EP0435973A1 - Anordnung zur zerstäubung. - Google Patents
Anordnung zur zerstäubung.Info
- Publication number
- EP0435973A1 EP0435973A1 EP19900908460 EP90908460A EP0435973A1 EP 0435973 A1 EP0435973 A1 EP 0435973A1 EP 19900908460 EP19900908460 EP 19900908460 EP 90908460 A EP90908460 A EP 90908460A EP 0435973 A1 EP0435973 A1 EP 0435973A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arrangement according
- flow
- ring channel
- air
- fuel
- 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
- 238000000889 atomisation Methods 0.000 title claims description 8
- 239000000446 fuel Substances 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 230000003247 decreasing effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001052 transient effect Effects 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
- 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 an arrangement for atomizing liquids according to the preamble of the main claim.
- the invention therefore lies in the field of atomization of liquids by means of compressed air extracted from the vacuum or by using the negative pressure in the intake manifold of internal combustion engines.
- Fuels in particular fuels, which are to be processed into combustion mixtures for internal combustion engines with external mixture formation, are used as liquids.
- the vacuum in the intake manifold ends so that the air expanding at an annular gap detects the fuel jet emerging from the mouth of the injection valve with high speed. The large inductance between air and fuel leads to atomization.
- this type of atomization is disadvantageous in that the fine droplets resulting from the atomization process are accelerated to high speed in the air stream, so that they are sometimes no longer able to follow a flow deflection of the intake air.
- the droplets hit the suction pipe wall and contribute to the formation of the wall film.
- For the eccentricity of the force Only very small tolerances are permitted in the jet of air. Excessive manufacturing tolerances in this area lead to a lateral deflection of the atomized fuel jet, which in turn results in an increased fuel misalignment between the individual cylinders of a multi-cylinder machine in the case of central injection.
- a fuel injection device for internal combustion engines in which the opening of an injection valve is directed into an auxiliary air nozzle, the fuel and the air being processed in a swirl chamber formed therein by swirling.
- the air is supplied tangentially into the interior of the auxiliary air nozzle.
- the arrangement according to the invention for atomizing liquids with the characteristic features of the main claim has the advantage that the liquid droplets from the arrangement are able to follow the flow of air through the suction air and they are able to follow the flow of the suction air.
- the misalignment of fuel between the individual cylinders of a multi-cylinder internal combustion engine can e.g. In the case of central injection, this is particularly effective in the full load range.
- the amount of liquid in the form of a wall film is also reduced, so that the transient behavior is positively influenced by the internal combustion force.
- the atomized liquid jet emerging from the arrangement has a very good jet symmetry, so that there is no misalignment, in particular lateral deflection of the liquid jet. This is particularly important in the case of internal combustion engines.
- FIG. 1 shows the sectional illustration of a central injection unit with the arrangement of the invention
- FIG. 2 shows a detail of FIG. 1 namely the arrangement according to the invention
- FIG. 3 is a section along the line AA of FIG. 2 and FIG Section along the line BB of FIG. 2
- FIGS. 5 and 6 are axonometric representations of the air and liquid flow through the arrangement according to the invention.
- the invention is explained on the basis of a central injection unit, but is not restricted to use with such a central injection unit.
- the invention is also not limited to fuel atomization, but any liquid that needs to be atomized can be used in the present invention.
- the central injection unit according to Fig.l has an injection valve 1 and is mounted directly on the intake manifold and supplies the engine finely prepared fuel.
- it consists of a pressure regulator 2 connected to it via a line 7 and a throttle valve housing 9 with a throttle valve 10.
- the structure of the central injection unit is known and will not be explained further here.
- an intermediate ring 6 which encloses an arrangement 11 according to the invention, to which two air lines lead.
- This arrangement 11 according to the invention is shown in more detail in FIG.
- the injection valve has a valve seat, via which the valve is opened and closed.
- a housing 12 is arranged on the injection valve 1 with an annular disk 13, the housing 12 being provided in various planes with annular air supply lines 4, 5, which are separated from one another by a web 21.
