WO2006070221A1 - Filtre de carburant a double action - Google Patents

Filtre de carburant a double action Download PDF

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Publication number
WO2006070221A1
WO2006070221A1 PCT/IB2005/000860 IB2005000860W WO2006070221A1 WO 2006070221 A1 WO2006070221 A1 WO 2006070221A1 IB 2005000860 W IB2005000860 W IB 2005000860W WO 2006070221 A1 WO2006070221 A1 WO 2006070221A1
Authority
WO
WIPO (PCT)
Prior art keywords
conduit
block
compartment
base
fuel
Prior art date
Application number
PCT/IB2005/000860
Other languages
English (en)
Inventor
Mishka Gabay
Original Assignee
Ufi Filters S.P.A.
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 Ufi Filters S.P.A. filed Critical Ufi Filters S.P.A.
Publication of WO2006070221A1 publication Critical patent/WO2006070221A1/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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/18—Heating or cooling the filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/003—Filters in combination with devices for the removal of liquids
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
    • F02M37/26—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means
    • F02M37/28—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means with means activated by the presence of water, e.g. alarms or means for automatic drainage
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/30—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by heating 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/40—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements with means for detection of clogging
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/46—Filters structurally associated with pressure regulators

Definitions

  • the typical fuel (diesel fuel) feed circuit of compression-ignition power units with which medium-light, medium and heavy industrial vehicles are equipped is of complicated construction. From the tank, the fuel is initially fed to a complete pre-filter for high water separation, which because of its dimensions is usually fixed to the vehicle frame.
  • the complete pre-filter is installed in the intake side of the feed circuit, and generally comprises an aluminium support block in which the filling pump, manually operable by the user, is located.
  • An electric heater and a temperature sensor or alternatively a thermostat are usually installed in the support block.
  • the purpose of the pre-filter is to separate the water present in the fuel and to provide coarse filtering of impurities.
  • the pre-filter cartridge is normally made of metal and considering the method of installation is of the so-called "screwable" type.
  • a water presence indicator is inserted into the cartridge base (or metal tray) of the pre-filter via a threaded connection.
  • the pre-filtered fluid fuel (diesel fuel), free of emulsified water by the effect of the pre-filter coalescence action and heated by the electric heater, is drawn by a feed pump.
  • the feed pump of the fuel circuit hence "draws" the fuel (diesel fuel) from the pre-filter and provides it with the energy required for feeding the fine filter unit.
  • the fine filter unit is normally installed on the engine and consists of an aluminium metal block which comprises the seat for a clogging indicator and a fine filter cartridge.
  • the fine filter cartridge generally of screwable type, is made of metal and is connected to the aluminium block by a threaded connection.
  • the object of the present invention is to overcome the drawbacks of the known art by a simple and economical solution.
  • the single filter unit constructed in accordance with the invention, makes it possible to effect the following mutually coordinated operations: separate the dissolved water in intimate emulsion with the fluid fuel (diesel fuel), pre-filter this latter and heat it; control the activation and deactivation of the heater, with consequent limitation of electrical absorption; by installing an electric pump, automatically prime the filter unit installed downstream of the fuel tank (hence under suction); indicate the presence of water separated by coalescence within the collection container, positioned immediately below the pre-filter; effect fine filtering of the fuel (diesel fuel) before its feed into the final part of the feed circuit of the power unit; indicate clogging of the filter cartridge by measuring the pressure drop.
  • Figure 1 is a section through a first embodiment of the invention.
  • Figure 2 is a section through a second embodiment of the invention.
  • Figure 3 is an installation scheme of the second embodiment of the invention.
  • Figure 1 shows a possible embodiment of the device of the invention by way of non-limiting example.
  • the figure shows a block 1 constructed of synthetic material, in which a first compartment 2 and a second compartment 3 are provided.
  • first conduit 4 which connects the side wall of the block to its base
  • second conduit 5 and a third conduit 6 which connect the base of the block to the first compartment 2
  • fourth conduit 7 which connects the base of the block to its outer wall.
  • the first compartment 2 is circular and is closed by a disc 21 from which a skirt 22 descends carrying an elastic membrane 23.
  • the disc 21 presents the seat for a coil 24, the centre of which slidingly receives a rod 25 fixed to the centre of the membrane 23.
  • the compartment 2 is connected to the base of the block 1 by the conduit 5 which is intercepted by a flap valve 51 which opens only towards the interior of the compartment 2.
  • a chamber 26 connected to the compartment 2 by a valve 27 which opens only towards the outside of the compartment 3.
  • the valve 27 comprises a valving element 28 which is maintained closed by a calibrated spring 29 and indicates valve opening to the electronic control system of the invention, contained in the second compartment 3.
  • a resistance heating element 8 which is connected to, and is activated by, the electronic control system located in the second compartment 3.
