EP0469100A1 - Vorrichtung zur einspritzung eines brennstoff-luft-gemisches. - Google Patents
Vorrichtung zur einspritzung eines brennstoff-luft-gemisches.Info
- Publication number
- EP0469100A1 EP0469100A1 EP19910902232 EP91902232A EP0469100A1 EP 0469100 A1 EP0469100 A1 EP 0469100A1 EP 19910902232 EP19910902232 EP 19910902232 EP 91902232 A EP91902232 A EP 91902232A EP 0469100 A1 EP0469100 A1 EP 0469100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- fuel
- injection end
- valve
- fuel injection
- 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.)
- Granted
Links
- 239000007924 injection Substances 0.000 title claims abstract description 63
- 238000002347 injection Methods 0.000 title claims abstract description 63
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 239000000446 fuel Substances 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 9
- 230000006978 adaptation Effects 0.000 abstract description 3
- 239000012899 standard injection Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/08—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the fuel being carried by compressed air into main stream of combustion-air
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
- F02M51/0678—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
- F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1853—Orifice plates
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/047—Injectors peculiar thereto injectors with air chambers, e.g. communicating with atmosphere for aerating the nozzles
Definitions
- the invention relates to a device for injecting a fuel-air mixture according to the preamble of the main claim.
- a device for the injection of a fuel-air mixture (DE-OS 32 40 554) is already known, which is an injection valve with a. Acting gas guide sleeve, the spray opening is surrounded in the immediate vicinity by a gas ring gap on the gas guide sleeve which is connected to a gas ring channel.
- the adaptation of the gas ring gap to the needs of the internal combustion engine and to different types of injection valves is only possible with great effort by moving or bending the gas guide sleeve, so that the production of this known device in large series production causes great costs, which are caused by the optimization of the Gas ring gap can be conditioned.
- the device according to the invention for injecting a fuel-air mixture with the characterizing features of the main claim has the advantage, in contrast, that air is easily and inexpensively on a fuel injector. can be generated without an adjustment of the gas ring gap required during assembly, since this is determined by the selection of an air-encasing bushing designed according to the respective requirements.
- the use of different Luftumfas ⁇ sungsbuchen allows the amount of air to be adapted to the respective needs of the internal combustion engine without the need for further adjustment.
- the exact observance of the defined air gap can only be ensured without an adjustment process by directly supporting the air encasing bushing at the injection end of the fuel injection valve.
- the small height of the air gap ensures that the intake air accelerates almost to the speed of sound and thus the fuel sprayed out of the fuel spray openings is finely atomized.
- the mixture spray opening widens out in a funnel shape away from the end of the injection, so that even if the air emerging from the fuel injection opening is faulty, the mixture spray opening wall cannot be wetted.
- At least one air supply opening is formed in the cylinder part of the air intake bushing, which has a radial air supply, for example from one in a suction pipe - 3 -
- the internal combustion engine designed air channel to the annular surface of the bottom part.
- the stop surfaces are formed by an outer interrupted ring web of the base part, which, due to the numerous stop surfaces projecting beyond the ring surface by a predetermined distance, not only ensures that the air-encasing bush is in exact contact with the fuel injection valve, but also enables a secure air supply to the ring surface through recesses formed in the interrupted ring web.
- the ring surface is formed by an inner ring web, which has a predetermined axial distance from the injection end and thus enables the simple formation of a narrow air gap.
- the bottom part on its inside between the stop surfaces and the inner ring land in radial direction towards the ring surface at least towards Part is formed obliquely to the injection end.
- the formation of a circumferential air supply groove in a cylinder inner wall of the cylinder part, into which the at least one air supply opening opens, has the advantage of an improved air supply from the air supply opening past the lower end of the fuel injection valve to the annular surface.
- a seal of the at least one air supply opening is required between the intake manifold receptacle of an internal combustion engine, in which the device according to the invention is mounted, and the circumference of the air-encasing bush.
- an annular groove is formed on the circumference of the air encasing bushing on both sides of the air supply opening, which groove serves to receive an upper sealing ring or a lower sealing ring.
