EP0485545A1 - Fuel injection device for internal-combustion engines. - Google Patents
Fuel injection device for internal-combustion engines.Info
- Publication number
- EP0485545A1 EP0485545A1 EP91908413A EP91908413A EP0485545A1 EP 0485545 A1 EP0485545 A1 EP 0485545A1 EP 91908413 A EP91908413 A EP 91908413A EP 91908413 A EP91908413 A EP 91908413A EP 0485545 A1 EP0485545 A1 EP 0485545A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- connecting piece
- spring
- locking elements
- valve housing
- 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 55
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
- F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
Definitions
- the invention is based on a fuel injection device for internal combustion engines of the type defined in the preamble of claim 1.
- the connecting member is designed as a U-shaped spring clip, the web of which extends transversely to the longitudinal extent of the fuel injection valve and the legs of which, on the one hand, are flanged in a circumferential groove on the edge with radially inwardly bent tabs Engage the valve housing of the fuel injector and, on the other hand, have openings in which a locking collar running around the connecting piece can be snapped into place.
- the tabs For the radial fixation of the spring clip in the circumferential groove of the valve housing, the tabs have sections in the shape of a circular arc and concave, the radius of which corresponds to that of the circumferential groove.
- the spring clip is first pushed onto the fuel injector, the legs engaging with their tabs in the circumferential groove. Then the fuel injector provided with the spring clip is inserted axially into the connecting piece. So that the legs can slide over the locking collar, they are in the direction of insertion angled outside and are spread out by the locking collar when inserted. As soon as the locking collar has engaged in the openings, the legs spring back into their starting position.
- the fuel injection device according to the invention with the characterizing features of claim 1 has the advantage that
- the fuel injection valves inserted into the connecting pieces and held by means of the connecting members are circumferentially precise and functionally reliable and inexpensive and are twisted by a simple external force, e.g. B. by plugging or unplugging the connecting cable is no longer possible.
- the connecting links are easy to manufacture and enable easy and automatic assembly.
- the molded elements on the fuel injection valves can already be taken into account in the molding tool and do not lead to significant additional costs in production.
- the correct positioning of the fuel injection valves with respect to the intake geometry of the internal combustion engine can be reproduced with high precision even after disassembly for service purposes and is reliably maintained even under rough operating conditions.
- FIG. 1 shows a partial side view of a fuel injection device, partially in section
- FIG. 2 shows a view of the fuel injection device in the direction of arrow II in FIG. 1
- FIG. 3 shows a bottom view of the fuel injection device in FIG. 1 with the fuel injection valve removed
- FIG. 4 shows a front view of a connecting element in FIG 1 to 3
- FIG. 5 shows a side view of the connecting member in FIG. 4
- FIG. 6 shows a top view of the connecting member in FIG. 4.
- the fuel injection device for internal combustion engines shown in FIGS. 1 and 2 in two different side views, partly in section and in sections, has a fuel distributor 10 made of plastic or e.g. B. aluminum, which carries a plurality of connecting pieces 11 and an equal number of fuel injectors 12 with an existing at one end connection opening for fuel supply.
- Such fuel injection valves 12 are generally called top-feed valves.
- the number of connecting pieces 11 on the fuel distributor 10 and the number of fuel injection valves 12 may correspond to or be less than the number of cylinders to be supplied to the internal combustion engine. In a four-cylinder internal combustion engine, four fuel injection valves 12 are thus to be provided, which are each inserted in a liquid-tight manner in one of four connecting pieces 11 on the fuel distributor 10.
- each connecting piece 11 is provided at the free end with two radially projecting locking elements 13, 30 and each fuel injection valve 12 with a circumferential groove 14 in its valve housing 15, and a connecting member 16 is provided for each fuel injection valve 12. which engages in the circumferential groove 14 on the one hand and on the other hand engages over the locking elements 13, 30.
- FIGS. 4 to 6 An embodiment of such a connecting member 16 is shown in Figures 4 to 6. It is formed by an approximately U-shaped spring clip 17, which is made from a stamped sheet metal part or is designed as a plastic injection-molded part.