  • the block 1 lowerly receives, fixed by known means not shown, a cup casing 10 containing the disposable filtering means of the device.
  • the cup casing 10 is closed upperly by a cover 11 which is sealedly coupled to the base of the block 1 , and comprises holes facing respectively the first conduit 4 which connects the side wall of the block to its base, the second conduit 5 and third conduit 6 which connect the base of the block to the first compartment 2, and the fourth conduit 7 which connects the base of the block to its outer wall.
  • the cup casing 10 is sealedly separated into two concentric portions 11 and 12 by a cylindrical wall 13 which encloses the holes facing the first conduit 4 and second conduit 5 respectively.
  • the central portion 11 contains a cylindrical baffle 14, of a material favouring coalescence, which separates the holes facing the conduits 4 and 5, and is closed at its base by a sealed wall 14 spaced from the base of the cup casing 10.
  • a collection chamber 15 which opens to the outside of the casing via a conduit 16 closed by a cock 17.
  • cylindrical wall 13 In proximity to the base of the casing 10 the cylindrical wall 13 carries an annular flange 18 which sealedly supports a cylindrical fine filtering baffle
  • a level sensor 111 connected to the device control system is present at the base of the central portion 11.
  • a temperature sensor 41 is located in the first conduit 4 and connected to the device electronic control system.
  • the second compartment 3 contains an electronic card 31 which receives signals from the valve 27, from the level sensor 111 and from the temperature sensor 41.
  • the card is connected to the terminal strip 312, to be connected in its turn to signal processor means and actuator means present on the vehicle.
  • the terminal strip 312 also presents the power terminals for the resistance element 28.
  • the complete filter unit constructed in the aforesaid manner and installed on the power unit, operates in the following manner.
  • the conduit 4 of the block 1 is connected to the fuel tank, not shown in the figures.
  • the fluid fuel flow strikes the temperature sensor 41 or thermostat (in the simplified version), which activates the resistance heater 8 on the basis of the measured temperature.
  • the electronic control system activates the heater, which transfers heat to the fluid fuel flow (diesel fuel) to hence dissolve any paraffin grains contained therein and formed by the effect of low temperature. If the temperature of the fluid fuel (diesel fuel) flowing towards the pre- filter region measured by the sensor is greater then zero degrees centigrade, the heater controlled by the thermostat does not operate.
  • the fuel flow (diesel fuel) undergoes a first filtration stage with relative separation of water by coalescence in the central portion 11 in which it passes through the filtering baffle 14 which separates the water by coalescence.
  • the fuel is drawn into the compartment 2 through the conduit 5 by the electric filling pump consisting of the membrane 23 driven by the coil 24 via the rod 25.
  • the pump delivery valve 27 remains closed, whereas during the pump delivery stage its intake valve 51 remains closed.
  • the filling pump can be of membrane type operated by a solenoid, as shown, or by a DC motor. It is powered electrically and can be controlled automatically by the control system or manually by a branch (switch and/or pushbutton) on the instrument panel, to prevent formation of air bubbles in the power unit feed circuit.
  • the clogging sensor consisting substantially of the valving element warns the final user when a threshold value is exceeded, beyond which the filtering system must be replaced.
  • the single multi-pin electrical connection 312 powers the electronic circuit of the filling pump heater, the temperature sensor or thermostat, the water presence sensor and finally the clogging sensor.
  • Figures 2 and 3 show a second embodiment in which the elements corresponding to those of Figure 1 are indicated by the same reference numerals. The second embodiment differs from the first essentially in that the portions 11 and 12 are not connected together by conduits provided in the block 2, as in the first embodiment, but by external conduits not visible in Figure 2. In addition, the fuel passage direction through the filtering baffle 19 is reversed.
  • the block 100 of Figure 2 presents a first conduit 400 which connects the base of the block and, via this latter, the filtered fuel collection compartment 120 to the outside.
  • the fuel passes radially from the outside (compartment 12) to the inside of the filtering baffle 19.
  • the conduit 6 positioned downstream of the valving element 28 communicates with the outside of the block via the conduit 60, instead of with the compartment 120, which in this case is the fuel entry compartment to the filtering baffle 19.
  • the heating element 29 is positioned about the conduit 70, instead of upstream of the conduit 6.
  • the fuel enters the compartment 11 positioned upstream of the filtering baffle 14 of the pre-filter, passes through the baffle 14 then via the conduit 5 passes into the compartment 21 containing the membrane 23 of the priming pump; then from there it returns to the outside through the conduits 6 and 60.
  • the conduit 60 is connected to a conduit 600 along which there are connected in series a further heater element 601 and a circulation pump 602 at 5 bar, from which the fuel, via the conduit 600, reaches the conduit 70 which feeds it into the compartment 12, which in this case collects the fuel to be filtered.
  • the fuel passes through the filtering baffle 19 and is discharged to the outside via the conduit 400, which is connected to the engine circuit, not shown.
  • the water is separated by the baffle 19 by coalescence, the water collecting at the base of the compartment 12 instead of at the base of the compartment 11 as in the first embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

