EP2017462B1 - Procédé et appareil pour nettoyer une ligne de fluide - Google Patents

Procédé et appareil pour nettoyer une ligne de fluide Download PDF

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Publication number
EP2017462B1
EP2017462B1 EP07110767A EP07110767A EP2017462B1 EP 2017462 B1 EP2017462 B1 EP 2017462B1 EP 07110767 A EP07110767 A EP 07110767A EP 07110767 A EP07110767 A EP 07110767A EP 2017462 B1 EP2017462 B1 EP 2017462B1
Authority
EP
European Patent Office
Prior art keywords
bypass
fuel
closure element
line
pressure pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP07110767A
Other languages
German (de)
English (en)
Other versions
EP2017462A1 (fr
Inventor
Steffen Schönfuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to DE502007004018T priority Critical patent/DE502007004018D1/de
Priority to EP07110767A priority patent/EP2017462B1/fr
Publication of EP2017462A1 publication Critical patent/EP2017462A1/fr
Application granted granted Critical
Publication of EP2017462B1 publication Critical patent/EP2017462B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M37/22—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
    • F02M37/36—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 bypass 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0035—Thermo sensitive valves
    • 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
    • F02M37/34—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 by the filter structure, e.g. honeycomb, mesh or fibrous

Definitions

  • the invention relates to a method for cleaning at least a portion of a medium line of an internal combustion engine.
  • the invention also relates to a device for carrying out the method.
  • the EP 1 826 393 A1 relates to a fluid system, in particular fuel system of an internal combustion engine, which has at least one pipe, a liquid filter and a clean line.
  • the clean line is connected on the one hand with the liquid filter and on the other hand with a consumer corresponding.
  • the clean line has a line filter with a housing and a filter insert, which filters out the impurities contained in the clean line from the liquid.
  • the filter insert is removable after removing the impurities from the flow cross-section of the clean line.
  • the clean line or the housing can be opened and then closed again, which can be performed by a specialist workshop.
  • the WO 2004/020816 deals with a fuel injection device for an internal combustion engine with a high-pressure pump.
  • An inflow of fuel from a feed pump to a fuel metering device and / or to a bypass connection is effected by at least one channel in a housing part.
  • At least one fuel filter is arranged in the at least one channel upstream of the fuel metering device and / or the bypass connection.
  • the EP 1 136 689 A2 discloses a conveyor for conveying fuel from a fuel tank to an internal combustion engine of a motor vehicle with a feed pump and with a supply line connected to the feed line, in which a fuel filter is arranged.
  • the feed line has a bypass line routed past the fuel filter.
  • the 36 31 579 C1 deals with a low-pressure fuel cycle with fuel preheating.
  • a fine filter bypass is arranged bypassing, wherein a pressure relief valve is provided which opens as a result of paraffin formation resulting maximum pressure.
  • a fuel filter assembly having a filter housing with a fuel filter disposed therein.
  • the filter housing is separated into a clean side and a raw side.
  • the filter housing has an outlet connection in the region of the clean side and an inlet connection in the region of the raw side.
  • a pressure-dependent opening and closing bypass valve is provided in the area between the raw side and the outlet connection.
  • the W02007 / 031120 relates to a pressure valve for a fuel injection device.
  • the pressure valve is mounted together with a throttle and a fuel filter in a valve unit mountable as a unit in a bypass line.
  • Medium lines such as or fuel lines of an internal combustion engine are production-related often manufacturing residues, such as chips or the like.
  • the medium lines or the low-pressure side of the high-pressure pump fuel lines are flushed before their installation on the internal combustion engine by means of a cleaning liquid and cleaned.
  • Isopropanol is currently used as cleaning fluid. This purging is required for all the vacuum side fuel lines which are arranged between the main filter and the high pressure pump.
  • the known cleaning method depending on the number and length of the fuel line, very expensive and must be performed to avoid additional contamination in a special clean room.
  • the transport of the medium lines or fuel lines to and from the clean room increases the cost in addition.
  • the invention has the object to improve a method and an apparatus of the type mentioned above so that the aforementioned disadvantages are repealed.
  • the invention is based on the idea that when starting an internal combustion engine, the passage of a fuel through a medium line any impurities and / or contaminants removed from this medium line. Subsequent filtering prevents impurities / contaminants from being carried on with the fuel. The medium line is cleaned in this way. After some time / duration of operation, the filtering can be deactivated, since then usually all impurities / contaminants are washed out of the medium line.
  • the fuel such as fuel such. B. diesel
  • the filter element By means of the bypass according to the invention, the fuel, such as fuel such. B. diesel, which entrains the impurities in the at least one portion of the medium line and transported through the bypass to the filter element, filtered so that z. B. manufacturing residues z. B. can not get into a high-pressure pump, but are collected by the filter element.
  • the at least one section of the medium line, preferably the fuel or diesel line from the fuel tank to the high pressure pump can be sufficiently cleaned of the manufacturing residues, without the costly cleaning measures must be performed in clean rooms.
  • the life of the high-pressure pump according to the known cleaning with cleaning media such. B. Isopropanol is secured.
  • the cleaning process is preferably carried out by the manufacturer.
  • fuel z. B. diesel from a central tank filled in the fuel tank of the motor vehicle.
  • the fuel or diesel has a relatively low temperature of about 20 ° C.
  • the fuel heats up to a higher temperature, for example 80 ° C., due to friction and the compression of the fuel in a fuel pump.
  • This effect is advantageously exploited by using a thermovalve responsive to the temperature change as the closure element.
  • the closure member or thermal valve remains in a bypass opening position (use position).
  • the bypass is opened after the first start of the internal combustion engine, and shut off the vacuum-side input to the high-pressure pump.
  • the fuel is forced to flow through the bypass and transport the entrained production residues to the filter element, in which they are collected.
  • the fuel is subject to a suction pressure generated by the internal combustion engine and flows at a flow rate of, for example, 120 l / h. If the fuel or diesel reaches the operating temperature of the closure element or of the thermal valve after a sufficient time, the bypass is closed and the vacuum-side inlet to the high-pressure pump is opened.
  • the bypass remains permanently closed, so that the fuel can flow through the bypass or through the filter element into the high-pressure pump.
  • the filter element there is thus a temporary filter element, the only function of which is to collect production residues from the exemplary (vacuum-side) fuel line.