- the spring clip 17 has two spring legs 18, 19 and a spring web 20 connecting them.
- Spring legs 18, 19 and spring bar 20 each extend approximately parallel to in the functional position of the spring clip 17 Center line 41 of connecting piece 11 and fuel injection valve 12.
- an inwardly directed tab 21 or 22 projects approximately at right angles, which has a contour 23 or 24 adapted to the circumferential groove 14 in the valve housing 15 se intervenes.
- the spring legs 18, 19 each have a longitudinally extending rectangular opening 25 or 26, the width of which is dimensioned in the direction of the center line 41 such that each locking element 13, 30 on the connecting piece 11 is able to pass through the openings 25, 26 and is thus overlapped on both sides by the spring legs 18, 19.
- the spring legs 18, 19 are angled obliquely outwards in their longitudinal edge region 43, 44 facing the connecting piece 11, so that they can be pushed onto the connecting piece easily, preferably mechanically.
- Two sheet metal segments 27, 28 extend approximately parallel to the center line 41 from the spring bar 20.
- the sheet metal segments 27, 28 form a fixing element in the form of a central longitudinal slot 29, which is open towards the free end of the sheet metal segments 27, 28 facing away from the spring bar 20 is.
- the rectangular sheet metal segments 27, 28 directed towards the fuel injection valve 12 are bent inward in the end region facing away from the spring web 20.
- a molded element in the form of a radially projecting cam, web or rib 32 is arranged on the outside of the valve housing 15 of each fuel injection valve 12.
- the spring clip 17 thus locks the fuel injection valve 12 on the connecting piece 11 both in the axial direction and in the circumferential direction, so that it is neither pulled off in the axial direction nor exerted in the circumferential direction without external force. can be rotated.
- the cams 32 are attached at a defined position, so that the fuel injection valve 12, which is designed as a multi-jet valve, is positioned exactly in relation to the suction geometry in the internal combustion engine with respect to its jet planes after being locked on the connecting piece 11.
- the two locking elements 13, 30 extend at a distance from one another on the circumference of the connecting piece 11 and extend only over a part of this primary area.
- the locking elements 13, 30 are mirror images and are arranged essentially symmetrically to a plane of symmetry 47 which runs through the center line 41 and perpendicular to a longitudinal axis 48 of the fuel distributor 10.
- Each locking element 13, 30 has a rectangular cross-section with longitudinal sides 50 running in the circumferential direction of the connecting piece 11 and narrow sides 51 running perpendicularly to it.
- at least one narrow side 51 of each locking element 13, 30 is formed so that it faces away from the connecting piece 11 and protrudes sharp-edged from the respective rectangular opening 25, 26 of the spring clip 17.
- the narrow sides 51 of the locking elements 13, 30 protruding from the respective opening 25, 26 lie symmetrically to the plane of symmetry 47, that is to say on the same side of the longitudinal axis 48.
- Each locking element 13, 30 has an end face 52 which, starting from the Breakthrough 25, 26 protruding narrow side 51 initially runs parallel and then inclined to the plane of symmetry 47 to the other narrow side 51. As a result, the spring clip 17 is not widened too much during assembly.
- Each opening 25, 26 completely encloses one of the locking elements 13, 30.
