EP1040270B1 - Kraftstoffeinspritzventil für brennkraftmaschinen - Google Patents
Kraftstoffeinspritzventil für brennkraftmaschinen Download PDFInfo
- Publication number
- EP1040270B1 EP1040270B1 EP99929069A EP99929069A EP1040270B1 EP 1040270 B1 EP1040270 B1 EP 1040270B1 EP 99929069 A EP99929069 A EP 99929069A EP 99929069 A EP99929069 A EP 99929069A EP 1040270 B1 EP1040270 B1 EP 1040270B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- fuel filter
- injection valve
- filter
- section
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 125
- 238000002347 injection Methods 0.000 title claims description 46
- 239000007924 injection Substances 0.000 title claims description 46
- 238000002485 combustion reaction Methods 0.000 title claims description 14
- 230000008901 benefit Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
- 230000002475 laxative effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
Definitions
- the invention relates to a fuel injection valve for Internal combustion engines according to the preamble of claim 1 out.
- a fuel injection valve for Internal combustion engines according to the preamble of claim 1 out.
- Such a known from DE 196 08 608 Fuel injector has one of one Connection piece for a fuel injection line laxative fuel inlet channel to one Injection opening in the combustion chamber of the one to be supplied Internal combustion engine opens.
- Dirt particles and chips in the fuel are a rod-shaped Fuel filter inserted into the inlet channel, which is connected to the its axial end faces provided in a collar Bore of the fuel supply channel is guided.
- the Rotationally symmetrical filter body of the fuel filter has one in diameter between its collar surfaces reduced middle section.
- this middle section are two groups of axially closed on one side Longitudinal grooves incorporated, of which a first group of an upper end face facing away from the injection opening and a second group from one of the injection port facing lower end face of the filter body.
- the longitudinal grooves of the first and second groups alternately distributed over the circumference of the filter body arranged.
- the known fuel injection valve has the Disadvantage that the fuel filter is a relatively large Dead volume is formed.
- the known ones are therefore sufficient Fuel injectors for use on direct injection Internal combustion engines no longer required high injection pressures.
- the fuel injector according to the invention for Internal combustion engines with the characteristic features of the Claim 1 has the advantage that the coordination of the flow cross-sections on the fuel filter and the inlet channel to the total injection cross section of the Injector the pressure drops within the Fuel inlet channel and in particular on the fuel filter can be greatly reduced. Furthermore, with the Training of the fuel injector according to the invention the dead volume in the fuel inlet channel and on Fuel filter can be reduced, which in terms of Injection process once again has a positive effect. there are these improvements by the invention Interpretation of the size of the flow cross section on Fuel filter and the flow cross section of the Fuel inlet channel downstream of the fuel filter achieved, the five to ten times the size of the total flow area all injection openings on the fuel injector should be.
- the flow cross section on Fuel inlet and at the fuel outlet of the Fuel filter the same size or slightly larger form than the cross section of the Fuel filter downstream area of the Fuel supply channel.
- throttle losses can Fuel filters can be safely excluded.
- Another The advantage is the reduction in the number of longitudinal grooves in the filter body from six grooves to four grooves reached. In this way, the dead volume on Filter end and the throttle losses at Fuel transfer between the individual longitudinal grooves of the be reduced in both groups.
- the Longitudinal recesses on the fuel filter as longitudinal grooves or but also be designed as surfaces.
- the fuel inlet channel has the filter body of the Fuel filter also on its lower, outlet side End a stop cone with which the fuel filter on a complementary conical seat of the Inlet channel is present.
- a stop cone with which the fuel filter on a complementary conical seat of the Inlet channel is present.
- the conical seat surface is in the fuel inlet channel and the stop cone surface interacting with this Fuel filter preferably with a cone angle between 45 and 90 ° trained. It is also particularly advantageous the bevelled surface grinding in the stop cone surface also form with such a cone angle.
- Fuel injection valve for internal combustion engines is in shown in the drawing and will be described in more detail below explained.
- FIG. 1 shows a longitudinal section through a known Fuel injection valve
- Figure 2 is an enlarged Partial section from Figure 1 with the invention Training of the fuel filter and the inlet channel and the Figures 3 to 7 different views of the fuel filter in a single part representation.
- Fuel injection valve for internal combustion engines one in the combustion chamber of the one to be supplied Internal combustion engine projecting valve body 1, which means a clamping nut 3 with the interposition of one Intermediate plate 5 axially against a valve holding body 7 is tense.
