EP2309116A1 - Filtre à carburant pour une soupape d'injection de carburant - Google Patents

Filtre à carburant pour une soupape d'injection de carburant Download PDF

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Publication number
EP2309116A1
EP2309116A1 EP10177848A EP10177848A EP2309116A1 EP 2309116 A1 EP2309116 A1 EP 2309116A1 EP 10177848 A EP10177848 A EP 10177848A EP 10177848 A EP10177848 A EP 10177848A EP 2309116 A1 EP2309116 A1 EP 2309116A1
Authority
EP
European Patent Office
Prior art keywords
fuel
filter
injection valve
bore
filter body
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.)
Withdrawn
Application number
EP10177848A
Other languages
German (de)
English (en)
Inventor
Dietmar Uhlmann
Giovanni Ferraro
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2309116A1 publication Critical patent/EP2309116A1/fr
Withdrawn legal-status Critical Current

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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting

Definitions

  • the invention relates to a fuel filter for a fuel injection valve according to the preamble of claim 1.
  • Such a fuel filter is from the DE 19832940 A1 known. It has an elongated filter body, at the two end regions of each clamping portions are formed, which form a press connection with a bore in the fuel injection valve.
  • the known fuel filter has by its elongated filter body on a relatively large size. Further, the passage openings in the filter body are arranged such that the fuel when flowing through the filter body must also flow through them in the radial direction, so that a relatively high flow resistance is present.
  • a fuel filter with an elongated filter body is known, which is arranged interchangeably in the bore of a fuel injection valve.
  • an additional securing element is provided which prevents falling out of the fuel filter from the bore of the fuel injection valve. Due to the additional component, a relatively complicated assembly and a relatively complicated production of the bore in the fuel injection valve are required.
  • the present invention seeks to provide a fuel filter for a fuel injection valve after the Prerequisite of claim 1 such that it has a small flow resistance in a compact size and at the same time requires a relatively simple production or simply formed bore in the fuel injection valve.
  • This object is achieved in a fuel filter for a fuel injection valve having the features of claim 1.
  • the invention is based on the idea to arrange the passage openings in a bottom region of the filter body, wherein these extend at least substantially in the axial direction of the bore. As a result, a relatively low flow resistance can be achieved when flowing through the fuel through the fuel filter.
  • the through holes are arranged in a radially inner region of the filter body and that the filter body has in a radially outer region at least one clamping element which is arranged on the insertion of the fuel filter into the bore facing side of the filter body.
  • the passage openings are formed by a laser processing.
  • the laser processing virtually any small through-openings can be produced in an economical manner in high numbers without costly reworking of the through-openings.
  • the at least one clamping element to provide a plurality, preferably at equal angular intervals to each other arranged holding webs which are resiliently arranged on the filter body, projecting radially on the side facing away from the bottom region over the bottom area to the outside and in the unloaded state form an outer diameter of the filter body, which is larger than the diameter of the bore of the fuel injection valve.
  • the holding webs on the opposite side of the passage openings have radially inwardly projecting retaining shoulders for a stripper.
  • the formation of the retaining shoulders is preferably carried out by bending over portions of the retaining webs in the direction of the bottom region.
  • the holding webs on the bottom portion of the filter body opposite side bearing surfaces, which are arranged perpendicular to the longitudinal axis of the bore.
  • the filter body in the bottom region has an insertion bevel for inserting the filter body in the bore of the fuel injection valve.
  • a fuel injection valve with a fuel filter according to the invention is relatively inexpensive to produce, since the bore for receiving the fuel filter can be relatively simple. Furthermore, the bore may have a relatively small length, so that it also results in a particularly compact fuel injection valve.
  • a section of a fuel injection valve 1 is shown in longitudinal section.
  • the fuel injection valve 1 is in particular an injection valve, as provided in gasoline or diesel injection systems in motor vehicles.
  • the fuel injection valve 1 has an obliquely formed to the longitudinal axis 6 bore 2.
  • the bore 2 has a conical insertion region 3 and a step 4.
  • a fuel filter 10 according to the invention can be pressed into the cylindrical bore section 5 formed between the insertion region 3 and the step 4.
  • the filter body of the fuel filter 10 has an approximately disc-shaped or cup-shaped bottom portion 11.
  • a plurality of through holes 12 are formed in the radially inner region of the bottom portion 11.
  • the through holes 12 extend at least substantially in the direction of the longitudinal axis 6 of the bore 2 in the fuel injection valve 1 and perpendicular to the bottom portion 11.
  • the through holes 12 are preferably made by laser radiation and have a diameter of 40 .mu.m to 60 .mu.m, preferably of about 50 microns on.
  • the bottom portion 11 protrude at the radially outer region on the upper side in the longitudinal direction extending three, each offset by 120 degrees to each other arranged holding webs 13 from.
  • the cross-sectionally substantially rectangular support webs 13 are in this case, as in particular from Fig. 3 can be seen, by an angle ⁇ , which is greater than 90 degrees, in particular 93 degrees, elastically resiliently arranged to the bottom portion 11. Due to this arrangement, the fuel filter 10 on the bottom portion 11 opposite side of the holding webs 13 its largest outer diameter, which is greater than the diameter of the bore 2 in the fuel injection valve 1 in the radially unloaded state of the holding webs.
  • the bottom portion 11 of the fuel filter 10 opposite end portion 15 of the holding webs 13 is bent radially inwardly, so that on the bottom portion 11 facing sides of the end portion 15 each results in a support shoulder 16.
  • the upper side of the end regions 15 is in each case provided with a planar bearing surface 17, which are arranged parallel to the bottom region 11 of the fuel filter 10 when the fuel filter 10 is pressed into the bore 2 of the fuel injection valve 1.
  • the fuel filter 10 described so far consists in particular of metal, and is produced by a punch bending process with the mentioned laser processing process for the formation of the through holes 12.
  • the bottom region 11 in the transition region to a radial circumferential wall 18 inside a concave radius 20 has.
  • the bottom portion 11 on its outer side an insertion bevel 21, which is formed in particular by a radius 22.
  • the cylindrically formed Abziehstempel 25 has in its lower portion three, each 120 degrees to each other arranged grooves 26 on a radially encircling collar 27.
  • the grooves 26 each have a width which corresponds at least to the width of the holding webs 13.
  • the grooves 26 are aligned with the retaining webs 13 and guided to below the retaining shoulders 16, as shown in the Fig. 5 is shown.
  • the Abziehstempel 25 is rotated in its longitudinal axis 28, so that the collar 27 of the Abziehstkovs 25 comes into coincidence with the retaining shoulders 16 of the retaining webs 13. Subsequently, the fuel filter 10 can be pulled out in the direction of the longitudinal axis 28 from the bore 2 of the fuel injection valve 1.
  • the fuel filter 10 according to the invention can be modified or modified in many ways. So it is conceivable, for example, that the bottom portion 11 may also be formed cone or hemispherical. Furthermore, it is also conceivable that the fuel filter 10 is made of plastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
EP10177848A 2009-10-06 2010-09-21 Filtre à carburant pour une soupape d'injection de carburant Withdrawn EP2309116A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910045347 DE102009045347A1 (de) 2009-10-06 2009-10-06 Kraftstofffilter für ein Kraftstoffeinspritzventil