- Each of the locking elements 13, 30 can of course also have a suitable other cross-section, such as. B. oval, diamond-shaped, triangular or the like, in which case the openings 25, 26 of the spring clip 17 are adapted in a corresponding manner.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Un dispositif d'injection de carburant pour moteurs à combustion interne présente un distributeur de carburant (10) comportant une pluralité d'ajutages (11) munis d'éléments de verrouillage (13, 30) en saillie radialement, et une pluralité de soupapes d'injection de carburant (12) réalisées sous la forme de soupapes dites "top-feed" ou d'alimentation de tête qui sont insérées hermétiquement dans les ajutages (11). Pour la fixation des soupapes d'injection (12) en direction axiale et pour empêcher toute rotation de celles-ci dans le sens périphérique, il est prévu pour chacune d'elles un élément de raccordement (16) venant se loger dans une rainure périphérique (14) de la cage (15) de la soupape et recouvrant les éléments de verrouillage (13, 30). De plus, l'élément de raccordement (16) présente un élément de fixation (29) venant en prise, tout en assurant une liaison solidarisée, au moins en direction périphérique, avec un élément profilé (32) disposé en un emplacement déterminé sur la cage (15) de la soupape.A fuel injection device for internal combustion engines has a fuel distributor (10) comprising a plurality of nozzles (11) provided with locking elements (13, 30) projecting radially, and a plurality of valves d fuel injection (12) made in the form of so-called "top-feed" valves or head supply which are hermetically inserted in the nozzles (11). For fixing the injection valves (12) in the axial direction and to prevent any rotation thereof in the peripheral direction, there is provided for each of them a connecting element (16) which is received in a peripheral groove (14) of the cage (15) of the valve and covering the locking elements (13, 30). In addition, the connecting element (16) has a fastening element (29) engaging, while ensuring an integral connection, at least in peripheral direction, with a profiled element (32) disposed at a determined location on the valve cage (15).
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4017875A DE4017875C2 (en) | 1990-06-02 | 1990-06-02 | Fuel injection device for internal combustion engines |
DE4017875 | 1990-06-02 | ||
PCT/DE1991/000343 WO1991019091A1 (en) | 1990-06-02 | 1991-04-25 | Fuel injection device for internal-combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0485545A1 true EP0485545A1 (en) | 1992-05-20 |
EP0485545B1 EP0485545B1 (en) | 1995-07-12 |
Family
ID=6407747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91908413A Expired - Lifetime EP0485545B1 (en) | 1990-06-02 | 1991-04-25 | Fuel injection device for internal-combustion engines |
Country Status (10)
Country | Link |
---|---|
US (1) | US5167213A (en) |
EP (1) | EP0485545B1 (en) |
JP (1) | JP3251284B2 (en) |
KR (1) | KR0185733B1 (en) |
AU (1) | AU629478B2 (en) |
BR (1) | BR9105777A (en) |
DE (2) | DE4017875C2 (en) |
ES (1) | ES2075446T3 (en) |
RU (1) | RU2066393C1 (en) |
WO (1) | WO1991019091A1 (en) |
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US5501195A (en) * | 1994-09-16 | 1996-03-26 | Siemens Automotive Corporation | Retainer arrangement for a bottom feed fuel injector |
US5724946A (en) * | 1996-11-22 | 1998-03-10 | Siemens Automotive Corporation | Fuel rail and injector assembly |
US5803052A (en) * | 1997-06-27 | 1998-09-08 | Siemens Automotive Corporation | Spring clip for retaining a fuel injector in a fuel rail cup |
US5901688A (en) * | 1997-09-12 | 1999-05-11 | Siemens Canada Limited | Automotive emission control valve mounting |
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US6047907A (en) | 1997-12-23 | 2000-04-11 | Siemens Automotive Corporation | Ball valve fuel injector |
US6053149A (en) * | 1998-05-28 | 2000-04-25 | Siemens Automotive Corporation | Fuel injector clip retention arrangement |
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US6325049B1 (en) | 1999-06-23 | 2001-12-04 | Siemens Automotive Corporation | Fuel injector with orientation feature for orienting injector with respect to the manifold or head |
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US6533188B1 (en) | 2000-12-29 | 2003-03-18 | Siemens Automotive Corporation | Modular fuel injector having a snap-on orifice disk retainer and having an integral filter and dynamic adjustment assembly |
