WO2002061268A1 - Soupape d'injection avec alimentation en carburant associee - Google Patents

Soupape d'injection avec alimentation en carburant associee Download PDF

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Publication number
WO2002061268A1
WO2002061268A1 PCT/DE2002/000302 DE0200302W WO02061268A1 WO 2002061268 A1 WO2002061268 A1 WO 2002061268A1 DE 0200302 W DE0200302 W DE 0200302W WO 02061268 A1 WO02061268 A1 WO 02061268A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
fuel distributor
injection
injection valve
distributor
Prior art date
Application number
PCT/DE2002/000302
Other languages
German (de)
English (en)
Inventor
Eckhard Bodenhausen
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2002061268A1 publication Critical patent/WO2002061268A1/fr

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
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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

Definitions

  • injectors for supplying the fuel are installed in suction components, whether they be intake manifolds or intake manifold modules.
  • the injection valves are connected to a fuel supply on the one hand and are controlled via electrical contact elements on the other hand.
  • the injection valves are embedded in bores of the suction component sucking the combustion air and project with an end face having an injection opening into the component sucking the combustion air.
  • DE 41 15 039 C2 relates to a fuel distributor. This is used in the slurry injection system of an internal combustion engine to supply at least two fuel injection valves with fuel. A number of stepped valve receiving openings corresponding to the number of fuel injectors is provided through the fuel distributor. The fuel injection valves can be inserted into these, the valve receptacles at least partially surrounding the fuel injection valves and with a fuel supply line which is connected to the valve opening openings.
  • the fuel supply line is divided by a partition into a first channel and a second channel. The main fuel flow supplied flows through the first channel of the fuel distributor, and the second channel forming a fuel reservoir is connected to the first channel through at least one through opening which passes through the partition.
  • DE 41 28 086 AI also relates to a fuel distributor. This is intended to remedy the fact that when the combustion starts hot, vapor bubbles which form in the fuel lead to starting difficulties of the combustion] - ascr-ine.
  • the fuel distributor procured in accordance with DE 41 28 086 AI has a vapor-bubble-free fuel volume lying around the fuel injection valve, which, when the Bre --- n - ⁇ raft machine starts up hot, enables the fuel injector to be sprayed off with vapor-bubble-free fuel and has good ignitability.
  • the fuel distributor disclosed according to this document is particularly suitable for fuel injection systems of mixture-compressing, spark-ignited
  • DE 37 30 571 AI relates to a device for mounting, fuel supply and electrical contacting of electromagnetically actuated fuel injection valves.
  • This device is intended to ensure that all fuel injection valves can be held and electrically contacted at the same time.
  • the fuel injection valves used in the receiving bores of a base body are held together in the bore holes by a contacting power placed on the base body and contacted together by electrically conductive contact elements.
  • This compact assembly of the device can be jointly attached to the internal combustion engine and electrically connected to an electronic control unit for controlling fuel injection valves via a connector.
  • a fuel distributor for fuel injection systems of internal combustion engines has become known from DE 39 07 764 AI.
  • This fuel distributor for fuel injection systems of internal combustion engines with at least one fuel injection valve and with a valve carrier has a receiving bore for the fuel injection valve and a Stixnflansch surrounding the receiving bore.
  • the fuel injection valve is axially supported on this by means of a collar.
  • the end flange of the valve carrier and the collar of the fuel injection valve are designed as mutually corresponding parts of a bayonet lock, independently of a plug hood that is still to be fitted.
  • the connector hood is used as an additional locking means and, for this purpose, engages with locking pins in the recesses in the bayonet lock which serve for locking and unlocking.
  • the invention enables a cost-effective construction of an injection valve with a fuel distributor in a compact design.
  • the injection valve can be fixed in a receiving bore in a wall of an intake component by the subsequent assembly of the fuel rail. This is particularly advantageous if the wall thickness of the intake component is to be kept lower for design reasons and the K-fuel supply line cannot be integrated into the intake air component.
