EP1066469A1 - Brennstoffeinspritzvorrichtung - Google Patents
BrennstoffeinspritzvorrichtungInfo
- Publication number
- EP1066469A1 EP1066469A1 EP99957939A EP99957939A EP1066469A1 EP 1066469 A1 EP1066469 A1 EP 1066469A1 EP 99957939 A EP99957939 A EP 99957939A EP 99957939 A EP99957939 A EP 99957939A EP 1066469 A1 EP1066469 A1 EP 1066469A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- connecting means
- injection device
- connecting piece
- injection valve
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
-
- 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
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
-
- 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
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
Definitions
- the invention is based on a fuel injection device according to the preamble of the main claim.
- fuel injection devices which have a fuel distributor on which a plurality of connecting pieces are provided for the installation of fuel injection valves.
- additional connection elements are used for the safe and possibly non-rotatable installation of the fuel injection valves in the connecting piece, which act like clips or clips in the connection area.
- Such connecting elements include a U-shaped spring clip from DE-OS 34 28 597, a C-shaped plastic clip from DE-OS 39 04 479, and a U-shaped spring clip from DE-OS 39 18 410 -OS 40 17 875 also a U-shaped spring clip, from DE-OS 44 13 914 a latchable, two-legged plastic clip, from US-PS 4,823,754 a U-shaped fastening clip and from US-PS 5,035,224 a U-shaped spring clip is known .
- All of the aforementioned fuel injection devices are characterized in that, on the one hand, the connecting element engages in a recess of the fuel injection valve and on the other hand, the locking element engages around a locking element that is in any way radially outward on the connecting piece of the fuel distributor.
- Snap springs (DE-OS 39 19 231) or locking lugs (DE-OS 195 46 441) are provided.
- the snap springs encompass a locking collar which projects radially outward on the connecting piece of the fuel distributor, while the latching lugs snap into window-like recesses in the extended connecting piece.
- the fuel injection device according to the invention with the characterizing features of the main claim has the advantage that a solid and secure connection of fuel injection valves in connection pieces of fuel distributors is made possible in a simple manner. There are no additional clamp-like or clasp-like ones for fixing the fuel injection valves
- the fuel injection device is advantageously designed in such a way that, due to interruptions in the end section of the connecting piece, the connecting means presses it radially and effectively into the recessed corresponding connecting means under radial tension.
- FIG. 1 shows a partially illustrated fuel injection device
- FIG. 2 shows a first embodiment variant of a connection piece as a section along the line II-II in FIG. 1
- FIG. 3 shows a second embodiment variant of a connection piece as a section along the line III-III in FIG. 1
- FIG 4 shows a third embodiment variant of a connection piece as a section along the line IV-IV in FIG. 1
- FIG. 5 shows a schematic and partially broken side view of the connection piece.
- the fuel injection device for internal combustion engines which is partially shown in FIG. 1, has a fuel distributor 10 made of plastic or aluminum, which carries a plurality of connecting pieces 11.
- the fuel injection valves 12 are consequently designed as so-called top feed injectors.
- the number of connecting pieces 11 and fuel injection valves 12 depends on the number of cylinders to be supplied to the internal combustion engine.
- four fuel injection valves 12 are provided, each of which is inserted in a liquid-tight manner in one of four connecting pieces 11 of the fuel distributor 10 with the aid of an upper sealing ring 14.
- the fuel injection valve 12 protrudes with its end on the injection side into a receiving bore 16 of a cylinder head 17 (direct injection) or of a receiving connector 17 formed on an intake pipe
- the fuel injection valves 12 which can be used in the fuel injection device according to the invention are, for example, electromagnetically actuable valves or valves operated with piezo actuators or magnetostrictive actuators.
- the supply opening 13 of the connecting piece 11 is, for example, stepped, the supply opening 13 having a smaller diameter near a distributor opening 20 of the fuel distributor 10 than in an area 21 of the connecting piece 11 encompassing the fuel injector 12.
- the outer diameter of the connecting piece 11 is constant over its entire length .
- the fuel injection valve 12 and the connection piece 11 are provided with corresponding connecting means 22, 23.
- Connection means 22 formed.
- This at least one connecting means 22 engages in a corresponding connecting means 23, which represents a depression, on the outer circumference of the fuel injection valve 12.
- This recessed connecting means 23 is, for example, a circumferential groove in the plastic encapsulation of the fuel injection valve 12.
- the connecting means 22 of the fuel injection device according to the invention formed on the connecting piece 11 project radially inward into the supply opening 13.
- FIG. 2 shows a first embodiment variant of a connection piece 11 as a section along the line II-II in FIG. 1, while FIG. 3 shows a second and FIG. 4 a third embodiment variant of a connection piece 11 as a section along the line III-III or the line IV -IV clarify in Figure 1.
- the sectional representations are only the cut connecting piece 11 without the fuel injector 12 that can be inserted into it.