- a piston-shaped valve member 11 axially guided with its lower combustion chamber end face one Forms valve sealing surface 13 with which the valve member 11 for Control of an opening cross section with an inward protruding valve seat 15 on the guide bore 9 interacts.
- the valve seat 15 is downstream at least one injection opening 17 arranged by the guide bore 9 starting in the combustion chamber Internal combustion engine opens.
- a valve spring 21 is arranged the valve member 11 towards the valve seat 15 in the closing direction applied.
- a Fuel inlet channel 23 is provided, the Valve holding body 7 axially from one at its top, the Injection opening 17 facing end face provided Connection piece 25 for a not shown Fuel injection line up to the intermediate washer 5 penetrates and of two bore sections 26, 27th of different diameters.
- the lower Bore section 27 of the fuel inlet channel 23 opens thereby to a connecting channel 29 of the Fuel inlet channel 23, which the intermediate disc 5th penetrating into a surrounding the valve member 11
- Pressure chamber 31 opens out, which is an annular gap on the shaft of the Valve member 11 extends to the valve seat 15.
- the valve member 11 In the area of the pressure chamber 31 is the valve member 11 with one of Valve seat 15 facing pressure shoulder 33 provided on the the high fuel pressure in the opening direction on the valve member 11 attacks.
- a fuel filter 35 with a rod-shaped filter body used, the incoming fuel for passage through narrow gaps forces between the profiled outer circumference of the Filter body 35 and the surrounding wall of the Bore section 26 of the fuel inlet channel 23 are formed.
- the fuel is filtered and carried dirt particles and chips from a certain Size held back.
- Fuel filter 35 has one rod-shaped filter body on its axial ends, cross-sectional extensions forming a bundle having.
- One forms the injection opening 13 facing upper collar a press fit 37 and a lower collar facing the injection opening 13 Guide collar 55.
- the fuel filter 35 in its lateral surface two groups of axially one-sided closed longitudinal grooves, of which a first group of longitudinal grooves 39 from one of the injection opening 13 facing away from the upper end face 41.
- a second Group of longitudinal grooves 43 goes from one of the injection opening 13 facing lower end face 45 of the fuel filter 35 out. As shown in FIGS.
- FIG 3 to 7 two longitudinal grooves 39 and two longitudinal grooves 43 provided that alternate over the scope of the Fuel filter 35 are arranged distributed.
- Figure 3 shows a first side view of the fuel filter 35 and FIGS. 4 and 5 each show a view from above and below on this side view.
- 6 is a Cross section of the fuel filter body 35 shown.
- the Figure 7 shows a further 90 ° around the longitudinal axis Figure 3 rotated representation of the invention Fuel filter 35.
- the fuel filter 35 has, as shown in Figure 7 a stop cone 47 on its lower end face 45, with which he on a conical seat 49 of the inlet channel 23 is present.
- This conical seat 49 is the Inlet channel 23 at the cross-section transition between the upper Bore section 26 with a larger diameter in the Diameter smaller lower bore section 27 formed.
- the cone angle of the stop cone 47 and the conical Seat 49 is 60 ° in the exemplary embodiment, can but alternatively be designed between 45 and 90 °.
- Fuel inlet channel 23 are two sloping Surface grinding 51 worked into the stop cone 47, the starting from the lower end face 45 in the Open longitudinal grooves 43 and preferably the same Have cone angles like the stop cone 47. Farther is at the upper end of the fuel filter 35 remote from the injection a chamfer 53 at the transition between the upper end face 41 provided to the circumferential surface of the press collar 37.
- the smallest cross section of the lower one Fuel inlet channel section 27 the flow cross section of the fuel supply channel 23.
- the entire Flow cross-section at the fuel filter 35 is by the sum of all trailing edges between the individual groups of longitudinal grooves 39, 43 and the Overflow areas at the inlet and outlet areas of the Press fit collar 37 and the surface grinding 51 determined.
