EP1440238A1 - Brennstoffeinspritzventil - Google Patents
BrennstoffeinspritzventilInfo
- Publication number
- EP1440238A1 EP1440238A1 EP02769886A EP02769886A EP1440238A1 EP 1440238 A1 EP1440238 A1 EP 1440238A1 EP 02769886 A EP02769886 A EP 02769886A EP 02769886 A EP02769886 A EP 02769886A EP 1440238 A1 EP1440238 A1 EP 1440238A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection valve
- valve
- projection
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 66
- 238000002347 injection Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 title claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000005476 soldering Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
-
- 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
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating 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
- F02M61/16—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
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- an outwardly opening fuel injector which has a conical sealing seat.
- the valve needle has a central bore which opens into a pressure chamber upstream of the sealing seat.
- An actuator which is designed as a piezoelectric actuator, is supported on the one hand against a nozzle body and on the other hand against a pressure shoulder which is positively connected to the valve needle.
- a return spring holds the valve needle in a closed position. When the actuator is excited, the valve needle is opened against the closing force of the return spring and the fuel is sprayed off.
- a disadvantage of the fuel injector known from DE 195 34 445 AI is in particular that the fuel jet injected into the combustion chamber of the internal combustion engine is conical and symmetrical to a longitudinal axis of the fuel injector. An oblique injection and an asymmetrical deformation of the A cone beam, for example to compensate for a narrow installation position of the fuel injector, is not possible here.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that an oblique injection at any angle ⁇ and a targeted deformation of the injected mixture cloud is possible by simple measures on the contour of the nozzle body.
- the projection is annular and has a recess, the longitudinal axis of which is inclined with respect to a longitudinal axis of the fuel injector. Any injection angle can be achieved by a more or less strong inclination of the axes against each other.
- the projection can also be designed in the form of one or more pins which deform the mixture cloud in the desired manner.
- the projection or the pegs are either simply formed in one piece with the nozzle body or fixed to it by means of a suitable technique such as welding or soldering. drawing
- FIG. 1 shows a schematic section through a first exemplary embodiment of a fuel injector designed according to the invention
- FIG. 2 shows a schematic section through a second exemplary embodiment of a fuel injector designed according to the invention
- FIG. 3 shows a schematic section from the exemplary embodiment of a fuel injection valve according to the invention shown in FIG. 2 in the region III in FIG. 2 in a rotated view
- FIG. 4 shows a schematic illustration of a mixture cloud injected into the combustion chamber by means of the fuel injector designed according to the invention shown in FIGS. 2 and 3.
- a first exemplary embodiment of a fuel injection valve 1 according to the invention shown in FIG. 1 is in the form of a fuel injection valve 1 for fuel injection systems of mixture-compressing, spark-ignition internal combustion engines.
- the fuel injection valve 1 is particularly suitable for injecting fuel directly into a combustion chamber (not shown) of an internal combustion engine.
- the fuel injector 1 consists of a housing body 2 and a nozzle body 3, in which a valve needle 4 is arranged.
- the valve needle 4 stands with a valve closing body 5 in operative connection with a
- Valve seat surface 6 cooperates to form a sealing seat.
- Fuel injector 1 is in the
- the fuel injector 1 has an actuator 7, which is designed as a piezoelectric actuator 7 in the embodiment.
- the actuator is supported on the one hand on the housing body and on the other hand on a shoulder 8 which is operatively connected to the valve needle 4. Downstream of the shoulder 8 is one
- Nozzle body 3 supports.
- the valve needle 4 has a fuel channel 10, through which the fuel fed through an inlet-side central fuel supply 11 is guided to the sealing seat.
- a swirl chamber 12 is formed, into which the fuel channel 10 opens.
- the shoulder 8 In the idle state of the fuel injector 1, the shoulder 8 is acted upon by the force of the return spring 9 against the stroke direction so that the valve closing body 5 is held in sealing contact with the valve seat surface 6.
- the piezoelectric actuator 7 When the piezoelectric actuator 7 is excited, it expands in the axial direction against the spring / force of the return spring 9, so that the shoulder 8 is moved in the stroke direction with the valve needle 4, which is non-positively connected to the shoulder 8.
- the valve closing body 5 lifts off from the valve seat surface 6, and the fuel passed through the fuel channel 10 is sprayed off.
- the fuel injection valve 1 has at a downstream end 13 a projection 14 which at least partially encompasses the valve closing body 5.
- the projection 14 is designed such that it completely surrounds the valve closing body 5 and thereby forms an annular structure.
