WO2017102216A1 - Kraftstoffinjektor - Google Patents
Kraftstoffinjektor Download PDFInfo
- Publication number
- WO2017102216A1 WO2017102216A1 PCT/EP2016/077734 EP2016077734W WO2017102216A1 WO 2017102216 A1 WO2017102216 A1 WO 2017102216A1 EP 2016077734 W EP2016077734 W EP 2016077734W WO 2017102216 A1 WO2017102216 A1 WO 2017102216A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve housing
- protective sleeve
- fuel injector
- combustion chamber
- housing section
- Prior art date
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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/046—Injectors with heating, cooling, or thermally-insulating means with thermally-insulating 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- 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
- F02M61/166—Selection of particular materials
-
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/05—Fuel-injection apparatus having means for preventing corrosion
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
Definitions
- the invention relates to a fuel injector according to the preamble of
- a fuel injector according to the preamble of claim 1 is known from DE 10 2012 205 699 A1 of the applicant.
- the known fuel injector is characterized in that on the outer circumference of its the combustion chamber of an internal combustion engine facing valve housing portion is arranged a metal (sacrificial) protective sleeve.
- the background to this is that during operation of the internal combustion engine in the combustion chamber, the highest temperature prevails, in the cylinder head or in the receiving bore on the
- Combustion chamber side facing away gradually decreases depending on the distance to the combustion chamber.
- the temperature of the combustion chamber In an analogous way, the temperature of the combustion chamber
- Fuel injector or its valve housing also with increasing distance from the combustion chamber. Especially at relatively low
- Combustion chamber temperatures or at a relatively large distance from the combustion chamber it may, among other things favored by sulfur-containing fuel to
- valve housing in the cylinder head of the internal combustion engine is usually sealed to the outside via a nozzle sealing disc, this mainly affects the region axially just below the nozzle sealing disk in the region of a first receiving bore section of the cylinder head, since there, in relative terms, the lowest temperatures prevail.
- connection between the (sacrificial) protective sleeve and the fuel injector is in the known fuel!
- shrinking the (Sacrificial) protection sleeve achieved on the outer circumference of the valve housing.
- Valve housing and the (sacrificial) protective sleeve penetrates and thereby corrosion on the valve housing on the combustion chamber side facing the
- sealing element is fastened or arranged, for example, on an additional element in the form of a sleeve in order to be able to position the sealing element at the correct axial position on the valve housing.
- an additional element in the form of a sleeve in order to be able to position the sealing element at the correct axial position on the valve housing.
- the invention is based on the object, a fuel! Njektor according to the preamble of claim 1 such that with a relatively simple construction of the protective element and manufacturing technology simple mounting of the protective element both on the fuel injector and on the combustion chamber side facing the protective element, an optimized sealing effect is achieved.
- This object is achieved in a fuel injector with the features of claim 1.
- the invention is based on the idea to selectively seal the (radial) region between the protective sleeve and the first valve housing section of the valve housing.
- a seal in the sense of the invention is understood to mean a seal which, in the case of very different operating conditions or temperatures and pressures in the combustion chamber, allows condensate to enter the radial gap between the protective sleeve and the valve housing on the side of the fuel facing the combustion chamber. reliably prevented.
- Valve housing section a cohesive connection in the form of a
- solder connection is formed.
- Such a solder joint has, assuming a sufficiently high temperature resistance of the solder, in particular the advantage that during the formation of the seal, the affected components are relatively little thermally stressed. In particular, no unwanted material change (e.g., hardening, embrittlement, or the like) occurs on the valve housing or sleeve by forming such a bonded connection.
- a cohesive connection in the form of a welded connection in particular a laser weld seam is formed.
- a cohesive connection in the form of a welded connection, in particular a laser weld seam is formed.
- Manufacturing tolerances between the protective element or the protective sleeve and the valve housing portion may be formed so that, for example, a relatively simple shrinking of the protective sleeve is made possible on the valve housing section.
- a relatively simple shrinking of the protective sleeve is made possible on the valve housing section.
- the axial fixation or attachment of the protective sleeve to the valve housing can then take place, for example, via the mentioned solder joint or the weld seam.
