EP3036429A1 - Mécanisme de commande d'injecteur et injecteur - Google Patents

Mécanisme de commande d'injecteur et injecteur

Info

Publication number
EP3036429A1
EP3036429A1 EP14766915.4A EP14766915A EP3036429A1 EP 3036429 A1 EP3036429 A1 EP 3036429A1 EP 14766915 A EP14766915 A EP 14766915A EP 3036429 A1 EP3036429 A1 EP 3036429A1
Authority
EP
European Patent Office
Prior art keywords
actuator
housing
sealing element
unit
housing unit
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.)
Withdrawn
Application number
EP14766915.4A
Other languages
German (de)
English (en)
Inventor
Emanuel Sanftleben
Martin Simmet
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.)
Continental Automotive GmbH
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 EP3036429A1 publication Critical patent/EP3036429A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the invention relates to an actuator for actuating an injection valve. Furthermore, the invention relates to an injection valve, which comprises the actuator.
  • Valves for example injection valves of a Brennkraftma ⁇ machine of a motor vehicle, have an electrically controllable actuator, which opens or closes the valve depending on a control of the actuator.
  • the actuator unit is to be supplied with electrical energy for actuating the actuator unit from outside the valve.
  • a valve body In order to realize the electrical supply to, for example, a piezoelectric actuator, a valve body is often encapsulated with a plastic to form a plug.
  • gaps between the component and the encapsulation which promote fluid introduction, result under temperature load and / or moisture inputs.
  • the probability of failure of the input increases uplifting ⁇ Lich injection valve by a short circuit and / or ground.
  • the object of the invention is based, it is an actuator for actuating an injection valve and a
  • the invention is characterized by an actuator for actuating an injection valve.
  • the actuator comprises a sleeve-shaped actuator housing with an actuator unit received therein, projects from the at least one Aktorzu réelle from an end opening of the actuator housing.
  • the actuator has a connection ⁇ device with at least one terminal contact, which is electrically coupled to the at least one Aktorzu effet and is electrically coupled with a system-side terminal.
  • the actuator has a housing unit, which is arranged at least along a circumference of the actuator housing in a front-side lateral surface portion of the actuator housing and which is designed to fix the connecting device in a predetermined position. Furthermore, the actuator comprises a cover which closes a cavity formed in the housing unit, wherein the cover is mechanically coupled to the housing unit.
  • the actuator comprises a first sealing element which is arranged or formed between the housing unit and the lid such that it prevents penetration of solid, liquid or gaseous media into the cavity.
  • this allows a simple and cost- effective provision of the actuator with a sufficiently dense, in particular sufficiently liquid-tight, plug for making electrical contact with the injection valve.
  • the total koruseaji has a high mechanical stability and Ro ⁇ bustheit.
  • the media-tight connection prevents un ⁇ desired penetration of liquids in the actuator, which potential field failure of the injector can be avoided by short and / or ground faults.
  • On -prone and complex connector solutions that are prepared by Zweikom ⁇ components (2K) -Spritzgie built can be dispensed with.
  • the arrangement of the first sealing element has the advantage that unwanted media, especially unwanted liquids not penetrate into the actuator housing and thus can reach the Akto ⁇ purity.
  • the first sealing element makes it possible in particular to seal a path between the housing part and the lid.
  • the respective lid can be manufactured independently of other components of the actuator.
  • the cover can be used by a simple and good identification and / or distinguishing features, for example by un ⁇ different colorations, for a distinction of different types of actuators.
  • the arrangement of the lid with the housing unit offers the possibility to easily arrange a semiper ⁇ meable sealing membrane in the lid or in the cavity, which seals against liquids, but a gas exchange between a recess in which the actuator unit is arranged, and their Environment guaranteed.
  • the housing unit and the actuator housing can be mechanically flexibly coupled, in particular connected.
  • the cavity is hollow cylinder-shaped, and the first
  • the actuator comprises a second sealing element, which is arranged between an outer side of the actuator housing and an inner side of the housing unit, which is directed in the direction of the actuator housing.
  • the second sealing element seals in particular a path between the actuator housing, which usually consists of steel or steel, and the housing unit is liquid-tight or gas-tight.