- FIGS. 2 and 3 show two examples of a two-part connecting means 22a, 22b. Diametrically opposite are two hook-shaped in cross-section and each approx. 80 ° (FIG. 2) in
- Connecting means 22a, 22b extending in the circumferential direction are provided.
- the connecting means 22a, 22b can, however, extend just as well in an angular range from 20 ° to 120 °.
- Connecting means 23 of the fuel injection valve 12 can also be divided.
- the connecting means 22a, 22b can engage in two groove-shaped or slot-like, but not rotating connecting means 23 on the fuel injection valve 12. In this way, a very simple protection against rotation is provided.
- the two connecting means 22a, 22b need not have the same extent. If the connecting means 22a, 22b and the corresponding
- Connecting means 23 of different sizes results in an often desirable unambiguous installation position of the fuel injection valve 12 in the connecting piece 11. In this way, it is ensured without additional design means that exactly a desired installation position is realized.
- the connecting means 22 can also consist of more than two parts; three to eight connecting means 22a, 22b can also be useful.
- the connecting means 22 ' can also be designed in one piece, as can be seen in FIG. In this case, however, the connecting means 22 'in no case extends in the circumferential direction over 360 °, but for example over an angular range of 240 ° to 320 °.
- the connecting means 22, 22 x must be interrupted at least at one point or must not rotate through 360 °, it is necessary for the fuel injector 12 to be mounted in the connecting piece 11 that it also does not extend at least in the area of the connecting means 22, 22 360 ° circumferential.
- the connecting piece 11 is provided in its end section 25 facing away from the fuel distributor 10 and facing the connecting means 22, 22 with at least one interruption 26, which allows the connecting piece 11 to be slightly expanded radially.
- FIGS. 2 and 3 show connecting pieces 11 which have two interruptions 26 which are diametrically opposite. In this way, two segments of the end section 25 are formed, in the middle of which the connecting means 22 are arranged. However, the end section 25 can e.g. also be formed with three to eight interruptions 26, so that there are then correspondingly three to eight segments of the end section 25, on which in turn three to eight connecting means 22 are implemented.
- FIG. 4 shows an example of a connecting piece 11 with only one interruption 26.
- the interruptions 26 are, for example, slit-like, the axial length of the interruptions 26 being limited. Ideally, the interruptions 26 are only so long that, when the fuel injector 12 is installed in the connecting piece 11, they only start downstream of the upper sealing ring 14 and extend as far as the connecting means 22, 22 ". The interruptions 26 are therefore only immediate introduced in the lower end section 25 of the connecting piece 11, so that a complete seal by the upper sealing ring 14th is guaranteed. This configuration is illustrated in FIG. 5 by a schematic and partially broken side view of the connecting piece 11.
- the inner supply opening 13 in the region 21 or the upper sealing ring 14 have diameters, from which the at least one connecting means 22, 22 x projects further inwards towards a valve longitudinal axis 28, so that the sealing ring 14 indirectly over a certain axial distance viewed from the connecting means 22, 22 times under-grip.
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 |
---|---|---|---|
DE19902186A DE19902186A1 (de) | 1999-01-21 | 1999-01-21 | Brennstoffeinspritzvorrichtung |
DE19902186 | 1999-01-21 | ||
PCT/DE1999/003450 WO2000043668A1 (de) | 1999-01-21 | 1999-10-28 | Brennstoffeinspritzvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1066469A1 true EP1066469A1 (de) | 2001-01-10 |
EP1066469B1 EP1066469B1 (de) | 2004-10-13 |
Family
ID=7894880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99957939A Expired - Lifetime EP1066469B1 (de) | 1999-01-21 | 1999-10-28 | Brennstoffeinspritzvorrichtung |
Country Status (8)
Country | Link |
---|---|
US (1) | US6491026B1 (de) |
EP (1) | EP1066469B1 (de) |
JP (1) | JP2002535550A (de) |
KR (1) | KR20010086261A (de) |
BR (1) | BR9908987A (de) |
DE (2) | DE19902186A1 (de) |
ES (1) | ES2233087T3 (de) |
WO (1) | WO2000043668A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10145035A1 (de) * | 2001-09-13 | 2003-04-10 | Bosch Gmbh Robert | Brennstoffeinspritzsystem |
