EP1109998B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

Info

Publication number
EP1109998B1
EP1109998B1 EP00952881A EP00952881A EP1109998B1 EP 1109998 B1 EP1109998 B1 EP 1109998B1 EP 00952881 A EP00952881 A EP 00952881A EP 00952881 A EP00952881 A EP 00952881A EP 1109998 B1 EP1109998 B1 EP 1109998B1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel injection
closing
bore
valve member
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
EP00952881A
Other languages
German (de)
English (en)
Other versions
EP1109998A1 (fr
Inventor
Detlev Potz
Günter LEWENTZ
Uwe Gordon
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 EP1109998A1 publication Critical patent/EP1109998A1/fr
Application granted granted Critical
Publication of EP1109998B1 publication Critical patent/EP1109998B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from 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
    • 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
    • F02M61/042—The valves being provided with fuel passages
    • F02M61/045—The valves being provided with fuel discharge orifices
    • 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
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • 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

Definitions

  • the invention relates to a fuel injection valve for Internal combustion engines, with one in a bore of a Valve body against the force of a closing spring axially after externally displaceable valve member, the at his combustion chamber-side end protruding from the bore, a Valve closure member forming the closing head, the on its valve body side facing a valve sealing surface with which he with one on the combustion chamber side Front side of the valve body arranged valve seat surface cooperates, and with at least one of a pressure chamber outgoing injection opening on the closing head, whose Outlet opening in the closed position of the valve member from Valve body covered and directed outward Opening stroke is released.
  • A-nozzle that is, a nozzle opening outward toward the combustion chamber is off DE 196 18 698 A1 and DE 196 42 440 A1. at These fuel injectors will always be the opening stroke damped the valve member. In some embodiments in addition, the closing movement of the valve member attenuated.
  • the object of the invention is to provide a fuel injection valve to provide an increased life. In particular, should the forces occurring in the closing movement can be reduced.
  • the task is with a fuel injection valve for Internal combustion engine according to the preamble of claim 1 characterized solved that the hydraulic closing damping device a Damper piston and a blind bore in a valve holding body includes that the longitudinal axis of a blind bore with the Longitudinal axis of the valve member coincides that the Damper piston guided in the blind bore reciprocable is and that the combustion chamber remote end of the valve member at the Front side of the damper piston rests.
  • Another particular embodiment of the invention is characterized characterized in that the guidance of the piston in the Valve holding body is milled to a sealing To ensure guidance of the piston. This will ensured that the hydraulic pressure for damping builds up the movement in front of the closing piston.
  • Another particular embodiment of the invention is characterized characterized in that the piston through one in the blind bore arranged return spring is biased. This will achieved that the piston when opening and closing the Valve member movement follows.
  • Another particular embodiment of the invention is characterized characterized in that the blind bore with hydraulic fluid, especially oil, is filled.
  • the Fluid volume is compressed when the piston is at the closing movement of the valve member against the Return spring force is pushed into the blind hole. As a result, the closing movement of the valve member is clear braked.
  • Another particular embodiment of the invention is characterized in that the interior of the blind bore via a throttle with a relief chamber in connection stands. This will prevent the Closing speed of the valve member reduced to zero and the valve member may not be complete closes.
  • Fuel injection valve has a valve body 1, the one with its lower free end in the combustion chamber to supplying internal combustion engine protrudes. With his upper one Brennraumfernen face 3 is the valve body. 1 by means of a clamping nut 5 axially against a Valve holding body 7 biased.
  • the valve body 1 has an axial through hole 9, in the one piston-shaped valve member 11 guided axially displaceable is.
  • the valve member 11 has at its combustion chamber side lower end projecting from the bore 9, a Valve closure member forming the closing head 13. Of the Closing head 13 has on its the valve body. 1 side facing a valve sealing surface 15, with which he with a on the combustion chamber side end of the Valve body 1 arranged valve seat 17th interacts ..
  • annular pressure chamber 19 Between the valve member 11 and the wall of the bore 9 is an annular pressure chamber 19 is formed.
  • the pressure chamber 19 is the combustion chamber side of a ring shoulder 21st forming diameter extension of the valve member eleventh limited, which merges into the closing head 13.
  • Lead from the annular shoulder 21 (not shown) Injection openings from, initially as a longitudinal bore are formed, of which then in the amount of the closing head 13 remove cross holes.
  • the outlet openings of the Injection openings on the wall of the valve member 11 are arranged so that they are in the closed position of Valve member 11 of the bore wall 9 of the valve body. 1 are covered and only when outward Opening stroke of the valve member 11 by Ausforce from the Drilled hole 9.
  • the valve member 11 projects with its shaft 27 in a in Holding body 7 provided spring chamber 29.
  • the Fuel supply in the pressure chamber 19 of the injection valve takes place via an outgoing from a high pressure source Pressure line 20.
  • a free end 35 of the valve member shaft 27th educated On the side facing away from the combustion chamber of the annular shoulder 33rd is a free end 35 of the valve member shaft 27th educated.
  • the valve member end 35 is located in System against a damper piston 37.
  • the damper piston 37 is reciprocable in a blind bore 39 added.
  • the damper piston 37 limited in the Blind bore 39 a damping chamber 41.
  • the damping chamber 41st is via a throttle bore 43 with a return line 45 in connection.
  • the return line 45 in turn is available one (not shown). Relief room in connection.
  • a return spring 47th arranged in the damping chamber 41.
  • the return spring 47 is against the Damping piston 37 biased.
  • Embodiment of the invention is the throttle effect not by a throttle bore, but by an am Damping piston 37 formed throttle cross-section 49th reached. That is, the damping space 41 is above the Throttle cross-section 49 connected to the return line 45, which in turn with the (not shown) discharge space communicates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (7)