Publications (1)

Publication Number Publication Date
EP2309116A1 true EP2309116A1 (fr) 2011-04-13

Family

ID=43413462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10177848A Withdrawn EP2309116A1 (fr) 2009-10-06 2010-09-21 Filtre à carburant pour une soupape d'injection de carburant

Country Status (2)

Country Link
EP (1) EP2309116A1 (fr)
DE (1) DE102009045347A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114776501B (zh) * 2022-04-21 2022-12-02 浙江双良汽车零部件有限公司 一种下置滤网组件快速更换的燃油泵总成

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004308594A (ja) * 2003-04-09 2004-11-04 Denso Corp 燃料噴射弁
EP1806497A1 (fr) * 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Injecteur
EP2000662A1 (fr) * 2007-06-04 2008-12-10 Continental Automotive GmbH Réglage et agencement de filtre pour soupape d'injection, et soupape d'injection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832940A1 (de) 1998-07-22 2000-01-27 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10307529A1 (de) 2003-02-21 2004-09-02 Robert Bosch Gmbh Stabfilter für Kraftstoffeinspritzanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004308594A (ja) * 2003-04-09 2004-11-04 Denso Corp 燃料噴射弁
EP1806497A1 (fr) * 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Injecteur
EP2000662A1 (fr) * 2007-06-04 2008-12-10 Continental Automotive GmbH Réglage et agencement de filtre pour soupape d'injection, et soupape d'injection

Also Published As

Publication number Publication date
DE102009045347A1 (de) 2011-04-07

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