EP1105639B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

Info

Publication number
EP1105639B1
EP1105639B1 EP99962123A EP99962123A EP1105639B1 EP 1105639 B1 EP1105639 B1 EP 1105639B1 EP 99962123 A EP99962123 A EP 99962123A EP 99962123 A EP99962123 A EP 99962123A EP 1105639 B1 EP1105639 B1 EP 1105639B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
spring
valve needle
valve
armature
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.)
Expired - Lifetime
Application number
EP99962123A
Other languages
German (de)
English (en)
Other versions
EP1105639A1 (fr
Inventor
Ferdinand Reiter
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 EP1105639A1 publication Critical patent/EP1105639A1/fr
Application granted granted Critical
Publication of EP1105639B1 publication Critical patent/EP1105639B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M51/0685—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
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means

Definitions

  • the invention is based on a fuel injection valve according to the preamble of the main claim.
  • the fuel injection valve has one with a Valve needle connected valve closing body, with a valve seat surface formed on a valve seat body cooperates a sealing seat.
  • a Magnetic coil provided with a magnet armature interacts with the valve needle between a Movement of the armature in the stroke direction of the valve needle limiting first stop and one the movement of the Anchor against the stroke direction limiting second Stop is movable. That through the two stops fixed axial movement of the anchor leads in certain limits to a decoupling of the inertial mass of Valve needle and the valve closing body on the one hand and the inertial mass of the anchor on the other hand.
  • the fuel injection valve according to the invention with the Characteristic features of the main claim has the Advantage that any bumpers of the valve needle still can be avoided more effectively. It results in a high long-term stability, since the spring element against a Elastomer material has a long life and especially from the fuel is not destructible. A targeted adjustment of the damping properties is insofar possible that certain materials, shapes and Biases are used for the spring element.
  • the spring element first serves as a lower second stop for the anchor, secondly as a damping element that the Movement of the armature continuously slows down and on this Make a bouncing of the valve needle on the valve seat surface avoids or severely restricts, and third as Sliding spring, which attaches the anchor to its rest position presses on the first stop.
  • the one component of the spring element is a very high Function integration achieved.
  • the spring element according to the invention is in an advantageous manner easy and inexpensive to produce, in Fuel injector mounted on the valve needle and adjustable.
  • the spring element with a shaft and form a plurality of spring arms emanating from the shaft. It makes sense to use a spring steel sheet, which by deep drawing and punching in a desired Mushroom shape is brought.
  • FIG. 1 shows a Embodiment of an inventive Fuel injector in a cut Representation
  • Figure 2 shows a detail of Figure 1 around the anchor in an enlarged view
  • Figure 3 a Section along the line III-III in Figure 2
  • Figure 4 a alternative embodiment of serving as a damping spring Spring element in an analogous representation to Figure 3
  • Figure 5 is a plan view of a spring element.
  • FIG. 1 shows a section of an excerpt Representation of an inventive fuel injection valve 1.
  • the fuel injection valve 1 is for injecting Fuel in a mixture-compressing, spark-ignited Internal combustion engine.
  • the illustrated embodiment is as a high-pressure injector for direct injection of fuel, especially of gasoline, into the combustion chamber an internal combustion engine used.
  • the fuel injection valve 1 has an im Embodiment in one piece with a valve needle. 2 connected valve closing body 3, which with a on to a valve seat body 4 formed valve seat surface cooperates a sealing seat.
  • the valve seat body 4 is in a tubular valve seat carrier 5 is fixed, which in a Receiving bore of a cylinder head of the internal combustion engine is insertable and sealed by a seal 6.
  • the valve seat carrier 5 is at its inlet end. 7 used in a longitudinal bore 8 of a housing body 9 and against the housing body 9 by means of a sealing ring 10th sealed.
  • the end 7 of the valve seat carrier 5 is by means a threaded ring 11 biased, wherein between a Stage 12 of the housing body 9 and an upper end face 13 of the valve seat carrier 5 a Hubeinstellfit 14th is clamped.
  • a solenoid 15 For electromagnetic actuation of the Fuel injection valve 1 is a solenoid 15, the is wound on a bobbin 16.
  • electrical Excitation of the magnetic coil 15 is an armature 17 against a Stop surface 18 of the housing body 9 is pulled, the Housing body 9 upstream of the stop surface 18 as magnetic inner pole is formed, to which from the Stop surface 18 starting in the downstream direction a thin-walled magnetic throttle 19 connects.
  • at his lifting movement takes the armature 17 due to the plant its upstream face 35 at a first one Stop forming stop body 20 with the Stop body 20 firmly connected valve needle 2 and the Valve closing body 3 with.
  • the valve needle 2 is e.g. With the stopper body 20 is connected by a weld 22. The movement of the valve needle 2 takes place against a Return spring 23, between an adjusting sleeve 24 and the stopper body 20 is arranged.
  • the fuel flows through an axial bore 30 of the Housing body 9 and at least one provided in the armature 17 Axial bore 31 and over in a guide plate 32nd provided axial bores 33 in a longitudinal opening 34 of the Valve seat carrier 5 up to the sealing seat of Fuel injection valve 1.
  • the armature 17 is between the stopper body 20 and a according to the invention as a sliding spring and damping spring trained and serving as a second stop Spring element 25 arranged movably on the valve needle 2.
  • a sliding spring and damping spring trained and serving as a second stop Spring element 25 arranged movably on the valve needle 2.
  • the spring element 25 is advantageously with a tubular shaft 38 and with several outgoing therefrom Spring arms 39 formed.
  • the shaft 38 of the spring element 25 immediately surrounds the valve needle 2 and is applied this one.
  • the shaft 38 conceivable as the figures 3 and 4 clarify the sections along the line III-III in Figure 2 represent.
  • the Shaft 38 according to FIG. 4 with e.g. three axially extending Ribs 41 formed, which protrude from the valve needle 2 and are arranged at a respective distance of 120 °.
  • Valve needle 2 / spring element 25 with a press fit to Achieving a firm press connection, it is also possible for further securing in the region of the shaft 38 a or several weld points or seams 40 to put, as shown in Figure 2 is indicated on the right side.
  • the e.g. out stainless spring steel sheet molded spring element 25 is for example, by deep drawing and subsequent punching brought into its desired shape.
  • the real one Spring action is achieved by the spring arms 39, the off the shaft 38 emerge and from the valve needle. 2 abspreizen.
  • the spring arms 39 extend finger-like over the entire circumference of the shaft 38 away, wherein each individual spring arm 39 under a spring tension is arched.
  • the Spring arms 39 arched such that the armature 17 with his Edge region near the outer periphery at outer areas 42 to Attachment to the spring arms 39 comes, so that a tilting of the Ankers 17 can be excluded.
  • the radial end of the Spring arms 39 form behind the armature pad serving Outside 42 Federarmenden 44, the back of the anchor 17th are bent away, so that no sharp edges on the anchor 17th issue.
  • Figure 5 shows a plan view of a spring element 25 with six spring arms 39 distributed over the circumference. Another Number of spring arms 39 of the spring element 25 is however just as conceivable.
  • the spring arms 39 have e.g. corresponding of the bending moment curve radially outward one smaller width than the shaft 38 out.