  1. Injecteur de carburant pour des moteurs à combustion interne, comportant :
    un organe de soupape (11), mobile axialement vers l'extérieur dans un perçage (9) d'un corps de soupape (1) contre la force d'un ressort de fermeture (31) et muni à son extrémité côté chambre de combustion d'une tête de fermeture (13) qui dépasse du perçage, forme un corps de fermeture de soupape et présente sur son côté orienté vers le corps de soupape (1) une surface d'étanchéité (15) grâce à laquelle la tête de fermeture interagit avec une surface de siège de soupape (17) située sur le côté frontal - côté chambre de combustion - du corps de soupape (1),
    au moins une ouverture d'injection partant d'une chambre de pression (19) et située sur la tête de fermeture dont l'ouverture de sortie est recouverte par le corps de soupape (1) lorsque l'organe de soupape (11) est en position de fermeture et est libérée lorsque la course d'ouverture est dirigée vers l'extérieur, et
    une installation hydraulique d'amortissement de fermeture,
    caractérisé en ce que
    l'installation d'amortissement de fermeture hydraulique (37, 39, 41, 43, 45, 47, 49) comprend un piston amortisseur (37) et un perçage borgne (39) dans un corps porte-soupape (7),
    l'axe longitudinal du perçage borgne (39) coïncide avec l'axe longitudinal de l'organe de soupape (11),
    le piston amortisseur (37) est guidé en va et vient dans le perçage borgne (39) et
    l'extrémité (35) - éloignée de la chambre de combustion - de l'organe de soupape (11) est appliquée au côté frontal du piston amortisseur (37).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le guidage du piston (37) dans le corps porte-soupape (7) est poli par appariement.
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    le piston amortisseur (37) est précontraint par un ressort de rappel (47) placé dans le perçage borgne (39).
  4. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    le perçage borgne (39) est rempli d'un fluide hydraulique, en particulier d'huile.
  5. Injecteur de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    l'espace intérieur du perçage borgne (39) est en liaison avec une chambre de décharge par l'intermédiaire d'un étrangleur (43, 49).
  6. Injecteur de carburant selon la revendication 5,
    caractérisé en ce que
    l'étrangleur est formé par un perçage d'étranglement (39) dans le corps porte-soupape (7).
  7. Injecteur de carburant selon la revendication 5,
    caractérisé en ce que
    l'étrangleur est formé par des faces polies planes (49) situées sur le piston (37).
EP00952881A 1999-07-02 2000-07-01 Soupape d'injection de carburant Expired - Lifetime EP1109998B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19930641 1999-07-02
DE19930641A DE19930641A1 (de) 1999-07-02 1999-07-02 Kraftstoffeinspritzventil
PCT/DE2000/002148 WO2001002717A1 (fr) 1999-07-02 2000-07-01 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1109998A1 EP1109998A1 (fr) 2001-06-27
EP1109998B1 true EP1109998B1 (fr) 2005-08-10

