EP0367777A1 - Einspritzventil. - Google Patents
Einspritzventil.Info
- Publication number
- EP0367777A1 EP0367777A1 EP88905670A EP88905670A EP0367777A1 EP 0367777 A1 EP0367777 A1 EP 0367777A1 EP 88905670 A EP88905670 A EP 88905670A EP 88905670 A EP88905670 A EP 88905670A EP 0367777 A1 EP0367777 A1 EP 0367777A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- injection valve
- opening
- peripheral
- central opening
- nozzle
- 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
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
- F02M61/18—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
- 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
- F02M51/0667—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 acting as a valve or having a short valve body attached thereto
-
- 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
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
Definitions
- the invention relates to an injection valve according to the preamble of claim 1. It is based on the object of designing it in such a way that the amount of fuel sprayed evaporates better and faster.
- FIG. 2 shows a partial view of the nozzle body according to FIG. 1 in a greatly enlarged illustration
- FIG. 4 shows a partial section corresponding to FIG. 2 through a second embodiment of a valve body
- FIG. 5 shows a partial section along line VV in FIG. 4
- FIG. 6 shows a partial section like FIG. 4 through a further exemplary embodiment, which differs from that according to FIG. 4 through another connection between the nozzle body and valve body
- FIG. 7 schematically shows the envelope surface of the sprayed fuel that can be achieved with an injection valve according to the invention
- 8 shows a section through the fuel jet according to FIG 6 along line VIII-VIII.
- the injection valve shown in FIG. 1 has a conventional structure. Only part of the housing 1 is shown, the interior 10 of which is closed at one end by a valve body 5. This has a line 52 concentric to a main axis H, which passes through the valve body from the inside to the outside and which is surrounded on the inside by an annular valve seat 51.
- a guide pin 2 is arranged concentrically to the main axis H, on which an armature 3 is slidably mounted, which carries a flat closing part 4 at one end. Armature 3 with closing part 4 are pressed down by a spring 6, so that the closing part 4 is seated on the valve seat 51 and thus prevents the escape of fuel from the interior through the line 52.
- the armature 3 is pulled slightly upwards with the aid of an electromagnet (not shown) and the valve is thereby opened. Without a special measure, a compact fuel jet is created with an essentially circular cross section and a relatively small surface area.
- the nozzle opening 53 at the end of the line 52 has a special design, which can be clearly seen in particular from FIGS. 3 and 5: It is formed from a circular central opening 530, 530 'and from three peripheral openings 531, 531' which form the Expand the central opening 530, 530 'to the outside and which lie in an annular zone 540, 540' which extends between the central opening 530, 530 'and the end of the line 52.
- the ring zone includes an angle of inclination ⁇ which is less than 90 ° and preferably between 30 ° and 60 °: the smaller this angle, the greater the jet cone of the sprayed fuel.
- the peripheral openings 531, 531 ' are formed symmetrically to minor axes N, which have the same angular distance ⁇ of 120 ° from one another.
- Each peripheral opening 531, 531 ' is delimited at the end by a semicircular end piece 5310, 5310' and two adjoining, mutually opposite side edges 5311.
- These side edges - as just shown in FIG. 3 - of adjacent peripheral openings each intersect at a point on the circular central opening 530: This results in approximately triangular guide tabs 5401 within the ring zone 540 between adjacent peripheral openings 531, by means of which the diameter of the entire nozzle opening is reduced compared to that of the line 52.
- valve body 5 and the nozzle body 54 with the nozzle opening 53 are one piece and, because of the stress on the valve seat 51, are made of stainless steel.
- a separate nozzle body 54 ', 54 " is provided, which is preferably a die-cast part (die-cast zinc) and can be easily manufactured with high accuracy.
- the nozzle opening 53 ' is again formed by a circular central opening 530' and three peripheral openings 531 'extending radially outward from it, each of which has a semicircular end piece 5310' at the end.
- This is followed by side edges 5311 ', which - in contrast to the exemplary embodiment described above - represent circular arcs.
- the radius of each peripheral opening is smaller than in the previously explained exemplary embodiment, so that larger peripheral tabs 540 'are formed between the side edges 5311', adjacent peripheral openings 531 '.
- the guide tabs preferably occupy at least 30% of the area of the ring zone, the radial width of the ring zone being between 20% and 50% of the radius of the line 52, 52 '.
