EP2748456A1 - Soupape de distribution d'un milieu en écoulement - Google Patents

Soupape de distribution d'un milieu en écoulement

Info

Publication number
EP2748456A1
EP2748456A1 EP12733714.5A EP12733714A EP2748456A1 EP 2748456 A1 EP2748456 A1 EP 2748456A1 EP 12733714 A EP12733714 A EP 12733714A EP 2748456 A1 EP2748456 A1 EP 2748456A1
Authority
EP
European Patent Office
Prior art keywords
plastic
valve
electrical
actuator
conductor
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
EP12733714.5A
Other languages
German (de)
English (en)
Other versions
EP2748456B1 (fr
Inventor
Dietmar Schmieder
Thomas Sebastian
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 EP2748456A1 publication Critical patent/EP2748456A1/fr
Application granted granted Critical
Publication of EP2748456B1 publication Critical patent/EP2748456B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow

Definitions

  • the invention is based on a valve for metering a flowing, e.g. gaseous or liquid medium, in particular fuel injection valve for internal combustion engines, according to the preamble of claim 1.
  • a known fuel or fuel injection valve for direct injection of fuel or fuel into the combustion chamber of an internal combustion engine (DE 103 17 148 A1) has a valve housing, a recorded in the valve housing piezoelectric, electrostrictive or magnetostrictive gimbaled actuator, which is in operative connection with a valve needle , an electrical connector and an electrical connection from the connector to the actuator producing supply line.
  • the supply line has two supply lines. Each supply line is composed of an electrical conductor fixed on the housing side, a contact pin protruding from the actuator, which is arranged in the valve housing diametrically to the conductor, and a flexible strand section connecting the conductor to the contact pin.
  • the electrical conductor is a sheathed round wire, which is passed through a valve housing final, an inlet for the fuel end cap, and the bare contact pin is frontally from the actuator.
  • the flexible strand section is in the form of a spring blade which extends transversely to the axis of the valve housing.
  • the spring leaf is soldered or welded with angled blade ends on the one hand to the bare end of the sheathed round wire and on the other hand with the bare contact pin.
  • the valve according to the invention with the features of claim 1 has the advantage of a significantly simplified assembly, since the complete wiring of the actuator producing, holistic supply module can be much simpler between connector and actuator can be added and welded only at its conductor ends with connector and actuator , Compared to the electrical supply line in the known valve described above accounts for a total of four welds, which are additionally required there in the two supply lines in the connection of each spring leaf with round wire and pin.
  • the supply module can be easily and inexpensively produced in the plastic injection process with only two inserted and preformed in the middle line section, electrical conductors.
  • the desired axial length compensation in the supply lines to compensate for the axial actuator movements via the axially offset curvatures of the middle conductor sections, which represent the elastic and flexible strand sections of the supply strands with their so-called. Wave geometry.
  • the torsionally rigid supply module provides a reliable rotation for the actuator and makes additional measures for producing a rotation unnecessary.
  • each central conductor section has a plurality of axially displaced, meandering curves or waves, wherein axially successive curves (36) point in inverse directions which extend perpendicular to a plane in which the front and rear conductor sections (341 , 351, 342, 352). Due to the multiple axially offset, meander-shaped curvatures, a small axial spring Stiffness of the supply module achieved, so that occur at an axial temperature stroke of the actuator only very small lifting voltages in the middle conductor sections.
  • the plastic bridge member has the middle conductor sections to the elongated front conductor sections towards limiting plastic ring, which is integrally formed on the plastic sheathing of the front conductor sections, and one to the elongated rear conductor sections towards limiting plastic disc segment with a central passage opening.
  • the plastic disk segment is integrally formed on the plastic casing of the rear conductor sections and from both middle conductor sections in each case a curvature branch nearest the plastic disk segment of the meandering curvature adjacent to the plastic disk segment is embedded in the plastic disk segment.
  • Plastic bridge member can be realized on the available space in the valve housing space optimally adapted supply module with the greatest possible torsional stiffness, which does not conflict with the pursuit of compactness of the valve.
  • the plastic disk segment has a disk surface defined by a circular arc and a chord, and is oriented so that the chord of the circle extends parallel to the plane in which the front and rear conductor sections extend.
  • Width of the plastic casing increases the torsional rigidity of the plastic bridge member.
  • the electrical see ladder from a round wire for example, with a diameter of 0.5 mm, o- from an embossed sheet metal part.
  • a material is a non-ferrous metal material, eg Copper or tin, used.
  • plastic for the plastic sheaths and for the plastic bridge member is preferably a glass fiber reinforced polyamide, eg PA 66 used.
  • the two electrical conductors are connected to one another in the region of the middle conductor sections by a high-resistance resistor. Such resistance prevents electrical damage to the actuator during valve assembly.
  • FIG. 1 and 2 show a longitudinal section of a valve for metering a liquid or gaseous medium
  • FIG. 2 shows a perspective illustration of a connection plug in the valve according to FIG. 1,
  • FIG. 3 is a perspective view of a supply module in the valve according to FIG. 1,
  • FIG. 4 shows a side view of the supply module in FIG. 3,
  • FIG. 5 shows a side view of an electrical conductor in the supply line module according to FIG. 4,
  • FIG. 6 shows a top view of the supply module in FIG. 3,
  • FIG. 7 shows a plan view of an electrical conductor in the supply module according to FIG. 6.
  • the valve shown in longitudinal section in FIG. 1 for metering a flowing medium is preferably used as an injection valve for injecting fuel into the combustion cylinder or air intake tract of an internal combustion engine used, but can also be used as a metering valve for injecting an aqueous solution, such as a urea-water solution in the exhaust system of an internal combustion engine.