JP2004353520A (ja) | 2003-05-28 | 2004-12-16 | Mitsubishi Electric Corp | 燃料噴射装置 |
US7107969B2 (en) * | 2004-09-28 | 2006-09-19 | Ford Global Technologies, Llc | Twist-lock fuel injector assembly |
EP1793122B1 (de) * | 2005-12-02 | 2010-10-27 | Continental Automotive GmbH | Kraftstoffeinspritzvorrichtung |
US7383818B1 (en) * | 2007-04-04 | 2008-06-10 | Gm Global Technology Operations, Inc. | Fuel injector with secondary combustion seal |
US20080295806A1 (en) * | 2007-06-04 | 2008-12-04 | Caterpillar Inc. | Heat conducting sleeve for a fuel injector |
EP2083167B1 (de) * | 2008-01-23 | 2017-05-10 | Continental Automotive GmbH | Kupplungsanordnung und Verbindungsanordnung |
EP2093412B1 (de) * | 2008-02-19 | 2011-01-19 | Continental Automotive GmbH | Kupplungsvorrichtung |
EP2093413B1 (de) * | 2008-02-19 | 2011-01-12 | Continental Automotive GmbH | Kupplungsvorrichtung |
DE102008055105A1 (de) * | 2008-12-22 | 2010-07-01 | Robert Bosch Gmbh | Brennstoffeinspritzvorrichtung |
JP4692663B2 (ja) * | 2009-03-31 | 2011-06-01 | 株式会社デンソー | コネクタ |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3010613A1 (de) * | 1980-03-20 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage |
DE3428597C2 (de) | 1984-08-02 | 1986-11-27 | Bayerische Motoren Werke AG, 8000 München | Verbindung zweier koaxial hintereinander angeordneter Rohrabschnitte, insbesondere einer Einspritzdüse mit dem koaxial angeordneten Anschlußstutzen einer Einspritzleitung |
JPS63125171U (de) | 1987-02-09 | 1988-08-16 | ||
DE3904479A1 (de) | 1989-02-15 | 1990-08-16 | Bosch Gmbh Robert | Verbindungselement |
DE3918410A1 (de) | 1989-06-06 | 1990-12-13 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen |
DE3919231C2 (de) * | 1989-06-13 | 1997-03-06 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
US4950171A (en) * | 1989-08-11 | 1990-08-21 | Itt Corporation | Fuel injector connector system |
US4991557A (en) * | 1989-08-21 | 1991-02-12 | Siemens-Bendix Automotive Electronics L.P. | Self-attaching electromagnetic fuel injector |
DE4017875C2 (de) | 1990-06-02 | 1999-02-04 | Bosch Gmbh Robert | Brennstoffeinspritzeinrichtung für Brennkraftmaschinen |
US5035224A (en) | 1990-07-06 | 1991-07-30 | Siemens Automotive L.P. | Clip retention of a split-stream fuel injector to a fuel rail cup including circumferential locator |
US5394850A (en) * | 1993-11-19 | 1995-03-07 | Siemens Electric Limited | Top-feed fuel injector mounting in an integrated air-fuel system |
DE4413914A1 (de) | 1994-04-21 | 1995-10-26 | Bosch Gmbh Robert | Brennstoffeinspritzeinrichtung |
US5616037A (en) * | 1995-08-04 | 1997-04-01 | Siemens Automotive Corporation | Fuel rail with combined electrical connector and fuel injector retainer |
DE19546441A1 (de) | 1995-12-13 | 1997-06-19 | Bosch Gmbh Robert | Brennstoffverteiler |
US5724946A (en) | 1996-11-22 | 1998-03-10 | Siemens Automotive Corporation | Fuel rail and injector assembly |
DE19725076A1 (de) * | 1997-06-13 | 1998-12-17 | Bosch Gmbh Robert | Brennstoffeinspritzanlage |
DE19758817B4 (de) * | 1997-12-17 | 2010-08-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Halterung für ein Brennstoffeinspritzventil am Zylinderkopf einer Brennkraftmaschine |
JP2000018125A (ja) * | 1998-07-01 | 2000-01-18 | Mitsubishi Electric Corp | 筒内噴射用燃料噴射弁 |
-
1999
- 1999-01-21 DE DE19902186A patent/DE19902186A1/de not_active Withdrawn
- 1999-10-28 JP JP2000595053A patent/JP2002535550A/ja active Pending
- 1999-10-28 WO PCT/DE1999/003450 patent/WO2000043668A1/de not_active Application Discontinuation
- 1999-10-28 US US09/646,747 patent/US6491026B1/en not_active Expired - Fee Related
- 1999-10-28 EP EP99957939A patent/EP1066469B1/de not_active Expired - Lifetime
- 1999-10-28 ES ES99957939T patent/ES2233087T3/es not_active Expired - Lifetime
- 1999-10-28 KR KR1020007010356A patent/KR20010086261A/ko not_active Application Discontinuation
- 1999-10-28 BR BR9908987-4A patent/BR9908987A/pt active Search and Examination
- 1999-10-28 DE DE1999510842 patent/DE59910842D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0043668A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2002535550A (ja) | 2002-10-22 |
KR20010086261A (ko) | 2001-09-10 |
EP1066469B1 (de) | 2004-10-13 |
US6491026B1 (en) | 2002-12-10 |
DE19902186A1 (de) | 2000-07-27 |
BR9908987A (pt) | 2000-12-12 |
DE59910842D1 (de) | 2004-11-18 |
WO2000043668A1 (de) | 2000-07-27 |
ES2233087T3 (es) | 2005-06-01 |
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