Filtre de carburant à double action composé d'un bloc (1) contenant une pompe d'amorçage de carburant (21-25), d'un premier conduit (4) accouplant la base de ce bloc (1) au réservoir de carburant, d'un deuxième (5) et d'un troisième (6) conduit accouplant la base du bloc (1) au carter (2) de la pompe d'amorçage (21-25), et d'un quatrième conduit (7) accouplant la base du bloc (1) au conduit d'alimentation moteur, un carter évasé (10) étant fixé à la base du bloc (1) et contenant deux éléments filtrants concentriques séparés (14, 19) auxquels sont accouplées des chicanes toroïdales en série par l'intermédiaire dudit deuxième (5) et troisième conduit (6) du bloc (1) et communiquant avec le premier (4) et quatrième conduit (7) respectifs de ce bloc.
PCT/IB2005/000860 2004-12-27 2005-04-04 Filtre de carburant a double action WO2006070221A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE2004A000158 2004-12-27
IT000158A ITRE20040158A1 (it) 2004-12-27 2004-12-27 Gruppo filtrante a doppia azione per carburante

Publications (1)

Publication Number Publication Date
WO2006070221A1 true WO2006070221A1 (fr) 2006-07-06

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ID=34970685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/000860 WO2006070221A1 (fr) 2004-12-27 2005-04-04 Filtre de carburant a double action

Country Status (2)

Country Link
IT (1) ITRE20040158A1 (fr)
WO (1) WO2006070221A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007092321A2 (fr) * 2006-02-07 2007-08-16 Donaldson Company, Inc. Dispositif de filtration et procédés
WO2007110049A1 (fr) * 2006-03-20 2007-10-04 Hengst Gmbh & Co. Kg Élément de filtration avec fermeture pour deuxième chambre de filtration
WO2009000938A2 (fr) * 2008-06-23 2008-12-31 Ufi Innovation Center S.R.L. Filtre à carburant
EP2364197A2 (fr) * 2008-10-10 2011-09-14 Surgiquest, Inc. Système de filtration à trajets d écoulement multiples
EP2451554A1 (fr) * 2009-07-06 2012-05-16 UFI Filters S.p.A. Groupe de filtration perfectionné pour moteurs à combustion interne diesel comprenant un dispositif de chauffage
CN103527370A (zh) * 2013-10-30 2014-01-22 温州职业技术学院 一种汽车燃油滤清器的滤芯
CN104763565A (zh) * 2015-03-06 2015-07-08 广西华原过滤系统股份有限公司 一种新型两级串联燃油过滤系统
DE102015003164A1 (de) 2015-03-13 2016-09-15 Mann + Hummel Gmbh Kraftstofffiltereinsatz mit einem Vor-und einem Hauptfilterelement sowie Kraftstoffilter
DE102015003165A1 (de) 2015-03-13 2016-09-15 Mann + Hummel Gmbh Kraftstofffilter mit einem Kraftstofffiltereinsatz mit einem Vor- und einem Hauptfilterelement
DE102015003162A1 (de) 2015-03-13 2016-09-15 Mann + Hummel Gmbh Kraftstofffiltereinsatz mit einem Vor- und einem Hauptfilterelement sowie Kraftstofffilter
WO2016146424A1 (fr) 2015-03-13 2016-09-22 Mann+Hummel Gmbh Cartouche de filtre à carburant et filtre à carburant comprenant un élément de préfiltrage et un élément de filtrage principal ainsi qu'une unité de séparation d'eau

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115305A (en) * 1982-02-24 1983-09-07 Racor Industries Inc Fuel filter
US4626348A (en) * 1984-06-29 1986-12-02 Parker-Hannifin Corporation End cap which will accommodate flow reversal
US5922199A (en) * 1993-09-15 1999-07-13 Parker Hannifin Corporation Double pass fuel filter assembly
US6029633A (en) * 1998-07-02 2000-02-29 Parr Manufacturing, Inc. Passive fuel delivery module and suspension mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115305A (en) * 1982-02-24 1983-09-07 Racor Industries Inc Fuel filter
US4626348A (en) * 1984-06-29 1986-12-02 Parker-Hannifin Corporation End cap which will accommodate flow reversal
US5922199A (en) * 1993-09-15 1999-07-13 Parker Hannifin Corporation Double pass fuel filter assembly
US6029633A (en) * 1998-07-02 2000-02-29 Parr Manufacturing, Inc. Passive fuel delivery module and suspension mechanism