- the projection 14 has a recess 18, the longitudinal axis 19 of which is inclined with respect to a longitudinal axis 20 of the fuel injector 1.
- an angle ⁇ defining the spray direction of the fuel injection valve 1 can be set as desired. Inclined-injection fuel injection valves 1 are particularly important where the installation space is limited or a spark plug, which must not be sprayed directly, is arranged in the immediate vicinity of the fuel injection valve 1.
- the recess 18 has an obliquely conical shape and widens towards the combustion chamber.
- the projection 14 can be formed in one piece with the outflow-side end 13 or with the nozzle body 3 of the fuel injection valve 1, as shown in the first exemplary embodiment, or can be retrofitted using a suitable technique such as soldering or welding.
- the fuel injection valve 1 in the second exemplary embodiment can be designed identically to the first exemplary embodiment, so that a repetitive description of components already explained is unnecessary.
- the projection 14, which in the first exemplary embodiment forms an annular structure is only in the form of a pin 17 at one point on the downstream end 13 of the fuel injection valve 1.
- FIG. 3 shows the outflow-side end 13 of the fuel injection valve 1 in accordance with the section designated III in FIG. 2 in a view rotated by 90 °, which illustrates the expansion of the pin 17.
- the pin 17 can either be formed in one piece with the nozzle body 3 or can be fixed to it subsequently, for example by means of welding or soldering.
- FIG. 4 shows a mixture cloud 15 which is injected into the combustion chamber of the internal combustion engine by means of the exemplary embodiment of the fuel injection valve 1 according to the invention shown in FIG. 2. Due to the shielding effect of the pin 17, the mixture cloud 15 has a dent 16 in this area, which can be arranged, for example, in such a way that a spark plug arranged in the vicinity of the fuel injection valve 1 is not directly injected, as a result of which coking of the spark plug is reduced.
- the mixture cloud 15 can also be further deformed by the arrangement of a plurality of pins 17 at any point on the end 13 of the fuel injection valve 1 on the injection side, for example if there are several spark plugs or the arrangement of the inlet and outlet valves makes this appear necessary.
- the invention is not limited to the illustrated embodiments and z. B. also -for Electromagnetically actuated fuel injection valves 1 can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10152415 | 2001-10-24 | ||
| DE10152415A DE10152415A1 (de) | 2001-10-24 | 2001-10-24 | Brennstoffeinspritzventil |
| PCT/DE2002/003073 WO2003038272A1 (de) | 2001-10-24 | 2002-08-22 | Brennstoffeinspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1440238A1 true EP1440238A1 (de) | 2004-07-28 |
| EP1440238B1 EP1440238B1 (de) | 2011-10-12 |
Family
ID=7703529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02769886A Expired - Lifetime EP1440238B1 (de) | 2001-10-24 | 2002-08-22 | Brennstoffeinspritzventil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7581686B2 (de) |
| EP (1) | EP1440238B1 (de) |
| JP (1) | JP4460895B2 (de) |
| DE (1) | DE10152415A1 (de) |
| WO (1) | WO2003038272A1 (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259799A1 (de) * | 2002-12-19 | 2004-07-29 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| DE10359302A1 (de) * | 2003-12-17 | 2005-07-21 | Robert Bosch Gmbh | Ventilkörper mit Mehrfachkegelgeometrie am Ventilstitz |
| DE102004004169A1 (de) | 2004-01-28 | 2005-08-18 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| DE102004033842A1 (de) * | 2004-07-13 | 2006-02-09 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| US8915453B1 (en) | 2007-06-01 | 2014-12-23 | Raymond C. Sherry | Expansion nozzle with continuous rotating stem |