  • the valve has a hollow-cylindrical valve housing 11, an actuator 12 accommodated in the valve housing H, which acts on a valve member 13, a connection plug 14 accessible externally on the valve housing 11, which is shown in perspective in FIG. 2, and an electrical connection from Connector 14 to the actuator 12 producing supply line, which has two supply lines 15, 16, each with a flexible strand section.
  • the hollow cylindrical valve housing 11 is closed off at one end by a valve body 18 having an orifice 17 and at the other end by a connecting piece 20 having an inlet 19 for the medium to which the connector 14 is also fastened. Coaxially to the inlet 19 is still a connection piece 21 is arranged, which is designed for sliding a supply hose.
  • the orifice 17 is controlled by a closing head of the outwardly opening valve member 13, that is closed or released.
  • the actuator 12 acting on the valve member 13 for its actuation is designed here as a piezoelectric actuator and has an electrically controllable piezostack 22 composed of piezoceramic disks, which is connected between a closure plate 24 and a connection body 25 by means of a hollow body 23 designed as a spring is clamped.
  • the actuator 12 is supported via a gimbal bearing 26, which is formed on the closure plate 24 fixed to the hollow body 23, at the end close to the closing head of the valve member 13.
  • the end body 25 of the actuator 12 is formed diameter-graded and has a larger diameter body portion 251, to which the hollow body 23 of the actuator 12 is fixed, and a smaller-diameter body portion 252, which communicates with an arranged between the actuator 12 and connector 20 hydraulic coupler 27 in connection , Structure and mode of operation of a hydraulic coupler are known and described for example in DE 10 2004 021 921 A1 or 10 2004 002 134 A1.
  • the hydraulic coupler are known and described for example in DE 10 2004 021 921 A1 or 10 2004 002 134 A1.
  • Coupler 27 has in a known manner a piston 28 and a coupler housing 29 with a cylindrical piston guide, as well as a filled with liquid, preferably oil, coupler gap.
  • the coupler housing 29 is gimballed in a formed in the connector 20 recess 30 and the piston 28 fixed to the smaller diameter
  • Body portion 252 of the end body 25 of the actuator 12 is connected.
  • the coupler housing 29 may also be fastened in the recess 30 and a cardanic bearing may be provided between the smaller diameter body portion 252 of the end body 25 and the piston 28 of the hydraulic coupler 27.
  • Each feed line 15 or 16 consists of a provided with a plastic sheath 32 and 33 electrical conductors 34 and 35.
  • Each electrical conductor 34, 35 of which the uncoated electrical conductor 34 in side view in Figure 5 and in plan view in Figure 7 consists of an elongated front conductor section 341 or 351, which faces the connector 14, and an elongated rear conductor section 342 or 352, which faces the actuator 12, and from an intermediate central conductor section 343 or 353.
  • the middle line section 343 or 353 at least one meandering curve 36 or shaft.
  • each central conductor section 343 and 353, respectively has a plurality of axially offset meandering curves 36 with axially consecutive curves 36 in inverse directions that extend perpendicular to a plane in which the front and rear conductor sections 341 , 351, 342,
  • the plastic bridge member 37 has a middle line sections 343, 353 to the elongated front conductor sections 341, 351 out towards limiting plastic ring 38 and a middle line sections 343,
  • the plastic ring 38 is integrally formed on the plastic sheaths 32, 33 of the front conductor sections 341, 351.
  • the plastic disk segment 39 is integrally formed on the plastic sheaths 32, 33 of the rear conductor sections 342, 352 and um- from the adjacent, meandering curvatures 36 of both middle conductor sections 343, 353 in each case in the strand course, in each case the closer curvature branch 361.
  • the plastic disk segment 39 has a disk surface delimited by a circular arc 391 and a circle chord 392 and is provided with a passage opening 40 provided for the smaller diameter body portion 352 of the end body 25 of the actuator 12.
  • the plastic disk segment 39 is aligned within the feeder module 31 so that the chordal line extends parallel to the plane in which the front and rear conductor sections 341, 351, 342, 352 extend.
  • the Kunststoffummantelun- gene 32, 33 have in the region of the front conductor sections 341, 351 and in the region of the rear conductor sections 342, 352 each have a circular cross-section, however, in the region of the middle conductor sections 343, 353, ie between the plastic ring 38 on the one hand and the Plastic disk segment 39 on the other hand, each having a rectangular cross section with a parallel to the chord 392 of the plastic disk segment 39 extending largest
  • the electrical conductors 34, 35 are preferably produced from a round wire made of non-ferrous metal material or an embossed sheet made of non-ferrous metal material. As a non-ferrous metal material such as copper or tin is used. The round wire, for example, have a diameter of 0.5mm.
  • a glass fiber reinforced polyamide eg PA 66, is used for the plastic sheaths 32, 33 of the electrical conductors 34, 35 and for the plastic bridge member 37.
  • the two electrical conductors 34, 35 in the region of the middle conductor sections 343, 353 are connected to one another by a high-resistance resistor 41.
  • the connection is made by welding, soldering or clamping.
  • the elongated front conductor sections 341, 351 in the connection plug 14 carrying connector 20 and the elongated rear conductor sections 342, 352 in the larger diameter body portion 251 of the end body 25 of the actuator 12 are each form-fitting manner while the plastic bridge member 37 incorporating the middle conductor sections 343, 353 defines the smaller diameter body section 252 of the end body 25 of the actuator 12 surrounds.
  • connection plug 14 has two electrical plug-in contacts 141 which can be accessed externally on the valve housing 11 and from the plug contacts 141 to the one
  • Valve housing 1 1 final connector 20 guided contact lugs 142 on.
  • the bare ends of the elongated front conductor sections 341, 351 of the electrical conductors 34, 35 are each connected to one of the contact lugs 142, e.g. by welding.
  • the bare ends of the elongated rear conductor sections 342, 352 of the electrical conductors 34, 35 directly contact the piezoelectric stack 22 of the actuator 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