  • the first sealing element and / or the second sealing element is a sealing ring.
  • the respective sealing element may be formed as an O-ring. This allows a cost-effective production.
  • the cover comprises a fixing element for the first sealing element, wherein the fixing element is arranged and configured to hold the first sealing element in a position which is predetermined spaced from a directed into the cavity side of the lid.
  • the fixing element is arranged and configured to hold the first sealing element in a position which is predetermined spaced from a directed into the cavity side of the lid.
  • the actuator housing has a projection along its circumference, and the second sealing element is arranged on a side of the projection directed toward the frontally soapy opening of the actuator housing.
  • the cover comprises at least one snap-in hook, which is designed and arranged to mechanically couple the cover with the housing unit.
  • this allows to ⁇ reliable and stable mechanical coupling.
  • the first aspect of the actuator comprises at least a third sealing element and a connector housing.
  • the at least one connection contact of the connection device is partially arranged, wherein the connector housing has a transition region in which the at least one connection contact for coupling to the system-side connection emerges from the connector housing.
  • the at least one third sealing element is arranged at least in the transition region.
  • the third sealing element connects the at least one on ⁇ terminal contact form-fitting and / or media-tight with the connector housing.
  • this prevents ingress of media, in particular liquids, from the sides of the connector housing into the actuator.
  • the actuator has at least one spiral clamping pin, which mechanically couples the housing unit and the actuator housing.
  • the housing unit can be mechanically flexibly coupled to the actuator housing.
  • the housing unit and the actuator housing can be mechanically coupled by a kun ⁇ denspezifischen arrangement of a high-pressure and / or low pressure port dependent.
  • a position of the housing unit along a circumference of the actuator housing can be selected depending on a customer-specific arrangement of a high-pressure and / or low-pressure connection.
  • this allows a high flexibility with regard to an arrangement in different customer-specific installation spaces.
  • the housing unit and the connector housing are integrally formed.
  • this allows a cost- effective production of the actuator.
  • the invention is distinguished according to a second aspect by an injection valve for an internal combustion engine of a motor driving ⁇ zeugs for injecting fuel from having an actuator according to the first aspect.
  • Advantageous embodiments of the first aspect also apply to the second aspect. Embodiments of the invention are explained below with reference to the schematic drawings.
  • FIG. 1 shows an injection valve
  • FIG. 2 shows a first sectional view of an actuator
  • Figure 3 is a second sectional view of the actuator
  • Figure 4 shows a connector of the actuator.
  • FIG. 1 shows an exemplary injection valve 10.
  • the injection valve 10 is designed, for example, for arrangement in an internal combustion engine of a motor vehicle for injecting fuel.
  • the injection valve 10 includes a Actuator 20 with an actuator housing 30.
  • the actuator housing 30 may also be referred to as actuator body.
  • the injection valve 10 may comprise further bodies.
  • the injection valve 10 further comprises a fuel supply port 32, via which the injection valve 10 fuel can be supplied.
  • the injection valve 10 includes, for example, a leakage connection 34, via which excess fuel can be removed from the injection valve 10.
  • the actuator 20 includes, for example, a housing unit 40 and a connector, such as a VDA connector.
  • a VDA connector is a connector specified by the German Association of the Automotive Industry (VDA).
  • FIG. 2 shows a cross section through part of the actuating drive 20.
  • the actuator housing 30 of the actuator 20 is sleeve-shaped.
  • a recess is formed in the actuator housing 30, so that the actuator housing 30 has an end opening.
  • an actuator is arranged. From the frontal opening of the actuator housing 30 protrudes at least one Aktorzu effet 36 out.
  • the actuator unit 10 includes, for example, a piezoelectric actuator, but may also include any other actuator, for example, a magnetic actuator.
  • the actuator unit 10 can be supplied with electrical energy.
  • the actuator unit has two actuator leads 36.
  • the actuator 20 further comprises a connecting device 42 having at least one terminal contact 44 which is electrically coupled to the at least one Aktorzu réelle 36 and with a System-side connection is electrically coupled to control the actuator unit in the desired manner for injecting fuel.