- the flow cross-section is at the fuel inlet and at the fuel outlet of the fuel filter 35 the same size or slightly larger than that Flow cross section of the fuel inlet channel 23 in Area of bore 27.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (7)
- Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Kraftstoffzulaufkanal (23), der von einem Anschlußstutzen (25) ausgehend an wenigstens eine Einspritzöffnung (17) mündet und in den ein stabförmiger Kraftstoffilter (35) eingesetzt ist, der an seinen axialen Enden im Zulaufkanal geführt ist und in dessen Mantelfläche zwei Gruppen von axial einseitig geschlossenen Längsnuten eingearbeitet sind, von denen eine erste Gruppe (39) von einer der Einspritzöffnung (17) abgewandten oberen Stirnfläche (41) und eine zweite Gruppe (43) von einer der Einspritzöffnung (17) zugewandten unteren Stirnfläche (45) des Kraftstoffilters (35) ausgeht, dadurch gekennzeichnet, daß die Größe des Durchflußquerschnittes am Kraftstoffilter (35) und die Größe des Durchflußquerschnittes des Kraftstoffzulaufkanals (23) im Bereich (27) stromabwärts des Kraftstoffilters (35) das fünf- bis zehnfache der Größe des Gesamtdurchflußquerschnittes sämtlicher Einspritzöffnungen (17) am Kraftstoffeinspritzventil beträgt.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß der Durchflußquerschnitt am Kraftstoffeintritt und am Kraftstoffaustritt des Kraftstoffilters (35) gleich groß oder geringfügig größer ist, als der Durchflußquerschnitt des sich an den Kraftstoffilter (35) stromabwärts anschließenden Bereiches (27) des Kraftstoffzulaufkanals (23).
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß je Gruppe von einseitig geschlossenen Längsnuten (39, 43) zwei Längsnuten oder Flächen vorgesehen sind wobei die Längsnuten der ersten und zweiten Gruppe (39, 43) abwechselnd über den Umfang des Kraftstoffilters (35) verteilt angeordnet sind.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß an der oberen, ein Kraftstoffeintrittsbereich bildenden Stirnfläche (41) des Kraftstoffilters (35) eine Fase (53) vorgesehen ist.
- Kraftstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß an einer unteren, austrittsseitigen Stirnfläche (45) des Kraftstoffilters (35) ein Anschlagkonus (47) vorgesehen ist, mit dem der Kraftstoffilter (35) an einer konischen Sitzfläche (49) des Zulaufkanals (23) anliegt.
- Kraftstoffeinspritzventil nach Anspruch 5, dadurch gekennzeichnet, daß am Anschlagkonus (47) zwei schräge Flächenanschliffe (51) vorgesehen sind, die in die Längsnuten (43) der zweiten, zur Einspritzöffnung (17) offenen Gruppe münden.
- Kraftstoffeinspritzventil nach Anspruch 5, dadurch gekennzeichnet, daß der Anschlagkonus (47) am Kraftstoffilter (35) und die konische Sitzfläche (49) innerhalb des Kraftstoffzulaufkanals (23) einen Konuswinkel zwischen 45 und 90° aufweisen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19832940A DE19832940A1 (de) | 1998-07-22 | 1998-07-22 | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE19832940 | 1998-07-22 | ||
PCT/DE1999/001284 WO2000005500A1 (de) | 1998-07-22 | 1999-05-03 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1040270A1 EP1040270A1 (de) | 2000-10-04 |
EP1040270B1 true EP1040270B1 (de) | 2004-08-04 |
Family
ID=7874899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99929069A Expired - Lifetime EP1040270B1 (de) | 1998-07-22 | 1999-05-03 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6186420B1 (de) |
EP (1) | EP1040270B1 (de) |
JP (1) | JP2002521605A (de) |
DE (2) | DE19832940A1 (de) |
WO (1) | WO2000005500A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4078781B2 (ja) * | 2000-03-01 | 2008-04-23 | 株式会社デンソー | インレットフィルタ |
FR2874973B1 (fr) * | 2004-09-09 | 2009-02-13 | Renault Sas | Circuit d'alimentation en combustible sous pression a moyens de filtrage et d'amortissement |