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)

Claims (8)

  1. Injecteur de carburant (1) pour dispositifs d'injection de carburant dans des moteurs à combustion interne, comportant une bobine d'électro-aimant (15), comportant un induit (17) pouvant être sollicité par la bobine d'électro-aimant (15) dans une direction de levage et comportant une aiguille de soupape (2) en liaison avec un corps de fermeture de soupape (3), l'induit (17) étant mobile entre une première butée (20) reliée à l'aiguille de soupape (2) et limitant le mouvement de l'induit (17) dans la direction de levage et une deuxième butée (25) reliée à l'aiguille de soupape (2) et limitant le mouvement de l'induit (17) dans le sens contraire à la direction de levage, la deuxième butée étant formée par un élément de ressort (25),
    caractérisé en ce que
    l'élément de ressort (25) est un ressort de poussée ou un ressort d'amortissement, fixé sur l'aiguille de soupape (2).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'élément de ressort (25) est appuyé sur l'aiguille de soupape (2).
  3. Injecteur de carburant selon la revendication 2,
    caractérisé en ce que
    l'élément de ressort (25) est en outre fixé sur l'aiguille de soupape (2) par au moins un point de soudure (40) ou une ligne de soudure.
  4. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de ressort (25) présente une tige (38) enveloppant l'aiguille de soupape (2) et plusieurs bras élastiques (39) partant de la tige (38).
  5. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la tige (38) possède sur sa périphérie plusieurs nervures axiales (41), qui s'écartent du pointeau de soupape (2).
  6. Injecteur de carburant selon la revendication 4 ou 5,
    caractérisé en ce que
    les bras élastiques (39) sont configurés de façon courbée avec une tension élastique.
  7. Injecteur de carburant selon l'une des revendications 4 à 6,
    caractérisé en ce que
    l'induit (17) vient buter contre les bras élastiques (39) avec sa zone de bordure située à proximité de la périphérie extérieure, au niveau des zones extérieures (42) éloignées du pointeau de soupape (2).
  8. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de ressort (25) peut être fabriqué par emboutissage et découpage à partir d'une tôle d'acier élastique.
EP99962123A 1999-06-18 1999-12-02 Soupape d'injection de carburant Expired - Lifetime EP1105639B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19927900 1999-06-18
DE19927900A DE19927900A1 (de) 1999-06-18 1999-06-18 Brennstoffeinspritzventil
PCT/DE1999/003868 WO2000079120A1 (fr) 1999-06-18 1999-12-02 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1105639A1 EP1105639A1 (fr) 2001-06-13
EP1105639B1 true EP1105639B1 (fr) 2005-01-26

