the motor- vehicle body.
[14] The present invention is elucidated below in relation to the appended Figure.
[15] This single Fig. 1 is much simplified schematic cross-section of a fuel filler housing inserted into the motor- vehicle body and fitted with fuel-tank neck.
[16] The fuel filler housing consists of a tub-shaped or pot-like housing body 10 made of a comparatively hard PVC. The fuel filler housing is made by two-component injection molding, said body 10 being injection-molded first. Next a first seal 12 sealing off the fuel-tank neck 14 is injection-molded onto the body 10. Preferably the further seal 16 sealing off the motor- vehicle body 18 indicated in the Figure is injection-molded onto the body 10 in the same operational step.
[17] The segment of the motor- vehicle body 18 is part of the vehicle's outer skin. The fuel-tank neck 14 is connected by a fuel conduit to the fuel-tank. Said neck may be sealed for instance by a screw or valve seal not shown in the Figure.
[18] The Figure of the present invention also shows a fuel-tank flap 20 covering the entire fuel filler housing 20. Preferably the fuel-tank flap 20 is pivotably connected by an omitted hinge arm configured at the housing body 10 to said fuel filler housing.
[19] The seal 12 is conical and slants relative to the wall of the fuel-tank neck 14. As a result, in the course of assembly, the fuel filler housing may be very easily slipped onto the said neck 14 and effect very good sealing. Moreover the conical seal 12 is able to absorb vibrations between the vehicle body 18 and the fuel-tank neck 14 and may compensate any manufacturing tolerances without thereby degrading sealing. Again, the seal may assume a complex shape including at least one conical segment.
[20] Further features of the fuel filler housing of the present invention are omitted from the appended Figure, for instance snap-in elements at the housing body to lock said fuel filler housing to the vehicle body or a fuel-tank flap locking mechanism connected to the central locking mechanism.

Claims

Claims
[Claim 1] A fuel filler housing comprising a housing body (10) that is made of a relatively hard material and at least one seal (12, 16) which is made of a relatively soft material and is injected onto said housing body by means of two-component injection molding and which seals off a motor vehicle component (14, 18), characterized in that said relatively hard material is a relatively hard polyvinyl chloride (PVC) and the relatively soft material is as relatively soft polyvinylchloride (PVC).
[Claim 2] Fuel filler housing as claimed in claim 1, characterized in that the minimum of one seal (12) is designed to seal off the fuel-tank neck (14).
[Claim 3] Fuel filler housing as claimed in either of claims 1 or 2, characterized in that a further seal (16) sealing off a motor- vehicle component (18) can be affixed to the said housing body.
[Claim 4] Fuel filler housing as claimed in one of claims 1 through 3, characterized in that the housing body (10) is fitted with a hinge arm made of the relatively hard PVC and that a fuel-tank flap (20) is affixable to said arm.
[Claim 5] Fuel filler housing as claimed in claim 4, characterized in that a PVC fuel-tank flap (20) is mounted on the hinge arm.
PCT/IB2009/053925 2008-09-20 2009-09-08 A fuel filler housing for engine driven vehicles WO2010032160A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09787137A EP2349770A1 (en) 2008-09-20 2009-09-08 A fuel filler housing for engine driven vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810048132 DE102008048132B4 (en) 2008-09-20 2008-09-20 Tank recess for motor vehicles
DE102008048132.7 2008-09-20

Publications (1)

Publication Number Publication Date
WO2010032160A1 true WO2010032160A1 (en) 2010-03-25

Family

ID=41394070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/053925 WO2010032160A1 (en) 2008-09-20 2009-09-08 A fuel filler housing for engine driven vehicles

Country Status (3)

Country Link
EP (1) EP2349770A1 (en)
DE (1) DE102008048132B4 (en)
WO (1) WO2010032160A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012071124A3 (en) * 2010-11-23 2012-10-11 Illinois Tool Works Inc. Integrated floating overmolded snap-ring and seal for a plastic fuel housing assembly
WO2015076898A1 (en) * 2013-11-19 2015-05-28 Illinois Tool Works Inc. A fuel filler assembly for a vehicle
WO2017178373A1 (en) * 2016-04-11 2017-10-19 Bayerische Motoren Werke Aktiengesellschaft Charging connection module for a vehicle
JPWO2021048952A1 (en) * 2019-09-11 2021-03-18