- Such an embodiment makes it possible in extreme cases even to be able to dispense with a pressing of the protective sleeve on the valve housing section.
- connection between the protective sleeve and the valve housing provides that the protective sleeve is pressed onto the first valve housing section of the valve housing.
- the protective sleeve has a radially encircling flange on the side facing away from the combustion chamber.
- the flange can thus be used as a tool engagement surface for transmitting the axial joining force.
- the flange makes it possible to dispense with a separate sealing disc as in the prior art mentioned above. The seal of the mounted fuel injector to the combustion chamber is taken over in this case by the flange of the protective sleeve.
- Bearing hole of the cylinder head can be achieved if the
- Protective member has such a diameter or such a shape that is formed between the protective element and the first receiving bore portion in the cylinder head, a radial gap.
- Fig. 1 is an illustration of a lower part of an inventive
- Fig. 2 is a used in the fuel injector of FIG. 1 protective element in a single view in side view and
- FIG. 3 the fuel injector of FIG. 1, in which between the
- Valve housing and a protective element is a welded connection is formed, in side view.
- the same elements or elements with the same function are provided in the figures with the same reference numerals.
- FIG. 1 shows a detail of the upper region of an internal combustion engine with a cylinder head 100.
- the cylinder head 100 limits one
- Combustion chamber 101 of the internal combustion engine in which in the direction of a longitudinal axis
- a piston 102 in the usual way is arranged up and down movable.
- the cylinder head 100 has a receiving opening 106 in the form of a stepped bore.
- the receiving opening 106 comprises on the combustion chamber 101 side facing a first
- Receiving bore portion 107 to which a second receiving bore portion 108 connects on the side facing away from the combustion chamber 101 side.
- the two receiving bore portions 107, 108 are connected to each other via a radially encircling step 109, wherein the first receiving bore portion
- Receiving bore portions 107, 108 are preferably each cylindrical.
- the fuel injector 10 shown greatly simplified in FIG. 1 comprises a valve housing 1 1 made of metal with two valve housing sections 12, 13 integrally connected to one another.
- the first valve housing section 12 has a smaller diameter than the second
- Valve housing portion 13 wherein the two valve housing sections 12, 13 are at least approximately cylindrical. The first
- Valve body portion 12 is substantially within the first
- the first valve housing portion 12 merges on the side facing the combustion chamber 101 in a dome-like end portion 14, in whose wall at least one nozzle opening 15 is formed, are injected via the fuel into the combustion chamber 101 of the internal combustion engine can.
- the injection of the fuel takes place in a known per se and therefore not explained in more detail, because also not essential to the invention, in particular by a fuel! Njektor 10 arranged nozzle needle which can be actuated by an actuator.
- Receiving hole portion 107 is arranged, the end portion 14 of the projecting
- Valve housing 1 1 in the combustion chamber 101 inside.
- Fuel injector 10 to the combustion chamber 101 and to the longitudinal axis 105 is exemplified parallel to the longitudinal axis 105.
- the fuel! injector 10 under
- Receiving opening 106 is arranged.
- the flange 25 is located at a
- Fuel injector 10 is arranged. For sealing, it is provided in a conventional manner that the fuel injector 10 is subjected to a force in the axial direction in the direction of the combustion chamber 101, for example by means of a clamping claw, not shown, or the like.
- a relatively high temperature of, for example, a few hundred degrees Celsius which is transmitted to the cylinder head 100 and to the fuel injector 10, prevails within the combustion chamber 101, the temperature in the region of the receiving opening 106 in the direction of the second receiving bore section 108 as a result of the cooling of the cylinder head
- Protective element 20 is surrounded.
- the protective element 20 is formed as a separate component in the form of a protective sleeve 21.
- the protective sleeve 21 is cylindrical, for example, with a constant wall thickness and by a corresponding constitutional toler mich on the
- the protective element 20 or the protective sleeve 21 consists of a material which is more noble than the material of the valve housing 11 or of the first valve housing section 12.