Family

ID=7911710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99962123A Expired - Lifetime EP1105639B1 (fr) 1999-06-18 1999-12-02 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6520434B1 (fr)
EP (1) EP1105639B1 (fr)
JP (1) JP2003502573A (fr)
KR (1) KR20010072511A (fr)
DE (2) DE19927900A1 (fr)
WO (1) WO2000079120A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103119282A (zh) * 2010-09-30 2013-05-22 大陆汽车有限公司 用于喷射阀的阀组件和喷射阀

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DE19947779A1 (de) * 1999-10-02 2001-04-12 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19950761A1 (de) * 1999-10-21 2001-04-26 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10039078A1 (de) * 2000-08-10 2002-02-21 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10063193A1 (de) * 2000-12-19 2002-06-27 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
DE10108974A1 (de) * 2001-02-24 2002-09-05 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10118161B9 (de) * 2001-04-11 2004-09-09 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10118162B9 (de) * 2001-04-11 2004-09-09 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10124747A1 (de) * 2001-05-21 2002-11-28 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10146141B4 (de) * 2001-09-19 2007-01-04 Robert Bosch Gmbh Magnetventil
DE10308482B4 (de) * 2002-02-26 2006-11-09 Kendrion Binder Magnete Gmbh Elektromagnetventil
DE10257896A1 (de) * 2002-12-11 2004-07-01 Robert Bosch Gmbh Brennstoffeinspritzventil und Verfahren zu dessen Herstellung
ITBO20030090A1 (it) * 2003-02-21 2004-08-22 Magneti Marelli Powertrain Spa Iniettore di carburante per un motore a combustione interna.
DE60328355D1 (de) * 2003-03-19 2009-08-27 Continental Automotive Gmbh Einspritzventil mit einer durch eine Feder vorgespannten Nadel
DE10345967B4 (de) * 2003-10-02 2014-02-27 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102004024533A1 (de) * 2004-05-18 2005-12-15 Robert Bosch Gmbh Brennstoffeinspritzventil
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DE102004037250B4 (de) * 2004-07-31 2014-01-09 Robert Bosch Gmbh Brennstoffeinspritzventil
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US8074625B2 (en) * 2008-01-07 2011-12-13 Mcalister Technologies, Llc Fuel injector actuator assemblies and associated methods of use and manufacture
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EP2123899B1 (fr) * 2008-05-23 2011-10-26 Delphi Technologies, Inc. Injecteur de carburant avec actionneur à solénoïde
DE102008002674B9 (de) * 2008-06-26 2010-10-21 INSTITUT FüR MIKROTECHNIK MAINZ GMBH Mikroventil und Abdichteinrichtung zur Verwendung in einem Mikrofluidiksystem sowie Verfahren zu deren Herstellung
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EP2365205B1 (fr) 2010-03-03 2013-05-15 Continental Automotive GmbH Soupape d'injection
US8528519B2 (en) 2010-10-27 2013-09-10 Mcalister Technologies, Llc Integrated fuel injector igniters suitable for large engine applications and associated methods of use and manufacture
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US9651011B2 (en) 2012-05-08 2017-05-16 Continental Automotive Gmbh Valve assembly for an injection valve and injection valve
EP2703633A1 (fr) 2012-08-28 2014-03-05 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
