EP1544455A2 - Injecteur à combustible - Google Patents

Injecteur à combustible Download PDF

Info

Publication number
EP1544455A2
EP1544455A2 EP04105650A EP04105650A EP1544455A2 EP 1544455 A2 EP1544455 A2 EP 1544455A2 EP 04105650 A EP04105650 A EP 04105650A EP 04105650 A EP04105650 A EP 04105650A EP 1544455 A2 EP1544455 A2 EP 1544455A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
injection system
section
hold
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
Application number
EP04105650A
Other languages
German (de)
English (en)
Other versions
EP1544455B1 (fr
EP1544455A3 (fr
Inventor
Andreas Eckbauer
Bernd Hollerbaum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 EP1544455A2 publication Critical patent/EP1544455A2/fr
Publication of EP1544455A3 publication Critical patent/EP1544455A3/fr
Application granted granted Critical
Publication of EP1544455B1 publication Critical patent/EP1544455B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • 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
    • 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

  • the invention is based on a fuel injection system according to the preamble of the main claim.
  • a Fuel injection system with a fuel distribution line, a tubular intermediate piece with two annular seals, a sleeve-shaped Fastening element and a clamping claw known.
  • the Fuel distribution line opens via the intermediate piece in the fuel injection valve, wherein the intermediate piece axially is displaceable and thereby an axial play is possible.
  • the securing element limits the axial play.
  • the Clamp presses on one at the fuel injector trained flange against the fuel injector a cylinder head.
  • the clamping claw is separate from the Fuel distribution line attached to the cylinder head and relies on this.
  • a disadvantage of the above-mentioned document known fuel injection valve is in particular that the installation effort during assembly of the Fuel injection valve with the Fuel distribution line is unfavorably high. By the high number of for fixing and fuel supply necessary components are also the production costs increased.
  • the fuel injection system according to the invention with the characterizing features of the main claim has In contrast, the advantage that the assembly of Fuel injection system can be done much easier and the necessary components easier and with less manufacturing effort can be made and in their number are reduced.
  • the hold-down section is supported immediately at the allocation section. This allows the bias generated by the holddown portion very much exactly determined by the location of the allocation section become.
  • Another advantage is that the hold-down a Receiving opening, which from a survey empties, wherein the survey is shaped so that the Collection at least partially embracing upper section against rotation with the survey is positively joined.
  • the hold-down portion with respect to a certain angle about the longitudinal axis of the receiving opening can be easily mounted and aligned permanently become.
  • the survey on a nose and / or is oval shaped. This can be a simple way generate rotation-proof geometry of the survey, which also the assembly of the hold-down section with the survey simplified.
  • Fuel injection system has the lower section Spring arms with positioning surfaces on.
  • the Positioning surfaces advantageously engage in one arranged on the fuel injection valve coding section a perfect fit, wherein the coding section together with the Position of the positioning surfaces the angle of rotation or the Installation position of the fuel injection valve with respect to it Orientation around the longitudinal axis determined. This is one very simple and fail-safe angular alignment the fuel injection valve possible.
  • An illustrated in Fig. 1 embodiment of the Fuel injection system according to the invention is used in particular for elastically holding down a Fuel injection valve 3 and for the supply of Fuel to the fuel injection valve 3 and has an allocation section 1 and a hold-down section 2 on.
  • the Fuel injection valve 3 pressurized fuel fed.
  • the hold-down section 2 is the Fuel injection valve 3 against an example on a cylinder head, not shown trained Biased support surface.
  • the force, which by the Hold-down section 2 on the fuel injection valve. 3 For example, it is greater than one in one illustrated combustion chamber on the fuel injection valve. 3 Acting force.
  • the hold-down portion 2 is elastic trained and can thereby the occurring axial Compensate for tolerances. Pressure surges or pressure fluctuations, which, for example, from the combustion chamber, not shown can act on the fuel injection valve 3 axially material-friendly elastically intercepted, wherein For example, an elastic seal, not shown reliably seals the combustion chamber during axial play.