  • the exemplary (vacuum side) fuel line can be installed or mounted on the internal combustion engine, and be cleaned with the inventive method in the installed on the engine position of the manufacturing residues, without cleaning before installation is necessary.
  • the object is also achieved by a device for cleaning at least a portion of a medium line of an internal combustion engine with the features of claim 3.
  • the medium line or fuel line is a closable by means of a closure element bypass, in which a filter element is arranged, assigned such that fuel from the at least a portion of the medium line after a first start of the engine flows through the bypass, the bypass permanently closed is when the at least a portion of the medium line is cleaned.
  • the closure element is expediently designed as a thermal valve, wherein the bypass in the flow direction of the fuel or fuel z.
  • B. Diesel for example, between the actual fuel filter and the internal combustion engine, preferably a high-pressure pump is arranged immediately.
  • the high pressure pump has a negative pressure side and a positive pressure side.
  • Overpressure-side fuel lines or the high-pressure pump itself are cleaned of manufacturing residues prior to installation on the internal combustion engine.
  • vacuum-side fuel lines can be cleaned with the proposed device and the method according to the invention.
  • the bypass is therefore with its input side of the vacuum side and with his Output branch arranged on the pressure side, so that the high-pressure pump is bypassed.
  • the closure element is arranged on the input side of the bypass. It is also possible that the closure element is arranged in a flow channel between the input side and the corresponding output port in the medium line.
  • the filter element is expediently arranged between the closure element and the outlet port in the bypass, that is, as seen in the flow direction of the fuel or fuel expedient behind the closure element. It is also possible to provide a flap element in front of the exit orifice, preferably a non-return flap, in order to avoid that the bypass is opened in the event of an unexpected failure of the closure element.
  • the filter element is designed in a preferred embodiment as a so-called disk filter, which holds the manufacturing residues in the flow direction.
  • the filter element is not limited to this embodiment, but can be selected in any suitable embodiment, provided that the manufacturing residues can be sufficiently collected and recorded.
  • the filter element should not replace the actual fuel filter, which is to filter impurities of the fuel or diesel; Because the bypass is open only temporarily after a first start of the engine until the fuel has reached the operating temperature of the closure element and then permanently closed. This can, however, be carried out a cleaning, for example, based on the high pressure pump vacuum side fuel line after installation on the engine.
  • FIG. 1 shows in principle an internal combustion engine 1 with a medium line 2.
  • the medium line 2 is designed as a fuel line, and is hereinafter referred to as such.
  • the fuel line 2 has a closable by means of a closure element 3 by-pass 4.
  • a filter element 6 is arranged in the bypass 4.
  • fuel such as diesel
  • the fuel line 2 takes on manufacturing residues (chips or the like) and transports them through the bypass 4 to the filter element 6.
  • manufacturing residues are collected and permanently detained.
  • the bypass 4 is executed in the illustrated embodiment in longitudinal section seen U-shaped.
  • the bypass 4 has an input side 7 and a corresponding output port 8 connected to the fuel line 2.
  • the bypass 4 runs on the input side with its input branch 9 initially oriented perpendicularly away from the fuel line 2, and merges into a parallel to the fuel line 2 flow section 11.
  • the flow section 11 merges into an outlet branch 12, which is oriented in the direction of the fuel line 2 and opens with its outlet opening 8 in this.
  • the bypass 4 may be implemented in any other suitable embodiment.
  • the bypass 4 could be seen in longitudinal section cut horseshoe-shaped with a curved flow section.
  • the closure element 3 is arranged on the input side. In the in FIG. 1 shown position, the closure element 3 is in a bypass 4 opening position (use position), so that fuel, for example diesel flows through the bypass 4 and the filter element 6 in the direction of the outlet port 8. The flow direction is shown by the arrows 13.
  • the filter element 6 is arranged in the flow direction of the fuel (arrow 13) behind the closure element 3.
  • FIG. 1 is exemplified a common rail line of a diesel engine with a high-pressure pump, not shown.
  • the high pressure pump not shown, has a negative pressure side and a positive pressure side.
  • the bypass 4 is arranged so that the input side 7 is arranged on the negative pressure side and the output port 8 on the overpressure side.
  • the bypass 4 bypasses the high-pressure pump.
  • the overpressure-side fuel line as seen from the high pressure pump
  • the high-pressure pump itself are already cleaned of manufacturing residues.
  • the filter element 6 so the production residues of at least a portion of the fuel line, preferably the vacuum-side fuel line are collected, without that they can get into the high-pressure pump.
  • the fuel for example diesel is filled from a central tank in the fuel tank of the motor vehicle and has a relatively low temperature of about 20 ° C.
  • the filter element 6 catches the manufacturing residues, so that the vacuum side fuel line is cleaned of them .
  • the closure element 3 is therefore advantageously designed as a thermal valve, which permanently closes the bypass 4, for example, at 70 ° C fuel temperature.
  • the fuel z. B.
  • the bypass 4 remains permanently closed. This condition is in FIG. 2 shown.
  • the closure element 3 in the preferred embodiment as a thermal valve is designed such that it no longer opens after closing the bypass 4, or keeps the bypass 4 permanently closed. In this respect, it is also possible to speak of a temporary bypass 4 or filter element 6, the only function of which is to be seen in the cleaning of the vacuum-side fuel line; because after the fuel line is cleaned of the manufacturing residues, the bypass 4 remains permanently closed.
  • the closure element 3 has a sealing device 14 on the foot side, which bears sealingly against the upper inner wall 16 of the fuel line 2 in the plane of the drawing ( FIG. 2 ).
  • a flap element 17, for example, a non-return valve is arranged in the output branch 12 in the output branch 12.
  • the flap element 17 is arranged in a position permanently closing the output branch 12 when the bypass 4 is permanently closed by means of the closure element 3 or the thermo-valve.
  • the flap member 17 prevents inflow into the bypass 4, in the event that the closure element 3, the bypass 4 should open unexpectedly.
  • the flap element 17 serves as a kind of second closure element or as a securing element. Conveniently, the flap member 17 is permanently fixed in the output branch 12 closing position, for example, locked.
  • closure element 3 is arranged in the flow channel 11, wherein the filter element 6 is arranged in the output branch 12.
  • the closure element 3 closes the bypass 4 and simultaneously opens the entrance to the high-pressure pump.
  • the flap member 17 can of course also in the embodiment according to FIG. 3 be provided.
  • the respective closure element 3 in the FIGS. 1 to 3 should be shown only by way of example, this should be carried out in each case so that on the one hand, a closing of the input side of the high-pressure pump and on the other a permanent closing of the bypass 4 is possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (7)