DE102004046888A1 (de) * | 2004-09-28 | 2006-03-30 | Robert Bosch Gmbh | Injektor zur Kraftstoffeinspritzung an einer Brennkraftmaschine |
JP4682977B2 (ja) * | 2006-12-27 | 2011-05-11 | 株式会社デンソー | フィルタおよびそれを備えた燃料噴射弁 |
DE202007002290U1 (de) | 2007-01-09 | 2007-04-19 | Reich Gmbh | Filter mit Filternuten |
DE102007002071A1 (de) | 2007-01-09 | 2008-07-10 | Reich Gmbh | Filter mit Filternuten |
US8500045B2 (en) * | 2009-07-20 | 2013-08-06 | Caterpillar Inc. | Parallel circuit fuel filtration for fuel injectors |
DE102009029312A1 (de) | 2009-09-09 | 2011-03-10 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung |
DE102009045347A1 (de) | 2009-10-06 | 2011-04-07 | Robert Bosch Gmbh | Kraftstofffilter für ein Kraftstoffeinspritzventil |
DE102011053113B4 (de) * | 2011-08-30 | 2017-06-29 | L'orange Gmbh | Filteranordnung, insbesondere für Kraftstoffinjektoren |
DE102012224388A1 (de) | 2012-12-27 | 2014-07-03 | Robert Bosch Gmbh | Zweiteiliger Partikelfilter und Verfahren zu seiner Herstellung |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1157315A (en) * | 1913-08-05 | 1915-10-19 | Gen Electric | Fuel-injector. |
US1964218A (en) * | 1931-03-17 | 1934-06-26 | Firm Hannoversche Maschb Actie | Means for filtering the fuel supplied to the injector nozzles of internal combustion engines |
US2067131A (en) * | 1935-08-05 | 1937-01-05 | Timken Roller Bearing Co | Fuel injector |
US3499605A (en) * | 1967-12-22 | 1970-03-10 | Allis Chalmers Mfg Co | Nozzle holder |
JPS5617717Y2 (de) * | 1976-12-20 | 1981-04-24 | ||
US4312479A (en) * | 1980-02-19 | 1982-01-26 | Stanadyne, Inc. | Fuel injection nozzle with edge filter |
JPS61107969U (de) * | 1984-12-21 | 1986-07-09 | ||
JP2703203B2 (ja) * | 1987-09-25 | 1998-01-26 | 株式会社日立製作所 | 電磁式燃料噴射弁 |
GB2220984A (en) * | 1988-07-20 | 1990-01-24 | Lucas Ind Plc | Fuel injection nozzle |
JP2539522B2 (ja) * | 1988-12-28 | 1996-10-02 | 株式会社日立製作所 | 電磁式燃料噴射弁 |
JPH036052U (de) * | 1989-06-06 | 1991-01-22 | ||
JPH0417768A (ja) * | 1990-05-02 | 1992-01-22 | Nippondenso Co Ltd | 燃料噴射弁用バーフィルタ |
JP2568323B2 (ja) * | 1991-06-28 | 1997-01-08 | 株式会社日立製作所 | 弁座付きノズル及びその製造方法、電磁弁 |
JP3139162B2 (ja) * | 1992-09-28 | 2001-02-26 | 株式会社デンソー | 燃料噴射ノズル |
DE4237469B4 (de) * | 1992-11-06 | 2004-05-13 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung, insbesondere Pumpedüse für Brennkraftmaschinen |
GB9305770D0 (en) * | 1993-03-19 | 1993-05-05 | Lucas Ind Plc | Filters for liquid |
US5365906A (en) * | 1993-12-20 | 1994-11-22 | Chrysler Corporation | Fluid flow check valve for fuel system |
US5421306A (en) * | 1994-03-07 | 1995-06-06 | Walbro Corporation | Check valve for engine fuel delivery systems |
JPH084627A (ja) * | 1994-06-17 | 1996-01-09 | Nippondenso Co Ltd | フィルタおよびそれを用いた燃料噴射ノズル |
JPH08312490A (ja) * | 1995-05-11 | 1996-11-26 | Keihin Seiki Mfg Co Ltd | 電磁式燃料噴射弁 |
DE19608608A1 (de) * | 1996-03-06 | 1997-09-11 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
US5879553A (en) * | 1996-12-17 | 1999-03-09 | Caterpillar Inc. | Apparatus for filtering particulate matter from a fluid and method of making same |
-
1998
- 1998-07-22 DE DE19832940A patent/DE19832940A1/de not_active Withdrawn
-
1999
- 1999-05-03 EP EP99929069A patent/EP1040270B1/de not_active Expired - Lifetime
- 1999-05-03 DE DE59910131T patent/DE59910131D1/de not_active Expired - Lifetime
- 1999-05-03 US US09/508,716 patent/US6186420B1/en not_active Expired - Lifetime
- 1999-05-03 WO PCT/DE1999/001284 patent/WO2000005500A1/de active IP Right Grant
- 1999-05-03 JP JP2000561431A patent/JP2002521605A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2000005500A1 (de) | 2000-02-03 |
DE59910131D1 (de) | 2004-09-09 |
EP1040270A1 (de) | 2000-10-04 |
JP2002521605A (ja) | 2002-07-16 |
DE19832940A1 (de) | 2000-01-27 |
US6186420B1 (en) | 2001-02-13 |
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