  • injection valves are connected to the fuel distributor supplying all the injection valves of an internal combustion engine by a joining process, for example ultrasound welding, O-rings for sealing the manually operated holding hammer can be omitted during assembly.
  • the assembly can be simplified and automated by executing a material connection between the fuel rail and the injection valve.
  • the hold-down device for the fuel injection valves to be fixed in the intake component can be made of plastic as an injection molding; In addition, the feasibility of the fuel rail as a component made of metallic material is available. If the fuel distributor is designed as a plastic injection molded component, a lower shell of a cable duct for receiving the contacting cables that respectively drive the injection valves can advantageously be injection molded. After the contacting cable has been drawn in, the lower shell is closed by an upper shell, so that the contacting cable is encapsulated to the outside.
  • the cable duct receiving the contacting cable can be fitted via snap locks on the side of the fuel distributor facing away from the injection valves.
  • connector lugs of the control connections of the injection valves can be guided laterally on the fuel distributor up to its top, at which they protrude through openings in the cable duct lower shell into the cavity of the cable duct and there with the respective contacting cables can be electrically connected.
  • the use of an automatable joining process which produces a material connection between the fuel distributor and the individual injection valves provided with a plastic encapsulation produces a seal which prevents fuel from escaping to the outside.
  • the seal between the injection valve and the fuel distributor can be achieved by sealing elements integrated in the bottom of the fuel distributor or by sealing elements provided on the top of the injection valve.
  • FIG. 1 shows a fuel distributor made of plastic and acting as a hold-down device for injection valves with a cable duct for contacting cables,
  • Figure 3 shows a fuel distributor with molded lower shell of a cable duct in a perspective side view.
  • FIG. 1 shows a fuel distributor made of plastic as an injection molded component and functioning as a hold-down device for injection valves, with a cable channel for receiving contacting cables.
  • an outside bore 3 is provided.
  • An injection valve 4 encased in a plastic encapsulation 19 is let into the receiving bore 3 of the wall 2 of the intake component 1.
  • the axial extent of the injection valve 4 be made as well as made of metallic material, for example made of aluminum.
  • Reference numeral 5 denotes the inlet bore for the fuel, which extends coaxially to the axis of symmetry of the injection valve 4 from its end face 9 to its underside, which opens into the suction channel of the intake component 1.
  • the fuel distributor 10 extends perpendicular to the plane of the drawing as shown in FIG. 1 and supplies the individual injection valves provided on a deceleration engine with fuel.
  • the fuel flows through the flow cross-section delimited by the cavity 11 of the fuel distributor 10 and is supplied to the individual injection valves 4 provided in the wall 2 of the intake component 1 via inlet openings 12 provided in the bottom 13 of the power distributor 10.
  • the fuel distributor 10 made of plastic is detachably fastened by means of a fastening flange 16 to a flat surface 18 of the intake component 1 by means of a screw connection 17.
  • a bottom 13 of the fuel distributor 10 made of plastic, as shown in FIG. 1 is connected to the end face 9 of the injection valve 4 surrounded by a plastic encapsulation 19 by means of an integral joining method, for example ultrasonic welding, in an integral and fuel-tight manner.
  • the joints are identified by reference numeral 14 and are located below the inlet opening 12 for the fuel emerging from the cavity 11 of the fuel distributor 10 and entering the inlet bore 5 of the injection valve 4. This provides a permanent seal between the base 13 of the fuel distributor 10 made of plastic and the injection valve 4 fixed by it in the receiving bore 3 of the intake component 1.
  • Contact elements for example in the form of connector lugs 26, project upward through a cavity 25 provided from a plastic fuel distributor 10.
  • a cable duct lower shell 20 of the cable duct can be injection molded onto the side of the fuel distributor 10 opposite the end face 9.
  • the cable duct lower shell can be provided with openings through which the individual contact elements of the injection valve 4, designed as connector lugs 26, are connected at electrical connection points 23 to the respective contacting cables 22 in the interior of the cable duct.