  1. Procédé pour nettoyer au moins une portion d'une conduite de fluide (2) d'un moteur à combustion interne (1), comprenant les étapes suivantes :
    - guidage d'un liquide de service à travers l'au moins une portion de la conduite de fluide (2) ;
    - filtrage du liquide de service par un élément de filtre (6), qui est disposé dans une dérivation (4), la dérivation (4) pouvant être fermée au moyen d'un élément de fermeture (3) réalisé sous forme de thermovalve ;
    - désactivation du filtrage à partir d'une condition de service déterminée, l'élément de fermeture (3) fermant ainsi de manière durable la dérivation (4) quand le liquide de service atteint pour la première fois la température d'actionnement de l'élément de fermeture (3).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le liquide de service est soumis à une pression d'aspiration produite par le moteur à combustion interne (1), et s'écoule à travers l'élément de filtre (6) disposé dans la dérivation (4) lorsque la dérivation (4) est ouverte.
  3. Dispositif pour nettoyer au moins une portion d'une conduite de fluide (2) d'un moteur à combustion interne (1), comprenant la portion de
    la conduite de fluide et une dérivation (4) pouvant être fermée avec un élément de fermeture (3), dans laquelle un élément de filtre (6) est disposé, la dérivation (4) étant associée à la conduite de fluide (2) de telle sorte que le liquide de service s'écoule hors de l'au moins une portion de la conduite de fluide (2) à travers la dérivation (4), notamment avec un procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément de fermeture (3) est réalisé sous forme de thermovalve de telle sorte que la dérivation (4) soit fermée de manière durable quand le liquide de service atteint pour la première fois la température d'actionnement de l'élément de fermeture (3).
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    l'au moins une portion de la conduite de fluide (2) est disposée du côté de la dépression par rapport à une pompe haute pression.
  5. Dispositif selon la revendication 3 ou 4,
    caractérisé en ce que
    la dérivation (4) est disposée avec son côté d'entrée (7) du côté de la dépression par rapport à une pompe haute pression et avec son côté de sortie du côté de la surpression par rapport à la pompe haute pression, de sorte que la dérivation (4) contourne la pompe haute pression.
  6. Dispositif selon l'une quelconque des revendications 3 à 5,
    caractérisé en ce que
    l'élément de fermeture (3) est associé du côté de l'entrée à la dérivation (4).
  7. Dispositif selon l'une quelconque des revendications 3 à 6,
    caractérisé en ce que
    l'élément de filtre (6) est disposé, vu dans le sens de l'écoulement du liquide de service, derrière l'élément de fermeture (3).
EP07110767A 2007-06-21 2007-06-21 Procédé et appareil pour nettoyer une ligne de fluide Ceased EP2017462B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE502007004018T DE502007004018D1 (de) 2007-06-21 2007-06-21 Verfahren und Vorrichtung zum Reinigen einer Mediumleitung
EP07110767A EP2017462B1 (fr) 2007-06-21 2007-06-21 Procédé et appareil pour nettoyer une ligne de fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07110767A EP2017462B1 (fr) 2007-06-21 2007-06-21 Procédé et appareil pour nettoyer une ligne de fluide