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007092321A2 (fr) * 2006-02-07 2007-08-16 Donaldson Company, Inc. Dispositif de filtration et procédés
WO2007092321A3 (fr) * 2006-02-07 2007-10-18 Donaldson Co Inc Dispositif de filtration et procédés
WO2007110049A1 (fr) * 2006-03-20 2007-10-04 Hengst Gmbh & Co. Kg Élément de filtration avec fermeture pour deuxième chambre de filtration
WO2009000938A2 (fr) * 2008-06-23 2008-12-31 Ufi Innovation Center S.R.L. Filtre à carburant
WO2009000938A3 (fr) * 2008-06-23 2009-06-18 Ufi Innovation Ct Srl Filtre à carburant
CN102132028A (zh) * 2008-06-23 2011-07-20 Ufi发明中心有限公司 一种燃料过滤器
EP2364197A2 (fr) * 2008-10-10 2011-09-14 Surgiquest, Inc. Système de filtration à trajets d écoulement multiples
EP2364197A4 (fr) * 2008-10-10 2012-06-13 Surgiquest Inc Système de filtration à trajets d écoulement multiples
EP2451554A1 (fr) * 2009-07-06 2012-05-16 UFI Filters S.p.A. Groupe de filtration perfectionné pour moteurs à combustion interne diesel comprenant un dispositif de chauffage
CN103527370A (zh) * 2013-10-30 2014-01-22 温州职业技术学院 一种汽车燃油滤清器的滤芯
CN104763565A (zh) * 2015-03-06 2015-07-08 广西华原过滤系统股份有限公司 一种新型两级串联燃油过滤系统
DE102015003164A1 (de) 2015-03-13 2016-09-15 Mann + Hummel Gmbh Kraftstofffiltereinsatz mit einem Vor-und einem Hauptfilterelement sowie Kraftstoffilter
DE102015003165A1 (de) 2015-03-13 2016-09-15 Mann + Hummel Gmbh Kraftstofffilter mit einem Kraftstofffiltereinsatz mit einem Vor- und einem Hauptfilterelement
DE102015003162A1 (de) 2015-03-13 2016-09-15 Mann + Hummel Gmbh Kraftstofffiltereinsatz mit einem Vor- und einem Hauptfilterelement sowie Kraftstofffilter
WO2016146424A1 (fr) 2015-03-13 2016-09-22 Mann+Hummel Gmbh Cartouche de filtre à carburant et filtre à carburant comprenant un élément de préfiltrage et un élément de filtrage principal ainsi qu'une unité de séparation d'eau
WO2016146426A1 (fr) 2015-03-13 2016-09-22 Mann+Hummel Gmbh Cartouche filtrante pour carburant comprenant un élément de filtration préalable et un élément de filtration principale et filtre à carburant
WO2016146413A1 (fr) 2015-03-13 2016-09-22 Mann+Hummel Gmbh Filtre de carburant comprenant une cartouche filtrante de carburant pourvue d'un pré-filtre et d'un élément filtrant principal
DE102015003163A1 (de) 2015-03-13 2016-09-29 Mann + Hummel Gmbh Kraftstofffiltereinsatz und Kraftstofffilter mit einem Vor- und einem Hauptfilterelement sowie mit einer Wasserabscheideeinheit
US10240565B2 (en) 2015-03-13 2019-03-26 Mann+Hummel Gmbh Fuel filter insert having a pre- and a main filter element, and a fuel filter
US10668410B2 (en) 2015-03-13 2020-06-02 Mann+Hummel Gmbh Fuel filter comprising a fuel filter insert with a prefilter element and a main filter element
US10765977B2 (en) 2015-03-13 2020-09-08 Mann+Hummel Gmbh Fuel filter insert, and fuel filter comprising a prefilter element and a main filter element and comprising a water separating unit
US10773190B2 (en) 2015-03-13 2020-09-15 Mann+Hummel Gmbh Fuel filter insert with a prefilter and a main filter element, and fuel filter
DE112016001185B4 (de) 2015-03-13 2023-06-22 Mann+Hummel Gmbh Kraftstofffiltereinsatz mit einem Vor- und einem Hauptfilterelement sowie Kraftstofffilter

Also Published As

Publication number Publication date
ITRE20040158A1 (it) 2005-03-27

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