  • the cable duct lower shell 20 can be closed by a cable duct upper shell 24. This can be done either by a snap lock 27;
  • ultrasound to weld the cable channel upper shell 24 to the cable channel lower shell 20 molded onto the top of the fuel distributor 10.
  • FIGS. 2.1 and 2.2 show a fuel distributor made of metallic material with a clipped-on cable duct for guiding and receiving the contacting cable.
  • a fuel distributor 28 made of metallic material is fastened on the flat surface 18 of the intake component 1 by means of a fastening flange 16.
  • the fastening flange 16 is connected to the wall 2 of the intake component 1 for the combustion air by means of a screw connection 17.
  • a box-shaped hollow profile made of metallic material is attached to the fastening flange 16 and forms the fuel distributor 28.
  • the fuel flows in order to supply the individual injection valves in the flow direction 15, either into or out of the plane of the drawing.
  • a cable duct 34 is provided on the top of the rectangularly configured fuel distributor 28, which can be attached with snap locks to the top of the fuel distributor 28 made of metallic material.
  • the individual contacting cables 21 are received in the cavity of the cable duct 34, as are the electrical connection points 23, at which contact elements, preferably configured as plug lugs 26, are connected to the individual contacting cables 21.
  • the contact elements configured as plug lugs 26 extend through a cavity of the fuel distributor 28 and are at the end opposite the cable duct 34
  • the injection valve 4 which is embedded in the receiving bore 3 of the wall 2 of the intake component 1 and is surrounded by a plastic casing 19, and the fuel distributor 28 made of metallic material are in contact by means of a pin connection.
  • a sealing element in the form of an O-ring 31 can be provided, for example, on an indentation 30 which is formed on the fuel distributor 28, so that a fuel-tight seal is formed between the end face 9 of the injection valve 4 and the cavity 11 of the fuel distributor 28 metallic material can be achieved.
  • an annular groove 33 can be embedded in the end face 9 of the injection valve 4 and serves to receive an O-ring 32 which acts as a seal.
  • this cable duct 34 can be provided with a cover which can be swung open and which enables access to the contacting cables 21 provided in the interior of the cable duct 34.
  • the cable duct can also be designed as a closed hollow profile and can be accommodated by means of the snap closures 27 on the upper side of the fuel distributor 28 made of metallic material.
  • FIG. 3 shows a fuel distributor which has a molded-on cable duct lower shell of a cable duct, FIG. 3 showing a side view held in perspective.
  • the fuel distributor 10 shown in the illustration in FIG. 3 and manufactured as a plastic injection molded component is essentially rectangular and has a flow cross section 39 in which the fuel for the individual injection valves 4 is transported in the direction of flow 15.
  • Position 35 denotes the individual injection valves 4, which are not shown in detail here, and which are on the underside
  • One of the injection valves 4, which is integrally connected to the bottom 13 of the fuel distributor 10, is shown in FIG. 3.
  • This injection valve 4 comprises a taper 8, which is formed on the injection valve body in order to secure it in the AuJ receiving bore 3 in the axial direction.
  • the individual injection valves 4 can be held down in the receiving bores 3 in the intake component 1 and are also connected by the integral connection between the base 13 of the fuel distributor 10 the end face 9, which seals the inlet opening 16, is effectively protected against fuel leakage to the outside.
  • the cable duct lower shell 20 of a multi-part cable duct for receiving contacting cables 21 is injection molded onto the top of the fuel distributor 10 as shown in FIG. 3.
  • the bottom of the cable duct lower shell 20 is provided with individual openings 36, through which the plug lugs 26 (not shown here) (see illustration in FIG. 1) penetrate the fuel distributor 10 and 39 from the front side 9 of the individual injection valves 4 in the vertical direction , open into the interior of the multi-part cable duct 20 or 24.
  • individual openings 38 are provided, into which flexible projections 37 designed as snap locks 37 snap, which in turn are formed on the cable duct upper shell 24.
  • the individual plug lugs 26 of the injection valves 4 which protrude through the openings 36 in the cable duct lower shell 20, can be connected to the respective contacting cables 21 at electrical connection points 23.
  • the cable channel lower shell 20 is closed by the cable channel upper shell 24, which can be latched to the snap closures 37 and 38, so that the entry of water and dirt is effectively prevented.
  • Wall 37 snap closure upper shell

