EP2511515A1 - Injecteur pour injection de fluides - Google Patents

Injecteur pour injection de fluides Download PDF

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Publication number
EP2511515A1
EP2511515A1 EP11162447A EP11162447A EP2511515A1 EP 2511515 A1 EP2511515 A1 EP 2511515A1 EP 11162447 A EP11162447 A EP 11162447A EP 11162447 A EP11162447 A EP 11162447A EP 2511515 A1 EP2511515 A1 EP 2511515A1
Authority
EP
European Patent Office
Prior art keywords
damping element
injector
valve
spring
mechanically coupled
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Withdrawn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
EP11162447A
Other languages
German (de)
English (en)
Inventor
Edoardo Giorgetti
Antonio Agresta
Luigi Gargiulo
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
Priority to EP11162447A priority Critical patent/EP2511515A1/fr
Publication of EP2511515A1 publication Critical patent/EP2511515A1/fr
Withdrawn legal-status Critical Current

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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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • 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
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical 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
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means

Definitions

  • the invention relates to an injector for injecting fluid and relates particularly to an injector for injecting fuel into an internal combustion engine.
  • the object of the invention is to provide an injector for injecting fluid that works reliably.
  • the invention is characterized by an injector for injecting fluid.
  • the injector comprises a longitudinal axis and a valve needle that is axially movable.
  • the valve needle is operable to prevent a fluid injection in a closing position and permits the fluid injection in further positions.
  • the fluid injector further comprises an armature that is mechanically coupled to the valve needle.
  • the injector further comprises a valve body that comprises a recess which takes in the valve needle.
  • the valve needle is axially movable with respect to the valve body.
  • the damping element provides a mass damping during closing of the fluid injector.
  • the damping element provides a hydraulic damping during closing of the fluid injector.
  • the damping element provides a damping of the valve needle during closing of the fluid injector. Due to the damping applied by the damping element to the valve needle, a reopening during the injector closing phase is reduced or eliminated. Therefore, the injector works reliably.
  • the valve needle 6 comprises a closing element at its downstream end arranged for closing the injector in its closed position inhibiting a fluid flow and for allowing the fluid flow otherwise.
  • the solenoid actuator 8 comprises at least one coil.
  • the coil is preferably overmolded.
  • the solenoid actuator may comprise more than one coil.
  • the actuator 8 is arranged to interact with the armature 3.
  • the armature 3 is mechanically coupled with the valve needle 6.
  • the armature 3 cooperates with the valve needle 6 such that at least part of the lift generated by the actuator 8 with respect to the armature 3 is transferred to the valve needle 6, moving the closing element in its open position in which fluid injection is permitted.
  • a needle closing force is provided by a calibration spring that applies a force to the valve needle 6 in the closing direction.
  • the armature is temporarily coupled to the valve needle, such that a movement of the armature 11 causes a movement of the valve needle 6 to move in the open position.
  • the valve needle 6 and the armature 3 can move relative to each other, particularly during the closing phase of the valve needle 6.
  • valve springs 9 and 10 are preloaded during assembly of the injector.
  • the two valve springs 9 and 10 are preloaded and thus, keep the armature in position.
  • Figure 2 shows a portion of the injector according to the embodiment of figure 1 in more detail.
  • the damping element 11 comprises a disk-shaped form.
  • the damping element 11 comprises an opening in a middle portion through which the valve needle 6 is guided.
  • the outer shape of the damping element 11 is preferably round.
  • the outer shape of the damping element 11 depends on the inner shape of the valve body 4 in the region where the two valve springs 9 and 10 are arranged.
  • the damping element 11 comprises a hollow cylindrical form along the axis L. Across the axis L in the sectional view of figure 2 , first there is a portion of the valve body 4, then a portion of the damping element 11, then a portion of the valve needle 6, then a further portion of the damping element 11 and then a further portion of the valve body 4.
  • the first valve spring 9 rests on a spring seat of the armature 14 with a first end 12.
  • the first valve spring rests on the damping element 11 with a second end 13, the second end 13 being opposite the first end 12.
  • the second valve spring 10 rests on a spring seat of the damping element 11 with a first end 14 and rests on a spring seat of the valve body 4 with a second end 15, the second end 15 being opposite the first end 14.
  • a force of the second spring 10 is applied to the damping element 11.
  • a force of the first spring 9 is applied to the damping element 11 and the armature 3.
  • the first spring 9 and the second spring 10 together provide a force from the valve body 4 to the armature 3.
  • the total preloads of the two valve springs 9 and 10 are designed to be together equal to a single ordinary spring used in ordinary injectors for injecting fuel. Therefore, the injector dynamics of the injector with two valve springs 9 and 10 remains equal to the injector dynamics of an ordinary injector with only one single valve spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP11162447A 2011-04-14 2011-04-14 Injecteur pour injection de fluides Withdrawn EP2511515A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11162447A EP2511515A1 (fr) 2011-04-14 2011-04-14 Injecteur pour injection de fluides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11162447A EP2511515A1 (fr) 2011-04-14 2011-04-14 Injecteur pour injection de fluides

Publications (1)

Publication Number Publication Date
EP2511515A1 true EP2511515A1 (fr) 2012-10-17

Family

ID=44117494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11162447A Withdrawn EP2511515A1 (fr) 2011-04-14 2011-04-14 Injecteur pour injection de fluides

Country Status (1)

Country Link
EP (1) EP2511515A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017063977A1 (fr) * 2015-10-15 2017-04-20 Continental Automotive Gmbh Soupape d'injection de carburant comprenant un dispositif antirebond, moteur à combustion interne et véhicule

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010478A1 (fr) * 1988-04-29 1989-11-02 Siemens Aktiengesellschaft Induit a amortisseur de sollicitation au cisaillement
DE19948238A1 (de) * 1999-10-07 2001-04-19 Bosch Gmbh Robert Brennstoffeinspritzventil
WO2006008208A1 (fr) * 2004-07-21 2006-01-26 Robert Bosch Gmbh Electrovanne destinee a un injecteur de systemes d'injection de carburant a rampe commune comportant un element amortisseur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010478A1 (fr) * 1988-04-29 1989-11-02 Siemens Aktiengesellschaft Induit a amortisseur de sollicitation au cisaillement
DE19948238A1 (de) * 1999-10-07 2001-04-19 Bosch Gmbh Robert Brennstoffeinspritzventil
WO2006008208A1 (fr) * 2004-07-21 2006-01-26 Robert Bosch Gmbh Electrovanne destinee a un injecteur de systemes d'injection de carburant a rampe commune comportant un element amortisseur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017063977A1 (fr) * 2015-10-15 2017-04-20 Continental Automotive Gmbh Soupape d'injection de carburant comprenant un dispositif antirebond, moteur à combustion interne et véhicule
CN108138715A (zh) * 2015-10-15 2018-06-08 大陆汽车有限公司 具有防弹跳装置的燃料喷射阀、燃烧发动机和车辆
KR20180066223A (ko) * 2015-10-15 2018-06-18 콘티넨탈 오토모티브 게엠베하 튀어오름 방지 디바이스를 구비한 연료 분사 밸브, 연소 기관 및 차량
US20180291851A1 (en) * 2015-10-15 2018-10-11 Continental Automotive Gmbh Fuel Injection Valve With An Anti Bounce Device
US10731614B2 (en) * 2015-10-15 2020-08-04 Continental Automotive Gmbh Fuel injection valve with an anti bounce device

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