- valve body 5 and nozzle body 54 are formed in one piece, the shape of this part can be realized using known manufacturing techniques: the valve body can be cast or cold-formed. A combination of the two production steps is particularly expedient, a cast valve body being given its final shape and the exact dimensions by a subsequent cold working. It is also possible to plastically form a valve body with a continuous cylindrical line using a plunger attached to the nozzle opening, that is to say to press material from the area around the nozzle opening into the latter. It should be borne in mind that the diameter of the line 52 is of the order of magnitude of only 1 mm, so that FIGS. 2 to 6 show an approximately 40-fold enlargement of reality.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8709111U | 1987-07-01 | ||
DE8709111U DE8709111U1 (de) | 1987-07-01 | 1987-07-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0367777A1 true EP0367777A1 (de) | 1990-05-16 |
EP0367777B1 EP0367777B1 (de) | 1991-02-20 |
Family
ID=6809637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88905670A Revoked EP0367777B1 (de) | 1987-07-01 | 1988-06-30 | Einspritzventil |
Country Status (4)
Country | Link |
---|---|
US (1) | US4986478A (de) |
EP (1) | EP0367777B1 (de) |
DE (2) | DE8709111U1 (de) |
WO (1) | WO1989000244A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT214617Z2 (it) * | 1988-06-23 | 1990-05-09 | Weber Srl | Ugello per una valvola di dosatura e di polverizzazione del carburanteper un dispositivo di alimentazione di un motore a combustione interna |
EP0348786B1 (de) * | 1988-06-28 | 1992-08-26 | Siemens Aktiengesellschaft | Elektromagnetisches Kraftstoffeinspritzventil |
KR930004967B1 (ko) * | 1988-07-13 | 1993-06-11 | 가부시기가이샤 히다찌세이사꾸쇼 | 전자식 연료 분사밸브 |
IT1231875B (it) * | 1989-03-14 | 1992-01-14 | Weber Srl | Perfezionamento nel circuito di alimentazione del carburante in una valvola per l'iniezione del carburante per un motore a combustione interna ad azionamento elettromagnetico |
DE3942306A1 (de) * | 1989-12-21 | 1991-06-27 | Bosch Gmbh Robert | Elektromagnetisch betaetigbares ventil |
JP2559515B2 (ja) * | 1990-02-23 | 1996-12-04 | 株式会社日立製作所 | 燃料噴射弁装置とその製造方法 |
JP3002286B2 (ja) * | 1991-03-15 | 2000-01-24 | ヤマハ発動機株式会社 | 燃料噴射式4サイクルエンジンの吸気装置 |
IT1250846B (it) * | 1991-10-11 | 1995-04-21 | Weber Srl | Valvola dosatrice e polverizzatrice di carburante ad azionamento elettromagnetico avente dimensioni molto ridotte |
DE19937961A1 (de) * | 1999-08-11 | 2001-02-15 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zur Herstellung von Austrittsöffnungen an Ventilen |
US6625971B2 (en) * | 2001-09-14 | 2003-09-30 | United Technologies Corporation | Fuel nozzle producing skewed spray pattern |
US6659074B2 (en) * | 2002-05-08 | 2003-12-09 | General Motors Corporation | Spark ignition direct injection engine with shaped multihole injectors |
JP6429461B2 (ja) * | 2013-05-13 | 2018-11-28 | 株式会社エンプラス | 燃料噴射装置用ノズルプレート |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE344270C (de) * | 1920-08-15 | 1921-11-21 | Hille Werke Ag | Brennstoffduesenscheibe fuer OElmotoren |
US4099494A (en) * | 1976-10-19 | 1978-07-11 | Caterpillar Tractor Co. | Fuel spray |
DD134976B1 (de) * | 1978-03-16 | 1980-12-24 | Helmut Nehrig | Einspritzduese fuer brennkraftmaschinen |
IT1122430B (it) * | 1979-08-03 | 1986-04-23 | Alfa Romeo Spa | Elettroiniettore a transitori rapidi |
CA1185850A (en) * | 1982-01-11 | 1985-04-23 | Essex Group, Inc. | Electromagnetic fuel injector with improved discharge structure |
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 |
GB2144177B (en) * | 1983-07-28 | 1987-01-07 | Lucas Ind Plc | Fuel injector |
DE3411337A1 (de) | 1984-03-28 | 1985-10-10 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzventil |
DE3415905A1 (de) * | 1984-04-28 | 1985-11-07 | Daimler-Benz Ag, 7000 Stuttgart | Lochduese fuer brennkraftmaschine mit direkteinspritzung |
GB8611950D0 (en) * | 1986-05-16 | 1986-06-25 | Lucas Ind Plc | Gasoline injector |
-
1987
- 1987-07-01 DE DE8709111U patent/DE8709111U1/de not_active Expired
-
1988
- 1988-06-30 EP EP88905670A patent/EP0367777B1/de not_active Revoked
- 1988-06-30 DE DE8888905670T patent/DE3861795D1/de not_active Revoked
- 1988-06-30 US US07/466,255 patent/US4986478A/en not_active Expired - Fee Related
- 1988-06-30 WO PCT/DE1988/000396 patent/WO1989000244A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8900244A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3861795D1 (de) | 1991-03-28 |
EP0367777B1 (de) | 1991-02-20 |
DE8709111U1 (de) | 1987-09-17 |
WO1989000244A1 (en) | 1989-01-12 |
US4986478A (en) | 1991-01-22 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
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ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
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GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
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26 | Opposition filed |
Opponent name: ROBERT BOSCH GMBH Effective date: 19911112 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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27W | Patent revoked |
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