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un dispositif d'injection de carburant pour systèmes d'injection de carburant dans des moteurs à combustion interne. Des soupapes d'injection (4) sont logées dans des orifices de réception (3) ménagés dans un composant d'admission (1). Les soupapes d'injection (4) sont alimentées en carburant via une rampe distributrice de carburant (10, 28), ledit carburant étant injecté, par un alésage d'admission (5), dans l'air aspiré à travers le composant d'admission (1). Les soupapes d'injection (4) sont connectées, au niveau d'une surface avant (9), de manière étanche au carburant, avec ladite rampe distributrice de carburant (10, 28).
PCT/DE2002/000302 2001-01-29 2002-01-29 Soupape d'injection avec alimentation en carburant associee WO2002061268A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001103825 DE10103825A1 (de) 2001-01-29 2001-01-29 Einspritzventil mit aufgesetzter Kraftstoffversorgung
DE10103825.9 2001-01-29

Publications (1)

Publication Number Publication Date
WO2002061268A1 true WO2002061268A1 (fr) 2002-08-08

Family

ID=7672028

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/000302 WO2002061268A1 (fr) 2001-01-29 2002-01-29 Soupape d'injection avec alimentation en carburant associee

Country Status (2)

Country Link
DE (1) DE10103825A1 (fr)
WO (1) WO2002061268A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217538A1 (de) 2013-09-03 2015-03-05 Robert Bosch Gmbh Haltevorrichtung zur Befestigung eines Brennstoffverteilers an einer Brennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014050A1 (fr) * 1991-02-11 1992-08-20 Siemens Aktiengesellschaft Ensemble rampe d'amenee du carburant a electronique autonome
WO1992016736A1 (fr) * 1991-03-23 1992-10-01 Robert Bosch Gmbh Reglette pour la mise en contact electrique commune de plusieurs injecteurs de carburant a commande electrique
DE4131537A1 (de) * 1991-09-21 1993-04-01 Bosch Gmbh Robert Brennstoffverteiler
DE19757347A1 (de) * 1996-12-24 1998-06-25 Toyota Motor Co Ltd Kraftstoffeinspritzvorrichtung
JP2000249030A (ja) * 1999-02-26 2000-09-12 Keihin Corp 電磁式燃料噴射弁におけるシール部材の取付け構造

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX169738B (es) * 1987-04-03 1993-07-22 Orbital Eng Pty Sistema de inyeccion de combustible para un motor de combustion interna de cilindros multiples
CA2050452A1 (fr) * 1990-11-19 1992-05-20 John C. Hickey Ensemble injecteur de carburant moule par injection
DE19725076A1 (de) * 1997-06-13 1998-12-17 Bosch Gmbh Robert Brennstoffeinspritzanlage
JP3875417B2 (ja) * 1998-11-25 2007-01-31 本田技研工業株式会社 車両用エンジンにおける燃料噴射装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014050A1 (fr) * 1991-02-11 1992-08-20 Siemens Aktiengesellschaft Ensemble rampe d'amenee du carburant a electronique autonome
WO1992016736A1 (fr) * 1991-03-23 1992-10-01 Robert Bosch Gmbh Reglette pour la mise en contact electrique commune de plusieurs injecteurs de carburant a commande electrique
DE4131537A1 (de) * 1991-09-21 1993-04-01 Bosch Gmbh Robert Brennstoffverteiler
DE19757347A1 (de) * 1996-12-24 1998-06-25 Toyota Motor Co Ltd Kraftstoffeinspritzvorrichtung
JP2000249030A (ja) * 1999-02-26 2000-09-12 Keihin Corp 電磁式燃料噴射弁におけるシール部材の取付け構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12 3 January 2001 (2001-01-03) *

Also Published As

Publication number Publication date
DE10103825A1 (de) 2002-08-08

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