- These air inlets 4, 5 receive compressed air from the air lines 30, 31.
- a separating ring 22 is inserted into the housing 12, in which at least one upper slot 15 connected to the upper air inlet 4 and at least one with the lower air supply 5 connected lower slot 16 are machined.
- 3 and 4 also show, two upper slots ⁇ and two lower slots 16 are provided in the embodiment shown.
- Each upper slot 15 of the upper level opens tangentially into an upper ring channel 23 and each lower slot 16 of the lower level tangentially opens into a lower ring channel 24.
- the slots 15, 16 taper in the circumferential direction.
- the ring channels 23 and 24 taper with decreasing radius in the axial direction up to an upper gap 25 or up to a lower gap 26 and open into a central cylinder opening 14, which is also supplied with the fuel jet.
- the gap 25 and 26 are also ring-shaped.
- the upper slot 15, the upper ring channel 23 and the upper gap 25 are moved towards the top by the ring disc 13 limited.
- the annular disc 13 has a through opening 29 aligned with the valve mouth 3, which is followed by the gap 25 in the flow direction, the cylinder opening 14 and the lower gap 26.
- the cylinder opening 14 extends axially through the separating ring 22 into the housing 12.
- the fuel jet which enters the cylinder opening 14 in alignment with this through the valve mouth 3, is caused by the vortex flow (air vortex) emerging from the upper gap 25 of the upper vertebrae and the momentum exchange between air and fuel takes place here.
- the direction of air flow via the lower slots 16 in the lower vortex plane is oppositely directed to the air flow direction via the upper slot 15 in the upper plane of the vertebra, so that in the lower vortex plane a fuel is released to the upper vortex plane.
- the velocity component of the air flow increases in a radial and tangential direction with a decreasing radius of the ring channels 23, 24 and a desired high speed of the air vortices can be achieved in this way .
- FIG. 5 The upper vertebral plane is shown in FIG. 5 and the lower vertebral plane in FIG. 6. It can be seen in FIG. 5 that an air stream 17 is brought clockwise over the upper slits 15 into the annular channel 23, swirls the fuel jet 19 over the upper gap 25 and then leaves the upper vortex flow through the cylinder opening 14. 6, the air is supplied via the lower slots 16 and the air flow 18 now swirls around the fuel jet 19 in the clockwise direction. the opposite direction and also leaves the underside of the vortex through the cylinder opening 14. If the eddy currents of the air streams 17 and 18 are the same size, the rotation of the total flow downstream of the lower gap 26 is then lifted and a tube 26 is removed Fuel-air mixture supplied.
- the ratio of the cross-sectional area of the vertical cylinder opening 14 to the respective sum of the areas of the slots 15, 10 16 is chosen to be correspondingly large, then it is guaranteed that the speed component remains in the direction of the longitudinal axis. This also ensures that the exit velocity of the fuel droplets from the exit opening 28 is small.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Nozzles (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3921079A DE3921079A1 (de) | 1989-06-28 | 1989-06-28 | Anordnung zur zerstaeubung |
DE3921079 | 1989-06-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0435973A1 true EP0435973A1 (de) | 1991-07-10 |
EP0435973B1 EP0435973B1 (de) | 1992-10-14 |
Family
ID=6383711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90908460A Expired - Lifetime EP0435973B1 (de) | 1989-06-28 | 1990-05-30 | Anordnung zur zerstäubung |
Country Status (9)
Country | Link |
---|---|
US (1) | US5178331A (de) |
EP (1) | EP0435973B1 (de) |