Publications (2)

Publication Number Publication Date
EP2017462A1 EP2017462A1 (fr) 2009-01-21
EP2017462B1 true EP2017462B1 (fr) 2010-06-02

Family

ID=38670803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07110767A Ceased EP2017462B1 (fr) 2007-06-21 2007-06-21 Procédé et appareil pour nettoyer une ligne de fluide

Country Status (2)

Country Link
EP (1) EP2017462B1 (fr)
DE (1) DE502007004018D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007029027B3 (de) * 2007-06-23 2009-01-02 Careng Automotive Gmbh Filter und Verfahren zur Filtration eines Fluids
EP2886844B1 (fr) * 2013-12-17 2018-05-02 TI Automotive (Heidelberg) GmbH Module de conduite de carburant et procédé de fonctionnement d'un module de conduite de carburant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631579C1 (de) * 1986-09-17 1992-02-20 Daimler Benz Ag Niederdruckkraftstoffkreislauf mit Kraftstoffvorwaermung fuer eine luftverdichtende Einspritzbrennkraftmaschine,insbesondere fuer Nutzfahrzeuge
DE10013905A1 (de) 2000-03-21 2001-09-27 Mannesmann Vdo Ag Fördereinrichtung zum Fördern von Kraftstoff
DE10039425A1 (de) * 2000-08-11 2002-02-21 Siemens Ag Filtereinrichtung für einen Hochdruckbereich eines Speichereinspritzsystems für einen Verbrennungsmotor
DE10239429A1 (de) 2002-08-28 2004-03-11 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10317017A1 (de) 2003-04-11 2004-10-21 Mann + Hummel Gmbh Kraftfahrzeug mit einem mit Dieselkraftstoff betriebenen Verbrennungsmotor
DE102005022738A1 (de) 2005-05-18 2006-11-23 Schaeffler Kg Druckventil für eine Kraftstoffeinspritzvorrichtung einer Brennkraftmaschine
DE202006002952U1 (de) 2006-02-22 2007-07-05 Mann + Hummel Gmbh Flüssigkeitssystem

Also Published As

Publication number Publication date
DE502007004018D1 (de) 2010-07-15
EP2017462A1 (fr) 2009-01-21

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