EP2706221B1 (fr) * 2012-09-07 2016-07-13 Continental Automotive GmbH Ensemble de soupape destiné à un injecteur de carburant et injecteur de carburant
DE102012217322A1 (de) * 2012-09-25 2014-06-12 Robert Bosch Gmbh Einspritzventil
US20140131466A1 (en) 2012-11-12 2014-05-15 Advanced Green Innovations, LLC Hydraulic displacement amplifiers for fuel injectors
US9309846B2 (en) 2012-11-12 2016-04-12 Mcalister Technologies, Llc Motion modifiers for fuel injection systems
DE102013206600B4 (de) 2013-04-12 2015-08-06 Continental Automotive Gmbh Einspritzsystem zum Einspritzen von Kraftstoff in eine Brennkraftmaschine und Regelverfahren für ein solches Einspritzsystem
DE102013207555B3 (de) 2013-04-25 2014-10-09 Continental Automotive Gmbh Verfahren zur Einspritzmengenadaption
EP2796703B1 (fr) * 2013-04-26 2016-07-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
DE102013220877A1 (de) * 2013-10-15 2015-04-16 Continental Automotive Gmbh Ventil
EP2896813B1 (fr) * 2014-01-17 2018-01-10 Continental Automotive GmbH Soupape d'injection de carburant pour moteurs à combustion interne
US9341154B2 (en) 2014-04-10 2016-05-17 Continental Automotive Gmbh Valve assembly for a fuel injector and fuel injector
EP3009663B1 (fr) * 2014-10-15 2020-06-24 Vitesco Technologies GmbH Ensemble de soupape et injecteur de fluide
DE102014220877B3 (de) * 2014-10-15 2015-12-03 Continental Automotive Gmbh Kraftstoffeinspritzventil
EP3076004B1 (fr) * 2015-04-02 2018-09-12 Continental Automotive GmbH Ensemble de soupape avec un élément de retenue de particules et soupape de fluide
DE102015209553B3 (de) * 2015-05-26 2016-07-21 Continental Automotive Gmbh Elektromagnetische Schaltventilvorrichtung
DE102015213221A1 (de) * 2015-07-15 2017-01-19 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
DE102015214171A1 (de) * 2015-07-27 2017-02-02 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
DE102015215537A1 (de) * 2015-08-14 2017-02-16 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
DE102015219646A1 (de) * 2015-10-09 2017-04-13 Continental Automotive Gmbh Fluid-Einspritzvorrichtung für Brennkraftmaschinen
DE102017207273A1 (de) * 2016-06-30 2018-01-04 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
DE102017220798A1 (de) * 2017-11-21 2019-05-23 Robert Bosch Gmbh Dosierventil und Strahlpumpeneinheit zum Steuern eines gasförmigen Mediums
FR3073903B1 (fr) * 2017-11-23 2021-07-30 Delphi Int Operations Luxembourg Sarl Injecteur de carburant
DE102018201951A1 (de) * 2018-02-08 2019-08-08 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
WO2022251503A1 (fr) 2021-05-28 2022-12-01 Stanadyne Llc Injecteur de carburant
US11603815B1 (en) 2021-11-04 2023-03-14 Standard Motor Products, Inc. Modular armature-needle assembly for fuel injectors

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103119282A (zh) * 2010-09-30 2013-05-22 大陆汽车有限公司 用于喷射阀的阀组件和喷射阀
CN103119282B (zh) * 2010-09-30 2015-04-22 大陆汽车有限公司 用于喷射阀的阀组件和喷射阀
US9376994B2 (en) 2010-09-30 2016-06-28 Continental Automotive Gmbh Valve assembly for an injection valve and injection valve

Also Published As

Publication number Publication date
KR20010072511A (ko) 2001-07-31
JP2003502573A (ja) 2003-01-21
DE59911528D1 (de) 2005-03-03
EP1105639A1 (fr) 2001-06-13
US6520434B1 (en) 2003-02-18
WO2000079120A1 (fr) 2000-12-28
DE19927900A1 (de) 2000-12-21

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