L'invention concerne une soupape de distribution d'un milieu, par exemple liquide ou gazeux, en écoulement, en particulier une soupape d'injection de carburant pour moteurs à combustion interne, qui présente un carter de soupape, un actionneur logé dans le carter de soupape et agissant sur un élément de soupape, un connecteur électrique accessible à l'extérieur sur le carter de soupape et une ligne électrique établissant une alimentation électrique du connecteur à l'actionneur et comprenant deux branches d'alimentation qui comportent respectivement une partie de branche flexible. Pour optimiser l'alimentation électrique dans le but de réduire les coûts de production, de simplifier le montage de la soupape et de fournir une sécurité anti-rotation pour l'actionneur, chaque branche conductrice (15, 16) est constituée d'un conducteur électrique (34, 35) qui est pourvu d'une enveloppe en matière plastique (32, 33) et présente une partie de conducteur avant et arrière, allongée (341, 351 ou encore 342, 352) ainsi qu'une partie de conducteur centrale (343, 353) qui est située entre les parties avant et arrière et qui présente pour la réalisation de la partie de branche flexible au moins une courbure sinueuse (36), et un élément de pont en matière plastique (37) d'un seul tenant dans la région des parties centrales (343, 353) des deux conducteurs électriques (34, 35) pourvus des enveloppes en matière plastique (32, 33) relie les deux branches d'alimentation (15, 16) pour donner un module d'alimentation (31) rigide à la torsion.
EP12733714.5A 2011-08-22 2012-07-10 Soupape de distribution d'un milieu en écoulement Not-in-force EP2748456B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011081343A DE102011081343A1 (de) 2011-08-22 2011-08-22 Ventil zum Zumessen eines strömenden Mediums
PCT/EP2012/063471 WO2013026614A1 (fr) 2011-08-22 2012-07-10 Soupape de distribution d'un milieu en écoulement