  • the system-side terminal can for example comprise a pre ⁇ given connector of a control device and / or a connecting cable assembly, for example the connector of a wire harness in a motor vehicle.
  • the actuator 20 has a housing unit 40, which is arranged at least along a circumference of the actuator housing 30 in a front-side lateral surface portion of the actuator housing 30 and which is formed for fixing the connecting device 42 in a predetermined position.
  • the housing unit 40 comprises, for example, a plastic and is manufactured at ⁇ example by means of injection molding.
  • the actuator 20 comprises a cap 50 which closes a formed in the housing assembly 40 cavity 52, the cover 50 is mechanically coupled ge ⁇ with the housing unit 40th
  • the lid 50 comprises, for example, a fixing element 55 for a first sealing element 54, wherein the fixing element 55 is arranged and designed to hold the first sealing element 54 in a position that is predeterminedly spaced from a side of the lid 50 directed into the cavity 52.
  • the lid 50 comprises, for example, at least one snap-in hook 57, which is designed and arranged to mechanically couple the lid 50 to the housing unit 40.
  • the lid 50 is formed, for example, substantially disc-shaped.
  • the lid 50 is preferably made in one piece from plastic.
  • the first sealing element 54 is arranged or formed between the housing unit 40 and the cover 50 such that it prevents penetration of solid, liquid or gaseous media into the cavity 52.
  • the cavity 52 in the housing unit 40 is, for example, in the form of a hollow cylinder or substantially hollow cylinder, and the first sealing element 54 is arranged along an inner wall which surrounds the hollow cylindrical cavity 52.
  • the first sealing element 54 is, for example, a sealing ring.
  • the first sealing element 54 may be formed as an O-ring.
  • the first sealing element 54 comprises, for example, fluorocarbon rubber (FKM) or consists of fluorocarbon rubber.
  • the actuator 20 preferably has a second sealing element 56 which is arranged between an outer side of the actuator housing 30 and an inner side of the housing unit 40, which faces the actuator housing 30.
  • the actuator housing 30 has, for example, along its circumference a projection 58, and the second sealing element 56 is disposed on one of the frontal opening of the actuator housing 30 facing side of the supernatant 58.
  • the supernatant 58 is formed, for example, as a federal government.
  • the second sealing element 56 is also a sealing ring, for example.
  • the second sealing element 56 may be formed as an O-ring.
  • the second sealing element 56 has For example, fluorocarbon rubber (FKM) or consists of fluorocarbon rubber.
  • the actuator 20 includes, for example, at least a third sealing element 64 and a connector housing 70.
  • Connector housing 70 the at least one terminal contact 44 of the connecting device is partially disposed, wherein the connector housing 70 has a transition region 62, in which the at least one terminal contact 44 for coupling with the system-side terminal emerges from the connector housing 70.
  • the at least one third sealing element 64 is arranged at least in the transition region 62. The third sealing element 64 connects the at least one terminal contact 44 form-fitting and / or media-tight with the
  • Media density means at least liquid-tight.
  • media-tight can also mean liquid and gas tight.
  • the terminal contact 44 of the connecting device 42 in the predetermined transition region 62 of the connector housing 70 is first molded with a sealing material and / or encapsulated. Subsequently, the housing unit 40 together with the
  • Produced connector for example by means of injection ⁇ pour, wherein the at least one terminal contact 44 of the connecting device 42 is suitably encapsulated.
  • Sealant forms together with, for example, a
  • the third sealing element 64 has, for example, fluorosilicone (FVMQ) or consists of fluorosilicone.
  • the housing unit 40 is placed, for example, on the actuator housing 30 and mechanically coupled to the actuator housing 30 by means of a spiral tension pin 80 or a plurality of spiral tension pins 80. Alternatively or additionally, other joining techniques may be used for the mechanical coupling, such as bolting, welding and so on.
  • the connecting device 42 has, for example, at least one resistor.
  • the respective Ak ⁇ gate leads 36 of a piezoelectric actuator are coupled via a high-impedance electrical resistance to charge states of the piezoelectric actuator due to thermal changes and external
  • the at least one resistor is arranged, for example, in the Gezzau ⁇ setician 40th
  • the respective at least one connection contact 44 is connected, for example, via a resistance welding to the associated at least one actuator supply line 36 of the actuator unit.

