WO2019068576A1 - Support de montage pour ensemble d'injection de carburant et ensemble d'injection de carburant - Google Patents

Support de montage pour ensemble d'injection de carburant et ensemble d'injection de carburant Download PDF

Info

Publication number
WO2019068576A1
WO2019068576A1 PCT/EP2018/076429 EP2018076429W WO2019068576A1 WO 2019068576 A1 WO2019068576 A1 WO 2019068576A1 EP 2018076429 W EP2018076429 W EP 2018076429W WO 2019068576 A1 WO2019068576 A1 WO 2019068576A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting bracket
bracket
supply pipe
rear wall
common rail
Prior art date
Application number
PCT/EP2018/076429
Other languages
English (en)
Inventor
Giandomenico Serra
Gisella Di Domizio
Ivo Lorenz
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2019068576A1 publication Critical patent/WO2019068576A1/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
    • 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
    • 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
    • F02M55/025—Common 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
    • 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
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws

Definitions

  • the present disclosure relates to a mounting bracket, spe ⁇ cifically but not exclusively, for a fuel injection assembly for a direct injection internal combustion engine and to a fuel injection assembly.
  • Fuel injection assemblies are widely used for injecting fuel into an internal combustion engine, particularly of the type having an injector for each cylinder of a multi-cylinder engine, in which the fuel is supplied from a reservoir in the form of a common rail to which each of the injectors is connected.
  • the assembly is also suitable for use in a single cylinder engine.
  • the fuel injectors are secured directly to the cylinder head of the engine to project into the combustion chamber and are connected to the common rail hydraulically and mechanically by means of a supply pipe.
  • the common rail is connected to the engine and supported by means of at least one mounting bracket secured to the engine and to the supply pipe. In a typical installation a mounting bracket is provided for each supply pipe in order to locate the common rail securely to the engine.
  • the fuel injection assembly is in particular a fuel injection assembly for a direct injection internal combustion engine.
  • the assembly as a plurality of fuel injectors. For example, it has a fuel injector for each cylinder of the engine. It also has a common rail fuel reservoir. Each fuel injector is hydraulically and mechanically connected to the common rail by an associated supply pipe.
  • the mounting bracket is shaped and arrangeable to secure the common rail and each associated supply pipe to the engine,
  • the mounting bracket comprising a base through which the bracket is securable to the engine by a fixing element, the fixing element being a bolt or a screw, for example.
  • the mounting bracket comprises a rear wall extending generally perpendicular to the base and two spaced side wings extending generally perpendicular to the base.
  • Each side wing has a first portion extending at generally right angles to the rear wall.
  • Each side wing has a second portion extending away from the base on the side of the rear wall facing away from the first portion, the second portions each shaped to comprise a freee end section and a joining section, the joining sections lying close together or contacting one another.
  • the free end sections of the of the second portions of the side wings are shaped and arrangeable to be secured to the supply pipe, the rear wall and the side wings being secured together so that loads applied to the bracket are distributed through the sidewalls and the rear wall.
  • the mounting bracket is formed of a sheet material by a stamping or pressing operation.
  • the mounting bracket is a one-pieced part, i.e. it is formed from a single work piece by stamping or pressing.
  • the joining sections are secured together by brazing or welding.
  • connection sections extend from the first portions to the joining sections. They are shaped to abut the rear wall on the side of the rear wall facing away from the first portions.
  • the connection sections are preferably secured to the rear wall by brazing or welding. They may also be secured together by brazing or welding.
  • This arrangement has the advantages that loads applied to any one part of bracket are distributed through the sidewalls and the rear wall to spread the applied loads, thus increasing the reliability of the bracket during extensive use.
  • the free end sections of the second portions of the side wings are shaped in an arcuate curve to define therebetween a substantially circular opening through which the bracket is securable to the supply pipe.
  • the bracket is securable to the supply pipe by forming a brazed or welded connection between the free end sections and the supply pipe.
  • a mounting bracket for use with an internal combustion engine comprising a shaped body formed from a sheet material by stamping, pressing or deep drawing, in which selected parts of the body are formed to be juxtaposed and to be secured together, preferably by brazing or welding.
  • the juxtaposed parts of the bracket be by spot welding.
  • the bracket is in particular the bracket according to one of the embodiments described above.
  • the disclosure also includes a fuel injection assembly for a direct injection internal combustion engine, the assembly having a fuel injector for each cylinder of the engine and having a common rail fuel reservoir, each fuel injector being hydraulically and mechanically connected to the common rail by an associated supply pipe, the common rail and each associated supply pipe being adapted to be secured to the engine by an associated mounting bracket in accordance with the aforementioned aspects.
  • Figure 1 discloses schematic part of a common rail fuel injection system with a mounting bracket in accordance with the present disclosure
  • Figure 2 discloses a schematic perspective view of the mounting bracket .
  • the common rail 2 comprising a generally tubular elongate body having at one end a hydraulic connection 4 by which the common rail 2 is connected to a source of fuel. Spaced along the common rail 2 there is a fuel outlet 6 to which supply pipe 8 is secured. Only one supply pipe is shown but it will be understood that in a multicylinder internal combustion engine a supply pipe for each cylinder is provided, the pipes being spaced along the common rail with the objective that the pipes are all of the same length and as short as practicable. The pipes also may have different lengths depending on the engine geometry.
  • the supply pipe 8 has a fuel injector connection 10 by which the supply pipe is connected hydraulically and me- chanically to a fuel injector (not shown) secured to the combustion chamber concerned.
  • the common rail 2 is connected to the engine, shown schematically as reference 12, by a mounting bracket 14 which is secured to the engine 12 by means of a bolt as a fixing element 16.
  • the mounting bracket 14 is formed from a single integral piece of material from a sheet metal material and shaped typically by being stamped or pressed or drawn into the appropriate shape.
  • the bracket 14 has a base 18 containing an orifice 20 through which the bolt passes to secure the bracket to the engine 12.
  • first portions 40 of two side wings 22, 24 Extending upwardly substantially perpendicular to the base 18 on opposite sides of the orifice 20 are first portions 40 of two side wings 22, 24.
  • a rear wall 26 extends substantially perpendicularly upwardly from the base generally at right angles to the first portions 40 of the two side wings 22 , 24.
  • Each side wing 22, 24 comprises a second portion 50 on the side of the rear wall 26 facing away from the first portions 40.
  • the second portions 50 each comprise a free end section 28, a joining section 30 and a connection section 34, following one another in this order in direction towards the first portion 40.
  • Each of the side wings 22, 24 is shaped to extend inwardly towards each other in the region of the connection sections 34 so as to abut the rear face of the rear wall 26, and then to extend outwardly juxtaposed and essentially in contact in these joining sections 30.
  • the second portions 50 of the side wings 22, 24 are each shaped to provide an inwardly facing arcuate form to provide a part circular enclosure 32 adapted to engage the supply pipe 8.
  • brazing paste is inserted between the rear wall 26 and the juxtaposed parts - the connection sections 34 - of the side wings 22, 24 and also in the region between the juxtaposed joining sections 30 of the side wings 22, 24. Further brazing paste is inserted in the part circular enclosure 32 to enable the bracket to be secured by brazing to the supply pipe 8.
  • the mounting bracket 14 is much stronger and more durable than a simply pressed bracket because the loads applied to the bracket are distributed through the several parts of bracket which are all reinforced by the other parts of the bracket.
  • the loading on the individual parts of the bracket is distributed throughout the bracket with the subsequent reduction in stress on the individual parts.