JP (1) | JPH04501450A (de) |
KR (1) | KR920701666A (de) |
AU (1) | AU621492B2 (de) |
BR (1) | BR9006834A (de) |
DE (2) | DE3921079A1 (de) |
ES (1) | ES2036115T3 (de) |
WO (1) | WO1991000426A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998011341A1 (de) | 1996-09-12 | 1998-03-19 | Robert Bosch Gmbh | Ventil, insbesondere brennstoffeinspritzventil |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5255658A (en) * | 1990-10-12 | 1993-10-26 | Coltec Industries Inc. | System and apparatus to improve atomization of injected fuel |
DE9318544U1 (de) * | 1993-12-03 | 1994-01-27 | Rubenberger, Karl, 85435 Erding | Wirbelkammerzerstäuber |
US5823582A (en) * | 1995-08-24 | 1998-10-20 | Harrow Products, Inc. | Electromagnetically-managed latching exit bar |
AU755989B2 (en) * | 1999-05-20 | 2003-01-02 | Kos Life Sciences, Inc. | Low spray force, low retention atomization system |
DE10041440A1 (de) * | 2000-08-23 | 2002-03-07 | Bosch Gmbh Robert | Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe |
WO2002097259A1 (en) * | 2001-06-01 | 2002-12-05 | Vaporate Pty Ltd | Fuel delivery system |
US20030234455A1 (en) * | 2002-06-24 | 2003-12-25 | Mieney Harry R. | Non-contacting fuel vaporizer |
EP1384880A3 (de) * | 2002-07-24 | 2004-12-15 | Delphi Technologies, Inc. | Berührungsfreier Brennstoffverdampfer |
EP4094019A4 (de) * | 2020-01-22 | 2023-07-05 | Turbogen Ltd. | Zerstäuber für gasturbinentriebwerk |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1451063A (en) * | 1923-04-10 | Burner | ||
US2623786A (en) * | 1948-10-01 | 1952-12-30 | Rudolf L Wille | Method for atomizing fuel and nozzle for carrying out this method |
US3680793A (en) * | 1970-11-09 | 1972-08-01 | Delavan Manufacturing Co | Eccentric spiral swirl chamber nozzle |
US3771728A (en) * | 1971-03-17 | 1973-11-13 | F Polnauer | Spray nozzles with spiral flow of fluid and method of constructing the same |
DE2137030A1 (de) * | 1971-07-23 | 1973-02-01 | Werner Dipl Phys Kraus | Kraftstoffeinspritzvorrichtung |
US3811278A (en) * | 1973-02-01 | 1974-05-21 | Gen Electric | Fuel injection apparatus |
US3853273A (en) * | 1973-10-01 | 1974-12-10 | Gen Electric | Axial swirler central injection carburetor |
CA1082427A (en) * | 1977-09-01 | 1980-07-29 | Hassan A. Hamza | Method and an apparatus for intimately contacting a substance in fluid form with a liquid |
JPS5510016A (en) * | 1978-07-06 | 1980-01-24 | Nissan Motor Co Ltd | Fuel injection valve |
JPS57183559A (en) * | 1981-05-06 | 1982-11-11 | Hitachi Ltd | Fuel injection valve |
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 |
DE3642122C1 (de) * | 1986-12-10 | 1988-06-09 | Mtu Muenchen Gmbh | Brennstoffeinspritzvorrichtung |
-
1989
- 1989-06-28 DE DE3921079A patent/DE3921079A1/de not_active Withdrawn
-
1990
- 1990-05-30 BR BR909006834A patent/BR9006834A/pt not_active IP Right Cessation
- 1990-05-30 JP JP2507899A patent/JPH04501450A/ja active Pending
- 1990-05-30 KR KR1019910700217A patent/KR920701666A/ko not_active Application Discontinuation
- 1990-05-30 AU AU56697/90A patent/AU621492B2/en not_active Ceased
- 1990-05-30 ES ES199090908460T patent/ES2036115T3/es not_active Expired - Lifetime
- 1990-05-30 US US07/656,094 patent/US5178331A/en not_active Expired - Fee Related
- 1990-05-30 EP EP90908460A patent/EP0435973B1/de not_active Expired - Lifetime
- 1990-05-30 DE DE9090908460T patent/DE59000361D1/de not_active Expired - Lifetime
- 1990-05-30 WO PCT/DE1990/000402 patent/WO1991000426A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9100426A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998011341A1 (de) | 1996-09-12 | 1998-03-19 | Robert Bosch Gmbh | Ventil, insbesondere brennstoffeinspritzventil |
US6089473A (en) * | 1996-09-12 | 2000-07-18 | Robert Bosch Gmbh | Valve, in particular a fuel injection valve |