Family

ID=7913486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00952881A Expired - Lifetime EP1109998B1 (fr) 1999-07-02 2000-07-01 Soupape d'injection de carburant

Country Status (6)

Country Link
EP (1) EP1109998B1 (fr)
JP (1) JP2003530503A (fr)
CN (1) CN1316036A (fr)
BR (1) BR0006887A (fr)
DE (2) DE19930641A1 (fr)
WO (1) WO2001002717A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10240879A1 (de) * 2002-09-04 2004-03-18 Robert Bosch Gmbh Injektorgeführter Ventilkolben
DE10323562A1 (de) * 2003-05-26 2004-12-30 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE102004054589B4 (de) * 2004-11-11 2008-09-11 Continental Automotive Gmbh Steuerventil und Einspritzventil
JP2006161563A (ja) 2004-12-02 2006-06-22 Honda Motor Co Ltd 内燃機関のピストン
DE102008032133B4 (de) * 2008-07-08 2015-08-20 Continental Automotive Gmbh Kraftstoffeinspritzvorrichtung
CN101592108B (zh) * 2009-04-24 2012-05-23 靳北彪 发动机用阀头外位移燃油喷射器
DE102014200757A1 (de) * 2014-01-17 2015-07-23 Robert Bosch Gmbh Gasinjektor zum Direkteinblasen von gasförmigem Kraftstoff in einen Brennraum
CN106391593B (zh) * 2016-12-10 2019-04-12 无锡银联齿轮传动机械有限公司 柄管镀前清洗机的清洗座
CN109253005B (zh) * 2017-07-12 2022-08-05 罗伯特·博世有限公司 用于高压油泵的进油阀和相应的高压油泵

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618698A1 (de) * 1996-05-09 1997-11-13 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19642440A1 (de) * 1996-10-15 1998-04-16 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
GB2339451A (en) * 1998-07-10 2000-01-26 Lucas Ind Plc A fuel injector with control chamber and a damped needle valve

Also Published As

Publication number Publication date
EP1109998A1 (fr) 2001-06-27
CN1316036A (zh) 2001-10-03
WO2001002717A1 (fr) 2001-01-11
BR0006887A (pt) 2001-06-12
DE19930641A1 (de) 2001-01-11
JP2003530503A (ja) 2003-10-14
DE50010916D1 (de) 2005-09-15

Similar Documents

Publication Publication Date Title
DE19820513A1 (de) Kraftstoffeinspritzdüse für eine Brennkraftmaschine
DE19822671A1 (de) Druckbegrenzungsventil
DE10121892A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
EP1109998B1 (fr) Soupape d'injection de carburant
DE19618698A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19826791A1 (de) Ventilsteuereinheit für ein Kraftstoffeinspritzventil
DE102006054063A1 (de) Kraftstoffinjektor
DE10114219A1 (de) Kraftstoffinjektor mit vorgeordnetem Speichervolumen
DE10062959A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
EP1621759B1 (fr) Injecteur pour rampe commune
EP0135872B1 (fr) Injecteur de combustible pour moteurs à combustion interne
EP1624181B1 (fr) Injecteur pour une rampe commune
DE827140C (de) Brennstoffeinspritzventil
EP1471249B1 (fr) Dispositif pour amortir la fermeture de la tige de soupape d'une soupape d'injection
EP0220207A1 (fr) Injecteur de carburant pour moteurs a combustion interne.
EP0153494A1 (fr) Injecteur de carburant pour moteurs à combustion interne
WO2003004861A1 (fr) Injecteur de carburant a soupape de commande a equilibrage des forces
DE19930832A1 (de) Kraftstoffeinspritzventil
EP0137122A2 (fr) Injecteur de combustible pour moteurs à combustion interne
DE3725618C2 (de) Kraftstoff-Einspritzdüse für Brennkraftmaschinen
EP0826878B1 (fr) Injecteur de combustible pour moteurs à combustion interne
DE3410476A1 (de) Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE102019220072A1 (de) Einspritzdüse zur Einspritzung von Kraftstoff unter hohem Druck
DE102013211658A1 (de) Kraftstoff-Einspritzinjektor
DE10003252A1 (de) Einspritzdüse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20010711

17Q First examination report despatched

Effective date: 20040206

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050810

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50010916

Country of ref document: DE

Date of ref document: 20050915

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20050810

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060811

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050810