- a more noble material or material is understood to mean a material that is less susceptible to corrosion than the (metallic) material of the material
- Valve housing 1 the protective element 20 and the protective sleeve 21 made of a metal such as copper.
- the choice of suitable material for the protective element 20 depends in particular, but not limited to, on the wall thickness of the protective element 20, as well as the prevailing combustion chamber temperatures and the material of the valve housing 1 1, and is chosen such that over the planned service life of the Kraftstoffinjektors 10 which takes place on the protective element 20 corrosion as far as possible to the end of the service life of the fuel injector 10 has not yet progressed to the valve housing 1 1 and the first valve housing portion 12. It can be seen from FIG.
- Valve housing portion 12 formed sealed.
- the end-side transition region to the valve housing section 12 is provided with a cohesive connection 30, for example in the form of a solder joint 31.
- solder of the solder joint 31 optionally fills in between
- Welded joint 32 comprises a weld seam 33 that extends radially on the outside of the protective sleeve 21, in particular in the form of a weld
- the weld 33 melts the material of the protective sleeve
- the axial position of the weld 33 is as close as possible to the (lower) end face 22 of the protective sleeve 21.
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)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/061,703 US20190063390A1 (en) | 2015-12-14 | 2016-11-15 | Fuel injector |
RU2018125240A RU2715467C2 (ru) | 2015-12-14 | 2016-11-15 | Топливная форсунка |
KR1020187019783A KR20180094034A (ko) | 2015-12-14 | 2016-11-15 | 연료 인젝터 |
EP16795106.0A EP3390802B1 (de) | 2015-12-14 | 2016-11-15 | Kraftstoffinjektor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015225055.5 | 2015-12-14 | ||
DE102015225055.5A DE102015225055A1 (de) | 2015-12-14 | 2015-12-14 | Kraftstoffinjektor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017102216A1 true WO2017102216A1 (de) | 2017-06-22 |
Family
ID=57288461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/077734 WO2017102216A1 (de) | 2015-12-14 | 2016-11-15 | Kraftstoffinjektor |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190063390A1 (de) |
EP (1) | EP3390802B1 (de) |
KR (1) | KR20180094034A (de) |
DE (1) | DE102015225055A1 (de) |
RU (1) | RU2715467C2 (de) |
WO (1) | WO2017102216A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TR201820243A2 (tr) | 2018-12-24 | 2020-07-21 | Bosch Sanayi Ve Tic A S | Bir Yakıt Enjektörüne Yönelik bir Nozul Ünitesi, Yakıt Enjektörü Ve Aynı Zamanda Bir Nozul Ünitesinin Üretilmesine Yönelik Yöntem |
CN109798515A (zh) * | 2019-03-13 | 2019-05-24 | 中南大学 | 一种燃气发生器 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0828075A1 (de) * | 1996-09-10 | 1998-03-11 | Toyota Jidosha Kabushiki Kaisha | Brennstoffeinspritzventil mit Niederschlagreduzierung |
GB2340886A (en) * | 1998-08-26 | 2000-03-01 | Daimler Chrysler Ag | I.c. engine fuel injection nozzle with shielding sleeve |
WO2013149954A1 (de) * | 2012-04-05 | 2013-10-10 | Robert Bosch Gmbh | Einspritzdüse zum einspritzen von medien in einen brennraum |
DE102012205699A1 (de) | 2012-04-05 | 2013-10-10 | Robert Bosch Gmbh | Kraftstoffinjektor, insbesondere Common-Rail-Injektor |
DE102012219654A1 (de) | 2012-10-26 | 2014-04-30 | Robert Bosch Gmbh | Kraftstoffinjektor |