Also Published As
Publication number | Publication date |
---|---|
DE59000361D1 (de) | 1992-11-19 |
KR920701666A (ko) | 1992-08-12 |
WO1991000426A1 (de) | 1991-01-10 |
AU621492B2 (en) | 1992-03-12 |
US5178331A (en) | 1993-01-12 |
AU5669790A (en) | 1991-01-17 |
EP0435973B1 (de) | 1992-10-14 |
ES2036115T3 (es) | 1993-05-01 |
DE3921079A1 (de) | 1991-01-03 |
BR9006834A (pt) | 1991-08-06 |
JPH04501450A (ja) | 1992-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0704620A2 (de) | Brennstoffeinspritzvorrichtung | |
EP0435973A1 (de) | Anordnung zur zerstäubung. | |
DE19752245C2 (de) | Zweistoffdüse und Niederdruck-Zerstäubungsvorrichtung mit mehreren benachbarten Zweistoffdüsen | |
EP0859910A1 (de) | Ventil, insbesondere brennstoffeinspritzventil | |
DE8906889U1 (de) | Wirbelkammerzerstäuber | |
DE2722226A1 (de) | Vorrichtung zum zerstaeuben von fluessigkeiten und zum mischen von gasen | |
DE4035312A1 (de) | Vorrichtung zur einspritzung eines brennstoff-gas-gemisches | |
EP0910776B1 (de) | Brenner mit zerstäuberdüse | |
DE2819474A1 (de) | Treibstoff-versorgungseinrichtung fuer verbrennungsmotoren | |
DE102008041441A1 (de) | Niederdruckkraftstoffeinspritzdüse | |
DE3819899C1 (en) | Apparatus for generating a homogeneous mixture from a first and second medium | |
CH670296A5 (en) | Gas turbine fuel nozzle - has externally-supported premixing chamber for liq. fuel and air | |
DE3600154A1 (de) | Luftzerstaeubungsdrosselkoerper | |
WO1992014052A1 (de) | Vorrichtung zur einspritzung eines brennstoff-gas-gemisches | |
EP0674941B1 (de) | Vorrichtung zur Bildung einer Öl-Wasser-Emulsion | |
DE9402811U1 (de) | Wirbelkammerzerstäuber | |
EP0473736A1 (de) | Vorrichtung zur einspritzung eines brennstoff-gas-gemisches. | |
EP0149047A2 (de) | Zusatzluftvorrichtung für Brennkraftmaschinen | |
DE4215122C1 (de) | ||
DE3600153A1 (de) | Kraftstoffeinspritzdrosselkoerper | |
DE19519838C2 (de) | Verfahren zur Beeinflussung der Ausrichtung von Brennstoff an einem Brennstoffeinspritzventil und Brennstoffeinspritzventil | |
DE8521912U1 (de) | Mehrloch-Einspritzdüse für eine Diesel-Brennkraftmaschine | |
DE3405400C2 (de) | ||
DE3311267A1 (de) | Kraftstoffeinspritzvorrichtung, insbesondere fuer eine mehrzylindrige fremdgezuendete brennkraftmaschine | |
WO1991014093A1 (de) | Vorrichtung zur einspritzung eines brennstoff-gas-gemisches |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19901220 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT SE |
|
17Q | First examination report despatched |
Effective date: 19910912 |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT SE |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 59000361 Country of ref document: DE Date of ref document: 19921119 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2036115 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19940516 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19940523 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19940525 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19940530 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19940727 Year of fee payment: 5 |
|
EAL | Se: european patent in force in sweden |
Ref document number: 90908460.0 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950530 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19950531 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19950531 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950530 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19960201 |
|
EUG | Se: european patent has lapsed |
Ref document number: 90908460.0 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19960229 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 19990405 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050530 |