US6568609B2 (en) | 2000-12-29 | 2003-05-27 | Siemens Automotive Corporation | Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and o-ring retainer assembly |
US6698664B2 (en) | 2000-12-29 | 2004-03-02 | Siemens Automotive Corporation | Modular fuel injector having an integral or interchangeable inlet tube and having an integral filter and dynamic adjustment assembly |
US6520421B2 (en) | 2000-12-29 | 2003-02-18 | Siemens Automotive Corporation | Modular fuel injector having an integral filter and o-ring retainer |
US6708906B2 (en) * | 2000-12-29 | 2004-03-23 | Siemens Automotive Corporation | Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and dynamic adjustment assembly |
US6499668B2 (en) | 2000-12-29 | 2002-12-31 | Siemens Automotive Corporation | Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal |
US6655609B2 (en) | 2000-12-29 | 2003-12-02 | Siemens Automotive Corporation | Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having an integral filter and o-ring retainer assembly |
US6523760B2 (en) | 2000-12-29 | 2003-02-25 | Siemens Automotive Corporation | Modular fuel injector having interchangeable armature assemblies and having a terminal connector interconnecting an electromagnetic actuator with an electrical terminal |
US6523756B2 (en) | 2000-12-29 | 2003-02-25 | Siemens Automotive Corporation | Modular fuel injector having a low mass, high efficiency electromagnetic actuator and having a lift set sleeve |
US6523761B2 (en) | 2000-12-29 | 2003-02-25 | Siemens Automotive Corporation | Modular fuel injector having an integral or interchangeable inlet tube and having a lift set sleeve |
US6607143B2 (en) | 2000-12-29 | 2003-08-19 | Siemens Automotive Corporation | Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having a lift set sleeve |
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US6695232B2 (en) | 2000-12-29 | 2004-02-24 | Siemens Automotive Corporation | Modular fuel injector having interchangeable armature assemblies and having a lift set sleeve |
US6550690B2 (en) | 2000-12-29 | 2003-04-22 | Siemens Automotive Corporation | Modular fuel injector having interchangeable armature assemblies and having an integral filter and dynamic adjustment assembly |
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US6536681B2 (en) | 2000-12-29 | 2003-03-25 | Siemens Automotive Corporation | Modular fuel injector having a surface treatment on an impact surface of an electromagnetic actuator and having an integral filter and O-ring retainer assembly |
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US4984548A (en) * | 1989-11-20 | 1991-01-15 | Sharon Manufacturing Company | Fuel injector retainer clip |
GB8926363D0 (en) * | 1989-11-22 | 1990-01-10 | Lucas Ind Plc | Fuel injection system |
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 |
US5074269A (en) * | 1991-04-29 | 1991-12-24 | Chrysler Corporation | Anti-rotation fuel injector clip |
-
1990
- 1990-06-02 DE DE4017875A patent/DE4017875C2/en not_active Expired - Lifetime
-
1991
- 1991-04-25 WO PCT/DE1991/000343 patent/WO1991019091A1/en active IP Right Grant
- 1991-04-25 EP EP91908413A patent/EP0485545B1/en not_active Expired - Lifetime
- 1991-04-25 KR KR1019920700217A patent/KR0185733B1/en not_active IP Right Cessation
- 1991-04-25 ES ES91908413T patent/ES2075446T3/en not_active Expired - Lifetime
- 1991-04-25 US US07/828,896 patent/US5167213A/en not_active Expired - Lifetime
- 1991-04-25 RU SU915011133A patent/RU2066393C1/en not_active IP Right Cessation
- 1991-04-25 JP JP50791591A patent/JP3251284B2/en not_active Expired - Lifetime
- 1991-04-25 DE DE59105977T patent/DE59105977D1/en not_active Expired - Lifetime
- 1991-04-25 AU AU77461/91A patent/AU629478B2/en not_active Ceased
- 1991-04-25 BR BR919105777A patent/BR9105777A/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9119091A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP3251284B2 (en) | 2002-01-28 |
US5167213A (en) | 1992-12-01 |
JPH05500258A (en) | 1993-01-21 |
AU7746191A (en) | 1991-12-31 |
EP0485545B1 (en) | 1995-07-12 |
DE59105977D1 (en) | 1995-08-17 |
DE4017875A1 (en) | 1991-12-05 |
ES2075446T3 (en) | 1995-10-01 |
KR927002465A (en) | 1992-09-04 |
BR9105777A (en) | 1992-06-02 |
DE4017875C2 (en) | 1999-02-04 |
KR0185733B1 (en) | 1999-03-20 |
RU2066393C1 (en) | 1996-09-10 |
WO1991019091A1 (en) | 1991-12-12 |
AU629478B2 (en) | 1992-10-01 |
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