| US8097128B1 (en) * | 2007-06-01 | 2012-01-17 | Sherry Raymond C | Method and apparatus for purifying water |
| EP2003331A1 (de) * | 2007-06-12 | 2008-12-17 | Siemens Aktiengesellschaft | Ventilanordnung für ein Einspritzventil und Einspritzventil |
| DE102009000186A1 (de) * | 2009-01-13 | 2010-07-15 | Robert Bosch Gmbh | Vorrichtung zur Einspritzung von Kraftstoff |
| US7942349B1 (en) * | 2009-03-24 | 2011-05-17 | Meyer Andrew E | Fuel injector |
| AU2011274314B2 (en) * | 2010-06-30 | 2014-08-07 | Orbital Australia Pty Ltd | Fuel injector icing |
| KR101144482B1 (ko) | 2010-10-06 | 2012-05-11 | (주)제너진 | 엔진의 직분사 인젝터 |
| EP2476874B1 (de) * | 2011-01-13 | 2013-04-03 | Delphi Technologies Holding S.à.r.l. | Einspritzvorrichtung für ein Reagens |
| CN103534476B (zh) * | 2011-05-13 | 2016-12-28 | 安德鲁·E·迈耶 | 燃料喷射器 |
| US10273167B1 (en) | 2015-02-12 | 2019-04-30 | Raymond C. Sherry | Fluid-operated nozzle |
| US10570865B2 (en) * | 2016-11-08 | 2020-02-25 | Ford Global Technologies, Llc | Fuel injector with variable flow direction |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1310970A (en) * | 1919-07-22 | stsottd | ||
| US2860780A (en) * | 1954-12-06 | 1958-11-18 | Kloeckner Humboldt Deutz Ag | Fuel injection valve |
| DE1176926B (de) | 1961-06-15 | 1964-08-27 | Bosch Gmbh Robert | Ventil zur Einspritzung von Kraftstoff in das Saugrohr von Brennkraftmaschinen |
| DE2557772A1 (de) * | 1975-12-20 | 1977-06-23 | Kloeckner Humboldt Deutz Ag | Brennstoffeinspritzventil |
| US4421280A (en) | 1981-09-28 | 1983-12-20 | The Bendix Corporation | Fuel injector |
| DE3300670A1 (de) | 1982-01-23 | 1983-08-04 | Lucas Industries P.L.C., Birmingham, West Midlands | Kraftstoffeinspritzduese |
| IT1166995B (it) * | 1982-11-25 | 1987-05-06 | Lucas Ind Plc | Ugello di iniezione di combustibile |
| CA1279798C (en) | 1985-07-19 | 1991-02-05 | Peter William Ragg | Fuel injection |
| DE3734737A1 (de) | 1986-10-14 | 1988-04-21 | Orbital Eng Pty | Brennstoffeinspritzsystem und mit diesem ausgeruestete verbrennungsmaschine |
| JPH025753A (ja) * | 1988-06-23 | 1990-01-10 | Aisan Ind Co Ltd | 燃料噴射弁とそのノズル |
| JP2767005B2 (ja) | 1990-11-14 | 1998-06-18 | トヨタ自動車株式会社 | エアブラスト弁 |
| DE4405921A1 (de) | 1994-02-24 | 1995-08-31 | Fritz Prof Dr Ing Eisfeld | Einspritzdüse |
| DE4408553C1 (de) | 1994-03-14 | 1995-10-05 | Bernd Scheffel | Vorrichtung zur Gemischeinblasung für eine Brennkraftmaschine |
| DE4421280C2 (de) | 1994-06-22 | 1998-04-09 | Krupp Ag Hoesch Krupp | Strangpreßprofil |
| DE4441092A1 (de) | 1994-11-18 | 1996-05-23 | Bosch Gmbh Robert | Ventil zur Einbringung von Kraftstoff oder Kraftstoff-Luft-Gemisch |
| DE19534445C2 (de) | 1995-09-16 | 1998-07-30 | Man Nutzfahrzeuge Ag | Einspritzventil für Brennkraftmaschinen |
| DE19843570A1 (de) | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| JP2976973B1 (ja) | 1998-09-29 | 1999-11-10 | トヨタ自動車株式会社 | 内燃機関用燃料噴射弁 |
| JP4055315B2 (ja) | 1999-03-17 | 2008-03-05 | 株式会社日立製作所 | 燃料噴射弁およびこれを搭載した内燃機関 |
| JP4179855B2 (ja) | 2002-11-22 | 2008-11-12 | トヨタ自動車株式会社 | 燃料電池システム |
-
2001
- 2001-10-24 DE DE10152415A patent/DE10152415A1/de not_active Withdrawn
-
2002
- 2002-08-22 US US10/450,963 patent/US7581686B2/en not_active Expired - Fee Related
- 2002-08-22 EP EP02769886A patent/EP1440238B1/de not_active Expired - Lifetime
- 2002-08-22 JP JP2003540519A patent/JP4460895B2/ja not_active Expired - Fee Related
- 2002-08-22 WO PCT/DE2002/003073 patent/WO2003038272A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03038272A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4460895B2 (ja) | 2010-05-12 |
| US7581686B2 (en) | 2009-09-01 |
| WO2003038272A1 (de) | 2003-05-08 |
| EP1440238B1 (de) | 2011-10-12 |
| DE10152415A1 (de) | 2003-06-18 |
| US20040075001A1 (en) | 2004-04-22 |
| JP2005507054A (ja) | 2005-03-10 |
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