  • the allocation section 1 has a plurality of holes 8 Recording of connecting elements not shown on, wherein the holes 8 partially on at the allocation section. 1 trained flanges 7 are introduced and in Embodiment with their longitudinal axes parallel to Longitudinal axis of a receiving opening 6 extend.
  • the connection section 5 has on its bottom 9 a survey 10, from which the receiving opening 6 for receiving the upstream end of the fuel injection valve 3 opens. The mouth of the receiving opening 6 is through the survey 10 deducted from the surrounding bottom 9 and protrudes from the bottom 9 of the connecting portion. 5 out.
  • the survey 10 is for example by the Forming a nose 15 or by an oval shape in one Direction stretched trained.
  • the hold-down section 2 is permanently elastic, made of spring steel, for example, and U-shaped educated.
  • the clamp-like shape of the Hold-down section 2 has a connection section 5 directed upper section 11 and one the upper Section 11 opposite lower section 12, which is further away from the connection section 5 than the upper section 11.
  • the upper section 11 forks into two mutually parallel upper spring arms 13 and the lower portion 12 bifurcates in two parallel lower spring arms 14.
  • the upper Spring arms 13 are like the lower spring arms 14 respectively slightly elastically movable away from each other.
  • the hold-down portion 2 is already on the Connecting portion 5 mounted, wherein the upper spring arms 13 the survey 10, for example, with a bias embrace.
  • the inner shape of the upper spring arms 13 is the Adapted form of the survey 10. Due to the oval shape or through the nose 15 is the hold-down section 2 to the Longitudinal axis of the receiving opening 6 relative to Connection section 5 defines positively angularly aligned and positively in the radial direction joined with the survey 10.
  • the upper spring arms 13 can advantageously with a bias radially on the Survey 10 act, causing the hold-down section 2 in axial direction and radial direction frictionally with the survey 10 is added.
  • the hold-down section 2 becomes for example, for mounting radially on the survey 10th deferred and withdrawn axially for disassembly.
  • the lower spring arms 14 point to each other directed sides positioning surfaces 16. Form one in the region of the inflow end of the Fuel injection valve 3 lying coding section 19, which engages in the lower spring arms 14 is so formed so that the fuel injection valve 3 with respect a rotation angle or a plurality of rotation angles about the longitudinal axis the fuel injection valve 3 is exactly aligned, or can be installed only aligned. In the further secure the positioning surfaces 16 a rotation of the Fuel injection valve 3 about its longitudinal axis Positive engagement.
  • the middle of the lower spring arms 14 point Advantageously, a dome 17, through which the lower spring arms 14 in the middle of the receiving opening. 6 are bent away.
  • Fig. 2 shows a schematic representation of the Inventive fuel injection system with the Fuel injection valve 3.
  • the lower spring arms 14 the inflow side Area of the fuel injection valve 3.
  • the Coding section 19 is according to the shape of the two Positioning surfaces 16 formed and lies against these ideally fitting. This is the Fuel injection valve 3 against turning around his Secured longitudinal axis.
  • Fuel injection system for example, not at one shown cylinder head, the lower portion 12th biased against the fuel injection valve 3 and presses fixed to one on the fuel injection valve 3 Auflagering 18, wherein the hold-down section 2 at the Allocation section 1 is supported over the upper portion 11.
  • the support ring 18 and the coding section 19 are in embodiment shown in one piece.
  • For example, for vibration damping can between the upper section 11 and the bottom 9 a not be shown permanently elastic intermediate layer arranged.
  • the lower portion 12 becomes slight during assembly moved against the upper portion 11, whereby the lower portion 12 against the fuel injection valve. 3 elastically pretensioned. Through the calotte 17, with the lower portion 12 preferably on the support ring 18th rests, it prevents that thereby radially directed Forces acting on the fuel injection valve 3.
  • Fig. 3 shows a possible embodiment of the Coding section 19 of the fuel injection valve 3.
  • the Coding section 19 has two tangential to the longitudinal axis 21st the fuel injection valve 3 and straight Notches 20, which in the embodiment parallel to each other.
  • the coding section 19 can be made in one piece or separately performed with the fuel injection valve 3 be, for example, as a sleeve, not shown, the for example, pressed or with the Fuel injection valve 3 welded in the desired position becomes.