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

La présente invention concerne un support de montage (14) destiné à être utilisé avec un moteur à combustion interne. Le support de montage (14) comprend un corps façonné qui est en particulier formé à partir d'un matériau en tôle métallique par estampage, pressage ou emboutissage profond. Des parties sélectionnées du corps sont façonnées de façon à être juxtaposées et à être fixées l'une à l'autre. Le support est spécifiquement destiné à fixer un rail commun (2) d'un ensemble d'injection de carburant à un moteur à combustion interne à injection directe.
PCT/EP2018/076429 2017-10-05 2018-09-28 Support de montage pour ensemble d'injection de carburant et ensemble d'injection de carburant WO2019068576A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17194950.6A EP3467296A1 (fr) 2017-10-05 2017-10-05 Support de montage d'un ensemble d'injection de carburant et ensemble d'injection de carburant
EP17194950.6 2017-10-05

Publications (1)

Publication Number Publication Date
WO2019068576A1 true WO2019068576A1 (fr) 2019-04-11

Family

ID=60021993

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/076429 WO2019068576A1 (fr) 2017-10-05 2018-09-28 Support de montage pour ensemble d'injection de carburant et ensemble d'injection de carburant

Country Status (2)

Country Link
EP (1) EP3467296A1 (fr)
WO (1) WO2019068576A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019123673B3 (de) * 2019-09-04 2020-12-10 Benteler Automobiltechnik Gmbh Kraftstoffverteiler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012054601A2 (fr) * 2010-10-20 2012-04-26 Illinois Tool Works Inc. Ensemble support d'injecteur de carburant
US20150152831A1 (en) * 2013-12-04 2015-06-04 Delphi Technologies, Inc. Fuel rail assembly with bracket and isolator for mounting
WO2016079004A1 (fr) * 2014-11-19 2016-05-26 Continental Automotive Gmbh Ensemble rampe à carburant pour moteur à combustion interne
US20170022951A1 (en) 2015-07-23 2017-01-26 Continental Automotive Gmbh Fuel Rail Assembly For An Internal Combustion Engine
WO2017050850A1 (fr) 2015-09-24 2017-03-30 Continental Automotive Gmbh Ensemble rampe de carburant et procédé de fabrication d'un ensemble rampe de carburant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012054601A2 (fr) * 2010-10-20 2012-04-26 Illinois Tool Works Inc. Ensemble support d'injecteur de carburant
US20150152831A1 (en) * 2013-12-04 2015-06-04 Delphi Technologies, Inc. Fuel rail assembly with bracket and isolator for mounting
WO2016079004A1 (fr) * 2014-11-19 2016-05-26 Continental Automotive Gmbh Ensemble rampe à carburant pour moteur à combustion interne
US20170022951A1 (en) 2015-07-23 2017-01-26 Continental Automotive Gmbh Fuel Rail Assembly For An Internal Combustion Engine
WO2017050850A1 (fr) 2015-09-24 2017-03-30 Continental Automotive Gmbh Ensemble rampe de carburant et procédé de fabrication d'un ensemble rampe de carburant

Also Published As

Publication number Publication date
EP3467296A1 (fr) 2019-04-10

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