- FIG. 1 shows a first embodiment of the device according to the invention
- FIG. 2 shows a partial section through the device
- FIG. 3 shows a section along the line III-III in FIG. 2
- FIG. 4 shows an enlarged section of a second exemplary embodiment.
- the device shown in FIG. 1, for example, for injecting a fuel-air mixture with a fuel injector 1 is mounted in an injector receptacle 2 of an intake manifold 3 of an internal combustion engine.
- An air encasing bushing 4 of the device comprises concentrically to a longitudinal valve axis 5 an injection end 6 of the fuel injection valve 1 which is shown in FIG. 2
- Bypass in front of a throttle valve in the intake manifold 3 or the air conveyed by an additional blower to the air encasing bush 4 takes place through at least one air duct 7 formed in the intake manifold 3.
- the exemplary embodiment shown only partially in section in FIG. 2 shows the cup-shaped air encasing bushing 4, which has a cylinder part 10, a bottom part 11 and, in the bottom part, a cylindrical mixing opening 31 concentric to the longitudinal axis of the valve and a mixture spray opening widening in a funnel shape downstream 14 with a mixture spray opening wall 15.
- the cylinder part 10 encloses at least partially axially and the bottom part 11 at least partially radially the lower injection end 6 of the fuel injection valve 1, which in the exemplary embodiment has two fuel injection openings 8 and which, in the exemplary embodiment shown, cooperates with a fixed valve seat surface 18 in a valve housing 17 Has valve needle 19.
- the fuel injection openings 8 are therefore formed in a so-called perforated disk 20, which is arranged downstream of the valve seat surface 18 as part of the injection end 6.
- a radial, inner annular web 23 reaching as far as the mixing opening 31 is formed, which has a flat radial annular surface 24 facing the injection end 6.
- An outer interrupted ring web 25 is formed on the inside 21 of the bottom part 11 at a radial distance from the inner ring web 23 to the outside.
- the interrupted ring web 25 has, for example, six flat stop surfaces 26 with which the air-encasing socket 4 on the perforated disk 20 of the injection end 6 of the fuel injector 1 is present.
- a total of six recesses 29 are formed in the interrupted annular web 25 between the stop surfaces 26.
- a defined air gap 27 is formed between the injection end 6 or the perforated disk 20 and the annular surface 24.
- the bottom part 11 is formed on its inner side 21 in the radial direction between the interrupted ring web 25 and the inner ring web 23 towards the ring surface 24, at least in part obliquely upwards towards the injection end 6, in order to equalize the inflow of air to the air gap 27 to achieve.
- air supply openings 28 are formed, which serve to supply air from the air duct 7 into the air encasing bushing 4.
- the position of the air supply openings 28 with respect to the longitudinal valve axis 5 has a tangential component and / or that the air supply openings 28 are inclined with respect to the longitudinal axis 5 run.
- the interrupted annular web 25 at least two support towers having stop faces can be formed in the base part 11 in an exemplary embodiment not shown.
- a circumferential air supply groove 35 connected to the recesses 29, into which the air supply openings 28 open.
- the groove base 36 and the side surface 37 of the air supply groove 35 facing away from the fuel injection openings 8 are formed by the cylinder inner wall 34.
- the air supply groove 35 is delimited by the base part 11.
- the air supply groove 35 enables an improved flow behavior of the air through the air supply openings 28 past the lower end of the fuel injector 1 to the air gap 27. Significant throttling of the air flow is avoided and turbulence is reduced, so that the influence on the narrow air gap 27 accelerated air is low.
- an internal groove 42 is formed above the air supply openings 28 and receives an inner sealing ring 43.
- the inner sealing ring 43 forms a seal between the cylinder part 10 and the valve housing 17.
- Another possibility for forming a seal between the cylinder part 10 and the valve housing 17 is to carry out a laser sealing weld or a corresponding adhesive in the area of the air encasing bushing 4 facing away from the injection end 6.