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GB504988A (en) * | 1937-12-14 | 1939-05-03 | Bosch Gmbh Robert | Improvements in the cooling of fuel injection nozzles for internal combustion engines |
DE873011C (de) * | 1951-04-24 | 1953-04-09 | Saurer Ag Adolph | Einspritzduese fuer Dieselmotoren |
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DE3000061C2 (de) * | 1980-01-03 | 1993-10-14 | Bosch Gmbh Robert | Kraftstoffeinspritzdüse für Brennkraftmaschinen |
DE3147015A1 (de) * | 1981-11-27 | 1983-06-01 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Luftverdichtende, direkteinspritzende brennkraftmaschine |
JPS58152164A (ja) * | 1982-03-04 | 1983-09-09 | Yanmar Diesel Engine Co Ltd | 内燃機関の燃料噴射弁ノズル |
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JPH0486368A (ja) * | 1990-07-26 | 1992-03-18 | Kubota Corp | ディーゼルエンジンの燃料噴射ノズルのノズル先端部防熱装置 |
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JPH10252610A (ja) * | 1997-01-13 | 1998-09-22 | Yamaha Motor Co Ltd | 筒内噴射エンジン |
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DE102013202920A1 (de) * | 2013-02-22 | 2014-08-28 | Robert Bosch Gmbh | Ventil zum Einspritzen von fluidem Brennstoff |
DE102013203681A1 (de) * | 2013-03-05 | 2014-09-11 | Robert Bosch Gmbh | Ventil zum Einspritzen von fluidem Brennstoff |
DE102013212321A1 (de) * | 2013-06-26 | 2014-12-31 | Robert Bosch Gmbh | Kraftstoffinjektor |
US9410520B2 (en) * | 2013-08-08 | 2016-08-09 | Cummins Inc. | Internal combustion engine including an injector combustion seal positioned between a fuel injector and an engine body |
US10036355B2 (en) * | 2013-08-08 | 2018-07-31 | Cummins Inc. | Heat transferring fuel injector combustion seal with load bearing capability |
WO2017003460A1 (en) * | 2015-06-30 | 2017-01-05 | Cummins Inc. | Nozzle combustion shield |
US10605213B2 (en) * | 2015-08-21 | 2020-03-31 | Cummins Inc. | Nozzle combustion shield and sealing member with improved heat transfer capabilities |
DE102015223605A1 (de) * | 2015-11-27 | 2017-06-01 | Robert Bosch Gmbh | Injektoranordnung mit Thermoschutzhülse |
US10041440B2 (en) * | 2015-12-02 | 2018-08-07 | Aaron Di Pietro | Fuel injector insert |
-
2015
- 2015-12-14 DE DE102015225055.5A patent/DE102015225055A1/de not_active Withdrawn
-
2016
- 2016-11-15 RU RU2018125240A patent/RU2715467C2/ru active
- 2016-11-15 KR KR1020187019783A patent/KR20180094034A/ko active Search and Examination
- 2016-11-15 US US16/061,703 patent/US20190063390A1/en not_active Abandoned
- 2016-11-15 EP EP16795106.0A patent/EP3390802B1/de active Active
- 2016-11-15 WO PCT/EP2016/077734 patent/WO2017102216A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0828075A1 (de) * | 1996-09-10 | 1998-03-11 | Toyota Jidosha Kabushiki Kaisha | Brennstoffeinspritzventil mit Niederschlagreduzierung |
GB2340886A (en) * | 1998-08-26 | 2000-03-01 | Daimler Chrysler Ag | I.c. engine fuel injection nozzle with shielding sleeve |
WO2013149954A1 (de) * | 2012-04-05 | 2013-10-10 | Robert Bosch Gmbh | Einspritzdüse zum einspritzen von medien in einen brennraum |
DE102012205699A1 (de) | 2012-04-05 | 2013-10-10 | Robert Bosch Gmbh | Kraftstoffinjektor, insbesondere Common-Rail-Injektor |
DE102012219654A1 (de) | 2012-10-26 | 2014-04-30 | Robert Bosch Gmbh | Kraftstoffinjektor |
Also Published As
Publication number | Publication date |
---|---|
EP3390802B1 (de) | 2019-10-23 |
RU2018125240A (ru) | 2020-01-17 |
US20190063390A1 (en) | 2019-02-28 |
KR20180094034A (ko) | 2018-08-22 |
RU2715467C2 (ru) | 2020-02-28 |
DE102015225055A1 (de) | 2017-06-14 |
RU2018125240A3 (de) | 2020-01-17 |
EP3390802A1 (de) | 2018-10-24 |
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