Publications (2)

Publication Number Publication Date
EP2748456A1 true EP2748456A1 (fr) 2014-07-02
EP2748456B1 EP2748456B1 (fr) 2015-04-22

Family

ID=46506395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12733714.5A Not-in-force EP2748456B1 (fr) 2011-08-22 2012-07-10 Soupape de distribution d'un milieu en écoulement

Country Status (7)

Country Link
US (1) US9567957B2 (fr)
EP (1) EP2748456B1 (fr)
JP (1) JP5897129B2 (fr)
KR (1) KR20140049567A (fr)
CN (1) CN103732905B (fr)
DE (1) DE102011081343A1 (fr)
WO (1) WO2013026614A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013221515A1 (de) 2013-10-23 2015-04-23 Continental Automotive Gmbh Injektor und Kontaktelement für diesen
DE102014101308B4 (de) * 2014-02-03 2022-01-27 Stoba Holding Gmbh & Co. Kg Kraftstoffeinspritzdosiereinrichtung, Kraftstoffeinspritzdüse, Werkzeug zum Herstellen einer Kraftstoffeinspritzdosiereinrichtung und Verfahren zum Herstellen einer Kraftstoffdosiereinrichtung
FR3023875A1 (fr) * 2014-07-15 2016-01-22 Delphi Int Operations Luxembourg Sarl Injecteur de carburant
FR3024183B1 (fr) * 2014-07-22 2019-07-26 Delphi Technologies Ip Limited Injecteur de carburant
US20190168243A1 (en) * 2017-12-06 2019-06-06 Continental Automotive Systems, Inc. Outward opening injector for exhaust aftertreatment systems
CN110086357A (zh) * 2018-01-25 2019-08-02 索恩格汽车部件（中国）有限公司 用于汽车交流发电机的整流器、交流发电机和汽车
US10991390B2 (en) 2019-02-08 2021-04-27 Western Digital Technologies, Inc. Head assembly with suspension system for a tape embedded drive

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EP1445470A1 (fr) * 2003-01-24 2004-08-11 Siemens VDO Automotive S.p.A. Dispositif de dosage avec conecteur électrique
DE10317148B4 (de) 2003-04-14 2020-10-01 Robert Bosch Gmbh Brennstoffeinspritzventil
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DE102009002909A1 (de) * 2009-05-07 2010-11-18 Robert Bosch Gmbh Einspritzventil für ein Fluid
KR20120070565A (ko) * 2009-08-11 2012-06-29 몬두란 피티와이 엘티디 솔레노이드
EP2470773B1 (fr) * 2009-08-27 2015-04-29 McAlister Technologies, LLC Injecteur de carburant avec senseur pour la detection de combustion

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Also Published As

Publication number Publication date
JP5897129B2 (ja) 2016-03-30
JP2014529032A (ja) 2014-10-30
KR20140049567A (ko) 2014-04-25
CN103732905A (zh) 2014-04-16
US9567957B2 (en) 2017-02-14
DE102011081343A1 (de) 2013-02-28
EP2748456B1 (fr) 2015-04-22
CN103732905B (zh) 2016-11-09
WO2013026614A1 (fr) 2013-02-28
US20140312252A1 (en) 2014-10-23

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