- the air encasing bushing 4 can be attached to the fuel injection valve 1, for example, in such a way that the abutment surfaces 26 of the interrupted annular web 25 are connected to the injection end 6 or the perforated disk 20 of the fuel injection valve 1 by gluing.
- at least one spacer 45 can be arranged between the injection end 6 or the perforated disk 20 of the fuel injection valve 1 and the stop surfaces 26, which spacer 45 defines the height of the air gap 27 and thus also the air mass flow and the air flow Acceleration of the air influences.
- the same and equivalent parts are identified by the same reference numerals as in Figures 1 to 3.
- an upper annular groove 38 is formed on the circumference of the air encasing bushing 4 and serves to receive an upper sealing ring 39.
- a lower sealing ring 41 is arranged in a lower annular groove 40 on the circumference of the air encasing bushing 4.
- the device according to the invention for injecting a fuel-air mixture is a single-part solution.
- the air encasing bushing 4 can advantageously be used for different valve types, but also the adaptation to different air mass flows through the use of a spacer or the exchange of the air encasing bushing 4 is possible without any problems.
- the abutment of the stop surfaces 26 of the air encasing bush 4 at the injection end 6 or the perforated disk 20 of the fuel injection valve 1 forms an exact air gap 27, so that there is a defined acceleration of the air.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4004897 | 1990-02-16 | ||
| DE4004897A DE4004897C1 (en) | 1990-02-16 | 1990-02-16 | IC engine fuel charge feed - has mix injection orifice coaxial to valve axis in base of sleeve |
| PCT/DE1991/000048 WO1991012427A1 (de) | 1990-02-16 | 1991-01-21 | Vorrichtung zur einspritzung eines brennstoff-luft-gemisches |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0469100A1 true EP0469100A1 (de) | 1992-02-05 |
| EP0469100B1 EP0469100B1 (de) | 1994-11-09 |
Family
ID=6400332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91902232A Expired - Lifetime EP0469100B1 (de) | 1990-02-16 | 1991-01-21 | Vorrichtung zur einspritzung eines brennstoff-luft-gemisches |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5207383A (de) |
| EP (1) | EP0469100B1 (de) |
| JP (1) | JP3083556B2 (de) |
| KR (1) | KR0185730B1 (de) |
| BR (1) | BR9104467A (de) |
| DE (2) | DE4004897C1 (de) |
| ES (1) | ES2064992T3 (de) |
| WO (1) | WO1991012427A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5211682A (en) * | 1991-06-11 | 1993-05-18 | Nippondenso Co., Ltd. | Fuel feed apparatus of internal combustion engine and manufacturing method therefor |
| US5449120A (en) * | 1991-06-11 | 1995-09-12 | Nippondenso Co., Ltd. | Fuel feed apparatus of internal combustion engine |
| CZ69294A3 (en) * | 1991-10-21 | 1994-07-13 | Orbital Eng Pty | Process and apparatus for feeding liquids |
| US5174505A (en) * | 1991-11-01 | 1992-12-29 | Siemens Automotive L.P. | Air assist atomizer for fuel injector |
| DE4205887A1 (de) * | 1992-02-26 | 1993-09-02 | Bosch Gmbh Robert | Vorrichtung zur einspritzung eines brennstoff-gas-gemisches |
| JP2822847B2 (ja) * | 1993-06-23 | 1998-11-11 | 三菱電機株式会社 | 燃料噴射弁 |
| US5499603A (en) * | 1993-10-27 | 1996-03-19 | Vinokur; Michael | Liquid injection system for internal combustion engine |
| FR2727721A1 (fr) * | 1994-12-01 | 1996-06-07 | Magneti Marelli France | Injecteur a jupe de dispersion de carburant |