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)
EP20040105650 2003-12-16 2004-11-10 Injecteur à combustible Expired - Fee Related EP1544455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358912 2003-12-16
DE2003158912 DE10358912A1 (de) 2003-12-16 2003-12-16 Brennstoffeinspritzsystem

Publications (3)

Publication Number Publication Date
EP1544455A2 true EP1544455A2 (fr) 2005-06-22
EP1544455A3 EP1544455A3 (fr) 2006-03-15
EP1544455B1 EP1544455B1 (fr) 2011-02-16

Family

ID=34485406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040105650 Expired - Fee Related EP1544455B1 (fr) 2003-12-16 2004-11-10 Injecteur à combustible

Country Status (2)

Country Link
EP (1) EP1544455B1 (fr)
DE (2) DE10358912A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006037726A2 (fr) * 2004-10-01 2006-04-13 Robert Bosch Gmbh Systeme d'assujettissement pour dispositif d'injection de carburant, et dispositif d'injection de carburant
DE102010017725A1 (de) 2010-07-05 2012-01-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Einspritzanordnung für eine Brennkraftmaschine eines Kraftfahrzeugs
US9212641B2 (en) * 2012-02-27 2015-12-15 Keihin Corporation Fuel injection valve supporting structure
DE102018218711A1 (de) 2018-10-31 2020-04-30 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung
EP3805621A1 (fr) * 2019-10-07 2021-04-14 Ckd Corporation Soupape à solénoïde

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735665A1 (de) 1997-06-25 1999-01-07 Bosch Gmbh Robert Brennstoffeinspritzanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
DE10152421A1 (de) * 2001-10-24 2003-06-18 Bosch Gmbh Robert Befestigungsvorrichtung
DE10163030B4 (de) * 2001-12-20 2014-10-09 Robert Bosch Gmbh Befestigungsvorrichtung
JP3997946B2 (ja) * 2002-07-26 2007-10-24 株式会社デンソー 燃料供給装置
DE10256668A1 (de) * 2002-12-04 2004-07-29 Robert Bosch Gmbh Stützelement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735665A1 (de) 1997-06-25 1999-01-07 Bosch Gmbh Robert Brennstoffeinspritzanlage

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006037726A2 (fr) * 2004-10-01 2006-04-13 Robert Bosch Gmbh Systeme d'assujettissement pour dispositif d'injection de carburant, et dispositif d'injection de carburant
WO2006037726A3 (fr) * 2004-10-01 2006-06-22 Bosch Gmbh Robert Systeme d'assujettissement pour dispositif d'injection de carburant, et dispositif d'injection de carburant
EP1953381A1 (fr) * 2004-10-01 2008-08-06 Robert Bosch Gmbh Système d'assujettissement pour dispositif d'injection de carburant
US7802559B2 (en) 2004-10-01 2010-09-28 Robert Bosch Gmbh Hold-down device for a fuel injection device, and fuel injection device
DE102010017725A1 (de) 2010-07-05 2012-01-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Einspritzanordnung für eine Brennkraftmaschine eines Kraftfahrzeugs
DE102010017725B4 (de) 2010-07-05 2018-05-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Einspritzanordnung für eine Brennkraftmaschine eines Kraftfahrzeugs
US9212641B2 (en) * 2012-02-27 2015-12-15 Keihin Corporation Fuel injection valve supporting structure
DE102018218711A1 (de) 2018-10-31 2020-04-30 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung
EP3805621A1 (fr) * 2019-10-07 2021-04-14 Ckd Corporation Soupape à solénoïde
CN112696523A (zh) * 2019-10-07 2021-04-23 Ckd株式会社 电磁阀
TWI746180B (zh) * 2019-10-07 2021-11-11 日商Ｃｋｄ股份有限公司 電磁閥

Also Published As

Publication number Publication date
EP1544455B1 (fr) 2011-02-16
DE10358912A1 (de) 2005-09-08
DE502004012192D1 (de) 2011-03-31
EP1544455A3 (fr) 2006-03-15

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