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)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

L'invention concerne un mécanisme de commande (20), servant à actionner un injecteur (10), qui comprend un boîtier d'actionneur en forme de manchon (30) dans lequel est logé un ensemble actionneur, au moins une ligne d'alimentation de l'actionneur dépassant d'un orifice du boîtier (30) côté frontal. En outre le mécanisme de commande (20) comporte un dispositif de liaison (42) avec au moins un contact de raccordement qui est couplé électriquement à au moins une ligne d'alimentation de l'actionneur (36) et qui peut être couplé électriquement à un raccordement côté système. En outre, le mécanisme de commande (20) comporte un ensemble boîtier (40) qui est disposé au moins le long d'une circonférence du boîtier d'actionneur (30) dans un segment de surface d'enveloppe côté frontal du boîtier (30) et qui est configuré pour fixer le dispositif de liaison (42) dans une position prédéfinie. En outre, le mécanisme de commande (20) comprend un couvercle (50) qui ferme une cavité (52) ménagée dans l'ensemble boîtier (40), le couvercle (50) étant couplé mécaniquement à l'ensemble boîtier (40). Le mécanisme de commande (20) comprend un premier élément d'étanchéité (54), disposé ou formé entre l'ensemble boîtier (40) et le couvercle (50) de façon à empêcher la pénétration de milieux solides, liquides ou gazeux dans la cavité (52).
EP14766915.4A 2013-08-23 2014-08-21 Mécanisme de commande d'injecteur et injecteur Withdrawn EP3036429A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013216836.5A DE102013216836A1 (de) 2013-08-23 2013-08-23 Stellantrieb zur Betätigung eines Einspritzventils und Einspritzventil
PCT/EP2014/067800 WO2015024989A1 (fr) 2013-08-23 2014-08-21 Mécanisme de commande d'injecteur et injecteur

Publications (1)

Publication Number Publication Date
EP3036429A1 true EP3036429A1 (fr) 2016-06-29

Family

ID=51570464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14766915.4A Withdrawn EP3036429A1 (fr) 2013-08-23 2014-08-21 Mécanisme de commande d'injecteur et injecteur

Country Status (5)

Country Link
US (1) US10107242B2 (fr)
EP (1) EP3036429A1 (fr)
CN (1) CN105723082B (fr)
DE (1) DE102013216836A1 (fr)
WO (1) WO2015024989A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216836A1 (de) 2013-08-23 2015-02-26 Continental Automotive Gmbh Stellantrieb zur Betätigung eines Einspritzventils und Einspritzventil
EP4004415B1 (fr) * 2019-07-23 2023-06-14 Danfoss A/S Actionneur de soupape
US11692521B2 (en) * 2021-09-08 2023-07-04 Robert Bosch Gmbh Fitting connection assembly for a fluid delivery system

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Also Published As

Publication number Publication date
WO2015024989A1 (fr) 2015-02-26
US20160201628A1 (en) 2016-07-14
CN105723082B (zh) 2018-11-27
CN105723082A (zh) 2016-06-29
DE102013216836A1 (de) 2015-02-26
US10107242B2 (en) 2018-10-23

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