| DE19505886A1 (de) * | 1995-02-21 | 1996-08-22 | Bosch Gmbh Robert | Vorrichtung zur Einspritzung eines Brennstoff-Gas-Gemisches |
| DE19522284B4 (de) * | 1995-06-20 | 2007-05-10 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| US5765750A (en) * | 1996-07-26 | 1998-06-16 | Siemens Automotive Corporation | Method and apparatus for controlled atomization in a fuel injector for an internal combustion engine |
| JP3134813B2 (ja) * | 1997-06-20 | 2001-02-13 | トヨタ自動車株式会社 | 内燃機関の燃料噴射弁 |
| US6959699B2 (en) * | 2003-11-03 | 2005-11-01 | Caterpillar Inc | Injection of fuel vapor and air mixture into an engine cylinder |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3272441A (en) * | 1965-11-03 | 1966-09-13 | Gulf Research Development Co | Aspirating spray nozzle |
| DE1934704C3 (de) * | 1969-07-09 | 1978-09-14 | Robert Bosch Gmbh, 7000 Stuttgart | Regeleinrichtung für eine Kraftstoffeinspritzdüse für fremdgezündete Brennkraftmaschinen |
| DE2746863A1 (de) * | 1977-10-19 | 1979-04-26 | Hofmann Walter Maschf | Farbspritzpistole |
| JPS58195058A (ja) * | 1982-05-07 | 1983-11-14 | Toyota Motor Corp | 燃料噴射式内燃機関のエアアシスト装置 |
| JPS5943962A (ja) * | 1982-09-06 | 1984-03-12 | Toyota Motor Corp | 複吸気エンジンの燃料噴射弁装置 |
| DE3234829A1 (de) * | 1982-09-21 | 1984-03-22 | Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln | Einspritzvorrichtung fuer einen dieselmotor |
| DE3240554C2 (de) * | 1982-11-03 | 1993-10-07 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für eine Brennkraftmaschine |
| JPS59131575U (ja) * | 1983-02-23 | 1984-09-04 | トヨタ自動車株式会社 | 電子制御機関用燃料噴射弁 |
| DE3704330A1 (de) * | 1986-03-04 | 1987-09-10 | Volkswagen Ag | Kraftstoffeinspritzeinrichtung |
| US4982716A (en) * | 1988-02-19 | 1991-01-08 | Toyota Jidosha Kabushiki Kaisha | Fuel injection valve with an air assist adapter for an internal combustion engine |
| FR2635827B1 (fr) * | 1988-08-30 | 1993-11-26 | Solex | Dispositif d'injection de combustible a chambre d'aeration |
| US5035358A (en) * | 1989-03-22 | 1991-07-30 | Toyota Jidosha Kabushiki Kaisha | Fuel injector for use in an engine |
-
1990
- 1990-02-16 DE DE4004897A patent/DE4004897C1/de not_active Expired - Lifetime
-
1991
- 1991-01-21 KR KR1019910701352A patent/KR0185730B1/ko not_active Expired - Fee Related
- 1991-01-21 US US07/768,961 patent/US5207383A/en not_active Expired - Fee Related
- 1991-01-21 JP JP03502372A patent/JP3083556B2/ja not_active Expired - Fee Related
- 1991-01-21 DE DE59103475T patent/DE59103475D1/de not_active Expired - Fee Related
- 1991-01-21 EP EP91902232A patent/EP0469100B1/de not_active Expired - Lifetime
- 1991-01-21 BR BR919104467A patent/BR9104467A/pt not_active IP Right Cessation
- 1991-01-21 ES ES91902232T patent/ES2064992T3/es not_active Expired - Lifetime
- 1991-01-21 WO PCT/DE1991/000048 patent/WO1991012427A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9112427A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2064992T3 (es) | 1995-02-01 |
| EP0469100B1 (de) | 1994-11-09 |
| DE4004897C1 (en) | 1991-06-06 |
| JP3083556B2 (ja) | 2000-09-04 |
| DE59103475D1 (de) | 1994-12-15 |
| KR0185730B1 (ko) | 1999-03-20 |
| JPH04505494A (ja) | 1992-09-24 |
| KR920701667A (ko) | 1992-08-12 |
| US5207383A (en) | 1993-05-04 |
| WO1991012427A1 (de) | 1991-08-22 |
| BR9104467A (pt) | 1992-04-21 |
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