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH707598B1 (en) * 2013-02-04 2016-10-14 Schwanden Kunststoff Electrical connection for an electric or hybrid vehicle.
DE102019118910A1 (en) * 2019-06-11 2020-12-17 Dr. Schneider Kunststoffwerke Gmbh Tank and / or charging module

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2080315A5 (en) * 1970-02-26 1971-11-12 Rehau Plastiks
DE3239765A1 (en) * 1982-10-27 1984-05-03 Walter Klein GmbH & Co. KG, 5600 Wuppertal Two-component injection moulding process for manufacturing plastic strips, covers and the like
JPH06134801A (en) * 1992-10-29 1994-05-17 Toyoda Gosei Co Ltd Molding method for inlet shield
EP0990548A2 (en) * 1998-09-30 2000-04-05 Volkswagen Aktiengesellschaft Tank inlet cover assembly
DE10026841A1 (en) * 2000-05-30 2001-12-06 Euwe Eugen Wexler Gmbh Tank flap-filler neck bowl module for motor vehicles on outer side has locking device releasable by hand or by unlocking element and fixes module in body opening
EP1332979A1 (en) * 2002-01-22 2003-08-06 Toyoda Gosei Co., Ltd. Cap device
EP1571029A2 (en) * 2004-03-03 2005-09-07 ITW Automotive Products GmbH & Co. KG Fuel door housing for automobiles
EP1657097A1 (en) * 2004-11-16 2006-05-17 Maier, S. Coop. Body of a fuel cap unit fitted to the fuel pipe, and its production processes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147627T3 (en) * 1995-04-05 2000-09-16 Volkswagen Ag BOWL SHAPED BODY.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2080315A5 (en) * 1970-02-26 1971-11-12 Rehau Plastiks
DE3239765A1 (en) * 1982-10-27 1984-05-03 Walter Klein GmbH & Co. KG, 5600 Wuppertal Two-component injection moulding process for manufacturing plastic strips, covers and the like
JPH06134801A (en) * 1992-10-29 1994-05-17 Toyoda Gosei Co Ltd Molding method for inlet shield
EP0990548A2 (en) * 1998-09-30 2000-04-05 Volkswagen Aktiengesellschaft Tank inlet cover assembly
DE10026841A1 (en) * 2000-05-30 2001-12-06 Euwe Eugen Wexler Gmbh Tank flap-filler neck bowl module for motor vehicles on outer side has locking device releasable by hand or by unlocking element and fixes module in body opening
EP1332979A1 (en) * 2002-01-22 2003-08-06 Toyoda Gosei Co., Ltd. Cap device
EP1571029A2 (en) * 2004-03-03 2005-09-07 ITW Automotive Products GmbH & Co. KG Fuel door housing for automobiles
EP1657097A1 (en) * 2004-11-16 2006-05-17 Maier, S. Coop. Body of a fuel cap unit fitted to the fuel pipe, and its production processes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012071124A3 (en) * 2010-11-23 2012-10-11 Illinois Tool Works Inc. Integrated floating overmolded snap-ring and seal for a plastic fuel housing assembly
US8955899B2 (en) 2010-11-23 2015-02-17 Illinois Tool Works Inc. Integrated floating overmolded snap-ring and seal for a plastic fuel housing assembly
WO2015076898A1 (en) * 2013-11-19 2015-05-28 Illinois Tool Works Inc. A fuel filler assembly for a vehicle
WO2017178373A1 (en) * 2016-04-11 2017-10-19 Bayerische Motoren Werke Aktiengesellschaft Charging connection module for a vehicle
US11065971B2 (en) 2016-04-11 2021-07-20 Bayerische Motoren Werke Aktiengesellschaft Charging connection module for a vehicle
JPWO2021048952A1 (en) * 2019-09-11 2021-03-18
WO2021048952A1 (en) * 2019-09-11 2021-03-18 日産自動車株式会社 Vehicle fuel supply or charging port structure
JP7188607B2 (en) 2019-09-11 2022-12-13 日産自動車株式会社 Port structure for vehicle fuel supply or charging

Also Published As

Publication number Publication date
DE102008048132A1 (en) 2010-04-01
DE102008048132B4 (en) 2012-08-16
EP2349770A1 (en) 2011-08-03

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